2012年10月第28卷增刊2

2012年10月第28卷增刊2

Accession number:20124615671627
Title:Magnetic field characteristics analysis and performance test of seeding element with non-axisymmetric magnetic
Authors:Lu, Chuantong (1); Hu, Jianping (1); Zhou, Chunjian (1); Hou, Chong (1)
Author affiliation:(1) Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Hu, J.(hujp@ujs.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:90-95
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Traditional magnetic precision seeding element is a single cylindrical magnet, and it generates axisymmetric magnetic field, therefore the magnetic force that the magnetic powder coated seeds suffered in the symmetrical position is equal, and it's magnetic force deviation is zero. Studies showed that this kind of seeding elements easily adsorbed multiple seed in the symmetrical position, resulting multiple index increased.In order to increase the magnetic force deviation between seeds and reduce the multiple indexes, this paper put forward a new magnetic seeding element which was added a bias magnet in the main magnets, producing non-axisymmetric magnetic field. The magnetic field characteristics of the two kinds of seeding element were analyzed in the seed-metering space by using the method of the magnetic field finite element. The analysis showed that the non-axisymmetric magnetic seeding element can increased the magnetic force deviation in the symmetrical position. The comparison tests of seed-metering performance also showed that the non-axisymmetric magnetic seeding element can significantly reduced the multiple index and reduced 4% compared with the axisymmetric magnetic seeding element.
Number of references:20
Main heading:Magnetic fields
Controlled terms:Feeding - Finite element method - Magnets
Uncontrolled terms:Axisymmetric - Bias magnet - Comparison test - Finite Element - Magnetic field characteristic - Magnetic force - Magnetic powders - Multiple index - Multiple indexes - Multiple seeds - Non-axisymmetric - Performance tests
Classification code:691.2 Materials Handling Methods - 701.2 Magnetism: Basic Concepts and Phenomena - 704 Electric Components and Equipment - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2012.z2.016
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671649
Title:Design of automatic seedling production line based on AT89S52
Authors:Liu, Mingdan (1); Lü, Xiaorong (1); Qi, Xiangjun (1)
Author affiliation:(1) The Information and Engineering Technology College, Sichuan Agricultural University, Ya'an 625014, China
Corresponding author:Liu, M.(qxj@sicau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:229-232
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Planting vegetables and flowers mostly need enormous seedling supply. It is inevitable to realize the seedling produce and supply automatically, so as to turn the traditional agriculture to the modern agriculture. According to traditional process for planting, an automatic seedling production line was designed, which taking the AT89S52 microcontroller as the core, taking the interface chip of 8255A as the I/O extended port to control all of the motors. The production line is combined the five traditional hand-made seedling procedures together: soil base filling, soil base pressing, seeding, covering and watering. The automatic line experiments were conducted in the lab, and the test results showed that it worked smoothly and stably. This research provided a reference for the design and manufacture of automatic seedling line in the future.
Number of references:15
Main heading:Design
Controlled terms:Agriculture - Experiments - Microcontrollers
Uncontrolled terms:AT89S52 - AT89s52 microcontroller - Interface chips - Production line - Seedling breed - Seedling production
Classification code:408 Structural Design - 722 Computer Systems and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.039
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671639
Title:Intelligent yield monitoring system of harvester based on plot breeding
Authors:Zhao, Liqing (1); Shang, Shuqi (1); Wang, Yanyao (1); Bai, Haoran (1); Yue, Dansong (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Wang, Y.(wyy57@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:172-178
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:At present, most domestic breeding companies in China still adopt the artificial check way to finish the measurement of production which leads to labour-intensive and low working efficiency and makes the quality of test data far from the data quality of yield monitor system adopted by developed countries. To solve this problem, a kind of harvester yield monitoring system was designed based on the plot breeding which mainly includes host computer part and slave computer part. The single chip of MSP430 from TI company was applied on slave computer, which can acquire the information such as the productivity of harvester, grain moisture content, environmental temperature, environmental humidity and the GPS with the measurement unit such as grain moisture sensor, gravity sensor, temperature sensor, humidity sensor, and the GPS module. The host computer took the embedded touch panel as the human-computer interface which can run MCGS software. The host computer and slave computer communicated for each other by the serial port of RS-232 and the protocol of ModBus. This system can automatically make accurate corresponding relations between block number and related production data, and had the ability of the data management such as the mass data import and export with usb flash disk. The scheme of the harvester yield monitoring system are proved correct and feasible by use of virtue experiment, this system obviously improves the breeding test production efficiency and the accuracy of data.
Number of references:21
Main heading:Harvesters
Controlled terms:Industry - Information management - Microcontrollers - Monitoring - Network protocols - Touch screens - Units of measurement
Uncontrolled terms:Breeding - Computer parts - Corresponding relations - Data quality - Developed countries - Environmental temperature - Flash disks - Grain moisture content - Gravity sensors - Host computers - Human computer interfaces - Labour-intensive - Mass data - Moisture sensors - Monitoring system - Production data - Serial port - Single chips - Test data - Test production - Touch panels - Working efficiency - Yield - Yield monitor systems
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 913 Production Planning and Control; Manufacturing - 912.2 Management - 912 Industrial Engineering and Management - 911 Cost and Value Engineering; Industrial Economics - 902.2 Codes and Standards - 821.1 Agricultural Machinery and Equipment - 723 Computer Software, Data Handling and Applications - 722.2 Computer Peripheral Equipment - 722 Computer Systems and Equipment
DOI:10.3969/j.issn.1002-6819.2012.z2.029
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671630
Title:Effects of location of airflow on pollen distribution for pneumatic pollination in hybrid rice breeding
Authors:Li, Zhongqiu (1); Tang, Chuzhou (1); Wang, Huimin (1); Li, Ming (1); Huang, Zhen (1); Fang, Shilun (1)
Author affiliation:(1) College of Engineering, Hunan Agricultural University, Changsha 410128, China; (2) Hunan Province Modern Agricultural Equipment Engineering Technology Research Center, Changsha 410128, China
Corresponding author:Tang, C.(chzhtang2002@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:107-113
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To understand the effects of airflow action position on pollen distribution for pneumatic pollination in hybrid rice breeding, the movements of two hybrid rice pollens by pneumatic pollination were investigated, the force of the plant on airflow action and the movement of pollen under the airflow layer were emphatically analyzed. Bending deformation of plants due to airflow action from various positions was analyzed. The effects of airflow acting position on the distribution of the pollen were evaluated from three aspects of the distribution density, horizontal distribution, and the vertical distribution of pollen. The results showed that the effects of airflow position on the amount of pollen, horizontal distribution, and vertical distribution were significantly different. When airflow center action in the midst position of tassel (under tassel top 100/200 mm), pollen diffusion quantity was more, the horizontal and vertical distribution quantity of pollen were significantly increased, which benefit the distribution of pollen along airflow direction. The location of airflow affects the amount of pollen and pollen distribution obviously, but less on the distance of pollen distribution along the direction of airflow.
Number of references:15
Main heading:Plants (botany)
Controlled terms:Agriculture - Bending (deformation) - Crops - Pneumatic equipment - Pneumatics
Uncontrolled terms:Action position - Bending deformations - Distribution density - Horizontal distribution - Hybrid rice - Pollen distribution - Pollination - Rice breeding - Vertical distributions
Classification code:421 Strength of Building Materials; Mechanical Properties - 461.9 Biology - 632.3 Pneumatics - 632.4 Pneumatic Equipment and Machinery - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.z2.019
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671644
Title:Analysis on dropping processing of precision sowing device in rice seeding bowl by high-speed photography
Authors:Tao, Guixiang (1); Yi, Shujuan (2); Wang, Chun (1); Mao, Xin (1)
Author affiliation:(1) Heilongjiang Bayi Agricultural University Engineering College, Daqing 163319, China; (2) Heilongjiang Bayi Agricultural University, Daqing 163319, China
Corresponding author:Yi, S.(yishujuan_2005@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:197-201
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to uncover the dropping processing of precision sowing device in rice seeding bowl, the process of dropping and motion manner of rice by the assembled of rice bowl dish precision sowing device was photographed on line by the high-speed photography. By observing and analyzing the reproduction of the photographed pictures, there exist different types of rice movement such as rotation, deflection etc. The trajectory is the quadratic curve, the vertical velocity increases with time but not increase by linear, by fitting the model in line with Yield Density, rice seed horizontal displacement are related to vertical displacement. Considering the rate and efficiency of dropping, 31 mm is determined as the maximum of the vertical displacement. The results provide the theoretic foundation for the dropping rate of precision sowing device in rice seeding bowl.
Number of references:18
Main heading:High speed photography
Controlled terms:Curve fitting - Seed
Uncontrolled terms:Dropping process - Horizontal displacements - Quadratic curves - Rice - Rice seed - Seed metering devices - Vertical displacements - Vertical velocity
Classification code:742.1 Photography - 821.4 Agricultural Products - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2012.z2.034
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671619
Title:Design and test of pineapple harvesting manipulator
Authors:Wang, Haifeng (1); Li, Bin (2); Liu, Guangyu (1); Xu, Liming (3)
Author affiliation:(1) Chinese Academy of Modern Agricultural Mechanization Sciences, Beijing 100083, China; (2) National Engineering Research Center of Intelligent Equipment for Agriculture, Beijing 100089, China; (3) College of Engineering of China Agricultural University, Beijing 100083, China
Corresponding author:Liu, G.(lgy@caams.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:42-46
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Pineapple harvest is a pretty heavy job and it is in great need to automate the harvesting process. This paper presented a kind of manipulator designed for pineapple harvest and the test was conducted to validate its feasibility. Based on the growth characteristics of the fruit, two steps were determined for the harvest operation, catching the fruit and holding it steadily in horizontal direction first, and then harvesting it by rotating in vertical direction. The manipulator was designed by using professional mechanical design software Pro/E, which consists of three parts, the grabbing mechanism, the hand driving mechanism and the rotating mechanism. A control system based on AT89C51 microcontroller was designed to control two stepping motors, which can finish the whole harvest process. The experimental results showed that, the designed manipulator can realize the harvest operation with the control system. The max rotation angle is 180° and the harvest duration is 21-24 s. The research can provide a reference for the development of pineapple harvesting robots.
Number of references:16
Main heading:Manipulators
Controlled terms:Control systems - Design - Experiments - Fruits - Harvesting - Machine design - Robots
Uncontrolled terms:Design and tests - Driving mechanism - Growth characteristic - Harvest operations - Harvesting robot - Mechanical design software - Rotation angles - Vertical direction
Classification code:408 Structural Design - 601 Mechanical Design - 731 Automatic Control Principles and Applications - 821.3 Agricultural Methods - 821.4 Agricultural Products - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.008
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671614
Title:Design and experiment of cleaning and covering mechanism for no-till seeder in wheat stubble fields
Authors:Wang, Hanyang (1); Chen, Haitao (1); Ji, Wenyi (1)
Author affiliation:(1) Engineering College, Northeast Agricultural University, Harbin 150030, China
Corresponding author:Chen, H.(haitao1963@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:7-12
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A new type of cleaning and covering mechanism, used for no-till seeder in wheat stubble fields, has been designed to solve the problem of straw blocking of seeders and shortage of anti-blocking mechanisms in wheat residue covered fields in annual double cropping area of China. Spring tine was selected as the key part for cleaning, and transverse moving of straw and driving anti-blocking were chosen in this mechanism. Its parameters optimization was studied with the method of L<inf>9</inf>(34) orthogonal test in order to find out a reasonable form. The optimal combination of influencing factors was obtained by the experiment: linear velocity of spring tines was 20.72 m/s, operation speed was 4.5 km/h, arrangement of spring tines was seven rows and angle of baffle was 75°, meanwhile, the cleaning ratio was more than 98%, the covering evenness and width were 7.48 and 2.89 m respectively. The field experiment of seeding performance of no-till seeder on which the mechanism fixed was conducted according to "Testing Methods of Single Seed Drills", and the result showed that the qualified rate of spacing, the miss rate, the multiples rate and the coefficient of variation of qualified spacing satisfied the requirement of superior class, the sowing depth rate attained the requirement of first class, under the condition that the theory spacing were 6 and 8 cm, and the theory sowing depth was 3~5 cm. Above all, the cleaning and covering mechanism has important value in solving the problem of no-till mechanization seeding in wheat stubble field.
Number of references:20
Main heading:Cleaning
Controlled terms:Agricultural machinery - Experiments - Optimization
Uncontrolled terms:Coefficient of variation - Double cropping - Field experiment - Important value - Key parts - Linear velocity - Miss-rate - No-till - Operation speed - Optimal combination - Orthogonal test - Parameter optimization - Parameters optimization - Seed drills - Testing method
Classification code:802.3 Chemical Operations - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.z2.002
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671652
Title:Identification of maize kernel embryo based on hyperspectral imaging technology and PCA
Authors:Huang, Wenqian (1); Li, Jiangbo (2); Zhang, Chi (2); Zhang, Baohua (2); Zhang, Baihai (1)
Author affiliation:(1) School of Automation, Beijing Institute of Technology, Beijing 100081, China; (2) Beijing Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China; (3) State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China
Corresponding author:Zhang, B.(smczhang@bit.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:243-247
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To segment the embryo from the maize kernel, a hyperspectral imaging system has been built for acquiring reflectance images from maize kernels in the spectral region between 500 and 950 nm. Hyperspectral images of maize samples were evaluated using principal components analysis (PCA) with the goal of selecting several effective wavelengths that could potentially be used in a multispectral imaging system. The second principal component images using three effective wavelengths 510, 555 and 575 nm in the visible spectral (VIS) had good identification results under investigation. For the investigated independent test samples, 97.0% of embryos on samples were correctly separated from the maize kernels.
Number of references:16
Main heading:Principal component analysis
Controlled terms:Image recognition - Imaging systems - Models - Spectroscopy
Uncontrolled terms:Effective wavelength - Embryo - Hyperspectral Imaging - Maize kernels - Principal components analysis
Classification code:716 Telecommunication; Radar, Radio and Television - 741 Light, Optics and Optical Devices - 746 Imaging Techniques - 801 Chemistry - 902.1 Engineering Graphics - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.z2.042
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671659
Title:Construction of digital fingerprinting and cluster analysis using ISSR markers for sugar beet cultivars (lines)
Authors:Liu, Qiaohong (1); Cheng, Dayou (1); Yang, Lin (1); Luo, Chengfei (1); Kong, Fanjiang (2); Wu, Yumei (3)
Author affiliation:(1) School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; (2) Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 130012, China; (3) Sugar Beet Research Institute of CAAS, Harbin 150080, China
Corresponding author:Cheng, D.(hgdcdy@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:280-284
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:ISSR fingerprinting and cluster analysis were conducted among 4 introduced sugar beet (B. vulgaris) cultivars from Holland and 6 lines (including 2 annual beets) from China using ISSR markers. Six stable and high polymorphic primes were selected in this study. 51 bands were obtained using ISSR-PCR with the six primers, and polymorphic rate of the bands was 86.3%. All test varieties (lines) can be distinguished by ISSR fingerprinting using the six primes. Digital fingerprint codes were constructed by 8 polymorphic bands from ISSR primer L1 and UBC846, which could discriminate 10 cultivars (lines) completely. The result indicated that ISSR fingerprinting could identify different sugar beet varieties efficiently. The genetic similarity matrix among all 10 samples was obtained by similarity analysis using Dice algorithm with NTSYS-pc software, and similarity coefficients ranged from 0.43 to 0.83 with an average of 0.62. Cluster tree was formed using UPGMA method. Cluster analysis showed that 10 varieties (lines) were divided two groups and three subgroups. UPGMA cluster analysis showed clear genetic relationships among the 10 sugar beet cultivars. The result indicated that the cluster tree was in accordance with the character of the populations and ISSR markers could be used to estimate genetic distance between populations.
Number of references:22
Main heading:Cluster analysis
Controlled terms:Agricultural products - Quality control - Sugar beets
Uncontrolled terms:Cluster tree - Digital fingerprint - Digital fingerprinting - Fingerprinting - Genetic distances - Genetic relationships - Genetic similarities - ISSR markers - Polymorphic bands - Similarity analysis - Similarity coefficients - Vulgaris
Classification code:723 Computer Software, Data Handling and Applications - 821.4 Agricultural Products - 913.3 Quality Assurance and Control - 922 Statistical Methods
DOI:10.3969/j.issn.1002-6819.2012.z2.049
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671662
Title:Storability and sensory qualities for rice with low amylose content
Authors:Qiu, Shuo (1); Kawamura, Shuso (1); Cheng, Xianli (2)
Author affiliation:(1) Graduate School of Agricultural Science, Hokkaido University, Hokkaido 110866, Japan; (2) Stated-Owned Assets Management Bureau, Shenyang Agriculture University, Liaoning 110866, China
Corresponding author:Qiu, S.(shuoq2009@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:304-308
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Changes of physiological properties and sensory qualities for stored rice are critical to acceptance of consumers. In this research, effects of storage temperatures on the storability and sensory qualities for Yumepirika (a low amylose content rice variety) were invesgated. Storability of rough rice was superior to that of brown rice in terms of changes in free fat acidity. In low temperature storage, there were 2.9 and 15.8 mg increase in the free fat acidity for rough rice and brown rice, which indicated that brown rice was necessary to be stored in even lower temperature. Sensory test showed that brown rice in the room temperature storage had the lowest overall flovar value and stickiness value. With storage in the super-low temperature and low temperature for two years, rice vitality and sensory qualities were maintained at similar values compared to the reference sample.
Number of references:18
Main heading:Temperature
Controlled terms:Agricultural engineering - Agriculture - Energy storage - Quality control
Uncontrolled terms:Amylose content - Brown rice - Cooked rice - Germination rates - Low temperatures - Low-temperature storage - Physiological properties - Room temperature - Rough rice - Sensory qualities - Storability - Storage temperatures
Classification code:641.1 Thermodynamics - 702 Electric Batteries and Fuel Cells - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 913.3 Quality Assurance and Control
DOI:10.3969/j.issn.1002-6819.2012.z2.053
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671647
Title:Detection of LAI for fruiter based on hemispherical photography
Authors:Zhang, Lijun (3); Hong, Tiansheng (1); Wu, Weibin (1); Chileshe, Joseph Mwape (1); Feng, Zhuofeng (3); Zhao, Ben (3); Xu, Ling (3)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, Guangzhou 510642, China; (2) Division of Citrus Machinery, China Agriculture Research System, Guangzhou 510642, China; (3) College of Engineering, South China Agricultural University, Guangzhou 510642, China
Corresponding author:Wu, W.(wuweibin@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:213-220
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To solve the error from data acquisition to data processing in the traditional method and improve the standards in the method of operation, a hemisphere photography detecting system for shooting single fruiters from different positions by using fisheye lens was designed. The images were processed to obtain the LAI measuring value which would be validated with the true value, in order to study the influencing factors of the measurement of LAI. The results showed that fisheye lens shooting in different directions, offsets, and heights and using different software processing methods influenced the measurement of LAI. The optimal parameters were as follows: filming direction from the fruit tree of the east, distance between the fisheye lens and the citrus tree trunk of 25 cm, height from the ground of 89 cm. LAI<inf>4R</inf> was used, the Zenith Angle was 60, the areas irrelevant to the canopy was covered by using software mask function. With the above conditions, the coefficient of determination R2 of the linear regression model was 0.8268. The average absolute error and the average relative error between the measured value and the true value was 0.31% and 14.19%, respectively. This study provides a reference for the detection of the LAI of single fruiters.
Number of references:30
Main heading:Photography
Controlled terms:Data acquisition - Forestry - Fruits - Image processing - Linear regression - Orchards
Uncontrolled terms:Average absolute error - Average relative error - Citrus tree - Coefficient of determination - Detecting systems - Fish-eye lens - Fruit trees - Hemispherical photography - LAI - Linear regression models - Mask function - Optimal parameter - Parameter combination - Software processing - Zenith angle
Classification code:723.2 Data Processing and Image Processing - 746 Imaging Techniques - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.z2.037
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671655
Title:Quantitative analysis of seed purity for maize using near infrared spectroscopy
Authors:Wang, Qing (1); Xue, Weiqing (1); Ma, Hanxu (1); Li, Junhui (2); Sun, Baoqi (3); Sun, Qun (1)
Author affiliation:(1) Department of Plant Genetics and Breeding, College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China; (2) College of Information and Electrical Engineering, China Agricultural University, Beijing 100193, China; (3) Beijing Forestry Academy Science, Beijing 100097, China
Corresponding author:Sun, Q.(sqcau@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:259-264
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:A quantitative identification model for testing the purity of Xianyu335 hybrid maize seed was built by near infrared reflectance spectroscopy (NIRS) with quantitative partial least squares (QPLS). By grinding and mixing maize hybrid seeds of different years and sources with their female parent seeds, 123 samples were obtained with a 0.5% gradient and purity within the range of 80%-100% (three replicates of every year and every source in each gradient) and the spectra of the samples were collected. The results showed as following: through implementation of scatter correction pretreatment, the wave number range of 4000-8000 cm-1 was appropriate for modeling (calibration sets: validation set = 3:1); the internal cross coefficient of determination (R2) for the calibration set reached 96.06%; the standard error of calibration (SEC) was 1.18%; and the Average absolute relative deviation (AARD) was 1.03%. Further, the R2 for the validation set was 95.02%; the SEC was 1.28%; and the AARD was 1.12%. Results of using different ratios of the modeling samples and testing samples showed that the R2 of the calibration set and validation set were all greater than 94%, indicating the feasibility and the stability of NIRS to quantitatively determine the purity of maize hybrid.
Number of references:18
Main heading:Near infrared spectroscopy
Controlled terms:Calibration - Least squares approximations - Models
Uncontrolled terms:Average absolute relative deviations - Coefficient of determination - Maize hybrids - Maize seeds - Near infrared reflectance spectroscopy - Partial least square (PLS) - Pre-Treatment - Purity - Quantitative identification - Scatter correction - Standard error of calibrations - Testing samples - Wave numbers
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.6 Numerical Methods - 902.1 Engineering Graphics - 801 Chemistry
DOI:10.3969/j.issn.1002-6819.2012.z2.045
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671664
Title:Introduction of agricultural engineering journals embodied by databases of EI and SCI, etc
Authors:Wang, Yan (1); Tian, Changyan (1)
Author affiliation:(1) Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Corresponding author:Wang, Y.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:316-322
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to provide reference for researchers in field of agricultural engineering when searching for literatures and contributing to journals, the paper introduces agricultural engineering journals embodied by standard databases of EI (Engineering Index), SCI(Science Citation Index) and CSCD(Chinese Science Citation Database) and CSTPD(Chinese Scientific and Technical Papers and Citation Database). The information of 22 agricultural engineering journals embodied by EI and 12 journals embodied by SCI were introduced, including the journal title, ISSN(International Standard Serial Number), country/place of publication and the latest impact factor. Besides, another 15 journals embodied by EI and SCI were particularly described, such as the cycles of the issues, the publisher, the contact address, the up-to-date URL. The paper also introduced the Chinese core journals and their ranking in database of CSCD. The paper provides reference for researchers agricultural engineering discipline.
Number of references:26
Main heading:Database systems
Controlled terms:Agricultural engineering - Agriculture - Engineering - Machinery
Uncontrolled terms:Chinese science citation database - Core journals - EI - Engineering index - Impact factor - In-field - International standards - Journal titles - SCI - Science citation index - Serial number
Classification code:601 Mechanical Design - 723.3 Database Systems - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901 Engineering Profession
DOI:10.3969/j.issn.1002-6819.2012.z2.055
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671653
Title:Variety identification of corn seed based on Bregman Split method
Authors:Jiang, Jingtao (1); Wang, Yanyao (1); Yang, Ranbing (1); Mei, Shuli (2)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China; (2) College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Mei, S.(meishuli@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:248-252
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Corn seed purity is closely related to corn yield, so seed selection plays an important role in improving grain yield product. The automatic seed selection procedure based on the machine vision is usually divided into three steps: image segmentation, feature extraction and classification. Variational model for image segmentation and corresponding numerical technique of Split Bregman method were introduced into the identification procedure, which had advantages of feature extraction such as high accuracy and closed continuous border. In addition, the adaptive wavelet collocation method was employed to solve the optimality conditions in Bregman split method. Based on the improved method, the corn geometric features can be extracted more precisely. Nongda108 and Ludan981 were taken as examples to test the new method. Based on a classifier designed with SVM, results showed the identification accuracy of Nongda108 and Ludan981 were 97.3% and 98%, respectively, better than 95% in previous research.
Number of references:19
Main heading:Numerical methods
Controlled terms:Computer vision - Feature extraction - Image recognition - Image segmentation - Models
Uncontrolled terms:Adaptive wavelet collocation method - Bregman split method - Corn seeds - Corn yields - Feature extraction and classification - Geometric feature - Grain yield - Identification accuracy - Identification procedure - Interpolation operator - Numerical techniques - Optimality conditions - Seed selection - Variational models - Variety identification
Classification code:716 Telecommunication; Radar, Radio and Television - 723.5 Computer Applications - 741.1 Light/Optics - 902.1 Engineering Graphics - 921.6 Numerical Methods
DOI:10.3969/j.issn.1002-6819.2012.z2.043
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671613
Title:Retrospect and prospect of seed processing industry in China
Authors:Zhu, Ming (1); Chen, Haijun (1); Li, Yonglei (1)
Author affiliation:(1) Chinese Academy of Agricultural Engineering, Beijing 100125, China
Corresponding author:Zhu, M.
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:1-6
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to analyze the current situation of the seed processing industry, an investigation of seed processing for the passed five years was performed in the paper with the retrospect of seed industry development. Meanwhile, the suggestion of future research was proposed by combining the demand of seed industry and limitation of techniques for seed processing.
Number of references:18
Main heading:Seed
Controlled terms:Agricultural products - Industry
Uncontrolled terms:Current situation - Industry development - Processing industry
Classification code:821.4 Agricultural Products - 911 Cost and Value Engineering; Industrial Economics - 912 Industrial Engineering and Management - 913 Production Planning and Control; Manufacturing
DOI:10.3969/j.issn.1002-6819.2012.z2.001
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671626
Title:Experimental research on inside-filling metering device for peanut seeder
Authors:Sun, Yutao (1); Tian, Lizhong (2); Shang, Shuqi (1); Yang, Ranbing (1); Wang, Yanyao (1); Zhao, Jianliang (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China; (2) Department of Automotive Engineering, Zibo Vocational Institute, Zibo 255314, China
Corresponding author:Shang, S.(sqshang@qau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:84-89
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to make inside-filling metering device widely be employed in peanut planting machine, The experiment and research on inside-filling metering device were had based on the operation platform of JPS-12. The effect of metering axle rotating speed, metering height and seed size on performance of metering device was analyzed with research method that combined single and multi-elements experiments. Qualified rate of seed hole distance, double seed rate, single seed rate, repeat rate, omitting rate and damage rate were selected as the performance indexes. Through variance analysis on results of above mentioned experiment, when discharge rotating speed was 30 r/min, discharge height was 25 cm, peanut breed was Fenghua 5, the discharge performance was the best, The discharge performance is that the qualified rate of seed hole distance was 96.12%, double seed rate was 96.36%, single seed rate was 0.91%, repeat rate was 1.82%, omitting rate was 0.91% and damage rate was 0.35%. The experimental research provides a foundation for design and improvement of high efficient peanut planting devices.
Number of references:20
Main heading:Experiments
Controlled terms:Agricultural machinery - Filling - Oilseeds - Optimization - Rotating machinery
Uncontrolled terms:Damage rate - Discharge performance - Experimental research - Hole distances - Metering devices - Multielements - Orthogonal test - Peanut - Performance indices - research methods - Rotating speed - Seed rate - Seed size - Variance analysis
Classification code:601.1 Mechanical Devices - 691.2 Materials Handling Methods - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 901.3 Engineering Research - 921.5 Optimization Techniques
DOI:10.3969/j.issn.1002-6819.2012.z2.015
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671658
Title:Seed vigor assessment for Cunninghamia lanceolata and Pinus massoniana using image processing
Authors:Deng, Fei (1); Qi, Hengnian (1); Zhao, Guangwu (2)
Author affiliation:(1) College of Information Engineering, Zhejiang Agriculture and Forestry University, Lin'an 311300, China; (2) College of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Lin'an 311300, China
Corresponding author:Zhao, G.(gwuzhao@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:274-279
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to determine seed vigor of forest tree rapidly and automatically, five-lot seeds of China fir and masson pine were used to study the assessment methods of seed vigor by using computer image processing. Firstly, images were captured by a common digital camera from germinated seeds which grew upright on blue germination paper. Then, seedling growth was measured daily for 5 days since 6th day after sowing (DAS) using self-developed seedling length calculating software. The results showed that the seedling length and growth rate generally ranked seed quality in a similar trend compared with field test, and the optimal computer recognition indices were species dependent. Seedling lengths at 6th, 9th DAS (SL<inf>6</inf>, SL<inf>9</inf>)<inf> </inf>were the optimal indices to assess seed vigor of China fir. Seedling length at 10th DAS (SL<inf>10</inf>) and growth speed (GS) were the optimal indices to assess seed vigor of masson pine. In general, it was feasible to assess seed vigor of China fir and masson pine by using computer image analysis of seedling length and growth rate. The research can provide a reference for seed vigor assessment of small-seed species.
Number of references:20
Main heading:Seed
Controlled terms:Forestry - Image processing - Measurements - Optimization - Stress intensity factors
Uncontrolled terms:Assessment methods - Computer image analysis - Computer image processing - Cunninghamia lanceolata - Field test - Growth speed - Masson pine - Pinus massoniana - Seed quality - Seedling growth - Vigor assessment
Classification code:943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.5 Optimization Techniques - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 821.4 Agricultural Products - 741 Light, Optics and Optical Devices - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 821.0 Woodlands and Forestry
DOI:10.3969/j.issn.1002-6819.2012.z2.048
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671617
Title:Development and prototype trial of digging-pulling style cassava harvester
Authors:Liao, Yulan (1); Sun, Youpan (2); Liu, Shihao (3); Chen, Danping (4); Wang, Gaoping (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, China; (2) Jian'an Branch, China Changan Automobile Group Co., Ltd., Ya'an 625000, China; (3) College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; (4) College of Mechanical and Electrical Engineering, Hainan Institute of Science and Technology, Haikou 571126, China
Corresponding author:Liao, Y.(liaoyuLan@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:29-35
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Aim at the complexity of cassava tuber distributing in the soil, in order to harvest cassava tuber from different soils with a variety of hard levels, referencing the basic principles and structure of potatoes, garlic, sweet potatoes and other root crops harvesting machinery, a kind of digging-pulling style cassava harvester was developed based on cassava's biological and physical characteristics, which can complete tuber's digging, transportation, separation and other work simultaneously. The digging shovel, clamping conveyor and power transmission mechanism were designed and the key parameters were determined. The key parameters of the grizzly bar-type shovel is shovel's plane angle of on more 20°, the shovel's length of is 550 mm and shovel's width is 1000 mm. The total transmission ratio is 2.29, gearbox's transmission ratio is 2. The gearbox output shaft speed is 500 r/min. The chain transmission ratio is 1.15, and output speed is 435 r/min. The digging-pulling cassava harvester should be used with medium-sized tractor. Through the trial of the prototype and field test, the results showed that digging-pulling cassava harvester runs smoothly, and reaches the combination of digging and pulling to harvest cassava.
Number of references:19
Main heading:Plants (botany)
Controlled terms:Experiments - Harvesters - Harvesting - Shovels - Structural design - Tubes (components)
Uncontrolled terms:Basic principles - Cassava - Cassava tubers - Digging shovels - Digging-pulling style - Field test - Key parameters - Physical characteristics - Plane angles - Root crops - Shaft speed - Sweet potato - Total transmission - Transmission mechanisms - Transmission ratios
Classification code:901.3 Engineering Research - 821.3 Agricultural Methods - 821.1 Agricultural Machinery and Equipment - 616.1 Heat Exchange Equipment and Components - 461.9 Biology - 408.1 Structural Design, General - 405.1 Construction Equipment
DOI:10.3969/j.issn.1002-6819.2012.z2.006
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671656
Title:Variety identification of delinted cottonseeds based on BP neural network
Authors:Li, Jingbin (1); Chen, Bingqi (1); Shao, Luhao (2); Tian, Xushun (2); Kan, Za (2)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China; (2) College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
Corresponding author:Chen, B.(fbcbq@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:265-269
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to improve the accuracy of variety identification of delinted cottonseeds, this paper proposed a nonlinear identification method based on Back Propagation (BP) neural network and investigated three varieties of delinted cottonseeds, namely Xinluzao 36, Zhongmian 50, and Huiyuan 710. Applying to image processing techniques, the color and shape characteristic parameters of delinted cottonseeds were selected, and then through carrying out univariate analysis of such characteristic parameters, 9 characteristic parameters that had significant difference were selected and involved in the network training, which improved the training speed. Through training and comparison, it was found that the training error was the smallest when the training target was 0.02 under condition that training times was 3000, and the node number of hidden layer was 12. After testing the test set, it was found that the comprehensive test accuracy rate was 90%, which indicated that the method was feasible to improve the accuracy of variety identification of delinted cottonseeds. The research can provide a reference for variety identification of other granular seeds.
Number of references:18
Main heading:Identification (control systems)
Controlled terms:Characterization - Image processing - Neural networks
Uncontrolled terms:Back propagation neural networks - BP neural networks - Characteristic parameter - Delinted cottonseeds - Hidden layers - Image processing technique - Network training - Node number - Nonlinear identifications - Shape characteristics - Test accuracy - Test sets - Training errors - Training speed - Univariate analysis - Varieties - Variety identification
Classification code:723.4 Artificial Intelligence - 731.1 Control Systems - 741 Light, Optics and Optical Devices - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z2.046
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671631
Title:Assessment on spraying effect of intelligent spraying robot by experiment
Authors:Geng, Changxing (1); Zhang, Kai (1); Zhang, Erpeng (1); Zhang, Junxiong (1); Li, Wei (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Geng, C.(gcxk@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:114-117
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To control plants disease with less pesticide, a spraying effect of the intelligent spraying robot for greenhouses was assessed. The information about disease location and state was obtained by machine vision sensors. Variable nozzles were driven by a three degrees of freedom cartesian coordinate manipulator, and pesticides were sprayed according to target position and lesion area. Boom location error and pesticide saving ratio were quantitative analyzed in the greenhouse experiment. The robot was tested on three disease levels. Compared with traditional spraying methods, this system saved over 60% of the herbicides. The robot can directly apply pesticide to cucumber individual lesion area and improve pesticides efficiency, reduce production costs and protect the environment.
Number of references:14
Main heading:Computer vision
Controlled terms:Disease control - Experiments - Greenhouses - Herbicides - Intelligent robots - Pesticides - Robots - Spraying
Uncontrolled terms:Cartesian coordinate - Control plants - Greenhouse experiments - Location errors - Production cost - Spraying robots - Target position - Three degrees of freedom
Classification code:402.1 Industrial and Agricultural Buildings - 461.7 Health Care - 731.6 Robot Applications - 803 Chemical Agents and Basic Industrial Chemicals - 813.1 Coating Techniques - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.020
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671629
Title:Experiment and optimization of parameters for pneumatic pollination in hybrid rice breeding
Authors:Wang, Huimin (1); Tang, Chuzhou (1); Li, Zhongqiu (1); Li, Ming (1); Huang, Zhen (1); Fang, Shilun (1)
Author affiliation:(1) Collage of Engineering, Hunan Agricultural University, Changsha 410128, China; (2) Hunan Provincial Engineering Technology Research Center for Modern Agricultural Equipment, Changsha 410128, China
Corresponding author:Tang, C.(chzhtang2002@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:101-106
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to study the effect of airflow speed, affection position and affection angle on pneumatic pollination in hybrid rice breeding, test apparatus and experiments were designed and carried out in this paper. Effect of the three factors on effective area ratio, average density and non-uniformity of pollens distribution were analyzed through orthogonal rotational quadratic combination test method, and then regression equations to describe the relationship of factors and each assessment index were established with Design-Expert8.05 data. An optimum combination of input parameters was obtained with airflow speed 21.98 m/s, affection position 16.85 cm below panicle, and affection angle 0. Effective area ratio was 88.75%, average density was 4.50 per single field, non-uniform distribution was 19.53, and the maximum desirability was 0.744. This result provides a theoretical basis for studying pneumatic pollination technology and developing pneumatic pollination equipment for hybrid rice breeding.
Number of references:20
Main heading:Pneumatics
Controlled terms:Agricultural machinery - Experiments - Optimization - Speed
Uncontrolled terms:Airflow speed - Assessment index - Breeding - Effective area - Hybrid rice - Influencing factors - Input parameter - Non-uniform distribution - Nonuniformity - Optimization of parameters - Optimum combination - Pollination - Regression equation - Rice breeding - Test apparatus - Test method - Theoretical basis
Classification code:632.3 Pneumatics - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 921.5 Optimization Techniques - 931.1 Mechanics
DOI:10.3969/j.issn.1002-6819.2012.z2.018
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671645
Title:Classification features of feather and hemp in cotton foreign fibers
Authors:Wang, Rui (1); Liu, Shuangxi (2); Wang, Qinxiang (1); Cui, Wei (1); Gao, Lijuan (1); Wang, Jinxing (2)
Author affiliation:(1) Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271000, China; (2) College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271000, China
Corresponding author:Wang, Q.(jinxingw@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:202-207
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Feather and hemp are two kinds of foreign fibers frequently found in cotton, which are difficult to identify using existing image processing methods. A novel image processing method was proposed to classify the two impurities in lint. Three color and five texture features were extracted for these impurities from machine-acquired images of lint samples. An agglomerate hierarchical cluster analysis was conducted, and dimensionality reduction was performed to determine the optimal number of color and texture features. Such agglomerate hierarchical cluster analysis resulted in rates of correct identification of 94% for feather and 95% for hemp. The optimal combination was obtained with six features (color coordinates R, G, B and energy, entropy, and moment of inertia) in the hierarchical cluster analysis. The research can provide a reference for the correct recognition in cotton foreign fibers.
Number of references:16
Main heading:Hemp fibers
Controlled terms:Cluster analysis - Color - Computer vision - Cotton - Feature extraction - Fibers - Hemp - Hierarchical systems - Optimization - Textures
Uncontrolled terms:Classification features - Color and texture features - Color coordinates - Dimensionality reduction - Foreign fiber - Hier-archical clustering - Hierarchical cluster analysis - Image processing - methods - Impurities in - Moment of inertia - Optimal combination - Optimal number - Texture features
Classification code:961 Systems Science - 933 Solid State Physics - 922 Statistical Methods - 921.5 Optimization Techniques - 819.1 Natural Fibers - 817 Plastics and Other Polymers: Products and Applications - 812 Ceramics, Refractories and Glass - 741.2 Vision - 741.1 Light/Optics - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications
DOI:10.3969/j.issn.1002-6819.2012.z2.035
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671648
Title:Exogenous abscisic acid alleviates low temperature-induced oxidative damage in seedlings of Cucumis sativus. L
Authors:Zhang, Ying (1); Jiang, Weijie (1); Yu, Hongjun (1); Yang, Xueyong (1)
Author affiliation:(1) Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Corresponding author:Jiang, W.(jiangwj@mail.caas.net.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:221-228
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Absicsic acid (ABA) as a kind of stress hormone has been applied to enhance a plant's resistance to various abiotic stresses, but the effect of ABA on sub-optimal temperature stress has not been clarified. The effects of ABA pretreatment on two cultivars of cucumber seedlings (chilling sensitive Jinyan 4 and chilling tolerant Zhongnong 27) under chilling stress were investigated. The cucumber seedlings were pretreated with 200 μmol/L ABA or water for 12 h, then divided into two groups and cultivated separately in two phytotrons with temperatures 25/18°C and 10/10°C (day/night) for seven days, respectively. The level of electrolyte leakage, the tissue water content (TWC), the chlorophyll content, the antioxidant enzyme activities and the transcriptional levels of the genes encoding these enzymes were measured. The results showed that the level of electrolyte leakage was increased under chilling stress, whereas the TWC and chlorophyll content was decreased. The activities of peroxidase (POD) and superoxide dismutase (SOD) were increased, whereas the catalase (CAT) activity was decreased under chilling stress. Pretreatment with ABA alleviated the changes of physiological features in cucumber seedlings upon chilling stress. The CAT gene transcriptional level was down-regulated and the SOD gene transcriptional level was up-regulated under chilling stress. Pretreatment with ABA also mitigated the changes of gene expression. It demonstrated that ABA may play a role in alleviating the harm of chilling stress by balancing the production and scavenging of reactive oxygen species (ROS) in cucumber seedlings. The results will provide a reference for the application of ABA to enhance the resistance of cucumber to low-temperature stress.
Number of references:34
Main heading:Plants (botany)
Controlled terms:Chlorophyll - Cultivation - Damage detection - Electrolytes - Enzymes - Genes - Oxygen - Stresses - Temperature - Tissue - Transcription
Uncontrolled terms:Abiotic stress - Abscisic acid - Antioxidant enzyme - Antioxidant enzyme activity - Chilling stress - Chlorophyll contents - Cucumber - Cucumis sativus - Electrolyte leakage - Genes encoding - Low temperatures - Oxidative damage - Physiological features - Pre-Treatment - Reactive oxygen species - Stress hormones - Superoxide dismutases - Temperature stress - Temperature-induced - Tissue water content - Transcriptional levels
Classification code:804.1 Organic Compounds - 804 Chemical Products Generally - 641.1 Thermodynamics - 821.3 Agricultural Methods - 461.9 Biology - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 461.2 Biological Materials and Tissue Engineering
DOI:10.3969/j.issn.1002-6819.2012.z2.038
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671623
Title:Development of plot precision planter based on seed tape planting method
Authors:Wang, Jiasheng (1); Shang, Shuqi (1)
Author affiliation:(1) Mechanical and Electrical Engineering College, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Shang, S.(shqingnong@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:65-71
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to improve the accuracy and uniformity of plot sowing, precision planter based on seed tape which can be available in many variations was developed. The sowing equipment includes a seed-rope weaving machine and a seed-rope seeder. Seeds can be sown on the seed tape by a vacuum meter of the seed rope weaving machine, and then the seed tape containing seeds can be twisted into a seed rope. The vacuum meter can suit different seeding rates and different row spacing by changing different drums which have different size or number of the seed cells. The seed-rope seeder can accomplish the functions of ridging, shaping the ridge, opening the furrow, laying seed ropes, covering the furrow and firming the soil against the seeds. Sowing tests of machine performance were carried out. The miss-seeding rate was 2.7% and the passing rate of seed spacing was 96.3%, which proved that the seed metering had good accuracy and uniform intervals within rows. The passing rate of seeding depth and the germination rate were up to 92.3% and 96.7% respectively, which showed that the seed-rope seeder can meet the agriculture requirements well.
Number of references:19
Main heading:Seed
Controlled terms:Agricultural machinery - Experiments - Rope - Structure (composition) - Vacuum - Weaving
Uncontrolled terms:Different sizes - Germination rates - Machine performance - Planting methods - Plot planter - Ridging - Row spacing - Seed cells - Seed metering - Seed spacing - Seeding depth - Seeding rate - Weaving machine
Classification code:951 Materials Science - 901.3 Engineering Research - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 819.5 Textile Products and Processing - 633 Vacuum Technology - 535 Rolling, Forging and Forming
DOI:10.3969/j.issn.1002-6819.2012.z2.012
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671654
Title:Purity identification of maize seed based on discrete wavelet transform and BP neural network
Authors:Cao, Weishi (1); Zhang, Chunqing (2); Wang, Jinxing (3); Liu, Shuangxi (3); Xu, Xingzhen (1)
Author affiliation:(1) Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Tai'an 271018, China; (2) College of Agricultural, Shandong Agricultural University, Tai'an 271018, China; (3) College of Mechanical and Electronic Engineering, Shandong Agricultural University, Tai'an 271018, China
Corresponding author:Liu, S.(shuangxiliu168@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:253-258
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to identify the maize seed purity efficiently, after researching on image processing methods and classification algorithm in terms of the image characteristic of maize seed, a purity identification calculation based on discrete wavelet transform(DWT) and BP neural network was presented. Through this method, the RGB color model character parameters of the maize seed crown part were obtained, then the three color values were processed and analyzed by the two-level DWT. The average of every band was selected as the input samples for BP neural network, and purity identification results of maize seed as the output samples of neural network. Results demonstrated that this method can identify the maize purity effectively with accurate identification rate reaching 94.5%.
Number of references:18
Main heading:Discrete wavelet transforms
Controlled terms:Color - Damage detection - Image processing - Image recognition - Neural networks
Uncontrolled terms:BP neural networks - Classification algorithm - Color values - Identification rates - Image characteristics - Image processing - methods - Input sample - Maize - Maize seeds - Purity - RGB Color Model
Classification code:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 723.4 Artificial Intelligence - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 921.3 Mathematical Transformations
DOI:10.3969/j.issn.1002-6819.2012.z2.044
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671628
Title:Calculation and test of electric polarization force for rice seed dielectric separation
Authors:Zhang, Benhua (1); Li, Chenghua (2); Wang, Danyang (1)
Author affiliation:(1) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China; (2) School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110168, China
Corresponding author:Li, C.(Lch@sylu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:96-100
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:When rice seeds exposed to the electric fields, they will experience the influences of polarization force. In addition, rice seeds with different vitality will pertain different dielectric constants, thus experience different polarization strength. It was verified that the rice seeds with different vitality will suffer with different polarization force through conducting rice seeds electrostatic adsorption test with dual-electrode non-uniform electric field. After analyzing and calculating the falling off conditions when rice seeds exposed to the two-wire non-uniform electric field, we have already known the position adjustment mechanism of rice seeds and the strength of the polarization force, therefore laid a foundation for how to design the dielectric seed sorting machine.
Number of references:16
Main heading:Polarization
Controlled terms:Dielectric devices - Electric fields - Seed - Separators
Uncontrolled terms:Adjustment mechanisms - Electric polarization - Electrostatic adsorption - Nonuniform electric field - Polarization forces - Polarization strength - Rice - Rice seed
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 704 Electric Components and Equipment - 714 Electronic Components and Tubes - 802.1 Chemical Plants and Equipment - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.z2.017
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671621
Title:Optimization of key operating parameters in 4GX-100 type cropland plot wheat seed combine harvester
Authors:Dai, Fei (1); Zhang, Fengwei (1); Gao, Aimin (1); Han, Zhengsheng (1)
Author affiliation:(1) School of Engineering, Gansu Agricultural University, Lanzhou 730070, China
Corresponding author:Han, Z.(hanzhengsheng@gsau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:53-58
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to avoid the distortion of breeding test data caused by remnant and mix of seeds in the internal shell cover in harvest process, adopting field breeding harvest test with self-developed 4GX-100 type cropland plot wheat seeds combine harvester, using the quadratic regression orthogonal rotational combining design, the relationships of no seeds remain rate with threshing cylinder rotation speed, feed rate and suction fan rotation speed were studied, and the mathematical model between operating parameters and the no seeds remain rate was established. The result showed that the effect degrees of 3 factors on the no seeds remain rate was as following: threshing cylinder rotation speed > feed rate > suction fan rotation speed. Through the simulating excellent-choosing equation, the best parameter combination under the field breeding harvest experiment conditions was obtained as following: the threshing cylinder rotation speed was 1586 r/min, the feed rate was 0.305 kg/s, the suction fan rotation speed was 1076 r/min, and the no seeds remain rate was achieved maximum of 99.98%, at this time, which could meet the needs of plot seeding harvester.
Number of references:20
Main heading:Harvesters
Controlled terms:Cylinders (shapes) - Fans - Harvesting - Mathematical models - Optimization - Regression analysis
Uncontrolled terms:Combine harvesters - Cylinder rotation - Experiment condition - Feed-rates - Operating parameters - Parameter combination - Quadratic regression - Rotation speed - Test data - Wheat seeds
Classification code:922.2 Mathematical Statistics - 921.5 Optimization Techniques - 921 Mathematics - 821.3 Agricultural Methods - 821.1 Agricultural Machinery and Equipment - 618.3 Blowers and Fans - 408.2 Structural Members and Shapes
DOI:10.3969/j.issn.1002-6819.2012.z2.010
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671646
Title:Rapid measurement for 3D geometric features of maize ear based on image processing
Authors:Ma, Qin (1); Jiang, Jingtao (2); Zhu, Dehai (1); Li, Shaoming (1); Mei, Shuli (1); Lü, Yongchun (1)
Author affiliation:(1) College of Information and Electrical Engineering, China Agricultural University, Beijing, China; (2) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao, China
Corresponding author:Jiang, J.(jjtao_2518@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:208-212
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:At present, the 3D geometric features of maize ear (such as ear volume, ear shape, etc) are usually measured by hand during the breeding process, which needs a lot of workforce. In addition, the subjective errors are not easy to be avoided and the efficiency of manual measurement is very low. In this paper, a rapid measurement method for 3D breeding feature of multiple maize ears is realized based on image HSV color space. Firstly, the exact contours of multiple maize ears are extracted rapidly based on the HSV histogram threshold segmentation algorithm. And the segmentation algorithm is suitable for arbitrarily placed maize ears. Secondly, based on the obtained minimum exterior rectangle of ear contour and cumulative sum procedure of contour sections, the rapid and accurate measurement of three dimensional geometric feature of maize ear is realized. Finally, taking the ZD958 and NH101 for examples, the above algorithm is verified. The measurement accuracy of ear volume can reach to 94%. The error causes are also analyzed further. The algorithm proposed in this paper can measure the 3D breeding features of multiple maize ears rapidly and greatly improve the evaluation efficiency of maize varieties.
Number of references:20
Main heading:Three dimensional
Controlled terms:Algorithms - Image segmentation - Measurement errors - Measurements - Three dimensional computer graphics
Uncontrolled terms:Accurate measurement - Cumulative sums - Geometric feature - Histogram threshold - HSV color spaces - Maize ear - Measurement accuracy - Rapid measurement - Segmentation algorithms
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 922 Statistical Methods - 921 Mathematics - 723 Computer Software, Data Handling and Applications
DOI:10.3969/j.issn.1002-6819.2012.z2.036
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671622
Title:Experimental study on pneumatic precision seed metering mechanism of field breeding planter
Authors:Sun, Qingwei (1); Wang, Yanyao (1); Wang, Dongwei (1); Luan, Guidong (1); Leng, Feng (1)
Author affiliation:(1) College of Electromechanical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Wang, Y.(wyy57@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:59-64
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Precision seed metering mechanism is the core component of field breeding planter, in order to measure the performance, the quadratic regression orthogonal rotating design was used to test the performance of pneumatic precision seed metering device on the JPS-12 seed metering performance testing bench, the range of seeding qualified index was 72.31%~98.17%, the range of miss index was 0.51%~18.7% and the range of multiples index was 0.91%~23.07%. The regression equation was received by regression analysis of the test results, and three dimensional figures were drawn with MATLAB. Various effects to the experimental indexes by each factor can be received which provided reliable basis for the further optimization design of precision seed-metering device.
Number of references:15
Main heading:Seed
Controlled terms:Experiments - Feeding - MATLAB - Pneumatics - Regression analysis
Uncontrolled terms:Core components - Experimental studies - Optimization design - Performance testing - Precision Agriculture - Quadratic regression - Regression equation - Seed metering - Seed metering devices - Seed-metering device
Classification code:632.3 Pneumatics - 691.2 Materials Handling Methods - 821.4 Agricultural Products - 901.3 Engineering Research - 921 Mathematics - 922.2 Mathematical Statistics
DOI:10.3969/j.issn.1002-6819.2012.z2.011
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671625
Title:Measurement and analysis on vibration characteristics of pneumatic seed metering device of no-till seeder
Authors:Zhao, Manquan (1); Hu, Yongwen (2); Liu, Yueqin (3)
Author affiliation:(1) Mechanical-Electrical Engineering College of Inner Mongolia Agricultural University, Huhhot 010018, China; (2) Mechanical-Electrical Administration Department of Public Security Maritime Police College, Ningbo 315801, China; (3) Mechanical, Elec. Eng. Dept. of Inner Mongolia Mechanical-Electrical Professional Technical College, Huhhot 010020, China
Corresponding author:Zhao, M.(nmgzmq@yahoo.com.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:78-83
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to determine the proper working speed of pneumatic seed metering device and correctly design the no-till planter, the spot tests and orthogonal tests on measuring the vibration of pneumatic seed metering device excited by the ground surface were carried out. Through testing, the characteristics and main parameters of vibration for seeders excited by the ground surface were obtained. The results showed that the vibration can be simulated with the dominant frequency, its frequency ranges from 35 to 70 Hz, and its acceleration ranges from 0 to 39.49 m/s2. The orthogonal test also revealed that the main factor to affect the vibration frequency and vibration amplitude was the forward speed of the seeder.
Number of references:15
Main heading:Seed
Controlled terms:Agricultural machinery - Pneumatics - Vibration measurement
Uncontrolled terms:Dominant frequency - Forward speed - Frequency - Frequency ranges - Ground surfaces - Main parameters - Measurement and analysis - No-till - No-till planters - Orthogonal test - Seed metering devices - Vibration amplitude - Vibration characteristics - Vibration frequency - Working speed
Classification code:632.3 Pneumatics - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 943.2 Mechanical Variables Measurements
DOI:10.3969/j.issn.1002-6819.2012.z2.014
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671641
Title:Design and experiment of intelligent weed recognition system
Authors:Zhao, Bo (1); Wang, Zongjia (1); Zhou, Peng (1); Mao, Wenhua (1); Zhang, Xiaochao (1)
Author affiliation:(1) State Key Laboratory of Soil-Plant-Machine System, Chinese Academy of Agricultural Mechanization, Beijing 100083, China
Corresponding author:Zhao, B.(zhaoboshi@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:184-187
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reduce the application amount of pesticide, the intelligent weed recognition system was designed, which was composed of intelligent controller, nozzle assembly and installing bracket, and a new weed recognition method based on color and location characteristics was applied to the different environment in this paper. Experimental results showed that the intelligent weed recognition system was effective in the different environments, and could locate the weed rapidly, reliably and accurately. The recognition correct rate of the intelligent weed recognition system was 97.0% in the ordinary environment, 92.5% in strong illumination environment, and 89.2% in the shadow environment. The average recognition time was 160 ms. The research can provide a reference for design of the precise spraying weeding system based on machine vision.
Number of references:22
Main heading:Design
Controlled terms:Computer vision - Experiments
Uncontrolled terms:Intelligent controllers - Recognition methods - Recognition systems - Recognition time - Spray
Classification code:408 Structural Design - 723.5 Computer Applications - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.031
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671651
Title:Nondestructive identification of hard seeds of three legume plants using near infrared spectroscopy
Authors:Zhu, Liwei (1); Huang, Yanyan (1); Wang, Qing (1); Ma, Hanxu (1); Sun, Baoqi (1); Sun, Qun (1)
Author affiliation:(1) Department of Plant Genetics and Breeding, College of Agriculture and Biotechnology, China Agricultural University/Beijing Key Laboratory of Crop Genetic Improvement, Beijing 100193, China; (2) Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
Corresponding author:Sun, Q.(sqcau@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:237-242
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To explore the applicability of the NIRS on nondestructive identification of hardseedness characteristics, in this study, near infrared spectroscopy (NIRS) models were established using near-infrared spectroscopy combined with Partial Least squares (DPLS) to investigate the hard seed characteristics of legume seeds, Codariocalyx motorius Glycine max Cassia tora L.and Sophora alopecuroides. 120 seeds of the three species were divided into two groups: calibration set (80 samples) and validation set (40 samples), which contained the same number of hard seeds and soft seeds. The influences of replicate times, spectral region and calibration samples on the discrimination rate were compared. The results showed that with 4000-5000 cm-1 of spectral range, vector correction, eight main components, the predictive value of the model fitted with the true value well. Discrimination rates of calibration and validation sets in NIR models were over 85% for Glycine max. With 4000-8000 cm-1 of spectral range, first-derivative spectroscopy, four main components, discrimination rates of calibration and validation sets were about 90% for Cassia tora L. With 4000-8000 cm-1 of spectral range, second derivative spectroscopy, eight main components, discrimination rates of calibration and validation sets were over 95% for Sophora alopecuroides.
Number of references:29
Main heading:Calibration
Controlled terms:Amino acids - Infrared spectroscopy - Near infrared spectroscopy - Seed - Technology
Uncontrolled terms:Calibration and validations - Calibration samples - Cassia tora L - Discrimination rates - Glycine max - Legume plant - Nondestructive identification - Partial least square (PLS) - Predictive values - Second derivatives - Sophora alopecuroides - Spectral range - Spectral region - Vector corrections
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 901 Engineering Profession - 821.4 Agricultural Products - 801 Chemistry - 461 Bioengineering and Biology
DOI:10.3969/j.issn.1002-6819.2012.z2.041
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671657
Title:Application of agar bed on tobacco seed germination testing
Authors:Li, Zhenhua (1); Liu, Yiling (1); Chen, Hang (2); Chen, Yao (1); Long, Mingjin (1)
Author affiliation:(1) Guizhou Tobacco Research Institute, Guiyang 550081, China; (2) College of Horticulture and Landscape Architecture, Yangtze University, Jingzhou 434025, China
Corresponding author:Li, Z.(lixing_19841014@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:270-273
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:An agar bed was developed which corresponds to a traditional paper bed, and which can be used for testing tobacco seed germination. Unprocessed seeds, primed seeds, and pelleted seeds of K326, Yun-87, and Nanjiang-3 were germinated on agar beds of different concentrations, with filter paper used as a control. When the agar concentration was 0.55%, seeds grew significantly faster than the control during early germination (p<0.05); when it was greater than 1.65%, seedlings of naked seeds wilted on the 9th day and pelleted seeds wilted on the 10th day; when the agar concentrations were 0.8% and 1.1%, there were no significant differences in germinative energy or germinative percentage compared with the control (p<0.05). agar can maintain a certain amount of water used for seed germination, and needn't shower water in the whole cycle. Seeds were easy to sow and count because they cling lightly to the agar medium and did not roll as in the control.
Number of references:17
Main heading:Seed
Controlled terms:Algae - Cultivation - Pelletizing - Polysaccharides - Testing - Tobacco
Uncontrolled terms:Agar medium - Agar-germinating bed - Filter papers - Germinative energy - Germinative percentage - Seed germination - Shower water - Tobacco seeds
Classification code:423.2 Non Mechanical Properties of Building Materials: Test Methods - 461.2 Biological Materials and Tissue Engineering - 802.3 Chemical Operations - 804.1 Organic Compounds - 821.3 Agricultural Methods - 821.4 Agricultural Products
DOI:10.3969/j.issn.1002-6819.2012.z2.047
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671634
Title:Development of plot-sowing mechanization in China
Authors:Lian, Zhengguo (1); Wang, Jiangang (1); Yang, Zhaohui (1); Shang, Shuqi (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Shang, S.(sqshang@qau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:140-145
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:With a comprehensive review of the plot-sowing mechanization development in China, this paper presents detailed discussion and analysis of research and development of seed metering devices, i.e. the key component of seeders, and precise-control technology of plot seeders. The working process of 2BY-6 plot-sowing machine designed by Qingdao Agricultural University was described, which exhibited technological innovations in flexible seed metering, electricity control drive, and automatic seeding. Suggestions are made in this paper that plot-sowing mechanization in China should be developed on the study of the fundamental theory, auto-control, and multifunction machines, and more collaborations with advanced companies abroad, providing a reference for plot-sowing machine research in China.
Number of references:30
Main heading:Agricultural machinery
Controlled terms:Manufacture - Mechanization - Technology
Uncontrolled terms:Auto-control - Control drives - Field experiment - Fundamental theory - Qingdao - Research and development - Seed metering - Seed metering devices - Seeders - Technological innovation - Working process
Classification code:537.1 Heat Treatment Processes - 601 Mechanical Design - 821.1 Agricultural Machinery and Equipment - 901 Engineering Profession
DOI:10.3969/j.issn.1002-6819.2012.z2.024
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671661
Title:Drying characteristics and color changes of infrared drying eggplant
Authors:Zhang, Lili (1); Wang, Xiangyou (2); Yu, Long (2); Zhang, Haipeng (2)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China; (2) School of Agriculture and Food Engineering, Shandong University of Technology, Zibo 255049, China
Corresponding author:Wang, X.(wxy@sdut.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:291-296
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to obtain dehydrated products with high quality, infrared drying in eggplant slices were researched at different temperatures, sample thicknesses and heating distances. The drying characteristics and color changes of eggplant slices were studied using multiple regression analysis. Two quadratic polynomial equations were obtained to evaluate the effect of drying temperature, sample thickness and heating distance on drying time and total color difference. The correlation coefficients of the two quadratic polynomial equations were 0.9888 and 0.9703, respectively. The results indicated that appropriate drying parameters (drying temperature, sample thickness and heating distance) could improve drying rate and maintained the color of eggplant slices. Energy consumption of infrared drying was 2.48 MJ/kg with 1 kg water evaporated. Compared with hot air drying, the energy consumption was saved by 22.7%.
Number of references:29
Main heading:Infrared drying
Controlled terms:Colorimetry - Energy utilization - Polynomials - Quality control - Regression analysis - Temperature
Uncontrolled terms:Color changes - Correlation coefficient - Dehydrated products - Drying characteristics - Drying parameters - Drying rates - Drying temperature - Drying time - Eggplant slices - High quality - Hot air drying - Multiple regression analysis - Quadratic polynomial - Sample thickness - Total color difference
Classification code:941.4 Optical Variables Measurements - 922.2 Mathematical Statistics - 921.1 Algebra - 913.3 Quality Assurance and Control - 642.1 Process Heating - 641.1 Thermodynamics - 525.3 Energy Utilization
DOI:10.3969/j.issn.1002-6819.2012.z2.051
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671650
Title:Development of automatic nuclear magnetic resonance screening system for haploid kernels in maize
Authors:Liu, Jin (1); Guo, Tingting (1); Yang, Peiqiang (2); Wang, Hongzhi (2); Liu, Lirong (2); Lu, Zhiyong (2); Xu, Xiaoping (2); Hu, Jingli (2); Huang, Qingming (2); Chen, Shaojiang (1)
Author affiliation:(1) National Maize Improvement Centre of China, China Agricultural University, Beijing 100193, China; (2) Niumag Corporation Ltd., Shanghai 201203, China
Corresponding author:Chen, S.(chen368@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:233-236
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:An automatic screening system for maize haploid kernel identification based on oil xenia effect and nuclear magnetic resonance (NMR) is developed to meet the demand of large-scale application in maize haploid breeding and research. The screening system was comprised of a seed feeding module, a measurement module of oil content and a screening module. The results show that the mean accuracy of this screening system reaches 92.3%. Even with the shorter signal acquisition time, the accuracy does not show a significant decline. The automatic screening system can be used in practical application in rapid selection of maize haploid seeds and can also be used to separate the samples of different oil contents.
Number of references:18
Main heading:Nuclear magnetic resonance
Controlled terms:Automatic target recognition - Intelligent systems - Screening - Signal processing
Uncontrolled terms:Automatic screening - Large-scale applications - Maize - Oil contents - Screening module - Screening system - Signal acquisitions
Classification code:524 Solid Fuels - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 723.4 Artificial Intelligence - 932.2 Nuclear Physics
DOI:10.3969/j.issn.1002-6819.2012.z2.040
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671663
Title:Status and development trend of rapeseed drying for seeding purposes
Authors:Yang, Ling (1); Yang, Mingjin (1); Chen, Jian (1); Li, Yunwu (1); Wu, Dake (1)
Author affiliation:(1) College of Engineering and Technology, Southwest University, Chongqing 400715, China
Corresponding author:Chen, J.(jianchen@swu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:309-315
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Rapeseed is the world's third leading source of vegetable oil, and also the second leading source of protein meal. The process of drying and storage of rapeseed influences physiological characteristics of the seed and production of the plant. On the basis of analysis of the requirements of rapeseed drying for seeding purposes, the status of application, study, and equipment development was presented in this paper. Then, the development trend of rapeseed drying for seeding purposes was prospected as follows: for study, subjects of effects of drying process on physiological characteristics, heat and mass transfer characteristics, control and optimization of drying process, application of CFD, and experimental study of new drying technologies should be focused on; for equipment development, medium and small scale rapeseed dryer, and dryer for plot harvesting are required, and parameter optimization and better process control strategy can be applied to the commonly used drying equipment of rapeseed to greatly improve its overall performance.
Number of references:23
Main heading:Drying
Controlled terms:Agricultural machinery - Dryers (equipment) - Equipment - Oilseeds - Physiological models - Physiology - Seed - Vegetable oils
Uncontrolled terms:Control and optimization - Development trends - Drying characteristics - Drying equipment - Drying process - Drying technology - Equipment development - Experimental studies - Heat and mass transfer - Parameter optimization - Physiological characteristics - Process control strategies - Rapeseed - Small scale
Classification code:821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 804.1 Organic Compounds - 901 Engineering Profession - 802.1 Chemical Plants and Equipment - 461.9 Biology - 461.1 Biomedical Engineering - 642.1 Process Heating
DOI:10.3969/j.issn.1002-6819.2012.z2.054
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671624
Title:Development and experiment of seed metering for grass plot seeder
Authors:Yang, Song (1); Zhang, Shumin (1); Yi, Jintao (1); Weng, Qiang (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Yang, S.(yangsong@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:72-77
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to develop a grass plot seeder, which is suitable for cultivation of fine grass varieties, a seed metering test platform was developed which has a special designed transmission mechanism and a seed cup with an adjustable ring. Several kinds of seeds can be fed by feeding mechanism in feeding cup when seeding shaft as well as distributor cone rotates one complete revolution. Seed motion and the relationship between seed outlet and seed cup were analyzed in this paper. Result of orthogonal experiment showed that the number of sweeper blades was one of the main influencing factors of the variation coefficient of seeding uniformity. When 12 sweeper blades and 9 grooves cone were used in test, the variation coefficient of the Pacesetter's seeding uniformity got to the minimum value 16.46%. This research provides a reference for grass plot seeder's development.
Number of references:14
Main heading:Experiments
Controlled terms:Agricultural machinery - Mechanisms - Stress analysis
Uncontrolled terms:Feeding mechanism - Minimum value - Orthogonal experiment - Plot seeder - Seed metering - Test platforms - Transmission mechanisms - Variation coefficient
Classification code:421 Strength of Building Materials; Mechanical Properties - 601.3 Mechanisms - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z2.013
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671637
Title:Multi-factor evaluation and modeling correction of EC-5 and 5TE soil moisture content sensors
Authors:Ye, Zhijie (1); Hong, Tiansheng (1); Chileshe, Joseph Mwape (1); Wen, Tao (1); Feng, Ruijue (1)
Author affiliation:(1) Key Laboratory of Key Technology on Agricultural Machine and Equipment, College of Engineering, South China Agricultural University, Guangzhou 510642, China; (2) School of Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong
Corresponding author:Hong, T.(tshong@scau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:157-166
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Soil property information is vital to plant growth and is a fundamental eco-system resource for terrestrial vegetation, especially soil moisture content (SMC), soil electrical conductivity (EC) and near-surface soil temperature. Wireless sensor network (WSN) technology enables monitoring soil water content changes with a high spatial and temporal resolution; however, WSN specifically requests sensors with features of low-cost, energy efficiency, dependability, and ease-of-use. In this paper, after evaluating different sensors under the demand of WSN application, a pair of ECH<inf>2</inf>O sensors were chosen and tested under experiments based on a standardized sensor characterization methodology using liquid medium. The results show that the electronics of the EC-5 and the 5TE are sensitive to temperature, electric conductivity and pH variations. In terms of the 5TE, conductivity correction is more necessary than temperature and pH, and the R2 of the conductivity correction equation reaches 0.918. However, though encountering the same temperature stability as the 5TE, EC-5 exhibits an opposite characteristic when it comes to conductivity and pH correction where pH compensation plays a more essential part with a calibrated R2 of 0.978. Moreover, the inherent temperature measuring ability of 5TE is dissatisfying and the calibration with a R2 of 0.993 is well generated, but the conductivity measuring function is well acceptable. Generally, it is concluded that both the 5TE sensor and the EC-5 sensor are suitable for WSN applications. Besides, this paper also suggested that temperature, electric conductivity and pH effects have to be compensated using appropriate correction functions respectively and various compensation models were provided accordingly.
Number of references:25
Main heading:Sensors
Controlled terms:Electric conductivity - Electric conductivity measurement - Energy efficiency - Function evaluation - Moisture determination - pH effects - Soil moisture - Wireless sensor networks
Uncontrolled terms:Characterization methods - Correction equation - Correction function - Ease-of-use - Information acquisitions - Liquid medium - Multi-factor - Near-surface - Ph compensation - pH variation - Plant growth - Sensor correction - Soil electrical conductivity - Soil property - Soil temperature - Soil water content - Temperature measuring - Temperature stability - Temporal resolution - Terrestrial vegetation - Wsn applications
Classification code:944.2 Moisture Measurements - 942.2 Electric Variables Measurements - 921.6 Numerical Methods - 801.1 Chemistry, General - 801 Chemistry - 732 Control Devices - 701.1 Electricity: Basic Concepts and Phenomena - 525.2 Energy Conservation - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2012.z2.027
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671635
Title:Effect of ridge culture and no-tillage on soil moisture and maize yield
Authors:Wang, Qingjie (1); Li, Hongwen (1); He, Jin (1); Li, Hui (1); Sarker, Khokan Kumer (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Li, H.(lhwen@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:146-150
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:To obtain a suitable ridge tillage technology model for the corn ridge system, three treatments, such as traditional ridge tillage, ridge tillage covered with chopped straw and ridge tillage with high-stubble standing, were compared on basis of the long-term(five years) framework in Sujiatun, Liaoning Province in this study.. The results showed that ridge tillage for five years improved the soil structure, soil moisture and water use efficiency. The ridge tillage with chopped straw cover improved the crop yield and water use efficiency with the highest difference by 4.1%-10.7% and 5.4%-10.2%, respectively, while the ridge tillage with high-stubble standing improved the crop yields and water use efficiency by 1.9%-6.4% and 4.1%-7.9%, respectively, compared to the traditional ridge tillage. Consequently, ridge tillage with chopped straw cover was proved to be the best effects among the three treatments. The results provide a reference for the extension of the ridge tillage in Liaoning province.
Number of references:12
Main heading:Agriculture
Controlled terms:Agricultural machinery - Efficiency - Soil moisture - Soils - Straw - Water supply
Uncontrolled terms:Maize - No tillage - Ridge tillage - Soil water - Yield
Classification code:446.1 Water Supply Systems - 483.1 Soils and Soil Mechanics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 913.1 Production Engineering
DOI:10.3969/j.issn.1002-6819.2012.z2.025
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671638
Title:Acquisition and transmission system for grain traceability based on two-dimensional barcode and ARM
Authors:Liang, Kun (1); Shen, Mingxia (1); Ge, Yufeng (2); Lu, Shuntao (1)
Author affiliation:(1) College of Engineering, Nanjing Agricultural University, Nanjing 210031, China; (2) Biological and Agricultural Engineering Department, Texas A and M University, College Station, TX 77843, United States
Corresponding author:Shen, M.(mingxia@njau.edu.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:167-171
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Grains of different origins are mixed throughout the supply chain according to their grades and usage, which brings great challenge in information identification for grain traceability system. This paper presented a method to use two-dimensional barcodes printed on the surface of a grain tracer as the information carrier. An embedded system based on ARM technology to retrieve the information in 2D barcodes and obtain the GPS and environmental information for grain field was developed, and the acquisition information transmitted though GPRS network. The system realized automatic collection and wireless transmission of grain identification, grain field condition information (atmosphere temperature, atmosphere relative humidity, luminosity and CO<inf>2</inf>). The system can provide an effective means for fast, low-cost tracking of grains to harvest field to guarantee product safety and quality for the grain industry.
Number of references:17
Main heading:Two dimensional
Controlled terms:Bar codes - Carbon dioxide - Environmental technology - Global positioning system - Supply chains
Uncontrolled terms:2-D barcodes - ARM - Atmosphere temperature - Different origins - Environmental information - Field conditions - GPRS - GPRS network - Grain industry - Information carriers - Product safety - Traceability systems - Tracer - Transmission systems - Two-dimensional barcode - Wireless transmissions
Classification code:913 Production Planning and Control; Manufacturing - 912 Industrial Engineering and Management - 804.2 Inorganic Compounds - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 716.3 Radio Systems and Equipment - 454 Environmental Engineering
DOI:10.3969/j.issn.1002-6819.2012.z2.028
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671632
Title:Bending and shearing characteristics of cotton seedling stem
Authors:Zong, Wangyuan (1); Huang, Xiaomao (1); Xu, Aiying (2); Fan, Xiuwen (2); Huang, Xincheng (2)
Author affiliation:(1) College of Engineering, Huazhong Agricultural University, Wuhan 430070, China; (2) College of Mechanical and Electrical Engineering, Tarim University, Alar 843300, China
Corresponding author:Zong, W.(zongwangyuan@mail.hzau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:118-124
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to analyze and evaluate the resist ability of cotton seedling to wind and sandstorm damage in Xinjiang, China, the bending resistance strength and shearing resistance strength were determined by experiments for cotton stem in its seedling stage rather than maturity period. The bending force and shearing force were measured by using a universal testing machine TMS-PRO with a specialized three-point fixture, and the bending resistance strength and shearing resistance strength were calculated from these data. The experiments were conducted at different stage of cotton seedlings life. The shearing force and bending force of cotton seedling stem increases with the age, but it is not obvious in the first five weeks. The results show that the five weeks old cotton seedlings are still weak against external damage, the maximum bending force that a cotton seedling stem can be suffered is 1.98 N and the maximum shearing force is 101.93 N. After five weeks, these values climb rapidly, and they reach to 68.27 and 622.77 N respectively in the ninth week.
Number of references:22
Main heading:Bending strength
Controlled terms:Cotton - Experiments - Mechanical properties - Shearing - Storms
Uncontrolled terms:Bending force - Bending resistance - Shearing force - Shearing resistance - Universal testing machines - Xinjiang
Classification code:421 Strength of Building Materials; Mechanical Properties - 443.3 Precipitation - 604.1 Metal Cutting - 819.1 Natural Fibers - 901.3 Engineering Research - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z2.021
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671642
Title:Construction and in-field experiment of low-cost binocular vision platform for pineapple harvesting robot
Authors:Li, Bin (1); Wang, Haifeng (2); Huang, Wenqian (1); Zhang, Chi (1)
Author affiliation:(1) National Engineering Research Center of Intelligent Equipment for Agriculture, Beijing 100089, China; (2) Chinese Academy of Modern Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author:Huang, W.(huangwq@nercita.org.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:188-192
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Vision system is one of key parts of agricultural harvesting robots, which provides the fruit's position information for navigating the manipulator. Considering its applications in agriculture and the pineapple is big enough for recognition, this study presents a low-cost binocular vision platform for pineapple harvesting robots, which consists of low-cost CMOS (Complementary Metal Oxide Semiconductor) image sensors, a tripod, a binocular pan, a PC and software system; The calibration model and the calibration software were developed based on C and OpenCV version 1.1, and Matlab calibration toolbox separately; The Zhang's algorithm was employed during the calibration. By experiment, the suitable calibration method for the constructed platform was selected. Based on the low-cost vision platform and developed pineapple recognition algorithms, 3D position calculation experiments for pineapples were conducted in a pineapple field of Zhanjiang. The results showed that the depth errors were less than 6-8 cm when the depth distance was around 1 m, and the errors were less than 2-3 cm after correcting the whole system. The low-cost platform performed well and its feasibility was proved. This study can provide a reference for the development of pineapple harvesting robots.
Number of references:15
Main heading:Computer vision
Controlled terms:Algorithms - Binocular vision - Calibration - Computer software - Costs - Errors - Experiments - Harvesting - Manipulators - Robots
Uncontrolled terms:3D positions - Calibration method - Calibration model - Calibration softwares - CMOS (complementary metal oxide semiconductor) - Harvesting robot - In-field - Key parts - Low-cost - Position information - Recognition algorithm - Software systems - Vision systems
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 911 Cost and Value Engineering; Industrial Economics - 901.3 Engineering Research - 821.3 Agricultural Methods - 741.2 Vision - 731 Automatic Control Principles and Applications - 723 Computer Software, Data Handling and Applications
DOI:10.3969/j.issn.1002-6819.2012.z2.032
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671633
Title:Theoretical analysis and experiment of all terrain adaptive locomotion vehicle
Authors:Liu, Pingyi (1); Li, Haitao (1); Zhang, Shaoying (1); Wei, Wenjun (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Wei, W.(mech01@cau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:134-139
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:According to the irregularities and complexities of farmland, the terrain adaptive locomotion theory of all terrain adaptive locomotion vehicle (ATALV) was proposed and the key terrain adaptive parameters was analyzed and calculated, which was also verified by the computer simulation of terrain adaptive locomotion and kinematic analysis on specific terrain. The key parameters were designed and the small scale vehicle was manufactured. The experiments of terrain adaptive locomotion process and utmost terrain adaptive locomotion were conducted in order to verify the terrain adaptive locomotion theoretical basis, and some tests of general operating performance proved ATALV's stability and reliability. All the theoretical analyses and experiments show that ATALV can be used in mountain, hill, slope, grassland and rough farmland, etc. The research can provide theoretical and experimental references for ATALV applied in practice.
Number of references:20
Main heading:Landforms
Controlled terms:Automobile manufacture - Computer simulation - Experiments - Farms - Vehicles
Uncontrolled terms:Adaptive locomotion - Adaptive parameters - All terrain adaptive - Key parameters - Kinematic Analysis - Operating performance - Small scale - Theoretical basis
Classification code:432 Highway Transportation - 481.1 Geology - 662.1 Automobiles - 723.5 Computer Applications - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.023
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671615
Title:Design and experiment of collocated-copying and semi-low-height planting-unit for corn precision seeder
Authors:Cui, Tao (1); Zhang, Dongxing (1); Yang, Li (1); Gao, Nana (1)
Author affiliation:(1) College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author:Yang, L.(yl_hb68@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:18-23
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Aiming at the problem of poor uniformity of row spacing, seed spacing and planting depth caused by traditional planting units which couldn't meet the needs of collocated-copying and low planting height simultaneously, a new type of planting unit was designed. Compared with traditional planting units with planting height of 400-440 mm, the planting height of the new unit was only 280 mm and at the same time the planting-unit had the function of collocated-copying. The configuration parameters of crucial components, such as the diameter of copying wheel, the length of copying wheel bracket, the length and tilt angle of anti-block of copying wheel, and etc, were analyzed and determined. The minimum and maximum planting depth was 40 and 90 mm, respectively. So the planting-unit had a greater adjustment range of planting depth and could meet the needs of precision planting in most cases. Field experimental results indicated that the new designed unit could accomplish corn precision planting, and the qualified index of seed spacing, reseeding index, miss planting index, coefficient of variation of spacing and uniformity of planting depth were 94.8%, 2.9%, 2.3%, 15.1% and 88.3% respectively, and all of which were obviously better than the corresponding indexes of the traditional planting unit with high planting height.
Number of references:20
Main heading:Seed
Controlled terms:Agricultural machinery - Structure (composition) - Wheels
Uncontrolled terms:Collocated-copying - Corn precision planter - Optimazation - Planting unit - Semi-low-height planting
Classification code:601.2 Machine Components - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 951 Materials Science
DOI:10.3969/j.issn.1002-6819.2012.z2.004
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671636
Title:Comprehensive evaluation of soil fertility quality based on field data
Authors:Yang, Yujian (1); Tong, Xueqin (1); Ruan, Huaijun (1)
Author affiliation:(1) S and T Information and Engineering Center of Shandong Academy of Agricultural Science, Jinan 250100, China
Corresponding author:Ruan, H.(yyjtshkh@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:151-156
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Based on a total of 104 topsoil (0-20 cm) samples, combining with Grid sampling, the main objective is to develop the comprehensive evaluation and quantitative model of soil fertility quality, which included soil available potassium, soil available phosphorus, soil organic matter, soil pH value and soil alkali hydrolysable nitrogen. In the study, Nemerow method of soil fertility quality, the statistical method, sequential gaussian simulation and the spatial lag model were comprehensively applied to clarify the spatial association among the regional variables. The results of soil fertility quality index (SFQI) based on Nemerow method indicated that there was the medium soil fertility quality in the whole, and the soil fertility quality was determined by SOM content in the study area, the positive correlation relation is between SOM content and SFQI. The study also established the spatial lag model among the regional variables; the spatial lag model has the better simulation accuracy than classical regression model. Lack of soil available phosphorus in Jinan city located in Xiaoqinghe river, the study has important practical significance, especially phosphorus fertility utilization. The article also developed the 2000 times sequential gaussian simulation (SGS) maps of SFQI, which generally provide the gradient changes from SFQI on basis of soil property Nemerow method, the obvious high value area located in the center in the zoning study area, centered in the high area, the continued value distributed extending from interior to exterior, there existed in relatively obvious distribution mode on the whole, no sudden changes of SFQI distribution, which promoted the information and scientific decision-making of soil testing recipes.
Number of references:13
Main heading:Quality control
Controlled terms:Computer simulation - Gaussian distribution - Geologic models - Nutrients - Phosphorus - Potassium - Regression analysis - Soil testing - Soils
Uncontrolled terms:Available phosphorus - Comprehensive evaluation - Distribution modes - Field data - Gradient change - Positive correlations - Precision Agriculture - Quality indices - Quantitative models - Regional variable - Regression model - Sequential Gaussian simulation - Simulation accuracy - Soil fertility - Soil organic matters - Soil pH - Soil property - Spatial lags - Study areas - Sudden change
Classification code:913.3 Quality Assurance and Control - 821.2 Agricultural Chemicals - 804 Chemical Products Generally - 922.2 Mathematical Statistics - 723.5 Computer Applications - 483.1 Soils and Soil Mechanics - 481.1 Geology - 549.1 Alkali Metals
DOI:10.3969/j.issn.1002-6819.2012.z2.026
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671640
Title:Monitoring method of separation loss in tangential-axial combine harvester
Authors:Liang, Zhenwei (1); Li, Yaoming (1); Zhao, Zhan (1); Chen, Yi (1)
Author affiliation:(1) Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Liang, Z.(liangzhenwei518@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:179-183
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to monitor the separation loss of combine harvester automatically in the field work process, an indirect grain separation loss monitoring method was promoted in this paper. By analysis the distribution of mixed material under the vertical and horizontal direction of the longitudinal-axial drum on different feeding quantity, mathematical model among the grain quantity of monitoring regional, feeding quantity and total separation losses was established; installed the grain loss monitoring sensor which utilize piezoelectric polyvinylidene fluoride (PVDF) film as sensitive material in the selected area under the concave to fulfill the task of monitoring separation loss according to established mathematical model. Field tests results showed that the measurement errors of grain separation loss were less than 3.4% when harvesting rice.
Number of references:16
Main heading:Grain (agricultural product)
Controlled terms:Combines - Experiments - Harvesters - Mathematical models - Monitoring - Separation
Uncontrolled terms:Combine harvesters - Field test - Field works - Grain loss - Longitudinal-axial drums - Mathematical relationship - Mixed materials - Monitoring methods - Monitoring sensors - Polyvinylidene fluorides - Sensitive materials
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921 Mathematics - 901.3 Engineering Research - 821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 802.3 Chemical Operations
DOI:10.3969/j.issn.1002-6819.2012.z2.030
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671618
Title:Development of 2ZFS-1A multifunctional tobacco transplanting machine
Authors:Cui, Wei (1); Liu, Shuangxi (2); Gao, Lijuan (1); Wang, Rui (1); Wang, Jinxing (2)
Author affiliation:(1) Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Shandong Agricultural University, Taian 271018, China; (2) College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Corresponding author:Wang, J.(jinxingw@163.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:36-41
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to solve the low survival rate of tobacco seedling transplanting and low fertilizer utilization, 2ZFS-1A multifunctional tobacco transplanting machine was developed. The machine is mainly composed of a fixed quantitative fertilization stirring system, throwing seedling transplanting system, watering system, transmission system, frame and safety protective cover. In the transmission system driven, the fixed quantitative fertilization stirring system realizes the functions of the fertilizers sentinel quantitative rating and stirring. The machine can also achieve the integrated operations of cast seedling transplanting and watering. The transplanting machine performance test and production test show that the transplanting machine's mass error is less than 0.1%, fertilization amount error is 0.55%-1.3%, spacing error is 1%-2%, fertilization depth error is 4%-8%, leakage seeding rate and injury seeding rate are less than 2%, and the production rate with stable performance is up to 98%, the failure rate is lower than 0.03%. The transplanting machine can meet the requirements of tobacco cultivation agronomic. The study provides reference for tobacco multifunctional operating machinery.
Number of references:19
Main heading:Tobacco
Controlled terms:Agricultural machinery - Design - Experiments - Fertilizers
Uncontrolled terms:Failure rate - Integrated Operations - Operating machineries - Production rates - Production test - Protective cover - Seeding rate - Seedling transplanting - Spacing errors - Survival rate - Transmission systems - Transplanting machine - Watering systems
Classification code:408 Structural Design - 804 Chemical Products Generally - 821.1 Agricultural Machinery and Equipment - 821.4 Agricultural Products - 901.3 Engineering Research
DOI:10.3969/j.issn.1002-6819.2012.z2.007
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671616
Title:Development of chain-driving lever type machine for rape stalk dividing
Authors:Luo, Haifeng (1); Tang, Chuzhou (1); Wu, Mingliang (1); Deng, Ping (1); Tang, Lun (1); Huang, Zhen (1)
Author affiliation:(1) College of Engineering, Hunan Agricultural University, Changsha 410128, China
Corresponding author:Tang, C.(chzhtang2002@sina.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:24-28
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:The Chain-driving lever type machine was designed to resolve the problem of stalk dividing in rape harvesting, which had much difficulty in stalk dividing due to the across branches. Self-propelled walk chassis equipped with DC variable speed motor, while double power was used to achieve independent control of stalk dividing and walking. Then, acrylic material with arc-shaped structure was the critical working parts in stalk dividing, side expansion rollers were designed for sub-compartment forming. Tests showed that speed of 0.6 m/s, angle of 60°-70° for driving lever obliquity, chain speed of 1.1-1.2 m/s, the effect of dividing stalk was better. It could achieve the stalk dividing operation for rape before mechanized harvesting.
Number of references:15
Main heading:Agricultural machinery
Controlled terms:Agricultural engineering - Agriculture - Chains
Uncontrolled terms:Acrylic material - Development - Driving lever - Independent control - Mechanized harvesting - Rape - Stalk dividing - Variable speed - Working parts
Classification code:602.1 Mechanical Drives - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.1 Agricultural Machinery and Equipment
DOI:10.3969/j.issn.1002-6819.2012.z2.005
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671643
Title:Path recognition method of agricultural vehicle in different illumination environments
Authors:Zhao, Bo (1); Fan, Yuntao (1); Mao, Wenhua (1); Zhou, Peng (1); Zhang, Xiaochao (1)
Author affiliation:(1) State Key Laboratory of Soil-Plant-Machine System, Chinese Academy of Agricultural Mechanization, Beijing 100083, China
Corresponding author:Zhao, B.(zhaoboshi@126.com)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:193-196
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to improve the adaptability of the vision navigation system in the agricultural vehicle to various environments, the path recognition method for different illumination environments was proposed in this paper. Firstly, the influence of different illumination environments on the path recognition for the vision navigation system of the agricultural vehicle was investigated. Secondly, on basis of path recognition in the ordinary environment, a new method mainly composed of histogram equalization algorithm and center line detecting algorithm was applied in the path recognition in different illumination environment. Finally, the many images of different illumination environment were used to verify proposed method. Experimental results showed that the new method was effective in various illumination environments, and could obtain the target navigation path reliably and accurately. The recognition correct rate of the vision navigation system was 92%, and the average cost time was 245 ms. The research can provide a reference for design of the vision navigation system in the agricultural vehicle.
Number of references:20
Main heading:Computer vision
Controlled terms:Agriculture - Algorithms - Navigation - Navigation systems - Vehicles
Uncontrolled terms:Agricultural vehicles - Average cost - Histogram equalizations - Line detecting - Navigation paths - Path recognition - Various environments - Vision navigation
Classification code:921 Mathematics - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 716.3 Radio Systems and Equipment - 434.4 Waterway Navigation - 432 Highway Transportation
DOI:10.3969/j.issn.1002-6819.2012.z2.033
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671620
Title:Design and test of multifunctional curved-surface shovel in digging harvest
Authors:Yang, Ranbing (1); Shang, Shuqi (1)
Author affiliation:(1) College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Corresponding author:Shang, S.(sqshang@qau.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:47-52
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:Traditional root-tuber crops digging shovel has many disadvantages, such as high resistance, poor soil leading, and badly concentrated nut effect, and so on. According to the disadvantages mentioned above, a multifunctional curved-surface shovel was designed. In order to improve digging penetration performance and oil separated rate, longitudinal plane of digging shovel was designed with two combined sections of ploughshare surface and arc surface. To make soil mattress smoothly and improve concentrated nut effect rate, transverse plane of digging shovel was designed with multifunctional combined sections of spline curve fitting. Comparison test with wide applied ordinary traditional planar polygon shovel shows that, with multifunctional curved-surface shovel, soil-separated rate is improved 4.8% and nut-gathering rate is improved 1.2%, nut-losing rate is reduced 1.03%. However, the digging resistance in their moving process is similar. The design of digging shovel provides reference resources for subsequent clamping device and soil separated device operation.
Number of references:16
Main heading:Shovels
Controlled terms:Crops - Curve fitting - Design - Harvesters - Separation - Soils - Tubes (components)
Uncontrolled terms:Comparison test - Curved surfaces - Design and tests - Device operations - Digging - Digging shovels - High resistance - Penetration performance - Root-tuber - Spline curve - Tests - Transverse planes
Classification code:821.4 Agricultural Products - 821.1 Agricultural Machinery and Equipment - 802.3 Chemical Operations - 921.6 Numerical Methods - 616.1 Heat Exchange Equipment and Components - 408 Structural Design - 405.1 Construction Equipment - 483.1 Soils and Soil Mechanics
DOI:10.3969/j.issn.1002-6819.2012.z2.009
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

Accession number:20124615671660
Title:Influences of drying parameters on efficiency rate of paddy rice in deep fixed-bed
Authors:Wang, Danyang (1); Li, Chenghua (3); Tong, Ling (1); Zhang, Benhua (1); Liu, Qing (2); Hu, Yanqing (1)
Author affiliation:(1) College of Engineering, Shenyang Agricultural University, Shenyang 110866, China; (2) Institute of Agricultural Product Processing, Chinese Academy of Agricultural Engineering, Beijing 100125, China; (3) College of Mechanical Engineering, Shenyang Ligong University, Shenyang 110168, China
Corresponding author:Li, C.(lch@mail.sylu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:28
Issue:SUPPL. 2
Issue date:October 2012
Publication year:2012
Pages:285-290
Language:English
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to reduce drying energy consumption for paddy rice and enhance the production efficiency, a new concept of efficiency rate which showed thermodynamic characters was defined for paddy drying in a deep fixed-bed based on analyzing the existing indexes. A series of paddy drying experiments were conducted in a deep fixed-bed. Influencing laws of each experiment factor on the new index were investigated. Five-factor quadratics rotary orthogonal combination was adopted to establish the relationship between performance function and each factor, and the effects of each factor on the efficiency rate were investigated. An optimum range under 95% probability of efficiency rate lower than 2000 kJ/(kg&middoth) was obtained as follows: drying air temperature, drying air velocity, paddy thickness, original moisture content and tempering time were 56.2-57.7°C, 0.89-0.96 m/s, 35.3-37.0 cm, 21.31%-21.86%, 2.87-3.16 h, respectively. The results provide a reference for saving energy of paddy drying in the practice and the research of paddy drying process simulation.
Number of references:25
Main heading:Drying
Controlled terms:Air - Dryers (equipment) - Efficiency - Energy utilization - Experiments - Grain (agricultural product)
Uncontrolled terms:Drying air - Drying energy consumption - Drying parameters - Drying process - Dyers - Fixed-bed - New indices - Paddy rice - Performance functions - Production efficiency - Saving energy
Classification code:913.1 Production Engineering - 901.3 Engineering Research - 821.4 Agricultural Products - 804 Chemical Products Generally - 802.1 Chemical Plants and Equipment - 642.1 Process Heating - 525.3 Energy Utilization
DOI:10.3969/j.issn.1002-6819.2012.z2.050
Database:Compendex
Compilation and indexing terms, Copyright 2012 Elsevier Inc.

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