陈盛德, 兰玉彬, 李继宇, 周志艳, 金济, 刘爱民. 小型无人直升机喷雾参数对杂交水稻冠层雾滴沉积分布的影响[J]. 农业工程学报, 2016, 32(17): 40-46. DOI: 10.11975/j.issn.1002-6819.2016.17.006
    引用本文: 陈盛德, 兰玉彬, 李继宇, 周志艳, 金济, 刘爱民. 小型无人直升机喷雾参数对杂交水稻冠层雾滴沉积分布的影响[J]. 农业工程学报, 2016, 32(17): 40-46. DOI: 10.11975/j.issn.1002-6819.2016.17.006
    Chen Shengde, Lan Yubin, Li Jiyu, Zhou Zhiyan, Jin Ji, Liu Aimin. Effect of spray parameters of small unmanned helicopter on distribution regularity of droplet deposition in hybrid rice canopy[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2016, 32(17): 40-46. DOI: 10.11975/j.issn.1002-6819.2016.17.006
    Citation: Chen Shengde, Lan Yubin, Li Jiyu, Zhou Zhiyan, Jin Ji, Liu Aimin. Effect of spray parameters of small unmanned helicopter on distribution regularity of droplet deposition in hybrid rice canopy[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2016, 32(17): 40-46. DOI: 10.11975/j.issn.1002-6819.2016.17.006

    小型无人直升机喷雾参数对杂交水稻冠层雾滴沉积分布的影响

    Effect of spray parameters of small unmanned helicopter on distribution regularity of droplet deposition in hybrid rice canopy

    • 摘要: 为了初探小型无人直升机航空喷施雾滴在水稻冠层沉积分布规律,主要通过不同的飞行参数研究了不同喷雾作业参数对水稻冠层的雾滴沉积分布的影响。该试验以HY-B-10L型单旋翼电动无人机搭载北斗定位系统UB351绘制作业轨迹,以质量分数为5‰的丽春红2R水溶液模拟生长调节剂喷施沉积情况,以图像处理软件DepositScan来分析靶区和非靶区的雾滴沉积参数得出雾滴的沉积分布结果。结果表明:3次试验中的雾滴沉积分布趋势均相似,且飞行高度和飞行速度对靶区内采集点上雾滴平均沉积量影响均显著,对雾滴沉积均匀性影响并不显著。3次试验中靶区的雾滴沉积量随着高度的增加而减少,总雾滴沉积量分别为2.380、1.905、1.156 μL/cm2,采集点的平均沉积量分别为0.198、0.159、0.064 μL/cm2;在作业高度为1.92 m时雾滴沉积平均均匀性最佳,且非靶区的雾滴漂移总量最少,为0.174 μL/cm2。另外,第一、二条采集带上靶区内的雾滴沉积量均明显多于作业速度较大的第三条采集带上的雾滴沉积量,3次试验中,第一、二条采集带上雾滴沉积总量的平均值分别高于第三条采集带上雾滴沉积总量的184.27%、53.51%、72.31%;且由于外界风场的影响,作业航线下风向的雾滴沉积量和漂移距离均大于作业航线上风向的雾滴沉积量和漂移距离;以及由于飞行速度的影响,非靶区航线下风向第三条雾滴采集上的雾滴漂移量均大于第一、二条雾滴采集带上的雾滴漂移量。该结果较好地全面揭示了作业参数对航空喷施雾滴沉积分布结果的影响,并从风场因素方面推测了对雾滴沉积的影响,对药液的合理喷施、提高喷施效率具有十分重要的指导意义。

       

      Abstract: Abstract: In order to find out the distribution regularity of droplet deposition of small unmanned helicopter in rice canopy, spray test with different flight parameters was carried out to study the effect of different operation parameters on the distribution of droplet deposition. The distribution regularity of droplet deposition was obtained by drawing the operation trajectory with BeiDou Navigation Satellite System carried by one-rotor small unmanned helicopter HY-B-10L. The spraying and deposition of the growth regulator (Ponceau 2R solution with the mass fraction of 5‰) were simulated, and the parameters results of droplet deposition in the target areas and non-target areas were analyzed by Image processing software Deposit-Scan. The analysis results showed that: The trends of droplet deposition were similar in the 3 trials, the parameters of flight height and flight speed both had a great influence on the mean droplet deposition amount in the collection point of target areas but had not significant influence on the uniformity of droplet deposition. In the target area, the droplet deposition decreased with the increase of the flight height in the 3 trials. The total droplet deposition was respectively 2.380, 1.905 and 1.156 μL/cm2, and the average droplet deposition of collection point was respectively 0.198, 0.159 and 0.064 μL/cm2. The uniformity of droplets deposition was the best in the flight height of 1.92 m, the best value of uniformity could reach 29%, and the amount of droplets drift was 0.174 μL/cm2, which was the least in the drift area in this case, while the amount of droplets drift in the flight height of 3.15 m was 0.270 μL/cm2, which was the largest value. The larger value of droplet drift was 0.205 μL/cm2 in the flight height of 1.33 m, and it had the worst uniformity in the 3 trials. In addition, the amounts of the droplet deposition in the first and second collection zone were clearly more than the amount of the third collection zone which had a faster flight speed in the target area. In the 3 trials, the average amount of droplet deposition in the first and second collection zone was higher than the amount in the third collection zone by 184.27%, 53.51% and 72.31% respectively. Due to the effect of environmental wind field, the amount of droplets deposition and the drift distance of droplets on the left side of flight route were more than that on the right side of flight route, and with the effect of flight speed, the amount of droplet deposition in the third collection zone on the left side of flight route was more than the droplet deposition in the first and second collection zone on the right side in the drift area. The results have fully revealed the effect of operation parameters on the distribution regularity of droplet deposition and drift, and surmised the impact on the droplet deposition from the perspective of wind field factor. It also has an important guiding significance for the reasonable spraying and increasing the spraying efficiency.

       

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