Authors

Abstract

During the field application of pesticides by plant protection UAV, due to the interference of meteorological factors or operating parameters, the deposition effect of droplets is poor. In order to explore the impact of the nozzle angle of plant protection UAV on droplet deposition distribution, this article is based on field experiments and collects data on different flight speeds (1, 3, 5 m/s) and nozzle angles (±60°, ±45°, ±30°, 0°), and performs variance analysis and regression analysis on the test results. The results showed that adjusting the nozzle angle had a significant effect on the amount of droplet deposition and deposition uniformity. Compared with 0°, the nozzle angle of -30° increased the amount of deposition by 76.94% and 61.04% at flight speeds of 1.2 m/s and 3 m/s, respectively. The flight speed had a significant effect on the amount of droplet deposition, and the increase in flight speed decreased the amount of droplet deposition by 55.97%-77.06% and had no significant effect on the uniformity of droplet deposition. This study provides a reference for improving the droplet deposition effect of plant protection UAV field pesticide application operations.

Abstract in Chinese

植保无人机在田间施药过程中，由于气象因素或作业参数的干扰，导致雾滴的沉积效果较差。为了探究植保无人机的喷头角度对雾滴沉积分布的影响，本文基于田间试验，采集不同飞行速度(1、3、5m/s)与喷头角度(±60°、±45°、±30°、0°)下的雾滴沉积分布情况，并对试验结果进行方差分析和回归分析。结果表明，调节喷头角度对雾滴沉积量与沉积均匀性影响显著，喷头角度-30°在飞行速度1.2m/s与3m/s下的沉积量分别增加了76.94%与61.04%。飞行速度对雾滴沉积量影响显著，飞行速度增加雾滴沉积量降低了55.97%-77.06%，并且对雾滴沉积均匀性影响不显著。该研究对提高植保无人机田间施药作业的雾滴沉积效果提供参考。