Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education of PRC, Jiangsu University, Zhenjiang 212300, China.
Key Laboratory of Plant Protection Engineering, Ministry of Agriculture and Rural Affairs of PRC, Jiangsu University, Zhenjiang 212300, China.
Sensors (Basel). 2019 Jan 28;19(3):537. doi: 10.3390/s19030537.
Rapid detection of spraying deposit can contribute to the precision application of plant protection products. In this study, a novel capacitor sensor system was implemented for measuring the spray deposit immediately after herbicide application. Herbicides with different formulations and nozzles in different mode types were included to test the impact on the capacitance of this system. The results showed that there was a linear relationship between the deposit mass and the digital voltage signals of the capacitance on the sensor surface with spray droplets. The linear models were similar for water and the spray mixtures with non-ionized herbicides usually in formulations of emulsifiable concentrates and suspension concentrates. However, the ionized herbicides in formulation of aqueous solutions presented a unique linear model. With this novel sensor, it is possible to monitor the deposit mass in real-time shortly after the pesticide application. This will contribute to the precision application of plant protection chemicals in the fields.
快速检测喷雾沉积量有助于实现植保产品的精确应用。本研究中，我们构建了一种新型的电容传感器系统，用于在施药后立即测量喷雾沉积量。本研究中，采用不同剂型和不同模式类型的喷嘴，以测试其对系统电容的影响。结果表明，在传感器表面有喷雾液滴时，沉积量与电容的数字电压信号之间存在线性关系。水和无离子型除草剂喷雾混合物的线性模型通常与乳油和悬浮剂等剂型相似，而离子型除草剂在水剂剂型中则呈现出独特的线性模型。利用这种新型传感器，可以在农药施药后不久实时监测沉积量。这将有助于在田间实现植保化学品的精确应用。
