Abstract
Control accuracy significantly affects the performances of boom sprayer. In this study, we develop a precise autocontrol technology based on the vehicle speed feedback. We utilize the auxiliary antidrift system of wind-curtain type air flow and the variable spraying control system for adaptive fertilizing and online measuring of working conditions. Experimental results demonstrate that the variable spraying control system could keep the speed error less than 3%. The air flow significantly improves the penetration of spraying, decreases the fog drip, and increases the pesticide utility. Benefitting from the auxiliary air flow, the average utility of pesticide is improved from 26.76% to 37.98%. Additionally, the speed feedback control reduces the consumption of pesticide by more than 12%.
Highlights
As an important technology for agriculture, spraying has attracted increasing attention over the world [1,2,3,4]
In this study, we develop a novel variable control system boom sprayer based on the wind-curtain air flow and online inspection of working condition
The results demonstrate that for different speeds the relative tolerances based on all set values are less than 3%
Summary
As an important technology for agriculture, spraying has attracted increasing attention over the world [1,2,3,4]. A set of studies have been carried out to improve the performance of spraying, including reduction of pesticide consumption, decreasing the size of fog drip, and increasing the penetration [5,6,7]. As the development of the remote sensing (RS), the geography information systems (GIS), and the global positioning systems (GPS), which are always referred to as the 3S technology, the air flow antidrift technologies have been widely used on the boom sprayer for higher control accuracy. The reduction of pesticide requires further improvement To address these problems, in this study, we develop a novel variable control system boom sprayer based on the wind-curtain air flow and online inspection of working condition.
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