基于模糊控制的棉田变量对靶喷药除草系统设计

Weed Control System for Variable Target Spraying Based on Fuzzy Control

为实现自动精确去除棉田杂草,减少除草剂用量,设计了一种以S3C2410处理器为核心,采用模糊控制算法的变量对靶喷药除草系统,实现了自动识别杂草以及根据采集车速、杂草密度信息自动调整流量的功能。设计了双输入、单输出模糊控制器,并对其进行了仿真研究。仿真结果表明,利用该控制器能实现喷药量随车速及杂草密度变化而实时改变。在室内搭建了模拟棉田环境的变量对靶喷药试验台,对喷药系统进行了测试,试验测得在速度0.2 m/s时,喷药除草对靶率达90%。

In order to reduce herbicide dosage and automatic precise weeding in cotton fields,a variable target weed spraying system uses fuzzy control algorithm with processor core of S3C2410 was designed.This system achieved automatic weeds identification,system speed and flow information collection,flow and pressure adjustment and other functions.A dual-input single-output fuzzy controller was designed and simulated.Simulation results showed that the controller could control the amount of spraying with the speed and density in real-time changed.An indoor test bed which could simulate cotton environment was built and the spraying system was tested.The results showed that over 90% weeds were sprayed with speed of 0.2 m/s.