摘要
为提高农药利用率,设计一套具有手动控制、自动控制和试验标定3种工作模式的变量喷药控制系统。该系统以ARM7系列的S3C44B0X微处理器为核心,在UCOS-Ⅱ操作系统环境下,使用C语言编程实现机具作业位置、行进速度、喷头入口压力以及喷头喷药量信息的采集与处理、网格识别和电动调节阀控制。喷头喷药量控制误差田间试验结果表明:喷药机以4.2km/h(Ⅱ档中油门)速度工作,喷药处方量在465～600kg/hm2范围内变化时,采用本系统完成变量喷药作业,系统喷头喷药量最大控制误差≤5%,满足变量喷药作业要求。
In order to improve pesticide efficiency,a variable spraying control system was designed with three working modes：a manual control,an automatic control and a calibration mode.The variable spraying control system took the S3C44B0X microprocessor of ARM7 series as its core control part and programmed with C language in the UCOS-Ⅱ environment.The system was able to fulfill the data acquisition and processing of the position and the speed about the sprayer,the pressure and the flow about nozzles,and recognize the plot and then adjust the electrical control valve to realize variable spraying.The test results in the field showed that the error of the variable spraying was less than 5% when the spray dosage was 465-600 kg/hm^2 at speed of 4.2 km/h,the system can meet the requirements of variable spraying.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第4期113-118,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家"863"高技术研究发展计划资助项目(2006AA10A309)
"十一五"国家科技支撑计划资助项目(2006BAD11A08)
关键词
喷药
微处理器芯片
控制系统
精确农业
ARM
spraying
microprocessor chips
control systems
precision agriculture
advanced RISC machines（ARM）
