基于ARM7和GPS的农田作业面积测量系统开发

Development of operating field area measurement system based on ARM7 and GPS

为了实现实时测量农田作业面积的目的,该文基于ARM7和GPS开发了谷物联合收割机作业面积测量系统。优化了存贮器设计、COM口设计、GPS接口电路设计等系统硬件结构,并在C语言环境编写相应的驱动程序。试验结果表明,该系统能达到实时记录工作时间、工作地点、作业面积等信息的目的;同时,该装置不仅适合于规则图形的面积测量,并且对于不规则图形的面积测量也具有较高的精度,平均测量精度为95.2%,可为实时测量农田作业面积提供依据。

In order to achieve real-time measurement of operating area of farmland,the operating area measurement system of grain combine harvester was developed based on the ARM7 and the GPS.The hardware structures,including the memory,COM port and GPS access circuit were optimized.The corresponding driver was programmed with the C language.The experiment results showed that the real-time measuring system could record information including operating time,workplace,operating area and cost.At the same time,the system was not only suitable to measure areas with regular figures,but also had higher measurement accuracy for the irregular areas.The average measurement precision was 95.2%.The system provides the basis for measurement of the operating field area.