基于ARM和DSP的农田信息实时采集终端设计

Design and Implementation of Terminal for Agricultural Data Real-time Acquisition Based on ARM and DSP

提出了一种基于ARM和DSP的农田信息实时采集终端设计方案,主处理器选用S3C2440,协处理器选用TMS320C6713,在设计的农田信息采集电路基础上设计了HPI驱动程序。利用Multisim对模拟信号采集电路进行放大倍数可调的仿真验证。并将采集到的农田经纬度、图像、土壤温度、土壤含水率、光照强度等信息进行编码。试验表明,该系统能够实时可靠地采集和上传多个传感器信息。延时试验表明,在GPRS网络延时比较严重的时间段容易出现图像显示不完全的现象。

Based on ARM and DSP,an real-time agricultural information sampling terminal was designed.S3C2440 and TMS320C6713 was used as the main processor and the assistant processor,repectively.The principle of HPI interface was expounded.The HPI device driver and the collection of electric circuits for the farmland information were designed.By using Multisim,the emulation verification which could be amplified were made to the electric circuits.The collected latitude and the longitude of the farmland,image information,soil temperature,moisture,strength of illumination and other information were encoded.The experiment on the farm showed that various sensor information could be collected and uploaded reliably by this system.The time-lapse experiment showed that images were usually demonstrated incompletely when GPRS net delayed too much.