基于ZigBee和ARM9的农田墒情远程监测系统

Remote Monitoring System for Soil Moisture Based on ZigBee and ARM9

针对农田信息采集的需要,设计了一套基于ZigBee网络与GPRS网络相结合的远程监测系统。农田信息数据的采集利用CC2430无线射频芯片完成,可采集土壤温度、作物叶片温度、土壤含水量和光照强度。系统控制终端基于ARM9和嵌入式Linux操作系统进行设计,用于农田信息的接收、实时显示和存储,通过GPRS方式实现与远程管理中心的通信。实验结果表明,数据采样间隔设定为40 min,选用2组WSN节点,监测得到第一组节点土壤温度、叶片温度、土壤水分和光照强度分别为24.7、25、0.75、18,第二组节点得到参数值分别为25.3、25、0.85、18。系统在线自动监测农田墒情,结构简单、节点灵活、功耗低,实现了在无线环境下对农田墒情的有效监测,为农田灌溉的实施提供了有力依据。

For meeting the needs of information collection of agriculture,a remote monitoring system was developed based on the combination of ZigBee network and the GPRS network.Data collection of field information was completed by using CC2430 radio frequency chip,which could collect soil temperature,crop leaf temperature,soil moisture and light intensity.System control terminal was designed based on ARM9 and embedded Linux operating system,which is used to receive,real-time display and storage the information of field and to communicate with the remote management center by GPRS.The test results showed that when the data sampling interval was set for 40 min,2 groups WSN nodes were chosen,the system could get the information of soil temperature,leaf temperature,soil water content and light intensity.Those of node 1 are 24.7,25,0.75 and 18,and those of node 2 are 25.3,25,0.85 and 18,respectively.System could automatically monitor soil moisture information,simple structure,flexible nodes and low power consumption.It realized the effective monitoring of field information in the wireless environment,and provided a strong basis for the implementation of farmland irrigation.