基于ZigBee网络的农田信息采集系统设计

Design of Farmland Environment Remote Monitoring System Based on ZigBee Network

设计了一套基于ZigBee协议的农田环境监测网络系统,系统由ARM+LINUX模块、ZigBee无线传感器网络和上位机信息管理系统3大模块构成。系统采用嵌入式技术实现下位机的数据采集,ZigBee通信协议实现节点数据汇总发送,VPN设置实现对系统的远程维护,断点续传技术确保数据接收的完整性。通过26个样点与实际现场测定值验证得知,大气温度精度为87.83%、大气湿度精度为85.22%、土壤温度精度为87.17%、土壤湿度精度为87.38%、太阳总辐射精度为88.23%、日降雨量精度为90.17%,总体精度为87.66%,总体误差为12.33%。结果表明,该系统数据传输正确、可靠,具有很好的实时性、准确性,有效解决了目前大田环境监测存在的设备布线复杂、成本较高、通讯范围较小等不足,提高了农业数据采集的精度以及获取的实时性。

This paper design a daejeon agricultural environment monitoring network based on the ZigBee protocol,effectively solve the daejeon environmental monitoring difficulties and shortcomings like equipment wiring complexity,high cost,and smaller range communications,improving the agricultural data collection precision and access to real-time.The system uses embedded technology to achieve lower machine data acquisition,ZigBee communication protocol to achieve node data aggregation and send,the VPN set to achieve the remote maintenance system,HTTP technology to ensure the integrity of the data received,the overall system constitute from three modules ：ARM ＋ LINUX modules,ZigBee wireless sensor network,the host computer information management system,ARM ＋ LINUX embedded modules for data acquisition,and then by the ZigBee wireless sensor network for data transmission,data released by the information management system.This paper we use the Anhui province Suzhou city Lingbi county as the study area.,to monitor the air temperature,air humidity,soil temperature,soil moisture,total solar radiation,wind speed,wind direction,daily rainfall,select 26 samples to compare with the measured value of the actual field,the air temperature accuracy is 83.67%,the air humidity accuracy is 87.11%,the soil temperature accuracy is 85.29%,the soil moisture accuracy is 81.09%,the total solar radiation accuracy is 88.17%,the daily rainfall accuracy is 81.87%,the overall error is 15.46%.The results show that the system＇s data transmission is correct,reliable,at the same time has a good real-time,accuracy,can be promotional applications.