基于RS485串口的作物生长环境因子监测无线网络的设计  

Designing Wireless Network for Monitoring Environmental Factor of Crop Growth Based on RS485

作　　者：肖乾虎[1] 翁绍捷[1] 贺芳[1] 夏泽豪 张文清[1] 

机构地区：[1]海南大学机电工程学院,海口570228

出　　处：《湖北农业科学》2014年第10期2421-2423,共3页Hubei Agricultural Sciences

基　　金：国家星火计划项目(S2011E200025);2013年海南省研究生创新课题项目(s22)

摘　　要：采用RS485串口,设计了转换电路,实现了采集数据由模拟信号转换为标准Modbus RTU格式的数字信号;采用ZigBee无线网络实现了数据的上传;对ZigBee无线网络的通信距离进行了理论估算和生产基地测试,估算值为1 691.99 m。晴天的通信距离是1 680 m,误差为7.09%;由于ZigBee无线网络受雨天的影响,通信距离是1 520 m,误差为10.16%。A circuit was designed to convent analog signal to Modbus RTU format digital signals with with RS485 serial port. Wireless network used ZigBee to transmit data. The communication distance of the ZigBee wireless network was studied theoretically and tested in production base. The estimated distance was 1 691.99 m. The tested distance was 1 680 m with 7.09% error in sunny day.Because of the influence of rain,the tested communication distance was 1 520 m with 10.16% error.

关 键 词：RS485串口 ZIGBEE无线网络 监测 作物生长 环境因子 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] TN92[自动化与计算机技术—控制科学与工程]