湖北农业科学
湖北農業科學
호북농업과학
2014年
10期
2421-2423
,共3页
肖乾虎%翁绍捷%贺芳%夏泽豪%张文清
肖乾虎%翁紹捷%賀芳%夏澤豪%張文清
초건호%옹소첩%하방%하택호%장문청
RS485串口%ZigBee无线网络%监测%作物生长%环境因子
RS485串口%ZigBee無線網絡%鑑測%作物生長%環境因子
RS485천구%ZigBee무선망락%감측%작물생장%배경인자
RS485 serial port%ZigBee wireless network%monitor%crop growth%environment factor
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1691.99 m。晴天的通信距离是1680 m，误差为7.09%；由于ZigBee无线网络受雨天的影响，通信距离是1520 m，误差为10.16%。
採用RS485串口，設計瞭轉換電路，實現瞭採集數據由模擬信號轉換為標準Modbus RTU格式的數字信號；採用ZigBee無線網絡實現瞭數據的上傳；對ZigBee無線網絡的通信距離進行瞭理論估算和生產基地測試，估算值為1691.99 m。晴天的通信距離是1680 m，誤差為7.09%；由于ZigBee無線網絡受雨天的影響，通信距離是1520 m，誤差為10.16%。
채용RS485천구，설계료전환전로，실현료채집수거유모의신호전환위표준Modbus RTU격식적수자신호；채용ZigBee무선망락실현료수거적상전；대ZigBee무선망락적통신거리진행료이론고산화생산기지측시，고산치위1691.99 m。청천적통신거리시1680 m，오차위7.09%；유우ZigBee무선망락수우천적영향，통신거리시1520 m，오차위10.16%。
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.
