基于无线传感器网络的土壤墒情监测系统

目前农田监测智能化水平低，管理实时性差，远距离信息传输能力弱、可扩展性不强，且市场上普遍的土壤墒情机一般基于有线连接方式，对于农田监测有一定的局限性，价格昂贵，不适合一般农田的智能化管理。设计了一种土壤监测无线传感网络节点及其远程传输装置，该系统通过PICl8F4520单片机将ARN-100土壤水分传感器、ARN—Tw土壤温度传感器及H311-AS002-T土壤酸碱度传感器采集到的土壤参数处理后，通过ZigBee近距离无线通讯网络以及3G远程无线网络，将数据实时传输给监测终端。测试结果验证了该系统的合理性与实用性，符合现代农业发展方向。

Design of Farm Detection System based on Wireless Sensor Networks

Because the supervision, the long- distance transmission and the expandability are bad and the common soil moisture machine generally works on wire connection, which is limited and expensive,the level of intelligence t＇arm detection is low. In this paper, a system of farm detection using wireless sensor networks and remote transmission is presented, which processes data from ARN - 100 soil moisture sensor, ARN -TW soil temperature sensor and H311 -AS002 -T soil ph sensor by microprocessor PICISF4520, then transforms data to the detection terminal continuously by short- distance wireless communication networks of ZigBee and long- distance wireless 3G networks. The test resuh shows that the system is reasonable, applicable and suitable for the development of current agriculture.