针对危害动物导致农作物减产和农产品价值严重损失的严峻现实,设计一种在农田环境中探测无线传感器网络节点,对农田环境中危害动物进行探测,节点采用超低功耗的MSP430F149单片机和具有多种工作模式的无线射频模块nRF905,选用热释电红外传感器.探测节点通过无线通信的方式将热释电红外传感器探测的危害动物的信息上报到总控制器,并通过声防系统实现对多种农作物危害动物的智能化声防.测试结果表明:该节点具有良好的探测危害动物和无线通信的功能.%As agriculture predators can cause substantial damage to agricultural crops, a kind of wireless sensor networks node is designed to detect the agriculture predators on farmland. The low-power consumption microprocessor MSP430F149 and the wireless communication module nRF905 are adopted by PIR sensor. The detection node reports the information to the central controller through wireless communication ,and then uses the intelligent bio-acoustic frightening system to accomplish intelligent repelling against different agricultural predators. The test result shows that the node has good function of detecting the agriculture predators and wireless communication.
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