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 micro-processor 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.