关键词: WSN, ZigBee, GPRS, 山体滑坡

Abstract: In view of the difficulties in monitoring the current landslide, the high cost of equipment, low measurement accuracy and poor real-time performance, the application of WSN technology and MEMS devices in landslide monitoring system is put forward. Using low-cost MPU-9150（integrated three axis gyroscope, triaxial accelerometer and triaxial magnetometer） instead of traditional tilt sensor, it greatly reduces the volume of the sensor and facilitates the installation and construction on the basis of ensuring the accuracy; Meanwhile, ZigBee network is established with CC2530 controller, it integrates the data of each sensor node into the GPRS gateway. And finally the data is sent to the remote monitoring center. Computer system can analyze, process and store real-time sensor information, and it can show the information of air temperature and humidity of each node, rainfall, soil inclination angle, acceleration and other basic information of different depths. At the same time, the alarm threshold can be set for different parameters, the operation is simple and convenient. The application shows that the landslide monitoring system based on WSN and MEMS devices has the characteristics of easy expansion, wide coverage and long life cycle of nodes. It has strong practical value.

Key words: WSN, ZigBee, GPRS, landslide