Abstract: The key point of landslide monitoring is monitoring the change of landslide's incline.According to such requirements as high measurement precision,high reliability,high degree of automation,high portability and low power consumption of the existing landslide monitoring system，a wireless landslide monitoring system based on SCA100T and CC2530 is proposed.The system chooses STM32 as the core MCU;GSM network is realized by using SIM900 module access;based on the 9V dry battery 12 V 40 Ah battery and small solar power systems to complete system for power supply;divided three classes:acquisition node,base station and receiving host.Acquisition node use SCA100T to get the angle information and acquisition node and base station constitute a wireless network based on ZigBee protocol.Base station send the information to the receiving host by GSM network.The system upload data actively or timing,using SMS or timer trigger to Drive the sensor and star GSM module to realize the automatic remote transmission.The system's angle precision reaches to 0.035°.

Key words: Landslide, SCA100T, ZigBee, STM32, Wireless monitoring system