一种新型滑坡体无线远程监测系统设计

Design on a New Type of Landslide Wireless Remote Monitoring System

针对目前滑坡体监测仪器高测量精度、高可靠性、高自动化程度及低功耗的要求,设计了一套滑坡体全数字高精度自动远程监测系统。系统以STM32为核心,集成了SCA100T高精度双轴加速度传感器、MPS-S-400 mm-P位移传感器及SRY-1雨量计,采用SIM900模块实现GSM网络接入,基于12 V/40 AH蓄电池和小型太阳能发电系统完成系统持续供电。系统程序设计采用动态周期采集机制降低功耗,利用雨量阈值触发,驱动倾角传感器与位移传感器采集,并启动GSM实现远程数据传输。实验结果表明:系统能够实现滑坡体区域的雨量、表面位移和深部倾角参数自动化远程采集与传输;雨量采集精度为0.1 mm、地表位移采集精度为0.022 mm、深部倾角采集精度高达0.035°;该系统在无太阳能充电的环境下续航时间持续15 d,正常日照条件下持续工作时间大于90 d。

According to such requirements as high precision,high reliability,high degree of automation and low power consumption of the existing landslide monitoring system,a full-digital high precision wireless remote landslide monitoring system was designed. The system is based on STM32 as core and integrated with SCA100 T precision dual-axis accelerometer,MPS-S-400 mm-P displacement and rain gauge SRY-1; GSM network access is realized by using SIM900 module. The 12 V /40 AH battery and small solar power systems are adopted to realize power supply for the system. The dynamic cycle collection mechanism in system programming are adopted to lower the power consumption,and the rainfall threshold trigger,driving sensor and displacement sensor for acquisition combined with the GSM are used to realize remote data transmission. The experimental results show that the system can realize the automatic remote collection and transmission of landslide area rainfall,the surface displacement and deep dip angle parameter with rainfall collection precision 0. 1 mm,surface displacement collection precision0. 022 mm,and the deep dip angle collection precision up to 0. 035°. The continuous working time of the system lasts 15 days in the absence of solar rechargeable battery,and more than 90 days under normal sunshine.