摘要
我国是地质灾害多发的国家,地震、滑坡等地质灾害发生前会产生由地应力变化而引起的微小裂隙,从而引起微震;泥石流发生过程中会伴随着产生泥石流地声(振动)。为了能同时监测地质体形变所引起的微震信号和地灾触发因素降雨量,该文设计制作了一款压电加速度传感器,结合压电雨量传感器、4通道同步采样ADC芯片和STM32F4微控制器搭建了基于压电传感器的地质灾害监测系统,并详细介绍了软硬件结构。最后,通过室内测试,验证了制作的压电加速度传感器能很好的捕捉振动信号,监测系统能实时采集压电加速度传感器的输出。
China is a country that geological disasters frequently occur.Before the occurrence of geological disasters such as earthquakes and land slides,micro-cracks will be caused by the change of crustal stress,which will cause microearthquakes.Also,the occurrence of debris flow will be accompanied by geo-sound.In order to simultaneously monitor the microseismic signal and the rainfall,this paper designs a piezoelectric accelerometer,and then builds a geological disaster monitoring system combined with the piezoelectric rain sensor,4-channel synchronous sampling ADC chip and STM32 F4 microcontroller,and the hardware and software structures are introduced in detail.Finally,the indoor test verifies that the piezoelectric acceleration sensor can capture the vibration signal well,and the monitoring system can collect the output of the piezoelectric acceleration sensor in real time.
作者
张晓飞
王新杰
吕中虎
孟庆佳
ZHANG Xiao-fei;WANG Xin-jie;LV Zhong-hu;MENG Qing-jia(Center for Hydrogeology and Environmental Geology Survey,CGS,Baoding 071051,China;Technology Innovation Center for Geological Environment Monitoring,MNR,Baoding 071051,China)
出处
《自动化与仪表》
2022年第3期44-49,共6页
Automation & Instrumentation
基金
国家重点研发计划项目(2019YFC1509601)。
关键词
地质灾害
压电传感器
实时监测
geological disaster
piezoelectric sensor
real-time monitoring
