适用于大地震临震预测的地声传感单元  

Geo-sound Sensor Unit for Imminent Violent Earthquake Prediction

作　　者：曾敬武 雍珊珊[1] 郑文先 韩朝相 林科[1] 张国新 王新安[1] 

机构地区：[1]北京大学深圳研究生院,广东深圳518055 [2]深圳市微纳集成电路与系统应用研究院,广东深圳518055

出　　处：《计算机技术与发展》2015年第12期133-137,共5页Computer Technology and Development

基　　金：深圳市战略新兴产业发展专项资金项目(JCYJ20130329113052637)

摘　　要：震前地声是一种重要的地震前兆信息,对其进行有效的监测有助于对地震孕育机制研究和地震预报工作。一种适用于大地震临震监测的地声监测系统,通过深井放置在基岩附近绕过地表的滤波,直接监测来自地下的地震前兆地声信息。文中对该系统中的地声传感单元的传感器特性及其接口电路的设计进行了介绍。传感器组包括三种传感器—压电薄膜传感器、MEMS麦克风和压电陶瓷传感器,分别用以监测震前地声信号中的次声波信号、可听波信号以及超声波信号;传感接口电路用于将传感器采集到的信号处理后由串行通信控制模块上传。Geo-sound is a kind of very important precursor signal before earthquake. To make an effective monitoring on geo-sound pre- cursory is of certain significance for earthquake mechanism and imminent earthquake prediction. A geo-sound precursory monitoring sys- tem for violent earthquake is proposed. It is placed near the bedrock through a deep hole which can eliminate human disturbance from sur- face and difference of soil structure in different regions. In this paper,the geo-sound sensors chosen and their interface circuits are intro- duced in detail. There are piezoelectric film sensor, MEMS microphones and piezoelectric sensors to sense infrasonic wave, sonic wave and ultrasonic. The interface circuits implement the function of transfer sensor signal to other terminal through serial communication protocol.

关 键 词：临震预测 震前地声 传感系统 压电陶瓷 压电薄膜 MEMS麦克风 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]