LI Guanglei, WANG Junbo, CHEN Lianhong, et al. Electrochemical seismic sensor based on force-balanced negative feedback[J]. 2019, (7): 89-91. DOI: 10.13873/j.1000-9787(2019)07-0089-03.
基于力平衡负反馈的电化学地震检波器
摘要
提出了一种基于力平衡负反馈系统的电化学微震检波器。通过力平衡负反馈系统与频率补偿电路相结合
使电化学微震检波器的工作带宽从7~20 Hz拓展至0. 1~50 Hz
灵敏度为3 227 V/m/s
为相同频率下动圈式地震检波器的161. 4倍
为资源勘探、桥梁、大坝以及其他建筑物的震动信号监测应用提供了技术基础。
Abstract
An electrochemical seismic sensor based on force-balanced negative feedback is presented. The working bandwidth of the proposed device is extended from 7 ~ 20 Hz to 0. 1 ~ 50 Hz
combined force-balanced negative feedback system with frequency compensation circuit. The quantified sensitivity of 3 227 V/(m/s)
which is 161. 4 times greater than the commercial moving-coil seismic sensor at the same frequency. The proposed electrochemical seismic sensor provides a technical basis for the field of resource exploration and vibration signals detection of the bridges