高尚华,,
薛兵
中国地震局地震预测重点实验室(中国地震局地震预测研究所), 北京 100036
基金项目: 国家自然科学基金（41404142），中国地震局地震预测研究所基本科研业务费专项（2018IEF0203，2014IES0201，2015IES0406），中国大陆综合地球物理场观测仪器研发专项（Y201804），中国地震局地震监测预报经常性项目（16A46ZX262）联合资助
详细信息
作者简介: 李际弘, 男, 硕士生, 主要从事石英水平摆倾斜仪研究.E-mail:wlwdmt@126.com
通讯作者: 高尚华, 女, 副研究员, 主要从事地震观测技术与数据分析研究.E-mail:gao966@cea-ies.ac.cn
中图分类号: P315收稿日期:2017-05-11
修回日期:2017-09-28
上线日期:2018-11-05
Research of applying force balance feedback technique to the quartz horizontal-pendulum tiltmeter
LI JiHong,GAO ShangHua,,
XUE Bing
Key Laboratory of Earthquake Prediction, Institute of Earthquake Forecasting, CEA, Beijing 100036, China
More Information
Corresponding author: GAO ShangHua,E-mail:gao966@cea-ies.ac.cn
MSC: P315--> Received Date: 11 May 2017
Revised Date: 28 September 2017
Available Online: 05 November 2018
摘要
摘要:石英水平摆倾斜仪在前兆地震观测中得到了广泛的应用，取得了较好的观测数据，但是仍然存在一些不足，如灵敏度未知、频率特性不理想等.为解决这些问题，本文提出一种基于力平衡反馈技术的石英水平摆倾斜仪设计方法.该方法通过差动式电容换能器检测摆锤的位置信息，将其转换成电信号输出；同时通过电子线路将输出电压信号处理后反馈给摆锤，该反馈电压在摆锤上产生一静电力.根据该设计方法，我们研制了原理样机并进行了测试，结果表明，样机的灵敏度为16801V/（m·s-2），样机的幅度响应在从DC到5s都是平坦的.
关键词: 倾斜仪/
力平衡反馈/
差动式电容换能器/
灵敏度
Abstract:Quartz horizontal-pendulum tiltmeter has been widely used in earthquake precursory observation, and has got a lot of good observation data. However, it still has some limitations such as that the sensitivity is unknown before on-site installation, the frequency characteristic is not ideal and so on. To conquer these problems, we propose a method of designing quartz horizontal-pendulum tiltmeter based on force balance feedback technique. This method utilizes differential capacitance transducer to detect the pendulum's position and converts it into electric signal for output. It also sends the output signal back to the pendulum via feedback electric circuit. This feedback voltage will produce a force on the pendulum. On basis of the proposed method, we have developed a prototype and tested its performance. The results show that the sensitivity of the prototype is 16801 V/(m·s-2), and the amplitude response is flat within the frequency range of DC to 5 s.
Key words:Tiltmeter/
Force balance feedback/
Differential capacitance transducer/
Sensitivity
PDF全文下载地址:
http://www.geophy.cn/data/article/export-pdf?id=dqwlxb_14756
