力平衡加速度传感器的恒温控制系统  

Constant temperature control system of force balance acceleration sensor

作　　者：詹小艳[1] 章东 薛莹莹[1] 徐顺强[2] 朱升初[1] ZHAN Xiaoyan;ZHANG Dong;XUE Yingying;XU Shunqiang;ZHU Shengchu(Jiangsu Earthquake Agency,Nanjing 210014,China;The Geophysical Exploration Center,China Earthquake Adminstration,Zhengzhou 450002,China)

机构地区：[1]江苏省地震局,中国南京210014 [2]中国地震局地球物理勘探中心,中国郑州450002

出　　处：《地震地磁观测与研究》2021年第6期153-158,共6页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局三结合提升性课题(项目编号:3JH-202002010)。

摘　　要：在强震动观测中,力平衡加速度传感器通常会因环境温度的变化出现靠摆或零漂等机械性故障。针对这一普遍现象,设计了1种适用于力平衡加速度传感器的恒温控制系统。以ES-T力平衡式三分量加速度传感器为例,对恒温控制系统的关键技术进行研究,并通过实验室测试和试运行对恒温控制系统的有效性进行检验。测试结果表明,置于恒温控制系统内的加速度传感器,在-5℃—+40℃的环境下,各分向的电压灵敏度虽然总体上呈现随温度升高而增大的特征,但变化幅度较小,幅度范围约为1.7%—3.2%;当外部环境为15℃—25℃时,灵敏度变化相对稳定。地脉动对比观测结果表明,恒温控制系统对ES-T传感器的影响,在有效频带范围内几乎可以忽略。In strong motion observation, the force balance acceleration sensor usually has mechanical faults such as swing or zero drift due to the change of ambient temperature. Aiming at this common phenomenon, a constant temperature control system suitable for force balance acceleration sensor is designed. Taking the ES-T 3-direction force balance sensor as an example, the key technologies of the thermostatic control system are studied, and the effectiveness of the thermostatic control system is tested through laboratory tests and trial operations. The test results show that when the environmental temperature is-5 ℃-+40 ℃, the voltage sensitivity of each direction of the acceleration sensor placed in the constant temperature control system increases with the increase of temperature, but the change range is small, about 1.7%-3.2%;When the environmental temperature is 15 ℃-25 ℃, the sensitivity change is relatively stable. The comparative observation results of ground pulsation show that the infuence of the constant temperature control system on the ES-T sensor can be almost ignored in the effective frequency band.

关 键 词：加速度传感器 温度补偿 恒温控制 热结构 灵敏度 

分 类 号：P315.62[天文地球—地震学]