大地测量与地球动力学2018，Vol.38Issue(4)：437-440,4.DOI:10.14075/j.jgg.2018.04.021
一种RZB分量式钻孔应变仪原地线性标定技术及试验
In-Situ Linear Calibration Technique of the RZB-Type Borehole Strain Meter:Including a Laboratory Experiment
摘要
Abstract
Due to long working life,aging of components,creep of material,and other factors,it is necessary to carry out in-situ static physical calibration periodically to understand borehole strain meterperformance.At present,the static physical calibration method with piezoelectric ceramics has many disadvantages,including hysteresis,creep and linearity,so the accuracy of calibration is poor with large errors.To make the in-situ linear calibration of the RZB-type borehole strain meter,a linear calibration mechanism was designed.Based on a ceramic motor as the core,a grating sensor as the feedback and the RS485 bus,the mechanism can remotely realize the in-situ linear calibration to master instrument function.Some simulation experiments for in-situ linear calibration are performed in the laboratory,and the calibration data of the full-scale sensor show that:the calibration resolution is better than 2 μm and the linearity is better than 1％.关键词
钻孔应变仪/原地标定/陶瓷马达Key words
borehole strain meter/in-situ linear calibration/ceramic motor分类
天文与地球科学引用本文复制引用
吴立恒,熊玉珍,李涛,陈征..一种RZB分量式钻孔应变仪原地线性标定技术及试验[J].大地测量与地球动力学,2018,38(4):437-440,4.基金项目
中国大陆综合地球物理场观测仪器研发专项(Y201605) （Y201605）
北京市科委创新基地专项(Z161100005016068).Special Project for Geophysical Field Observational Instrument Development of China Mainland,No.Y201605 （Z161100005016068）
Special Fund of Beijing Municipal Science and Innovation Base,No.Z161100005016068. （）
