JLU-FG03A型井下磁通门磁力仪性能标定方法  

Performance Calibration Method of JLU-FG03A Downhole Fluxgate Magnetometer

作　　者：石佳晴 李子昊 周志坚[1] 王言章[1] 齐侃侃 SHI Jiaqing;LI Zihao;ZHOU Zhijian;WANG Yanzhang;QI Kankan(College of Instrumentation and Electrical Engineering,Jilin University,Changchun 130026,China;Yichang Testing Technology Research Institute,710 Institute,China Shipbuilding Industry Corporation,Yichang 443003,China)

机构地区：[1]吉林大学仪器科学与电气工程学院,长春130026 [2]中国船舶重工集团有限公司第七一〇研究所宜昌测试技术研究所,湖北宜昌443003

出　　处：《吉林大学学报（信息科学版）》2023年第1期1-7,共7页Journal of Jilin University（Information Science Edition）

基　　金：国家重点研发计划基金资助项目(2018YFC1503803)。

摘　　要：针对JLU-FG03A型井下磁通门磁力仪在井下高压潮湿环境下地磁场观测的应用需求,为磁力仪设计了实验室标定以及井下在线标定方法。给出了实验测试系统的搭建和相关的测试方法,利用实验室标定方法分别测试了磁力仪量程、带宽、噪声以及灵敏度温漂,使用井下在线标定方法测试了在井中工作的磁力仪数据的可靠性以及噪声水平。实验室标定结果表明,仪器量程为±100000 nT,带宽为DC-10 Hz,RMS(Root Mean Square)噪声低于0.01 nT(DC-0.3 Hz),开启自适应反馈功能后温漂为23.39 ppm,以上指标满足井下地磁观测的应用需求。井下在线标定实验表明,仪器在井下工作状态正常。噪声测量结果表明,井下磁环境良好,有利于磁力仪发挥出最佳性能。A laboratory calibration and a downhole online calibration method for the JLU-FG03A downhole fluxgate magnetometer are designed for the application needs of geomagnetic field observation under high pressure and humid environment,and the construction of the experimental test system and the related test methods are presented.The laboratory calibration method tests the range,bandwidth,noise and sensitivity of temperature drift of the magnetometer,while the downhole online calibration method tests the reliability of the magnetometer data and noise levels when working in the well.Laboratory calibration results show that the instrument has a range of±100000 nT,a bandwidth of DC-10 Hz,RMS(Root Mean Square)noise less than 0.01 nT(DC-0.3 Hz)and a temperature drift of 23.39 ppm when the adaptive feedback function is on,which meets the application requirements for downhole geomagnetic observation.The downhole online calibration experiments show that the instrument is in normal working condition downhole and the noise measurement results indicate a good downhole magnetic environment,which is conducive to the best performance of the magnetometer.

关 键 词：井下 磁通门磁力仪 实验室标定 在线标定 

分 类 号：TM937[电气工程—电力电子与电力传动]