GMM-FBG光纤电流传感器温度补偿研究  

Study on temperature compensation of GMM-FBG fiber optic current sensor

作　　者：韩笑笑 荆雅洁 杨濠琨 张锦龙[1] HAN Xiao-xiao;JING Ya-jie;YANG Hao-kun;ZHANG Jin-long(School of physics and electronics,Henan university,Kaifeng,henan 475001,China)

机构地区：[1]河南大学物理与电子学院,河南开封475001

出　　处：《光电子．激光》2020年第8期787-793,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金面上项目(61675063,61975052);河南大学一流学科培育项目(2018YLTD06,2019YLZDCG02)资助项目。

摘　　要：为解决因超磁致伸缩材料(GMM)磁致伸缩系数对温度敏感而影响GMM-FBG光纤电流传感器响应准确度的问题,研究了温度补偿的方法,构建了GMM磁场与温度的多场耦合模型,进行温度传感实验、电流的通断实验、及不同磁场方向上的电流响应实验,设计了十字形传感探头,利用垂直磁场方向的GMM的磁场不敏感性进行电流传感器的温度补偿,提高了GMM-FBG光纤电流传感器响应准确度。结果表明:垂直于磁场方向上的传感器中心波长值变化量为±0.05 pm,可忽略磁场的影响,温补后的拟合曲线与通断实验的拟合曲线残差平方和为0.0112,几乎完全重合,可消除温度对GMM-FBG电流传感器的影响,使电流测量更加精确,并实现电流与温度的同时测量,可满足当代电力系统的应用需求。To solve the problem because of the giant magnetostrictive material(GMM)magnetostrictive coefficient is sensitive to temperature and affect the accuracy of GMM-FBG optical fiber current sensor response problem,to study the temperature compensation method,constructed the GMM magnetic field and temperature field coupling model,the temperature sensing experiment,the current on and off,and the different magnetic field direction on the current response of the experiment,design the cross sensing probe,using GMM magnetic field is not sensitive to the direction of the vertical magnetic field current sensor temperature compensation,and improve the accuracy of the GMM-FBG optical fiber current sensor response.The results show that the center wavelength in direction perpendicular to the magnetic field sensor value variation of plus or minus 0.05 PM,but ignore the influence of magnetic field,after removing the fitting curve and on-off experiment fitting curve is the sum of squared residuals is 0.0112,almost completely overlap,can eliminate the influence of temperature on the GMM-FBG current sensor,make current measurement more accurate,and realize the electric current and temperature measurements at the same time,can meet the application requirements of modern electric power system.

关 键 词：超磁致伸缩材料(GMM) 光纤光栅 光学电流传感器 温度补偿 

分 类 号：TN253[电子电信—物理电子学]