偏振干涉型光纤阵列温度传感技术的研究  

Temperature Sensing Technology of Polarization Interferometric Fiber Array

作　　者：袁航 刘传清(指导)[2] 韦朴[2] 魏峘[2] 潘海瑞 戚珍鑫 YUAN Hang;LIU Chuan-qing;WEI Pu;WEI Huan;PAN Hai-rui;QI Zhen-xin(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211100,China;Institute of Information and Communication,Nanjing Institute of Technology,Nanjing 211100,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211100 [2]南京工程学院信息与通信工程学院,江苏南京211100

出　　处：《光学与光电技术》2022年第6期109-116,共8页Optics & Optoelectronic Technology

基　　金：国家电网全球能源互联网研究院有限公司资助项目(3612406220314)

摘　　要：针对电力设备环境监测的现实需求,开展了光纤阵列温度传感技术的研究。提出了一种以保偏光纤作为传感单元的干涉型传感探头,建立传感系统的数学分析模型,构建干涉光路,分析传感探头长度、光源波长等参量对测温范围的影响。在此基础上,完成了基于毛细玻璃管的传感器封装设计并研制系统样机。最后,开展了温度测试实验和传感器重复性实验。实验结果表明,在光源波长相同的情况下,传感探头越短,其测温范围越大,并且当传感探头为1 cm时,其测温误差大约为0.37℃,精度约为0.3℃。对于光纤温度传感技术在电力等行业中的应用有参考价值。According to the actual needs of environmental monitoring about power equipment,the technology of the temperature sensing about fiber sensor array is carried out in this paper.An interferometric sensing probe with polarizationmaintaining fiber as the sensing unit is proposed.Firstly,a mathematical analysis model of the sensing system is established,and an interference optical path is constructed to explore the influence of the length of the optical fiber sensor probe and wavelength of light source on the temperature measurement range.Secondly,on the basis,the sensor package based on the capillary glass tube is completed and system prototype is built.Finally,the temperature test experiment and sensor repeatability experiment are carried out.The experimental results show that under the same light source with the same wavelength,the shorter the length of sensing probe,the greater the range of the temperature measurement has,and when the sensing probe is 1cm,the temperature measurement error is about 0.37℃,and the accuracy is about 0.3℃.This research has reference value for the application of optical fiber temperature sensing technology in power and other industries.

关 键 词：电力设备 温度传感 保偏光纤 偏振干涉 光纤阵列 

分 类 号：TM50[电气工程—电器] TP212[自动化与计算机技术—检测技术与自动化装置]