自旋量程可调式金属化FBG温度传感器设计  

Design of spin range adjustable metallized FBG temperature sensor

作　　者：朱星盈 倪屹[1] 郭瑜 刘化利 李岱林 ZHU Xing-ying;NI Yi;GUO Yu;LIU Hua-li;LI Dai-lin(School of Internet of Things Engineering,Jiangnan University,Wuxi 214000,China;Wuxi Beetech Limited Company,Wuxi 214000,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214000 [2]无锡必创传感科技有限公司,江苏无锡214000

出　　处：《传感器与微系统》2018年第11期77-79,共3页Transducer and Microsystem Technologies

基　　金：江苏省六大人才高峰计划项目(DZXX-023);江苏省自然科学基金青年科学基金资助项目(BK20160190);国家自然科学基金青年科学基金资助项目(61701195);中央高校基础科研经费项目(JUSRP11740)

摘　　要：针对大型结构温度场监测、粮库测温、石油化工及管道等需要对不同范围温度进行精确测量的问题,设计了一种新型自旋量程可调式光纤布拉格光栅(FBG)温度传感器。采用金属化FBG焊接在新型封装基片上的封装方式,使得传感器具有耐高温的特性。经过有限元分析,在温度变化100℃时,封装基片应变约为0.073×10-6,远小于光纤结构本身的微应变,解决了温度与应力的交叉影响的问题。同时通过耐高温真空自旋式装置达到调节量程的目的,在温控箱内对传感器进行实验测试,最小量程精度约为20 pm/℃,对结果进行修正之后线性度可以达到0.999 9以上,满量程精度达到0.05%。Aiming at the problem that large structural temperature field monitoring,grain depots,petrochemical,pipelines and the need for precise measurement of different temperature range,a new spin range adjustable fiber Bragg grating（FBG） temperature sensor is designed.The encapsulation of metallized FBG welding on new type of packaging substrate enables the sensor to have characteristics of high temperature resistance. Through the finite element analysis,changes in temperature at 100 ℃,package substrate strain is about 0.073×10-6 which is far less than micro strain of the fiber structure itself,solve the cross influence problems of temperature and stress. At the same time,through high temperature resistant vacuum spin type device to adjust the range,in temperature control box,the sensor is tested experimentally. The minimum range precision is about 20 pm/℃. After the result is corrected,the linearity can reach above 0.999 9,and the full scale precision reaches 0.05 %.

关 键 词：光纤布拉格光栅 自旋可变式调档 光纤金属化 温度传感器 结构有限元分析 

分 类 号：TN29[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]