光学仪器, 2017, 39 (1): 26, 网络出版: 2017-04-10   

基于桥梁结构的FBG传感器温度与应变交叉敏感问题的研究

Sensitivity to temperature and strain of bridge structure of FBG sensor
作者单位
1 长春理工大学 光电工程学院, 吉林 长春 130022
2 中国科学院 长春光学精密机械与物理研究所, 吉林 长春 130033
摘要
对光纤布拉格光栅(FBG)传感器在桥梁结构健康监测中产生的温度与应变交叉敏感问题进行了研究。采用参考光纤光栅法在应变传感光纤光栅附近额外加入一个温度测量光纤光栅,对应变光栅实现温度补偿功能。设计了基于参考光纤光栅法的FBG传感器及FBG传感器封装的机械结构,并通过实验来验证FBG传感器的性能。实验数据表明,温度传感光纤光栅几乎不受应变的影响,应变传感光栅的中心波长变化与温度变化呈一阶线性关系,修正后的测量结果更加精确,达到了双参数同时测量的目的,应变与布拉格波长的线性关系非常好,相关系数达到0.99以上。参考光纤光栅法能够很好地解决FBG传感器温度与应变交叉敏感的问题。
Abstract
Monitoring of temperature and strain for bridge structuture optical fiber Bragg grating(FBG) sensor was researched.The method of reference fiber Bragg grating was used.An additional temperature measurement fiber Bragg grating was added near a strain sensing fiber Bragg grating.As a result, it was not affected by stress.The strain grating is to realize temperature compensation function.The FBG sensor based on the method of reference fiber Bragg grating and the mechanical structure of the encapsulated FBG sensor was designed.The performance of FBG sensors is verified in the test.Test data show that the optical fiber grating temperature sensor is hardly affected by strain.Grating strain sensor is affected by temperature at the center of the wavelength with a first-order linear variation.The accurate measurement results were achieved.Two parameters are measured at the same time.The linear relationship of strain with the Bragg wavelength is very good.The correlation coefficient is above 0.99.The reference fiber Bragg grating method can solve the problem of FBG sensor which is sensitive to temperature and strain cross.

刘凤超, 冯进良, 王洋, 韩玖会, 陈可, 吴震. 基于桥梁结构的FBG传感器温度与应变交叉敏感问题的研究[J]. 光学仪器, 2017, 39(1): 26. LIU Fengchao, FENG Jinliang, WANG Yang, HAN Jiuhui, CHEN Ke, WU Zhen. Sensitivity to temperature and strain of bridge structure of FBG sensor[J]. Optical Instruments, 2017, 39(1): 26.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!