增敏微型FBG应变传感器设计  

Design of micro FBG strain sensor with enhanced sensitivity

作　　者：王永洪[1,2] 张明义[1,2] 张春巍[1] 王伟 刘倩 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛理工大学蓝色经济区工程建设与安全协同创新中心,山东青岛266033 [3]深圳市简测科技有限公司,广东深圳518061

出　　处：《传感器与微系统》2017年第12期78-79,83,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51778312);山东省自然科学基金青年科学基金资助项目(ZR2016EEP06)

摘　　要：提出了一种两端夹持套管封装的光纤Bragg光栅(FBG)应变传感器,其结构包括光纤光栅、夹持套管、尾纤3部分,夹持套管封装的传感器尺寸小,可以改变灵敏度系数,测量精度高,适用于应变较小、受尺寸限制的室内模型试验。测试结果表明:增敏微型FBG应变传感器灵敏度高、低噪、稳定可靠,在标距范围内线性关系良好,线性度均达到0.999以上,制作工艺简单,具有很高的实用价值。A micro fiber Bragg grating（ FBG） strain sensor with two holders in both sides of FBG which are packaged by tube is developed for strain measurement. The sensor structure consists of three parts： FBG,holder tube and tail fibre. The FBG sensors packaged by holder tube has the advantages of small size,variable sensitivity coefficient and high precision,which are applied in laboratory model test which has small strain and dimension restriction. Test results show that micro FBG strain sensor with enhanced sensitivity has the advantages of high sensitivity,low-noise,stable and reliable,it shows a good linear relationship in the range of standard distance,which is over 0. 999. Fabrication process is simple,and it has very high practical value.

关 键 词：光纤BRAGG光栅 应变传感器 增敏 可变灵敏度 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]