光通信技术2024，Vol.48Issue(4)：36-41,6.DOI:10.13921/j.cnki.issn1002-5561.2024.04.007
一种面向结构沉降的改进型FBG传感器
Improved FBG sensor for structural settlement
摘要
Abstract
In order to improve the sensitivity of fiber Bragg grating(FBG)type settlement sensors and reduce measurement devia-tions caused by tilt and temperature drift during the settlement process,an improved FBG sensor for structural settlement was de-signed.This sensor replaces the traditional cantilever structure with a straight pull structure to reduce measurement errors caused by settlement and tilt.By accurately calculating the ratio of wavelength offsets between two sets of FBGs,accurate measurement of settlement can be achieved.The test results show that the strain response of the sensor is 5.2 ×10-5 ε/N,and there is a linear re-lationship between wavelength shift and settlement within 0～50 mm.The average deviation is better than 0.69 mm,and the aver-age sensitivity is 107.45 pm/mm.The fluctuation of the test results is below 1.0％,which is significantly better than the traditional FBG sensor structure,verifying its better anti-interference ability.关键词
沉降检测/光纤布喇格光栅/差分比值计算/倾斜干扰/温漂干扰Key words
settlement detection/fiber Bragg grating/calculation of differential ratio/tilt interference/temperature drift interfer-ence分类
计算机与自动化引用本文复制引用
唐杰,邵国霞..一种面向结构沉降的改进型FBG传感器[J].光通信技术,2024,48(4):36-41,6.基金项目
河南省科技攻关计划项目(172102210390)资助. （172102210390）
