结合Adam拟合算法的WRFG-BOTDR应变检测系统  

WRFG-BOTDR Strain Detection System Combined with Adam Fitting Algorithm

作　　者：王鑫睿 衣文索[1] 陈刚[1] 韩冬子 WANG Xinrui;YI Wensuo;CHEN Gang;HAN Dongzi(School of Opto-Electronic Engineering,Changchun University of Technology,Changchun 130022)

机构地区：[1]长春理工大学光电工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2023年第4期75-82,共8页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金(61805022)。

摘　　要：提出了一种基于WRFG的BOTDR应变检测系统,首次结合了Adam曲线拟合算法,进行应变远程监测和关键部位应变精确拟合测量。将BOTDR和弱反射光纤光栅阵列传感部件集成到一个系统中。实现了长距离分布式应变检测、传感光纤的应变分布测量和点对点的精确应变检测。系统沿10 km的距离,BOTDR部分的空间分辨率精度良好,并且应变发生源点的布里渊频移测量误差仅为0.1%。A WRFG based on BOTDR strain detection system was proposed,the remote strain monitoring and accurate strain fitting measurement at key sites were carried out after first time combining with Adam curve fitting algorithm.The BOTDR and weakly reflective fiber grating array sensing components were integrated into one system.Long-distance distributed strain detection,strain distribution measurement by sensing fiber and point-to-point accurate strain detection were achieved.For the system along a distance of 10 km,the spatial resolution accuracy of the BOTDR part was good,and the measurement error of Brillouin frequency shift of strain source point is only 0.1%.

关 键 词：弱光栅反射阵列 布里渊散射 应变检测 曲线拟合 

分 类 号：TH741[机械工程—光学工程]