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薄壁圆环分布式光纤测力传感器的性能

Performances of Distributed Fiber Optic Strain Sensor with Thin-Walled Ring

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摘要

提出了一种基于分布式光纤应变感测的测力方法,开展了基于布拉格光纤光栅技术(FBG)和布里渊散射光时域分析技术(BOTDA)的薄壁圆环加载实验,详细阐述了分布式光纤传感器的原理、数据拟合及误差分析等问题。为了更进一步验证所提方法的可行性,实验中对FBG和BOTDA所获结果进行了对比分析。实验结果表明,通过BOTDA数据计算的作用力更加接近于实际测量值,证明了分布式光纤监测技术满足土工实验数据采集的精确性要求。

Abstract

This study develops a force-measurement method based on distributed optical fiber strain sensing. A thin-walled ring loading test with the fiber Bragg grating (FBG) and Brillouin optical time domain analysis (BOTDA) techniques is performed. The principles of fiber optic sensing, data fitting, and error analysis are also introduced in detail. The results obtained by FBG and BOTDA are compared and analyzed in the experiment to further verify the feasibility of proposed method. The experimental results show that the load value calculated by the BOTDA data is closer to the actual one. Furthermore, the distributed fiber optical monitoring technology has been proven to meet the accuracy requirements of data acquisition in geotechnical tests.

Newport宣传-MKS新实验室计划
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中图分类号:P642

DOI:10.3788/lop56.100602

所属栏目:光纤光学与光通信

基金项目:国家重点研发计划(2018YFC1505104)、国家自然科学基金(41722209,41672277)、苏州市科技计划项目(SYG201612)

收稿日期:2018-12-03

修改稿日期:2018-12-11

网络出版日期:2018-12-20

作者单位    点击查看

王德洋:南京大学地球科学与工程学院, 江苏 南京 210023
朱鸿鹄:南京大学地球科学与工程学院, 江苏 南京 210023南京大学(苏州)高新技术研究院, 江苏 苏州 215123
朱泳:南京大学地球科学与工程学院, 江苏 南京 210023
施斌:南京大学地球科学与工程学院, 江苏 南京 210023
齐贺:中建科技有限公司深圳分公司, 广东 深圳 518000

联系人作者:朱鸿鹄(zhh@nju.edu.cn)

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引用该论文

Wang Deyang,Zhu Honghu,Zhu Yong,Shi Bin,Qi He. Performances of Distributed Fiber Optic Strain Sensor with Thin-Walled Ring[J]. Laser & Optoelectronics Progress, 2019, 56(10): 100602

王德洋,朱鸿鹄,朱泳,施斌,齐贺. 薄壁圆环分布式光纤测力传感器的性能[J]. 激光与光电子学进展, 2019, 56(10): 100602

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