光学精密工程2026，Vol.34Issue(15)：2389-2397,9.DOI:10.37188/OPE.20263415.2389
高灵敏度双向测量光纤光栅位移传感器及其在隧道变形监测中的应用
High-sensitivity bidirectional measurement FBG displacement sensor and its application in tunnel deformation monitoring
摘要
Abstract
To accurately capture the amplitude and direction of dynamic structural displacement varia-tions,a high-sensitivity fiber Bragg grating(FBG)displacement sensor based on a boss-groove structure is proposed to enhance the strain response of a uniform-strength beam.The sensor provides bidirectional displacement sensing capability.Its measurement principle,structural design,temperature compensation method,and prototype performance evaluation were systematically investigated.Experimental results show that,over a measurement range of±60 mm,the sensor achieves a sensitivity of 63.446 pm/mm and a comprehensive measurement accuracy of 0.145 9 mm,while exhibiting favorable stability,repeat-ability,hysteresis performance,temperature adaptability,and creep resistance.Field application results further indicate that three deployed sensors operated stably and effectively captured structural deformation information for support segments in a subway tunnel in a certain city.The proposed sensor is therefore suitable for precise bidirectional displacement monitoring in civil and mechanical engineering applications.关键词
光纤光栅/位移传感器/增敏型等强度梁/双向测量/高灵敏度Key words
fiber Bragg grating(FBG)/displacement sensor/sensitized equal strength beam/bidirec-tional measurement/high-sensitivity分类
信息技术与安全科学引用本文复制引用
周泽林,郑勇,姜兴良,吴澎,梁俊松..高灵敏度双向测量光纤光栅位移传感器及其在隧道变形监测中的应用[J].光学精密工程,2026,34(15):2389-2397,9.基金项目
2024年中国中冶重大研发资助项目(No.ZGZY-ZDYF-SJY-2024-01) （No.ZGZY-ZDYF-SJY-2024-01）
国家重点研发计划资助项目(No.2023YFB2604700) （No.2023YFB2604700）
