基于FBG液压传感器的桥梁挠度监测研究  

Research on Bridge Deflection Monitoring Based on FBG Liquid Pressure Sensors

作　　者：南秋明[1] 

机构地区：[1]武汉理工大学光纤传感技术研究中心,武汉430070

出　　处：《武汉理工大学学报》2009年第12期78-80,138,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(60537050)

摘　　要：基于光纤Bragg光栅(FBG)传感技术的优点,提出了FBG液压传感器配合连通管的挠度测试方法,设计了FBG液压传感器,并对传感器及其系统的性能进行了实(试)验研究。结果表明:系统结构简单,测量精度高,动态性能好。通过对传感器结构的进一步优化和测试仪表稳定性的提高,系统可以满足桥梁挠度长期监测的需要。In the paper a new method for bridge deflection measurement, a testing system, mainly made up of fiber Bragg gratings （FBG） liquid pressure sensors and communicating pipe is brought forward for the first time. The author has schemed out FBG liquid pressure sensor and done some experiments to test the properties of the sensor and its system. The results show that the system has simple structure, higher measurement precision and better dynamic property. With optimization of sensor＇s structure and improvement of testing instrument＇s stability, the system is capable of meeting the demand for long-term monitoring of bridge deflection.

关 键 词：挠度 长期在线监测 光纤Bragg光栅液压传感器 连通管 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]