光纤法珀应变传感器系统的实验研究  

EXPERIMENTAL STUDY ON FIBEROPTIC F-P STRAIN SENSOR SYSTEM

作　　者：陈伟民[1] 朱永[1] 封君[1] 黄尚廉[1] 

机构地区：[1]重庆大学

出　　处：《土木工程学报》2002年第4期36-39,64,共5页China Civil Engineering Journal

基　　金：重庆市院士基金;中国博士后科学基金资助

摘　　要：讨论了光纤法珀应变传感器的基本原理及其传感系统构成 ,分析了它在实际工程应用中的特点 ,介绍了该系统的等强度梁标定实验及结果 ,并重点介绍了在芜湖长江大桥连续钢桁梁模型实验的测试中、该系统与电阻应变测量仪的对比实验 ,结果表明 ,光纤法珀应变传感器系统的测量精度优于 3 με、测量范围大于 60 0 με ,安装工艺与电阻应变片相同 。The principle of fiberoptic Fabery?Perot strain sensor is studied in the paper. A proposed sensor system is made to compare with the foil strain gauge. Characteristics of the system are discussed in details. A calibration of the system is conducted with a beam of uniform strength. A comparative experiment is carried out by a modal test,it is performed on a steel truss of the Wuhu Bridge over Yangtze River. The results show that the accuracy of the proposed sensor is better than that of the foil strain gauge.

关 键 词：光纤法 应变传感器 法珀干涉仪 实验 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]