Fiber optic strain twin-sensor-array for smart structural health monitoring  

作　　者：赵士刚 苑立波[2] 

机构地区：[1]National University Science Park,Harbin Engineering University [2]中国光学学会光电技术专业委员会

出　　处：《智能系统学报》2008年第2期177-180,共4页CAAI Transactions on Intelligent Systems

基　　金：National Natural Science Foundation of China(60577005);Specialized Research Fund for the Doctoral Program of Higher Education Institute of MOE,China,to Harbin Engineering University

摘　　要：A multiplexed white light interferometric fiber optic twin-sensor-array was designed to monitor the structural health of large buildings.In this sensing system,based on a Michelson interferometer,an optical path matching technique is used to demodulate each twin-sensor.Each twin-sensor-array consists of a 2×N sensing element linked by a 3 dB coupler.When one of the twin-sensor is used to measure strain,variations caused by temperature can be compensated for by referencing the other twin-sensor.The multiplexing capacity of the sensing scheme has been analyzed and experimental results with a 2×3 twin-sensor-array are given.A multiplexed white light interferometric fiber optic twin-sensor-array was designed to monitor the structural health of large buildings.In this sensing system,based on a Michelson interferometer,an optical path matching technique is used to demodulate each twin-sensor.Each twin-sensor-array consists of a 2×N sensing element linked by a 3 dB coupler.When one of the twin-sensor is used to measure strain,variations caused by temperature can be compensated for by referencing the other twin-sensor.The multiplexing capacity of the sensing scheme has been analyzed and experimental results with a 2×3 twin-sensor-array are given.

关 键 词：光纤敏感器 双敏感器数组 干涉仪 多路驱动 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]