基于虚拟仪器技术的光纤应变测试系统

英文篇名：Optical Fiber Strain-Testing System Based on Virtual Instrument
中文刊名：传感技术学报
英文刊名：Chinese Journal of Sensors and Actuators
作者：高占凤 ; 杜彦良
英文作者：GAO Zhan-feng 1* ; DU Yan-liang2 1. Computer Department of Shijiazhuang Railway Institute ; Shijiazhuang 050043 ; China ; 2. Structural Health Monitoring and Control Institute of Shijiazhuang Railway Institute ; Shijiazhuang 050043 ; China
中文关键词：虚拟仪器 ; 数据采集 ; 应变 ; 自动测试
英文关键词：virtual instrument(VI) ; data acquisition ; strain ; automatic testing
出版日期：2006-06-30
机构：石家庄铁道学院计算机系,石家庄铁道学院大型结构健康诊断与控制研究所石家庄050043,石家庄050043
年：2006
期：06
出版单位：传感技术学报

摘要

分析了光纤应变传感器的基本原理,并在实验室与电阻式应变传感器进行了应变对比测试实验.结合计算机虚拟仪器技术,以桥梁结构为被测对象,设计了基于法-珀光纤传感技术的应变测试系统.系统通过PC-DAQ采集平台和LabVIEW实现数据的自动采集和处理.应用结果表明,该系统不但具有传统电测法的优点,同时具有灵敏度高、抗干扰性强的特点,可用于大型结构健康状态的在线监测,在工程实际应用中具有重要意义.
The basic principle of Fabry-Perot(F-P) optic fiber strain sensor was analyzed, and experiments in contrasting with the resistance strain sensor was performed in laboratory.Combined with the technology of virtual instrument, a new optical fiber strain testing system for bridge structure was designed. The system uses PC-DAQ technology and LabVIEW to achieve data automatic acquisition and processing. Test results show that the system is characterized by the advantages of the conventional electric testing, high sensitivity and strong of anti-interference. It can be applied to online monitoring of great structural under health condition with significance in practical engineering application.

引文

[1]李宏男,李东升,赵柏东.光纤健康监测方法在土木工程中的研究与应用进展[J].地震工程与工程振动,2002,22(6):76-83.
    [2]Choquet p,Juneauf,Dadounf.New Generation of Fiber-Optic Sensors for Dam Monitoring[C]∥Proceedings of the1999In-ternational Conference on DamSatefy and Monitorings,Three Gorge Project Site,Yichang,Hubei,China,713-721.
    [3]刘德煜.用于应变测量的光纤传感器[J].桥梁建设,2003,(2):71-72.
    [4]Grattan KTV,Sun T.Fiber Optic Sensor Technology:a Re-view[J].Sensors and Actuators,2000,82:40-61.
    [5]Hoist A,et al.Fiber-Optic Intensity-Modulated Sensors for Continuous Observation of Concrete and Rock fill Dams[C]∥Proc.1th European Conference on Smart Structures and Mate-rials,1992:223-226.
    [6]Roctest Inc.Instruction Manual of Sensoptic Fiber-Optic Sen-sors Fabry-Perot Strain Gage,2000.
    [7]杨乐平,李海涛.LabVIEW高级程序设计[M].北京:清华大学出版社,2003.
    [8]PCI6013User Manual[S].U.S:National Instruments.1998.