Dynamic demodulation of fiber Bragg grating sensing based on LabVIEW

doi:10.3724/SP.J.1087.2013.01473

Journal of Computer Applications ›› 2013, Vol. 33 ›› Issue (05): 1473-1475.DOI: 10.3724/SP.J.1087.2013.01473

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Dynamic demodulation of fiber Bragg grating sensing based on LabVIEW

HU Liaolin,ZHANG Weichao,HUA Dengxin,WANG Li,DI Huige

School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an Shaanxi 710048, China

Received:2012-12-03 Revised:2013-01-04 Online:2013-05-08 Published:2013-05-01
Contact: HU Liaolin

基于LabVIEW的光纤光栅传感的动态解调

胡辽林,张卫超,华灯鑫,汪丽,狄慧鸽

西安理工大学机械与精密仪器工程学院，西安 710048

通讯作者: 胡辽林
作者简介:胡辽林(1968-)，男，四川岳池人，副教授，博士，主要研究方向：光纤传感、光纤通信；张卫超(1986-)，男，陕西西安人，硕士，主要研究方向：光纤传感；华灯鑫(1964-)，男，浙江萧山人，教授，博士生导师，博士，主要研究方向：激光雷达、光纤传感。
基金资助:
国家自然科学基金资助项目(61275185);陕西省教育厅科学研究计划项目(2010JK716)

Abstract

Abstract: A dynamic Fiber Bragg Grating(FBG) sensing demodulation system was designed by using tunable optical filter based on LabVIEW. With the use of Visual Instrument (VI) program of LabVIEW software, tunable filter was controlled by a computer through hardware interface to scan the fixed wavelength range. Photoelectric signal was collected by acquisition circuits and sent to the computer to be analyzed, so reflection wavelength and FBG's strain could be obtained. Results of dynamic sensing demodulation experiments were identical with the results from spectrum analyzer, which has verified the correctness and feasibility of the designed scheme.

Key words: fiber Bragg grating, sensing, demodulation, tunable filter, LabVIEW

摘要： 设计了一种基于LabVIEW和可调谐光滤波器的光纤光栅传感动态解调系统。用LabVIEW编写虚拟仪器(VI)程序，通过硬件接口由计算机控制可调谐光滤波器，使其在固定波长范围内扫描；采集电路对光电转换后的信号进行采集并送到计算机中分析处理，得到传感信号的反射波长以获得应变量。最后把传感解调系统的测试结果和光谱仪的测试结果进行比较，两者基本一致，说明了解调系统的设计是正确的。

关键词: 光纤光栅, 传感, 解调, 可调谐滤波器, LabVIEW

CLC Number:

TN252
TP399

HU Liaolin ZHANG Weichao HUA Dengxin WANG Li DI Huige. Dynamic demodulation of fiber Bragg grating sensing based on LabVIEW[J]. Journal of Computer Applications, 2013, 33(05): 1473-1475.

胡辽林张卫超华灯鑫汪丽狄慧鸽. 基于LabVIEW的光纤光栅传感的动态解调[J]. 计算机应用, 2013, 33(05): 1473-1475.

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Dynamic demodulation of fiber Bragg grating sensing based on LabVIEW

基于LabVIEW的光纤光栅传感的动态解调

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