Data acquisition and processing of FBG strain signal based on LabVIEW

Home > Archive>Volume 40, Issue 11, 2017 >166-169

Data acquisition and processing of FBG strain signal based on LabVIEW
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                        Wu Xiaorong1Wu Xiaorong
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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Gu Jinliang1Gu Jinliang
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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Liu Ming2Liu Ming
Inner Mongolia North Heavy Indistries Group Corp. Ltd, Baotou 014033, China
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Xia Yan1Xia Yan
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
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Affiliation:1. National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China; 2. Inner Mongolia North Heavy Indistries Group Corp. Ltd, Baotou 014033, China
Clc Number:TP302
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Abstract:

In order to simplify the fiber Bragg grating strain test demodulation, this paper presents a LabVIEWbased strain test system data acquisition software and data analysis and processing software. Firstly, the test principle of the fiber Bragg grating sensor is introduced. Secondly, the fiber Bragg grating wavelength demodulation scheme based on the threestep phase shift demodulation algorithm is determined according to the actual measurement. The phase unwrapping phase phase is solved and the actual Into a linear relationship between the phase value, the final solution of the strain. Finally, the cantilever beam and resistance strain gauge test to verify.

Key words:fiber Bragg grating; LabVIEW; data acquisition; data processing; strain testing

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Online: January 02,2018
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