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HANG Li-jun, HE Cun-fu, WU Bin, CAI Dong-sheng. Application of Lock-in Amplifier Based on LabVIEW Platform for Leakage Detection[J]. Journal of Beijing University of Technology, 2008, 34(3): 241-244,264.
Citation: HANG Li-jun, HE Cun-fu, WU Bin, CAI Dong-sheng. Application of Lock-in Amplifier Based on LabVIEW Platform for Leakage Detection[J]. Journal of Beijing University of Technology, 2008, 34(3): 241-244,264.
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Application of Lock-in Amplifier Based on LabVIEW Platform for Leakage Detection

  • College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China

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  • Received Date: October 19, 2006
  • Available Online: January 10, 2023
    Graphical Abstract
    • Abstract
  • A Lock-in Amplifier based on LabVIEW platform is developed to improve the signal detection level of optical fiber sensor and is applied to demodulate interference signal phase from optical fiber pipeline leakage detecting system based on Sagnac interferometer.The demodulation principle of Lock-in Amplifier and the method of leaking source location for the detection system are analyzed,and an experiment is designed to detect leaking source and locate leaking source when the leakage occurs at 5.0 km.The results verify that the developed Lock-in Amplifier can demodulate leakage signal,and the leaking point can be located accurately.
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    • References (8)
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