12 January 2018 Research on distributed optical fiber sensing data processing method based on LabVIEW
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The pipeline leak detection and leak location problem have gotten extensive attention in the industry. In this paper, the distributed optical fiber sensing system is designed based on the heat supply pipeline. The data processing method of distributed optical fiber sensing based on LabVIEW is studied emphatically. The hardware system includes laser, sensing optical fiber, wavelength division multiplexer, photoelectric detector, data acquisition card and computer etc. The software system is developed using LabVIEW. The software system adopts wavelet denoising method to deal with the temperature information, which improved the SNR. By extracting the characteristic value of the fiber temperature information, the system can realize the functions of temperature measurement, leak location and measurement signal storage and inquiry etc. Compared with traditional negative pressure wave method or acoustic signal method, the distributed optical fiber temperature measuring system can measure several temperatures in one measurement and locate the leak point accurately. It has a broad application prospect.
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Zhonghu Li, Zhonghu Li, Meifang Yang, Meifang Yang, Luling Wang, Luling Wang, Jinming Wang, Jinming Wang, Junhong Yan, Junhong Yan, Jing Zuo, Jing Zuo, "Research on distributed optical fiber sensing data processing method based on LabVIEW", Proc. SPIE 10621, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 106211P (12 January 2018); doi: 10.1117/12.2295347; https://doi.org/10.1117/12.2295347

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