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Laser & Optoelectronics Progress, Volume. 61, Issue 17, 1706002(2024)

Φ-OTDR Localization Method Based on Region Segmentation and Edge Detection

Wei Shen1, Jingyi Dai2, Yong Dai1, Xin Hu1, Ling Ju1, Xinglong Wang1, Chuanlu Deng2, and Yi Huang2、*
Author Affiliations
  • 1State Grid Taizhou Power Supply Company, Taizhou 225300, Jiangsu, China
  • 2Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (10)
    References (17)
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    Figures & Tables(10)
    Flow diagram of localization method

    Fig. 1. Flow diagram of localization method

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    Schematic diagram of region segmentation

    Fig. 2. Schematic diagram of region segmentation

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    Experimental setup of coherent detection type Φ-OTDR system

    Fig. 3. Experimental setup of coherent detection type Φ-OTDR system

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    Disturbance localization curves. (a) Traditional amplitude variance localization method; (b) coarse localization method based on region segmentation

    Fig. 4. Disturbance localization curves. (a) Traditional amplitude variance localization method; (b) coarse localization method based on region segmentation

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    Phase time-space images. (a) Before forward differencing; (b) after forward differencing

    Fig. 5. Phase time-space images. (a) Before forward differencing; (b) after forward differencing

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    Edge detection binary images. (a) Canny operator; (b) Sobel operator; (c) Laplacian operator

    Fig. 6. Edge detection binary images. (a) Canny operator; (b) Sobel operator; (c) Laplacian operator

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    Trace position frame diagrams. (a) Canny operator; (b) Sobel operator; (c) Laplacian operator

    Fig. 7. Trace position frame diagrams. (a) Canny operator; (b) Sobel operator; (c) Laplacian operator

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    Fine localization results of three types of disturbance events

    Fig. 8. Fine localization results of three types of disturbance events

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    • Table 1. Localization results and processing time for three types of disturbance events

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      Table 1. Localization results and processing time for three types of disturbance events

      Type of disturbanceAccuracy for coarse localization /%Accuracy for amplitude variance localization /%Time for coarse localization /sTime for amplitude variance localization /s
      PZT97780.0460.443
      Shaking10071
      Knocking9862

    • Table 2. Comparison of time consumption between combined method and edge detection algorithm only

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      Table 2. Comparison of time consumption between combined method and edge detection algorithm only

      Type of disturbanceTime for coarse-fine localization /sTime for localization based on edge detection /s
      PZT0.3381.631
      Shaking0.3271.636
      Knocking0.3291.668
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    Wei Shen, Jingyi Dai, Yong Dai, Xin Hu, Ling Ju, Xinglong Wang, Chuanlu Deng, Yi Huang. Φ-OTDR Localization Method Based on Region Segmentation and Edge Detection[J]. Laser & Optoelectronics Progress, 2024, 61(17): 1706002

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Oct. 13, 2023

    Accepted: Dec. 11, 2023

    Published Online: Sep. 14, 2024

    The Author Email: Yi Huang (huangyi1008@shu.edu.cn)

    DOI:10.3788/LOP232290

    CSTR:32186.14.LOP232290

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology