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Acta Optica Sinica, Volume. 44, Issue 1, 0106020(2024)

An Adaptive Post-Processing Algorithm for Strain Reading Anomalies in Distributed Optical Fiber Sensors

Zhihong Liang1, Kaiwen Deng1, Yunlong Ma2, Minghua Wang1, Debo Liu2, Huiqiang Wu2, and Yishou Wang1、*
Author Affiliations
  • 1School of Aerospace Engineering, Xiamen University, Xiamen 361005, Fujian , China
  • 2Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (26)
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    Figures & Tables(12)
    Types of SRAs for DOFS. (a) Pressure vs. time; (b) normal strain response; (c) HL-SRAs; (d) HF-SRAs

    Fig. 1. Types of SRAs for DOFS. (a) Pressure vs. time; (b) normal strain response; (c) HL-SRAs; (d) HF-SRAs

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    SRAs processing method with AGTOM

    Fig. 2. SRAs processing method with AGTOM

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    Reinforced composite tank. (a) Geometric size; (b) structural shape; (c) structural surface; (d) structural interior

    Fig. 3. Reinforced composite tank. (a) Geometric size; (b) structural shape; (c) structural surface; (d) structural interior

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    Testing flowchart

    Fig. 4. Testing flowchart

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    DOFS network design. (a) Design drawing of sensor network; (b) actual layout diagram

    Fig. 5. DOFS network design. (a) Design drawing of sensor network; (b) actual layout diagram

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    Original strain results (with SRAs)

    Fig. 6. Original strain results (with SRAs)

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    Original strain results (without SRAs). (a) Strain results in length position 0-400 mm; (b) strain results at length position of 100 mm

    Fig. 7. Original strain results (without SRAs). (a) Strain results in length position 0-400 mm; (b) strain results at length position of 100 mm

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    Original strain results (with SRAs). (a) Case Ⅰ HL-SRAs; (b) case Ⅱ HL-SRAs; (c) case Ⅲ HL-SRAs; (d) case IV HL-SRAs; (e) case Ⅰ HF-SRAs; (f) case Ⅱ HF-SRAs; (g) case Ⅲ HF-SRAs; (h) case Ⅳ HF-SRAs

    Fig. 8. Original strain results (with SRAs). (a) Case Ⅰ HL-SRAs; (b) case Ⅱ HL-SRAs; (c) case Ⅲ HL-SRAs; (d) case IV HL-SRAs; (e) case Ⅰ HF-SRAs; (f) case Ⅱ HF-SRAs; (g) case Ⅲ HF-SRAs; (h) case Ⅳ HF-SRAs

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    Comparison of post-processing results for different methods (HL-SRAs). (a) Case Ⅰ HL-SRAs; (b) case Ⅱ HL-SRAs; (c) case Ⅲ HL-SRAs; (d) case Ⅳ HL-SRAs

    Fig. 9. Comparison of post-processing results for different methods (HL-SRAs). (a) Case Ⅰ HL-SRAs; (b) case Ⅱ HL-SRAs; (c) case Ⅲ HL-SRAs; (d) case Ⅳ HL-SRAs

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    Comparison of post-processing results for different methods (HF-SRAs). (a) Case Ⅰ HF-SRAs; (b) case Ⅱ HF-SRAs; (c) case Ⅲ HF-SRAs; (d) case Ⅳ HF-SRAs

    Fig. 10. Comparison of post-processing results for different methods (HF-SRAs). (a) Case Ⅰ HF-SRAs; (b) case Ⅱ HF-SRAs; (c) case Ⅲ HF-SRAs; (d) case Ⅳ HF-SRAs

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    • Table 1. Adaptive thresholds for different typical cases

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      Table 1. Adaptive thresholds for different typical cases

      TypeDBIkST
      Case Ⅰ HL-SRAs0.00142115.72
      Case Ⅱ HL-SRAs0.00153126.85
      Case Ⅲ HL-SRAs0.01162277.02
      Case Ⅳ HL-SRAs0.02961056.72
      Case Ⅰ HF-SRAs0.00272263.85
      Case Ⅱ HF-SRAs0.00812120.65
      Case Ⅲ HF-SRAs0.00262478.16
      Case Ⅳ HF-SRAs0.00262126.68

    • Table 2. PCC results for post-processed curves and strain curves without SRAs

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      Table 2. PCC results for post-processed curves and strain curves without SRAs

      TypeRaw dataPICMGTMAGTOM
      Case Ⅰ HL-SRAs0.4130.3830.9960.994
      Case Ⅱ HL-SRAs0.3070.5120.9920.984
      Case Ⅲ HL-SRAs0.4370.2180.7980.971
      Case Ⅳ HL-SRAs0.3400.4540.9200.965
      Case Ⅰ HF-SRAs0.8370.8840.8550.933
      Case Ⅱ HF-SRAs-0.008-0.2240.8830.929
      Case Ⅲ HF-SRAs0.4410.7760.8320.917
      Case Ⅳ HF-SRAs0.2480.1070.7570.954
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    Zhihong Liang, Kaiwen Deng, Yunlong Ma, Minghua Wang, Debo Liu, Huiqiang Wu, Yishou Wang. An Adaptive Post-Processing Algorithm for Strain Reading Anomalies in Distributed Optical Fiber Sensors[J]. Acta Optica Sinica, 2024, 44(1): 0106020

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 21, 2023

    Accepted: Oct. 21, 2023

    Published Online: Jan. 15, 2024

    The Author Email: Wang Yishou (wangys@xmu.edu.cn)

    DOI:10.3788/AOS231457

    CSTR:32393.14.AOS231457

    Topics

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