Journal of Applied Optics, Volume. 46, Issue 3, 589(2025)

Design of spectroscopy-based detector for SO2 concentration in SF6 decomposition products

Wei LIU1、*, Yifan MAO2, Sijia HUO2, and Shuai YANG2
Author Affiliations
  • 1School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China
  • 2Xi'an Power Supply Company, State Grid Shaanxi Electric Power Co.,Ltd., Xi'an 710032, China
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    Figures & Tables(13)
    Spectral absorption characteristics of SO2 gas
    Principal block diagram of ultraviolet absorption spectrum analysis module
    Schematic diagram of multiple reflection long optical path air chamber
    Structure diagram of ultraviolet absorption spectrum gas analysis module
    Real object of gas analysis module of ultraviolet absorption spectrum
    Schematic diagram of test gas circuit
    Gas circuit diagram of data acquisition site
    Original spectrum of SO2 standard gas with concentration within 100 μL/L
    Measured absorbance spectrum of SO2 standard gas with concentration within 100 μL/L
    Differential absorbance spectrum of SO2 gas selection section
    Amplitude spectrum of differential absorbance
    • Table 1. Prediction results of differential absorbance and concentration regression model

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      Table 1. Prediction results of differential absorbance and concentration regression model

      标准气体 种类标准气体 浓度/μL/L标定数据第一次验证数据第二次验证数据绝对误差 极差/μL/L
      预测 浓度/μL/L绝对 误差/μL/L相对 误差/%预测 浓度/μL/L绝对 误差/μL/L相对 误差/%预测 浓度/μL/L绝对 误差/μL/L相对 误差/%
      SO2100.00100.200.200.20100.390.390.39100.510.510.510.12
      20.0019.89−0.11−0.5519.83−0.17−0.8619.99−0.01−0.060.16
      2.002.130.136.301.94−0.06−3.132.200.2010.200.27
      50.0049.66−0.34−0.6849.55−0.45−0.9149.74−0.26−0.510.20
      5.004.90−0.10−2.014.72−0.28−5.615.070.071.470.35
      80.0080.000.000.0080.010.010.0180.120.120.150.11
      8.007.95−0.05−0.697.83−0.17−2.098.070.070.890.24
    • Table 2. Prediction results of differential absorbance amplitude spectrum and concentration regression model

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      Table 2. Prediction results of differential absorbance amplitude spectrum and concentration regression model

      标准气体 种类标准气体 浓度/μL/L标定数据第一次验证数据第二次验证数据绝对误差 极差/μL/L
      预测 浓度/μL/L绝对 误差/μL/L相对 误差/%预测 浓度/μL/L绝对 误差/μL/L相对 误差/%预测 浓度/μL/L绝对 误差/μL/L相对 误差/%
      SO2100.00100.150.150.15100.310.310.31100.480.480.480.33
      20.0019.91−0.09−0.4419.86−0.14−0.7020.030.030.140.17
      2.002.220.2211.112.040.041.822.310.3115.270.27
      50.0049.73−0.27−0.5449.61−0.39−0.7849.82−0.18−0.350.22
      5.004.98−0.02−0.454.80−0.20−3.945.160.163.180.36
      80.0080.000.000.0079.98−0.02−0.0280.140.140.180.16
      8.008.010.010.167.90−0.10−1.268.160.161.970.26
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    Wei LIU, Yifan MAO, Sijia HUO, Shuai YANG. Design of spectroscopy-based detector for SO2 concentration in SF6 decomposition products[J]. Journal of Applied Optics, 2025, 46(3): 589

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    Paper Information

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    Received: Mar. 20, 2024

    Accepted: --

    Published Online: May. 28, 2025

    The Author Email: Wei LIU (liuwei@xaut.edu.cn)

    DOI:10.5768/JAO202546.0301006

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