Acta Photonica Sinica, Volume. 49, Issue 12, 93(2020)

High Precision Temperature Control Design for TDLAS Gas Detection System

Xu LIU1...2,5, Peng-shuai SUN1,3, Xi YANG1,2, Tao PANG1,3, Hua XIA1,3, Bian WU1,3, Zhi-rong ZHANG1,2,3,4, Zhi-feng SHU6 and Chi-min SHU7 |Show fewer author(s)
Author Affiliations
  • 1Anhui Provincial Key Laboratory of Photonic Devices and Material, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei23003, China
  • 2University of Science and Technology of China, Hefei3006, China
  • 3Key Lab of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei2001, China
  • 4Advanced Laserer Tenonology Laboratory of Anhui Province, Heifei230037, China
  • 5School of Electronic and Electrical Engineering, Bengbu University, Bengbu,Anhui233030, China
  • 6School of Physics and Materials Engineering, Heifei Normal University, Heifei23001, China
  • 7Department of Safety Health and Environmental Engineering, Yunlin University of Science and Technology, Yunlin,Taiwan64002, China
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    Figures & Tables(14)
    System design scheme
    Bootstrap current source
    PT00 Resistance-temperature characteristic curve
    Dual channel temperature acquisition and conditioning circuit
    TEC temperature control system
    System software diagram
    PID control diagram
    Schematic of internal structure of temperature control box
    Temperature control experimental system
    Stability of temperature control system at 35℃
    Change curves of measured values of temperature and concentration
    1-hour variation curves of 7 different temperature sets
    Concentration and second harmonics at relative steady state
    • Table 1. Selected temperature parameters in the stable period

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      Table 1. Selected temperature parameters in the stable period

      Time/hMeanRangeMinimumMaximumStd. deviationMedian absolute deviation
      1.0~2.015.9990.02015.98816.0080.0030.002
      3.3~4.320.0000.01719.99120.0080.0030.002
      5.3~6.323.9990.02323.98824.0110.0040.003
      7.5~8.527.9270.02427.91627.9400.0040.003
      9.5~10.531.9950.02731.98132.0080.0040.003
      11.5~12.535.9170.02935.90335.9320.0050.004
      13.5~14.539.9930.03539.97740.0120.0060.004
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    Xu LIU, Peng-shuai SUN, Xi YANG, Tao PANG, Hua XIA, Bian WU, Zhi-rong ZHANG, Zhi-feng SHU, Chi-min SHU. High Precision Temperature Control Design for TDLAS Gas Detection System[J]. Acta Photonica Sinica, 2020, 49(12): 93

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    Paper Information

    Category: Spectroscopy

    Received: --

    Accepted: --

    Published Online: Mar. 11, 2021

    The Author Email:

    DOI:10.3788/gzxb20204912.1230002

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