Opto-Electronic Engineering, Volume. 51, Issue 4, 240022-1(2024)

Programmable gate array WM-TDLAS gas detection system design and application

Xin Zhang... Haifeng Qiu, Jiaqi Lan, Qin Hu and He Zhang* |Show fewer author(s)
Author Affiliations
  • State Key Laboratory of High Power Semiconductor Laser, Changchun University of Technology, Changchun, Jilin 130022, China
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    Figures & Tables(10)
    Quadrature phase lock-in principle block diagram
    Structure of the FPGA-based WM-TDLAS CO2 concentration detection system
    Block diagram of FPGA internal logic structure
    Detection system linearity experiment. (a) Amplitude extraction result of sinusoidal signal; (b) Linear fitting of extracted amplitude with actual value
    Anti-noise and Q-value experiment. (a) Harmonic extraction results with different signal-to-noise ratio; (b) Frequency amplitude response of DLIA
    Experimental platform for CO2 concentration detection
    Experimental results of carbon dioxide concentration detection. (a) Second harmonic waveforms; (b) Carbon dioxide concentration inversion curve
    Response time test of carbon dioxide detection system
    System stability experiment. (a) Carbon dioxide concentration fluctuates; (b) Allan variance
    • Table 1. Volume comparison of lock-in amplifier (L: Length; W: Width; H: Height)

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      Table 1. Volume comparison of lock-in amplifier (L: Length; W: Width; H: Height)

      TypeL×W×H/cmVolume/cm3
      OE102244.8×47.5×13.328302
      MFIA28.3×23.2×10.26696
      LIA-BVD18×10×1.5270
      DLIA12.6×8.5×1.5160
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    Xin Zhang, Haifeng Qiu, Jiaqi Lan, Qin Hu, He Zhang. Programmable gate array WM-TDLAS gas detection system design and application[J]. Opto-Electronic Engineering, 2024, 51(4): 240022-1

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    Paper Information

    Category: Article

    Received: Jan. 2, 2024

    Accepted: Feb. 27, 2024

    Published Online: Jul. 8, 2024

    The Author Email: Zhang He (张贺)

    DOI:10.12086/oee.2024.240022

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