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Enhancing PAS Stability Against Temperature Interference Using FPGA Implementation of Frequency Tracking and Amplitude Calibration
ID：118 View Protection：ATTENDEE Updated Time：2025-11-10 15:39:29 Hits：106 Poster Presentation

Start Time：Pending（Asia/Shanghai）

Duration：Pending

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Abstract
We report an FPGA-based method for joint resonant frequency tracking and amplitude calibration to mitigate temperature-induced measurement errors in photoacoustic gas sensing. By dynamically adjusting the modulation frequency in response to real-time temperature monitoring and applying a reference-based amplitude calibration function, the system significantly improves measurement accuracy and stability. Experimental results under dynamic temperature variations demonstrate a substantial reduction in concentration fluctuation and a 58.1% enhancement in sensitivity, with the minimum detection limit improved from 43 ppb to 18 ppb
Keywords
Photoacoustic spectroscopy, Temperature compensation, FPGA, Frequency tracking
Speaker
Yang Wang
Project Manager Fuzhou Power Supply Company

Submission Author
Shihong Lu Fuzhou Power Supply Company
Min Huang Fuzhou Power Supply Company
Yang Wang Fuzhou Power Supply Company
Yuhang Chen Fuzhou Power Supply Company
Feng Zhang Fuzhou Power Supply Company
Runhao Zhang Fuzhou Power Supply Company
Lin Chuanjie State Grid Fuzhou Power Supply Company
Tong Wu Fuzhou Power Supply Company
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Important Date

  • Conference Date

    Nov 21

    2025

    to

    Nov 23

    2025

  • Oct 20 2025

    Draft paper submission deadline

  • Dec 08 2025

    Registration deadline

Sponsored By
IEEE Instrumentation and Measurement Society
South China University of Technology
Organized By
South China University of Technology
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