Laser Journal, Volume. 45, Issue 12, 45(2024)

Design of data acquisition system for CH4 gas detection based on STM32H743

WANG Biao1... GAO Yuanchen1,2, FANG Sichao1,2,3 and QIN Li1,* |Show fewer author(s)
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Chang Guang Satellite Technol Co Ltd, Changchun 130102, China
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    In the process of natural gas transmission and oil extraction, in order to ensure the safety of personnel and equipment need to accurately detect CH4 gas concentration, based on the TDLAS laser gas detection technology designed a data acquisition system capable of high-precision measurements of CH4 gas concentration, the system selects the STM32H743 as the main control chip, adopts the ADC's dual mode, utilizes the internal ADC1 collects the fundamental and second harmonic signals, and the internal ADC2 collects the temperature and pressure data of the gas, and then the data are averaged, and the averaged calculation parameters are controlled by the master chip, and the data are transmitted and stored through DMA, and finally the master chip integrates and processes the multiple sets of data and sends them to the upper computer through the virtual USB interface in accordance with the specified data protocol. After actual testing, the system can collect and process data in a high-speed and stable way, and can be applied to other gas TDLAS detection systems.

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    WANG Biao, GAO Yuanchen, FANG Sichao, QIN Li. Design of data acquisition system for CH4 gas detection based on STM32H743[J]. Laser Journal, 2024, 45(12): 45

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    Paper Information

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    Received: Jul. 21, 2024

    Accepted: Mar. 10, 2025

    Published Online: Mar. 10, 2025

    The Author Email: Li QIN (qinl@ciomp.ac.cn)

    DOI:10.14016/j.cnki.jgzz.2024.12.045

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