Signal correction using transmitted spot information: A low error photoacoustic spectroscopy-based gas detection system

Hongtu Cheng; Fuping Zeng; Xianzong Chao; Xinghai Jiang; Zhi Fang

doi:10.1016/j.sna.2024.116179

Signal correction using transmitted spot information: A low error photoacoustic spectroscopy-based gas detection system

Hongtu Cheng, Fuping Zeng, Xianzong Chao, Xinghai Jiang, Zhi Fang

COLLEGE OF ELECTRICAL ENGINEERING AND CONTROL SCIENCE

Research output: Contribution to journal › Article › peer-review

Abstract

Photoacoustic spectroscopy (PAS)-based gas sensing system is popular in industries due to advantages of high sensitivity and portable. However, data fluctuation often occurs in the on-line monitoring mode, and the reason has not been found yet. In this work, influential factors and environment-related variables of the photoacoustic (PA) signal were analyzed. A beam quality analyzer was employed as a tool to detect the parameters of the optical path condition. The robustness was verified by a long-time measurement. The results showed that the centroid y of the beam spot has the best linear correlation with the PA signal with a correlation coefficient higher than 0.9. The largest and average measurement error were 26.98 % and 10.95 % without the correction, while after the correction they were only 12.24 % and 5.39 %. The results can provide ideas to the robustness improvement of the PAS gas detection system.

Original language	English
Article number	116179
Journal	Sensors and Actuators A: Physical
Volume	383
DOIs	https://doi.org/10.1016/j.sna.2024.116179
State	Published - 1 Mar 2025

Keywords

Correction
Gas sensing
Measurement error
Photoacoustic spectroscopy

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10.1016/j.sna.2024.116179

Cite this

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title = "Signal correction using transmitted spot information: A low error photoacoustic spectroscopy-based gas detection system",

abstract = "Photoacoustic spectroscopy (PAS)-based gas sensing system is popular in industries due to advantages of high sensitivity and portable. However, data fluctuation often occurs in the on-line monitoring mode, and the reason has not been found yet. In this work, influential factors and environment-related variables of the photoacoustic (PA) signal were analyzed. A beam quality analyzer was employed as a tool to detect the parameters of the optical path condition. The robustness was verified by a long-time measurement. The results showed that the centroid y of the beam spot has the best linear correlation with the PA signal with a correlation coefficient higher than 0.9. The largest and average measurement error were 26.98 % and 10.95 % without the correction, while after the correction they were only 12.24 % and 5.39 %. The results can provide ideas to the robustness improvement of the PAS gas detection system.",

keywords = "Correction, Gas sensing, Measurement error, Photoacoustic spectroscopy",

author = "Hongtu Cheng and Fuping Zeng and Xianzong Chao and Xinghai Jiang and Zhi Fang",

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year = "2025",

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doi = "10.1016/j.sna.2024.116179",

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T1 - Signal correction using transmitted spot information

T2 - A low error photoacoustic spectroscopy-based gas detection system

AU - Cheng, Hongtu

AU - Zeng, Fuping

AU - Chao, Xianzong

AU - Jiang, Xinghai

AU - Fang, Zhi

PY - 2025/3/1

Y1 - 2025/3/1

N2 - Photoacoustic spectroscopy (PAS)-based gas sensing system is popular in industries due to advantages of high sensitivity and portable. However, data fluctuation often occurs in the on-line monitoring mode, and the reason has not been found yet. In this work, influential factors and environment-related variables of the photoacoustic (PA) signal were analyzed. A beam quality analyzer was employed as a tool to detect the parameters of the optical path condition. The robustness was verified by a long-time measurement. The results showed that the centroid y of the beam spot has the best linear correlation with the PA signal with a correlation coefficient higher than 0.9. The largest and average measurement error were 26.98 % and 10.95 % without the correction, while after the correction they were only 12.24 % and 5.39 %. The results can provide ideas to the robustness improvement of the PAS gas detection system.

AB - Photoacoustic spectroscopy (PAS)-based gas sensing system is popular in industries due to advantages of high sensitivity and portable. However, data fluctuation often occurs in the on-line monitoring mode, and the reason has not been found yet. In this work, influential factors and environment-related variables of the photoacoustic (PA) signal were analyzed. A beam quality analyzer was employed as a tool to detect the parameters of the optical path condition. The robustness was verified by a long-time measurement. The results showed that the centroid y of the beam spot has the best linear correlation with the PA signal with a correlation coefficient higher than 0.9. The largest and average measurement error were 26.98 % and 10.95 % without the correction, while after the correction they were only 12.24 % and 5.39 %. The results can provide ideas to the robustness improvement of the PAS gas detection system.

KW - Correction

KW - Gas sensing

KW - Measurement error

KW - Photoacoustic spectroscopy

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DO - 10.1016/j.sna.2024.116179

M3 - 文章

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SN - 0924-4247

VL - 383

JO - Sensors and Actuators A: Physical

JF - Sensors and Actuators A: Physical

M1 - 116179

ER -

Signal correction using transmitted spot information: A low error photoacoustic spectroscopy-based gas detection system

Abstract

Keywords

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