Research on temperature compensation method for methane sensor based on TDLAS

Meng Zhang; Hui Gao; Shuzhi Yao; Feiyan Qiu; Yan Wu; Junyang Liu; Yong Yang

doi:10.1117/12.3008083

18 December 2023 Research on temperature compensation method for methane sensor based on TDLAS

Meng Zhang, Hui Gao, Shuzhi Yao, Feiyan Qiu, Yan Wu, Junyang Liu, Yong Yang

Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 1296820 (2023) https://doi.org/10.1117/12.3008083
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Methane, as the main component of gas and natural gas, its flammable and explosive characteristics to industrial production, urban safety and daily life has brought great potential hazards. Accurately measuring the concentration of methane gas is of great significance for urban development and environmental protection. At present, tunable semiconductor laser absorption spectroscopy (TDLAS) has become one of the important technologies for methane sensor concentration measurement. However, this technology is easily affected by environmental temperature, and the relative error of concentration measurement caused by environmental temperature changes is greater than 50%. Therefore, this article proposes a temperature compensation calibration method for methane sensors based on TDLAS technology. This article first analyzes the effect of temperature on the absorption intensity of methane gas, and studies the relationship between its concentration value and temperature. Then, based on theoretical analysis, the negative temperature coefficient variation between the concentration value and temperature is achieved through power normalization processing algorithm. At the same time, a temperature compensation system is established to compensate for the concentration value and suppress the interference caused by environmental temperature to the detection. Finally, the feasibility of the temperature compensation calibration method was verified through experiments. The experimental results show that under the same testing conditions, the relative error of the measured concentration after temperature compensation can be reduced to less than 5%, significantly improving the detection accuracy of the methane sensor.

Citation Download Citation

Meng Zhang, Hui Gao, Shuzhi Yao, Feiyan Qiu, Yan Wu, Junyang Liu, and Yong Yang "Research on temperature compensation method for methane sensor based on TDLAS", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 1296820 (18 December 2023); https://doi.org/10.1117/12.3008083

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Temperature metrology

Methane

Sensors

Signal intensity

Environmental sensing

Light absorption

Absorption

Show All Keywords

Keywords/Phrases

Search In:

Publication Years