Study on methane sensor based on photoacoustic spectrum

FU Hua; ZHAI Bo

doi:10.13873/j.1000-97872010.09.018

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Study on methane sensor based on photoacoustic spectrum

更新时间：2025-09-11

- Study on methane sensor based on photoacoustic spectrum
- Vol. 29, Issue 9, Pages: 48-50(2010)
- 作者机构：
  
  辽宁工程技术大学电气与控制工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872010.09.018
  CLC： TP212
- Published：2010
- 稿件说明：
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[1]付华,翟波.光声光谱式甲烷气体传感器的研究[J].传感器与微系统,2010,29(09):48-50.

FU Hua, ZHAI Bo. Study on methane sensor based on photoacoustic spectrum[J]. 2010, 29(9): 48-50.
[1]付华,翟波.光声光谱式甲烷气体传感器的研究[J].传感器与微系统,2010,29(09):48-50. DOI： 10.13873/j.1000-97872010.09.018.

FU Hua, ZHAI Bo. Study on methane sensor based on photoacoustic spectrum[J]. 2010, 29(9): 48-50. DOI： 10.13873/j.1000-97872010.09.018.

摘要

根据物体在周期性变化的光的照射下会产生声音信号的现象

提出了一种基于光声光谱理论的甲烷气体检测的方法。根据比尔—朗伯定律

经过调制的平行光束通过不同体积分数的甲烷气体时

其光强将会发生不同程度的衰减

若衰减后的光束进入光声腔

将会在光声腔内产生光声信号

通过测定光声信号的幅值来达到检测甲烷气体体积分数的目的。此方法相对于通常的光谱法

增加了把热能转换为声信号的过程

具有极高的精确性和可靠性

为设计高灵敏度瓦斯传感器的研究提供理论依据。

Abstract

According to the phenomenon that the objects will generate sound signal under the irradiation of periodic light

a detection method of methane gas based on photoacoustic spectroscopy is proposed.According to Beer-Lambert law

when the modulated parallel beams is passing different volume fraction of methane gas

the light intensity will become attenuation in different degrees.If the decayed light go into a photoacoustic cavity

photoacoustic signal will be generated in the cavity.By measuring the amplitude of photoacoustic signal

the purpose of detecting the methane gas is achieved.Compared with usual spectral method

this method add a process that converting the heat energy into sound signal

which has high accuracy and reliability.It provide a theoretical basis for studying on high sensitive methane gas sensor.

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references

基于光谱吸收的煤矿瓦斯光纤传感气体的研究 [J]. 周孟然,李振璧,朱宗玖. 煤矿安全 . 2007(08)

基于红外光谱吸收原理的红外瓦斯传感器的实验 [J]. 张雷,尹王保,董磊,李霖峰,窦海鹏,贾锁堂. 煤炭学报 . 2006(04)

基于近红外吸收原理的甲烷浓度检测研究 [D]. 管立君. 燕山大学 2008

基于光声光谱技术的多组分气体检测方法研究 [D]. 张嵩. 重庆大学 2007

基于光声光谱技术的甲烷气体检测系统的研究 [D]. 王敏. 吉林大学 2006

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