Methane Concentration Measurement System Based on Virtual Instrument

闫晓梅; 张记龙; 张志伟; 徐振峰

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Methane Concentration Measurement System Based on Virtual Instrument

更新时间：2026-09-14

- Methane Concentration Measurement System Based on Virtual Instrument
- 基于虚拟仪器的瓦斯浓度检测系统
- Issue 1, Pages: 71-74(2006)
- 作者机构：
  
  中北大学教育部仪器科学与动态测试重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
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闫晓梅, 张记龙, 张志伟, et al. Methane Concentration Measurement System Based on Virtual Instrument[J]. 2006, (1): 71-74.
DOI：

闫晓梅, 张记龙, 张志伟, et al. Methane Concentration Measurement System Based on Virtual Instrument[J]. 2006, (1): 71-74. DOI：

摘要

研究了一种差分吸收瓦斯浓度检测系统.基于近红外光谱吸收原理

分布反馈式激光器(DFB)发出波长为1 650 NM的光

一路经过光纤传输到待测气室与甲烷气体发生作用

另一路经过光纤直接传到参考气室

将两路携带有用信息的光信号通过硬件电路转换为电信号

由虚拟仪器开发的软件进行采集、处理

得到浓度与电压的信息.实验结果表明:该系统起到了实时检测与监控甲烷气体浓度的作用.

Abstract

A system for measuring the methane concentration based on difference absorption has been studied.The light with central wavelength 1 650 nm is emitted by distribution feedback laser(DFB)

and one beam passes the methane gas in a gas cell

the other directly passes another reference gas cell.The useful light signal is converted into electric signal by hardware circuit.The relationship between concentration and voltage is obtained by virtual instrument software processing the voltage signal.The results of the experiments show that the real time detection and monitor of the methane gas can be completed in this system.

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references

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