基于吸收光谱式瓦斯传感器的研究

Absorption Spectroscopy Based on Study of Methane Sensors

煤矿中瓦斯气体的浓度是引起煤矿瓦斯爆炸事故的主要原因。本文利用吸收光谱检测技术进行甲烷传感器在线检测的研究,通过调整激光器的电流和温度达到气体特定的吸收光谱线,从而有效地避免其他气体造成的干扰,检测限可达到从ppm级到%的含量级。实验结果表明,基于吸收光谱式甲烷传感器可以方便,快速的检测煤矿中瓦斯浓度。

The consistency of methane in coal mine is major reason of methane gas explosion in coal mine.In this paper,laser absorption spectroscopy detection technology is used in monitoring of consistency of methane gas.In the experiment,by adjusting the current and temperature of laser,reach the special absorption spectral line of gas,thus effectively avoid the interference of other gases,detection limit can reach from ppm to % level of the concentration levels.The result of the experiment shows that absorption spectroscopy based on the study of methane sensors can detect the consistency of methane in coal mine conveniently and rapidly.