After such infrared interference pattern is magnified and A/D transformed,interference pattern data will be got,which is input into a main computer for processing and identifying.

• 由于瓦斯气体分子在一定的红外波段对光有吸收特性,使光谱具有了瓦斯的特性,通过比较,反演出瓦斯气体在矿井中的浓度。