Research of a New Type of Intelligent Infrared Absorption Gas Sensor Used in Mine

Aiming at the disadvantages of traditional gas sensor used in mine,the paper designed a new type of gas sensor based on principle of infrared ray absorption. It introduced detection principle of infrared absorption, expounded composition of infrared absorption gas sensor. It also gave calculating method for concentration value of gas.Experimental result showed that the error between concentration value measured by infrared absorption gas sensor and actual value achieved demands of coal safety verification.