Intelligent gas alarm based on infrared sensing

The invention provides an intelligent gas alarm based on infrared sensing. The intelligent gas alarm comprises a gas sampling module, a gas concentration detection module, a processing module, a communication module and an alarm module, the gas sampling module, the gas concentration detection module, the communication module and the alarm module are electrically connected with the processing module respectively; the gas concentration detection module comprises a detection chamber, and an infrared laser generator and a detection sensor which are arranged in the detection chamber, and further comprises an active detection module, the active detection module comprises a standard sample gas access port arranged on the inner wall of the detection chamber; the standard sample gas flow detection unit is arranged at the standard sample gas access port and is used for detecting the amount of the standard sample gas flowing in from the standard sample gas access port; and the electric control valve is arranged at the s