Low-voltage power distribution cabinet fire alarm protection device and temperature detection method

The invention relates to a low-voltage power distribution cabinet fire alarm protection device and a temperature detection method. The low-voltage power distribution cabinet fire alarm protection device comprises a cabinet body, a control box, a cabinet door, a light alarm, a sound alarm, a support, a fire extinguishing device, a temperature sensor and a central processor. The low-voltage power distribution cabinet fire alarm protection device is characterized in that the cabinet door is installed on the cabinet body through a door shaft; the top part of the cabinet body is provided with bus holes; the cabinet body is internally provided with a plurality of partition space structures formed by spacing boards, and each partition space structure is internally provided with a smog sensor, a contactor, a mounting frame and a connector; the cabinet body is further internally provided with mounting boards, and the mounting frame is installed on the mounting boards; and a power supply input wire and a power supply output wire are respectively connected with an input end and an output end of the contactor. The low-voltage power distribution cabinet fire alarm protection device is capable of realizing the purposes of intelligent temperature detection, intelligent fire detection, intelligent power cutting and intelligent fire extinguishing, the service lifetime of a low-voltage power distribution cabinet is prolonged, a fire is avoided, the application of the low-voltage power distribution cabinet is wider, and the low-voltage power distribution cabinet fire alarm protection device is suitable for market popularization and is good in economic benefit.