A train smoke and fire alarm system based on a wireless sensor network and a method

The invention relates to a train smoke and fire alarm system based on a wireless sensor network and a method. The train smoke and fire alarm system based on the wireless sensor network comprises several smoke and fire alarm nodes distributed inside a train body and used for acquiring information of each point, a gateway node used for collecting the information of each smoke and fire alarm node and carrying out classification and arrangement on the information of each smoke and fire alarm node, and a train network control system used for carrying out extraction on alarm and fault information and carrying out alarm prompting. Wireless communication connection is carried out among the smoke and fire alarm nodes and between the smoke and fire alarm nodes and the gateway node. Wired connection exists between the gateway node and the train network control system. Through the wireless transmission mode, wiring in the vehicle body is not needed, so that simplicity and convenience are realized, and burden for the train is reduced. At the same time, real time, intelligent and omnibearing smoke and fire status monitoring can be carried out on the high speed train. In addition, alarming can be carried out, so that the adoption of corresponding measures for smoke and fire calamities is convenient, and hidden smoke and fire risks of the high speed train are eliminated.