Train smoke and fire alarm system based on wireless sensor network

The utility model relates to a train smoke and fire alarm system based on a wireless sensor network. The train smoke and fire alarm system includes multiple smoke and fire alarm nodes which are arranged in a train body to acquire the node information, a gateway node which acquires the information of the smoke and fire alarm nodes and classifies and arranges the information, and a train network control system which extracts the alarm and fault information and gives an alarm prompt. The smoke and fire alarm nodes are wirelessly communicated with one another, and the smoke and fire alarm nodes are wirelessly communicated with the gateway node. The gateway node is connected with the train network control system in a wired way. The train smoke and fire alarm system adopts the wireless transmission mode, so the internal wiring is saved, and the operation is simple and convenient, and the train load is reduced. At the same time, the real-time, intelligent, and omnibearing high speed train smoke and fire state monitoring and alarming is realized, corresponding measures can be taken to eliminate the smoke and fire hazards timely, and the smoke and fire hidden troubles of the high speed train are eliminated.