Abstract: In order to reduce the damage to the ecological environment and property losses caused by the frequent occurrence of forest fires, a forest fire positioning system based on the wireless sensor network is designed. The system is composed of fire collection nodes, gateway nodes, and fire monitoring nodes. The fire collection nodes use a variety of sensors to collect the fire parameters within the monitoring area, utilize the improved DV-Hop positioning algorithm to locate the fire, and transmit the positioning data to the gateway nodes. Then, the data is sent to the 4G network via the gateway nodes and finally transmitted to the remote fire monitoring center for fire monitoring, fire warning, and historical data query. Experiments have proven that the system can quickly and accurately locate the fire within the monitoring area and issue an alarm in a timely manner, thus preventing the occurrence of forest fires.

Key words: forest fire, fire warning, wireless sensor network, fire location