关键词: 火灾监测, 气压传感, LoRa通讯, CKS32

Abstract: Aiming at current lack of fire monitor in electric substations, a fire alarm system based on LoRa wireless communication is designed. The system determines whether a fire occurs by monitoring the pressure change of the fire detection tube. The use of LoRa wireless communication instead of traditional wired communication reduces the construction process, shortens the construction cycle, and facilitates the maintenance of the system at a later stage. The test proves that the system can accurately and quickly monitor the occurrence of fire, and transmit the alarm information to the fire host through LoRa, which can replace the wired system and be quickly deployed in the electric substation equipment area.

Key words: fire detection, pressure sensor, LoRa communication, CKS32