Abstract: A LoRa-based cloud platform building fire monitoring system is designed in combination with the Internet of Things technology, proposed to solve the problems of complicated layout and wiring, short transmission distance, and low intelligence of traditional building fire monitoring system. The LoRa technology is used in the system to build a wireless sensor network, realizing the long-distance transmission of monitoring information and including terminal nodes and converge node. Terminal nodes monitor environmental information through a variety of sensors. The converge node can be used to receive data from all the terminal nodes, and upload to cloud platform by EC20 module. The test results show that the system can accurately display the environment data in the building in real time, and when an abnormal situation occurs, both terminal node and cloud can alert in time. The system has the advantages of wide coverage, low power consumption, low cost, easy deployment and so on, which has a wide application prospect.

Key words: building, fire monitoring, LoRa technology, long-distance transmission, environment monitoring, cloud platform, low power consumption