Design of Smoke Detection and Alarm System Based on LoRa

Aiming at the problems of traditional smoke detectors such as wiring difficulties, high line construction cost, weak anti-interference ability, and short transmission distance, this paper presents a design scheme of smoke detection and alarm system based on LoRa. The terminal is designed with the main control chip and LoRa module as the core, and the MCU is the control core to design the gateway, combined with the design of the communication protocol, to realize the functions of periodic data reporting, data abnormal alarm, abnormal state alarm and so on. Based on the LoRa network, this paper designs the overall architecture of the system. In addition, the article designs the system software, elaborates the system workflow, and proposes a low power consumption strategy for the terminal, which effectively reduces the system power consumption.