"基于51单片机的无线多功能火灾报警系统设计"

Abstract With the increase in fire and electricity usage in modern households, the frequency of home fires is on the rise. Smoke detectors have become a common safety feature in homes and buildings. This project focuses on the design of a wireless multifunctional fire alarm system using the STC89C51 microcontroller as the core controller. The system utilizes gas sensor MQ-2, ADC0809 analog-to-digital converter, DS18B20 temperature sensor, and other components to achieve basic functions. With these sensors and chips in place, the system can detect changes in combustible gas concentration or temperature in the environment and emit corresponding visual and audible alarm signals to alert users of a potential fire hazard. This intelligent system is designed to provide prompt and efficient fire alarm capabilities.Keywords: gas sensor MQ-2; fire alarm; microcontroller; intelligent control; DS18B20-1