"无线多功能烟雾报警器设计与实现：基于单片机的智能提示系统"

Based on the design of a smoke alarm system using a single-chip microcomputer, this project aims to address the increasing frequency of fires in residential areas and high-traffic locations due to the rise in household fire and electricity usage. In the event of a fire, it is often difficult to extinguish it in time due to inadequate firefighting equipment, lack of proper evacuation procedures, and panic among occupants, leading to significant loss of life and property. The wireless multi-functional smoke alarm system studied in this project utilizes the STC89C51 microcontroller as the core controller, along with gas sensor MQ-2, ADC0809 analog-to-digital converter, DS18B20 temperature sensor, and other components to achieve its basic functions. Through the selected sensors and chips, the system is able to detect changes in combustible gas concentrations or temperatures in the environment and emit corresponding visual and auditory alarm signals to alert occupants of a potential fire hazard, enabling intelligent warning. This project serves as a crucial step towards enhancing fire safety and preventing tragic incidents caused by fires, providing a proactive approach to safeguarding lives and property. Key words: gas sensor MQ-2; smoke alarm; microcontroller; DS18B20.