Intelligent Smoke Alarm Based on Microcontroller

• DOI: 10.54691/12nbab76
• Publication Date: 2025-03-21T18:55:35Z
• Authors: Zhengwei Song; Ziliang Liu; Yinghui Li; Lanhe Yang; Runhao Chen

The urbanization process is unstoppable, with towering high-rise buildings emerging one after another. In this rapidly developing era, urban buildings continue to rise, and the safety hazards and fire problems of high-rise buildings in cities have not been well solved. Intelligent smoke alarms based on microcontrollers have significant practical significance. Design a real-time fire detection system based on STM32 microcontroller as the microcontroller core, combined with temperature, smoke, and flame sensors to detect various environmental values in real time, providing early warning for fire incidents. By connecting the various communication pins of the sensor through a microcontroller, the signals collected by the sensor are received. The program then quantifies and processes the raw signal data to drive the OLED display screen to display real-time values and alarm status. Applying IoT communication technology, the system is equipped with a WiFi communication module, which can connect to a network cloud server and send data to the cloud server for relay, and then remotely send it to the mobile APP for display, making it convenient for users to check the fire alarm situation in a timely manner. When a fire occurs, the buzzer will be driven for alarm reminder, and the mobile APP can also remotely obtain the alarm prompt, improving the efficiency of fire warning. After on-site practical testing, this system can effectively solve the problem of high-rise building fires.