"基于单片机的烟感报警器设计与实现"

Abstract This thesis presents the design of a smoke alarm system based on a microcontroller. The system utilizes sensors, including temperature and smoke sensors, to convert signals such as temperature and smoke into detectable electrical signals. These signals are then amplified and filtered before being transmitted to an A/D conversion circuit, where the analog signals from the smoke and temperature sensors are converted into digital signals. The microcontroller is programmed to determine whether a fire has occurred at the scene. In the event of a fire, the system will activate a buzzer and indicator light for alerting purposes. The system uses a high-performance microcontroller chip as the core and a highly sensitive smoke sensor. By utilizing both sound and visual alerts for alarm notifications, the system greatly improves accuracy and reliability. Keywords: microcontroller, AT89C51, ADC0809, sensor Overall, this system provides a reliable and efficient solution for detecting fires and issuing timely alerts in order to prevent damage and ensure safety in various environments. The combination of advanced technology and sensitive sensors make this smoke alarm system an effective tool for fire prevention and protection.