基于51单片机的智能烟雾报警系统的设计

基于51单片机的智能烟雾报警系统的设计
Abstract
The intelligent smoke alarm system based on 51 single-chip microcomputer is designed to reduce the risk of fire accidents caused by human negligence. This system uses a smoke sensor, a temperature sensor, a buzzer and a display module to detect and alarm in the occurrence of smoke and high temperature. The design of the entire system is controlled by the 51 single-chip microcomputer. The paper discusses the design and implementation of the system, the algorithm for information processing, the choice of material and the hardware structure. The system has high reliability and good practicability, and can effectively improve the safety factor of the living environment.
Introduction
In recent years, with the increase in housing density and the use of electrical appliances, the frequency of fire incidents has gradually increased. The smoke caused by fire
is the main cause of death and injury, and it is difficult to detect by human senses. Therefore, the development of intelligent smoke alarm system is of great significance to improve the safety factor of the living environment.
This paper designs an intelligent smoke alarm system based on 51 single-chip microcomputer, which can detect smoke and high temperature and accurately alarm. This system is composed of a smoke sensor, a temperature sensor, a buzzer and a display module. The entire system is controlled by 51 single-chip microcomputer, which has strong practicality and
reliability.
Design and Implementation
Hardware design
The smart smoke alarm system is mainly composed of four parts: a smoke sensor, a temperature sensor, a buzzer and a display module. The smoke sensor and the temperature sensor are set on the same PCB board, and the buzzer and the display module are set on another PCB board.
The smoke sensor is used to detect the smoke concentration in the environment. When the smoke concentration exceeds the threshold, the output signal of the smoke sensor is sent to the 51 single-chip microcomputer. The temperature sensor is used to detect the ambient temperature changes, and when the temperature exceeds the threshold, the temperature sensor sends an output signal to the 51 single-chip microcomputer. The buzzer is used to output the alarm sound, and the display module is used to display the alarm information.
Software design
The software design of the intelligent smoke alarm system includes information processing algorithm design,
error handling design and system control design. The information processing algorithm includes smoke detection and temperature detection. When the smoke concentration or temperature exceeds the threshold, the system will start the alarm sound and display the alarm information on the display module. The error handling design mainly includes fault detection and fault alarm. When the system fails, the buzzer will alarm and display the error information on the display module. The system control design includes system startup, control and shutdown.
Material Selection
The main materials used in the smart smoke alarm system include the 51 single-chip microcomputer, PCB board, smoke sensor, temperature sensor, buzzer and display module. In
order to ensure the stability and reliability of the system, high-quality and reliable raw materials need to be selected.
The chosen smoke sensor is a high-sensitivity and high-precision smoke sensor, which can accurately detect changes
in smoke concentration. The temperature sensor is a
thermistor type temperature sensor, which can accurately
detect the ambient temperature changes. The buzzer is a high-decibel buzzer, which can output loud alarm sound. The
display module is a 16x2 LCD display module, which can
display alarm information.
Conclusion
In this paper, a smart smoke alarm system based on 51 single-chip microcomputer is designed and implemented. The system can monitor the smoke concentration and temperature changes in the environment, and give an accurate alarm signal. The system uses high-quality raw materials and has high reliability and good practicability. The intelligent smoke alarm system can effectively improve the safety factor of the living environment, and is of practical value in the field of fire safety.。