The Detection System of Automobile Interior Environment Based on Single Chip Microcomputer

With the development of the country and the continuous increase of GDP per capita, people enjoy life more and more, and at the same time pay more and more attention to the quality of the living environment around them, and factors such as changes in temperature and humidity in the air and the size of dust concentration will increase. In order to ensure people’s health and quality of life, the research on detection system of automobile interior environment is of great significance. The detection system of automobile interior environment originally designed uses the STC89C52 chip as the main control processor, combined with temperature and humidity detection module, A/D conversion module, display module, alarm module, and Bluetooth module to achieve automatic detection of ambient temperature, humidity, alarm and other functions. The paper first analyzes the overall design scheme of detection system, and then elaborates the design and implementation of detection system from both hardware and software aspects. The expected function of the system is to detect the temperature, humidity and PM2.5 values in the internal environment of the car, and to transmit and display the detected results on the LCD1602 liquid crystal display. Wireless transmission can be achieved through the HC-06 Bluetooth module, and the module needs to be used with mobile devices. If the detected PM2.5 value is not in the limited range, the buzzer will sound, accompanied by the LED light. The research results show that the automobile interior environment detection system designed in this paper is innovative. Compared with the existing domestic products of the same type, it has the advantages of simple operation, stable system and fast response speed, and basically meets the main functions of the design requirements and has certain practical application reference value.