Design of Air Quality Detector Based on STM32

Abstract

The rapid development of society and the great progress of industry have improved people's material life, but at the same time they have brought serious harm to people's lives and severely polluted the human living environment. For example, in recent years, smog has exploded across the country. There are many reasons for smog, such as coal mining, automobile exhaust, industrial exhaust emissions, and incineration of waste crops. The haze contains a variety of fine particles that are harmful to the human body, which can have a significant negative impact on human health. At the same time, the haze weather will affect traffic safety and easily cause traffic jams. In serious cases, it will cause traffic accidents due to blurred vision of drivers. We need to pay great attention to air quality. Therefore, this article proposes an air quality detector. This design uses the smallest single-chip microcomputer system with STMicroelectronics' STM32F103RCT6 as the core. It consists of GP2Y1010AU dust sensor, TFT liquid crystal display module, sound and light alarm module, zigbee wireless communication module. composition. The AD converter converts the data collected by the sensor in real time and transmits it to the single-chip microcomputer. After the calculation and processing of the single–chip microcomputer, the air quality is displayed on the LCD screen. At the same time, the dust concentration in the air is transmitted to the QT–based host through the wireless transmission module Machine, display the air quality on the host computer software, and draw the collected dust concentration as a line chart, draw the table to display the received data, and then save the data as excel and add it to the database for storage while facilitating data query. If the dust concentration in the measurement space is greater than the set dust concentration, the buzzer and light–emitting diode on the lower computer will issue an audible and visual alarm, and the upper computer will issue a dust concentration warning.