Design and Implementation of a PM2.5 Dust Detection System Based on ZigBee

According to the requirement of air quality (dust) detection in classroom and laboratory, a dust concentration detection system is designed. The system is based on bidirectional wireless communication technology and uses single chip computer as processor. It collects the concentration of dust particles in the air and air temperature and humidity information using DSM501 sensor system. In this paper, a wireless sensor network for monitoring dust concentration and environmental temperature and humidity is established by Zigbee technology. The detected information is transmitted to the host computer through wireless network for analysis and statistics. The PM2.5 concentration, temperature and humidity in classroom or laboratory air are measured and displayed. The comparative experiment proves that the consistency of the instrument is not more than 25%.