Application of Pm2.5 Alarm System Based on Embedded Technology in Urban Air Pollution Monitoring

摘要: With the continuous improvement of people's living standard, people pay more and attention to environment. Air quality is an important indicator Haze problems cannot be under estimated. It has brought impact on survival development mankind. However, PM2.5 leading cause haze.PM2.5 characteristics small volume, strong activity easy carry viruses heavy metals, which been greatly affected by inhalation human body. Aiming at caused haze, this paper designs a alarm system, aims monitor situation urban air pollution. This uses STM32 MCU control system.PM2.5 sensor DSM501 used collect signal.LCD12864 liquid crystal display real-time value concentration current time. The speaker tricolor lantern are realize function limiting sound light alarm. system realizes monitoring index Experimental results show that good performance, convenient operation stable performance. in air, brings convenience life.