Design & implementation of an Air Quality Monitoring System for Indoor Environment based on Microcontroller

Indoor air quality is a very important parameter for living environments, which is closely related to people's daily work and health. However, nowadays, the environmental pollution, haze weather and other issues have become increasingly prominent. In this context, it is necessary to design an automatic detection device for monitoring the air quality in buildings. In this paper, an indoor air quality monitoring system was designed and implemented based on LPC2148 micro-processor by means of the sensor technology, embedded technology and communication technology. The system could simultaneously monitor a variety of harmful gases and monitoring gas and setting alarm values according to the requirements of the indoor environment, such as indoor temperature, humidity, formaldehyde and methane, as well as PM2.5. All of the measured data is transmitted to the remote server to process through Ethernet. The experimental results show that, the system works stably and has high accuracy, which has broad market prospect.