A smart sensor system for air quality monitoring and massive data collection

Air pollution has been a global challenge for environment protection. Effectively collecting and scientifically visualizing the air quality data can better help us monitor the environment and address related issues. This article presents a smart sensor system for air quality monitoring which consists of three units: the smart sensor unit, the smartphone, and a server. The smart sensor unit utilizes sensors to sample air quality data anytime and anywhere, and sends the data to the smartphone through Bluetooth. The smartphone displays the data to user and relays the data to the server for processing, visualization, air quality monitoring, and web publishing. The air quality data the prototype system is capable of measuring PM2.5, CO, CO₂, temperature and humidity, and detecting other hazard gases.