Air Quality Monitoring and Controlling System Using Dust Sensor.

Ultrafine particles smaller than 2.5 μm in diameter are mainly produced from burning fossil fuel and aeolian dust. They deteriorate air quality and health as they can accumulate in the distal airways and gas-exchange regions of the lungs. Thus, it is necessary to monitor the concentration of ultrafine particles in the air accurately and continuously. Therefore, we developed an automatic particulate matter monitoring system with a dust sensor, actuators, and a microcontroller. The system is connected online to the web to monitor the concentration in real time and provide an alert when the concentration exceeds a safe range. [ABSTRACT FROM AUTHOR]