1. Sources of air pollution and health effects People usually think　that these harmful substances (e.g., particulate matter (PM), nitrogen dioxide (NO2), sulfur dioxide (SO2), formaldehyde, carbon monoxide (CO), etc.) are emitted from factories or automobile engines,　which may lead to close the windows or open the air filter for quarantining the particles. Therefore, if the windows are closed, there is a risk of causing more damage on the human body. Moreover, since there is no information about the pollution sources, it may waste energy to turn on the air cleaner blindly. 2. Technical overview and superiority Our team has proposed an automatic air quality tracking system. With the wireless sensing modules and Internet of Things technologies, the proposed system is able to compare the concentration between sensing nodes to determine whether the pollution source comes indoors or outdoors, which can make right decisions on exclusions. In addition, based on the scope of application (e.g., home or a larger area such as hospitals, stores and other public places), the scale of the system can be flexibly adjusted on demand.

Air pollution, Wireless Sensor Networking, Internet of Things, Deep Learning