Indoor air quality monitoring using wireless sensor network

Abstract

Indoor air quality (IAQ) is a term describing the air quality of a building; especially it refers to the health and comfort of building occupants. It refers to the nature of the conditioned air that circulates throughout space/area, where we work and live in. IAQ can be affected by microbial contaminants (mold, fungus) which largely depend on temperature and humidity condition of a room, gaseous pollutants (including carbon monoxide, carbon dioxide, volatile organic compounds etc) and dust particles or aerosols. These pollutants can induce adverse health effects to building occupants. To avoid such adverse effects, an air quality monitoring system is utmost required. This paper aims to develop a wireless solution for indoor air quality monitoring. The proposed solution is to measure the environmental parameters like temperature, humidity, gaseous pollutants, aerosol/Particulate Matter to determine the environmental health of an indoor space. It also represents that in terms of Air Quality Index (AQI) and gives environmental information as input for controlling HVAC (Heating, Ventilation and Air Conditioning) system in a smart building. A toolkit has been developed to view the live air quality data of deployed regions in the form of numbers and graphs.