Ultra low power indoor air quality monitoring sensor network

This research aimed to measure the air quality of built environment continuously and provide a continuous stream of information for seamless controlling of HVAC in building automation systems. Further this ultra-low power design enables provide vital air quality information under emergency and hazardous conditions even without grid power for a reasonable time. The proposed system has carbon dioxide, carbon monoxide, propane and methane sensors. This network uses a hardware platform available in the market with industrial grade gas sensors to develop the sensor nodes. The concept was verified with actual parameter measurements under different real life situations. The results reveal that the domestic indoor air quality is extremely poor compared to what is expected for quality living environment.