Abstract:
The aim of the project "Air Quality Monitoring” using low-cost sensor is to measure the air
quality index after measuring the concentration of air pollutants in a particular area and display
the results on mobile application. The proposed system architecture integrates these sensors
which are capable of measuring key air quality parameters, including particulate matter (PM),
carbon monoxide (CO), and nitrogen dioxide (NO2). These sensors wirelessly transmit the
collected data to a LoRaWAN gateway, which serves as a relay for the Helium network. The
Helium network, functioning as a decentralized infrastructure, ensures secure data
transmission and storage. The main feature of the project is to develop a mobile application
that displays the air quality index derived from the measured pollutant concentrations using
sensors. The application serves as user-friendly interface, allowing users to access real-time
air quality information and make decisions regarding their health and well-being
