A Wireless Sensor Network-Based Testbed for Characterizing the Dispersion of Total Volatile Organic Compounds in an Enclosed Space

An indoor air quality monitoring system can provide information about the air quality in enclosed spaces such as offices, and potentially prevent occupants from suffering illnesses due to staying in enclosed spaces, more commonly known as Sick Building Syndrome (SBS). Experiments were conducted to characterize the spread of Total Volatile Organic Compounds (TVOC) in a room, using ESP32-based sensor nodes were equipped with SGP30 and CCS811 TVOC sensors. This setup was used as a testbed to monitor pollutant concentrations at different points in 3D space. Discrepancies in the measurements between points showed that airflow has a large effect in reducing pollutant concentrations.