Personal electronic systems for citizen measurements of air quality

This paper addresses the development of a series of miniaturized wireless sensing modules for a personal use in air quality detection. The proposed prototypes have been developed as an instrumentation system for different commercial gas sensors: analog gas sensors (MiCS-4514, MiCS-5526 and MiCS-5914 from SGX-Sensortech) and digital gas sensors (BME680 from Bosch Sensortech, CCS811 from Cambridge CMOS (ams), iAQ-Core from AppliedSensors (ams) and SGP30 from Sensirion). The architecture of the electronic system is based on the use of a microcontroller, combined with the use of the appropriate conditioning system for the gas sensors, a power supply and battery charger and a Bluetooth communication module.