Implementation of a prototype air-quality detection network system with geolocation

The core of this paper is to present an example of use for a growing technology, which is Internet of Things (IoT), with an explicit, complete design and implementation of a custom prototyping embedded system capable of mapping air quality in multiple areas in real time. We designed the system for home use, but also to be mounted in a car or to be transported with the user everywhere, so that not only an area, but also an entire zone to be monitored. Our embedded system is developed on an ATMEGA328PB microcontroller. It combines on a single printed circuit board (PCB) a sensor for atmospheric particles (PM2.5 / PM10), one for measuring temperature and humidity (DHT22), a global positioning module (GPSGY-NEO6MV2) and a module for communications mobile (GSM-SIM800L). The GSM module is used to send measured data from sensors in real time, with precise location, to the server which allows access to monitor an environment through a web interface. The system counts the particles every second, the total mass estimated for PM1.0, PM2.5 and PM10 is averaged for the last 3 seconds and using the Internet of Things (IOT) protocol. The information is sent to the server along with data about temperature and humidity and coordinates received from the GPS module. This way, we provide a general idea of the PM readings in areas where the sensor has traveled.