부산대학교 도서관

Air pollution is one of the vital issues to ponder in current environmental situation as it has major impact on human health and environment. Real time monitoring of air pollution will help in calculating air quality index to issue health advisories as well as for taking necessary actions to meet standards. Air pollutants in the form of ground-level ozone and particulate matter have been the major pollutants in recent times. The proposed prototype in this paper deals with a smart Mongoose OS based monitoring system to monitor the harmful pollutants' concentration continuously. Mongoose OS is a cross-platform IoT operating system, which provides generic infrastructure layer for smart products and minimal foot print on edge device. As Monitoring is carried out uninterrupted, concerned officials get notified whenever a certain pollutant surpasses the threshold. Prototype is designed using cost effective low power ESP32 development board and appropriate sensors to monitor CO, CO 2 , NH 3 , Smoke particulates ($PM_{2.5}$) and Ozone. The values of pollutants (unit of measurement is PPM) captured by this prototype can be sent through message brokers to the cloud server set up using Losant IoT platform, by configuring it as Wi-Fi access point. PPM values of pollutants are then displayed on to losant device logs through MQTT protocol. Losant device ID, API access tokens play a key role in providing access to the users on Losant.