Automatic AQI Monitoring System for Air Purifier Using Arduino

Abstract

For the air purifier an automatic Air Quality Index (AQI) monitoring system has been designed using Arduino Uno R3. Lots of impurities are available in the air which degrade our health and may leads to severe diseases. So, this system helps in detecting the impurities in the air with a help of ATmega328P chip and MQ-135 sensor. The sensor used for detecting the impurities available in the environment or in a room space based on defined permissible range of AQI values. This system detects the AQI values depending on three conditions. If the value of AQI value is ≤ 50 it lies under normal condition. If the value will rise up to 100 then it indicates the moderate zone but when it rises more than 250 it considered as hazardous zone and buzzers will on continuously. This leads to turn on the Air Purifier turn on automatically without human intervention. The module has been optimized and gets tested over Tinkercad software and its prototype is also developed using multiple electronics components and sensor.