Construction and Performance Test of Automated Air Purifier Using Arduino UNO

Abstract

Indoor air pollution is a serious concern that negatively impacts the health conditions of the occupants ranging from minor to severe extents. In order to mitigate these health risks and at the same time boost productivity, air filtration systems are necessary. However, traditional systems are not energy efficient as they operate continuously, even at marginal concentrations of airborne pollutants within the buildings. These need to be manually turned on or off to stop filtration at marginal concentrations. This study is unique from the traditional systems as it addresses this issue by constructing a smart air filtration system that operates only when the air pollution levels exceed a certain threshold, as opposed to traditional systems that run continuously comprising of two fundamental units- a filtration unit and a control unit. Two sets of sensors were used for monitoring and comparing the air condition before and after filtration. Its performance was evaluated under varying concentrations of pollutants. The results indicate that it is a highly responsive system operating only when the pollutant concentrations are over a threshold AQI value of 74. The rest of the time it remains inactive thus serving as an energy-efficient apparatus by saving power consumption. The system achieved a maximum AQI reduction of 12.941%, rendering it as an efficient and sophisticated system for filtering indoor air and thus preventing health risks.