Design and Implementation of a Smart Air Quality Monitoring and Purifying System for the School Environment

Abstract

Students and teachers are exposed to harmful materials in the school where the students generate dusts when playing during the break time. Despite most schools adopting air purifiers in the classroom, the capability of the air purifier is not enough compared to natural ventilation. Therefore, this study proposed a smart air quality monitoring and purifying system for the school environment. The system consists of an outdoor air quality monitoring system, indoor air purifiers, and a server program running on PC. The proposed system allows teachers and students to choose when to use the air purifier or natural ventilation by comparing outdoor air quality and indoor air quality. In addition, the proposed air purifier system includes an intelligent operation that controls the speed of the fan and blower to make sure it does not generate noise that interfere with students in class. This paper also includes the performance evaluation of the air quality monitoring system. As a result, the system has less error than approximately 15% from the reference instrument.