ON DETECTING ACCEPTABLE AIR CONTAMINATION IN CLASSROOM USING LOW COST SENSORS

Abstract

In present scenario of the world, environmental pollution is one of the leading challenges. Most often
the educational institutes and organizations in developing countries suffer from polluted environment due to
overcrowded rooms, improper planning and poor infrastructure. Students/faculties in a classroom could suffer from
health issues due to prolonged exposure to such environment. On an average a student/faculty is exposed to such
environment for eight hours per day. A student/faculty could undergo physical as well as cognitive hazards. This paper
tends to detect the duration for which a classroom environment can be considered healthy for a given number of students.
In this system we use PIC16F877A microcontroller for controlling the working and different sensors such as oxygen
sensor, temperature sensor, gas sensor, RFID Reader, LCD Display.