ATTENDANCE COUNTER AND ROOM SECURITY MONITOR USING ULTRASONIC SENSOR

Abstract

This project aims to create a multifunction system in order to count the number of students being present in the classroom and also help maintain the building security. This prototype works when someone comes into the classroom within a distance range between 1 cm and 12 cm or within a distance range: 13cm-25cm when a person leaves the classroom. Arduino MEGA processes the information and sends it to the LCD for a display. When the classroom is empty because there is no session in progress, the ultrasonic sensor detects movements within a distance range: 1cm-12cm, meaning that someone is coming into the classroom. Accordingly, the security system buzzer that serves as an alarm turns on. Arduino along with an ultrasonic sensor can automatically count the number of people entering and leaving the room. Simultaneously, the system is capable of knowing the total number of people who remain inside the room and notifies the user through the LCD within a certain period of time. The system alerts the user in the event of the presence of unwanted persons who attempt to enter the class room beyond the specified time.