A Simple Obstacle Counter Improved Upon to Work as an Intruder Detection System
Agrata Kumar, Jaswant Mann, Monika Nehra, Nisha Jangra, Sharda Vashsith · 2013
1 Abstract: This paper presents an obstacle detector/counter which is further improved upon to work as an Intruder Detection System. The project is framed to count the number of obstacles as well as to provide security against any intruder either at home or at the workplace. The basic principle of this work is that whenever the light falling on the Light Dependent Resistor (LDR) is obstructed then at that instant the count on the counter is incremented and this counts the number of obstacles which has passed the given check point. This task is accomplished by using a simple LDR, a BCD counter and a seven segment display. This portion of the circuit is further incorporated with a buzzer and a light (LED) which is used to indicate an intrusion by the intruder and the system is improved to work as an Intruder Detection System.