International Journal of Research in Electrical, Electronics and Communication Engineering ISSN: 3107-8907 (Online)

Authors:- Dheeraj Malhotra, Rahul Kashyap, Alok Kumar

Abstract:- This article describes the design and implementation of a comprehensive digital security system with the goal of providing a 24-hour digital watchdog for organisations such as banks, schools, churches, private residences, and anything else that requires monitoring. This goal was achieved through the application of infrared and digital technology. An infrared (I.R.) diode transmits the signal, which is collected and decoded by the receiver circuitry. Obstruction of the line of sight (within 8 metres) resulted in a digital display of the trespassed zone. This also sets off an alarm, both of which are set to last 30 seconds. To ensure that only people activate the alert, the transmitters and sensors should be placed at least one metre above the ground.

Keywords:- Display, Decoder, infrared, latch, timer.