MOTION INTRUSION DETECTING SYSTEM WITH LIGHT AND ALARM  

Abstract

This research work deals with the design and construction of an automatic triggered bell ringer circuit with LED lighting system to light up on the intruder. The light resistivity is internally configured infrared beam directly and projected permanently outward from the motion sensor module. The movement detected on the motion sensor module triggers a buzzer alarm and once this happens, the resistance tends to infinity and voltage dropped across the internally base diode why the transistor are sensed at the output of the motion sensor module. The major components used are the comparator (LM358), timer (NE555) and voltage monitor (LM3914) etc.