electronic eye controlled security system

1. ELECTRONIC EYE CONTROLLED SECURITY SYSTEM
INTRODUCTION
Electronic eye is also called magic eye. As the
automation is an emerging technology these days, justimagine a door bell
that automatically rings when a person visits your home. This also provides
security when any person is trying to enter into your home without your
permission. Electronic eye is a simple electronic device that continuously
watches if anyone is visiting your home.
ELECTRONIC EYE CONTROLLED SECURITY SYSTEM CIRCUIT
PRINCIPLE
The main principle of the circuit is to ring the door bell when there is any
person at the entrance. In order to detect a person, is used as the sensor.
light on the LDR determines whether a person is present or not. When there is
any object at the entrance, LDR is in dark and buzzer starts ringing and the
LED starts glowing.
COMPONENTS
1.7805 regulator IC
2.resistors(R1,R2,R3,R4,R5)
3.capacitor(C1,C2)
4.Transistor(BC 547-Q1,Q2)
5.Diodes(IN4007-D1,D2)
6.LDR
7.LED

2. ELECTRONIC EYE CONTROLLED SECURITY SYSTEM
8.Buzzer
9.Battery(DC 9V)

3. ELECTRONIC EYE CONTROLLED SECURITY SYSTEM
APPLICATIONS
1.This can be used in door bell circuit.
2.Electronic eye can be used in security applications.
LIMITATIONS
1.Light is required in front of door bell.
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