Microcontroller based Electronic Eye Controlled security System

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Electronic Eye Controlled
Security System

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Introduction
 The main aim of this project is used to provide security system for
cash boxes, lockers in malls, jeweler shops, homes and banks and
also to watch continuously if any person is visiting your home.
 Nowadays, automation is a developing technology. For instance, a
doorbell that continuously generates ringtones when an
unauthorized person visit your home.
Security System

Block Diagram
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Hardware Components
• Battery
• Slide switch
• LDR
• Ripple Counter IC
• Transistor
• Buzzer
• Relay
• Bulb
• Diode
• Transformer
• Capacitor
• Resistor
Security System

Resisto
r
 Resistor is a passive two - terminal electrical component that
implements electrical resistance as a circuit element.
 The ratio of the voltage applied across a resistor's terminals to the
intensity of current through the circuit is called RESISTANCE.
 The relation is represented by Ohm's Law :
Security System
V=IR

IC- CD4060
 IC- CD4060 is a ripple binary counter/divider.
 It consists of an oscillator section and 14 ripple carry
binary counter stages.
 The oscillator configuration allows design of either
RC or crystal oscillator circuits.
 A RESET input is provided which resets the counter to
the all O's state and disables the oscillator.
Security System

IC- CD4060 Features
 High Voltage Type (20V)
 Common Reset
 12MHz Clock Rate at 15V
 Fully Static Operation
 Buffered Inputs and Outputs
 Schmitt Trigger Input Pulse Line
 Standardized, Symmetrical Output Characteristics
 100% Tested for Quiescent Current at 20V
 5V, 10V and 15V Parametric Ratings
Security System

Description About Project
 This project is to design an Electronic Eye Security Controlled
System for homes and public places like banks, malls, etc.
 It uses a LDR sensor to sense the intensity of light and produces an
alarm for representing thefts, and also switches ON the lights.
 This electronic security system is placed inside lockers and cash
boxes.
 When an unauthorized person tries to open the locker door and
uses a torch light to find the valuable things, the torch light falls
on the electronic eye giving a signal to the buzzer.
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 It uses a 14 stage ripple binary counter to detect the intensity of light
through the light dependent resistor(LDR).
 The relay driver is connected with the binary counter to control the
different loads.
 The buzzer is attached to the circuit using a transistor to give an
indication to the users.
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 Whenever an intensity of light falls on the LDR then the resistance of
this LDR will decrease.
 Thus, the ripple counter triggers the transistors.
 Also, these transistors trigger the buzzer and load connected to the
relay to indicate a theft.
Security System

Workin
g  LDR senses the light intensity and generates an alarm for indicating
thefts and also turns ON the light.
 If the cash box is in closed condition, the interior will be dark.
 Hence in the dark, LDR resets CD4060 and it stops oscillating and
counting.
 So neither the buzzer sounds, nor the relay energizes, indicating
that the cash box is closed.
Security System

Workin
g
 If someone tries to open the door of the cash box and uses a torch
light to find the valuables.
 Then the light most probably from the burglar's touch falls on LDR
fitted into the cash box.
 As a result, LDR conducts and goes low.
 Hence pin 14 of IC1 goes high for two seconds after the door is
opened and goes low for another 2 seconds.
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Workin
g
 So the buzzer sounds for two seconds and then falls silent for the
following two seconds.
 This cycle repeats until the cash box is closed.
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Circuit Operation
 Initially, connect the circuit as shown in the circuit diagram on the
bread board.
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 Now connect the supply voltage of 9v using battery.
 Place the LDR in light. You can observe no sound is produced from
the buzzer.
 Place the LDR in dark, buzzer starts ringing. LED connected to the
buzzer also starts blinking.
 As the intensity falling on the LDR increases, sound produced by the
buzzer increases.
Circuit Operation
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Applications
 Mainly used in security applications.
 Door bell circuits.
 Garage door opening circuits.
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Advantages
 Used to provide Security.
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 Light is required in front of door bell.
 If any person come in & out then the bell will ring.
Disadvantages
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Future Scope
The future scope of this project can be augmented by implementing
it by using a GSM modem and a microcontroller. The GSM modem
can be interfaced to the microcontroller to send and receive SMS to
the user in case of burglary.
Security System

Conclusion
Electronic Eye controlled Security System, device utilizes binary counter as
input. It has been successfully demonstrated that, this will serve as a device
for providing security. It provides the user with efficient and reliable
security system for houses, malls etc; that supports the use of a binary
counter which sense the intensity of light through LDR and activating the
buzzer indicating a theft.
Security System

Microcontroller based Electronic Eye Controlled security System

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