Security-Alarm using Arduino and laser engineering mini project.

1. AMMINI COLLEGE OF ENGINEERING
MINI PROJECT
DEPARTMENT OF ELECTRICAL&ELECTRONICS ENGINEERING
LASER SECURITY ALARM
FIRST REVIEW
PRESENTED BY:
SIBIN SHABU (30)
SUSEELAN (33)
VIPIN (37)
THRESHNA (35)
GUIDED BY:
Ms. SYAMALA PJ
Assistant Professor;

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Objective
Circuit that produce an alarm to indicate
unauthorized presence using laser light
System designed to protect specific areas and
personal properties
Significantly reduce manpower
Faster , easier and accurate protection

3. 3
introduction
 LASER-ray goes through long distance
without scattering effect and ray is almost
invisible
 Only radiation and incident point is visible
 Laser light is continuously focused on to LDR
 Someone crosses the laser path way, an alarm
will produce with blinking LED
 Duration can be controlled by timer IC

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BLOCK DIAGRAM

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Existing methods
Security using
AIR SENSOR(active infrared sensor )
 active infrared Detectors are using dual beam
transmission as structure
 one side with transmitter for emitting infrared ray,
the other side with receiver for receiving the ray
PIR SENSOR(passive infrared sensor)
 Doesn't emit the infrared ray, it receives the
infrared ray that is emitted by objects

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Features
 They Consume less power
 It is easy in construction
 It economical
 If any burglary happen people will alert
easily
 Low cost

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The problems that the project tries to solve :
 Large amount of crime
 Enormous amount of theft
 Insecure environments

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APPLICATIONS
Home security

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APPLICATIONS
Used in museums to protect the valuable things

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APPLICATIONS
Bank security

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WORK SCHEDULE
TO DO TASK EXPECTED DATE
Zeroth Review On 12/02/2016
Circuit design & purchasing of
components
On 18/02/2016
Circuit implementation (70 %) Before 01/03/2016
First review On 03/03/2016
Circuit implementation (100 %) Before 02/04/2016
Final review On 07/04/2016
Final report submission Before 11/04/16

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Circuit components
 IC LM358
 IC LM7805
 555 Timer IC
 LDR
 Laser light
 150 Ω, 10K Ω Resistor
 10K POT
 220μF Capacitor
 9V battery and connector
 LED

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IC LM358
 The LM358 is a low power dual operational
amplifier integrated circuit
 The abbreviation LM358 indicates an
8pin integrated circuit, comprising two
operational amplifiers at low power.

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IC LM7805
 A LM7805 Voltage Regulator is a voltage
regulator that outputs +5 volts.
 Pin 1 (Input Pin): The Input pin is the pin that
accepts the incoming DC voltage, which the
voltage regulator will eventually regulate down
to 5 volts.
 Pin 2 (Ground): Ground pin establishes the
ground for the regulator.
 Pin 3 (Output Pin): The Output pin is the
regulated 5 volts DC.

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555 Timer IC
 The 555 timer IC is an integrated circuit(chip)
used in a variety of timer, pulse generation, and
oscillator applications.
 The555 can be used to provide time delays, as an
oscillator, and as a flip-flop element. Derivatives
provide up to four timing circuits in one package.

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LDR
 A photoresistor(or light-dependent resistor, LDR,
or photocell) is a light-controlled variable
resistor.
 The resistance of a photoresistor decreases with
increasing incident light intensity; in other
words, it exhibits photoconductivity.

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LASER LIGHT
 A laser is a device that emits light through a
process of optical amplification based on the
stimulated emission of electromagnetic
radiation.
 LASER-"light amplification by stimulated
emission of radiation".

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150Ω resistor 10k pot 220μF
capacitor

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9v battery LED Buzzer

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Circuit diagram

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Reference
 www.circuitdigest.com
 www.edgefx.in
 www.circuiteasy.com

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