Download laser burglar alarm system

(College logo)
Project synopsis on
LASER BURGLAR ALARM SYSTEM
Under taken by:
Name 1
Roll no. 1
Name 2
Roll no. 2
Name 3
Roll no. 3
Name 4
Roll no. 4
ABSTRACT
In any highly secured area or even in your own house, the main focus is
on the security. As the data of any organization is very important to
them, therefore best security measures are used to protect it.
This project is designed to stop or trap any burglar entering in the
house or any secured area. This project uses laser and photo resistors
along with mirrors to protect the house from any intruder entering the
premises.
Only the authorized personal can enter after entering a secure code
which disables the laser trap.
All objects with a temperature above absolute zero emit heat energy in
the form of radiation. Usually this radiation isn't visible to the human
eye because it radiates at infrared wavelengths, but it can be detected
by electronic devices designed for such a purpose.
ABOUT LASER TECHNOLOGY
A laser is a device that emits light through a process of optical
amplification based on the stimulated emission of electromagnetic
radiation. The term "laser" originated as an acronym for "light
amplification by stimulated emission of radiation". A laser differs from
other sources of light in that it emits light coherently. Spatial coherence
allows a laser to be focused to a tight spot, enabling applications such
as laser cutting and lithography. Spatial coherence also allows a laser
beam to stay narrow over great distances (collimation), enabling
applications such as laser pointers. Lasers can also have high temporal
coherence, which allows them to emit light with a very narrow spectrum,
i.e., they can emit a single color of light. Temporal coherence can be used
to produce pulses of light as short as a femtosecond.
Among their many applications, lasers are used in optical disk
drives, laser printers, and barcode scanners; DNA sequencing
instruments, fiber-optic and free-space optical communication; laser
surgery and skin treatments; cutting and welding materials; military
and law enforcement devices for marking targets and measuring
range and speed; and laser lighting displays in entertainment.
WORKING PRINCIPLE
Whenever any person enters the secure zone, he needs to cross the laser
trap. The laser diode emits laser light which after reflecting the mirrors
falls onto the photo resistors.
If anyone tries to cross the laser trap, he first needs to disable it by
entering the right security code in the keypad matrix. If any burglar tries
to cross the trap, the laser sight will be cut and resistance of photo
resistor will become high and the microcontroller detects this change
and thus activates the alarm.
BLOCK DIAGRAM
COMPONENTS REQUIRED
 HARDWARE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Arduino Uno
Connecting wires
Diodes
Capacitors
Jumper wires
LCD Screen 16*2
9V Battery
Buzzer
4*4 Keypad matrix
Laser Module
Photo resistors
 SOFTWARE
1.
Arduino IDE
APPLICATIONS AND FEATURES
 This project costs very less as compared to other home security
projects
 The project provide full perimeter fencing security
 The project does not require any special sensors for its operation
 The making of the project is much simple that any other project of
the home security due to no special sensor used.
Apart from the above, there are many applications of laser itself which
are as follows:




Military: Marking targets, guiding munitions, missile defense, electrooptical countermeasures (EOCM), alternative to radar, blinding
troops.
Law enforcement: used for latent fingerprint detection in the forensic
identification field
Research: Spectroscopy, laser
ablation,
laser annealing,
laser scattering, laser interferometry, lidar, laser capture micro
dissection, fluorescence microscopy, metrology.
Product development/commercial: laser printers, optical discs (e.g.
CDs and the like), barcode scanners, thermometers, laser pointers,
holograms, bubble grams.
REFERENCES
http://www.circuitsgallery.com/2012/09/home-security-alarm2.html
https://en.wikipedia.org/wiki/Laser
https://www.rp-photonics.com/lasers.html
https://lasers.llnl.gov/education/how_lasers_work