surya - prince presentation
TRANSCRIPT
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Photonic Opto Electronic CircuitsPhotonic Opto Electronic Circuits
Discovering Deep into the Rubbles
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Bio-Inspired Motion Detection SystemBio-Inspired Motion Detection System
This is mainly intended to help people whoare victims of any catastrophe
It includes the identification of people who
are alive only and the number of peoplewho are alive is obtained.
This information is useful during rescueoperations
Many lives could be saved easily and thisproject is also quite cheap when comparedto its use
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ConstitutionConstitution
1. RF transmitter and receiver
2. PIR sensor
3. PIC
4. LCD display
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PIR sensorPIR sensor
APassive Infrared sensor (PIR sensor) is an
electronic device which measures infrared light radiating
from objects in its field of view. PIR sensors are often
used in the construction ofPIR-basedmotion detectors
(see below).Apparent motion is detected when aninfrared source with one temperature, such as a human,
passes in front of an infrared source with another
temperature, such as a wall.[1]
All objects emit what is known as black body radiation.This energy is invisible to the human eye but can be
detected by electronic devices designed for such a
purpose. The termpassive in this instance means the
PIR sensor does not emit energy of any type but merely
passively accepts incoming infrared radiation.
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The design enables the
construction of lenses of
large aperture and short
focal length without the
weight and volume ofmaterial which would be
required in conventional
lens design. Compared
to earlier lenses, theFresnel lens is much
thinner, thus passing
more light
FRESNEL LENS
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PIR
sensor
PIC MC
Unit 1
RF
transmitter
RF
receiver
PIC MC
Unit 2
Digital
Outputs
Alarmoutput
Visualalert
LCD display
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PIR sensor signal conditioning circuit: block
diagram
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A PIR sensor works by sensing the difference in infra-red radiation
between one sensing element and another
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Why Use a PIR SensorWhy Use a PIR Sensor
While a number of technologies for motion detectionexist, including ultrasonic and microwave radiationsensors, the PIR sensor is popular for its ease-of-setupand high performance. In addition, PIR sensors areinexpensive and draw little power.
Future Electronics expects the rate of adoption of P
IRsensors to grow fast, with applications such as
surveillance and alarm systems, as well as power savingdevices, driving increased usage.
Future Electronics, a broad line component distributor,can supply every component required in a PIR sensor
system, including PIR sensors, lenses, discretecomponents, microcontrollers and PSoC devices. FutureElectronics FAEs can provide customers with technicalsupport in the implementation of PIR sensor systemdesigns
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Cycle DiagramCycle Diagram
Rescueoperation
IRRadiation
From Humans PIR sensor
Rf transmitterto receiver
Count of people
or image
Process of Identification
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The ProcessThe Process
PIR sensor RF transmitter &
Receiver
PIC and LCD
display
This sensor picks up
signals from livehumans only.
Humans emit IR
radiation at a
wavelength of(8-14)
micrometers.
Only this range is
picked up by thesensor
The signals from thesensor is transmitted
using a radio-frequency
transmitter and is
received using a radio-
frequency receiver
The PIC is a
microcontrollerIC
(IC 16877).Its advantage is that, it
has anADC and a built-
in memory
It is interfaced to an
LCD display
The head count of
people who are alive isshown
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Major ApplicationsMajor Applications
Sensing the
Presence of
A human &
Hence used
In Surveillance
System
Identifying the
presence of
life in theCircumference
of the earthWhen interfaced
With a dig image
Processing card,
the image could
be captured &
Hence used inHighly secure
areas
Can also beUsed in
protected zone
Areas such as
Military zones
&Sanctuaries
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ConclusionConclusion
Thus, this system plays a vital role in
many fields and it has vast applications in
electronic oriented research areas and in
defense purposes. Now-a-days, research of extra-terrestrial
objects are also carried out by this system
because of its reliability and effectiveness. In future, this system would of major
importance in many fields.
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