Surya - Prince Presentation

8/8/2019 Surya - Prince Presentation

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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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Surya - Prince Presentation

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