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BY: SOMESHWAR SINGHEC 3RD YEAR

0802831094

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Table of contents

RFID-What it is?

History of RFID

Components of RFID

Block diagram of RFID system

sequence of communicationComponents of RFID(Comparison)

Issues and concerns

References

Use of RFID

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.

Radio-frequency identification (RFID) is an automatic

identification method, relying on storingand remotely

retrieving datausing devices called RFID tags or

transponders.

RFID (radio frequency identification) is a technology that

incorporates theuse ofelectromagnetic or electrostatic

coupling in the radio frequency (RF) portion of the

electromagnetic spectrum to uniquely identify an object,animal, or person.

An alternative to bar code.

RFID-What it is?

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Invented in 1948 by Harry Stockman.

Initial application was during World War II-The UnitedKingdom used RFID devices to distinguish returningEnglish airplanes from inbound German ones. RADARwas only able to signal the presence of a plane, notthe kind of plane it was..

Came into commercial use only in 1990s.

Invented in 1948 by Harry Stockman.

Initial application was during World War II-The United

Kingdom used RFID devices to distinguish returning English

airplanes from inbound German ones. RADAR was only able tosignal the presence of a plane, not the kind of plane it was.

Came into commercial use only in 1990s.

History of RFID

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Components of RFID

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Tag

Insert

Antenna Reader

Firmware

Customers

MIS

Host

Application

Software API

TCP/IP

Power~

Asset

Asset/Tag

RFID System ComponentsRFID System Components(block diagram)(block diagram)

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Sequence of CommunicationSequence of Communication

Host Manages Reader(s) and Issues Commands Reader and tag communicate via RF signal

Carrier signal generated by the reader (upon request from

the host application)

Carrier signal sent out through the antennas

Carrier signal hits tag(s)

Tag receives and modifies carrier signal

Antennas receive the modulated signal and send them to

the Reader

Reader decodes the data Results returned to the host application

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Active RFID Tags

.Battery powered tags

-have much greater range -100m

-Hold much information in Kbytes

-Can integrate sensing technology-Temperature ,GPS

- Can signal at defined time

- Used for higher value items

-shipping containers

-electronics assets

- cost between $20 to $40 per items

- life between 2-4 years

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Passive RFID Tags

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Active RFID passive RFID

Tag power source internal to tag Energy transferred using

RF from reader

Tagbattery Yes No

Availability of power reader Continuous Only in the field of

Required signal strength very low very high

To tag

Range 100m 2-3m or less

Data storage up to 128 Kbytes 128 bytes

Multi tag reading 1000s of tag recognized few 100s with in 3mof reader

Components of RFID(comparison)

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Components of RFID

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Issues/Concerns

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Use of RFID

Used whereunique identification is needed.

RFID is used in library.

Replacing barcodes.

Passport in UK , USA,FINLAND.

Sensors to sense the temperature , food quality

movement , radiation.

Airports BaggageTracking.

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Benifits of RFIDBenefits of RFID

References

http://www.scribd.com/doc/33647920/RFID-Report

http://www.dvs.tu-darmstadt.de/publications/pdf/rfidsem_techreport.pdf

www.seminarprojects.com/tag/rfid-technology-seminar-report

http://www.scribd.com/doc/25981496/RFID-Technology

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