rfid presentation 1

8/8/2019 Rfid Presentation 1

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WHAT IS RFID?WHAT IS RFID?

An automatic identification method that relies onAn automatic identification method that relies on

storing and remotely retrieving data using devicesstoring and remotely retrieving data using devices

called RFID tags (or transponder).called RFID tags (or transponder). Can be incorporated into a product, animal or human.Can be incorporated into a product, animal or human.

Useful in purpose of identification & tracking usingUseful in purpose of identification & tracking using

radio waves.radio waves. Facilitates reading beyond line of sight of reader andFacilitates reading beyond line of sight of reader and

hence used over barcodes at many places.hence used over barcodes at many places.

An automatic identification method that relies onAn automatic identification method that relies on

storing and remotely retrieving data using devicesstoring and remotely retrieving data using devices

called RFID tags (or transponder).called RFID tags (or transponder). Can be incorporated into a product, animal or human.Can be incorporated into a product, animal or human.

Useful in purpose of identification & tracking usingUseful in purpose of identification & tracking using

radio waves.radio waves. Facilitates reading beyond line of sight of reader andFacilitates reading beyond line of sight of reader and

hence used over barcodes at many places.hence used over barcodes at many places.


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HISTORY OF RF IDENTIFICATION

1939- UNITED KINGDOM

(IFFF transponder)

1946-LEON THEREMIN

(covert listening device)

1948-HARRY STOCKMAN

(Communication by means of reflected

power)

1973-MARIO CARDULLOS(passive radio transponder with memory)

1983-CHARLES WALTON

(first patent by the name RFID)


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COMPONENTS OF RFCOMPONENTS OF RF--IDENTIFICATION SYSTEM:IDENTIFICATION SYSTEM:

An AntennaAn AntennaA transceiver (with decoder)A transceiver (with decoder)

A transponder (RF tag)A transponder (RF tag)


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READER TRANSPONDER

Reader can be hand held or fixed- mounted


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WORKING OF RF-ID SYSTEM

Antenna emits radio freq from 1 inch to 100 feet range

RFID tag when passes through the EM zone , it detects readers

activation signal

Reader decodes the data encoded on tags IC

These decoded data then passed to host computer for processing


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TYPES OF RF-ID

SYSTEMS

Low frequency system High frequency system

Freq range:-30-500 KHz

Short reading range

Low system cost

Used in animal

identification, assettracking , security access.

Freq range:-850- 950 MHz

and 2.4 2.5 GHz

Long reading range

High system cost

High reading speed Used in rail road tracking ,

automated toll collection


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TYPES OF RF-ID TAGSTYPES OF RF-ID TAGS

ACTIVE TAGSACTIVE TAGS PASSIVE TAGSPASSIVE TAGS

Powered by internal battery

Read/Write

Size up to 1 MB

Longer read range

Greater size, cost

Limited life(max. 10 years)

In adverse conditions

Power generated by reader

Read onlySize up to 32 to 128 bits.

Lighter

Shorter read range

Less expensive

Unlimited lifetime


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APPLICATIONS OF RF

IDENTIFICATION PASSPORTS

PRODUCT TRACKING

LAP SCORING IN RACES

ANIMAL IDENTIFICATION

INVENTORY SYSTEMS

HUMAN IMPLANTS

LIBRARY

SCHOOL AND UNIVERSITIES

ROAD TOLL MANAGEMENT

Human Implants

Electronic road pricing


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COMPARISON OF RFID & BARCODE

Beyond line of sight reading

Time /Speed of reading

Read/Write compatibility

No contact requiredRead through non-metallic substances

Work in challenging conditions

Wide range of automated data collection

As price of technology decreases RFID is becomingincreasingly prevalent. But highly unlikely to replace Barcode.


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LIMITATIONS WITH RFIDLIMITATIONS WITH RFID

y Privacy concerns

y Global standardization

y Open to exploits

y Passport Security

y Human Implants

y

RFID tag collisions


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SINGULATION THEOREM:

States that a reader identifies a particular tag only.

ZOMBIE RF TAG:

This tag is deactivated after leaving the store.


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REFERENCESywww.wikipedia.org

ywww.aimglobal.org

y

www.texasinstruments.comywww.rf-id.com


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THANK YOU !!

rfid presentation 1

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