“Academic Skill Presentation” NAME :- RUPESH Y. KADAM . STD. :- DETE 3rd YEAR / A .

SPN NO. :- 1103057 .COLLAGE :- ST. XAVIER’S TECHNICAL

INSTITUTE

Guided By:Miss. Surbhi Gavshinde

St. Xavier’s Technical Institute

What is RFID?

Radio Frequency Identification

Identification system that consists of chip-based tags and readers

Data is stored and retrieved remotely using radio wavesOnboard sensorsProduct information

RFID System ComponentsRFID Tag

TransponderLocated on the object

RFID ReaderTransceiverCan read and write data to Tag

Data Processing Subsystem

TranspondersConsists of microchip (tag) that stores data

and antenna.Active transponders have on-tag batteries.Passive transponders obtain all power from

the RF interrogation signal of reader.Active and passive only communicate when

interrogated by transceiver.

TransreceiverConsists of an RF module, a control unit, and

a coupling element to interrogate tags via RF communication.

Also have secondary interface to communicate with back-end systems.

Reads tags located in an external environment and are obscured from view

Data Processing SubsystemBackend SystemConnected via high-speed networkComputers used for business planning (ERP)Database storageCan be as simple as a reader attached to a

cash register

Operation TypeFull and half duplex systems

Transponder’s response is broadcast when the reader’s RF field is switched on

Sequential procedureReader’s RF field is periodically switched offLoss of power during breaksNeed auxiliary capacitors or batteries

Data CapacityNormal range is from a few bytes to several

kilobytes1-bit transponders

Useful for simple monitoringLow cost

Read only vs. writeable Electrically erasable programmable read-only

memory (EEPROM)High power consumptionLimited number of write cycle

Ferromagnetic random access memory (FRAM)Lower power consumption

Static random access memory (SRAM)Rapid write cyclesNeeds power supply for data retention

Power SupplyPassive

Require no internal power source or maintenance

Tag reader is responsible for powerActive

Require a power sourceMore reliable and efficient in rugged

environments

Active RFID TagsBattery Powered tags

Have much greater range – 100m Hold much more information – Kbytes Can integrate sensing technology

Temperature, GPS Can signal at defined time Multiple tags can be recorded/read at once

Used for higher value items Shipping containers Electronic assets

Cost between $20 and $40 per itemLife between 2 – 4 years

Technical details

High Frequency

Some RFID readers

RFID readers Contd.

Some RFID tags

ApplicationsKeyless entryElectronic Product Code (EPC)Proximity cards

Application Contd.Payment tokens

Contact-less credit cardsAutomatic toll-payment

Euro banknotesPassports

Application Contd.LibrariesSecurity device

Bookstores

More ApplicationsAnimal and human implantation

AvidPet-IDVeriChip

RFID-privacy legislationREAL ID Act

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