Post on 06-Apr-2018
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
3/19
Radio-frequency identification
is a technology that uses radio
waves to transfer data from anelectronic tag, called RFID tag
or label, attached to an object,
through a reader for the purpose
of identifying and tracking theobject.
8/3/2019 Rfid Tech. Ppt
4/19
One or more RF tags
Two or more antennas One or more interrogators
One or more host computers Appropriate software
8/3/2019 Rfid Tech. Ppt
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RFID API Software
(Communicates with the RFID Reader)
Customer-Specific
Application Software
Host Computer
Host Memory Space
Reader
Antenna
Application
Program
Interface
(API)
Application
Program
Interface
(API)
Components of an RFID System
8/3/2019 Rfid Tech. Ppt
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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 & sends back
modulated signal Antennas receive the modulated signal and send them to
the Reader
Reader decodes the data & results returned to the host
application
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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Tags can be read-only
or read-write
Tag memory can befactory or field
programmed and
optionally, permanentlylocked
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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No need for contact or line-of-sight
Can scan entire pallet at once
Greater speed
Low error rates
Reduced counterfeiting
Size a grain of rice
Ability to hold more data than bar codes Durability
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Cost Passive tags: 30-50 cents
Would be economically viable at 5 cents
Lack of standards Proliferation of multiple operating frequencies
Need for standard electronic product code (EPC)
Efforts by ISO and ANSI
Privacy Implications of staying active beyond checkout Kill switches
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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Access management
Tracking of goods and RFID in retail
Tracking of persons and animals
Toll collection and contactless paymentMachine readable travel documents
Smart dust (for massively distributed
sensor networks)
Tracking sports memorabilia to verify
authenticity
Airport baggage tracking logistics
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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RFID technology uses waves to automatically identifyindividual items. After sixty years of development,RFID is being used in many fields.
However there are some hurdles needed to overcomebefore is becomes wide spread in the world .
One major problem is the high costs,
the other is privacy issue.
In the long run, the RFID technology,when perfected, would eventually be a
big help to human.
8/3/2019 Rfid Tech. Ppt
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8/3/2019 Rfid Tech. Ppt
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