Radio Frequency IDentification

wizzstuffingUrban and Civil

Nov 16, 2013 (3 years and 7 months ago)

71 views

“think
BIG
, start

small
and move
f
ast
,”


Groups 9 & 10


RFID Technology

http://www.labelingnews.com/2009/08/
rfid
-
think
-
big
-
start
-
small
-
move
-
fast/

R
adio
F
requency
ID
entification


A
term used to describe a system that
transmits the identity of an object or
person wirelessly, using radio waves.


Technology used to receive
informative data







Sources: http://www.aimglobal.org/technologies/rfid/what_is_rfid.asp

Components of RFID


RFID Tag (or transponder):


Consists of a microchip attached to a radio antenna


Used to store information about a product or shipment

date of
manufacture, destination or sell
-
by date


Can signal at defined time


Multiple tags can be recorded at once


Tag does not use a battery. It is powered by electromagnetic
fields used to read them


RFID Reader (Antenna):


Device that has one or more antennas that emit radio waves and
receive signals back from the tag.


The reader then passes the information in digital form to a
computer system.

http://www.rfidjournal.com/article/articleview/1339/1/129

Sources:

http://en.wikipedia.org/wiki/Radio
-
frequency_identification

Two types of RFID Tags


This system has its own power
source. The advantage of these
tags is that the reader can be
much farther away and still get
signal.


Smaller and Can transmit data
over a longer distance.


Tags are usually rewritable (tag
data can be rewritten and/or
modified)


Can be used on inventory boxes



Tags do not have a transmitter; they
simply reflect back energy (radio
waves) coming from the reader
antenna


Have a shorter communication range


Tags are generally read
-
only and as
such, once it is programmed with
data, that data cannot be modified


Can be used on livestock such as
sheep for identifying ownership


Active System

Passive System

Sources:

http://www.technovelgy.com/ct/Technology
-
Article.asp?ArtNum=2

http://www.rfidjournal.com/article/articleview/1337/1/129/

http://www.webopedia.com/TERM/P/passive_tag.html



How does it Work?


Radio signals go to the antenna
which activate the tag to read and
write data to it.


The reader emits radio waves, when
an RFID tag

passes through the
designated area, it detects the
reader's activation signal.


The reader interprets the data
encoded in the tag and the data is
passed to the host computer for
processing.


This computer network can provide
information about anything carrying
tags and their present status to a
computer user.


Sources:

http://www.technovelgy.com/ct/Technology
-
Article.asp?ArtNum=2

http://www.aimglobal.org/technologies/rfid/what_is_rfid.asp

Benefits & Disadvantages


Reduces labor and warehouse cost


Cuts labor intensive cost


Eliminates inventory error


Reduces loss and theft


Improves planning and forecast


Easier for customers to locate items


Customer satisfaction


Good communication throughout
supply chain



Costly


Active tags generally more
expensive


Collision


Confusion of being able to
differentiate data


Security


Fraud always a possibility


Privacy concerns


Personal information linked on
tags





Benefits

Disadvantages

Sources:

http://benefitof.net/benefits
-
of
-
rfid
-
technology/

http://www.ehow.com/list_6116737_advantages
-
disadvantages
-
rfid.html


RFID better than BARCODE?



RFID eliminates the need for line
-
of
-
sight reading that
bar coding is dependant on


High frequency RFID systems offer transmission ranges
of more than 90 feet


Bar code systems often require a person to manually
scan a label or tag to capture the data whereas RFID is
designed to enable readers to capture data on tags
and transmit it to a computer system

without needing
a person to be involved


RFID can read multiple tags which makes it faster than
barcode.




Sources:

http://www.webopedia.com/TERM/R/RFID.html

http://www.rfidjournal.com/article/articleview/1339/1/129/


Today


Inventory and asset tracking


Tracks where every item is


Animal tracking


Used for identifying ownership


Security and Access Control


Door lock systems


Library book management and security systems


Books location and checkout system


Airports


Baggage tracking


Individual tracking


Prisoners


Payment Systems


Tollbooths




Sources:

http://www.aimglobal.org/technologies/rfid/what_is_rfid.asp

http://www.buzzle.com/articles/rfid
-
library
-
management
-
system.html

http://www.youtube.com/watch?v=oG7juJLJIOE&feature=pyv&ad=4076504774&kw=RFID


RFID TODAY

1.
RFID tags are
applied by hand

2.
Pallets loaded
onto trucks pass
RFID readers

3.
RFID in Wal
-
Mart
stores record their
arrival

4.
Supply chain
manager tracks
shipment progress

5.
Information from
RFID readers can
determine
information about
products.

The World of Tomorrow



Easy Return:
no need of receipts for return


Smart appliances:

Your washing machine could choose its cycle
setting based on tag information in the items to be washed.



Personalization:
When clothing shopping hangers with items in your
size and preferred colors might light up.


Easy shopping:
Rent or buy items by easily walking out of store,
Payment device would come from the RFID carried inside your
pocket


Video: IBM RFID commercial:


http://www.youtube.com/watch?v=_xNhL39uD7I


Sources:

http://www.rsa.com/rsalabs/node.asp?id=2117