rfid radio frequency identification
Post on 23-Feb-2016
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RFIDRadio Frequency Identification
Groups 23 & 24
What is it?Radio frequency identificationSmall electronic device consisting of a
microchip or antenna containing up to 2 KB of data
Equivalent to a bar code, magnet on a credit card, or an ATM card
Must be scanned for information to be obtained
More efficient than bar codesMay work efficiently up to 20 feetSource: www.technovelgy.com
How it Works?RFID tags receive and send information through the
use of radio waves.The data collected from the tags is passed through
wireless networks to the main computer network.The RFID tag is programmed with informationIt uses an antenna of which puts out a radio-
frequency signalsLife span of RFID is extremely long(Decades)due to
the use of no batteriesRFID takes 100 milliseconds to read
www.technovolgy.com www.Zebra.com
History of RFIDRFID technology has been around for over 50
yearsIt’s been too expensive and too limited to be
practical for many commercial applications.In the 1970’s developers, inventors ,
companies, academic institutions, and government laboratories were actively working on RFID, and notable advances.
The 1980’s marked the time when RFID started to be implemented for use in transportation, personnel accesses, and animals.
www.transcore.com
RFID Until Now There are two main reasons why RFID technology has
been overshadowed by other technologiesFirst reason is most companies want to use UHF (Ultra
High Frequency) technology because it offers a longer read range UHF technology is a relatively new technology
Second reason is the issue of cost, RFID readers use to cost around $1,000+, and each product item needed an ID tag
Companies would need thousands of readers to cover all of their factories, warehouses, and stores
So the practicality for using RFID was irrelevant since the cost was greater than the return
www.rfidjournal.com
RFID Tags Vs. Bar CodesBoth are different technologies and different
applications, which can overlapRFID tags do not require a line of sight to be read, but
are read as long as they are within range of the readerA down fall they do have is that if an item is ripped or
soiled it is unreadableThis technology could be used to speed up self service
lanes at retail stores and to reduce theft as wellRFID tags will coexist with bar codes for years to come
because bar codes are inexpensive and easy to usewww.rfidjournal.com
RFID TagsEach tag has a microchip that can store a unique
serial number for any specific product manufacturerIf they can be made cheap, it can solve many
problems with bar codesRadio waves can travel through most nonmetallic
materials so the RFID tag can be placed inside the package for durability and protection from weather
RFID tags were fairly expensive (20 cents each) the price has been reduced to 5 cents today and will continue to drop
www.rfidjournal.com
RFID Reader Information The reader simply reads the serial number in
the RFID tags It can operate at different frequencies …
Low frequency ( less than a foot)High frequency ( within 3 feet)Ultra high frequency ( within 20 feet)With the help of batteries it can be read from a
distance of 300 feetThe reader is the medium between the RFID
tag and the main computer systemwww.rfidjournal.com
AdvantagesInventory Efficiency – because line of sight is not
required to read RFID tags, inventory can be performed in a highly efficient method
Return on investment- Though the cost may be high at the initial setup, the total cost of ownership will go down over the years and provide a ROI
Cuts down time spent on scanning items at checkout
RFID is able to track every item since each item has its own specific serial number
www.idautomation.com
Disadvantages Is expensive compared to the Bar Code, due to the embedding
of electronic components in the tag. However, with advanced techniques it is possible to reduce the size, and the weight of the tags
Security Concerns – Because RFID is not a line of sight technology like bar-coding, new security problems could develop.
High cost - Because this technology is new, the components and tags are expensive compared to barcodes. In addition, software and personnel support are needed to install and operate the RFID reading systems (in a warehouse for example) may be more costly to employ.
www.idautomation.com
What Can RFID Be Used For?• A chip the size of a grain of rice can be placed under the skin of a dog to track it if its lost• Anti theft tags on clothing prevent stolen goods•Some shipping companies
use RFID to keep track of large shipping containers and equipment•RFID allows for IPASS to pay tolls at highway speeds
Uses In IndustryThere are three main uses of RFID
technology in industry’sRFID technology can track work-in-progressJust-in-time inventory Improve shipping accuracy
It has also helped prevent internal shrinkage throughout the company
www.rfidjournal.com
RFID IssuesPossible health risks with electromagnetic
wavesLow frequency
Massive lay off of workersLess jobs for less skilledMore skills necessary to perform
Improvement of worker safetyBadge will allow only certain people accessCould become RFID certifiedwww.rfidjournal.com
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