RFID or Radio Frequency Identification
is a technology that makes use of wireless communication for establishing the
identify of an object. RFID is the term that is used for describing a system
that transfers the data or identity of a certain object wirelessly by making
use of radio waves. This identity or information regarding an object is
available in the form of an exclusive serial number or Electronic Product
Code. The use of RFID card India offers wireless identification of assets, books and
people. The technology involves attaching an RFID tag to a certain object that
needs to be tracked. The tag attached to the object contains information
regarding the same.
Different
Varieties of RFID Tags
An RFID card supplier in India deals in
different varieties of RFID tags, readers, labels and cards. There are
different versions of these products that operate at varied radio frequencies.
The read environment and the requirements of a business are the two most
important factors determining the choice of radio frequencies. However, there
are three important frequency bands used for RFID and they are as follows:
· High
Frequency- The high frequency bands are available at 13.56 MHz and they are
used where read and medium read rate ranges up to around 1.5 meters are acceptable.
High frequency is highly advantageous mainly because it is not susceptible to
interferences that occur due to the presence of metals and water.
·
Low
Frequency- These come in a range between 125 and 134 KHz. The low frequency
bands are used for access control. They are also the most common tags for vehicle in India. Bands with
low frequency are also used in school attendance systems.
·
Ultra-High-Frequency-
The ultra high frequency bands come in a range between 850 MHz and 950 MHz.
They provide the longest read range of around 3 meters along with high reading
speeds.
Active
and Passive RFID tags
Then there are active RFID tags and
passive RFID tags. The active tags are ones that run on batteries. They carry
out the task of broadcasting signals to the reader and transmitting data over
great distances. The active RFID tags are a bit more expensive in comparison to
passive RFID tags. They are majorly used for tracking high value products like
large containers and vehicles. One common application of these tags is in
shipboard containers. On the other hand, the passive RFID tags are not battery
powered. They get their energy from the radio frequency waves that are
transmitted by the readers.
For more information visit at http://www.etsrfid.com
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