Technology
What is RFID?
Radio Frequency
IDentification (RFID) is a means of identifying items by radio
frequency transmissions. For identification purposes the identified
item has to carry a Transponder or a Tag attached to it, that will
respond with an RF identifying signal when interrogated by an
Interrogator or Reader. In addition to the identification data the
Tag can carry in its memory any additional useful information that
can be added to the identification as required by the specific
application. There are several key parameters that define the
performance of an RFID system:
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Operating Frequency - spectrum
allocation regulations
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Transmitted power
-
Tag power source
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Operational range
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Anti-collision capabilities or
coexistence of many Tags within Reader’s range
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Tag’s read/write capabilities and
memory size
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I/O options, and more.
In
recent years the RFID technology has made huge progress offering a
continuously growing variety of components with a wide range of
cost-performance. An RFID based system consists of three major
segments:
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Tags to be installed on controlled
assets for continuous and automatic data collection.
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Network of Interrogators (Readers) for
collecting the data from the Tags, and
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Application Software to organize and store the data, analyze data
for detecting operational events and process it for generating and
distributing performance reports.
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