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A Radio Frequency Identification (RFID) system is information technology that uses radio waves to locate assets and liabilities. RFID technology uses electrical and electromagnetic signals for the two-way non-contact transfer of information. They allow data to be written and read without being affected by the material of surface of the target object. RFID technology also works in rain, snow and other environments where bar code or optical scan technology would be useless. Its main attributes are that it does not require a line of sight to be ‘read’ |
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A
RFID System comprises of three main elements: |
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Tag |
Middleware |
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Reader/Writer |
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A
Tag houses the intelligence and has an Inlay (which
is the antenna), a unique Identifier Number (conforming
to a Global Standard) and Read/Write Data Blocks. |
When
the RFID tag passes through the electromagnetic zone emmitted by the
reader/writer it detects the reader/writers' activation signal The
reader/writer decodes the data encoded on the tags integrated circuit
chip and the data is passed via "middleware" to the host
computer. The computer determines the required actions and instructs
the reader, which in turn transmits data back to the tag. |
The
interrogator, or Reader/Writer is an antenna packaged with a transceiver
and a decoder, which emits a signal to the tag to enable information
to be read from, and written to the tag. All Reader/Writers have the
same basic architecture: antenna, decoder, data converter, computer
interface, and a power supply. |
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There
are two types of Tag: |
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©
Vickerman Associates Asset Management |
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