Radio-frequency identification: Difference between revisions

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(Created page with "==Introduction== Radio-frequency identification (RFID) is a communication technology, that uses electromagnetic waves to identify and track tags. A RFID system consists out of a tag, which is attached to an object, an reader, which extracts the information of the tag and an application, that uses the gathered information. ==RFID-System== ===Reader=== A reader is responsible for initiating the communication with a tag, in case of a passive tag the reader also supplies...")
 
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==Introduction==
#redirect[[Radio-Frequency Identification]]
Radio-frequency identification (RFID) is a communication technology, that uses electromagnetic waves to identify and track tags.
A RFID system consists out of a tag, which is attached to an object, an reader, which extracts the information of the tag and an application, that uses the gathered information.
 
==RFID-System==
 
 
 
===Reader===
A reader is responsible for initiating the communication with a tag, in case of a passive tag the reader also supplies the energy needed to operate the tag. A reader consists out of to components:
<ol style="list-style-type:lower-decimal">
<li>A control unit</li>
<li>A high-frequency interface</li>
</ol>
 
'''Control Unit'''
 
The control unit is responsible for
<ol style="list-style-type:disc">
<li>Communication with the application</li>
<li>Communication with the tag</li>
<li>Coding and decoding of the signal</li>
<li>Anti-collision algorithm</li>
<li>Encryption and decryption of data sent between reader and tag</li>
<li>Authentication between reader and tag</li>
</ol>
 
 
The high-frequency interface is responsible for
<ol style="list-style-type:disc">
<li>Generation of strong high-frequency signals to activate the tag and supply it with energy</li>
<li>Modulating the transmission signal to send data to the tag</li>
<li>Receiving the radio frequency signals transmitted by a tag and converting them back into original data</li>
</ol>

Latest revision as of 19:47, 11 December 2023

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