Major Features of an RFID System
Able to Read and Write data without direct contact.
RF tags can store data as much as max. 8000 bytes enough for the
production control. All of the data required for each process (process
history, inspection history etc) can be freely stored, without the need
for direct contact. This makes it possible to develop paperless sites,
where the causes of production stop are reduced.
By "combining an item with its information", a
highly pliable and reliable system configuration becomes possible.
With the technology to decentralize information, the load on higher
systems is reduced. This means that system development costs can also be
reduced, systems can be implemented significantly faster, and the system
is much more flexible when making changes. Also, "the unification of items
with their information" for each process and site can make it possible to
manage production/processes and product quality without errors. And, with
the latest information contained in RF tags, work can continue offline in
emergencies, significantly shortening the time required to restore
processes.
With the adoption of space transmission technology
and protocols, highly reliable communication is made possible.
As opposed to barcodes which simply look for 1 or 0, advanced space
transmission technologies and specialized protocols are employed for
transmission through the air. 16 bits CRC is added to the information as
it is transmitted. More than 18 bits Burst errors can be detected at a
ratio of 00.9985%, providing a very high reliability in the transfer.
Also, since there are no mechanical devices involved such as with the
Raster Scan method for barcodes, the likelihood of malfunction and other
problems is greatly reduced.
Reading and writing is possible without line of
sight, using electric and electromagnetic wave transmission.
Unlike barcodes, since communication occurs by means of electric and
electromagnetic waves, erroneous readings due to dirt, moisture, oil etc
are cancelled out. Even if there is dust, moisture etc., or anything other
than metal between the antenna and the RF tag, it will not affect
transmission. And since the communication range is wide, there is no need
for extreme positioning which can greatly reduce the time and cost of
design.
RFID System Function Block Diagram
Types of Spatial Transmission
<< What is RFID
Systems?
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