r-field systems are that in which inductive coupling of the tag employ to thereactive energy circulating around the reader antenna, Far-field systems that couple to the real energy contained in propagating electromagnetic plane waves.
RFID is like a tag in which information and instructions are
stored. It can be used in a car manufacturing, into a dog collar etc. An RFID system can range up to 90 feet. Unlike barcode technology, RFID does not require line-of-sight reading on which a bar code depends and RFID scanning can be done at greater distances than bar code scanning.
The reader contains a radio frequency module, a signal processing and micro controller unit, a coupling element and the interface to a host system. There are many different kinds of readers on the market, such as desktop, hand-held, tunnel or gate/gantry style readers. The host system controls the data flow between the readers and tags. It can be as simple as a persona.computer connected to the reader by an RS-232 serial cable.
RFID has a plethora of uses. While initially the technology was just confined to tracing or identifying dogs, for a means of permanent identification number, the uses of RFID have simply multiplied over the years. Today RFID technology is seen in almost every field. Be it medicine, education (like library work), shipping, electronic devices automobiles, musical instruments, tracking movements of individuals via their passports etc, everywhere the RFID technology is at work.
RFID technology is becoming more widespread due to the manufacturing of RFID software. Now a days there are many effective and efficient RFID software solutions in the market. RFID technichal solutions bring new means to view your asset tracking and maintaing capability. So enjoy technology .
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