Radio Frequency Identification (RFID)

The word Radio Frequency Identification is used for automatically identifies a physical object that transmits the identification (in the form of a unique folletín number) of an object wirelessly, using radio waves.

Broadcast Frequency IDentification abbreviated, as RFID is a Dedicated Quick Range Communication (DSRC) technology. It is very similar to Barcode id systems but it got a major difference. RFID does not demand line-of-sight access but bar code scanning it is need to.

RFID technologies are grouped under the more generic Programmed Identification (Auto ID) technologies. The existing Identification systems are generally not sufficient for today use as their low storage capacity as well as the another fact that they cannot be reprogrammed.

A feasible fix is putting the data on silicon chips and contact fewer transfer of data between the data carrying device and its human being. The power required to operate the data-carrying device would be transferred from the reader by contact less technology. Meals lead to the development of RFID devices.

RFID TECHNOLOGY AND BUILDINGS: In an RFID system, the RFID tag, which offers the tagged data of the object, generates a signal containing the very respective information, which is read by the RFID reader, which then may pass this information to a processor for processing the main obtained information for that particular application.

With RFID, the electromagnetic or electrostatic coupling in the RF (radio frequency) portion of the electromagnetic spectrum is used to transmit signs. An RFID system consists of an antenna and a transceiver, which read the radio frequency and transfer the information into a processing device (reader) and a transponder, or RF marking, which contains the RF circuitry and information to be transmitted. The particular antenna provides the means for the integrated circuit to monitor its information to the reader that converts the radio surf reflected back from the RFID tag into digital details that can then be passed on to receivers in which it could analyze the data.

Thus, an RFID System would adhering to three components:

  • RFID tag or transponder
  • RFID target audience or transceiver
  • Data processing subsystem

The transponder, or perhaps RF tag tags can be either active or passive. While the productive tags have on-chip power, passive tags use the strength induced by the magnetic field of the RFID reader. Hence passive tags are cheaper but it got a constraint that, it work in a limited range (RFID Radio frequencies: RFID systems are differentiated based on the frequency range it works. The different ranges are Low-Frequency (LF: 125 – 134. 2 kHz and 140 – 148. 5 kHz), High-Frequency (HF: 13. 56 MHz) and Ultra-High-Frequency (UHF: 850 MHz – 950 MHz and 2 . several GHz – 2 . 5 GH).

RFID, Tag, transponder, Radio, Frequency, Identification

Ultra-High-Frequency RFID systems offer tranny ranges of more than 90 feet. But wavelengths in the 2 . not 4 GHz range are absorbed by water, which include the human body, which gives some limitations of its use.

The factors used in RFID: RFID standards mainly stressed in the using areas Know more about RFID [ ] Click above the link.