What is RFID Technology ????
RFID stands for Radio
Frequency Identification. RFID technology makes use of
electromagnetic waves to capture and read data. The information is
electronically stored on a tag that is attached to an object or the carrier.
The tags can be detected from several feet away by the receiver.
RFID technology is popularly employed in
access control systems to allow entry of authentic and authorized personnel
only.
RFID technology has application in several
areas such as:
- Identification of personnel
- Access based security systems
- Parking facilities including gate
control
- Tracking of consumer goods
RFID in Access Control Management System
The
most common use of RFID is in access control and door entry systems for
personnel. The basic principle upon which RFID tags are employed is the
identification badge of the workers of any company or industry. The RFID
applications for personnel identification uses normally quite low frequency,
almost 140 KHz, for badge detection.
Let’s
take a deeper dive to understand how RFID technology works in the access control
systems. RFID system is composed of the following main components:
RFID tags are used in many industries. For
example, an RFID tag attached to an
automobile during production can be used to
track its progress through the assembly line; RFID-tagged pharmaceuticals can
be tracked through warehouses; and implanting
RFID microchips in livestock and pets enables
positive identification of animals.
RFID Card / Tag
The
information of person, object or the carrier is electronically stored in the
RFID cards/tags. The RFID card/tag can contain only small piece of information
such as identification number, price or code.
RFID Door Reader
The
RFID reader has an antenna which sends the radio waves to detect any RFID tag
or card within its range. This range can vary for the RFID readers depending
upon the frequency of emitted radio waves.The RFID reader decodes the uniquely
stored information in the RFID card/tag and sends the signal to the host
software.
How Does RFID Works ???
RFID belongs to a group of technologies referred to as
Automatic Identification and Data Capture (AIDC). AIDC methods automatically
identify objects, collect data about them, and enter those data directly into
computer systems with little or no human intervention. RFID methods utilize
radio waves to accomplish this. At a simple level, RFID systems consist of
three components: an RFID tag or smart label, an RFID reader, and an antenna. RFID
tags contain an integrated circuit and an antenna, which are used to transmit
data to the RFID reader (also called an interrogator). The reader then converts
the radio waves to a more usable form of data. Information collected from the
tags is then transferred through a communications interface to a host computer
system, where the data can be stored in a database and analyzed at a later
time.
Two Types of
RFID Systems:
What is RFID Reader Technology ???
Two Types of
RFID Systems:
·
Active RFID system: These are systems
where the tag has its own power source like any external power supply unit or a
battery. The only constraint being the life time of the power devices. These
systems can be used for larger distances and to track high value goods like
vehicles.
·
Passive RFID system: These are systems where the tag gets power through the
transfer of power from a reader antenna to the tag antenna. They are used for
short range transmission.
What is RFID Reader Technology ???
A radio frequency identification reader (RFID
reader) is a device used to gather information from an RFID tag, which is used
to track individual objects. Radio waves are used to transfer data from the tag
to a reader.
RFID is a technology similar in theory to bar codes. However, the RFID tag does not have to be scanned directly, nor does it require line-of-sight to a reader. The RFID tag it must be within the range of an RFID reader, which ranges from 3 to 300 feet, in order to be read. RFID technology allows several items to be quickly scanned and enables fast identification of a particular product, even when it is surrounded by several other items.
RFID tags have not replaced bar codes because of their cost and the need to individually identify every item.
RFID is a technology similar in theory to bar codes. However, the RFID tag does not have to be scanned directly, nor does it require line-of-sight to a reader. The RFID tag it must be within the range of an RFID reader, which ranges from 3 to 300 feet, in order to be read. RFID technology allows several items to be quickly scanned and enables fast identification of a particular product, even when it is surrounded by several other items.
RFID tags have not replaced bar codes because of their cost and the need to individually identify every item.
RFID technology may be
used in a variety of applications including:
- Passports
- Smart cards
- Airplane luggage
- Toll booth passes
- Home appliances
- Merchandise tags
- Animal and pet tags
- Automobile key-and-lock
- Monitoring heart patients
- Pallet tracking for inventory
- Telephone and computer networks
- Operation of spacecraft and
satellites
Thank you very much.
ReplyDeleteI have found that this site is very informative, interesting and very well written. keep up the nice high quality writing. RFID
ReplyDeleteGreat blog, learned many things about RFID from this article. Also, if you are looking for RFID tags and software then assetpulse is the best place for you.
ReplyDeleteRFID asset tracking
RFID tracking
RFID tracker
Asset Tracking With RFID
Great Information sharing .. I am very happy to read this article .. thanks for giving us go through info.Fantastic nice. I appreciate this post. rfid label manufacturer
ReplyDelete