Radio
Frequency Identification (RFID)
enables a device to read information from
a distinct tag without requiring any physical
contact or line of site between the two.
The system
consists of three major components: the
tag, the reader and the middleware.
RFID
TAG
An RFID tag, also referred to as a transponder,
is comprised of a simple silicon microchip
combined with an antenna in a compact package.
The tag is a fixed to the object that needs
to be tracked. RFID tags can be as small
as a grain of sand or as big as a book.
There are three main categories of RFID
tags used to classify the tags according
to their energy source and functionalities.
These are active tags, passive tags, or
semi-passive tags.
ACTIVE
TAGS
Active tags have a battery included in the
tag and transmit actively on longer distances
that can reach several kilometers. These
tags are larger, more expensive and more
durable. They are used for tracking trailers
in yards and containers on loading docks.
PASSIVE
TAGS
Passive tags extract their power from the
electromagnetic waves that the reader's
antenna emits. You are already using passive
RFID if you use your ID badge at work or
automatic access, use the Speedpass to purchase
gasoline or own a car that has an antitheft
immobilizer.
SEMI-PASSIVE
TAGS
Semi-passive tags are similar to passive
tags in the way that they extract their
power from a remote device for communication
purposes. However, they also have a built-in
battery that allows them to store data on
the microchip.
RFID
READER
The reader is used to create an interrogation
zone in which the RFID tag will be read,
and in the case of a passive tag will serve
to power it up. The reader will also manage
the different antennas it is connected to
in order to achieve a maximum read rate.
RFID
MIDDLEWARE
The RFID middleware is the brain behind
the system. It will manage the different
readers and instruct them on how to interact
with the RFID tags. It is also the component
that is responsible for communicating filtered
events back to the enterprise system.
Published
articles by Academia's faculty
Exploring
B-to-B e-commerce adoption trajectories
in manufacturing SMEs
The
Potential of RFID in Warehousing Activities
in a Retail Industry Supply Chain
The
Influence of the Buyer-Seller Relationship
on e-Commerce Pressures
RFID
as an Enabler of B-to-B e-Commerce and its
Impact on Business Processes: A Pilot Study
of a Supply Chain in the Retail Industry
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