3.
RFID = Radio Frequency Identification
Electronic labeling and wireless identification
of objects using radio frequency
Tag carries with its information
a serial number
Model number
Color or any other imaginable data
When these tags pass through a field generated
by a compatible reader, they transmit this
information back to the reader, thereby
identifying the object
4.
A basic RFID system consists of these
components:
A programmable RFID tag/inlay for storing item
data;
Consisting of an RFID chip for data storage
an antenna to facilitate communication with the RFID
chip
A reader/antenna system to interrogate the
RFID inlay
Application software and a host computer
system
5.
The RFID tag consists of an integrated circuit
(IC) embedded in a thin film medium.
Information stored in the memory of the RFID
chip is transmitted by the antenna circuit
embedded in the RFID inlay via radio
frequencies, to an RFID reader
3 types
Passive
Semi-passive
Active
6. Active Tags
• Use a battery
• communicate over
distances of several
meters
Semi-passive Tags
• Contain built-in
batteries to power
the chip’s
circuitry, resist
interference and
circumvent a lack of
power from the
reader signal due to
long distance.
• They are different
from active tags in
that they only
transmit data at the
time a response is
received
Passive Tags
• Derive their power
from the field
generated by the
reader
• without having an
active transmitter to
transfer the
information stored
7. Benefits of using RFID in different industries
Manufacturing
Retailing
4
Frequency
Appx. Read
Range
3
<5cm
Low Frequency
(125kHz)
Low to
Moderate
1
Ultra High
Frequency (433,
868-928 Mhz)
3m -7m
0
0
Microwave (2.45 &
5.8 Ghz)
1
(passive)
1
Moderate to
High
0
Enhanced customer
satisfaction
10m -15m
Improved efficiency
20m – 40m
(active)
2
Mediu
m to
Low
Low
1
0
High inventory
Increased
turnover rate
(passive)
4
Cost of
Tags
High
3
Low
(passive)
Warehousing
4
Data Speed
(passive)
2 2
10 cm – 1m
High Frequency
(13.56 Mhz)
Transportation
High
Application
4
•
Animal Identification
•
•
Access Control
Smart Cards
•
Payment (paywave)
•
1
•
•
Reduced manpower
Logistics and Supply
Chain
Baggage Tracking
Electronic toll collection
0
0
(Autotoll)
Reduced total cost
•
Container Tracking
15.
Positive
RFID is a contactless reading technology and can
read through other materials
Hold more data than barcode does
RFID tags data can be changed or added
More effective, bring lots of convenience to us
Negative
Cost is relatively remain high (compare to barcode)
RFID signals may have problems with some
materials
RFID standards are still being developed
