Post on 21-Jan-2018
RFID
• 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
RFID components
• 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
RFID Tag
• 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
Types of RFID Tags
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
Applications
Frequency Appx. Read Range Data Speed Cost of
Tags
Application
Low Frequency
(125kHz)
<5cm
(passive)
Low High • Animal Identification
• Access Control
High Frequency (13.56
Mhz)
10 cm – 1m
(passive)
Low to Moderate Medium to
Low
• Smart Cards
• Payment (paywave)
Ultra High Frequency
(433, 868-928 Mhz)
3m -7m
(passive)
Moderate to High Low • Logistics and Supply Chain
• Baggage Tracking
Microwave (2.45 & 5.8
Ghz)
10m -15m
(passive)
20m – 40m
(active)
High High • Electronic toll collection (Autotoll)
• Container Tracking
Online Survey
• Target: SME
• Information: Opinion on RFID and its applications
• Site:
• http://qtrial.qualtrics.com/SE/?SID=SV_9N5UPRZuyu
Wtsk4
Survey Result
Logistics and Supply Chain Management
20%
Pharmaceutic manufacturing
industries15%
Library Management21%
Inventory Control
10%
Document Management8%
Security8%
Customer Services5%
Hotel Management5%
Banking and Finance5%
Social Services3%
Other18%
Types of industries that respondents think it is possible to apply RFID technology
Conclusion• 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