Rfid ppt 123

1. RFID: Technology and
Applications
MOUMITA SADHUKHAN (067)
KOUSTABH SENGUPTA (073)
ARPAN MANDAL (093)
ANKITA CHAKRAWARTI (095)
ANAL MANDAL (101)
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2. Outline
 Overview of RFID
 RFID
 ADC
 System Overview
 RFID Tag
 RFID Reader
 RFID Technology
Applications
 RFID Advantage
 Summary 19-05-2020
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Fig: 01

3. What is RFID?
 RFID = Radio Frequency IDentification.
 An ADC (Automated Data Collection) technology
that:
 Uses radio-frequency
 Does not require physical sight or contact
 Provide unique identification
 Other ADC technologies: Bar codes, OCR.
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Fig: 02

4. RFID system components
Ethernet
RFID
Reader
RFID Tag RF Antenna Network Workstation
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5. RFID tags: Smart labels
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A paper label
with RFID inside
an antenna,
printed, etched
or stamped
on a substrate
e.g. a plastic
foil
a chip
attached to it
Source: www.rfidprivacy.org
Fig: 03

6. RFID tags
Tags can be attached to
almost anything:
 Items, cases or pallets of products, high
value goods
 vehicles, assets, livestock or personnel
Passive Tags
Semi passive tag
Active Tags
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Fig: 04

7. Tag block diagram
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Antenna
Power Supply
Tx Modulator
Rx Demodulator
Control Logic
(Finite State
machine)
Memory
Cells
Tag Integrated Circuit (IC)
Block Diag: 02

8. Some RFID tags
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Fig: 07
Fig: 06
Fig: 05

9. RFID readers
 Reader functions:
 Remotely power tags
 Establish a bidirectional data link
 Inventory tags, filter results
 Communicate with networked server(s)
 Can read 100-300 tags per second
 Readers (interrogators) can be at a fixed point such as
 Entrance/exit
 Point of sale
 Readers can also be mobile/hand-held 19-05-2020
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Fig: 08

10. Reader anatomy
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915MHz
Radio
Network
Processor
Digital Signal
Processor
(DSP)
13.56MHz
Radio
Power
Supply
Fig: 09

11. Some RFID readers
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Source: www.buyrfid.org
Fig: 10
Fig: 11
Fig: 12
Fig: 13
Fig: 14

12. RFID application points
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 Assembly Line
Wireless
Bill of Lading
Material Tracking
 Handheld Applications
 Shipping Portals
Fig: 17
Fig: 16
Fig: 15

13. RFID advantages over bar-codes
 No line of sight required for reading
 Multiple items can be read with a single
scan
 Each tag can carry a lot of data
(read/write)
 Individual items identified and not just the
category
 Passive tags have a virtually unlimited
lifetime
 Active tags can be read from great
distances
 Can be combined with barcode
technology
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14. RFID Summary
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Strengths
 Advanced technology
 Easy to use
 High memory capacity
 Small size
Weaknesses
 High cost per unit and high RFID system
integration costs
 Weak market understanding of the benefits
of RFID technology
Opportunities
 Could replace the bar code
 Huge market potential in many businesses
Threats
 Ethical threats concerning privacy life
 Highly fragmented competitive environment

15. References : Some Links
 http://www.epcglobalinc.com/
 http://www.rfidjournal.com/
 http://rfidprivacy.com/
 http://www.rfidinc.com/
 http://www.buyrfid.com/
Thank You
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