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radio-frequency identification (RFID)
- 1. Welcome To MYPresentation Presented By - Sudeb das - ID: 2014-2-55-023 - Department of ECE
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- 3. CONTENTS What isRFID ? How Does RFID Work RFID Hardware Applications of RFID
- 4. What is RFID? RadioFrequency Identification The use of radio frequency readers and tags to identify real objects. New frontier in the field of information technology One form of Automatic Identification
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- 6. How Does RFIDWork? 3 Components Transceiver – Tag Reader Transponder – RFID tag Antenna
- 7. RFID Hardware Magnetic /Inductive Coupling Transceiver Tag Reader antenna RFID Tag IC or microprocessor antenna
- 8. RFID Hardware Propagation Coupling Transceiver TagReader antenna RFID Tag IC or microprocessor antenna
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- 10. RFID reader Also knownan interrogator (as it is used to interrogate an Tag). Reader powers passive tags with RF energy Can be handheld Consists of: Transceiver Antenna Microprocessor Network interface
- 11. RFID tags Tag isa device used to transmit information such as a serial number to the reader in a contact less manner Classified as : Passive – energy from reader Active - battery Semi-passive – battery and energy from reader
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- 14. Frequency Ranges Low– 100-500 kHz short range, low data rate, cost, & power Intermediate – 10-16 MHz medium range and data rate High – 850-950 MHz & 2.4-5.8GHz large range, high cost, high data rate needs line of sight
- 15. Frequencies of operation Low frequency 30-300 kHz Tags need to be closer to the reader Poor discrimination High frequency/radio frequency 3-30 MHz Tags can be read from relatively greater distances Tags can hold more information Ultra high frequency/microwave >300 MHz Longest range More interference
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- 17. Maximum Distances toRead UHF Passive Tag Antenna Gain (dBi) 6 (legal) 9 12 15 Distance (meters) 5.8 8.3 11.7 16.5 Distance (feet) 19* 27 38 54 *Reality: Today, in the lab 8 to 12 feet.
- 18. Applications, frequencies, andstandards Applications Frequencies Animal Identification, dogs, cats, cattle < 135 KHz Smart cards, Passport, Books at library 13.553 – 13.567 MHz Supply chain for retail 868 – 928 MHz Standards ISO 18000–2 ISO 11784 ISO 11785 ISO 14223 ISO 18000–3 ISO 7618 ISO 14443 ISO 15693 13.56 MHz ISM Band Class 1 EPCglobal Class-1 Gen-2 ISO 18000–6
- 19. Multiple Tags? What happenswhen multiple tags are in range of the transceiver? All the tags will be excited at the same time. Makes it very difficult to distinguish between the tags.
- 20. General Applications usedin our Day-to-Day Life Keyless entry Electronic Product Code (EPC) Proximity cards
- 21. General Applications Paymenttokens Contact-less credit cards Automatic toll-payment Euro banknotes Passports
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- 23. Current Applications Livestock Tagging WildAnimal Tracking Electronic Article Surveillance (EAS) Automated Toll Collection Animal Husbandry Vehicle Anti-Theft
- 24. Security Applications RFID usedto grant entry to secure areas Tracks time and movement of people Dynamically change access codes Provide automated entry
- 25. Conclusion RFID has manypotential uses Likely to play a key technological role Perceptions of privacy and security vary Privacy and security concerns must be addressed
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