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  1. 1. RFID: Technology and Applications SUNIL GOND B.TECH-ECE
  2. 2. Outline  RFID History  What is RFID? -RFID System Components  RFID Tag -Type of Tag -Tag block diagram  RFID Reader  Future  RFID advantage  RFID disadvantage  Applications  Conclusion RFID-2013 GALGOTIA’S COLLAGE OF ENG. AND TECH. G. NOIDA
  3. 3. RFID History • First Bar code patents – 1930s • First use of RFID device – 2nd world war – Brittan used RFID-like technology for IdentifyFriend. • First RFID Patent - 1973 • Auto-ID center founded at MIT – 1999 • Current thrust primarily driven by Wal-Mart. GALGOTIA’S COLLAGE OF ENG. AND TECH. G. NOIDA
  4. 4. What is RFID? • RFID = Radio Frequency IDentification. • An ADC (Automated Data Collection) technology that: – uses radio-frequency waves to transfer data between a reader and a movable item to identify, categorize, track. – does not require physical sight between reader and the tagged item. – Performs the operation using low cost components. Other ADC technologies: Bar codes, OCR. GALGOTIA’S COLLAGE OF ENG. AND TECH. G. NOIDA
  6. 6. RFID tags •An RFID tag is a microchip combined with an antenna in a compact package. •RFID tags can be very small. •Tags can be attached to almost anything: – Items, cases of products, high value goods – vehicles, assets, livestock or personnel
  7. 7. Types of Tags •Passive Tags – Do not require power – Draws from Interrogator Field – Lower storage capacities (few bits to 1 KB) – Usually Write-Once-Read-Many/Read-Only tags – Cost around 25 cents to few dollars •Active Tags – Battery powered – Higher storage capacities (512 KB) – Typically can be re-written by RF Interrogators – Cost around 50 to 250 dollars
  8. 8. 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
  9. 9. RFID Antennas: • Gate antennas • • Patch antennas • Circular polarized • Di-pole antennas • Linear polarized
  10. 10. The future: RFID: Driving intelligence to edge of Enterprise networks Analog sensors replaced with cheap digital sensors: Motes, etc Enterprise Management Systems adapted to more effectively react in real-time to data. Our professional lives Precision Automation Our personal lives
  11. 11. RFID advantages • 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 GALGOTIA’S COLLAGE OF ENG. AND TECH. G. NOIDA
  12. 12. RFID disadvantage  Lack of industry and application standards  High cost per unit and high RFID system integration costs  Weak market understanding of the benefits of RFID technology
  13. 13. RFID applications  Access control for people; -Secure access to work place -Access to travel on train  Access control for vehicle; -Secure access on site -Istant payment of fuel. • Security – Access control – Counterfeiting and Theft control/prevention • Location Tracking – Traffic movement control and parking management – Wildlife/Livestock monitoring and tracking
  14. 14. CONCLUSION • RFID benefits are due to automation and optimization. • RFID is not a plug & play technology. • Awarneness of RFID technology. • Technology is evolving but physics has limitations.
  15. 15. THANK YOU
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