RFID
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This document provides an overview of RFID (Radio Frequency Identification) technology, including its history, components, and applications. It discusses how RFID systems work using radio waves to transfer data between tags and readers without requiring line of sight. The key components are RFID tags, which contain microchips and antennas, and RFID readers, which can read multiple tags simultaneously. Example applications mentioned include access control for people and vehicles, security/anti-theft, and location tracking. While RFID provides advantages like automatic identification of many items at once, challenges include lack of standards and high initial costs.
RFID
- 1. RFID: Technology and Applications SUNIL GOND B.TECH-ECE
- 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 GALGOTIAS COLLAGE OF ENG. AND TECH. G. NOIDA
- 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. GALGOTIAS COLLAGE OF ENG. AND TECH. G. NOIDA
- 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. GALGOTIAS COLLAGE OF ENG. AND TECH. G. NOIDA
- 5. RFID : CIRCUIT DIAGROM
- 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. 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. 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. RFID Antennas: Gate antennas Patch antennas Circular polarized Di-pole antennas Linear polarized
- 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. 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 GALGOTIAS COLLAGE OF ENG. AND TECH. G. NOIDA
- 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. 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. 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.
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