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RFID Presentation Transcript
1.RFID
2.Brief History RFID (Radio Frequency Identifier) an Auto-ID data collection system surveillance, using RF waves for Identifying, Tracking and doing Management of material flow.
3.What is RFID system RFID is an acronym for radio frequency identification. Briefly the RF stand for “radio-frequency” and ID means “identifier” that allows an item, for instance a library book, to be identified, accessed, stored, reprogrammed and communicated by using radio waves
4.RFID system components
5.RFID systems: logical view
6.RFID Architecture As depicted in figure.1 the whole operation are worked under three key phases Firstly items-tag are scanned by reader; Secondly in backend transmitted data coming through antenna (RF-wave) are being recognized by RFID-based system PC. It acts as a middleware communication gateway among items, reader and system database; And at the end it filters out and store data in RFID-databases for checking the data fault and relevant operation.
7.Key Components TAGS READER SELF CHECK-OUT/IN MIDDLEWARE (PC) SECURITY GATE LABEL PRINTER SORTER
8.RFID tags: Smart labels
9.RFID tag memory Tags can be attached to almost anything: Items, cases or pallets of products, high value goods vehicles, assets, livestock or personnel Passive Tags Do not require power – Draws from Interrogator Field Lower storage capacities (few bits to 1 KB) Shorter read ranges (4 inches to 15 feet) Usually Write-Once-Read-Many/Read-Only tags Costs low Active Tags Battery powered Higher storage capacities (512 KB) Longer read range (300 feet) Typically can be re-written by RF Interrogators Cost is high
10.RFID tag memory Read-only tags Tag ID is assigned at the factory during manufacturing Can never be changed No additional data can be assigned to the tag Write once, read many (WORM) tags Data written once, e.g., during packing or manufacturing Tag is locked once data is written Similar to a compact disc or DVD Read/Write Tag data can be changed over time Part or all of the data section can be locked 11.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
12.Reader- Tag Communication
13.SELF CHECK-OUT/IN Dual Function(RFID & barcode) Store information about item. Performance statistics Multiple items can be checked out at a time Easier to Use.
14.RFID middleware
15.SECURITY GATE Verify that all items leaving the store have been checked out. Detect Theft and Prevent unauthorized removal of material
16.RFID applications Supply Chain Management Inventory tracking systems Logistics management
17.Asset Tracking -Tracking and Identifying Asset
18.Library Security Access control Counterfeiting and Theft control/prevention
19.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 20.RFID communications
21.RFID communication
22.Operational frequencies
23.Why RFID ? Better Collection Management ? Shelves rectification and Verification Improved Productivity and Services ? Wireless inventory management ? Faster Checked Out/In ? Prevent Theft ? Quick Searching, Weeding & inventory audit Cost Avoidance ? Eliminate Manual Labor Cost. ? Improve automation process ? Reduce Repetitive Stress Injury
24.CONCLUSION We have now observed that RFID is boon to this over ridding scenario. Despite of many digital technology challenges, RFID continues to make inroads into inventory control systems, and it’s only a matter of time before the component costs fall low enough to make RFID an attractive economic proposition. Furthermore, extensive engineering efforts are under way to overcome current technical limitations and to build accurate and reliable tag reading systems. Hence it plays a vital role in inventory and surveillance purpose. If it becomes cost effective its application would also benefit the common citizen.
25.REFERENCES http://courses.cit.cornell.edu/ee476/FinalProjects/s2006/cjr37/Website/index.htm http://www.emeraldinsight.com/journals.htm?articleid=1554341&show=abstract http://www.springerlink.com/content/w265735746440484/ http://www.edaboard.com/thread88594.html http://www.emeraldinsight.com/journals.htm?articleid=1554341&show=html http://www.tutorvista.com/physics/alternating-magnetic-field
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