Current RFID Technology Dale Blasi

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Information about Current RFID Technology Dale Blasi
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Published on August 20, 2007

Author: Hufflepuff

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Breakout Session V- Technology OpportunitiesCurrent Technology :  Breakout Session V- Technology Opportunities Current Technology Dale A. Blasi Kansas State University Presentation Outline:  Presentation Outline Radio Frequency Identification (RFID) ISO Standards Challenges/issues Future developments Slide3:  Ever seen characters like this?:  Ever seen characters like this? Slide5:  Slide6:  Problem:  Problem Front end to the computer is a HUMAN Slide8:  Slide9:  Slide10:  Slide11:  What is Radio Frequency ID? :  What is Radio Frequency ID? Sister technology to barcodes Radio waves vs light waves Reads through non-metallic materials Does not require line-of-sight Withstand harsh environments Slide13:  Radio Frequency Spectrum Slide14:  ISO 11784 – Agricultural Equipment – Radio Frequency Identification of Animals Code structure ISO 11785 – Agricultural Equipment – Radio Frequency Identification of Animals Technical concept International Committee for Animal Recording (ICAR):  International Committee for Animal Recording (ICAR) Primary mission Standardize procedures and methods used in recording of livestock data Establish test procedures for the approval of equipment and methods for recording data Based on general agreement with ISO (Resolution ISO/TC 23/SC 19 N 113, No. 45; August, 1996), ICAR has been developing procedures to verify compliance of RFID systems with the standards and the user requirements ISO 11785:  ISO 11785 Transponders (tags) meet req. set forth by clause 6 of the international standard Tranceivers (readers) are in conformance provided they meet the req. set forth by clause 6 and annex A, provided the latter is applicable Clause 6 sets forth the activation field and frequency (134.2 + 13.42 x 10-3) and defines the timing sequence for both HDX and FDXb air interfaces ISO does not have the responsibility of determining compliance with ISO standards Slide17:  ISO 11785 permits either one-way at a time signal transmission (HDX) or simultaneous two-way signal transmission. It is necessary to have the combination of the two systems into one reader in order to be an ISO-compliant reader. Combining both systems slightly deteriorates their performance. FDX functions better without the interruption of the activation field, necessary for HDX Half duplex (HDX) and Full duplex (FDX) Slide18:  TRANSmitter/resPONDER Passive vs active Data carrying options Data read rates Programming options Physical form Costs Slide19:  Passive vs Active Transponders Passive No internal battery Lighter Less expensive Virtual unlimited operational life Active Internal battery- finite lifetime Read/write devices Greater size/cost Greater communication range Higher data transmission rates Slide20:  Data Carrying Options Identifier Numeric/alpha-numeric string for ID purposes Simple 'lookup' number Portable data files Decentralized database Increased tag complexity usually accompanied by an increase in the data memory of the device which, in turn, generally reflects an increase in cost Slide21:  Transponder cost Complexity of circuit function Construction and memory capacity Manner in which the transponder is packaged Slide22:  Functions: Transmit and receive RF signals Contain a control unit to execute commands Incorporate an interface to transfer data Receives commands from the host computer Responds to software commands from the host computer Reader/Interrogator/Scanner Slide23:  Readers can differ considerably Depends upon the type of transponders being supported Intended function Handheld vs stationary Sophisticated functions Signal conditioning Parity error checking and correction Challenges/Issues LF RFID:  Challenges/Issues LF RFID Environment Read range Contention Slide25:  Physical form Slide26:  Factors that affect Reader Range Power available to the reader Power available within the tag to respond Antenna characteristics and size Competition from other devices emitting electric signals Slide27:  Slide28:  Slide29:  Dielectric Materials:  Dielectric Materials Materials that freely: Conduct radio energy Absorb it Detune it Reflect it Liquids and metals present the biggest challenges Slide31:  Slide32:  Slide33:  Defined… Term(s) used to denote an event when two or more transponders compete for attention from the reader at the same time resulting in potential misreading. Anti-contention/collision: Slide34:  Loss in efficiency Added costs – Equipment/labor Excessive handling Slide35:  Slide36:  Read Distance of Four eID Tags as Influenced by Reader :  Read Distance of Four eID Tags as Influenced by Reader 50 tags were randomly selected to represent each manufacturer USAIP Bovine Standards Subcommittee 5/18/04 Slide38:  Analysis of Performance of FDX-b Transponders:  Analysis of Performance of FDX-b Transponders Manufacturer Resonance Freq Tag Response (mVolt) A 129.0 30 A 128.7 23 B 124.0 no response B 125.0 no response C 131.0 23 D 134.0 79 D 133.9 78 D 134.6 80 E 135.2 39 E 135.6 39 E 135.0 40 Read Distance of Eight eID Tags as Influenced by Reader :  Read Distance of Eight eID Tags as Influenced by Reader Animal ID Resources:  Animal ID Resources www.beefstockerusa.org Slide42:  Dale A. Blasi Kansas State University KSU Animal ID Knowledge Laboratory dblasi@ksu.edu

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