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TagMaster Training 2013 EPC Gen 2 System

TagMaster Training 2013 EPC Gen 2 System. Contents. EPC Gen 2 Background EPC Gen 2 Tag Protocol SecureMarkID  The XT Series. EPC Gen 2 Background. EPC Gen 2 / ISO 18000-6C. EPC Gen 2 = ISO 18000-6C Originally created for item management in the supply chain .

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TagMaster Training 2013 EPC Gen 2 System

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  1. TagMaster Training 2013 EPC Gen 2 System

  2. Contents • EPC Gen 2 Background • EPC Gen 2 Tag Protocol • SecureMarkID • The XT Series

  3. EPC Gen 2 Background

  4. EPC Gen 2 / ISO 18000-6C • EPC Gen 2 = ISO 18000-6C • Originally created for item management in the supply chain. • Flexible enough to be used for other things as well!

  5. The Origin • The Electronic Product Code (EPC) has a somewhat surprising origin in a reasearch project called the DISC (Distributed Intelligent Systems Center) that was started at MIT in 1998. • The initial paper was written by David Brock. His idea was to put RFID tags on everything to make it easy for robots to identify things. David suggested to use simple tags with unique numbers to identify objects and to use the network to download information about the objects. • The team modified a microwave oven to include an RFID reader, tagged a few microwave-ready meals, and created a database with cooking instructions. The demo system was used to convince management to fund the project. • It was clear from the beginning that ”putting RFID tags on everything” would require cheaper tags than what existed at the time. MIT logo

  6. The Low-cost Tag • Chipless and non-silicon tags were investigated but rejected due to performance reasons. The cheapest useful tag was then a passive tag with a single chip (no battery, no crystal). • The largest share of the cost of a chip-based tag is the chip cost. To minimize chip cost it was necessary to use small memories and simple protocols. At the same time the simplification had advantages: • simpler chip  lower power consumption  longer read range • simpler protocols fit more user applications • Minimalist protocols were developed together with chip manufacturers • New manufacturing methods were developed • Free software was developed for the network part of the EPC system EPC tag (chip + antenna)

  7. EPCglobal and GS1 • By 2002, the research at Auto-ID Labs was getting more applied and the commerical demands (e.g. selling EPC numbers) started to grow. • A new not-for-profit organization called ”EPCglobal” was created in 2003 as a joint venture between the bar code organizations UCC and EAN. MIT licensed the EPC technology for free. • UCC and EAN has now merged into GS1. GS1 EPCglobal logo

  8. EPC Gen 2 Tag Protocol

  9. Physical Layer - Reader  Tag • The reader sends information to one or more tags by modulating an RF carrier using amplitude shift keying (ASK) • The data is pulse-interval encoded (PIE) • The tags receive their energy from the modulated carrier 0 1 1

  10. Frequency Channels • Different frequencies are available in different parts of the world • US: 902-928 MHz, 50 channels, frequency hopping, 4W eirp • EU: 865-868 MHz, 4 channels, 2W erp,each channel may be used up to 4 s then it has to be silent for 100 ms • These frequency bands are ISM (Industrial, Scientific and Medical) bands that are used by different kinds of equipment – not only RFID • EPCglobal regularly publishes a document about frequency regulations around the world: “Regulatory status for using RFID in the UHF spectrum” • The latest version was published 8 March 2013 and is available at http://www.gs1.org/docs/epcglobal/UHF_Regulations.pdf

  11. XT-2/XT-3: Physical Layer Control • The output power can be controlled with the "Read level" settings on the web interface or using the TAGP variables READ_LEVEL1 and READ_LEVEL2 (1 = internal antenna, 2 = external antenna). The value is specified as "percent of maximum read range" • In Europe it is allowed to select which of the four available channels to use. This is done with the "EPC Channel Mask" setting on the web interface or the TAGP variable EPC_CHMASK. The value is specified as a hexadecimal bitmask (1 to F) where bit 0 corresponds to the lowest available channel.

  12. XT-2/XT-3: Duty Cycling • To minimize interference it is good to limit the time the radio is active. • Different applications have different requirements • In a parking application it may be ok if a tag is read within one second. • In a train application it may be required to read a tag within 50 milliseconds. • The XT-2/XT-3 readers support duty cycling • Randomized off time (if enabled) assures that two readers are not always active at the same time.

  13. SecureMarkID

  14. Standard EPC tags do not have a unique ID • A tag’s EPC data is user programmable • The data can be locked to prevent modification, but… • … it is very easy to copy the data to another tag that can be modified • This is bad for parking applications! • TagMaster provides SecureMarkID tags with a unique ID

  15. SecureMarkID 1 (2) • SecureMarkID is an encryption solution created by TagMaster that will ensure that each tag has a unique TagMaster identity • The identity of the tag cannot be copied or duplicated • The SecureMarkID information is protected and cannot be accidentally overwritten • No other EPC Gen 2 tag, regardless of tag supplier, will have the same identity or even the same coincidental data content • The identity will be unique also considering the range of identities of the TagMaster 2.45 GHz tags WindShield ID-tag

  16. SecureMarkID 2 (2) • The identity is fully compatible with existing software for TagMaster readers • The identities of tags using SecureMarkID are delivered in sequential running order, and the identity is printed on the Windshield tag type. • Partners selecting SecureMarkID for the stated benefits, can expect recurring business from the corresponding installations, as only TagMaster can provide SecureMarkID tags

  17. The XT Series

  18. The XT Series • The XT series consists of readers and tags for the EPC Gen 2 / ISO 18000-6C standards (UHF, 860-960 MHz) • The XT series complements TagMaster’s 2.45 GHz readers and tags

  19. Standards Compliant EPC Gen 2/ISO 18000-6C Passive tags (without battery) Read range: 5 m Regional regulations US: 902-928 MHz, 4 W eirp EU: 865-868 MHz, 2 W erp Internal + optional external antenna Proprietary Battery assisted tags Read range: 3 – 14 m Global regulations 2.4-2.5 GHz, 1-75 mW Internal antenna XT series vs LR series ”Premium performance” ”Many tags, few readers”

  20. As Much as Possible is the Same • The XT-series readers are based on the same platform as the LR-series readers. As much as possible is the same. • It is possible to mix XT and LR readers in the same installation • LR-series software runs unmodified on XT readers. • Modifications may be needed • to use all capabilities ofEPC Gen 2 tags • to use multiple antennas

  21. Multiple Antennas XT-2 reader Antenna • XT-2/XT-3 support an optional external antenna • RP-TNC connector • 2,5 / 5 meter antenna cable • The antennas are active one at a time. • The reader automatically switches between the antennas • The antennas can share the same frequency channel without interfering with each other • Maximum passage speed is halved when using two antennas antenna cable

  22. Two antennas – one barrier/gate Two antennas – two barriers/gates Multiple Antenna Scenarios • Application doesn’t care about antenna • Old GEN4 applications work as is • WiseMan/WatchMan/PassMan • Customer specific software • Application must know source antenna • Tag event metadata (TAGP/taglib) • Old GEN4 applications must be adapted • Enable tag event metadata • Use multiple databases • Use multiple output interfaces • etc. ü ! 

  23. USB Host Buzzer Ethernet Expansion board VisualIndicators µSD card(on other side) Relay Inputs Outputs Tamper RS485 RS232 Service Wiegand Power Supply Multiple Antennas – Interface Considerations • Adding an external antenna does not duplicate the interfaces. Remember this when designing your system! • The two outputs may be used to control different barriers but there is only one relay and only one Wiegand/Mag-stripe interface. • RS485 and Ethernet are useful interfaces for communicating with multiple devices.

  24. External antenna connector (RP-TNC) Cable gland for all other connections (cable gland included, cable not included) Screw terminals inside (as in LR readers) Mounting kit for wall and pole mounting is available Installation - Reader

  25. Antenna cables are available in two lengths: 2.5 m and 5 m Output power and cable attenuation are tuned to give the best possible performance while staying within regulations. Use only specified cables from TagMaster! The reader supports antenna detection to prevent that antenna power is switched on when no antenna is connected. Note that detection is impossible while power is on. If the antenna is disconnected when power is on the reader will be damaged! XT-2 reader Antenna antenna cable Installation – External Antenna Cable connected to external antenna

  26. End

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