Rfid tags

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Here are the slides of my talk at cf.Objective (ANZ) 2012

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Rfid tags

  1. 1. RFID TagsFriday, 2 November 12
  2. 2. RFID Tags • Overview of RFID Based SystemsFriday, 2 November 12
  3. 3. RFID Tags • Overview of RFID Based Systems • Examples of the types Tags availableFriday, 2 November 12
  4. 4. RFID Tags • Overview of RFID Based Systems • Examples of the types Tags available • How certain types of RFID Tags workFriday, 2 November 12
  5. 5. RFID Tags • Overview of RFID Based Systems • Examples of the types Tags available • How certain types of RFID Tags work • Examples of Applications of RFID systemsFriday, 2 November 12
  6. 6. About MeFriday, 2 November 12using Flash Remoting/BlazeDS with Coldfusion as themiddleware to database serversmanufactures RFID Tags and RFID readers
  7. 7. About Me • Chris VelevitchFriday, 2 November 12using Flash Remoting/BlazeDS with Coldfusion as themiddleware to database serversmanufactures RFID Tags and RFID readers
  8. 8. About Me • Chris Velevitch • Flex DeveloperFriday, 2 November 12using Flash Remoting/BlazeDS with Coldfusion as themiddleware to database serversmanufactures RFID Tags and RFID readers
  9. 9. About Me • Chris Velevitch • Flex Developer • Magellan Technology, SydneyFriday, 2 November 12using Flash Remoting/BlazeDS with Coldfusion as themiddleware to database serversmanufactures RFID Tags and RFID readers
  10. 10. What are RFID Systems?Friday, 2 November 12Radio Frequency Identification Systems use radio-frequency electromagnetic fields to transfer data from adevice attached to an object. "
  11. 11. What are RFID Systems? • RFID - Radio Frequency IdentificationFriday, 2 November 12Radio Frequency Identification Systems use radio-frequency electromagnetic fields to transfer data from adevice attached to an object. "
  12. 12. What are RFID Systems? • RFID - Radio Frequency Identification • Uses Radio Waves to transfer Identity DataFriday, 2 November 12Radio Frequency Identification Systems use radio-frequency electromagnetic fields to transfer data from adevice attached to an object. "
  13. 13. What are RFID Systems? • RFID - Radio Frequency Identification • Uses Radio Waves to transfer Identity Data • Tags are physically attached to some object that needs to be identified/trackedFriday, 2 November 12Radio Frequency Identification Systems use radio-frequency electromagnetic fields to transfer data from adevice attached to an object. "
  14. 14. Aspects of RFID TagsFriday, 2 November 12There are many things to take into consideration whendesigning an RFID based system.There are quite a few of them, but some of them aremutually exclusive.
  15. 15. Aspects of RFID Tags • Active vs PassiveFriday, 2 November 12Active means it has its own power source, whereaspassive gets its power from the interrogator
  16. 16. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs UpdatableFriday, 2 November 12Apart from its unique ID, the data sent with ID is either:-1) always the same2) is different each time it is read3) or it has been changed at some stage
  17. 17. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short RangeFriday, 2 November 12The distance between the object and the interrogator.Distances can range from 1 cm to 300 Km
  18. 18. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity (of the tags)Friday, 2 November 12If tagged objects are physically close togetherThis has an impact on how many tags per second can beread which has an impact on the type of reader and typeof tag neededthis can range from < 1 a sec to 300 per sec
  19. 19. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity Based (of the objects) • FrequencyFriday, 2 November 12The frequency of the Radio Waves. They can range from120kHz (HF) to 10 GHz (microwave)the distance between the object and interrogatordetermines the frequency at which the data is transmittedbefore the RF signal is too weak to detectRadio waves weaken at a rate inversely proportional to thesquare of the distance (1/(d**2))
  20. 20. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity Based (of the objects) • Frequency • Command and ControlFriday, 2 November 12There is the expectation that reading or listening for a tagcreates a side-effect in that something happens as a result
  21. 21. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity Based (of the objects) • Frequency • Command and Control • Interrogator talks first vs device talks firstFriday, 2 November 12communication is initiated by the interrogator or the deviceWith passive tags, device talks first is no longer usedtoday because in the earlier techniques of design andmanufacturing of the IC’s used couldn’t packed into asmall enough space the complex circuits needed for thesophisticated handshaking and control of the tagsDetailed reasons to follow
  22. 22. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity Based (of the objects) • Frequency • Command and Control • Interrogator talks first vs device talks first • Amount of Data RequiredFriday, 2 November 12The amount of data the device needs to store isdependent on the application requirements and datacapacities availableThey range from 1-bit to 64kb
  23. 23. Aspects of RFID Tags • Active vs Passive • Static vs Dynamic vs Updatable • Long Range vs Short Range • Proximity Based (of the objects) • Frequency • Command and Control • Interrogator talks first vs device talks first • Amount of Data Required • CostFriday, 2 November 12of the tag and the interrogator/readerThe interrogators or readers are generally more expensivethan the tags and cost of tags start at few cents each to afew 100 dollarsthere are cases in which the tags can be 10’s of 1000’s ofdollars eachthe cost of the readers can range from 100’s of dollars tomillions
  24. 24. The dataFriday, 2 November 12If tags are sourced from multiple manufacturers, themanufacturer code is needed because it is possible have 2or more tags with the same unique identifier.optional user written data such as serial numbers, partnumbers, locations, expiry dates, descriptions, lotnumbers, etc
  25. 25. The data • Manufacturer CodeFriday, 2 November 12If tags are sourced from multiple manufacturers, themanufacturer code is needed because it is possible have 2or more tags with the same unique identifier.optional user written data such as serial numbers, partnumbers, locations, expiry dates, descriptions, lotnumbers, etc
  26. 26. The data • Manufacturer Code • Fixed unique identifierFriday, 2 November 12If tags are sourced from multiple manufacturers, themanufacturer code is needed because it is possible have 2or more tags with the same unique identifier.optional user written data such as serial numbers, partnumbers, locations, expiry dates, descriptions, lotnumbers, etc
  27. 27. The data • Manufacturer Code • Fixed unique identifier • Optionally, object specific informationFriday, 2 November 12If tags are sourced from multiple manufacturers, themanufacturer code is needed because it is possible have 2or more tags with the same unique identifier.optional user written data such as serial numbers, partnumbers, locations, expiry dates, descriptions, lotnumbers, etc
  28. 28. Examples of tagsFriday, 2 November 12So what to tags look like?Active tag
  29. 29. Examples of tagsFriday, 2 November 12So what to tags look like?Active tag
  30. 30. Examples of tagsFriday, 2 November 12Semi-passive or battery assisted. On board battery isused to power everything except the antenna so allreceived power can be used for transmitting back thesignal which will be stronger than passive tags
  31. 31. Examples of tagsFriday, 2 November 12Implantable Passive tag
  32. 32. Examples of tagsFriday, 2 November 121-bit passive tag
  33. 33. Examples of tagsFriday, 2 November 12This is a different type of 1-bit passive tag
  34. 34. Examples of tagsFriday, 2 November 12Passive tag
  35. 35. Examples of tagsFriday, 2 November 12
  36. 36. Examples of tagsFriday, 2 November 12These chips are designed to be extremely low powerand contain control logic to control powerconsumption, to send data and how much, to besilent
  37. 37. Examples of tags Tag Type GPT8 GPL5 MDT3 LMP7 MAG5 DIA4 DOC3 CC2.5 CC5 Specifications Nominal Label Dimensions 26.9mm dia 16 x 50mm - 42 x 47mm 19 x 51mm 30 x 76mm 26 x 66mm 54 x 85mm 50 x 80mm Antenna Dimensions 25 dia 14 x 48mm 31 x 41mm 39.45 x 44.40mm 16 x 48mm 27 x 73mm 20 x 60mm 45 x 76mm 45 x 76mm Turns 8 5 3 7 5 4 3 2.5 5 Minimum Separation 1.5mm 1.0mm 0.1mm 3.0mm 1.0mm 1.8mm 0.1mm 1.0mm 4.0mm Field Strength A/m RMS 3.10 3.50 3.00 0.91 3.00 1.50 3.30 1.30 0.54 Applications Gaming Gaming Document Tracking Multi-purpose Insight maga- Diamond Document Document Tracking Multi-Purpose Tokens Plaques Paper zine reader Tracking Tracking Paper Folders Reader compatibility MARS-AT * * * * * * * * * Tunnel Readers: MSTRP-6464 - - - x - - - x** x MSTRP-5050 - - - x - - - x x MSTRP-4040 x - x x x x x x x Stand-alone Readers: MDR-3021 - - - x - - - - x MDR-1109 x x x x x x x x x MDocR-2505 - - x - - - x x - 3D Readers: M3DR-4330 x - x x x x x x xFriday, 2 November 12 Magellan has a range of PJM RFID StackTags as detailed below. Tags can be supplied as bare inlets, transparent or paper labels. If required, Magellan can produce custom tags. Note: not all tag types are held in stock. Minimum order quantities, design and set-up costs may apply. * = Antenna Dependent ** = Not full 3D range Copyright Magellan Technology 2012
  38. 38. How passive Tags work?Friday, 2 November 12They work on the same principles as transformers
  39. 39. How passive Tags work? • How do passive tags get their power?Friday, 2 November 12They work on the same principles as transformers
  40. 40. How passive Tags work?Friday, 2 November 12The ratio of the voltages is equal to the ratio of thenumber of turns in each coil.
  41. 41. How passive Tags work? • How is the data sent and received?Friday, 2 November 12The coils also act as antennas
  42. 42. How passive Tags work?Friday, 2 November 12The coils act as antennas
  43. 43. How passive Tags work? • How is the radio frequency generatedFriday, 2 November 12
  44. 44. How passive Tags work?Friday, 2 November 12Tuned Resonate circuit
  45. 45. How passive Tags work?Friday, 2 November 12
  46. 46. How passive Tags work? • Radio frequency interferenceFriday, 2 November 12If 2 tags are next to each other, their radio signals will interfereand cancel each other out effectively making the 2 tags invisibleto the reader because the tag’s signal is weaker.
  47. 47. How passive Tags work?Friday, 2 November 12If 2 tags are next to each other, their radio signals will interfereand cancel each other out effectively making the 2 tags invisibleto the reader because the tags are transmitting a strong enoughsignal.
  48. 48. How passive Tags work?Friday, 2 November 12As the distance between 2 tags decreases the amplitude of theeach tags radio signal decreases
  49. 49. Proximity handlingFriday, 2 November 12Tuned vs untuned circuitsHandled by the tag chipreaders can simultaneously listen all 8 channelsread rates are 300 tags/sec
  50. 50. Proximity handling • Controlling the tag frequencyFriday, 2 November 12Tuned vs untuned circuitsHandled by the tag chipreaders can simultaneously listen all 8 channelsread rates are 300 tags/sec
  51. 51. Proximity handling • Controlling the tag frequency • 8 ChannelsFriday, 2 November 12Tuned vs untuned circuitsHandled by the tag chipreaders can simultaneously listen all 8 channelsread rates are 300 tags/sec
  52. 52. ReadersFriday, 2 November 12
  53. 53. ReadersFriday, 2 November 12
  54. 54. ReadersFriday, 2 November 12
  55. 55. ReadersFriday, 2 November 12Small tunnel reader
  56. 56. ReadersFriday, 2 November 12Document tray reader
  57. 57. ReadersFriday, 2 November 12Large desktop reader
  58. 58. ReadersFriday, 2 November 12
  59. 59. ReadersFriday, 2 November 12
  60. 60. ReadersFriday, 2 November 12Frige and 3D cabinets
  61. 61. ReadersFriday, 2 November 123D reading illustration
  62. 62. ApplicationsFriday, 2 November 12All commercial aircraft have RFID tags installed, thereader/interrogator is located at Sydney airport (offscreen). Air traffic control radar triggers the aircraftto send it’s ID along with altitude, speed, headingand GPS location (and maybe some other data).The tag is integrated with the aircraft avionics inorder to get the dynamic dataThis is a specifically designed use case $$$
  63. 63. ApplicationsFriday, 2 November 12All commercial aircraft have RFID tags installed, thereader/interrogator is located at Sydney airport (offscreen). Air traffic control radar triggers the aircraftto send it’s ID along with altitude, speed, headingand GPS location (and maybe some other data).The tag is integrated with the aircraft avionics inorder to get the dynamic dataThis is a specifically designed use case $$$
  64. 64. ApplicationsFriday, 2 November 12Car remotes - command/controlalso garage door openshome alarm sysems
  65. 65. ApplicationsFriday, 2 November 12eToll tag - command/control
  66. 66. ApplicationsFriday, 2 November 12eToll tag - command/control
  67. 67. ApplicationsFriday, 2 November 12eToll tag - command/control
  68. 68. ApplicationsFriday, 2 November 12eToll tag - command/control
  69. 69. ApplicationsFriday, 2 November 12
  70. 70. ApplicationsFriday, 2 November 12
  71. 71. ApplicationsFriday, 2 November 12
  72. 72. ApplicationsFriday, 2 November 12
  73. 73. ApplicationsFriday, 2 November 12
  74. 74. ApplicationsFriday, 2 November 12
  75. 75. ApplicationsFriday, 2 November 12
  76. 76. ApplicationsFriday, 2 November 12
  77. 77. Friday, 2 November 12
  78. 78. • chris.velevitch@gmail.comFriday, 2 November 12

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