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SixthSence:RFID -based Enterprise Intelligence

SixthSence:RFID -based Enterprise Intelligence. HELEN. Outline. RFID Equipment RFID PERFORMANCE MEASUREMENT Algorithms Evaluation Application. RFID Equipment. The Impinj UHF Gen 2 Speedway Reader Impinj's Monza RFID tag. RFID PERFORMANCE MEASUREMENT.

vernon-rowland
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SixthSence:RFID -based Enterprise Intelligence

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  1. SixthSence:RFID-based Enterprise Intelligence HELEN

  2. Outline • RFID Equipment • RFID PERFORMANCE MEASUREMENT • Algorithms • Evaluation • Application

  3. RFID Equipment • The Impinj UHF Gen 2 Speedway Reader • Impinj's Monza RFID tag

  4. RFID PERFORMANCE MEASUREMENT

  5. Effect of displacement from antenna axis on read range • Tag move away from the antenna axis the read range decreases

  6. Effect of distance from antenna on allowed displacement from axis • The tag moves farther from antenna , the allowed displacement from axis also increases proportionally

  7. Read range for tags on object carried by a person

  8. Algorithms • Person-object differentiation • Object ownership • Zone identification • Person identification

  9. Tag belong to person or object? Object move only when carried by a person transition=? Define a suitable threshold person

  10. Problem? • An object belong to an active person might well exhibit far more movement than a sedentary >

  11. Co-movement • The movement of a tag is compare with the movement of other tags at the same point

  12. tag1 m1=1 C1=1 Tag0 tag1 Tag2,m2=2, C2=2 tag2

  13. Object ownership borrow confuse

  14. Co-presence • For each object , we simply keep track of the amount time .

  15. Zone identification • Individual workspace • Shared workspace • Reserved shared workspace • Common area

  16. Person identification Logging • Tag id of person person identity 1 2 1 1 1

  17. Object interaction • If environment is stable , the RSSI from the tag would also be stable • If object is picked up , this would change its distance and its orientation ,thereby causing the RSSI of its tag change • Differ at least 10 dBm interacted

  18. Evaluation movement detection • …………… 100 tag tag

  19. Object interaction detection Sample every 200 ms 4 second window 20 samples6-7 times antenna antenna

  20. Stability

  21. Test bed deployment • ………….. • 1 2 3 …………… 20 • x 20 10% go x 4 (pick at random)

  22. Movement with walk length of 10

  23. Movement with walk length of 2

  24. Application • Misplaced object alert • Annotated video • Automatic conference room booking • Semi-automated image catalog

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