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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.

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Sixthsence rfid based enterprise intelligence

SixthSence:RFID-based Enterprise Intelligence

HELEN


Outline
Outline

  • RFID Equipment

  • RFID PERFORMANCE MEASUREMENT

  • Algorithms

  • Evaluation

  • Application


Rfid equipment
RFID Equipment

  • The Impinj UHF Gen 2 Speedway Reader

  • Impinj's Monza RFID tag



Effect of displacement from antenna axis on read range
Effect of displacement from antenna axis on read range

  • Tag move away from the antenna axis the read range decreases


Effect of distance from antenna on allowed displacement from axis
Effect of distance from antenna on allowed displacement from axis

  • The tag moves farther from antenna , the allowed displacement from

    axis also increases

    proportionally



Algorithms
Algorithms axis

  • Person-object differentiation

  • Object ownership

  • Zone identification

  • Person identification


Tag belong to person or object
Tag belong to person or object? axis

Object move only when carried by a person

transition=?

Define a suitable threshold person


Problem
Problem? axis

  • An object belong to an active person might well exhibit far more movement than a sedentary

    >


Co movement
Co-movement axis

  • The movement of a tag is compare with the movement of other tags at the same point


tag1 axis

m1=1 C1=1

Tag0

tag1

Tag2,m2=2,

C2=2

tag2


Object ownership
Object ownership axis

borrow

confuse


Co presence
Co-presence axis

  • For each object , we simply keep track of the amount time .


Zone identification
Zone identification axis

  • Individual workspace

  • Shared workspace

  • Reserved shared workspace

  • Common area


Person identification
Person identification axis

Logging

  • Tag id of person person identity

1

2

1

1

1


Object interaction
Object interaction axis

  • 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


Evaluation movement detection
Evaluation movement detection axis

  • ……………

    100

tag

tag


Object interaction detection
Object interaction detection axis

Sample every 200 ms

4 second window 20 samples6-7 times

antenna

antenna


Stability
Stability axis


Test bed deployment
Test bed deployment axis

  • …………..

  • 1 2 3 …………… 20

  • x 20 10% go x 4 (pick at random)




Application
Application axis

  • Misplaced object alert

  • Annotated video

  • Automatic conference room booking

  • Semi-automated image catalog


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