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Real-Time RFID Localization Using RSS

Real-Time RFID Localization Using RSS. Kirti Chawla, Christopher McFarland , Gabriel Robins, Connor Shope Presenter: Christopher McFarland [cem8u @ virginia.edu]. Background. The necessity for locating objects Limitations of current solutions: Expensive equipment

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Real-Time RFID Localization Using RSS

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  1. Real-Time RFID Localization Using RSS Kirti Chawla, Christopher McFarland, Gabriel Robins, Connor Shope Presenter: Christopher McFarland [cem8u@virginia.edu]

  2. Background • The necessity for locating objects • Limitations of current solutions: • Expensive equipment • Nontrivial computational processing • Unrealistic constraints

  3. Objective • Simple! To locate objects in a given environment • Criteria for a successful system: • Adaptive • Scalable • Accurate • Fast • Realistic

  4. Why RFID? • Scalable • Wide range of environments • Remove unrealistic constraints? • Deliver next generation of localization services

  5. Sneak Peek • Our proposed solution • How?

  6. A Key Insight • Ideal tag-reader pairs unlock higher performance

  7. Real-Time Localization Framework • Problem • Brands of tags have variable performance • Solution • Select tag brands based on performance

  8. Real-Time Localization Framework • Problem • Tags of the same brand have variable sensitivities • Solution • Bin tags based on their sensitivity

  9. Real-Time Localization Framework • Problems • RF signal variability renders the Friis Eqn. useless • Environmental effects affecting RSS

  10. Real-Time Localization Framework • Solution • Inspired by the Friis Equation [ThingMagic, Tag-10] RSS = -53.17D0.29 Friis Eqn. General Form Eqn. RSS = CDE [Alien, Tag-14] RSS = 3246.76D-0.89

  11. Real-Time Localization Framework • Solution • Model RSS decay with respect to tag-reader distance and tag orientation

  12. Real-Time Localization Framework • Proposed future work • Careful use of reference tags? • Auto-calibration routines • Real-time environmental information • Where we’re currently at

  13. Creating a Realistic Deployment Tablet RFID Reader Internet Backend Host Mobile Robot with onboard reader and multi-tag Antenna

  14. Some Results

  15. Have we met the criteria? • Adaptive • Scalable • Accurate • Fast • Realistic

  16. Real-Time RFID Localization Using RSS Kirti Chawla, Christopher McFarland, Gabriel Robins, Connor Shope Presenter: Christopher McFarland [cem8u@virginia.edu]

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