Indoor navigation using
motion sensors?
Ian Sheret
3rd December 2009
Inertial sensors
Inertial sensors


Accelerometer senses:
• Acceleration
• Gravity
Inertial sensors




  Gyro senses:
  • Rate of rotation
Inertial sensors




  Data fusion to get:
  • Orientation
  • Motion tracking?
Navigation
Navigation
Navigation
Navigation
          Inertial
        navigation
        processing
Navigation
          Inertial
        navigation
        processing
Navigation

                Navigation
                processing


Information
about:
• Motion
• Environment
Motion information
Motion information

              Pedometer
Motion information

              Pedometer

                 Foot
               mounted
                sensor
Environment information
Great! Except...
•   Absolute fix?
•   Power consumption?
•   Map matching reliability?
•   Accuracy?
•   Value?
Ways forward

     Niche       Mainstream
  applications   applications
Ways forward...

     Niche       Mainstream
  applications   applications
Power management:
Power management:
Minimum sensors to
maintain solution
Logging, process on
demand?
Accuracy:
Accuracy:
  Step       Foot
counting    mounted
Accuracy:
  Step       Hybrid      Foot
counting   approaches   mounted
Gyros and smartphones
Opportunities
• Where battery doesn’t matter
• Highly constrained environments
• Crowd-sourcing
How the Nintento Wii’s motion plus technology has opened the door to a wave of low cost high-tech people tracking services
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How the Nintento Wii’s motion plus technology has opened the door to a wave of low cost high-tech people tracking services

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Transcript of "How the Nintento Wii’s motion plus technology has opened the door to a wave of low cost high-tech people tracking services"

  1. 1. Indoor navigation using motion sensors? Ian Sheret 3rd December 2009
  2. 2. Inertial sensors
  3. 3. Inertial sensors Accelerometer senses: • Acceleration • Gravity
  4. 4. Inertial sensors Gyro senses: • Rate of rotation
  5. 5. Inertial sensors Data fusion to get: • Orientation • Motion tracking?
  6. 6. Navigation
  7. 7. Navigation
  8. 8. Navigation
  9. 9. Navigation Inertial navigation processing
  10. 10. Navigation Inertial navigation processing
  11. 11. Navigation Navigation processing Information about: • Motion • Environment
  12. 12. Motion information
  13. 13. Motion information Pedometer
  14. 14. Motion information Pedometer Foot mounted sensor
  15. 15. Environment information
  16. 16. Great! Except... • Absolute fix? • Power consumption? • Map matching reliability? • Accuracy? • Value?
  17. 17. Ways forward Niche Mainstream applications applications
  18. 18. Ways forward... Niche Mainstream applications applications
  19. 19. Power management:
  20. 20. Power management: Minimum sensors to maintain solution Logging, process on demand?
  21. 21. Accuracy:
  22. 22. Accuracy: Step Foot counting mounted
  23. 23. Accuracy: Step Hybrid Foot counting approaches mounted
  24. 24. Gyros and smartphones
  25. 25. Opportunities • Where battery doesn’t matter • Highly constrained environments • Crowd-sourcing

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