1 / 18

Integrated Workout Shoe

Integrated Workout Shoe. Peter Katlic Advisor: Shane Cotter. Current Offerings – Step Counter. Uses internal switch to count “steps” Simple design Small size Low cost($10-$20) Accuracy(up to 50% error rate) Single user. Current Offerings - GPS. Garmin Forerunner

gloria-mcintosh
Download Presentation

Integrated Workout Shoe

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Integrated Workout Shoe Peter Katlic Advisor: Shane Cotter

  2. Current Offerings – Step Counter Uses internal switch to count “steps” • Simple design • Small size • Low cost($10-$20) • Accuracy(up to 50% error rate) • Single user

  3. Current Offerings - GPS Garmin Forerunner Uses GPS signals to record waypoints  distance • Accuracy(1-5% error rate) • Ease of use • Multiple users • Cost($120-$330) • Loss of signal under tree cover • Bulky design

  4. Current Offerings - Accelerometer Apple Nike + iPod Uses accelerometer to measure acceleration  distance • Accuracy(up to 10% error rate) • Ease of use • Multiple users • Cost($30) (factoring in iPod($150-$350)) • Reliance on iPod

  5. Purpose • Current offerings are extremes • Create product in between others • Combine benefits of each design

  6. Goals Reached Produced a device that meets the following criteria: • Able to be attached to shoe tongue • Part cost of $30 • Records time and distance on device • Registers strides with close to 100% accuracy • Measures distance with 90% projected accuracy • Online workout log

  7. Design Choices • 2-axis vs. 3-axis accelerometer - no need for z-axis measurements • Microcontroller (C8051F330) - small form factor - ADC - adequate RAM - sufficient I/O pins

  8. Development Design • Silicon Labs C8051FX20-TB microcontroller development board • Analog Devices ADXL321EB-ND accelerometer development board • Lumex LDQ-M284RI multiplexed display

  9. Final Design (EAGLE) Circuit Schematic Board Layout

  10. Components • Serpac CA-10 waterproof enclosure • Silicon Labs C8051F330-GM microcontroller • Analog Devices ADXL321JCP accelerometer • Lumex LDQ-M284RI multiplexed display

  11. Input/Output

  12. Implementation • Timer0 seconds • Timer3 sampling rate • ADC0 getting input at 100Hz • Port2 display segments • Port4 display digit

  13. Implementation • Start/stop is pressed  timing begins, sampling begins, display time • Stride is detected  calculate stride/second rate and update distance • Every minute  store total distance in array • Start/stop is pressed  timing stops, sampling stops, display distance

  14. Testing – Phase 1 Development Device • Accelerometer data range • Data capture on 8051 • Accurate stride detection • Simple trials At 2.441V

  15. Testing – Phase 2 Final Device • Adjust code for new platform • Test walks/runs • Known pace testing • Calibration

  16. Online Workout Log • PHP with SQL database • Multiple users • Store workouts • Graph workouts • View workouts by date or user

  17. Future Goals/Improvements • Finish standalone device • Integrate device into shoe • Transfer data to computer and workout log

  18. Questions Acknowledgements: James Hedrick

More Related