Team Members - PowerPoint PPT Presentation

1 / 21
About This Presentation
Title:

Team Members

Description:

Many running injuries are caused by continued use of improper or worn running shoes. ... Adidas. Results from Method I (Right Shoe) Results from Method I (Left Shoe) ... – PowerPoint PPT presentation

Number of Views:97
Avg rating:3.0/5.0
Slides: 22
Provided by: CAE1
Category:
Tags: adidas | members | team

less

Transcript and Presenter's Notes

Title: Team Members


1
  • Team Members
  • Brant Kochsiek BWIG
  • Steve Pauls Team Leader
  • Tim Rand Communicator
  • Brian Schwartz BSAC

2
  • Client
  • David Beebe, Ph. D
  • Biomedical Engineering
  • Advisor
  • Justin Williams, Ph. D
  • Biomedical Engineering

3
Abstract
  • Many running injuries are caused by continued
    use of improper or worn running shoes. The
    increase in incidence of injury can be directly
    correlated to the degradation of the materials
    within the shoe sole. Our team has designed a
    device which integrates two Flexi-Force sensors
    into shoe soles in order to measure the force
    that they dissipate. The ratio of the two force
    measurements is directly correlated to the
    elasticity of a shoe sole. An analog to digital
    converter along with a microcontroller is used to
    calculate the ratio of the two force
    measurements. Based on the ratio of force
    measurements the microcontroller can be used to
    drive a tricolor LED. Current testing using an
    analog version of the circuit is being done to
    further prove the worth of the design. Testing
    will begin soon with the digital version of the
    circuit.

4
Problem Motivation
  • Running shoes last 300-500 miles
  • Worn shoes do not always appear worn
  • Risk of injury increases with worn shoes

350 miles of running wear
Less than 50 miles of running wear
5
Client Requirements
  • Design a device that
  • Measures shoe sole elasticity
  • Fits ergonomically into the shoe sole
  • Is lightweight and small so as to not hinder
    performance
  • Is durable enough to last the life of a running
    shoe (300-500 miles)
  • Has a clear indicator so the runner will know
    when the shoe is sufficiently worn

6
Review of Design
  • Two Flexi-Force sensors molded centrally in heel
    of the shoe sole
  • Sensors 1 and 2 are parallel in horizontal plane
  • Control circuit compares differential outputs

1
2
2
7
Improved Design Schematic
  • I Flexi-Force Sensors
  • II A/D Converter
  • III Basic 2 Microcontroller
  • IV Tri-Color LED

8
New Design Advantages
  • Smaller overall size of device
  • 3 op-amp circuits from previous design are
    eliminated
  • Microcontroller offers memory function
  • Easier to Manufacture
  • Only small increase in cost

9
Semester Testing
  • 2 different methods
  • Test 3 different pairs of shoes on different
    runners throughout shoes life
  • Test 3 pairs of shoes of same type with one
    runner

10
Testing Method I
  • Three different runners
  • Run on shoes for full useful shoe life
  • Device is inserted into shoes every 50 miles and
    tested
  • With runner
  • With mechanical testing machines
  • Looking for circuit output vs. wear of shoes

11
Advantages of Method I
  • Allows testing of device in the way it will
    actually work
  • Looks at individual pair of shoes
  • Allows for testing of device in larger variety of
    shoes
  • Nike
  • Adidas

12
Results from Method I (Right Shoe)
13
Results from Method I (Left Shoe)
14
Timeline for Individual Runner Using 3 Different
Pairs of Shoes
  • (Estimated at 35 miles run per week)
  • Weeks
  • 0 2 4
    6 8 10
    12 14 16
  • Miles Run
  • 0------50------100------150------200------250-----
    -300------350------400------450-----500-----550
  • ?---------------------------------------- Shoe 1
    (250 miles)
  • ?------------------------------- Shoe 2 (200
    miles)

  • ?------------------------ Shoe 3 (150 miles)

  • ?---------------- Shoe 4 (100 miles)

  • ?----- Shoe 5 (50
    miles)

  • Shoe 6 (0 miles)

15
Advantages of Method II
  • Shoes can be cut apart during testing
  • Elasticity measurements can be taken
  • Can make direct comparisons between elasticity
    and shoe wear
  • Allows for investigation into consistency in shoe
    manufacturing

16
Results from Method II
17
Final Prototype Option 1
  • All components integrated into shoe
  • Advantages
  • More marketable
  • Easier to use
  • Convenient
  • Disadvantages
  • Cost increase per pair of shoe
  • Could possibly hinder running performance

18
Final Prototype Option 2
  • Microcontroller/battery separate from shoe itself
    (plug in)
  • Advantages
  • Cost effective (No need for microcontroller for
    each shoe)
  • Will not hinder running ability
  • Disadvantages
  • Not as convenient
  • Could misplace the microcontroller rendering the
    entire device useless

19
Goals for Summer 2005
  • Finish all testing and analyze results
  • From results estimate a reasonable threshold
    wear value
  • Finish programming microcontroller
  • Develop a practical method for when and how the
    user will take wear measurements
  • Construct a final working prototype

20
Patent Process
  • WARF filed for a provisional patent
  • WARF is contacting various shoe companies
  • Need to keep WARF updated with progress on
    testing and additions to design
  • Develop a working prototype that is fully
    integrated into a running shoe

21
Special Thanks
  • Professor Justin Williams
  • Professor David Beebe
  • Stephanie Whitehorse
  • Ivar Meyvantsson
  • John Dreger
Write a Comment
User Comments (0)
About PowerShow.com