Variable Support Platform to Simulate Ankle Injuries Judd Terrell Advisor: Kevin Robinson.

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Presentation transcript:

Variable Support Platform to Simulate Ankle Injuries Judd Terrell Advisor: Kevin Robinson

Goal 1.6 million ankle sprains per year (AAOS) Need to simulate muscle responses to a loss of balance Simulate balance loss without injuring subject

General Design 3’ x 3’ variable support section Section supported at all times by springs: 6 inch outer diameter 8 inch height Spring constant: 5-10 lb/inch

Other Supports Wooden supports On all four sides Support platform when weight is applied Platform travel controlled by notch

Design for Variable Support Solenoid-Bolt coupling 12VDC cylindrical solenoid Controlled by voltage

Electronic Control System Done: Convert rotary switch input to binary Alternate voltage to solenoids State machine diagram To do: Design logic control circuit Build and implement circuit

Estimated Cost ItemPriceQuantityTotal 4’ x 4’ x ¾”$ ” barrel bolt$1.978$ VDC solenoids $3.758$30.00 D-submini connector $1.492$2.98 $197.55

To do: Design/build control circuitry Obtain solenoids Contact local spring manufacturers Develop trigger to signal shift in platform