The Wingman: Self-Spotting Bench Press - PowerPoint PPT Presentation

elina
the wingman self spotting bench press n.
Skip this Video
Loading SlideShow in 5 Seconds..
The Wingman: Self-Spotting Bench Press PowerPoint Presentation
Download Presentation
The Wingman: Self-Spotting Bench Press

play fullscreen
1 / 17
Download Presentation
The Wingman: Self-Spotting Bench Press
713 Views
Download Presentation

The Wingman: Self-Spotting Bench Press

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. The Wingman: Self-Spotting Bench Press Students: Chris Potts (EE) & Lane Caffaro (ME) Project Supervisors: Professor John Spinelli (EE) & Professor Jennifer Currey (ME)

  2. Motivation Health and fitness have become the focus of many Americans Working out and weight lifting Maximize potential muscle growth Working muscles until failure Dangerous without a spotter Work until lifter doubts he/she can lift the bar Human spotter will become obsolete Still augment muscle capacity with safety as a priority

  3. Goals Lifting subjects Inexperienced vs. experienced Age Sex Parameters Vertical range: 1.2-2 feet Horizontal range: 2-4 inches Weight range: 45-300 pounds Maximum time to lift bar: 2 seconds

  4. Performance Criteria Free weight system No constraints on barbell’s directional motion Comfortable and unobtrusive grip on the barbell Human Spotter Provide assistance to the lifter only when it is necessary Recognize when the lifter can no longer lift the barbell Manual activation by switch or automatic activation by system Output device Total time and repetitions Lift barbell and weight Relatively quick manner

  5. Design Requirements • Activation switches • Passive state to active, return to passive • Grip switches and sensors • Recognize when lifter needs assistance • Electromechanical interface • Pressurized air to raise/lower pneumatic cylinders • Output display • Total time and repetitions

  6. Block Diagram

  7. System Design

  8. Micro switches Placed in “V” Passive to active/Active to passive Ribbon switches Bottom and upper conductors separated so pressure completes the electrical contact Manual activation of system Unobtrusive Run length of barbell Switches

  9. Sensors • PING))) Ultrasonic Distance Sensors • Sonar – pulse transmitted, echo return • Range: 0.75 in. – 10 ft.

  10. Barbell Design

  11. Solenoid Valve with Coil • Lifting mechanism • Air pressurized pneumatic cylinders • Electrical interface • SN754410 quadruple half-H driver interface device • Deenergized in upright for safety

  12. Flow Chart Algorithm

  13. Evaluation • Parameters • Horizontal = 12 in., Vertical = 1 ft., Time = 2 s. • Free weight • Unobtrusive grip • No directional constraints • Human spotter • BASIC Stamp communicated properly • Micro switches activated by energizing solenoid • Ribbon switches deenergize solenoid • Sensors deenergize solenoid • Barbell uneven or stationary • LCD • Lift barbell and weight • Up to 145 pounds successfully at 120 psi

  14. Future Work Wireless Horizontal sensors Better mounted sensors Regulator for amount of weight Ready beep/System failure alarm Adjustable vertical range of pneumatic cylinders

  15. Conclusion Working prototype of The Wingman: Self-Spotting Bench Press Even without a human spotter he/she can work muscles until failure Safety is a priority The Wingman… there to take the fall so you can be the strongest of them all

  16. Questions