1 / 33

A Novel Foot Power Generator

A Novel Foot Power Generator. EE4013 Presented by: Paul Lennox Martin Robichaud Supervised by: Dr. Sharaf. Presentation Layout. Summary History & Background Moving Platform Generator Charging Circuit & Source Future Recommendations Questions. Summary.

demetrius
Download Presentation

A Novel Foot Power Generator

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. A Novel Foot Power Generator EE4013 Presented by: Paul Lennox Martin Robichaud Supervised by: Dr. Sharaf

  2. Presentation Layout • Summary • History & Background • Moving Platform • Generator • Charging Circuit & Source • Future Recommendations • Questions

  3. Summary • Purpose is to generate electrical energy from a foot step. Courtesy: www.3dcharacter.com

  4. History & Background • Our project is based on a foot generator designed by a group of 2nd year mechanical engineering students. • Foot platform had already been assembled. • A DC generator was their method of producing electrical energy.

  5. Platform & Generator Courtesy: Floor Generator manual, ME2332, Winter 2004

  6. Functional Diagram • Generator • Charger circuit • Source • Utility circuit

  7. Moving Platform • Redesign or Reuse • Tested the prototype design with pre-established requirements • We decided to build our own

  8. Moving Platform Testing

  9. Goals: 15 mm displacement and sturdy Moving Platform Design Red = Frame Welding Design Green = Moving Platform

  10. Moving Platform Construction • The frame was welded by Mr. Oscar Robichaud. • The main construction was performed by Paul and I.

  11. Generator • Three methods were suggested by our advisor. • Piezoelectric ceramics • DC generators • Variable reluctance coils • Secondary generator

  12. DC Generator Design • Decision: DC Generator • Two main concerns: • Gear Ratio • Total Voltage Rating of 9V • Restrictions: • Small Linear Vertical Movement • Upward and Downward Motion

  13. DC Generator 1 • Tamiya 72005 6-Speed Gearbox • Specifications: • RPM: 5040-6300 • Rated: 3V • Amperage: 0.64A

  14. DC Generator 2 • Tamiya 70097 Twin-Motor Gearbox • Specifications: • RPM: 6990-9100 • Rated: 3V • Amperage: 0.66A

  15. Generator Mechanisms • 3 Attempted Mechanisms • Air Pressure • Mechanical Arm • Mechanical Arm + One-Way Bearing

  16. Mechanical Arm Design • Objectives: • Increase Linear Motion • Interact with Shaft • Easy to adjust Red = Frame Green = Moving Platform

  17. Mechanical Arm • Problems: • Quick change in direction, hard on gears • Change in direction of current, requires H-Bridge • Unusable voltage in the upward motion • Counterweights required due to motor torque

  18. One-Way Bearing • Solution: Add a one-way bearing • Benefits: • Eliminate H-Bridge requirement • Decrease Plate Resistance • Easier on Gears

  19. Generator System

  20. Generator Results • We do not have a digital photo of the output yet. The output current and maximum power will also be noted. Tuesday afternoon. • Currently between 7-8Vpeak per step

  21. Generator Results • Peak Voltage = 8.20 Volts

  22. Generator Results • Max Current = 1.20A • Max Power = 9.84W • Assumptions for plot: • Constant Velocity • No time delay from plate movement to generator output

  23. Charging Circuit & Source • Two methods were suggested by our advisor. • Sealed lead gel batteries • Not Expensive(5$) • Requires Charging Circuit • Super capacitor • Expensive(100$+) • No Charging Circuit Required

  24. Sealed Lead Gel Battery • Specifications: • 6V, 4Amp-Hours • Charging Voltage • 6.7-7.3 Volts

  25. Charging Circuit Design

  26. Charging Circuit Result • 1.10 Voltage drop across the regulator

  27. Charging Circuit Modification • Voltage Regulator LM317T will be replaced • An LDO Voltage Regulator, LM1117 will be used in its place • Expected results: • 0.5 Volt drop across the Voltage Regulator, instead of the current 2.0 Volt drop

  28. Future Recommendations • Generator: • Piezoelectric Ceramics • Variable reluctance coils • Source: • Super Capacitor

  29. Piezoelectric Generator • Benefits: • Implementation • Pressure Dependant • Reliability/Durability

  30. Possible Future Applications Wave Generator

  31. Conclusion • Our prototype demonstrates that a floor generator can be done • A DC generator can illustrate the concept, but the reliability and durability are questionable • Methods to increase output Power: • Increase Displacement • Increase Applied Force

  32. Questions

  33. Extra: Current Measurement

More Related