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ElecTrek

ElecTrek. Katie Heinzen Kathryn Lentini Neal Venditto Nicole Wehner. Outline. Problem Description Proposed Solution Demonstrated Features Available Technologies Engineering Content Conclusion. Problem Description. Customer: Outpost Sports in Mishawaka

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ElecTrek

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  1. ElecTrek Katie Heinzen Kathryn Lentini Neal Venditto Nicole Wehner

  2. Outline • Problem Description • Proposed Solution • Demonstrated Features • Available Technologies • Engineering Content • Conclusion

  3. Problem Description • Customer: Outpost Sports in Mishawaka • Owner wants to capture, store, and use energy created during cycling classes http://www.outpostsports.com/index.php/find-us/

  4. Training Facility • Cycling classes during winter for advanced cyclists • Facility accommodates 8 riders per class • Cyclists use own bike

  5. CompuTrainer System • Resistance controlled by computer software and device • Currently energy lost as heat

  6. Project Benefits • Energy stored in battery for use • Charge electronics (iPod, cell phone) • Power fans • Power lights • Reduce electricity bill • Reduce cooling costs

  7. Proposed Solution • Non-invasive • Do not alter commercial coding • Do not alter CompuTrainer resistance system • Keep the riding experience comparable

  8. Proposed Solution

  9. Challenges • Interface between bike and generator • Interface between generator and battery • Battery requirements: frequent deep cycling, size, cost, lifetime • Safe disconnect of fully-charged battery

  10. Demonstrated Features • Conversion of mechanical energy to electrical energy • Riders’ training regimen will not be disturbed • LCD displaying statistics of power generation and battery status • Automatic disconnect of battery

  11. Available Technologies: Generator • Permanent Magnet DC Generator • No AC to DC conversion • Low rpm

  12. Available Technologies: Battery • Lead-Acid Deep Cycle Battery • Common in solar and wind projects • Large charging current • Inexpensive • Large capacity

  13. Engineering Content • Bike wheel/generator interface • Rests on shaft (friction & resistance) • Stable bracket • Generator/battery interface • Regulate current • Battery • Deep-cycling • Energy density

  14. Engineering Content (cont’d) • Microcontroller: • Monitor generator current and power output, battery voltage • User-friendly LCD • Power conversion • Impact on pedaling resistance

  15. Functional Blocks & Problem Areas Friction/Resistance Generator Bike Wheel Efficient Charging Battery Monitoring Parameters LCD Screen

  16. Conclusions • Goal is to generate electricity from mechanical power • Independent of CompuTrainer • Compatible with multiple bike training systems • Alternative energy source • Ideal for individual use

  17. Outline • Problem Description • Proposed Solution • Demonstrated Features • Available Technologies • Engineering Content • Conclusion

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