P14007 wheelchair assist final presentation
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P14007: Wheelchair Assist Final Presentation PowerPoint PPT Presentation


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P14007: Wheelchair Assist Final Presentation. Che -An Lee – Industrial and System Engineer Dan Schuster – Mechanical Engineer Phil Medalie – Mechanical Engineer Tom Elliot – Electrical Engineer Sponsor: Multidisciplinary Senior Design Program. Agenda. Project Description Design Concept

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P14007: Wheelchair Assist Final Presentation

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P14007: Wheelchair AssistFinal Presentation

Che-An Lee – Industrial and System Engineer

Dan Schuster – Mechanical Engineer

Phil Medalie – Mechanical Engineer

Tom Elliot – Electrical Engineer

  • Sponsor: Multidisciplinary Senior Design Program


Agenda

  • Project Description

  • Design Concept

  • System Architecture

  • Project Status

  • Test Results

  • Conclusion


Project Description

  • Design a low cost device that maintain the characteristic of a manual wheelchair and prevent the wheelchair to roll back

  • Key Customer Needs and Engineering Metrics:


Design Concept

Caliper

Brake Disk

Pawl

Ratchet

Bearing Block


Design Concept Cont.

Brake Disk

Pawl

Ratchet

Bearing Block

Caliper


Design Concept Cont.


Design Concept Cont.

  • Left Generator Input Banana Clips

  • Right Generator Input Banana Clips

  • Both Bridge Rectifiers

  • Circuit Breaker Switch

  • Zener Diode

  • Buck-Boost Regulator 5 Volts

  • USB out with USB Circuitry.


System Architecture


Project Status

  • Design meets all customer needs except:

    • Weight (0.5 lbs over)

    • Charging system is not on the chair

  • Unable to test:

    • Maximum weight at 10 degree incline

  • Completed BOM for working prototype

  • Completed all mechanical systems under budget


Test Results


Conclusion

Current Results:

  • Demonstrated a cost effective solution for rolling backwards

  • Design maintains important characteristics of a manual wheelchair

  • Generator system succeeded in charging a battery

Future Work:

  • Weight reduction

  • Universally adaptable to most manual wheelchairs

  • Incorporate movement assist into design

  • More efficient generator system to charge batteries at lower speeds


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