vision integrated electric wheelchair kit (view kit) team wheelchair visionaries (12) siddharth...

Team 12: Wheelchair Visionaries

Vision Integrated Electric Wheelchair Kit (VIEW Kit)

Team Wheelchair Visionaries (12)Siddharth Kuncham, Douglass Roman, Peter Arriaza, Neil Zhang

Team 12: Wheelchair Visionaries

Problem Over 180,000 Americans are classified as Quadriplegic

•12,500 new injuries a year•Almost all quadriplegic patients have neck mobility

Electric Wheelchairs cost around $1900 - $30,000+•Weigh around 250-300+ pounds

Team 12: Wheelchair Visionaries

PurposeMotorized Attachment Kit for Manual Wheelchairs

• Controlled by eye and neck movement

Provide quadriplegic patients with a cheaper and easier option to regain mobility

• Lighter, more portable, and more versatile

Team 12: Wheelchair Visionaries

Existing Solutions - Conversion KitsE-Motion Power SystemLight Drive

Team 12: Wheelchair Visionaries

Existing Solutions - Eye Tracking

Infrared SensorsCamera

Team 12: Wheelchair Visionaries

Why the VIEW Kit?• Provides integration of conversion kits and eye

tracking systems

• Simple to install, adjustable, used for different types of wheelchair

• Significantly lower in price

Team 12: Wheelchair Visionaries

Wheelchair ComparisonManual

Pros• easy to transport• lightweight• lower maintenance

Cons• requires arm strength to move• difficult for slopes

PowerPros

• allows those with difficulty propelling wheelchair to move adequately

• increased freedom

Cons • high cost• heavy • difficult to transport• requires charging• higher maintenance

Team 12: Wheelchair Visionaries

High Level Design

Team 12: Wheelchair Visionaries

Drive System

Bulk of Price

Driving Force for system• hub system• drive wheel system

• different wheel locations

Team 12: Wheelchair Visionaries

Motor SizingAssumptions and Requirements for motor selection:

• Ramp Angle 12:1, Radius of driving wheel 5cm, Total mass (chair, kit, person) 320 lbs, Desired speed up ramp 1.5mph

Motor we selected. Ours includes 26.9:1 ratio gearbox.

Team 12: Wheelchair Visionaries

Team 12: Wheelchair Visionaries

Friction Testing

Tested three different types of rubber: ● Neoprene 1.246● Silicone 0.991● Polyurethane 0.319

Used as a method of comparison

Need more testing and data analysis

Team 12: Wheelchair Visionaries

Team 12: Wheelchair Visionaries

Team 12: Wheelchair Visionaries

Eye Tracking System• Measuring reflected infrared light

• Infrared LED and two phototransistors

• Neck tracking to come

Advisors and SponsorshipPrimary Faculty Advisor: Dr. Mark Yim

• Professor, Mechanical Engineering and Applied Mechanics at the University of Pennsylvania

• yim@seas.upenn.eduTechnical Advisor: Dr. George J. Pappas

• Joseph Moore Professor, Electrical and Systems Engineering, Computer and Information Science, Mechanical Engineering and Applied Mechanics at the University of Pennsylvania

• pappasg@seas.upenn.eduCurrently working to acquire sponsorsWheelchair donated by Aaron Alessi

Team 12: Wheelchair Visionaries

Enjoy the Demonstration!

Questions?

You can also email us at:

info@wheelchairvisionaries.com