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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
• [email protected] 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
• [email protected] working to acquire sponsorsWheelchair donated by Aaron Alessi
Team 12: Wheelchair Visionaries
Enjoy the Demonstration!
