Computer Input Device for Individual with MD
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Transcript Computer Input Device for Individual with MD
Computer Input
Device for Individual
with MD
Presented by:
Vince Mi – Communications
Kuya Takami – BSAC
Hyungjin Kim – BWIG
Nathan Werbeckes – Team Leader
Advisor – Prof. John Webster
Clients – Dr. Mary Sesto and Richard Kunz
Outline
Background
Problem Statement
Client Requirements
Design Requirements
Forearm Support Designs
Mouse Control Designs
Future Work
Background
bed-ridden with Muscular Dystrophy.
Can use only three fingers for each hand.
Motion range: circles 1 cm in diameter.
Current Device
Trackball
Slippery
Buttons are
inconvenient
Setup time is too long
Problem Statement
Minimize set-up time
Make design easier to use
More sensitive to client’s limited motor
control
More comfortable support
More durable support
Client Requirements
More accessible mouse control device
Wrist and forearm support
Comfort and safety
Quick set-up time
Adjustable
Design Requirements
Connect via USB
Easy to set-up
Great sensitivity
Easy to grip buttons
Should not chafe skin
Adjustable Platform
Pros
Easy to adjust height
Precise height
Stable
Cons
Bulky
Heavy
Blocks
Pros
Simplicity
Easy to construct
Cons
More components
Non-precise height
http://img.alibaba.com/
Adjustable Legs
Pros
Easy to adjust
Precise height
Cons
Unstable
Hard to construct
www.sammonspreston.com/ca/Supply
Design Matrix – Forearm
Support
Weight Adjustable Platform Blocks Adjustable legs
Stability
0.3
9
10
6
Ease of adjustment
0.3
8
3
8
Comfort/Safety
0.2
9
9
7
Ease of construction
0.1
5
10
6
Cost
0.1
7
10
8
8.1
7.7
7
Result
Joystick
Pros
Great sensitivity
Easy to control
Cost
Cons
Setup time
http://kotaku.com/gaming/atari/
Tablet
Pros
Easy to modify
Easy to setup
Cons
More movement
Cost
www.blaptops.com/computers/hacks/
Pointing Stick
Pros
Great sensitivity
Compact
Cons
Cost
Hard to control
www.fief.org/sysadmin/
Design Matrix – Input Device
Input Device
Weight
Joystick
Tablet
Pointing Stick
Sensitivity
0.3
7
5
8
Ease of Operation
0.3
7
4
5
Setup Time
0.2
5
7
5
Cost
0.1
8
3
3
Ease of Construction
0.1
5
8
7
6.5
5.2
5.9
Future Work
Proposed Design:
Forearm Support: Adjustable Platform
Input Device: Joystick
Different height joysticks
Left-hand clicking
Finalize support design
Purchase & personalize prototype
References
Tablet: www.blaptops.com/computers/hacks/
Pointing stick: www.fief.org/sysadmin/
Joystick: http://kotaku.com/gaming/
Blocks: http://img.alibaba.com/
Adjustable legs: www.sammonspreston.com/ca/Supply