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
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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
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More accessible mouse control device
Wrist and forearm support
Comfort and safety
Quick set-up time
Adjustable
Design Requirements
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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
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Different height joysticks
Left-hand clicking
Finalize support design
Purchase & personalize prototype
References
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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