Title: Elevator Controller for Individual with Multiple Sclerosis
1Elevator Controller for Individual with Multiple
Sclerosis
- Team Members Alison Boumeester Sara Karle
Michele Lorenz Ashley Matsick Peter Strohm
Client Dr. John Fleming Department of
Neurology UW-Medical School Advisor Professor
John Webster Department of Biomedical
Engineering UW-Madison
2Overview
- Motivation Background
- Problem Statement
- Prototype
- Project Goals
- Control Options
- Future Work
3Motivation Background
- Patient fully independent inside apartment
(automation) - Mobility impaired by inability to use elevators
- Movement limited to head and neck
- Existing controls mounted on horizontal bar
- Space available
- Bar less than 12 inches from users chest
4Problem Statement
- Integrate current mechanical prototype into
users environment - implement adaptive controls
- mount controls and prototype on wheelchair
- avoid interfering with normal mobility/function
5Prototype Spring 2006
- Mechanical device includes
- Solenoid six-bar mechanism for in/out pushing
force (A) - Linear actuator for up/down movement (B)
- Protective case with actuator guide (C)
6Project Goals Fall 2006
- Choose adaptive controls based on users
preferences - Develop circuitry for actuator (latch mode)
- Build mounting arm for actuator
- Mount and power entire system
- Build weatherproof cover
7Control Array Options
- Membrane/pad switches
- Pros Low cost simple circuitry
- Cons Limited application (momentary contact)
- Trade-off size ease of contact
- Tongue(1) or eyebrow(2) switch
- Pros Dual mode
- Cons Comfort high cost mounting
(1)
(2)
enablingdevices.com
8Control Array Options
- Sip/Puff Switch
- Pros Dual mode fits user preferences ease of
use - Cons High cost size of components
- Ultimate Switch
- Simple operation and mounting low cost
9Future Work Mounting
- Current wheelchair setup requires
- Mounting device on level part of chair
- Location between thigh feet
- No interference with chair function
- Width of device wheelchair
- Movement of rotating leg rests
10Future Work Weatherproofing
Power
- Develop strong removable cover
- Device components exposed fragile
- Weather
- Physical damage to device/surroundings
- Allow for maintenance
- Integrate components (switches and prototype)
with chair - Two existing 12 V batteries
11