wheelchair power assist
DESCRIPTION
Wheelchair Power Assist . Michael Bowman Team 28. Overview. Introduction Project Objectives Functional Diagram Similar Products including Market Analysis Project Specifications System Block Diagram Gantt Chart Cost Analysis. Henry W. Owen School. Chelsea, Massachusetts. Consultants:. - PowerPoint PPT PresentationTRANSCRIPT
Wheelchair Power Assist
Michael BowmanTeam 28
OverviewIntroductionProject ObjectivesFunctional DiagramSimilar Products including Market AnalysisProject SpecificationsSystem Block DiagramGantt ChartCost Analysis
Henry W. Owen SchoolChelsea, Massachusetts
Consultants:Client: James
Disorder: Degenerative Muscle disease
Contact: Bob Wierzbicki
Client Request
Due to muscle weakness caused by the
client’s disease, he needs a way to add extra
force when moving his wheelchair, allowing
him to move around on his own.
Project Objectives Power Assist add-on to retro-fit existing
wheelchair
Easy-to-use controller for assist adjustments or total control
Easy removal of Power Assist device
Functional Diagram
(diagram courtesy of Yamaha JXW-1)
Similar Products Quickie Xtender Power Assist Sunrise Medical List Price: $6,295
Similar Products e-motion M15 Frank Mobility Systems List Price: $7,675
Market Analysis 2002 US Census Data :
2.8 million US citizens required a wheelchair*
93% of wheelchair users used manual wheelchairs*
Electric wheelchairs can range from $4000 to $15,000+, while manual wheelchairs cost in the hundreds of dollars
* Americans with Disabilities: 2002 Current Population Report P70-107
Project Specifications
Two 12V 12A batteries
Two 24V 120W motors
Purchased/Designed Motor Controller
Designed attachment at wheel hub
Designed User Controller
System Block Diagram
Gantt Chart
Gantt ChartTasks and Subtasks
Cost Analysis – Component Cost
Amstron AP-12120F2 12V/12A battery (2) - $35 each
Sabertooth Dual 12A 6V-24V R / C Regenerative Motor Driver - $65
24V brush motor kit (2)- $200 each
PICkit Microcontroller - $50
Various materials needed for controller- $100
Cost Analysis – Total CostComponent Cost:
(determined from previous page)-- $685
Direct Labor:(determined using the formula $30.28/hr x 15 hrs/week x 20 weeks)-- $9,084
Overhead:(determined by 51% of direct labor)-- $4,632.84
Total Cost:Direct Labor =
$9,084.00 +
Overhead = $4,634.84
+Component Cost = $685_____________________________
Total Cost = $14,401.84
Questions?
Sources http://www.rehabmart.sg/Wheelchairs/Motorized%20Wheelchairs/Yamaha%20JWX-1.pdf http://www.newdisability.com/wheelchairstatistics.htm http://www.census.gov/hhes/www/disability/sipp/disab02/awd02.html http://search.atbatt.com/search?asug=&w=12V&x=0&y=0 http://www.atbatt.com/product/20766/sla/amstron/12v-12ah/battery http://www.thesuperkids.com/scmococoki.html http://
www.allegromedical.com/mobility-scooters-c533/quickie-xtender-power-assist-p189918.html?engine=froogle&utm_source=froogle&utm_medium=feed&CS_003=9164468&CS_010=8ab281020bb66dff010bb679f2d02029&gdftrk=gdfV21244_a_7c477_a_7c4637_a_7c189918
http://www.frankmobility.com/