1. Michael Bowman Team 28

2. Overview Introduction Project Objectives Functional Diagram Similar Products including Market Analysis Project Specifications System Block Diagram Gantt Chart Cost Analysis

4. Consultants :  Client: James  Disorder: Degenerative Muscle disease  Contact: Bob Wierzbicki

5. 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.

6. 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

7. Functional Diagram (diagram courtesy of Yamaha JXW-1)

8. Similar Products Quickie Xtender Power Assist Sunrise Medical List Price: $6,295

9. Similar Products e-motion M15 Frank Mobility Systems List Price: $7,675

10. 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

11. Project Specifications Two 12V 12A batteries Two 24V 120W motors Purchased/Designed Motor Controller Designed attachment at wheel hub Designed User Controller

12. System Block Diagram

13. Gantt Chart

14. Tasks and Subtasks

15. 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

16. Cost Analysis – Total Cost  Component 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

17. Questions?

18. 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=8ab 281020bb66dff010bb679f2d02029&gdftrk=gdfV21244_a_7c477_a_7c4637_a_7c189918 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=8ab 281020bb66dff010bb679f2d02029&gdftrk=gdfV21244_a_7c477_a_7c4637_a_7c189918 http://www.frankmobility.com/