1. P08003 Portable Obstacle Course Jared Berman (ME) Allison Hill (EE) Nicolette McGeorge (ISE) Samir Mian (CE) Shadle Stewart (ME) Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.

2. Agenda Project Description High Level Customer Needs Description of Design Final Product Verification of Specifications Project Finalization Project Evaluation Future Recommendations

3. Project Description Physical Therapy Clinic of Nazareth College: J.J. Mowder-Tinney There is no commercial product readily available to recreate daily household movements. Our objective is to create an obstacle course to simulate a more realistic experience for stroke patients re-learning how to walk.

4. Project Description An ideal course would allow for various: – Terrain – Routes – Lengths – Difficulty – Obstacles The course must track: – Obstacle location – Surface type and orientation

5. Customer Needs Portable, easy-to-use obstacle course Repeatable, reusable and reconfigurable Should be able to keep track of obstacle and surface orientation Safety

6. Final Design Modular System: Surface pieces connect together to form the length of the course. Course: Four surface pieces (32”x42”) in line to form a 14-foot long course. Tracking: Five holes in each surface piece, in which the peg of an obstacle can be placed to depress a micro switch to signify its presence.

7. Surfaces and Obstacles Surfaces Carpet (with padding) High/Low Hardwood Dark/Light Concrete Ice Gravel Rubber Mat Obstacles Throw-rugs (4) Curb 3-inch/6-inch Heater Vent Threshold Shoes (4) Pillows (2) Bundle of Cords (2) Stuffed animal (2) Stack of Books

8. Surface Piece Design – Sandwiched layers – Embedded tracking system – Holes for obstacle placement – Handles for portability

9. Obstacle Design Obstacle Peg attachment – Plate mount – Attach to bottom of obstacle – Fits into holes in surfaces to allow for tracking

10. Storage Design Storage Cart – Stores all eight surface pieces – Stores obstacles for given training session – Allows for portability of course

11. Tracking System Design Tracks what surfaces are connected and where obstacles are using micro switches embedded in surface pieces – Microcontroller – Printer prints out the course setup – Makes the setup repeatable for tracking physical therapy progress

12. Tracking Form Filled out by PT after course set-up Can be used in conjunction with automatic tracking system or alone

13. MetricSpecsHow Accomplished Fatigue Life/Product Lifemore than 3 years connector life, foam life, button life, surface life Storage Dimensions1'x5'x5' (table) and/or 3'x5'x8' (wall) 43.5"x29.5"x47.5" storage cart Stiffness of Surfacesat least as stiff as 2 inches of gym matno foam thicker than 1.5 inches Sharp Edgesdull edgesfillet corners, no pointy obstacles Height of Obstacle to Step Over0-6 incheshighest is curb at 6 inches Maximum Slip Distancebetween 1-3 inchesmax slip distance = 2 inches Material StrengthAll factors of safety greater than 1.0structural analysis done for Surface Structure and Obstacle Peg Time of Operation on Power Supply0-5 minutesinfinite on 120V outlet on wall Length & Width of Course14 feet x 3 feet 8"14' x 32" Weightno pieces heavier than 51 pounds46 lb maximum, 25 lb minimum # of Parts< 30 parts8 surfaces, 19 obstacles Time (assembly/disassembly)less than 5 minutesless than 2 min average # of surfaces found in everyday life4-8 different surfaces with 2 repeats6 diff., 8 total # of obstacles found in everyday life at least 12 different obstacles with repeats 19 obstacles # of skill levelsHigh/med/low (3) skill levelsPT subjective Range Length of Surfacesmore than 3 feet3.5" per surface Maximum Dimensions of Obstacles3 feet x 3 feetthrow rug 2'x3' # of Colors1-5 different colorscolored shoes, wires, course itself Costless than $2000 $1767.64 (without printer) Time for System Ready-stateless than 1 minute**instant if all plugs are connected Response Time for Systemless than 1 minute**negligible as long as microcontroller is functioning Training time for System useless than 15 minutes*instruction manual, simple user interface, short training session # of Parameters Trackedsurfaces 3x4, obstacles 5x432 total Time it takes to printless than 1 minute**4.6 lines / second Size of Print-out3" x 5" (size of normal receipt)relative size of a receipt Dimensions of Printer/Processorless than size of inkjet printerlabel size printer Compatibility with parallel barsless than 34.5 inchesall pieces 32 inches wide Verification of Specifications

14. Majority of specifications inherently met based on design Specifications requiring verification related to major customer needs – Safety – Portability – Ease of Use/Set-Up Time – Tracking System Verification of Specifications

15. Circuit Board Testing Visual Feedback Test Set-up Circuit Board Verification of Specifications

16. Budget: Spent $1768 (~$230 left for printer) Set-up Time: (< 5 min) Surface Piece Weights: (LI < 3) Average Set-up Time (min) MaleFemale 1.701.87 SurfaceWeight (lb) Carpet25 Hardwood36 Ice37 Concrete27 Gravel46 Gym Mat30

17. Set-up Task Analysis: 46 lb Piece, Center of Cart Verification of Specifications 95 th Percentile Male:50 th Percentile Female:

18. Set-up Task Analysis: 46 lb Piece, Edge of Cart Verification of Specifications 50 th Percentile Female:95 th Percentile Male:

19. Project Finalization Due to constraints on manufacturing, there is still some construction remaining Plan for Next Week: Finish Remaining Surface Pieces & Obstacles Test Functionality of Embedded Circuitry Deliver Course to Nazareth - minus components needed for independent study

20. Project Evaluation Weaknesses Course is not automated for tracking No printout is provided for PT Certain pieces are heavier than optimal weight Underestimation of manufacturing and programming necessary for design

21. Project Evaluation Strengths Course is repeatable, reconfigurable, and manually trackable Various difficulties, terrains, and obstacles are present Course is portable and storable Challenging for patients yet safe for all involved WE HAVE THE DOG

22. Future Improvements More durable micro switches Lighter surface pieces Use Printed Circuit Boards Independent study to finalize micro controller & implement printer – Embedded circuitry already present

23. Questions?