Office of the Dean of Students (ODOS) Design Review

1. Office of the Dean of Students(ODOS) Design Review

2. Agenda Overview of Office of the Dean of Students Overview of team Adjustable Bookshelf (ABS) Global Positioning Device for the Visually Impaired (GPS-DVI) Interactive Campus Map (ICM) ODOS

3. Project Partner: Office of the Dean of Students To provide academic and personal services to Purdue students Meets with students with disabilities to make sure their needs are met. ODOS

4. Team Overview: ODOS Designs projects that will make the campus more accessible to students ODOS

5. Team Overview: Organization Andrea Ebert ABS GPS ICM Evan Helmeid Chris Chen Rachel Tenbarge Andrea Ebert Zach Cassiday Ryan Weinschenk Joe Yu ODOS Jaimin Sevak Jason Lee Yuhang Pan

6. Global Positioning System for the Visually Impaired(GPS-DVI) Design Review

7. Introduction Chris Chen Project Leader Junior – ECE Andrea Ebert Junior – AAE Joe Yu Junior - ECE GPS - DVI

8. Project History Started in 2000 Dropped in 2005 Accurate enough GPS not publically available for reasonable price Picked up again Fall 2008 GPS - DVI

9. Community Need Purdue lacks a formal orientation and mobility class for students with disabilities Independently guide students with visual disabilities around campus Takes these students 6 or more times to walk paths alone GPS-DVI

10. Goals of the project Navigate student from one building to another Tours around the campus in various areas Ability to customize paths for individual students Give student all the necessary information Include types of intersections High traffic areas Changes of path materials eg. Grass, curbs, ect. GPS-DVI

11. GPS Device Current Device eTrex Legend HCX Problems No way to produce audio output Can not upload Purdue’s map GPS-DVI

12. Purdue’s Map on eTrex GPS-DVI

13. Goals of the project Be hands free Fit into sash High enough accuracy to bring student to door and correct major veering Have non-visual input and output methods GPS-DVI

14. Goals of the Project Success Interaction without sight Contains all necessary information Deliverables Sash containing GPS device Speaker Input device (possibly keyboard) GPS-DVI

15. Project Specifications GPS-DVI

16. Systems Overview GPS-DVI

17. Systems Overview GPS-DVI

18. Design Overview: GPS Device Other Devices HP iPAQ 4150 or Dell Axim X50 Solves Text to speech capability Input compatibility Potential Problems GPS not accurate enough

19. Design Overview: GPS GPS-DVI

20. Design Overview: Paths Must identify Intersections Include type, such as unprotected, no turn on red, etc. Changes of path material Curbs, grass, anything that would cause the student to think they may not be following the correct path Warn user of upcoming turns Should be gradual, not sudden GPS-DVI

21. Design Overview: Paths Original design Several tours Customizable routes Problems Does not convey information in a useful format Need more information about paths GPS-DVI

22. Departing from Armstrong. To the left is Northwestern Ave. Crossing a utility drive. Upcoming sidewalk with curb. Turn right, stay on sidewalk. 1 2 Turn left. Approaching loading road. Curb dips to drive. 3 Utility drive to right ending. 4 Turn left to avoid bike path. 5 Turn right, remain on sidewalk. 6 Turn right, remain on sidewalk. 7 Turn left, arriving at ME. Two steps leading to entrance. Double doors.

23. Preliminary Budget GPS-DVI

24. Discussion of future plans This semester Find replacement GPS device with text to speech capabilities Find compatible devices including Text to speech software Speakers Keyboard Finalize a sample path that includes all necessary information GPS-DVI

25. Discussion of future plans Future Semesters Integrate hardware Program paths and information Design a sash to hold hardware Test Spring 2010 GPS-DVI

26. Questions?

27. Adjustable Bookshelf(ABS) Design Review

28. Introduction Project Leader Evan Helmeid A&AE Sophomore Team Ryan Weinschenk ECET Junior Yuhang Pan IE Junior Jaimin Sevak ME Sophomore ABS

29. Project History Origins of project Before Spring 2006 Student using a wheelchair had to throw books onto stationary shelf and have his friends retrieve them ABS Prototype as of Spring 2009, Week 6

30. Project History Prior to Fall 2008 Working prototype Too large to fit on desk Linear actuator is too slow No safety sensor Many designs have been considered Current prototype will be modified for testing of the new design ABS

31. Goals of the Project Help students with disabilities have equal access to residence hall book shelves Create a shelf that: Meets ADA standards for reachability Is safe and usable Is easy to control Can function as well as a standard desk Resembles current residence hall furniture ABS

32. Project Specifications ABS

33. Systems Overview Shelf is attached to a track actuator mounted behind the moving section ABS • Stationary Unit • Moving Shelf Section • Track Actuator • Rails • Sensors • Shelf Stabilizers 3 1 2 4 5 6

34. Functional Decomposition ABS ABS Track Actuator Control Circuits Safety Circuits Up Down Lower Limit Upper Limit

35. Operational Overview ABS Press Button Limit Reached? Plate Active? No No Move Don’t Move Don’t Move

36. Design Overview:Track Actuator Technical Specifications 20” Stroke 2” per second under load 200 lbs. capacity Wired remote Slimmer profile ABS Top: New Track Actuator Bottom: Old Linear Actuator

37. Design Overview:Safety System Simple solution Minimal risk Easy to maintain Prevent Personal injury Damage to foreign objects Misuse ABS

38. Design Overview:Safety System ABS

39. Design Overview:Safety System 3-Part System: Touch-plates on top and bottom Prevent smashing of objects Limit switches Prevent operator from driving shelf beyond a defined range Avoid damage to motor and shelf Pinch/stall detection Detect jamming of track Avoid damage due to excessive loads ABS SPST Micro-Switch

40. Design Overview: Control System Provide easy-to-use controls Accessible/usable by all users ABS

41. Design Overview:Control System Simple up/down buttons Leave very little to go wrong ABS

42. Design Overview:Control System Controls not very elegant Panel mounted or wireless controls? Usability versus durability Thoughts on standardizing controls? ABS

43. Preliminary Budget ABS

44. Project Delivery:Maintenance Plan ABS • Shelf will be examined for flaws tri-annually • Once per term • Contact information is supplied to user • Relevant schematics and documents will be available through EPICS-ODOS • Estimated yearly maintenance costs: negligible

45. Semester Agenda To Do for Spring 2009: Develop a User Manual Finalize the Bill of Materials Deliver Version 1.9 for testing Analyze feedback for V. 2.0 development New Electrical Components Box ABS

46. Discussion of Future Plans Future Semesters: Surface finishing Reduced Electronic Footprint Build new shelf for final delivery Contract out through Purdue? Version 2.0 delivery date: September 2009 ABS

47. Questions? ABS

48. Interactive Campus Map(ICM) Design Review

49. Introduction Rachel Tenbarge Senior, Electrical Engineering Zach Cassiday Junior, Electrical and Computer Engineering Jason Lee Freshman, First Year Engineering ICM

50. Project History Origins of project The Project Partner needed an easily accessible computer mapping system to allow for the easy travel of students, faculty, and visitors of Purdue University who have disabilities. It was deemed completed in 2005 but was brought back for maintenance. ICM