Virtual Reality Data Glove S ystem Design Review

1. MSD1 Group P14546 Virtual Reality Data GloveSystem Design Review

2. Introductions

3. Agenda • Project Overview - Background • Problem Statement & Deliverables • Market Analysis • Customer Needs • Engineering Requirements • System Analysis • Engineering Matrix • Functional Analysis • Concept and Architecture development • Engineering Analysis • Risk Assessment • Test Plan • Project Plan

4. Background

5. Current Concept • Virtual Reality is used to simulate 3D environmentsusing multiple cameras, sensors, and immersive displays • Most people know it from video games but it can be used for research applications • Relate eye movements to their corresponding body movements • Training in specialized tasks • Healthcare • Current techniques use markers in combination with cameras to track hand motion • In some positions, markers are occluded from optical view, resulting in missing data points

6. Current Concept

7. Problem Statement • Current State • Current techniques use active markers with cameras to track hand motion • Desired State • The project will focus on providing a functional prototype that is lightweight, durable, and relatively inexpensive • The glove will not interfere with user’s natural hand movements • Sensors transmit motion data to the computer for analysis • Project Goals • Analyze current designs • Identify opportunities for improvement of benchmarked designs • Lighter • Better data rate • More accurate • More sensors • Constraints • Must be able to stay within budget means

8. Additional Deliverables • Functional Prototype that will be used in the center for imaging science for the Virtual Reality room • Test Data verifying correct operation • User manual for operation

9. Stakeholder(s) • Primary Customer: Gabriel Diaz • Contact: Gabriel.Diaz@rit.edu 585-317-3595 • Secondary Customer: Susan Farnard • Contact: Farnard@cis.rit.edu 585-475-4567 • Faculty Guide: Ed Hanzlik • Contact: echeee@rit.edu 585-475-7428 • Sponsor (financial support): RIT

10. Open Items From Last Review • Refine Customers needs, Engineering Requirements and relationship matrix • Benchmark what types of sensors we could use • Accuracy of them • Cost • Feasibility • Find a better name than VRDG • See Virtual Reality room in person • This morning

11. Customers • Military Training • Medical Students for training • Gamers • Film • Education • Research (our focus)

12. Market Trends • Market for Virtual Reality and VRDG • 2013: $0.9 billion • Projected 2018: $1.06 billion • Categories of markets • Gaming • Research/Learning • Military

13. VRDG Market Leaders

14. Customer Requirements

15. Engineering Requirements

16. Benchmarking Specs

17. System Analysis

18. Relationship Matrix

19. Functional Decomposition

20. Alternatives Considered

21. Alternatives Considered

22. Alternatives Considered

23. Alternatives Considered

24. Alternatives Considered

25. Pugh Chart

26. Pugh Chart

27. Selected Concept Concept #1 Pros: • Uses Flex Sensors • Finger flexion • Wrist flexion • Commonly used in other models currently on the market • Camera Markers for wrist rotation • Lightweight • Accurate • Positional Sensors • Fits multiple hand sizes without the need for multiple gloves Cons: • Springs for finger separation • May not be safe • May impede natural movement

28. Selected Concept Concept #4 Pros: • Camera Markers for wrist rotation • Lightweight • Accurate • Adjustable Knuckles • Fits multiple hand sizes without the need for multiple gloves • Sensors between fingers • Safer than springs • Skeleton figure • Easily repairable Cons: • Uses Hall-effect Sensors • Finger flexion • Wrist flexion • Not as accurate as flex sensors • Sensors between fingers • May impede natural movement

29. Power Supply Concept Architecture • User • Glove • Sensors • Fingers/Wrist • Processor • Computer Interface • Outputted Data

30. Engineering Analysis Needed • The amount of force hands require to open and close • To determine the force it would take to restrict movement • Determine best material for glove to minimize wear while retaining comfort • For not restricting natural hand movements and to be comfortable • Determine current and voltage needed to operate system • To determine if USB can be sufficient enough power • Estimate system weight • To determine if glove would be too cumbersome for the hand • Determine data rate transfer of sensors and microprocessor • Finding correct digital converter and microcontroller • Determine sensor and microprocessor size restrictions • Find area it covers and compare them with fingers size • Determine what is a feasible for a range of accuracy for sensors • Review sensors, digital converters, chip, and microcontrollers and add up maximum error

31. Risk Assessment

32. Test Plan Outline • Test accuracy of sensors • Verify +/- degree error • Test robustness of glove • Fatigue test or find SN curve of glove • Test sensors ergonomics • Put on fingers and see if they restrict movement • Too heavy, too big for fingers, etc.. • Test if USB is enough power for the system or if a additional power source is needed • Plug it into the microcontroller and see if it works

33. Project Plan (WK 6-9)

34. Current Concepts for VRDG

35. Questions?