P13027: Portable Ventilator

1. P13027: Portable Ventilator Team Leader: Megan O’Connell Matt Burkell Steve Digerardo David Herdzik Paulina Klimkiewicz Jake Leone

2. Overview • Project Scope-Background • 13026 Foundation slide • Proposed redesign • Customer Needs • Engineering Specs • Risk Assessment • HOQ/QFD Diagram • System Block Diagram • Function Decomposition • Pugh Diagrams • Battery • Pressure Sensors • Circuit Board • MCU • CO2 Measurements • CAD Visuals • Usability Study at Imagine RIT • Questions?

3. Project Scope Project Objective: Improve the current design of P13026 Duration: 27 weeks Market Release: 2015 Budget: $1000 Customer: Jeff Gutterman Roman Press Faculty Mentor: Edward Hanzlik Team: 4 Mechanical Engineers 2 Electrical Engineers

4. MEDIRESPIII 13026 PEV

5. From 13026 -> Our Foundation to Build On Updates: • Electronic controls (decrease size/more options) • Smaller pump • Reliable and smaller battery (2+ hours) • Device ergonomics and usability Additions: • Ability to monitor and record vitals • Pulse oximeterfeedback • Signaling alerts

6. Revision B- Proposed Redesign Update: • Battery Size-> Reduce Size & keep same capacity • Reduce Circuit Board size-> Create custom board for all electrical connects • Phase motor driver to a transistor • Display Ergonomics • Overall Size and shape of PEV • Instruction manual Additions: • Visual Animated Display-> Moving Vitals • Memory capabilities • USB extraction of Data • Co2 Sensor as additional Feature to PEV • Overload Condition due to Pump Malfunction

7. Customer Needs

8. Engineering Specifications

9. Risk Assessment

11. HOQ/QFD Diagram

12. System Block Diagram

13. Functional Decomposition

14. Top Level Functions

15. Provide Airflow

16. Monitor Feedback

17. Communicate State

18. Manage Power

19. Battery Selection Pugh Chart

20. Batteries: Lithium-Ion Polymer • Very low profile - batteries resembling the profile of a credit card are feasible. • Flexible form factor - any reasonable size can be found • Lightweight - gelled electrolytes enable simplified packaging by eliminating the metal shell. • Improved safety - more resistant to overcharge; less chance for electrolyte leakage

21. Flow Sensor Type Pugh Matrix

22. Pneumatic Schematic

23. Differential Pressure Sensor Model Inlet Filter PUMP Exit DP Pressure Sensor Pressure Sensor

24. Two Pressure Sensors Model Inlet Filter PUMP Exit Pressure Sensor Pressure Sensor

25. Pressure Sensor Pugh Matrix

26. PCB Selection Pugh Chart

27. MCU Selection PUGH General Notes: All MCU rated for -40° to 105° C

28. Data Transfer PUGH

29. LCD Interface: RGB vs Parallel • Two different interfaces commonly used in LCD displays are RGB (no controller) and Parallel (built-in controller, ex. SSD1963)

30. CO2 Sensor Pugh Matrix

31. GE Sensing Telaire 6004 Co2 Sensor (~$25) Non-Permeable Seal NDIR Co2 Measurement Wiring Exhale From Patient ASCO Pneumatic Disposable In-line Filter Send Reading To PEV System MCU

32. Housing Modifications • Smaller components = smaller package

33. Housing Modifications • Old Physical Extremes: • 15in long X 10in high X 7in deep • Target Weight: 17 pounds • New Physical Extremes: • 11in long X 6.75in high X 7in deep • Target Weight: 10 pounds

34. Housing Modifications

35. Housing Modifications

36. Housing Modifications

37. Housing Modifications

38. Housing Modifications

39. Housing Modifications

40. Housing Modifications

41. Usability Testing At Imagine RIT Goal: Gather data to understand the overall feasibility of the PEV user interface design and styling. Critical Components of Design: Overall Geometry Knob Controls and Display Knob Location Screen Location Screen Function- Vitals Display Verbage Clarity Color

42. Usability Study Breakdown

43. Interactive Knob Board Value displays on screen MEDIRESP III MEDIRESP IV Feedback: Which is easiest to use? Is there a distinction conflict in certain knob design? Opinion of overall aesthetic?