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P13027: Portable Ventilator

P13027: Portable Ventilator. Team Leader: Megan O’Connell Matt Burkell Steve Digerardo David Herdzik Paulina Klimkiewicz Jake Leone. Overview. Project Scope-Background 13026 Foundation slide Proposed redesign Customer Needs Engineering Specs Risk Assessment HOQ/QFD Diagram

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P13027: Portable Ventilator

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  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? 2 of43

  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 3 of43

  4. MEDIRESPIII 13026 PEV 4 of43

  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 5 of43

  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 6 of43

  7. Customer Needs 7 of43

  8. Engineering Specifications 8 of43

  9. Risk Assessment 9 of43

  10. 10 of43

  11. HOQ/QFD Diagram 11 of43

  12. System Block Diagram 12 of43

  13. Functional Decomposition 13 of43

  14. Top Level Functions 14 of43

  15. Provide Airflow 15 of43

  16. Monitor Feedback 16 of43

  17. Communicate State 17 of43

  18. Manage Power 18 of43

  19. Battery Selection Pugh Chart 19 of43

  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 20 of43

  21. Flow Sensor Type Pugh Matrix 21 of43

  22. Pneumatic Schematic 22 of43

  23. Differential Pressure Sensor Model Inlet Filter PUMP Exit DP Pressure Sensor Pressure Sensor 23 of43

  24. Two Pressure Sensors Model Inlet Filter PUMP Exit Pressure Sensor Pressure Sensor 24 of43

  25. Pressure Sensor Pugh Matrix 25 of43

  26. PCB Selection Pugh Chart 26 of43

  27. MCU Selection PUGH General Notes: All MCU rated for -40° to 105° C 27 of43

  28. Data Transfer PUGH 28 of43

  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) 29 of43

  30. CO2 Sensor Pugh Matrix 30 of43

  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 31 of43

  32. Housing Modifications • Smaller components = smaller package 32 of43

  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 33 of43

  34. Housing Modifications 34 of43

  35. Housing Modifications 35 of43

  36. Housing Modifications 36 of43

  37. Housing Modifications 37 of43

  38. Housing Modifications 38 of43

  39. Housing Modifications 39 of43

  40. Housing Modifications 40 of43

  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 41 of43

  42. Usability Study Breakdown 42 of43

  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? 43 of43

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