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SYSTEM DESIGN REVIEW FRIDAY, JANUARY 15, 2010 RYAN MILLER – ME, PROJECT MANAGER CHRIS OXLEY – EE, LEAD ENGINEER RYAN ENYEART – ME, SYSTEM ENGINEER ALEX MANLEY – EE, SYSTEM ENGINEER P10057 – Monitoring Device for Human Smoking Behavior
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Agenda Introduction and Summary Work Breakdown Structure Customer Needs and Technical Specifications P10054 Prototype Design Concept Selection and System Design MSD I Schedule Risk Assessment Q&A
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Work Breakdown Structure DIP Measurement (RM/RE) Chest Volume Measurement Cigarette Flow Measurement Airflow Manipulation (RE) Pressure Sensing (CO) Temp Sensing (CO) Packaging (RM) Airflow Path Packaging Electronic System Packaging Signal Processing System Control (CO) Filtering (AM) Amplification (AM) Data Storage (AM)
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Needs and Specifications https://edge.rit.edu/content/P10057/public/P10057_House_of_Quality
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System Level Design, P10054
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Concept Selection – Airflow Path Option Accuracy Cost Complexity Size Ease of Cleaning / Particulate Buildup Ease of Integration Availability SUM Metal Orifice Plate (CReSS)00000000 Plastic Orifice Plate-+00-+00 Vortex Flow Meter0-------6 Turbine Flow Meter+-----0-4 Calorimetric Flow Meter+-0---0-3
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Concept Selection – Microcontroller Model Cost Size Low Power Consumption Ease of Implementation Low supply voltage capability (~3V) SUM Arduino Duemilanove w/ Atmel ATmega328P000000 Standalone Atmel ATmega328P-+0-+0 TI MSP430 standalone microcontroller-+0-+0 PICAXE development kit with Microchip PIC+00001 Standalone Microchip PIC controller-+0-+0
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Concept Selection – Chest Volume Device Option Cost Accuracy /Sensitivity Ease of Use / Required Training Comfort / Interference Repeatability of Position Ease of Manufacturing/Procurement Custom Parts Needed Electrical Simplicity SUM Strain belt000000000 RIP belt0TBD+++00+4 Strain belt x2-TBD0--00--4 RIP belt x2-TBD+--00--3
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Concept Selection – Hand Piece Option Ease of Integration Ease of Manufacturing/Procurement Tool Cost Unit Cost, 1-100 Units Unit Cost, 100+ Units SUM Rapid Prototyping / 3D Printing000000 Injection molding+0--+0 Blow molding-0--+-2 Vacuum forming++--+1
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Concept Reduction – Plastics Manufacturing Option Weight RapidPrototyping /3D Printing 3D CNCMachining InjectionMolding Vacuum /PressureForming Tool Cost 0.14312 Unit Cost, 1-10 Units 0.134312 Unit Cost, 10-100 Units 0.153412 Unit Cost, 100-1000 Units 0.11234 Unit Cost, 1000+ Units 0.051243 Part fidelity 0.051342 Lead Time, 1-10 Units 0.124312 Lead Time, 10-100 Units 0.153412 Lead Time, 100-1000 Units 0.11234 Lead Time, 1000+ Units 0.051234 Sum1.001.61.51.11.4
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Concept Selection – Packaging ItemConcepts Cost Size Weight Impact Resistance Heat Resistance Electrical Resistance Water Resistance Ease of Integration Comfort Ease of Manufacturing/Procurement SUM BoxCOTS project box00000000000 Custom plastic-+++++0+++7 Custom Sheet metal-+-+--0+0+0 Internal ProtectionCut foam surrounds-0-+++00001 Foam inserts-0-+0+00000 Brackets-0-+000-0--3 Fasteners-0-+0-0-0--4 Package SealingHigh-density foam in groove-0-++++-0-0 Neoprene sleeve-0-++++-0-0 O-Ring-0-++++-0-0 Rubber seal---+00+000
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Concept Selection – Storage Option Cost Size Power Consumption Data Access Implimentation SUM Micro SD000000 USB0--++0 Onboard Flash-0+---2 Compact Flash--00+
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Concept Selection – Power Supply Option Lifetime Cost Convenience Size Ease of Use Charge Life SUM Disposable Battery000000 Rechargable Battery++0++4 AC+-0-+0
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Concept Selection – Device Activation Option Cost Power Consumption Size Complexity Cigraette Interference Ease of Procurement SUM IR Sensor (1Hz Sample)0000000 Mini-Blade Limit Switch++0+-+3 Capacitive Proximity Switch-0-00+ Mini Punger Type Limit Switch++0+-+3 IR Proximity Switch----00-4
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Elastic/Velcro Fixture Micro SD Data Storage Micro SD Data Storage Arduino Microcontroller Arduino Microcontroller Rechargeable Battery Rechargeable Battery Amp Plastic Hand Piece Plastic Hand Piece Roller/Lever Limit Switch Temp. Sensor Temp. Sensor Pressure Sensor Pressure Sensor Single Inductive DIP Belt Calibration LED User Feedback LED User Feedback System Level Design, v2.1 Alex Manley Ryan Enyeart Chris Oxley Ryan Miller Plastic Orifice Plate Custom Plastic Packaging with Seals
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Project Schedule Revisited https://edge.rit.edu/content/P10057/public/MSDI_project_plan.xlsx
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Risk Assessment https://edge.rit.edu/content/P10057/public/Risk_Assessment.xls
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Questions?
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