Download - P13675 Bike Helmet Mirror System
P13675Bike Helmet Mirror System
Rob Fish (Industrial Designer) Zachary Kirsch (Mechanical Engineer, PM) Martin Savage (Mechanical Engineer) Olivia Scheibel (Mechanical Engineer) Henry Woltag (Industrial and Systems Engineer)
Team
Guide◦ Mr. Rick Lux
Customer◦ Dr. B. Brooks
Faculty Support◦ Dr. M. Gomes◦ Dr. M. Lam
Sponsor◦ RIT MSD Project Office
Guides, Advisor, Sponsor
Introduction and Project History Customer Needs Concept Selection Risk Assessment
Outline
Current rear view mirrors systems for bicycles are clumsy, unattractive, poor quality, too expensive, or have a small viewing range.
Our solution is to create a low cost alternative that requires no power to operate,
and attaches to anyhelmet.
Mission Statement
Background
Background
AdjustableOver-head system
Green ProcessDesign For Disassembly
RecyclabilityNo Power Input
Env. Friendly Materials
Environmental Considerations
Fog / Rain Resistant
Withstand Elements
Ability to block out Sun
Doesn't Increase Wind Resistance
MarketabilityInexpensive
Easy to Store
Aesthetically PleasingColors
Shape
Customizable
Ergonomics
Comfortable
Light Weight
Safe to Ware
Functionality
Doesn’t Compromise Helmet Integrity
Adjustable w/o ToolsHolds Mirror Orientation
Adjustable w/o Tools
Provides Wide Viewing Angle
Detaches from HelmetAdjustable Mirrors
Adjustable MirrorsClear, Correctly Oriented Image
Attaches to Multiple Types of Helmets
DurableMinimizes Obstruction
to Forward view
Affinity Diagram
Customer NeedsCustomer Needs Team’s
Evaluation1. Safe to wear 92. Provides a wide angle view behind the cyclist 93. Holds mirror orientation as set by user 94. Minimizes obstruction to the cyclist’s forward field of vision 95. Attaches to a typical helmet without compromising the helmet’s integrity 96. Is lightweight and comfortable to wear 97. Is durable 98. Provides a clear, correctly oriented image 99. Is adjustable to provide optimal view for the rider 910. Is inexpensive ($10-20) for the consumer 311. Detaches from the helmet 312. Can be adjusted without the use of tools 313. Requires no power input 314. Is aesthetically pleasing 315. Refrains from significantly increasing wind resistance 116. Is fabricated in an environmentally friendly way 1
Engineering SpecificationsSource Specification (Metric) Unit of
MeasureMarginal
ValueIdeal Value
Comments/Status
S1 CN 13 Power required for operation Watts - 0 No power input
S2 CN 12 Number of tools required for adjustment Quantity 1 0
S3 CN 10 Materials cost Dollars 30 20Market value projection, no
restriction on prototype beyond budget
S4 CN 2,5,11 Number of helmet styles system can attach to Quantity - 3 Minimum value
S5 CN 1,5,7 Durability - survive drop from height ft - 6 Dropped with mirror system attached to helmet
S6 CN 1,6 Weight lbs 0.775 0.175
S7 CN 1,3,7,15 Survive wind speeds mph 45 60Mirrors maintain desired
position and orientation up to these speeds.
S8 CN 1,5,11 Breakaway force (if snagged on object) lbs - 45 Based on NHTSA neck injury
criteriaS9 CN 2,3 Rear image angle degrees 90 110 Based on benchmarking
S10 CN 1,4,15 Projected area of main mirror in direction of motion in2 18 8
S11 CN 16 Recyclability of materials used % - 100 Exceptions: mirrors, adhesives
S12 CN 1,5,7,11,12 Mirrors and supports removable from helmet Yes/No - Yes
Interface between helmet and supports need not be
removableS13 CN 1,4 Lateral forward viewing angle degrees - 180 Does not block lateral vision
when looking straight aheadS14 CN 2,3,8,9 Distance behind at which vehicles are
visable ft 100 200 Based on hand calculations
S15 CN 1,3,8 Image oriented properly Yes/No - Yes
Functional Decomposition
Morphological Chart
Concept Selection
Risk AssessmentID Risk Item Effect Cause
Likelihood
Severity
Importance Action to Minimize Risk Owner
1
Improper mirror orientations and alignment.
Image may be inverted, out of focus, or the projected image may not line up with target.
Lack of optics experience within the team
3 3 9Research optics, determine faculty and other experts who can assist with optical design.
Martin Savage
2Improper structural design.
System may not be structurally sound, natural frequency may pose stability issues.
Lack of vibration experience within the team
3 3 9Research vibrations, determine faculty and other experts who can assist with structural design.
Olivia Scheibel
3
Exceeding the desired manufacturing cost.
System will be unable to be manufactured within desired price range.
Cost of materials to build system
3 2 6 Research lower cost alternatives for system components.
Zachary Kirsch
4Unable to adhere to NHTSA standards
Prototype unable to be manufactured for retail
Strict standards conflicting with stability needs
2 3 6 Be knowledgeable of applicable standards.
Henry Woltag
Risk Assessment
ID Risk Item Effect Cause
Likelihood
Severity
Importance Action to Minimize Risk Owner
5 Parts are ordered too late
Prototype cannot be completed in time
Item lead times not taken into consideration
2 2 4No procrastination. Parts needed identified as early as possible. Order well in advance.
Henry Woltag
6 Do not meet Customer needs
Dissatisfied customer.
Poor needs identification/ inability to achieve needs in time
2 2 4Be sure to properly and realistically identify customer needs, not just ideal needs.
Zachary Kirsch
7 Poor documentation
Disorganization, future project improvement difficult
Consistent lack of documentation updating
2 1 2Documentation will be kept consistent through weekly checks of notes/files/ previous notes.
Henry Woltag
8 Group DysfunctionProject does not get completed to required specifications.
Lack of Communication. Poor Compromising.
1 1 1
Consistent communication and project duty management. Expected to complete individual responsibilities.
Zachary Kirsch
Pareto Risk Analysis
0
5
10
15
20
25
30
35
40
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Risk Rating Cumulative Percent
Ratin
g
ScheduleSu M T W R F S Su M T W R F S Su M T W R F S Su M T W R F S
Meet Group and GuideIdentify Team LeaderBecomer Familiar with EDGEPrepare Code of EthicsIdentify CustomerIdentify Customer NeedsIdentify Engineering SpecificationsPrepare Function DecompositionPrepare Affi nity DiagramPrepare Morphological and Pough ChartsConcept SelectionAsses Risks and MitigationSystems Design ReviewReevaluate System DesignSelect Optical SystemSelect Frame SystemPerform optical analysisPerform structural analysisPerform CFD analysisPrepare Bill of Materials Create CAD modelsDetailed Design ReviewReevaluate Detailed DesignOrder Materials
MSD-P13675: Bike Helmet Mirror System Week 1 Week 2 Week 3 Week 4
ScheduleSu M T W R F S Su M T W R F S Su M T W R F S Su M T W R F S Su M T W R F S Su M T W R F S Su M T W R F S
Meet Group and GuideIdentify Team LeaderBecomer Familiar with EDGEPrepare Code of EthicsIdentify CustomerIdentify Customer NeedsIdentify Engineering SpecificationsPrepare Function DecompositionPrepare Affi nity DiagramPrepare Morphological and Pough ChartsConcept SelectionAsses Risks and MitigationSystems Design ReviewReevaluate System DesignSelect Optical SystemSelect Frame SystemPerform optical analysisPerform structural analysisPerform CFD analysisPrepare Bill of Materials Create CAD modelsDetailed Design ReviewReevaluate Detailed DesignOrder Materials
Week 10 Week 11MSD-P13675: Bike Helmet Mirror System Week 5 Week 6 Week 7 Week 8 Week 9