By: Sadaf Mackertich Jeffrey Herbert Peter Bowlin Lemuel
Lebron
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In layman's terms it is an instrument that measures gloss. By
reflecting a light source off of a glossy object twice, second time
through a polarizing lens, it is possible to measure the intensity
of the light.
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Gloss is used as a criterion in industries to evaluate the
quality of a product Human evaluation = subjective w/ many sources
of error Solution-- automated device to remove human element and
provide results that are: Objective Accurate Consistent
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RIT Imaging Science Dept. had experimental technology to obtain
quantitative measurements of gloss Cumbersome; not user-friendly
Needed a way to commercialize the process In April 2008, a senior
design team started a prototype that was user-friendly, robust,
compact, automated, and reliable Device was half-completed we
picked up where they left off
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Functional Decomposition Measurement Process Customer Needs
Specifications House of Quality Pareto Chart Morphological Analysis
Assignment of Tasks Concepts Pugh Chart (Concept Selection
Screening) Risks Gantt Chart
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Solutions 1234 Sub Functions 1 Automating sample Holder Two
rollers used to feed the paper around one roller Utilize printer
roller system PVC rod stock with holder attached to motor and track
to hold sample against the pvc Aluminum rod turned and bolted to
housing using motor and track 2 Automating Light Fixture/RGB
Rotating wheel by servo motor. The wheel would have 3 LED or color
lenses to shoot light into cable Use mirrors in a tunnel towards
the fiber optic cable to funnel the light from any LED without
movement Place rectangular led bank onto a track and move with
motor and gear to change light color Rotating LED wheel 3
Automating F- Stop, Zoom and Focus Servo motor without
micropositioner, located next to the camera on the mount Clamp two
semicircular aluminum rings onto f-stop control and with attached
bar with track attached to gear and motor assembly Bore gear and
attach around the camera and place a servo motor next to it with a
worm gear Use easily available hose clamp and worm screw to act as
gear and worm gear 4 Automating Polarizing Lens Lens flip upwards
towards camera using a step or servo Step motor connected to track
on bottom of housing with rod connecting to polarizing lens rod
Attach track and gear on current system Pneumatic pressure cylinder
mounted in line with current system 5 Light Bar Polarizing lens
holder Windowed slit for easy replacement Simple hanger holder
Rectangular aluminum stock with slit cut in top Bolt small piece of
steel alongside light bar track and attach using magnets 6 Software
Integration Java Plugin with ImageJ Libraries Labview document 7
Housing for Devise Keep it in a metal box with a flip-up lid Use
plastic as a lighter material Use previous housing 8 Output Display
A separate workstationPrint out from computerMounted screen
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Sub Function NumberSub FunctionAssigned Group Member
1Automating sample HolderJeff 2 Automating Light Fixture/RGB Sadaf
3 Automating F-Stop, Zoom and Focus Jeff/Sadaf 4Automating
Polarizing LensPete 5 Light Bar Polarizing lens holder Pete
6Software IntegrationLem
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Automating Sample Holder Screening Selection P11541
Microgoniophotometer Concepts ABCD Reference Selection Criteria2
roller design Aluminum Rod with sample holder and gear trackPrinter
rollerold design Ease of sample load 0++ Cost --- Durability +++
Ease of setting adjustments -+- Repairability +0- Reliability -+0
Sum + 's2.004.002.00 Sum 0's1.00 Sum -'s313 Net Score3 0 Rank212
Continue?noyesno
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Light Fixture Screening Selection P11541 Microgoniophotometer
Concepts ABCD Reference Selection Criteria Rotating Wheel
Rectangular w/ Track mirror enclosedold design Cost--+
Durability00+ Ease of setting adjustments+++ Repairability00+
Reliability00+ Complexity--+ Automation Enabled+++ Sum + 's2.00
7.00 Sum 0's3.00 0.00 Sum -'s220 Net Score00 0 Rank221 Continue?no
yes
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F-Stop and Zoom Screening Selection P11541 Microgoniophotometer
Concepts ABCD Reference Selection Criteria Pinned Rod connection
Gear mounted on cameraGears behind camera hose clamp and worm gear
Cost+00+ Durability000+ Ease of setting adjustments0000
Repairability000+ Reliability0+0- Complexity--0+ Sum + 's1.00
0.004.00 Sum 0's0.00 Sum -'s1.00 01 Net Score0003 Rank3241
Continue?noyesnoNo inaccurate
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Automating Polarizing Lens Screening SelectionP11541
Microgoniophotometer Concepts ABC Ref Selection Criteria Lens flip
up towards cameraActuator Attach track to bottom of housing and use
a rod Cost0-0 Durability-+0 Ease of setting adjustments0+0
Repairability+-0 Reliability-+0 Complexity+-0 Sum + 's2.003.000.00
Sum 0's2.000.00 Sum -'s230 Net Score000 Rank211 Continue?noyes
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Lightbar Polarizing Lens Holder Screening Selection P11541
Microgoniophotometer Concepts ABCD Ref Selection Criteria Magnetic
Attachment Simple Hanger Holder TapeClamp and bolt Cost 0-0-
Durability ++0+ Ease of installation 0-0- Repairability +-0-
Reliability ++0+ Complexity 0-0- Sum + 's3.002.000.002.00 Sum
0's3.000.00 Sum -'s0404 Net Score3-20 Rank1232 Continue?yesno
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IDRisk ItemEffectCause Likelihood Severity Importance Action to
Minimize RiskOwner 1 Interference with motors and housing Fail to
automate device Imprecise measurements 224 Double and triple check
measurements and specifications Jeff, Sadaf, Pete 2 Fail to
incorporate all software aspects Cannot deliver one simple to use
executable file Extremely difficult to program within time frame
326Meet with software professionalsLemuel 3Parts fail to meet
criteriaFail to automate device Incorrect part was ordered or
delivered 122Check orders before submissionSadaf, Pete 4 Sample
loader destroys samples Function of the device is lost Flawed
design122 Test on thinner paper and create a factor of safety Jeff
5 Sample holder fails to keep sample tight to cylinder surface
Cannot acquire a proper measurement Flawed design212Check prototype
and modify as necessaryJeff 6 Sample loader changes parameters
Cannot acquire dataFlawed design212 Make sample loader adjustable,
benchmark design and relate to software Jeff, Sadaf 7Imprecise
MotorsIntroduce large errors Incorrect choice of motors 122Check
motor precision before purchasePete, Sadaf 8Motors break camera
Project will be set back until new camera is purchased Incorrect
choice of motors 133Check motor power before purchaseSadaf, Jeff,
Pete 9Damage to CircuitryCannot operate device Improper program of
circuitry or water damage 133Create cover for circuitryLemuel
10LEDs burn outLimits test spectrum rangeOveruse111Create easy to
change LED holdersLemuel 11Fiber Optic bar breaksCannot test
samplesImproper installation133Purchase a new light bar Jeff,
Sadaf, Lemuel, Pete 12Camera optics breakProject cannot
continueImproper installation133 Purchase a new camera with known
F- Stop Jeff, Sadaf, Lemuel, Pete 13Fail to machine parts
correctlyFail to automate machineIncorrect measurements224Purchase
cheap, replaceable partsJeff, Sadaf, Pete