Track Timer Finial Semester Presentation Senior Design II November 29, 2011.
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Transcript of Track Timer Finial Semester Presentation Senior Design II November 29, 2011.
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Track TimerFinial Semester PresentationSenior Design IINovember 29, 2011
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Team Members
John RoseElectrical EngineeringVDIPPower System
Jonathan MoorheadComputer EngineeringEnclosureKeypad Interface
Michael NguyenElectrical EngineeringTiming AccuracyVDIP
Chad PumphreyComputer EngineeringVDIPLCD Interface
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Advisor
Dr. FollettAssistant Professor
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OverviewBackground Problem Solution Constraints
◦Technical ◦Practical
System Testing Enclosure Production Questions/Comments
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Background• Starkville High School has previously had to borrow timing systems for their races.
• Even today, they do not have a timing system for practical and competitive usage.
•Dr. Follett has experience with timing devices.
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Problem• Timing Systems cost over $500.
• The thermal printer and the recurring cost of thermal paper.
• High School’s Physical Education program cannot afford this type of equipment.
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Solution• To develop a cost effective timing system for high school and other teams with limited budgets.
• Replace Thermal printer with removable non-volatile media.
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Hardware Block DiagramPlunger Inputs
Keypad
Display
Microcontroller
Storage
Power Supply
External Timer
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Technical ConstraintsName DescriptionTiming Accuracy Timer must have an accuracy of 0.01 seconds
after 10 minutes of continuous running.
Battery life Batteries must operate for at least 12 hours.
Display Characteristics Display must be visible in mild outdoor conditions.
Push Button Push Buttons must be a single momentary switch, and their cords must be at least 12 feet in length or more.
Data Storage Memory must store at least 8,000 times.
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Practical ConstraintsType Name Description
Economic Cost Total prototyping price must be under $400.00.
Environmental Operating Conditions The Track Timer must be weather resistant.
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The Competition, Sprint8 price $969.00 [1].
The Track Timer has taken less than $400.00 to prototype.
Economic
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Environmental Intended for outdoor usage.
Must be Weather Resistant.
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System TestingLab Test
Accuracy Test Battery Life USB drive malfunction check
Field Test Track & Cross-Country Time-Position Matchup on Computer Report Durability Test LCD Visibility
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Synchronous, Start
1 32
Lab Test- Accuracy Test
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Lab Test - Battery Life
0.0 0.8 1.7 2.5 3.3 4.2 5.0 5.8 6.7 7.5 8.3 9.2 10.0 10.8 11.7 12.5 13.33.804.004.204.404.604.805.005.205.405.605.806.006.206.406.60
Battery Test
Without PMOSWith PMOS
Hours into test (hours)
Batt
ery
Volta
ge (
V)
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Field Test - EventsSeptember 29, 2011 – Initial Field
Testing
October 22, 2011 - Starkville High School Hosts a Cross-Country Meet.
October 29, 2011 - Run for Education
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Field TestStarkville Cross-Country Meet - October 22, 2011
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Field TestRun For Education - October 29, 2011
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System Testing Achieved Technical Constraint
Accuracy Battery LifeDisplay Characteristics
Achieved Practical ConstraintDurabilityEnvironmental
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EnclosureModified a Pre-Made Enclosure
Laser Printer ◦Model A◦Model B
3-D Printer
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Enclosure
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Enclosure
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Enclosure
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Enclosure
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Enclosure
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Enclosure
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Packaging All Inclusive
◦ TrackTimer Device◦ 8 RJ11 Plungers◦ 2 Mini-USB drives (4GB/each)◦ 4 AA Batteries◦ User Manual
Software w/ Barcode Scanner◦ Meet Manager
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Bill of Materials[2]
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Reference[1] Stopwatch Central.”Sprint Timing Systems” Sprint 8 Track
Package. 2011. http://www.stopwatchcentral.com/sprint/sprint.htm[2] www.Digi-key.com
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Questions ?? ??