Joseph Ratliff EE Software Research PCB Design Obstacle Detection Motion Detection Ryan Crownover EE Coding Logic Motion System Software Design Website.
Post on 19-Jan-2016
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Team Members
Joseph Ratliff•EE•Software Research•PCB Design•Obstacle Detection•Motion Detection
Ryan Crownover• EE• Coding Logic• Motion System • Software Design• Website
Tyler Ross•EE•Hardware Design•Motion Detection•Power System Analysis
Team Advisor
Dr. Raymond Winton
Lee Jones• EE• Hardware Design• PCB Design• Power System
Design
Dr. Randy Follett
Class Professor
OutlineOverviewMarket RequirementsTechnical SpecificationFunctional DecompositionWork ScheduleDesign ImplementationCost AnalysisTestingIssuesSummaryQ&A
Senior Design
2 Semester Product Development
Involves the use of technical skills obtained through the Electrical and Computer Engineering Undergraduate Program
Currently, cooler transportation is time consuming, cumbersome, and exhausting, and the source of these difficulties has gone unchanged for years: human involvement.
Problem
The Kooler Kart will reduce the need for human involvement in a cooler transportation process.
• Hands free
• Designed to be user friendly.
Solution
Market RequirementsManufacturability
The Kooler Kart must satisfy the following requirements:
•Hold the weight of a 25qt cooler (~60lbs loaded)
•Travel at a max speed of 6 mph
The Kooler Kart must be simple enough that someone can operate and charge it, regardless of their knowledge of motion technology.
• Battery Charge Display
• Motor Disengage Option
Market RequirementsUsability
Beacon
Drive System
Microcontroller
Object Sensors
Beacon Sensors
UserKooler Kart
Power
Power Supply
Functional DecompositionSystem Overview
Work ScheduleActual Timeline
Task Sept. Oct. Nov. Jan. Feb. Mar. Apr.
Project Plan
Hardware
Roles
Drive System / Testing
Beacon / Testing
Object Detection / Testing
Packaging
Full Integration
SubsystemsBeacon Detection
Uses Ultrasonic Rangefinder and an RF Link simultaneously
•Ultrasonic•Pulses to receivers to determine the angle of
the user from the kart
•RF Link•Pulses to the RF receiver calculating the
distance the user is from the kart
• Array of 6 Ultrasonic Rangefinders
• Fires consecutively detecting object up to 1m away
SubsystemsObject Detection
Beacon angle and distance found • Kooler Kart will move: Forward, Reverse, Port,
and Starboard
Object detected • Kooler Kart will avoid object while searching
for beacon signal
SubsystemsMotion Controls
Cost AnalysisParts Lists Number Cost Production
Cost/One
Microprocessor 1 $70 $50
HC-SR04 7 $21 $21
Servos 1 Donation $120
PCB 2 $25 $80
RF (Rx,Tx) 2 $20 $5
40KHz Receiver Circuit 2 $15 $15
Cart Frame 1 Donation $40
Total 16 $151 $331
TestingBeacon Detection
Beacon Signal Receivers
[4]
Max Variance: 5.83⁰Min Variance: 0.67⁰
Field of View: +/- 60⁰
Beacon Sensors
Distance: 2mDistance Expected
Avg % Error
100 cm 1.8%
200 cm 4.9%
300 cm 10%
TestingBeacon Detection
Beacon Sensors Object
ObjectCase – 50 cm
Distance % Error
1 14.8%
2 3.2%
3 5.4%
4 6.2%
5 4.9%
6 11.2 %
TestingObject Detection
SummaryFuture Team Advice
• I: Motivation• Pick a project that will keep your interest
• II: Time Management• Allow yourself time for errors
• III: Research• Always do your research before ordering parts
References[1] Eric. Infrared vs. Ultrasonic - What you should know. 2008.
Online: http://societyofrobots.com/member_tutorials/node/71
[2] “Arduino Mega,” in Arduino. 2013 Oct. 2. Available:http://arduino.cc/en/Main/ArduinoBoardMega
[3] “Ultrasonic Module HC-SR04,” in Hobby King. 2013 Oct. 2. Available: http://www.hobbyking.com/hobbyking/store/__31136__ultrasonic_module_hc_sr04_arduino.html
[4] Hashizume, H.; Kaneko, A.; Sugano, Y.; Yatani, K.; Sugimoto, M., "Fast and Accurate Positioning Technique Using Ultrasonic Phase Accordance Method," TENCON 2005 2005 IEEE Region 10 , vol., no., pp.1,6, 21-24 Nov. 2005 doi: 10.1109/TENCON.2005.301009
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