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Football Position Tracker by Kavin Arumugham and Arjun Majumdar

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Football Position Tracker by Kavin Arumugham and Arjun Majumdar Powered By Docstoc
					Football Position Tracker




            By
      Kavin Arumugham
            and
       Arjun Majumdar
          Introduction
A common problem and frustration echoed
by many football fans, is the delay and
inaccuracy involved with acquiring first
down measurements, goal line crossing,
and catch vs. trapping judgment calls. Our
project was designed to alleviate these
problems.
            Objective
Our goal was to produce a small chip to be
placed in a football. The chip would
communicate with a base station on the
sidelines of the football field. It would
transmit acceleration information. Ball
movements are extracted form this data
and displayed.
               Benefits
• Measure football position anywhere on the
  field, and follow its flight path
• Determine whether ball has crossed goal
  line for touchdown
• Determine whether offense has achieved a
  first down
• Verify whether pass was “caught” or
  “trapped”
• Allow measurement of throws and kicks
  (velocity and trajectory angles)
              Features
• Ability to Recall Past Ball Movements
  for the Duration of a Game

• Display as little or as much Data as
  the user desires
Review Original Design
Review Original Design
              Project Build
• The accelerometers were placed on a pcb
• The rest of the transmitter circuit was built on a
  Perfboard
             Project Build
• PIC encoded data
• Linx Transmitter/Receiver
                  Project Build
• Visual Basic 6 used to acquire data through serial communication
• Program created to display ball movement from calculations of this
  received data
        Functional Tests
• Accelerometers tested for 0g, 1g, -1g
  values

• Linx chips tested for transmission range
  and error rate

• All components well within desired
  temperature ranges
               Challenges
Major Challenges
• PIC’s are unable to collect more than two
  simultaneous pwm signals.
• Real time data with high sampling

Other Challenges
• Incorrect PCB boards
• Accelerometer analog inaccuracy
• Matlab serial port inadequacies
            SUCCESSES
• Encoded and transmitted accelerometer
  data
• Display of position movements as well as
  acceleration and velocity values (data was
  not calibrated)
• Microcontroller had minimal delays
  outputting real time data
• Small Power Consumption (transmitter
  ~.205 Watts)
             Other tests
• The accelerometers need to be calibrated
  to accurately plot the data with the Visual
  Basic program
• Weather-proofing needs to be developed
  and tested
• Shock test done
• Chip Balanced
        Recommendations
• Tilt recognition should be implemented
  with the use of one additional
  accelerometer
• Accelerometer accuracy improved
• User friendly software with additional
  display capabilities
• Rechargeable power supply
           THE FUTURE
• The project will be continued by Arjun

• Extensive field testing should be done to
  verify product performance

• With modification we believe there is a
  strong market for this product

				
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posted:5/6/2011
language:English
pages:16