Transcript Goal Line Technology

Logan Mudlo
Road Map
 What is goal line technology?
 Why is it needed?
 Famous occurrences of missed calls
 Four different types of goal line technology
 Wrap-up/Conclusion
What is goal line technology?
 A method used to determine when the ball has
completely crossed the goal line with the assistance of
electronic devices and at the same time assisting the
referee in calling a goal or not.
Why is it needed?
 Disallowed goals have negatively impacted big games
 It would make referee’s calls easier
 It would eliminate controversial goals
Famous Occurrences
 2000 African Cup of Nations
 Manchester United vs Tottenham in 2005
 2009 Crystal Palace vs Bristol City
 2010 World Cup: England vs Germany
 2011 FA Cup: Chelsea vs Tottenham
Goal Line Technologies
Goal Minder
 Founded by Harry Barnes and Dave Parden
 Uses cameras that are mounted on the goal posts
 Only gave visual evidence
 Cheapest of the four goal line techs
GoalMinder: Pros and Cons
 Pros:
 Very inexpensive
 No digging up of the pitch
 Cons:
 Only works with visible balls
 Takes up to 5 seconds
Cairos GLT System
 Cairos Technologies
 Uses four major components
 Magnetic Field
 Sensors
 Receivers
 Referee
Cairos: Pros and Cons
 Pros:
 Returns signal in 1/10 of a second
 Ball doesn’t have to be visible
 99.9% correct
 Cons:
 Only compatible with Adidas balls
GoalRef
 Founded by Peter Mikelson
 Very similar to the Cairos System
 Uses same magnetic field sensors
 Coils are added to goal frame
 Creates a “light curtain” within the net
 Sensors are placed between inner ball and leather
GoalRef: Pros and Cons
 Pros:
 Instant verification to referee
 Ball can be hidden
 Can be used with any ball
 Cons:
 Not great for TV
Hawk-Eye
 First developed in 1999 by Paul Hawkins
 Already in use during tennis and cricket matches
 Uses six high speed cameras to triangulate the ball
 Produces a graphical image of the flight path
Hawk-Eye: Pros and Cons
 Pros:
 Graphical image for TV
 Cons:
 Ball has to be 25% visible
 High installation costs
Conclusion
 Goal line tech will drastically help officials
 Eliminate missed calls that affect the game
 Use magnetic fields and cameras
 GoalRef and Hawk-Eye are the two best candidates
References
 "Football." Hawk-Eye. N.p., n.d. Web. 25 Mar. 2013.
 "GLT System." Cairos Technologies. N.p., n.d. Web. 25 Mar. 2013.
 "Goal-line Technology." Wikipedia. Wikimedia Foundation, 24 Mar.
2013. Web. 24 Mar. 2013.
 "Goalminder Technology." Goalminder. N.p., n.d. Web. 25 Mar. 2013.
 "Hawk-Eye v GoalRef: The Pros and Cons of the Over-the-line Systems
FIFA Are Testing." By Martin Lipton. N.p., n.d. Web. 25 Mar. 2013.