Electronics Real Life Application #2 = Goal-Line Technology Part 2

Introduction

This article is a continuation of the previous article about goal-line technology. If you haven't read that one yet, it is recommended to read that one first to know more about goal-line technology. In this article, we will be talking more about how this technology works.

How it works

The purpose of goal-line technology is for the match officials to give their correct verdict about whether the ball has fully crossed the line or not. This can help to reduce controversies and ensure that a football match has many more correct decisions given.

The information of whether the ball has crossed the line is relayed in real-time where it is transmitted within a second. However, only the match officials receive the signal from the technology on their watches.

The system uses 14 high-speed cameras mounted on the catwalk of the stadium or under the roof. The data from the cameras are then used to create a 3D animation to viasualise the decision on television and on the giant screen to show whether it is a goal or not. This can help to further prove to the fans why the decision taken by the match officials on whether a goal is... a goal or not, to say.

Here are some clips showing goal-line technology in action. Also, remember that the ball must be fully across the line to be counted as a goal. If the ball is even 1mm on the line (this means the curve of the ball. The ball may not be landed on the line but has some of its curvature on the line), it is not considered a goal.

Testing and Approval

The International Football Association Board (IFAB) decided on 5th July 2012 about the potential use of goal-line technology to be implemented in football. They also decided about a certification procedure should control the quality of the technology's systems. All competition stadiums are tested by independent test institutes before the start of the tournament. The referee also checks the systems before the start of each match to see if the system is turned on and correctly calibrated to avoid false results from the system.

Here are some videos showing the testing and breaking down of goal-line technology (they can only be viewed on Youtube)

Testing goal-line technology:

Approval:

Breaking down goal-line technology

Goal-line technology systems

There are some systems implemented for goal-line technology such as GoalControl, Hawk-Eye and Goalminder. I will explain more about them in the next article

References