Just saw the hawk eye tests at St Marys on Sky Sports. Looks like a good bit of kit, cameras and sensors and all that set up and then when the ball crosses the line the ref has a special watch that will receive the GOAL message. No message = no goal !! This should solve a few goal line issues I think
Can't believe it hasn't been tried before. Think it's great we are trialling this at St Mary's . Hope the technology does a good job and is an asset to the game and decisions made
Correct. Goal Ref they are called. A Danish/German company I think. Works with the chip in the ball and sensors in the frame of the goal and on the inside of the goal.
Surely the chip inside ball idea would be way more expensive? I know the cameras for Hawk-eye won't be cheap, but still, sensors of that kind would cost a fair bit.
To be honest I don't think the Hawk-Eye folks will be learning anything they didn't already know at St Mary's, it's just a bit of jumping through hoops for FIFA. The big question for both is "do they work 100% of the time", I don't know the answer but there are a lot of tricky challenges with both technologies that are not easy to get around. Can I see goal line technology being ready for the 2012-13 season? In a word...no.
Multi ball systems and in a few cases even in the ground the size of st Mary's players able to hoof the ball on to the stadium roof(think that was west ham) must mean the in ball technology will be expensive and can the technology survive being booted about. Glad football is finally joining the 21st century
Just much more simple, few sensors in the goal and a computer chip in the ball. Hawk eye has cameras, sensors etc etc.
More than a few mate! I think I read someone it would use 24 goal-line sensors. 12 in the frame and 12 bedded around the line and back of net to detect from different angles. Plus then also chips inside any balls prepared for match-day. You only need one ball somehow, and I don't know how, to slip through the checks and for example, you end up with a ball-boy chucking on a ball (as multi-ball is allowed in PL) without a chip in it to throw the whole method into disrepute. Of course the PL could just ban the multi-ball technique and just have the checked and verified balls kept over with the 4th officials. I'll say HawkEye purely because it is already used by other sports, oh and it's English. Would be nice for the English to get something from FIFA for a change...
Not sure that is how it would work! Potentially, but another method I saw was this: I would've thought if we were going to use cameras and methods such as HawkEye it would be very similar to this: [video=youtube;bBI1Eu_efQw]http://www.youtube.com/watch?v=bBI1Eu_efQw[/video] This is a demonstration of the GoalRef technology using a chip in hand-ball, the proposals are no different for football: (Don't worry it does have an English voice-over) [video=youtube;fqfC-L2yLD8]http://www.youtube.com/watch?v=fqfC-L2yLD8[/video]
Here is the GoalRef method being put into practice by the inventors, and being shown to some Referees in Tokyo: [video=youtube;yhEnLxaGYcU]http://www.youtube.com/watch?v=yhEnLxaGYcU&feature=relmfu[/video]
It's not a chip in the centre of the ball. That couldn't be done. You can't keep a chip in the absolute centre of the ball, what with the sudden accelerations, decelerations, and impacts that the ball undergoes. The German developed GoalRef system utilises several sensor chips inside the surface of the ball, and in the woodwork, as you have pointed out. It is said to be a faster system, being able to send back an absolute Yes or No inside the time that HawkEye manages. It is said to be very reliable in measurement and is quite a bit cheaper to implement than HawkEye. It also does not rely on line of sight as HawkEye does. However, HawkEye is well proven in other sports. It is predictable, usable, and almost 100% hardware reliable. The system is said to be something like 99.8% reliable in measurement. GoalRef is said to be a tad higher, but is almost entirely unproven and there is no real game data to suggest that the sensor chips in the ball are reliable under duress. There is also the issue that the chip sensors could possibly affect the flight of the ball, and that is an absolute no-no. My gut feeling is that the sensors won't quite be reliable enough at the moment, as the ball deforms and springs back, along with the other accelerations and impacts. Another gut feeling I've had is that FIFA have been stalling on implementing goal line technology for this length of time in order to give GoalRef enough development time to get in the frame, NOT for any principled opposition to it. With my cynical head on, having two competing systems means that costs will be lowered and there can be the odd brown envelope lurking should it become necessary to sweeten the odd decision. I'm not suggesting either of the companies would offer, but FIFA officials might hint.
Finally had a look to see if today's testing got onto the Beeb's website. Actually took some finding, but it was one of the most popular videos: http://www.bbc.co.uk/sport/0/football/18030338
