| 摘要 |
An intelligent ball system for use in a football match comprising a ball B with a microphone, a microchip and a battery, at least 2 detectors D fixed with respect to a pitch to detect signals from the ball B, a computer H to receive signals from the detectors, means to communicate K with a match official and a camera system C controlled by the computer H which follows the path of the ball B. The ball B may have a rechargeable battery which can be charged without being removed from the ball B. The areas of the pitch may be assigned XYZ coordinates with the centre of the Euclidean geometry system being based on the centre mark of the pitch. The arrangement may be used to identify if a ball B has crossed a line or a goal scored and may be used to analyse the match. |
