Long jump and triple jump foul detector system

G - Physics – 01 – N

Patent

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Details

G01N 21/84 (2006.01) A63B 5/00 (2006.01) A63B 71/00 (2006.01) A63B 71/06 (2006.01)

Patent

CA 2056898

ABSTRACT A long or triple jump foul detector system is disclosed which very accurately detects a foul by an athlete when a portion of an athlete's shoe crosses over a foul line when beginning the jump. A laser beam is emitted parallel to and directly above the foul line. A laser beam detector detects interruption of the laser beam by the athlete's shoe and a foul detector provides a foul indication. An audible foul indication is delayed so as not to interfere with the athlete's jump. Also, the system may provide additional detection of an athlete's foot crossing a training line positioned in front of the foul line. Furthermore, the system distinguishes between a relatively quick interruption of the beam caused by the athlete's shoe when jumping, and a relatively slow interruption of the beam which may result such as by a judge placing his or her hand in the beam when measuring a jump. The system is equally well adaptable to either indoor or outdoor long or triple jump competition, and includes convenient set-up procedures which ensure accuracy. The system also automatically compensates for varying light conditions and is effective in bright sunlight. When a low battery voltage condition arises, the system automatically alerts the operator. A micro-processor is employed for rapid and accurate control of the various functions performed by the system. 32

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