G - Physics – 01 – N
Patent
G - Physics
01
N
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
Bednarz John
Hoaglund John
Rosenberg Roger L.
Taylor Lula P.
Taylor Michael C.
Barrigar & Moss
Bednarz John
Hoaglund John
Rosenberg Roger L.
Taylor Lula P.
LandOfFree
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