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    • 16. 发明授权
    • Velocity measuring ball
    • 速度测量球
    • US07779686B1
    • 2010-08-24
    • US11639196
    • 2006-12-15
    • Jacob Rothman
    • Jacob Rothman
    • G01P1/07A63B65/00
    • G01P3/64A63B43/00A63B2220/30A63B2220/62A63B2220/805A63B2220/833
    • A device for calculating the speed of movement of a ball utilizing a sensing unit having an aperture at the surface of the ball and a receiving unit within the ball that measures reflected signals generated by the sensing unit. A distance measuring feature fixes a value for a particular distance of flight of the ball and a transducer receives a signal indicating the termination of the flight of the ball. A processor calculates the speed of the ball utilizing the absence of a reflected signal through the aperture and the beginning of a stop signal generated by the transducer as the basis for the time span of flight of the ball.
    • 一种用于使用在球表面具有孔径的感测单元和球内的接收单元来计算球的运动速度的装置,其测量由感测单元产生的反射信号。 距离测量功能固定了球的特定飞行距离的值,并且换能器接收到指示球的飞行终止的信号。 处理器使用通过孔径的反射信号的不存在以及由换能器产生的停止信号的开始来计算球的速度,作为球的飞行时间跨度的基础。