Motion analysis system
    1.
    发明授权

    公开(公告)号:US06513381B2

    公开(公告)日:2003-02-04

    申请号:US09916744

    申请日:2001-07-26

    IPC分类号: G01P1508

    摘要: A device comprised of at least a pair of accelerometers and a tilt sensor mounted in fixed relation to a datum plane defining surface (sole of a shoe) may be used for extracting kinematic variables including linear and rotational acceleration, velocity and position. These variables may be resolved into a selected direction thereby permitting both relative and absolute kinematic quantities to be determined. The acceleration is determined using a small cluster of two mutually perpendicular accelerometers mounted on a shoe. Angular orientation of the foot may be determined by double integration of the foot's angular acceleration (which requires a third accelerometer substantially parallel to one of the two orthogonal accelerometers). The two orthogonal accelerations are then resolved into a net horizontal acceleration or other selected direction which may be integrated to find the foot velocity in the selected direction. The average of the foot velocity corresponds to the subject's gait speed.

    Motion analysis system
    2.
    发明授权
    Motion analysis system 有权
    运动分析系统

    公开(公告)号:US06301964B1

    公开(公告)日:2001-10-16

    申请号:US09347305

    申请日:1999-07-06

    IPC分类号: G01P1508

    摘要: A device comprised of at least a pair of accelerometers and a tilt sensor mounted in fixed relation to a datum plane defining surface (sole of a shoe) may be used for extracting kinematic variables including linear and rotational acceleration, velocity and position. These variables may be resolved into a selected direction thereby permitting both relative and absolute kinematic quantities to be determined. The acceleration is determined using a small cluster of two mutually perpendicular accelerometers mounted on a shoe. Angular orientation of the foot may be determined by double integration of the foot's angular acceleration (which requires a third accelerometer substantially parallel to one of the two orthogonal accelerometers). The two orthogonal accelerations are then resolved into a net horizontal acceleration or other selected direction which may be integrated to find the foot velocity in the selected direction. The average of the foot velocity corresponds to the subject's gait speed.

    摘要翻译: 包括至少一对加速度计和倾斜传感器的装置可以用于提取包括线性和旋转加速度,速度和位置的运动学变量的固定关系到基准平面限定表面(鞋底)。 这些变量可以被分解成选定的方向,从而允许确定相对和绝对运动量。 使用安装在鞋上的两个相互垂直的加速度计的小群确定加速度。 脚的角度定向可以通过脚的角加速度(其需要基本上平行于两个正交加速度计之一的第三加速度计)的双重积分来确定。 然后将两个正交加速度解析为净水平加速度或其他选定的方向,其可以被积分以在所选方向上找到脚速度。 脚部速度的平均值对应于受试者的步态速度。