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Visualization of pedaling technique using cleat-size biaxial load cells

机译：使用纤维尺寸双轴称重率的踩踏技术的可视化

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摘要

A visualization system for cycling pedaling technique is investigated in this paper. This system consists of the visualization of pedaling effectiveness and pedaling force vectors. Pedaling effectiveness is defined as the ratio of the tangential to total force applied to the pedals. New biaxial load cells were also developed to attach to the bottom of cycling shoes in place of plastic cleats. These load cells can be connected to the bicycle pedals to measure the magnitude and direction of pedaling forces of both pedals, respectively. The size of load cells is comparable with detachable plastic cleats (Shimano Corp). Therefore, cyclists were permitted to use their own bicycles for performance tests. For visualization of pedaling effectiveness, each force measured by the load cell was converted to coordinates respective to the tangential and radial directions of each crank. The crank angle was calculated from the signal of a magnetic transducer. The pedal angle was calculated using a link mechanism with the lower limbs: the length of the lower limbs, the length of the crank and the position of the greater trochanter were used as constant parameters for computational calculations. For visualization, the relationship between crank angle and force vectors was plotted on a computer, just after the performance tests. This information would be provided for coaches and cyclists in order to identify improvement points for pedaling technique.
机译：骑自行车蹬踏技术的一个可视化系统在本文中进行了研究。该系统由蹬踏有效性和踏力矢量的可视化。蹬踏有效性被定义为切向的施加到踏板的总的力的比率。新的双向负载细胞也发展到重视到位的塑料夹板的自行车鞋的底部。这些负载单元可被连接到自行车踏板以测量两个踏板的蹬踏力的大小和方向，分别。负载单元的尺寸是用可拆卸的塑料夹板（岛野公司）相媲美。因此，骑自行车的人被允许用自己的自行车性能测试。蹬踏有效性的可视化，通过测力传感器测得的各力被转化为相应于每个曲柄的切线方向和径向方向的坐标。曲柄角由磁换能器的信号来计算。下肢的长度，曲柄的长度和被用作计算机计算常数参数转子越大的位置：所述踏板角使用与所述下肢的连杆机构来计算。对于可视化，曲柄角度和力矢量之间的关系作图的计算机上，只是后的性能测试。会以确定改进点蹬踏技术来提供教练和骑自行车的人这一信息。

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