Measuring device for detecting a striking motion of a racket, a training device and method for training a striking motion

摘要

The invention relates to a measuring device (2) for detecting a movement of a racket. The measuring device (2) comprises at least one two-dimensional acceleration sensor (6a, 6b) for detecting a two-dimensional acceleration vector ($a\; \to$_xy). In addition, the measurement device includes at least a uni-directional acceleration sensor (8a, 8b) for detecting a one-dimensional acceleration vector ($a\; \to$_z), wherein the at least a one-dimensional acceleration sensor (8a, 8b) in such a manner as to the at least one two-dimensional acceleration sensor (6a, 6b) is arranged, that the detected one-dimensional vector ($a\; \to$_z) in the substantially orthogonal to the by means of said at least one two-dimensional acceleration sensor (6a, 6b) acquired two-dimensional vector ($a\; \to$_xy) runs. In addition, the measuring device (2) has a first angle of rotation sensor (10) for detecting a first rotational angle (θ) of the two-dimensional acceleration vector ($a\; \to$_xy) in order to achieve a z axis, wherein the first rotary angle sensor (10) in such a way to the at least one two-dimensional acceleration sensor (6a, 6b) is arranged, that the z-axis in the substantially orthogonal to the two-dimensional vector ($a\; \to$_xy) extends. The measuring device (2) is distinguished by a second angle of rotation sensor (12) for detecting a second angle of rotation (φ) of the one-dimensional acceleration vector ($a\; \to$_z) in order from a y axis, wherein the second rotary angle sensor (12), in such a way to the at least a uni-directional acceleration sensor (8a, 8b) is arranged, that the y axis substantially perpendicular to the one-dimensional vector ($a\; \to$_z) extends.