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Method and device for obtaining impact point spatio-temporal information

A technology of impact point and time and space, which is applied in the direction of measuring device, string-through racket, speed/acceleration/impact measurement, etc., can solve the problem of lack of means to accurately determine the moment of hitting point, so as to improve hitting skills and increase Hardware cost, effect of improving hitting skills

Inactive Publication Date: 2017-05-17
悦物电子科技(上海)有限公司
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Problems solved by technology

[0005] In view of the above situation, the present invention improves the sensor-based identification technology and provides a method and device for obtaining the spatio-temporal information of the impact point to identify the spatial position and occurrence time of the impact point, solving the problem that the existing sensor-based identification technology can only The technical problem of knowing the spatial trajectory of the racket and lacking the means to accurately determine the moment of hitting the ball

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  • Method and device for obtaining impact point spatio-temporal information

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Embodiment Construction

[0032] In order to facilitate the understanding of the present invention, the following will be described in conjunction with the accompanying drawings and embodiments.

[0033] The invention provides a method for obtaining the space-time information of the impact point, which is obtained based on sensor technology; when the racket hits the ball, the instantaneous impact force will have a short-term sudden impact on the acceleration and angular acceleration of the racket. Although different racket sports activities are slightly different, the same point is that the direction of the impact force is inconsistent with the direction of the force exerted by the human body on the racket, or even basically completely opposite (such as hitting the ball head-on with a forehand). When hitting the ball (not hitting the ball), there is a rapid change in sensor acceleration and angular acceleration in one or more dimensions for a short period of time. The present invention judges whether a...

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Abstract

The invention provides a method and device for obtaining impact point spatio-temporal information. A low-cost and low-consumption sensor technology is utilized and combines an existing algorithm to obtain a space trajectory of racket actions, then an impact point moment and a corresponding space position are judged by calculating acceleration and angular acceleration change degree in a short time window, the hardware cost is not increased. The method is simple to achieve, and the technical problem that the space trajectory of a racket can be obtained by adopting a sensor-based identification technology and no means is provided to accurately determine a ball hitting point is surely solved.

Description

technical field [0001] The present invention relates to the field of Internet of Things and sports technology, in particular to a mechanism and device for identifying spatio-temporal information of impact points in racket sports. Background technique [0002] In the racket type sports activities, there are generally impacts between rackets and balls, such as impacts between table tennis rackets and table tennis balls, impacts between badminton rackets and shuttlecocks, impacts between tennis rackets and tennis balls, and the like. With the continuous expansion of peripheral equipment in these sports activities, it is more and more important to analyze the spatial position and occurrence time of the impact point of the racket and the ball in the racket trajectory. For example, professional players and amateurs hope to obtain this information to analyze the hitting Actions, so as to improve and improve hitting skills in a targeted manner. [0003] It is worth noting that ther...

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Application Information

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IPC IPC(8): A63B24/00A63B49/02A63B49/08G01P15/00
CPCA63B24/0087A63B24/0003A63B24/0021A63B49/02A63B49/08A63B2024/0043G01P15/00
Inventor 孟勤李珂张韫贇
Owner 悦物电子科技(上海)有限公司
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