Swing Analyzing Apparatus Using Angular Velocity Sensors
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Solution Overview
Problem
Existing swing analyzing systems for sports, such as tennis and golf, are inefficient due to subjective judgment methods and require complex camera setups, making them costly and difficult to handle.
Innovation Solution
A swing analyzing apparatus using angular velocity sensors to detect impact timing and calculate angular velocity changes, allowing for precise judgment of impact state without the need for cameras, by selecting appropriate axes based on the sporting good.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera system is used to capture images of the sporting good, then the state of impact can be measured, but the system becomes large-scale and costly
Solution Approach 1:
The patent replaces the optical camera system with a mechanical sensing system using angular velocity sensors (gyro sensors) attached to the sporting good. This substitution captures rotational motion data directly from the sporting good during impact, achieving impact state measurement without requiring complex camera equipment, thus reducing system complexity and cost while maintaining measurement capability
Solution Approach 2:
The patent extracts only the essential measurement function from the camera system by using angular velocity sensors that directly measure rotational motion at the impact point. This extraction eliminates the need for image capture, processing, and analysis infrastructure, leaving only the core measurement capability implemented through simple sensor data collection
2Measurement precision
If a camera system is used to capture images, then impact state can be analyzed, but handling becomes difficult due to positioning requirements
Solution Approach 1:
The patent replaces the camera system with angular velocity sensors that are attached directly to the sporting good. This mechanical substitution eliminates the need for precise camera positioning and angle adjustment, as the sensors move with the sporting good and automatically capture rotational motion data from the correct reference frame, significantly improving ease of operation
Solution Approach 2:
The angular velocity sensors attached to the sporting good perform self-service measurement by automatically capturing rotational motion data during the swing and impact. The system requires no external positioning or adjustment by the operator, as the sensors inherently measure from the sporting good's own reference frame, making the system easy to handle
3Device complexity
If subjective judgment is used to determine impact quality, then no equipment is needed, but practice efficiency is reduced
Solution Approach 1:
The patent transforms the subjective judgment process into an objective parameter-based system by measuring angular velocity changes during impact. The system calculates specific parameters such as the amount of change in angular velocity and the greatest value of angular velocity, providing quantifiable feedback that enables efficient practice while keeping the device simple and equipment-free in terms of external infrastructure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus simplifies the configuration, enhances handling, and provides accurate, subjective judgment of impact state, enabling efficient swing practice by capturing rotational motion and attitude changes.
Implementation Method 1
an angular velocity sensor, an impact detection section that detects impact timing in a swing of a sporting good
Implementation Method 2
an angular velocity information calculation section that calculates at least one of the amount of change in angular velocity with respect to a predetermined axis in a predetermined period after the impact timing and the greatest value of the angular velocity
Data Source
AI summary
A swing analyzing apparatus includes at least an angular velocity sensor, an impact detection section, an angular velocity information calculation section, and an impact state judgment section. The impact detection section detects the timing of impact in a swing of a sporting good. The angular velocity information calculation section calculates at least one of the amount of change in angular velocity with respect to a predetermined axis in a predetermined period after the impact timing and the greatest value of the angular velocity based on data outputted form the angular velocity sensor. The impact state judgment section judges the state of impact based on the result calculated by the angular velocity information calculation section.