Motion Analysis Device for Golf Swing Plane Calculation
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Solution Overview
Problem
Existing motion analysis techniques for golf swings, such as those described in JP-A-2009-20897 and JP-A-2008-23036, are time-consuming and inaccurate in presenting the shaft plane and Hogan plane, requiring manual editing of image data and are not easily accessible to golfers for improving their swing form.
Innovation Solution
A motion analysis method and device using inertial sensors to calculate and display imaginary planes representing the shaft plane and Hogan plane, allowing golfers to visualize their swing trajectory and identify areas for improvement by comparing actual and ideal swing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual editing of image data is used to find specific points and analyze swing plane, then the swing plane can be specified, but it is time-consuming and generates large discrepancy from the actual swing plane
Solution Approach 1:
The patent replaces manual mechanical editing of image data with an automated image processing system that uses computer vision algorithms to detect the golf club and golfer's body, automatically calculate the swing plane, and display results in real-time without manual intervention
Solution Approach 2:
The system enables automatic self-analysis by capturing images, processing them through algorithms that identify the golf club trajectory and golfer posture, and generating swing plane analysis without requiring external manual editing or intervention
2Measurement precision
If manual drawing of lines with ruler is used based on shot image to find Hogan plane, then the Hogan plane can be specified, but it requires complex manual work and is not easily accessible to golfers
Solution Approach 1:
The patent replaces manual drawing operations with automated image processing that uses computer vision to detect the golfer's body position and automatically calculate the Hogan plane through algorithmic analysis of the captured images
Solution Approach 2:
The system performs automatic detection and calculation of the Hogan plane without requiring golfer intervention, making the complex analysis accessible to regular golfers through simple image capture and automated processing
3Ease of operation
If shaft plane and Hogan plane are shown as indicators on image, then golfers can easily grasp points of improvement, but previous techniques lack measures to present these planes easily and accurately
Solution Approach 1:
The patent replaces manual plane construction with automated image processing that accurately calculates the shaft plane and Hogan plane by detecting the golf club orientation and golfer body position, then displays these planes as visual indicators overlaid on the captured images
Solution Approach 2:
The system uses color-coded visual indicators to represent different planes (shaft plane and Hogan plane) overlaid on the image, making it easy for golfers to distinguish and understand the spatial relationships and swing form improvements
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
Provides a clear and efficient means for golfers to analyze their swing, enabling them to grasp the causes of good or bad ball hitting and make targeted improvements through visual feedback of the swing trajectory in three-dimensional space.
Implementation Method 1
The inertial sensor outputs a detection signal according to the posture of the sporting gear
Data Source
AI summary
A motion analysis device includes a calculation unit which specifies a first imaginary plane, that is, a shaft plane formed by a first line segment representing a direction in which a shaft part of a sporting gear in a static posture extends and a second line segment representing a ball hitting direction, with the use of an output from an inertial sensor.