Tennis Stroke Heaviness Assessment System
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Solution Overview
Problem
The concept of 'heaviness' in tennis ground strokes, which combines pace and top spin, lacks a quantifiable and measurable definition, making it difficult to analyze and improve player performance effectively.
Innovation Solution
A system and method that assesses the 'heaviness' of a ground stroke by measuring linear and rotational speed of a tennis ball using sensors, processing the data to generate a heaviness value, which can be displayed in real-time and stored for comparison, applicable to various racquet sports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional markers of miles per hour and rotations per minute are used to assess tennis strokes, then measurement simplicity is maintained, but measurement precision and comprehensiveness of heaviness assessment deteriorates
Solution Approach 1:
The patent combines multiple measurement functions (linear speed measurement via radar, rotational speed measurement via sensors, and heaviness calculation) into an integrated assessment system. The sensor device merges detection of both translational and rotational motion parameters to provide a comprehensive heaviness metric that captures the combined effect of pace and top spin.
Solution Approach 2:
The assessment system is designed to provide multiple functions: measuring linear speed, measuring rotational speed, calculating heaviness values, and providing real-time feedback. This multi-functional approach allows a single system to replace multiple separate measurement tools while providing more comprehensive assessment capability.
2Productivity
If real-time heaviness assessment is implemented, then player training effectiveness is improved, but data processing complexity and time requirements increase
Solution Approach 1:
The system pre-calculates and stores heaviness formulas and weighting coefficients before actual measurement. The processor is pre-configured with the mathematical relationships between linear speed, rotational speed, and heaviness, allowing immediate calculation and feedback during play without requiring complex real-time analysis.
Solution Approach 2:
The system provides immediate real-time feedback of heaviness values to players during training sessions. This feedback mechanism allows players to instantly adjust their technique based on measured heaviness, creating a closed-loop training system that continuously improves performance through immediate correction and refinement.
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 cohesive, real-time assessment of 'heaviness' allowing for improved player analysis and training, enabling more effective inter- and intra-player comparisons, and offering a paradigm shift in understanding and experiencing the game of tennis.
Implementation Method 1
The one or more sensors may comprise a camera, a radar system, a lidar system or an audio sensor
Implementation Method 2
The one or more sensors may comprise a camera, a radar system, a lidar system or an audio sensor
Implementation Method 3
when the one or more sensors comprise a camera, measuring a distance that the ball has moved in a plurality of subsequent frames captured by the camera
Data Source
AI summary
A method and system for assessing heaviness of a swing in sport of tennis is disclosed. The system may display the calculated heaviness of a groundstroke in real-time. As the player hits ground strokes, the system will measure linear and rotational speed of the ball and calculate a heaviness value based on the physics of translational and rotational kinetic energy of the ball.