Batting Posture Feedback via Motion and Force Sensors
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Solution Overview
Problem
Conventional techniques for measuring bat and ball movement during batting practice with a tee do not provide feedback on how to adjust the hitting posture of the batter.
Innovation Solution
An information processing device that continuously measures the batter's posture using motion and force sensors, determines the timing of the ball hit, and outputs messages instructing the batter to change their posture based on physical characteristics and measured postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measurement techniques (bat speed radar, ball speed radar) are used, then movement information of bat and ball can be measured, but the batter cannot acknowledge how to change hitting posture
Solution Approach 1:
The system continuously measures the batter's posture using motion sensors and force plates, compares the measured posture with an ideal posture, and provides real-time feedback through a display device showing the difference between actual and ideal postures. This enables the batter to acknowledge and adjust their hitting posture during practice.
Solution Approach 2:
The system introduces an intermediary information processing device that acts as a mediator between the measurement sensors and the batter. This device processes the raw measurement data, compares it with ideal posture data, and presents the difference information to the batter in a comprehensible format, enabling posture adjustment feedback.
2Measurement precision
If multiple sensors (motion sensor, force plate) are added to measure posture, then posture measurement capability is improved, but device complexity increases
Solution Approach 1:
The information processing device serves multiple functions: it controls the display device, processes measurement data from motion sensors and force plates, compares measured posture with ideal posture, and provides feedback. By consolidating these functions into a single multi-functional device, the system reduces overall complexity despite using multiple sensors.
Data Source
AI summary
Provided is a technique with which a batter who is practicing batting with a tee can acknowledge how the batter should change his/her hitting posture. An information processing device includes a processor that executes: (a) continuously measuring, according to either or both of output signals from a motion sensor and a force plate, a posture of a batter who is practicing batting with a tee; (b) determining, according to an output signal from a force sensor internally stored in the tee, a timing at which the batter hits a ball placed at the tee; (c) determining, as a hitting posture of the batter, a posture of the batter at the determined timing; and (d) outputting a message instructing the batter to change the batter's hitting posture, according to information indicating an exemplary hitting posture and information indicating the determined batter's hitting posture.