Intelligent Belt for Real-Time 3D Motion Feedback
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Solution Overview
Problem
Current training aids for physical activities primarily focus on two-dimensional movements and provide post-instructional feedback, failing to offer real-time correction for three-dimensional motions and body positioning during activities like snowboarding or ballet.
Innovation Solution
A wearable intelligent belt equipped with a positional sensor, feedback mechanisms, and a communication link to a secondary sensor, allowing for real-time analysis and correction of hip position and orientation in three-dimensional space, providing immediate feedback through visual, haptic, and auditory cues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video recording and post-instructional analysis are used, then detailed performance review is possible, but real-time correction during activity is not provided
Solution Approach 1:
The system pre-records ideal performance data and establishes performance parameters before the actual activity. This preliminary preparation enables real-time comparison and feedback during the activity, resolving the contradiction between detailed analysis and timely feedback.
Solution Approach 2:
The system implements continuous real-time feedback by comparing actual performance against pre-recorded ideal performance during the activity. This immediate feedback loop eliminates the time delay inherent in post-instructional analysis while maintaining measurement precision.
2Device complexity
If two-dimensional movement analysis is used, then simple measurement is possible, but three-dimensional motion and body positioning cannot be analyzed
Solution Approach 1:
The system transitions from two-dimensional video analysis to three-dimensional motion analysis by incorporating sensors that measure position, orientation, and movement in three-dimensional space. This dimensional expansion enables comprehensive analysis of body positioning and motion trajectories while maintaining manageable system complexity through standardized sensor integration.
3Measurement precision
If special clothing or reflectors are placed on body, then video tracking accuracy is improved, but comfort and ease of operation deteriorate
Solution Approach 1:
The system replaces the mechanical/video-based tracking system with electronic sensors that directly measure position and orientation. This substitution eliminates the need for special clothing or external reflectors, improving wearer comfort while maintaining or enhancing measurement precision through direct physiological sensing.
Data Source
AI summary
This document presents a system and method for using an intelligent belt and a remote secondary sensor to obtain instantaneous feedback during the performance of physical activities. A remote secondary sensor may be attached to a conveyance associated with, and in use by, a user. The intelligent belt uses a position sensor, such as a 3-axis accelerometer, to monitor the movements of a user and a conveyance such as an athletic apparatus, or any other apparatus upon which a user may stand, move, or with which the user may be associated. The belt is capable of determining when certain physical activities are not being performed properly in comparison to a preferred and pre-configured performance, and can provide real-time feedback using visual, aural, haptic, and other feedback mechanisms.