Motion Training Aid with Body Capacitance Stimulator
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Solution Overview
Problem
Existing motion training aids fail to provide instantaneous and distinct feedback for quickly occurring, technically complex sports movements, such as those in athletic field events or gymnastics, which are crucial for correcting undesirable motions in real-time.
Innovation Solution
A stimulator device with a body capacitance charging and discharge module, utilizing electric shock feedback delivered through body electrodes, providing a stimulus within very short delays (less than 10 ms) to correct deviations from a predetermined motion track.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional feedback devices (visual displays, audible feedback) are used, then feedback can be provided to the user, but the feedback delay is too long to correct quickly occurring sports movements
Solution Approach 1:
The patent replaces traditional visual and audible feedback systems with an electrical stimulation system. Instead of using displays or speakers that require processing and perception time, the system uses electrical stimulators that can deliver immediate tactile feedback through the user's body, substituting mechanical/sensory systems with an electrical nervous system interface that operates at neural speeds.
Solution Approach 2:
The patent introduces electrical stimulation as an intermediary between the feedback signal and the user's perception. The stimulator acts as a mediator that converts digital feedback signals into immediate tactile sensations through skin electrodes, creating a direct neural pathway that eliminates the delay inherent in visual or auditory processing channels.
2Measurement precision
If feedback is provided for complex sports movements, then motion correction is possible, but the feedback must be instantaneous to be effective for quickly occurring movements
Solution Approach 1:
The system performs preliminary action by continuously monitoring motion parameters and pre-processing the data to detect deviations from the desired motion pattern before they become significant errors. The stimulator is pre-charged and ready to deliver feedback immediately when a deviation is detected, eliminating processing delays during the actual feedback moment.
Solution Approach 2:
The patent implements a closed-loop feedback system where motion sensors continuously track the user's position and compare it to the desired trajectory. When a deviation exceeds a threshold, the system immediately triggers electrical stimulation through skin electrodes, creating a real-time feedback loop that operates at the speed of neural response rather than sensory processing.
3Loss of information
If graphical displays or audible feedback are used, then feedback can be provided, but the feedback is not distinct enough to clearly indicate undesirable motion
Solution Approach 1:
The patent uses variations in electrical stimulation intensity, frequency, and pattern as analogous to color changes in visual systems. Different stimulation parameters encode different types of feedback information - for example, different pulse frequencies or intensities can indicate different types or severities of motion errors, providing rich information transmission through a single sensory channel without requiring complex displays.
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 device ensures immediate and noticeable feedback, discouraging undesirable motions by providing a rapid and distinct electric shock when there is a discrepancy between the current and desired motion, enhancing the effectiveness of motion training by ensuring instantaneous correction.
Implementation Method 1
a body capacitance charging module for charging a body capacitance of the user to a level that is sufficient to cause an electric shock to the user
Implementation Method 2
a discharge module for delivering an electric discharge through skin electrodes of the user when there is a disagreement between the position values of the current motion and of the predetermined desired motion
Data Source
AI summary
A training aid stimulator for providing fast perceptive feedback is provided. The training aid stimulator includes a first skin electrode for making electrical contact to the body of a user and a second skin electrode for making electrical contact to the body of a user. A body capacitance charging module is connected to the first skin electrode and a discharge module is connected to the second skin electrode for a feedback discharging of a body capacitance. A processor is connected to the body capacitance charging module for controlling the charging of a body capacitance to a predetermined first voltage level, wherein the processor is connected to the discharge module for controlling a feedback discharge of the body capacitance. The stimulator further comprises a measurement module for measuring the level of charge of the body capacitance.