Balance Training System Dynamic Reference Position Control
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Solution Overview
Problem
Existing balance training systems fail to accurately control the movement of a force plate in response to changes in the standing position of a subject during balance training, leading to a deviation between the actual and theoretical center of gravity positions, which hinders effective training.
Innovation Solution
A balance training system equipped with a riding plate, a load distribution sensor matrix, and a load sensor, where a control unit calculates and updates the reference position based on the detected foot positions and load, allowing for precise control of a mobile body to align with the changing center of gravity, even when the standing position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the reference center of gravity position is maintained at the first set position, then the device complexity is reduced, but the measurement precision of the center of gravity position deteriorates when the standing position changes
Solution Approach 1:
The load distribution sensor continuously detects the standing position of the subject's feet, and the control unit uses this feedback information to dynamically update the reference center of gravity position. This feedback mechanism ensures that the reference position accurately reflects the current standing position, maintaining measurement precision without requiring complex manual intervention.
Solution Approach 2:
The system automatically updates the reference center of gravity position based on detected changes in the subject's standing position. The control unit autonomously calculates the new reference position using the load distribution sensor data, eliminating the need for manual recalibration and reducing operational complexity while maintaining accuracy.
2Measurement precision
If the reference position is dynamically updated based on foot positions, then the measurement precision of center of gravity position is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical recalibration mechanisms with an electronic sensing and control system. The load distribution sensor and control unit automatically perform the function of reference position updating through electronic calculations, simplifying the overall system architecture while maintaining high measurement precision.
Solution Approach 2:
The control unit performs multiple functions: it processes data from the load sensor, analyzes foot position data from the load distribution sensor, calculates the center of gravity position, and updates the reference position dynamically. This multi-functionality reduces the need for separate dedicated components, thereby managing device complexity while achieving precise measurement.
3Device complexity
If only load detection is used, then the device complexity is reduced, but the adaptability to changing standing positions deteriorates
Solution Approach 1:
The sensor system is segmented into two functional components: a load sensor for detecting vertical force and a load distribution sensor for detecting horizontal foot position. This segmentation allows each sensor to specialize in its specific measurement function, improving adaptability to position changes while keeping individual sensor complexities low.
Solution Approach 2:
The patent combines the load sensor and load distribution sensor into an integrated sensing system that works together to provide comprehensive position detection. The control unit merges the data from both sensors to calculate the center of gravity position, achieving high adaptability to standing position changes through the synergistic combination of simple sensor components.
Data Source
AI summary
A balance training system including a riding plate; a load distribution sensor; a load sensor; a mobile body on which the riding plate, the load distribution sensor, and the load sensor are disposed; and a control unit configured to calculate a reference position based on positions of feet of a trainee detected by the load distribution sensor, then calculate a center of gravity position of the trainee based on the load detected by the load sensor, and control a movement of the mobile body based on a change of the center of gravity position with respect to the reference position. The control unit is configured to update the reference position based on the changed positions of the feet of the trainee when the change of the position of at least one of the feet of the trainee is detected by the load distribution sensor.