Balance Training System with Segmented Load Sensors
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Solution Overview
Problem
Existing balance training systems face challenges in maintaining user motivation and safety due to unpredictable movements caused by inaccurate load center of gravity calculations, particularly when the user lifts their toes or heels, leading to sudden variations in carriage movement.
Innovation Solution
A balance training system with a moving carriage equipped with load sensors on a divided boarding plate, allowing for accurate detection and calculation of the load center of gravity, and a control unit that adjusts the carriage's movement based on this data to prevent sudden speed changes and ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the moving carriage is controlled according to load's center of gravity displacement, then the training effectiveness is improved, but sudden movement variations occur when the user lifts their feet
Solution Approach 1:
The boarding plate is divided into multiple detection zones with individual load sensors, allowing the system to detect which specific foot (toe or heel) is being lifted. This segmentation enables more precise control responses based on the specific balance disruption detected, rather than reacting to all center of gravity changes uniformly.
Solution Approach 2:
The control unit continuously monitors load sensor data and adjusts carriage movement in real-time based on detected balance changes. When toe or heel lifting is detected, the system provides feedback control to modify carriage acceleration, preventing sudden movements while maintaining training effectiveness.
2Adaptability or versatility
If a moving carriage is provided to enhance training motivation, then user motivation is improved, but accurate load center of gravity calculation becomes difficult
Solution Approach 1:
The boarding plate is divided into multiple detection zones (front plate, rear plate, left side, right side) with dedicated load sensors for each zone. This segmentation allows the system to accurately calculate load center of gravity by combining data from multiple distributed sensors, achieving precise measurement even during dynamic training movements.
Solution Approach 2:
Load sensors are positioned between the boarding plate and the moving carriage structure, serving as intermediaries that accurately measure the distribution of user weight on the boarding plate. This intermediary placement enables precise detection of center of gravity position without interfering with the carriage's movement or the user's training actions.
3Productivity
If the entire balance training apparatus moves to enhance rehabilitation effectiveness, then training effectiveness is improved, but safety control becomes more complex
Solution Approach 1:
The boarding plate is divided into multiple detection zones with individual load sensors, allowing the control unit to identify specific balance disruptions (toe lift vs. heel lift). This segmentation enables simplified safety control logic that responds differently to specific conditions rather than requiring complex analysis of all possible balance states.
Solution Approach 2:
The control unit continuously receives feedback from load sensors and automatically adjusts carriage movement to maintain safety. This closed-loop feedback control simplifies safety management by automating the response to balance disruptions, reducing the complexity of manual safety monitoring while enhancing rehabilitation effectiveness.
Data Source
AI summary
A balance training system includes a moving carriage that moves on a moving surface, and a detection unit that detects a load received from training person's feet, and drives a driving unit based on the load's center of gravity of the feet to control movement of the moving carriage. A boarding plate is divided into a front plate on which a toe side of the feet is placed and a rear plate on which a heel side of the feet is placed. The detection unit includes right and left front load sensors, respectively provided with tilts to right and left foot sides, on a rear surface side opposite to the boarding surface of the front plate, and right and left rear load sensors, respectively provided with tilts to the right and left foot sides, on a rear surface side opposite to the boarding surface of the rear plate.