Posture Evaluation Device for Fatigue-Level Assessment
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Solution Overview
Problem
Conventional fatigue determination devices fail to appropriately evaluate posture from the perspective of fatigue level.
Innovation Solution
A posture evaluation device that includes a storage for reference postures and posture features, an obtainer to gather body part location information, a posture estimator to calculate posture features, and an evaluator to compare and evaluate the subject's posture against reference postures, along with a private booth to accommodate the subject.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fatigue determination devices use force measurement and bioelectrical impedance measurement, then fatigue level can be estimated, but posture evaluation from the perspective of fatigue level is not appropriate
Solution Approach 1:
The evaluation system is segmented into multiple independent measurement components: imaging device for posture capture, measurement device for physiological parameters, and separate analysis modules for posture features and fatigue assessment. This segmentation allows each component to specialize in its specific measurement task, improving both posture evaluation accuracy and fatigue assessment reliability independently.
Solution Approach 2:
The patent introduces posture features as an intermediary element that connects posture measurement with fatigue level assessment. By extracting specific posture features (angles, positions, orientations) as intermediate data, the system can evaluate posture accurately while also using these features as inputs for fatigue determination, thereby making the fatigue assessment more reliable and posture-appropriate.
2Adaptability or versatility
If multiple measurement methods are combined for comprehensive evaluation, then evaluation comprehensiveness is improved, but device complexity increases
Solution Approach 1:
The evaluation device is designed with multi-functionality to perform both posture evaluation and fatigue level determination using a unified system architecture. The imaging device and measurement device can capture multiple types of data, while the evaluation unit can process different feature types (posture features, physiological features) through the same evaluation framework, thereby achieving comprehensive evaluation without proportionally increasing device complexity.
Solution Approach 2:
The patent merges posture measurement and fatigue assessment into a single integrated evaluation process. By combining multiple measurement methods (imaging, bioelectrical impedance, force measurement) into one unified device that processes all data through a common evaluation unit, the system achieves comprehensive evaluation capabilities while avoiding the complexity of multiple separate measurement systems.
Data Source
AI summary
A posture evaluation device (evaluation device) includes: a storage in which reference postures, which are references used in evaluation of a posture, and posture features, which correspond to the reference postures, are stored in advance; an obtainer (first obtainer) that obtains information regarding locations of body parts of a subject; a posture estimator that calculates posture features of a posture of the subject, based on the information; and an evaluator that evaluates the posture of the subject by comparing the posture features of the posture of the subject that have been calculated and the posture features corresponding to the reference postures that are stored, and outputs an evaluation result of evaluating the posture.