Posture Stability Detection via Pressure and Camera Fusion
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Solution Overview
Problem
Current posture detection systems primarily focus on the correctness of movement, failing to assess stability, which can lead to sports injuries despite providing feedback on posture.
Innovation Solution
A posture stability detection system incorporating a pressure pad to sense pressure distribution and a camera to capture images, with a processor analyzing center-of-pressure stability and backbone stability values to determine overall posture stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only depth camera or six-axis inertial sensor is used for posture detection, then the device complexity is reduced, but the measurement precision of posture stability is insufficient
Solution Approach 1:
The system segments posture detection into two independent components: backbone posture detection (using camera) and center-of-pressure stability detection (using pressure pad). Each component uses the most suitable sensor type for its specific measurement task, thereby improving overall measurement precision without requiring a single complex device to perform all functions.
Solution Approach 2:
The system merges data from two different detection sources (camera-based backbone detection and pressure pad-based COP detection) to comprehensively assess posture stability. This combination allows the system to leverage the strengths of each detection method while compensating for their individual limitations.
2Reliability
If only movement correctness is detected, then the detection function is simplified, but the reliability of injury prevention is reduced
Solution Approach 1:
The detection system is segmented into two functional modules: one assessing movement correctness (backbone posture) and another assessing movement stability (center-of-pressure variability). This segmentation enables comprehensive safety assessment by independently evaluating both correctness and stability, thereby improving injury prevention reliability.
Solution Approach 2:
The system provides comprehensive feedback by evaluating both movement correctness and stability, giving users actionable information not only about proper posture alignment but also about balance control and stability, which are critical for injury prevention during exercise.
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
Enables accurate assessment of posture stability, reducing the risk of sports injuries by providing comprehensive feedback on both correctness and stability of movement.
Implementation Method 1
The pressure pad is configured to sense a pressure distribution exerted by a to-be-tested subject
Data Source
AI summary
A posture stability detection system including a pressure pad, a camera and a processor is provided. The pressure pad is configured to sense a pressure distribution exerted by a to-be-tested subject. The camera is configured to capture a plurality of posture images of the to-be-tested subject. The processor is configured to: obtain a COP position of the to-be-tested subject according to the pressure distribution in a sample; obtain a COP distribution circle of the to-be-tested subject according to the COP positions in several samples; obtain a COP stability value of the to-be-tested subject according to the COP distribution circles; analyze each posture image to obtain a backbone stability value; and, obtain a posture stability value according to the backbone stability value and the COP stability value.