Inertial Sensor Motion Analysis for Propulsion Force Feedback
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Solution Overview
Problem
Existing motion analysis systems do not provide information on a user's attitude or use method during walking or running, limiting the ability to analyze and improve their motion form.
Innovation Solution
A motion analysis system that uses inertial sensors to analyze propulsion forces generated in the body during walking or running, outputting detailed information on each action within a motion cycle, including actions using inertial force, gravity, and muscle strength, allowing users to recognize and improve their form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If existing motion analysis systems only detect biological information or motion information, then the device complexity is reduced, but the information provided to users lacks detail about attitude and body use method
Solution Approach 1:
The patent segments the motion analysis into multiple components by categorizing propulsion forces into different actions (inertial force actions, gravity actions, rotation actions, muscle strength actions). This segmentation allows comprehensive information provision without requiring a single complex analysis system, as each action type can be analyzed and presented separately through software processing of inertial sensor data.
2Measurement precision
If the system provides detailed information on propulsion force for each action, then the measurement precision of motion analysis is improved, but the device complexity increases due to additional processing requirements
Solution Approach 1:
The patent replaces complex mechanical measurement systems with inertial sensors combined with computational analysis. Instead of using multiple specialized sensors for different types of forces, the system uses inertial sensors to capture motion data and then computationally derives propulsion forces for various actions through signal processing and calculation algorithms, reducing hardware complexity while maintaining measurement precision.
3Ease of operation
If the system analyzes motion information using only basic sensors, then the ease of operation is maintained, but the ability to provide actionable feedback for form improvement is limited
Solution Approach 1:
The patent implements a feedback mechanism that processes inertial sensor data to calculate and present propulsion force information for different actions to users. This feedback loop transforms raw sensor data into meaningful insights about body usage efficiency, allowing users to understand and improve their motion form while maintaining ease of operation through automated analysis and clear presentation of results.
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 users to analyze the magnitude and temporal change of propulsion forces, facilitating the identification of habits and deriving measures to improve their walking or running form by providing detailed feedback on each action.
Implementation Method 1
a motion analysis unit that analyzes motion information in walking or running of a user by using a detection result in an inertial sensor
Data Source
AI summary
A motion analysis apparatus includes a motion analysis unit that analyzes motion information in walking or running of a user by using a detection result in an inertial sensor, and an output unit that outputs information regarding a propulsion force generated in the body of the user within one cycle of a motion related to the walking or the running for each action of the user within the one cycle on the basis of the motion information.