Pedaling State Detection Using Sole Angle Analysis
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Solution Overview
Problem
The accuracy of pose determination using acceleration sensors is compromised by noise, particularly when determining the state of a user riding a bicycle.
Innovation Solution
An information processing device that acquires motion information from a foot-mounted motion measurement device and determines whether the user is in a pedaling state based on the angle between the sole and the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If acceleration sensor is used for pose determination, then the device can be simple and low-cost, but the determination accuracy decreases due to noise
Solution Approach 1:
The patent introduces motion information from a foot-mounted motion measurement device as an intermediary to improve pose determination accuracy. This additional measurement source acts as a mediator that compensates for the noise in acceleration data, enabling more accurate state determination while maintaining system simplicity
Solution Approach 2:
The patent changes the measurement parameters by incorporating foot motion information (position, velocity, acceleration) in addition to body acceleration data. This parameter expansion allows the system to distinguish between different states (rest, walking, running) more accurately by analyzing the combined motion characteristics
2Adaptability or versatility
If acceleration-based pose determination is applied to bicycle riding state, then the method can be universally applied to various poses, but the noise decreases determination accuracy
Solution Approach 1:
The patent applies a multi-functional measurement approach where the foot-mounted motion measurement device provides data that serves multiple purposes: determining pedaling state, distinguishing from walking/running, and detecting rest states. This universal measurement solution handles various bicycle riding scenarios accurately
Solution Approach 2:
The foot motion information serves as an intermediary that specifically addresses the noise problem in bicycle riding detection. By analyzing foot motion patterns, the system can reliably distinguish pedaling states from other activities even in the presence of acceleration noise
Data Source
AI summary
Provided is an information processing device including an acquisition unit configured to acquire motion information of a foot of a user measured by a motion measurement device and a determination unit configured to determine whether or not the user is in a pedaling state in which the user pedals a bicycle based on an angle between a sole and a ground generated from the motion information.