Wearable Motion Detection Calibration via Avatar Reference Deviation
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Solution Overview
Problem
Existing motion detection systems fail to determine when a sensor is not properly prepared, leading to inaccurate measurements due to deviations in the displayed avatar from a reference state despite the user being in the correct position.
Innovation Solution
A motion detection system with a determination unit that detects when a displayed avatar deviates from a reference state, indicating improper sensor preparation, and prompts recalibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is attached to the user without verification of proper preparation, then the device complexity is reduced, but the measurement precision deteriorates due to avatar deviation from reference state
Solution Approach 1:
The determination unit performs preliminary verification by comparing the displayed avatar with the reference state before actual measurement begins. This preliminary action identifies improper sensor preparation in advance, ensuring accurate measurements without adding complexity during the measurement process itself.
Solution Approach 2:
The system provides feedback by displaying the avatar's position relative to the reference state and alerting the user when deviation is detected. This feedback mechanism enables users to correct sensor placement issues before measurement, improving accuracy while maintaining simple system architecture.
2Reliability
If the system continuously monitors avatar position, then the reliability is improved, but the use of energy increases
Solution Approach 1:
The determination unit monitors the avatar's position periodically rather than continuously, checking for deviation from the reference state at appropriate intervals. This periodic monitoring maintains reliability by detecting preparation issues while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
A motion detection system includes: a sensor configured to be attached to a user and to detect a motion of the user; a display unit configured to display an avatar that moves in conjunction with an output of the sensor, and a determination unit configured to determine that the sensor is not properly prepared when the displayed avatar is deviated from a reference state although the user is in the reference state.