Biological Information Measurement Device Motion Adaptive Control
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Solution Overview
Problem
Biological information measurement devices worn on the body for extended periods face challenges in accurately measuring data due to body motion, leading to unreliable results and inefficient data collection, as existing technologies do not effectively differentiate between successful and failed measurements, thereby reducing the significance of long-term monitoring.
Innovation Solution
A biological information measurement device with a pulse wave detection unit, system control unit, and body motion detection unit that calculates and stores biological information only when the pulse wave meets specific stability conditions, generating measurement efficiency information to trigger notifications or controls, such as stopping measurements, to improve data reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If continuous pulse wave detection is performed during body motion, then measurement duration is extended, but measurement reliability deteriorates
Solution Approach 1:
The system continuously monitors motion state through acceleration sensors and provides feedback to the measurement control. When motion exceeds threshold values, the system automatically adjusts measurement behavior ( pausing or stopping), creating a closed-loop control that adapts to changing conditions and maintains data quality throughout extended wear periods
Solution Approach 2:
The measurement system transitions from a static continuous measurement approach to a dynamic adaptive approach. The measurement state (acquiring, paused, or stopped) changes dynamically based on real-time motion detection, allowing the system to optimize between measurement continuity and data reliability under varying body motion conditions
2Quantity of substance
If all pulse wave data is stored regardless of quality, then data quantity increases, but data quality deteriorates
Solution Approach 1:
The system extracts only the valuable portion of measured data by evaluating each pulse wave measurement against motion threshold criteria. Measurements taken during excessive motion are excluded from storage, separating high-quality data from low-quality data and ensuring that only reliable measurements contribute to the final dataset
Solution Approach 2:
Different quality standards are applied to different measurement segments based on local motion conditions. Each measurement point is evaluated independently against motion thresholds, allowing the system to maintain high data quality standards while preserving the maximum possible quantity of valid measurements throughout the monitoring period
3Productivity
If measurement continuation is prioritized during motion, then productivity increases, but measurement precision deteriorates
Solution Approach 1:
The system implements periodic evaluation of motion state at defined intervals during wear. This allows measurements to proceed during acceptable motion periods while pausing during excessive motion, creating a rhythmic pattern of measurement acquisition that optimizes both productivity and precision over the long term
Data Source
AI summary
A biological information measurement device includes: a pulse wave detection unit that continuously detects pulse waves from a living body; a biological information calculation unit that calculates biological information based on pulse waves detected by the pulse wave detection unit and stores, in a storage medium, biological information calculation results information including said biological information; a storage control unit that stores, in the storage medium, pulse wave detection results information by the pulse wave detection unit in order to calculate biological information included in biological information calculation results information; a measurement efficiency information generation unit that generates measurement efficiency information indicating measurement efficiency for biological information included in biological information calculation results information, generating same based on the biological information calculation results information and pulse wave detection results information; and a control unit that notifies when the measurement efficiency information fulfills a condition.