Biological Information Sensing With Shared Noise Removal
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Solution Overview
Problem
Existing biological information measurement systems face challenges in accurately detecting biological signals due to motion artifacts caused by movement or vibration, leading to noise interference that affects the reliability and efficiency of bioimpedance and myoelectric signal measurements.
Innovation Solution
A biological information providing apparatus with a sensor array of electrodes and a determination unit that shares noise signals between main and replica biological information output units, using adaptive filtering and power management to reduce power consumption while effectively removing motion artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion artifacts are removed using traditional filtering methods, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The patent combines multiple biological information output units (main unit and replica units) into a single integrated system. The replica units share noise signal processing resources with the main unit, allowing them to remove motion artifacts without independently generating full noise signals. This merging of noise removal functionality across multiple units reduces overall power consumption while maintaining measurement precision for gesture recognition and biological signal detection.
Solution Approach 2:
The patent creates replica biological information output units that copy the noise signal generation and removal capabilities of a main unit. These replica units use shared noise signals from the main unit rather than generating independent noise signals, enabling them to remove motion artifacts from their measurements without the full power cost of independent noise generation. This copying approach with shared resources resolves the contradiction between precision and power consumption.
2Reliability
If multiple biological information output units operate independently, then measurement reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges the noise signal generation and processing functions across multiple biological information output units. Instead of each unit operating completely independently with full redundancy, the system combines noise removal capabilities by having replica units share noise signals from a main unit. This reduces device complexity while maintaining measurement reliability through the distributed architecture that still processes signals from multiple electrodes and units.
3Measurement precision
If noise signals are generated for each biological information output unit, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The patent implements replica biological information output units that copy the noise signal processing functionality of a main unit. Instead of each unit generating independent noise signals, the replica units copy and share noise signals from the main unit, then apply these shared noise signals to remove motion artifacts from their respective measurements. This copying approach maintains noise removal effectiveness for precise measurement while significantly reducing power consumption by eliminating redundant noise signal generation.
Solution Approach 2:
The main biological information output unit serves a universal function by generating noise signals that are shared and reused by multiple replica units. This single noise signal generation capability performs the noise removal function for the entire system rather than requiring separate generation in each unit, making the noise signal generation process multi-functional and reducing overall power consumption while maintaining measurement precision across all units.
Data Source
AI summary
Provided is a biological information providing apparatus including: a first biological information output unit and a second biological information output unit each including: a biological signal measurement unit which measures a biological signal through a pair of electrodes in contact with a living body, a bioimpedance signal measurement unit which measures a bioimpedance generated between the pair of electrodes to output a bioimpedance signal corresponding to the bioimpedance, a noise signal generation unit which generates, from the bioimpedance signal, a noise signal indicating a noise component included in the biological signal, and a biopotential signal output unit which removes a component of the noise signal from the biological signal to output a resultant signal as a biopotential signal; and a determination unit which outputs a determination signal based on a predetermined condition.