Bio-information Analysis Device Matching Rate Calculation
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Solution Overview
Problem
Existing methods for identifying the origin of arrhythmias, such as premature ventricular contractions, face reliability issues due to high correlation coefficients when biometric waveforms have similar shapes but different magnitudes, leading to inaccurate identification of occurrence origins.
Innovation Solution
A bio-information analysis device that measures and calculates a matching rate of biometric waveforms based on both shape and magnitude, using a configuration that includes a measuring unit for electrocardiogram waveforms, a calculating unit for determining the matching rate, and an electrical stimulation unit for pacing, which allows for the exclusion of waveform components due to stimulation potential and phase reversal corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If correlation coefficient is used to compare biometric waveforms, then the calculation is simple, but the matching rate reliability is low when magnitudes differ
Solution Approach 1:
The patent changes the parameters used for waveform comparison from only shape-based correlation coefficient to include both shape and magnitude. Specifically, it introduces magnitude ratio calculation and combines it with correlation coefficient to form a comprehensive matching rate, thereby improving reliability while maintaining reasonable calculation complexity
Solution Approach 2:
The patent creates a composite evaluation metric by combining multiple parameters (correlation coefficient for shape similarity and magnitude ratio for amplitude similarity) into a unified matching rate calculation, similar to how composite materials combine different properties to achieve superior performance
2Ease of operation
If only shape similarity is considered in waveform comparison, then the calculation is straightforward, but the identification accuracy of arrhythmia origin is insufficient
Solution Approach 1:
The patent extends the comparison parameters from shape-only to include both shape and magnitude by introducing magnitude ratio calculation. This allows the system to distinguish between waveforms that have similar shapes but different magnitudes, thereby improving identification accuracy while maintaining calculation simplicity through standardized formulas
3Quantity of substance
If pacing waveform components including stimulation potential are included in comparison, then the measurement is complete, but the matching rate reliability decreases
Solution Approach 1:
The patent extracts and removes the stimulation potential component from the pacing waveform before performing comparison. By separating this artificial component from the natural arrhythmia waveform, the system achieves more reliable matching results while still utilizing the complete pacing waveform data for identification purposes
4Device complexity
If phase-reversed portions of waveforms are compared directly, then the comparison is simple, but the matching rate calculation is inaccurate
Solution Approach 1:
The patent applies phase reversal correction by inverting the sign of magnitude values in phase-reversed portions of the waveform. This ensures that waveforms with opposite phases are properly aligned and compared, improving matching rate accuracy without significantly increasing comparison process complexity
Data Source
AI summary
A bio-information analysis device includes a measuring unit that measures biometric waveforms of a subject, and a calculating unit that calculates a matching rate of the biometric waveforms based on shapes and magnitudes of the biometric waveforms measured by the measuring unit. In the bio-information analysis device, the biometric waveforms may be electrocardiogram waveforms.