Signal Synchronization Device for ECG and Heart Sound Calibration
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Solution Overview
Problem
Current clinical practices face difficulties in synchronizing electrocardiographic and heart sound signals, which hinders early diagnosis and research of cardiovascular diseases, as these signals are typically acquired and analyzed separately rather than simultaneously.
Innovation Solution
A signal synchronization device that receives and synchronizes electrocardiographic and heart sound signals using a signal receiving module, synchronization factor generation module, and synchronization module, performing time and frequency domain transformations to calibrate the signals, ensuring they are synchronous in the time domain for enhanced diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrocardiographic signals and heart sound signals are acquired separately in current clinical practice, then the acquisition process is simple and equipment requirements are low, but the signals cannot be synchronized in time domain which hinders accurate diagnosis of cardiovascular diseases
Solution Approach 1:
The patent combines separate electrocardiographic signal acquisition and heart sound signal acquisition into a unified synchronized acquisition system. The signal receiving module receives both types of signals simultaneously, and the synchronization module coordinates their time domains, merging previously separate measurement processes into one integrated system that achieves precise temporal alignment between ECG and heart sound signals.
Solution Approach 2:
The patent introduces a synchronization module as an intermediary component that mediates between the electrocardiographic signal processing path and the heart sound signal processing path. This module generates synchronization factors and performs time domain calibration, acting as a bridge that coordinates the timing of both signal types without requiring complete system redesign.
2Reliability
If separate acquisition of electrocardiographic and heart sound signals is used, then equipment cost and system complexity are reduced, but diagnostic accuracy for cardiovascular diseases decreases due to lack of synchronous analysis capability
Solution Approach 1:
The patent performs preliminary synchronization calibration on the signals during the acquisition and processing phase, before the actual diagnostic analysis is conducted. The synchronization module pre-aligns the time domains of ECG and heart sound signals, creating synchronized calibration factors that are then used in subsequent diagnostic processes, ensuring reliability is established beforehand.
Solution Approach 2:
The patent transforms signals from separate time domain representations into a synchronized time domain representation by changing the temporal parameters. The synchronization module applies time domain calibration using synchronization factors, effectively adjusting the timing parameters of one or both signals to achieve alignment, thereby improving diagnostic reliability without requiring fundamentally new equipment.
3Loss of information
If synchronous acquisition of electrocardiographic and heart sound signals is implemented, then accurate synchronous analysis for cardiovascular disease diagnosis is enabled, but the device complexity and processing requirements increase
Solution Approach 1:
The patent extracts the synchronization function as a separate, dedicated module within the signal processing system. Rather than attempting to synchronize signals at multiple levels throughout the system, the invention isolates the synchronization operation into a specific component that generates calibration factors and performs time domain alignment, reducing overall system complexity while maintaining information integrity.
Data Source
AI summary
The invention provides a signal synchronization device, which obtains electrocardiographic, heart sound signal calibration factors by performing time domain and frequency domain transformations for an electrocardiographic signal and a heart sound signal, and thereby performs calibration for the electrocardiographic signal and the heart sound signal to synchronize the electrocardiographic signal and the heart sound signal in time domain, such that a diagnosis rate for cardiovascular disease is increased. Moreover, the invention further provides a stethoscope with signal synchronization processing, an auscultation information output system and a symptom diagnosis system capable of signal synchronization.