Wearable Premature Beat Detection With PPG-Triggered ECG Typing
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Solution Overview
Problem
Existing wearable devices struggle with continuous premature beat detection, failing to differentiate between premature atrial contraction (PAC) and premature ventricular contraction (PVC) using photoplethysmography (PPG), leading to inaccurate risk reminders or insufficient knowledge of cardiac risks.
Innovation Solution
Combining PPG and electrocardiography (ECG) sensors to continuously detect premature beats and determine their type, calculating load based on waveform matching, and providing differentiated risk reminders for PAC and PVC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If PPG detection technology is used for continuous premature beat detection, then continuous detection capability is achieved, but inability to differentiate between PAC and PVC occurs
Solution Approach 1:
The patent combines PPG and ECG detection technologies into a unified detection system. The PPG sensor continuously monitors heart rhythm to detect premature beats, while the ECG sensor is activated when premature beats are detected to determine the specific type (PAC or PVC). This merging allows the system to achieve both continuous detection capability and accurate premature beat type differentiation.
2Measurement precision
If ECG measurement is performed for premature beat detection, then premature beat type can be determined, but user experience deteriorates due to requiring user action
Solution Approach 1:
The system implements periodic ECG measurement triggered by premature beat detection events rather than continuous ECG monitoring. When the PPG sensor detects premature beats, the ECG sensor is activated to determine the type. This periodic action ensures accurate premature beat type determination while minimizing user burden, as users only need to wear the device continuously without performing specific actions for ECG measurement.
Solution Approach 2:
The system automatically activates ECG measurement when premature beats are detected, eliminating the need for user initiation. The device autonomously determines whether to perform ECG measurement based on PPG detection results, providing self-service functionality that maintains measurement precision while improving ease of operation.
3Device complexity
If premature beat detection is performed without type differentiation, then detection simplicity is maintained, but risk assessment accuracy becomes insufficient
Solution Approach 1:
The detection process is segmented into two stages: first, PPG-based continuous monitoring detects premature beats and triggers the analysis; second, ECG-based analysis determines the specific type (PAC or PVC). This segmentation allows the system to maintain simplicity in the continuous monitoring phase while achieving high risk assessment accuracy through targeted ECG analysis only when necessary.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Accurately identifies premature beat types and loads, reducing false reminders and enhancing user awareness of cardiac risks through comprehensive detection and differentiated risk alerts.
Implementation Method 1
Research in this aspect first focuses on atrial fibrillation (AF) detection, and gradually spreads to premature beats and other arrhythmia. Currently, an increasing quantity of watches are provided with ECG and PPG detection capabilities.
Implementation Method 2
An electrocardiograph (ECG) is reflection of an electrical activity of a heart on a human body surface. It is an important basis for detection and diagnosis of arrhythmia
Data Source
AI summary
This application discloses a premature beat detection method, an electronic device. The premature beat detection method in this application includes: performing premature beat detection on a user by using a premature beat detection function; determining a premature beat type of the user by using a premature beat type determining function when detecting that the user has a premature beat by using the premature beat detection function, and calculating premature beat load of the user based on detection data obtained by the premature beat detection function; and reminding the user of a premature beat risk when the calculated premature beat load is greater than a premature beat load threshold corresponding to the premature beat type determined by the premature beat type determining function.