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Signal processing method and device

A signal processing and signal technology, applied in medical science, diagnosis, instrumentation, etc.

Pending Publication Date: 2022-05-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a signal processing method and equipment to solve the problem of misjudgment of respiratory sinus arrhythmia as atrial fibrillation, premature beats and other diseases

Method used

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Examples

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example 1

[0051] Example 1: Before acquiring the electrocardiogram ECG signal within the first time period and the photoplethysmography PPG signal within the first time period, that is, before the first time period, the communication device acquires the ECG within the second time period Signal. Exemplarily, the communication device does not acquire the PPG signal during the second time period, and only acquires the ECG signal during the second time period. Further, the communication device determines at least one third feature parameter based on the ECG signal within the second time period, and the third feature parameter indicates the RRI statistical feature of the ECG signal within the second time period. Exemplarily, the characteristic parameters here may refer to RRI mean value, RRI variance, pNN50, skewness, etc., wherein, pNN50 refers to the percentage of the number of RRI exceeding 50ms in the total number of sinus heartbeats, and skewness refers to the effective RRI distribution...

example 2

[0054] Example 2: Before acquiring the electrocardiogram ECG signal within the first time period and the photoplethysmography PPG signal within the first time period, that is, before the first time period, if the state value of the acceleration sensor is greater than the preset state value , the communication device determines to start acquiring the ECG signal within the first time period and the PPG signal within the first time period. Among them, the state value of the acceleration sensor is greater than the preset state value, indicating that the user may be in a state of exercise, so the breathing may be relatively rapid, and the ECG signal is more likely to be affected by breathing, and there is a respiratory sinus arrhythmia that cannot be distinguished only based on the ECG signal. Syndrome or risk of atrial fibrillation, premature beats and other conditions.

[0055] It can be understood that the communication device may also trigger acquisition of the ECG signal withi...

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Abstract

The invention discloses a signal processing method and equipment. The method comprises the following steps: acquiring an ECG signal in a first time period and a PPG signal in the first time period; a first curve is obtained based on the ECG signals in the first time period, the first curve is used for describing density changes of RRI in the ECG signals in the first time period, a second curve is obtained based on the PPG signals in the first time period, and the second curve is an envelope line of the PPG signals in the first time period; and when the correlation coefficient of the first curve and the second curve is greater than a preset threshold value, determining that the ECG signal in the first time period has correlation with the PPG signal in the first time period. By means of the method, whether the ECG signals are affected by respiration or not can be judged, and then respiratory sinus arrhythmia or atrial fibrillation, premature beat and other diseases can be effectively distinguished.

Description

technical field [0001] The embodiments of the present application relate to the field of terminal equipment, and in particular, to a signal processing method and equipment. Background technique [0002] With the development of smart wearable devices, wearable devices such as smart wristbands and smart watches have gradually integrated photoplethysmography (PhotoPlethysmoGraphy, PPG) signal detection, and electrocardiogram (ElectroCardioGram, ECG) signal detection and other health detection functions to provide users with Health information analysis. Among them, ECG signal detection is an important reference factor for diagnosing arrhythmia. At present, smart wearable devices on the market can screen arrhythmias such as atrial fibrillation, premature beats, and sinus rhythm based on ECG signal detection. Specifically, due to hardware limitations, currently screening and only relying on R wave features in ECG signals for arrhythmia judgment. [0003] In addition, as exhalat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0205A61B5/318A61B5/00A61B5/11G06K9/00A61B5/346A61B5/361A61B5/352
CPCA61B5/0205A61B5/681A61B5/1118A61B5/02416A61B5/02438A61B5/7235G06F2218/08A61B5/00A61B5/11A61B5/318A61B5/346A61B5/352A61B5/361A61B5/02A61B5/08
Inventor 杨斌熊浩季映羽王朔陈文娟刘翔宇
Owner HUAWEI TECH CO LTD
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