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A ppg signal clustering center acquisition method and device and ppg signal processing method and device

An acquisition method and signal clustering technology, applied in the field of signal processing, can solve problems such as large workload and work content

Active Publication Date: 2022-07-12
GUANGDONG JIUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The currently commonly used PPG signal clusters based on clustering results often have a huge and repetitive workload and work content in the manual marking method

Method used

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  • A ppg signal clustering center acquisition method and device and ppg signal processing method and device
  • A ppg signal clustering center acquisition method and device and ppg signal processing method and device
  • A ppg signal clustering center acquisition method and device and ppg signal processing method and device

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Embodiment Construction

[0077] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will now be described in detail with reference to the accompanying drawings.

[0078] like figure 1 As shown, in the first embodiment of the method for obtaining a PPG signal clustering center of the present application, the method includes the following steps: S11, obtaining a sample PPG signal of a preset length, and preprocessing the sample PPG signal to obtain several first pulses, Obtain the first pulse that satisfies the first preset condition and perform DC de-DC to obtain the second pulse, wherein the PPG signal is a photoplethysmographic pulse waveform signal; specifically, the sample PPG signal should be enough to be able to truly respond Various scenarios represented by PPG signals. The purpose of preprocessing the PPG signal is to extract the pulse that can represent the real information of ...

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Abstract

The present application relates to a method for obtaining a PPG signal clustering center, a PPG signal processing method and device, including: S11, obtaining and preprocessing a sample PPG signal to obtain a second pulse; S12, fast Fourier transforming the second pulse and extracting frequency components, Normalize its characteristic parameters to obtain the third pulse; S13, cluster the third pulse to obtain the initial cluster cluster and the initial cluster center; S14, construct the MAE similarity with the normalized parameter MAE value of the two initial cluster centers degree matrix; S15, obtain the MAE value of the second minimum value of the row vector in the MAE similarity matrix, when there are two MAE values ​​smaller than the first preset value and corresponding to the same initial cluster center, merge the initial cluster corresponding to the MAE value. The cluster is a new initial clustering cluster, and the mean pulse of the initial clustering center corresponding to the MAE value is used as the initial clustering center of the new initial clustering cluster to perform S14, otherwise, the initial clustering center is used as the target clustering center .

Description

technical field [0001] The present application relates to the technical field of signal processing, and more particularly, to a method and device for acquiring a PPG signal clustering center and a PPG signal processing method and device. Background technique [0002] Hypertension is one of the most common chronic diseases in life and the primary factor affecting cardiovascular and cerebrovascular diseases. There are many reasons for high blood pressure: bad living habits, genetic factors, drug factors, and other diseases. Therefore, it is very important to regularly monitor blood pressure and provide early warnings for physiological diseases. At present, most of the blood pressure monitoring methods use cuff-type devices, but due to their inportability, they cannot be used in daily life scenarios, and cannot monitor blood pressure continuously for a long time. Photoplethysmograph (PPG) signals are widely used in medicine to measure heart rate and blood oxygen saturation. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62A61B5/024A61B5/1455A61B5/00
CPCA61B5/02416A61B5/14551A61B5/7225A61B5/7203A61B5/7257G06F2218/08G06F2218/12G06F18/23G06F18/24
Inventor 刘锐芳冯谦谨
Owner GUANGDONG JIUZHI TECH CO LTD