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Pulse wave observing method based on phase space reconstruction

A phase space reconstruction and pulse wave technology, applied in the field of nonlinear system theory, can solve problems such as difficult real-time analysis and monitoring

Active Publication Date: 2012-05-02
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Relying on expert experience, it is necessary to establish an expert diagnosis system for diseases, and the support of a huge standard model library makes it difficult to make real-time analysis and monitoring products

Method used

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  • Pulse wave observing method based on phase space reconstruction
  • Pulse wave observing method based on phase space reconstruction
  • Pulse wave observing method based on phase space reconstruction

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Embodiment 1

[0087] The above steps were appropriately tailored for the specific pulse wave sequence, and liver disease was taken as the research object, and two sets of pulse wave data were collected for phase space reconstruction. Proceed as follows:

[0088] (1) Select the test sample. Two sets of experimental data were collected for comparative analysis. The following is the specific situation of these two sets of data: The first set is the pulse data of healthy and normal young men and women. The second group is collected from the First People's Hospital of Zhejiang Province, the pulse data of 20 patients with liver disease, including men, women, old and young, and different diseases.

[0089] The HK-2000C\D integrated pulse sensor is used to extract the pulse signal of the human left hand radial artery in a steady state, that is, the pulse wave time series sampled at 200Hz.

[0090] (2) Extract pulse wave time series for analysis. The pulse data of 9 people in the normal group and...

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Abstract

The invention discloses a pulse wave observing method based on phase space reconstruction, which has the beneficial effects of visualizing the pulse signals by acquiring and analyzing the pulse data of the object to be observed and adopting the nonlinear system theory and providing an assistant tool for disease diagnosis. The examples of liver disease category prove the feasibility of the method.In the method, the phase space reconstruction theory is adopted, the optimum delay and embedding dimensions of the pulse wave sample signals are computed, the pulse signals are reconstructed and the Cao diagram and the phase space reconstruction diagram under different embedding dimensions are drawn. Strange attractors in the two-dimensional or three-dimensional space are found out. The inventionprovides a simple, convenient and easily implemented analysis method for intelligent pulse wave diagnosis systems.

Description

technical field [0001] The invention relates to the technical field of nonlinear system theory, in particular to a pulse wave observation method based on a phase space reconstruction analysis method. Background technique [0002] Obtaining pulse data and diagnosing human diseases by analyzing pulse data is a convenient and effective way. Since the 1950s, with the continuous development of science and technology, as a means and method of non-invasive diagnosis, TCM pulse diagnosis has been widely used in clinical practice. Many scholars have studied the physiological mechanism of pulse formation and its physiological and pathological significance. On this basis, they try to use mathematical equations, physical models, or waveform diagrams to express the characteristics of common pulse conditions. On the other hand, researchers in many different disciplines use modern detection technology methods and means to describe and record the physical characteristics of pulse condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/02
Inventor 孟濬王磊黄德样黄小静陈啸
Owner ZHEJIANG UNIV