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Pulse signal processing method based on lifting ripple

A processing method and technology of pulse signal, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problems of complex algorithms, high hardware requirements, unfavorable real-time processing, etc. Low, realize the effect of real-time processing

Inactive Publication Date: 2007-03-28
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects that the existing processing method is based on time domain or frequency domain analysis, and only processes a single quasi-periodic complete pulse wave, and the algorithm is complicated, the hardware requirements are high, and it is unfavorable for real-time processing. A pulse signal processing method based on lifting wavelet

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  • Pulse signal processing method based on lifting ripple
  • Pulse signal processing method based on lifting ripple
  • Pulse signal processing method based on lifting ripple

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Embodiment Construction

[0069] Hereinafter, this embodiment will be described with reference to FIGS. 1 to 6.

[0070] This embodiment includes three main steps: signal preprocessing, optimization of multiple complete typical pulse waveforms, and extraction of pulse waveform characteristics.

[0071] The technical implementation scheme of the present invention is shown in Figs. 1 to 2. The waveform obtained by the pulse sensor is converted into a digital stream by the AD converter through a conditioning circuit composed of circuits such as primary amplification, filtering, and secondary amplification, and enters the microprocessor system for a series of processing. Finally, the wavelet characteristic coefficient vector is extracted. These vector data are stored in the memory or external memory FLASH of instruments such as microcontrollers or dsp for subsequent use.

[0072] The implementation of the pulse signal feature extraction method based on lifting wavelet and cluster analysis proposed in this embo...

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Abstract

The present invention belongs to the field of information processing and medical information processing technology, in particular, it relates to a pulse information processing method based on rise wavelet. Said method includes the following steps: using pulse sensor to extract pulse waveform of human body, making said pulse waveform be passed through conditioning circuit and AD converter, and converted into digital signal, then inputted into a microprocessor; in the microprocessor making the above-mentioned digital signal undergo the process of waveform pretreatment, namely adopting adaptive coherent template method to make filtration; then utilizing filtered pulse signal and adopting threshold search method to obtain continuous stable waveform, then using time domain cluster analysis method to obtain optimal waveform containing more than five waveform samples; making the optimal waveform undergo the processes of multilayer wavelet decomposition treatment and threshold quantization treatment so as to finally obtain the characteristic vector W of pulse waveform.

Description

Technical field [0001] The invention relates to information processing and medical signal processing, in particular to a pulse signal processing method based on lifting wavelet. Background technique [0002] The method of non-invasive pulse measurement is mainly to use pressure sensors to capture the pulse of the human body's significant arterial parts. After signal preprocessing and analog-to-digital conversion, the pulse wave data is directly used for analysis, processing and feature extraction, and calculation of related parameters. [0003] At present, when analyzing and processing pulse information, most of them only analyze the pulse wave of a single cycle, or use multiple pulse waves for simple averaging, and randomly select the waveform after simple preprocessing when selecting the waveform. There is a problem with this method: due to the hardware sampling frequency and various interference issues, the pulse waveform data collected by the sensor is unstable. For example, ...

Claims

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Application Information

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IPC IPC(8): A61B5/024G06F19/00G06Q50/00
Inventor 乔俊飞刘洪根
Owner BEIJING UNIV OF TECH
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