Pulse waveform segmentation method and system, equipment and storage medium

A technology of pulse waveform and waveform, which is applied in the field of digital signal analysis and processing, can solve problems affecting processing accuracy and reliability, and achieve the effect of improving fidelity compression ratio

Active Publication Date: 2021-11-05
枫树谷(成都)科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the same filtering strategy for signals with different waveform shapes will also affect processing accuracy and reliability

Method used

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  • Pulse waveform segmentation method and system, equipment and storage medium
  • Pulse waveform segmentation method and system, equipment and storage medium
  • Pulse waveform segmentation method and system, equipment and storage medium

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Embodiment 1

[0053] This embodiment proposes a pulse waveform segmentation method, such as figure 1 As shown, the method of this embodiment mainly includes two parts: the step of performing waveform segmentation according to the shape characteristics of the digitized pulse signal and the step of controlling the accuracy of waveform segmentation.

[0054] Wherein, the step of specifically performing waveform segmentation according to the shape of the digitized pulse signal specifically includes the following steps:

[0055] Step 1, converting the analog pulse signal output by the sensor into a digital pulse signal.

[0056] In this embodiment, after the sensor outputs the detected physical signal in the form of an analog amplitude pulse, it is followed by the waveform digitizer with f s The sampling rate is transformed into a series of digitized (time, amplitude) sequences, that is, digitized signals. Expressed as:

[0057] V(t)=(v1 , v 2 ,…v i ,…v n ) (1)

[0058] In the formula, v ...

Embodiment 2

[0098] This embodiment proposes a pulse waveform segmentation system, specifically as Figure 4 As shown, the system includes a partition module and a control module;

[0099] The segmentation module of this embodiment includes a digitization unit, a shape extraction unit, a skeleton extraction unit, an image recognition unit, and a mapping unit;

[0100] Wherein, the digitization unit is used to convert the analog pulse signal output by the sensor into a digital pulse signal; the digitization unit in this embodiment is realized by the algorithm in step 1 of the above-mentioned embodiment 1, which will not be repeated here.

[0101] The shape extraction unit transforms the digital pulse signal into a two-dimensional waveform image in the airspace; the shape extraction unit in this embodiment is implemented by the algorithm in step 2 of the above-mentioned embodiment 1, and will not be repeated here.

[0102]The skeleton extraction unit extracts the skeleton of the two-dimensi...

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Abstract

The invention discloses a pulse waveform segmentation method and system, equipment and a storage medium. The pulse waveform segmentation method comprises the following steps: 1, converting an analog pulse signal output by a sensor into a digital pulse signal; 2, converting the digital pulse signal into a two-dimensional waveform image in a space domain; 3, performing skeleton extraction on the two-dimensional waveform image in the airspace to obtain an equal-length airspace waveform skeleton; 4, segmenting the equal-length airspace waveform skeleton into N sections of curves; and 5, mapping the segmented waveform back to the time domain, and carrying out waveform segmentation precision control so as to obtain a waveform time domain segmentation result meeting the precision requirement. According to the invention, the same digital signal is subjected to spatial domain and frequency domain analysis according to the specificity of the physical signal output by the sensor, then is segmented in the time domain according to the shape and frequency characteristics of the digital signal, and different filtering strategies can be adopted for different parts subsequently, so that a finer and more effective processing effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of digital signal analysis and processing, and in particular relates to a pulse waveform segmentation method, system, equipment and storage medium based on joint analysis of time domain, frequency domain and space domain. Background technique [0002] In the era of the Internet and the Internet of Things, network terminals are always distributed with a large number of sensors with different shapes and functions. Different sensors output pulse signals carrying different physical information. These signals are often analog signals. In the network layout, the near-end of the sensor will be tight With the waveform digitization device, the analog signal output by the sensor is translated into a digital signal through analog / digital conversion as soon as possible. These digital signals have the following common features: [0003] 1) At this time, the digital signal can be represented by a series of (time, amplitud...

Claims

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Application Information

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IPC IPC(8): G06T11/20G06T7/11G06F17/14
CPCG06T11/203G06T7/11G06F17/141G06T2207/10004G06T2207/20056
Inventor张软玉冯灏曾阳阳付佳
Owner枫树谷(成都)科技有限责任公司