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A baseline recovery method, device and medical testing equipment

A technology of medical detection equipment and recovery device, applied in the field of medical electronics, can solve the problems of low cut-off frequency, unable to meet the requirements of use, long baseline time, etc., to achieve the effect of reducing time and ensuring no distortion

Active Publication Date: 2020-10-13
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the characteristic that the lower the cutoff frequency of the high-pass filter, the longer it takes for the baseline to return to zero, it takes a long time for the baseline to return to zero, which cannot meet the requirements of use.

Method used

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  • A baseline recovery method, device and medical testing equipment
  • A baseline recovery method, device and medical testing equipment
  • A baseline recovery method, device and medical testing equipment

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] refer to figure 2 , figure 2 It is a structural schematic diagram of an embodiment of the baseline restoration device of the present invention. The baseline restoration device 100 includes: a filter 110 , a high-amplitude baseline detector 120 and a baseline restoration unit 130 . Wherein, the output end of the filter 110 is connected to the high-amplitude baseline detector 120 , the high-amplitude baseline detector 120 is connected to the baseline resto...

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Abstract

This disclosure relates to baseline restoration methods and apparatuses and medical detecting equipment thereof. The baseline restoration method comprises: determining whether there is a high-amplitude baseline in an input signal by previous k output signals (Y1, . . . , Yk) of a filter, where k is a natural number and k≧1; setting the previous m output signals (Y1, . . . , Ym) of the filter as Y′ when there is a high-amplitude baseline in the input signal, where Y′ is a desired output signal of the filter; and using a current input signal X0, the previous n input signals (X1, . . . , Xn), and the previous m output signals (Y1, . . . , Ym) of said filter to obtain a current output signal Y0 of said filter.

Description

technical field [0001] The invention relates to the field of medical electronics, in particular to a baseline recovery method, device and medical detection equipment. Background technique [0002] During the signal acquisition process, due to factors such as polarization voltage and zero point drift, the baseline of the signal will far exceed the dynamic range of the signal. During the display of the signal, this high-amplitude baseline can cause the signal to be out of the display range, or only part of the signal to be in the display range. [0003] In order to be able to observe the complete signal, the signal must be debaselined. The prior art provides a baseline recovery method. Since the baseline is a low-frequency signal, the baseline can be filtered out by using a high-pass filter. The frequency of the baseline is generally low, so the cut-off frequency of the high-pass filter needs to be set very low. However, due to the characteristic that the lower the cut-off ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H17/02
CPCG01T1/17H04N9/68
Inventor 王沛叶文宇罗申
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD