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Method and system for detecting interference pulse signals

A pulse signal and detection method technology, applied in the field of signal processing, can solve problems such as easy misjudgment, pulse envelope calculation error, blood pressure calculation error, etc., to achieve the effect of improving accuracy and not being easy to misjudge

Active Publication Date: 2016-06-01
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the pulse signal is subject to a lot of interference, it is easy to misjudge the interference pulse based on local features, resulting in an error in the calculation of the pulse envelope, which in turn leads to an error in the calculation of blood pressure

Method used

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  • Method and system for detecting interference pulse signals
  • Method and system for detecting interference pulse signals
  • Method and system for detecting interference pulse signals

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Embodiment Construction

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] See figure 1 The schematic flow chart of the interference pulse signal detection method of an embodiment in, includes step S101 to step S103:

[0019] S101: Detect a change in the amplitude of the pulse signal, and obtain a pulse amplitude sequence according to the change in the amplitude.

[0020] In this step, the amplitude change of the pulse signal can be detected by the ascending oscillometric method. Specifically, an air pump is used to inflate and pressurize the inflatable cuff, and the inflatable cuff is used to compress the arteries. As the cuff pressure increases, the arteries The blood vessel presents a changing process of fully open-half-closed-completely blocked. Among them, the pressure of the inflatable cuff can be realized by the single-chip P...

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Abstract

The invention provides a method and a system for detecting interference pulse signals.The method includes detecting change of the amplitudes of pulse signals to obtain pulse amplitude sequences; fitting the pulse amplitude sequences to obtain pulse amplitude fitted curves; computing errors between various pulse amplitude points in the pulse amplitude sequences and corresponding positions in the pulse amplitude fitted curves; determining that the pulse signals corresponding to the pulse amplitude points are the interference pulse signals if the errors are higher than preset threshold values.The method and the system have the advantages that the interference pulse signals are difficult to misjudge when high interference is applied to the pulse signals, and accordingly the inference pulse signal detection accuracy can be improved.

Description

Technical field [0001] The invention relates to the field of signal processing, in particular to a method and system for detecting interference pulse signals. Background technique [0002] Blood pressure (BP) refers to the pressure that acts on the blood vessel wall when the blood flows in the blood vessel, and it is the driving force for the blood to flow in the blood vessel. When the ventricles contract, blood flows from the ventricles into the arteries. At this time, the blood pressure on the arteries is the highest, which is called systolic blood pressure (systolic blood pressure, SBP); when the ventricles dilate, the arteries retract elastically, blood flows slowly forward, and blood pressure drops. The pressure of blood on arteries is called diastolic blood pressure (DBP). Since blood vessels are divided into arteries, capillaries and veins, blood pressure is divided into arterial blood pressure, capillary blood pressure and venous blood pressure. Generally speaking, bloo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02A61B5/021A61B5/0225
CPCA61B5/02A61B5/02116A61B5/02141A61B5/0225A61B5/7203A61B5/7221
Inventor 郑晓波
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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