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A pulse wave signal acquisition method and system thereof

A technology of acquisition system and acquisition method, which is applied in the field of pulse wave signal acquisition method and its system, can solve the problems of low precision and accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2022-04-22
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under a wide range of static pressure, the method of extracting pulse waves based on a single sensor (such as an optical sensor or a pressure sensor) has low precision and accuracy

Method used

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  • A pulse wave signal acquisition method and system thereof
  • A pulse wave signal acquisition method and system thereof
  • A pulse wave signal acquisition method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 , figure 1 It is a structural block diagram of a specific embodiment of a pulse wave signal acquisition system in the present invention; the pulse wave signal acquisition system includes:

[0038] The static pressure applying module is used to apply static pressure to the wrist of the human body; in this embodiment, refer to figure 1 with figure 2 , figure 2 It is a schematic diagram of the position of a specific embodiment of the static pressure application module, static pressure monitoring module, pressure sensor and optical sensor of a pulse wave signal acquisition system in the present invention; the static pressure application module includes a pressurization module and an inflatable cuff, and The output end of the pressure module is connected with the input end of the inflatable cuff, and the output end of the control module is connected with the input end of the pressure module to control the operation of the pressure module;

[0039] The...

Embodiment 2

[0047] A pulse wave signal acquisition method, applied to the pulse wave signal acquisition system described in embodiment 1, comprising:

[0048] The control module controls the static pressure applying module to apply static pressure to the wrist of the human body according to the preset mode. The preset mode is step-wise decompression from the preset maximum static pressure to zero pressure; in the preset mode, during step-wise decompression, each A step pressure remains unchanged for a preset time;

[0049] Using a pressure sensor to obtain the first pulse wave signal under different static pressures;

[0050] Using an optical sensor to acquire second pulse wave signals under different static pressures;

[0051] The control module obtains the static pressure corresponding to the maximum amplitude of the first pulse wave signal as the first static pressure, and uses the part of the second pulse wave signal corresponding to when the static pressure is lower than the first s...

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Abstract

The invention discloses a pulse wave signal acquisition method and its system. The control module of the invention controls the static pressure applying module to apply static pressure to the wrist of a human body according to a preset mode, and the preset mode is step-wise decompression from the preset maximum static pressure until the pressure is zero; then use the pressure sensor and the optical sensor to obtain the first pulse wave signal and the second pulse wave signal under different static pressures; then obtain the static pressure corresponding to the maximum amplitude of the first pulse wave signal as the first pulse wave signal Static pressure, and the corresponding part of the second pulse wave signal when the static pressure is less than the first static pressure is used as the pulse wave signal of the human body, and the corresponding part of the first pulse wave signal when the static pressure is equal to or greater than the first static pressure is used as The pulse wave signal of the human body; combined with optical sensors and pressure sensors to achieve a wide range of static pressure, accurate human pulse wave signals can still be obtained.

Description

technical field [0001] The invention relates to the field of biological signal measurement, in particular to a pulse wave signal acquisition method and system thereof. Background technique [0002] Optical sensors are currently the most widely used type of commercial sensors for heart rate monitoring in the wearable field. The best place for optical sensors to extract volumetric pulse signals is the end of capillaries, such as fingertips and earlobes. The pressure sensor is the most intuitive and close to the pulse-taking process of traditional Chinese medicine. The best position for the pressure sensor to extract the pressure pulse wave is the artery close to the body surface, such as the radial artery in the wrist and the carotid artery in the neck. Under a wide range of static pressure, the method of extracting pulse waves based on a single sensor (such as an optical sensor or a pressure sensor) has low precision and accuracy. Contents of the invention [0003] The pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/024
CPCA61B5/024A61B5/02444A61B5/0059A61B5/6824A61B5/6826A61B5/6843
Inventor 董瑛楚尧刘慧梁韩留洋王晓浩
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV