Dynamic blood pressure measuring method and system

A dynamic blood pressure and measurement method technology, applied in the electronic field, can solve the problems of long measurement time for users, failure of blood vessels to recover in time, user discomfort and other problems, and achieve the goal of reducing measurement time, reducing the error of measurement results, and improving comfort Effect

Inactive Publication Date: 2017-08-18
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the inventor applied the prior art, he found that for the method of measuring blood pressure by lowering blood pressure, the upper arm was subjected to greater pressure for a long time, which would cause the blood vessels of the user, especially the elderly, to be compressed and unable to recover in time, resulting in errors in the measurement results. ; The user takes a long time to measure, which will cause discomfort to the user

Method used

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  • Dynamic blood pressure measuring method and system
  • Dynamic blood pressure measuring method and system
  • Dynamic blood pressure measuring method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] refer to figure 1 , shows a flow chart of an embodiment of an ambulatory blood pressure measurement method according to Embodiment 1 of the present invention, which may specifically include the following steps:

[0056] In step 101, the pressure value of the airbag is controlled to rise at a constant speed by dynamically adjusting the rotation speed of the pump.

[0057]In the embodiment of the present invention, the entire pressurization process can be divided into three stages, namely the early stage, the middle stage and the late stage. The initial pressurization stage belongs to the early stage. Since there is no gas in the airbag at the beginning of pressurization, the airbag needs to be inflated first. If the speed of the pump is fixed, the initial inflation time will be longer and the pressure value in the airbag will rise slowly. Therefore, at the beginning of pressurization, adjust the pump at a higher speed to control the pressure value of the air bag to rise...

Embodiment 2

[0082] refer to Figure 4 , which shows a flow chart of an embodiment of an ambulatory blood pressure measurement method according to Embodiment 2 of the present invention, which may specifically include the following steps:

[0083] Step 401, dynamically adjust the rotation speed of the pump based on the variation of the duty ratio of the pins of the control chip.

[0084] In the embodiment of the present invention, the rotation speed of the pump is controlled by controlling the duty ratio of the pump signal pin of the chip, and the variation of the rotation speed of the pump is dynamically adjusted based on the variation of the duty ratio of the pump signal pin of the control chip. The duty cycle is directly proportional to the pump speed. When the duty cycle is larger, the pump speed is higher; when the duty cycle is smaller, the pump speed is smaller.

[0085] The duty cycle refers to the ratio of the time occupied by the pulse to the total time within a period of continu...

Embodiment 3

[0113] refer to Figure 5 , which shows a structural block diagram of an embodiment of an ambulatory blood pressure measurement system according to Embodiment 3 of the present invention, which may specifically include the following units:

[0114] The system includes: a control chip, a pressure sensor, an air bag, and a pump;

[0115] The control chip includes:

[0116] The rotation speed adjustment unit 501 is used to dynamically adjust the rotation speed of the pump to control the pressure value of the air bag to rise at a constant speed.

[0117] The signal acquisition unit 502 is configured to acquire the pressure value based on the pressure sensor during the pressurization process.

[0118] The signal processing unit 503 filters the pressure value to obtain a pulse wave, and identifies a peak point of the pulse wave.

[0119] The first judging unit 504 is configured to start judging whether the current pressure value of the airbag is greater than or equal to the predic...

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Abstract

According to the embodiment, the invention provides a dynamic blood pressure measuring method and a measuring system, and relates to the technical field of electronics. According to the embodiment, by dynamically adjusting rotating speed of a pump, a pressure value of an airbag is controlled to rise at a uniform speed; in a pressurizing process, the pressure value is acquired on the basis of a pressure sensor and the pressure value is filtered, so that a pulse wave is obtained; meanwhile, peak values of the pulse wave are recognized; by a stepped judgement mode, it needs to judge whether the current pressure value of the airbag is greater than or identical to a pre-judged pressurizing value or not; and when the current pressure value is greater than or identical to the pre-judged pressurizing value, it needs to stop pressurizing and to determine systolic pressure and diastolic pressure on the basis of the peak points of the pulse wave. Blood pressure is measured in the pressurizing process, so that a duration that a forearm is stressed by pressure is shortened and a measuring time is reduced, errors, which are caused when blood vessels of a user are compressed for a long time and cannot recover timely, of a measuring result are reduced, and user's comfort in using the system is improved; and in a process of measuring the blood pressure, it completes stable pressurizing at a uniform speed and a proper pressurizing value is reached in accordance with individual needs of the user, so that accuracy of measurement is enhanced.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a dynamic blood pressure measurement method and system. Background technique [0002] With the continuous development and progress of modern medicine, people pay more and more attention to health. Both high blood pressure and low blood pressure will cause certain harm to the human body. Nowadays, the main methods of measuring blood pressure are the Korotkoff sound method and the constant volume method. , oscillometric method, etc., because the oscillometric method of measuring blood pressure is simple, the result is more accurate, easy to carry, strong anti-interference and repeatability, so it is widely used in electronic blood pressure monitors. [0003] At present, dynamic blood pressure measurement can be realized through an electronic sphygmomanometer. First, pressurize quickly to a certain pressure value, then slowly discharge the gas in the airbag, obtain pulse waves d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0225
CPCA61B5/02108A61B5/0225A61B5/7235
Inventor 周思路黄安鹏
Owner PEKING UNIV
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