Blood pressure measuring device and method estimating based on oscillography and cumulative distribution function

Abstract

The invention provides a blood pressure measuring device estimating based on an oscillography and a cumulative distribution function. The device is characterized by comprising a blood pressure signalcollecting module, a sleeve band, a branch device which is connected with the sleeve band, an inflation pump which is connected with the sleeve band through the branch device, a constant-speed exhaustvalve connected with the sleeve band through the branch device, an electromagnetic exhaust valve which is connected with the sleeve band through the branch device, a pressure sensor which is connected with the sleeve band through the branch device, a controller which is provided with a main control chip, a first driving circuit which is connected with the main control chip and the electromagneticexhaust valve, a second driving circuit which is connected with the main control chip and the inflation pump, a signal modulating circuit which is connected with the main control chip and the pressure sensor, a humming device which is connected with the main control chip, a liquid crystal display screen, a Bluetooth and a power supply. The invention further discloses a blood pressure measuring method estimating based on the oscillography and the cumulative distribution function, and the method is used for measuring diastolic pressure and systolic pressure.

Description

technical field [0001] The invention relates to a blood pressure measuring device and method, in particular to a blood pressure measuring device and method based on oscillometric method and cumulative distribution function estimation. Background technique [0002] The blood pressure measurement principle of the oscillometric method is similar to the Korotkoff sound method. It is a product born with the rapid development of electronic technology. The rapid blood pressure measurement based on the microcontroller is the same as the traditional Korotkoff sound method. Decompression is used to control the closing and opening of blood vessels. The difference is that the closing and opening actions are automatically completed by the microcontroller through a series of algorithms, so as to obtain parameters such as high pressure, low pressure and heart rate of blood pressure. In the measurement process of the oscillometric method, first inflate the cuff to block the blood flow of th...

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Problems solved by technology

To a certain extent, this algorithm improves the accuracy of blood pressure measurement, but the fundamental frequency and harmonics of the heart are extracted based on the pulse wave acquired by the sensor. The calculation process is relatively complicated, and the article does not provide a comparative analysis under complex conditions. Effectiveness and practicality need to be further verified

Soojeong Lee and others believe that the traditional amplitude coefficient method, which uses fixed systolic and diastolic pressure ratio coefficients, is not incomplete, because the ratio coefficient is also obtained through experiments and is an empirical value, which cannot be obtained without theoretical persuasion. Guaranteed to be scientifically valid, so this article proposes to use the Gaussian mixture regression algorithm to determine the blood pressure proportional coefficient, so as to determine the value of systolic and diastolic blood pressure

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