Non-invasive blood pressure continuous monitoring method

Abstract

The invention discloses a non-invasive blood pressure continuous monitoring method. According to the non-invasive blood pressure continuous monitoring method, weak signals of a face part of a human face are amplified by an improved Euler image amplification method so that signal extraction is convenient; the human face detection rate is increased through an MTCNN human face detection algorithm which is high in real-time properties and high in detection rate, so that the detection speed is high, and the real-time properties are higher; a G signal is combined to be used as an input signal of pulse wave calculation, so that the accuracy of a pulse wave signal is increased, accurate, quick, non-inductive non-invasive measurement of pulse waves is realized, and when the weight and the length of a person to be detected are inputted, continuous blood pressure measurement can be completed. The operation is simple, convenient and movable, and a base is provided for medical diagnosis.

Description

technical field [0001] The invention relates to a non-invasive blood pressure continuous monitoring method, which belongs to the technical field of precise measurement of physiological characteristics. Background technique [0002] Hypertension is one of the main diseases in our country. The current blood pressure measurement methods are mainly divided into two types: invasive measurement and non-invasive measurement. The invasive measurement method is to insert the pressure sensor into the arterial blood vessel for direct measurement, which has certain damage to human blood vessels and skin. , it is mainly used clinically for critically ill patients; non-invasive measurement methods mainly include Korotkoff sound method, oscillometric method, arterial tension measurement method, pulse wave measurement method, etc. The non-invasive measurement method has the advantages of simple operation and no harm to the human body. Scientific and technological workers have carried out ex...

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Problems solved by technology

Calculate the pulse wave transit time, establish a linear fitting mathematical model between the pulse wave transit time and blood pressure, determine the fitting line parameters of each subject through experiments, and obtain the continuous blood pressure estimation formula; the above method needs to pass the data through the serial port It is transmitted to the host computer, and the signal filtering, feature point recognition and blood pressure estimation can be realized on the host computer, but it cannot be carried around; in addition, the subjects of this experiment are healthy people aged 18 to 40. For the elderly and people with high blood pressure People with diseases such as diabetes and diabetes need further research; this algorithm only uses the conduction time, and the correlation between other pulse wave waveform characteristic parameters and blood pressure needs to be further studied; Insufficient resistance

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