Blood pressure measuring method based on single-vital-sign monitoring radar

Abstract

The invention relates to the field of biomedical monitoring, in particular to a non-contact blood pressure measuring method which does not restrain a human subject. According to the non-contact bloodpressure measuring method, a single biomedical radar is adopted to be aligned with the abdomen and the back of the human subject, then the human subject is required to hold breath, an aorta pulse wavewaveform signal collected during breath holding is recorded, feature extraction is conducted through an EMD algorithm, all feature points of the aorta pulse wave waveform signal are obtained, and themapping relation of each feature point and the time period of a pulse wave is determined; according to the mapping relation, the pulse wave propagation time which corresponds to the aorta pulse wavewaveform signal and is obtained by the biomedical radar is obtained; and a corresponding blood pressure value can be obtained through the pulse wave propagation time. Compared with a traditional bloodpressure value measuring method, only a single radio frequency senor is needed in the measuring method, precision is higher, and the obvious advantages that instrument contact is not needed and the human subject is not retrained are achieved. The non-contact blood pressure measuring method is effective and feasible, the property is reliable, and the blood pressure value can be obtained accurately.

Description

technical field [0001] The invention relates to the radar field, in particular to a blood pressure measurement method based on a single vital sign monitoring radar. Background technique [0002] Blood pressure measurement methods are mainly divided into invasive blood pressure measurement and non-invasive blood pressure measurement. Invasive blood pressure measurement refers to the invasive implantation of pressure sensors into the aorta of the human body to detect pressure changes during cardiac pacing. Non-invasive blood pressure refers to the use of the relationship between the human body and the relevant quantities to briefly estimate blood pressure. This is a blood pressure measurement method that does no harm to the human body, so it is also the most commonly used blood pressure measurement method at present. [0003] However, the traditional non-invasive blood pressure measurement method is a contact measurement, and requires multiple sensors to measure at the same t...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional non-invasive blood pressure measurement method is contact measurement, and requires multiple sensors to measure at the same time, and the measurement results cannot be obtained in real time

The sensors generally used in contact monitoring restrain the subjects and make the subjects feel uncomfortable, which will affect the physiological characteristics of the subjects and interfere with the monitoring results

[0004] Contact monitoring cannot di

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