Continuous blood pressure monitoring method based on single-path ballistocardiogram signal

Abstract

The invention discloses a continuous blood pressure monitoring method based on a single-path ballistocardiogram signal in the field of physiological signal detection, and the method comprises the following steps: collecting the data of a plurality of subjects, and constructing three blood pressure model data sets; calculating Bayesian fusion model parameters by using the three blood pressure model data sets; and performing blood pressure model fitting and systolic pressure calculation on the to-be-tested person by using parameters of the Bayesian fusion model. According to the method, pulse transmission time is extracted by using different signal components in heart impact, and meanwhile, heart impact strength and heart impact signal shape features are measured to serve as a relative systolic pressure calculation basis; the three different indexes are fused through the Bayesian model, the blood pressure calculation accuracy is further improved, the provided continuous blood pressure measurement method has the advantages of being free of loads, convenient to measure, low in equipment complexity and low in cost, the defect that errors are large generally existing in a single parameter model is overcome, and the method has large application potential.

Description

technical field [0001] The invention relates to the field of physiological signal detection, in particular to a continuous blood pressure monitoring method based on a single-channel cardiac shock signal. Background technique [0002] Blood pressure is an important physiological parameter of the human body, and it is also an important factor affecting human health today. Existing blood pressure measurement methods can be classified into single blood pressure measurement and ambulatory blood pressure measurement in terms of measurement methods. Among them, continuous ambulatory blood pressure at night is a more sensitive cardiovascular prognostic indicator than daytime blood pressure. It helps to reveal the etiology of masked hypertension and resistant hypertension, assists in the management of metabolic diseases, and can assist in evaluating sleep quality. Therefore, it has great scientific research value and social value. [0003] The current ambulatory blood pressure meas...

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Problems solved by technology

The invention patent with application publication number CN108186000A discloses a method of blood pressure measurement using ballistocardiogram and PPG signal, but the user needs to wear PPG finger cots for measurement, which cannot be completely unloaded

The invention patent with the application publication number CN108261193A discloses a method for measuring blood pressure by calculating pulse wave transit time based on two-way cardiac shock signals, but using more than two sensing devices and a single transit time parameter for blood pressure fitting and measurement , there are still problems of complex equipment and insufficient measurement accuracy

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