Multipoint pulse wave detection method and device

Abstract

The invention provides a multipoint pulse wave detection method and device.The method comprises the steps that two paths of pulse wave signals at the wrist of a human body are collected, the pulse wave signals are sequentially subjected to low-pass filtering, pulse signal cycle solving, periodical rectangular pulse construction and independent component analysis constraining, interference of motion artifacts in the pulse signals is eliminated, and pulse wave signals free of motion interference are obtained; meanwhile, a glove is adopted to serve as a carrier, reflecting optoelectronical sensors and a data transmission module are installed on the glove to collect and send the pulse wave signals, and a signal processing module in a mobile terminal receives the pulse wave signals and conducts corresponding artifact eliminating processing.The multipoint pulse wave detection method and device have the advantages that richer human body cardiovascular system physiological information can be obtained from the pulse wave signals, the motion artifacts in the signals can be well eliminated, and more pulse wave waveform characteristics can be recovered.

Description

technical field

[0001] The invention belongs to the technical field of medical living body vital sign detection, and relates to a method and device for multi-point pulse detection. Background technique

[0002] The periodic contraction and relaxation of the human ventricle leads to the contraction and relaxation of the aorta, making the blood flow pressure propagate from the root of the aorta along the entire arterial system in the form of waves. This wave is called pulse wave. The comprehensive information of the shape, intensity, speed and rhythm presented by the pulse wave largely reflects the hemodynamic characteristics of many physiological and pathological aspects of the human cardiovascular system. By measuring the pulse, not only some physiological reference data and information of blood flow, blood pressure and other physiological states can be collected, but the pulse wave itself contains a lot of reference information with diagnostic value.

[0003] Photoplethysm...

Examples

Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] The multi-point pulse wave detection method of the present invention, as figure 1 As shown, it is realized through the following steps:

[0031] Step 1: Obtain a total of two pulse wave signals at Cunkou and Shenmen points on the wrist of the human body.

[0032] Step 2: Collect two pulse wave signals, but if figure 2 As shown, the continuous acquisition of the subject's pulse wave signal during the exercise process is obviously disturbed by motion artifacts.

[0033] Step 3: Perform low-pass filtering on the two pulse wave signals to filter out high-frequency noise.

[0034] Step 4: Since the periods of the two pulse wave signals are the same, the autocorrelation function of one of the pulse wave signals is solved to obtain the period T of the pulse wave signal.

[0035] Step 5: According to the period T of the pulse wave signal obtained in step ...

technical field

[0001] The invention belongs to the technical field of medical living body vital sign detection, and relates to a method and device for multi-point pulse detection. Background technique

[0002] The periodic contraction and relaxation of the human ventricle leads to the contraction and relaxation of the aorta, making the blood flow pressure propagate from the root of the aorta along the entire arterial system in the form of waves. This wave is called pulse wave. The comprehensive information of the shape, intensity, speed and rhythm presented by the pulse wave largely reflects the hemodynamic characteristics of many physiological and pathological aspects of the human cardiovascular system. By measuring the pulse, not only some physiological reference data and information of blood flow, blood pressure and other physiological states can be collected, but the pulse wave itself contains a lot of reference information with diagnostic value.

[0003] Photoplethysm...

Examples

Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] The multi-point pulse wave detection method of the present invention, as figure 1 As shown, it is realized through the following steps:

[0031] Step 1: Obtain a total of two pulse wave signals at Cunkou and Shenmen points on the wrist of the human body.

[0032] Step 2: Collect two pulse wave signals, but if figure 2 As shown, the continuous acquisition of the subject's pulse wave signal during the exercise process is obviously disturbed by motion artifacts.

[0033] Step 3: Perform low-pass filtering on the two pulse wave signals to filter out high-frequency noise.

[0034] Step 4: Since the periods of the two pulse wave signals are the same, the autocorrelation function of one of the pulse wave signals is solved to obtain the period T of the pulse wave signal.

[0035] Step 5: According to the period T of the pulse wave signal obtained in step ...

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