Multiplex humpulse wave signal acquisition system

Abstract

The invention discloses a multiplex human pulse wave signal acquisition system which comprises a piezoelectric type pulse transducer, an auxiliary fixing device, a many-way selection module in sequential connection, a preamplifier, a baseline correction module, a high-pass filtering and low-pass filtering module, a 50Hz-trapped wave module, a post-amplification module, an AD (analogue-to-digital) conversion control module, an upper computer and a power supply module, wherein the output of the piezoelectric type pulse transducer is connected with the many-way selection module, and the output of the AD conversion and control module is connected with the many-way selection module. The system disclosed by the invention solves the problem of location dependency of the pulse transducer, has good repeatability of measured data, can acquire and record the human pulse signals at many positions accurately, regularly and quantitatively, is stable in performance and convenient in use, causes no wound to the human body, is capable of continuous recording, provides an advantage for further research on pulse waves, and also provides an effective tool and method for research on pulse condition in traditional Chinese medicine.

Description

technical field [0001] The invention belongs to the technical field of biological signal acquisition, in particular to a human body multi-channel pulse wave signal acquisition system. Background technique [0002] In hospital clinical monitoring and daily health care for middle-aged and elderly people, pulse is a basic vital indicator, so pulse measurement is the most common extraction of vital signs. [0003] The pulse measurement known in the prior art can be divided into invasive pulse measurement and non-invasive pulse measurement method. The invasive pulse measurement method is more accurate and reliable, but its technical requirements are high and has a certain degree of trauma. The non-invasive pulse measurement method The pressure sensor is mainly used to extract the pulse of the prominent arterial part of the human body. After signal preprocessing and analog-to-digital conversion, the pulse wave is directly used for analysis, processing, feature extraction, and calc...

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Problems solved by technology

(2) Signals with low frequency but relatively concentrated energy, most of the frequency range is distributed in the low frequency band below 20HZ

(3) Complex and variable random signals

[0005] Various current pulse condition detection devices require the subject to be kept absolutely quiet and static, and a slight disturbance will have a serious impact on the pulse chart, thereby affecting the accuracy of detection, so it is difficult to popularize

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