Study Of Blood Viscosity Noninvasive Embedded System

The blood flow volume pulse wave contains a large number ofcardiovascular information, pulse wave form characteristics and hemodynamicparameters are two closely related factors. Hemodynamic parameters can directlyreflect the function of cardiovascular system, so we can monitor cardiovascularchanges by hemodynamic parameters. Blood viscosity is one of the most importantcardiovascular function parameters. Blood viscosity rising cause blood flow slow,microcirculation function occur obstacles, tissues and organs anoxic, eventuallyleading cardiovascular circulatory system diseases. Cardiovascular hemodynamicparameters obtained by pulse waveform detecting play an important role in thecardiovascular disease detection, treatment and monitoring process. Pulse waveformautomatic acquisition and analysis system will have a wide application. Embeddedsystem design has a great value in sports, body building and family medical care.Blood viscosity non-invasive detecting products mainly using pulse wave testingtechnology to calculate the blood viscosity, previous pulse waveform acquisition andanalysis system generally required human intervention. Pulse wa veform availabilitywas determined by operator. The operator observed the waveform to decide whenstopping detecting. It had a low automation degree and a large impact on humanfactors. In order to solve these problems, a pulse waveform automatic acquisition andanalysis system was designed to achieve the goal of pulse waveform automaticacquisition, automatic sampling, automatic analysis, anthropogenic influencereduction, test speed improvement and operation complexity reduction.Hemodynamic parameters of subjects can be quickly, conveniently and accuratelymeasured. It can provide an appropriate and effective technical mean for clinicalexamination and treatment, and lay groundwork for further scientific research of pulsewaveform.This design based on cardiovascular hemodynamic non-invasive testing theory,design a new blood flow sensor, make a collection and processing hardware circuit,using a new simple and efficient waveform extraction algorithm and pulse wave shapequality evaluation method, improve the quality and accuracy of the waveform detect,reduce human intervention, and extend the power supply by using the intelligentpower management technology, save battery power, work longer. In this design wemake full use of digital signal processor high processing speed and low power consumption characteristics, make a comprehensive functions, structure compact,robust of blood viscosity of non-invasive detecting equipment. This device canachieve amplitude of blood flow automatic and baseline adjustment, waveformquality evaluation, waveform characteristics effectiveness automatic extraction, anduse a oversampling technology and wireless data transmission technique realizeautomation and intelligent. The design of this paper is a great use in cardiovasculardisease non-invasive monitoring and give hemodynamic evaluation parameters forhemodynamic treatment, objective evaluation opinions and monitoring technology.