【摘要】：基于家庭使用環(huán)境的便攜式醫(yī)療監(jiān)護(hù)設(shè)備已經(jīng)成為人們預(yù)防疾病、監(jiān)護(hù)突發(fā)性疾病必不可缺的重要設(shè)備。傳統(tǒng)的醫(yī)療監(jiān)護(hù)儀器存在諸多局限性比如成本高、體積大、功耗大、操作復(fù)雜使其不能適用于應(yīng)具備無(wú)線化、個(gè)性化等特點(diǎn)的家庭醫(yī)療監(jiān)護(hù)領(lǐng)域。當(dāng)前基于無(wú)線傳感網(wǎng)絡(luò)的多通路醫(yī)療監(jiān)護(hù)系統(tǒng)還處于實(shí)驗(yàn)室的研究階段,市場(chǎng)上還沒(méi)有成型的產(chǎn)品。 無(wú)線傳感器網(wǎng)絡(luò)是當(dāng)前國(guó)內(nèi)外工程領(lǐng)域的研究熱點(diǎn),面向人體生理健康監(jiān)測(cè)的無(wú)線傳感器網(wǎng)絡(luò)是其中的一個(gè)重要分支,開(kāi)發(fā)出一種針對(duì)多通路不同生理信號(hào)的同步采集方案是至關(guān)重要的。多通路的生理信號(hào)同步采集及無(wú)線傳輸系統(tǒng)應(yīng)具備高速數(shù)據(jù)傳輸,這樣才能使得到的采樣數(shù)據(jù)具有分析價(jià)值。本課題針對(duì)以上兩點(diǎn)實(shí)際需求展開(kāi)研究工作并設(shè)計(jì)了一套低功耗的心電脈搏信號(hào)的同步采集系統(tǒng)。該系統(tǒng)由兩個(gè)各自獨(dú)立的心電和脈搏傳感器節(jié)點(diǎn)以及一部基于Android系統(tǒng)的智能手機(jī)構(gòu)成。 該系統(tǒng)具有低成本、低功耗、便攜式、個(gè)性化等特點(diǎn),采用同步采集方式可以在對(duì)獨(dú)立的心電、脈搏信號(hào)分析之后計(jì)算出脈搏波的傳導(dǎo)時(shí)間再結(jié)合基于個(gè)人的特定生理參數(shù)來(lái)估測(cè)人體血壓,從而實(shí)現(xiàn)無(wú)袖帶的連續(xù)血壓測(cè)量減少了傳統(tǒng)血壓測(cè)量過(guò)程中由于袖帶所引起的痛苦。 本系統(tǒng)采用基于Android操作系統(tǒng)的Java語(yǔ)言進(jìn)行多線程應(yīng)用程序開(kāi)發(fā),實(shí)現(xiàn)對(duì)兩個(gè)獨(dú)立傳感器節(jié)點(diǎn)的同步采集控制、心電和脈搏波信號(hào)特征點(diǎn)提取、估算血壓。 本文研究了一種較簡(jiǎn)單的同步采集方式采樣頻率補(bǔ)償與采樣數(shù)據(jù)補(bǔ)償相結(jié)合的方法來(lái)控制兩個(gè)獨(dú)立的傳感器節(jié)點(diǎn)同步采集心電、脈搏信號(hào),實(shí)現(xiàn)兩個(gè)傳感器節(jié)點(diǎn)信號(hào)采樣的同步精度達(dá)到97%。經(jīng)過(guò)實(shí)驗(yàn)測(cè)試,本系統(tǒng)對(duì)于心率和脈率的計(jì)算準(zhǔn)確率分別達(dá)到99.06%和98.79%。對(duì)三名測(cè)試對(duì)象進(jìn)行血壓建模測(cè)試分析得到,系統(tǒng)對(duì)于血壓的估算結(jié)果均符合AAMI推薦的差不超過(guò)5±8mmHg的標(biāo)準(zhǔn)。
[Abstract]:Portable medical monitoring equipment based on home use environment has become an essential equipment for the prevention of diseases and the monitoring of sudden diseases. Traditional medical monitoring instruments have many limitations, such as high cost, large volume, large power consumption, complex operation, which can not be used in the field of family medical monitoring, which should have the characteristics of wireless, personalized and so on. At present, the multi-channel medical monitoring system based on wireless sensor network is still in the research stage of laboratory, and there are no products in the market. Wireless sensor network (WSN) is a hot topic in the field of engineering at home and abroad, and the wireless sensor network (WSN) for human physiological health monitoring is an important branch of WSN. It is very important to develop a synchronous acquisition scheme for different physiological signals. The synchronous acquisition and wireless transmission of multi-channel physiological signals should have high speed data transmission, so that the sampled data can be analyzed. In this paper, a low power consumption synchronous ECG pulse signal acquisition system is designed. The system consists of two independent ECG and pulse sensor nodes and a smart phone based on Android system. The system has the characteristics of low cost, low power consumption, portable, personalized and so on. After the pulse signal is analyzed, the pulse wave conduction time is calculated, and then the blood pressure is estimated based on the specific physiological parameters of the individual. Thus the continuous blood pressure measurement with sleeveless band reduces the pain caused by the cuff in the traditional blood pressure measurement process. This system uses Java language based on Android operating system to develop multi-thread application program, realizes synchronous acquisition and control of two independent sensor nodes, extracts characteristic points of ECG and pulse wave signals, and estimates blood pressure. In this paper, a simple synchronous acquisition method, sampling frequency compensation and sampling data compensation, is studied to control the synchronous acquisition of ECG and pulse signals by two independent sensor nodes. The synchronization precision of signal sampling of two sensor nodes is 97%. The accuracy of heart rate and pulse rate are 99.06% and 98.79%, respectively. The results of blood pressure modeling test for three subjects showed that the estimated blood pressure of the system was in accordance with the standard of 5 鹵8mmHg recommended by AAMI.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP274.2;R197.39

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