【摘要】：心臟類疾病成為危害人體健康的主要疾病之一,它的診治是醫(yī)學(xué)領(lǐng)域的一個難題。心電圖(Electrocardiograph)能夠反映出心肌細胞生物電的變化,成為診斷心臟類病變最有力的依據(jù)。心電圖機作為診斷心臟性疾病的重要工具,當(dāng)前市場上已經(jīng)有很多相關(guān)的設(shè)備,動態(tài)便攜式心電Hoher價格較昂貴難以普及。針對心臟類疾病的突發(fā)性,研制一款功耗低、小型化、便攜式心電監(jiān)護產(chǎn)品迫在眉捷。本文設(shè)計了基于LM4F120H5QR的三導(dǎo)聯(lián)便攜式心電監(jiān)護系統(tǒng)。闡述了心電信號基礎(chǔ)理論,概述了心電信號采集和處理的方法。運用了RT-Thread實時操作系統(tǒng)、GPRS無線通信技術(shù)、基于MFC的軟件設(shè)計技術(shù)以及FAT32文件系統(tǒng),選用LM4F120H5QR處理器作為控制單元,采用ADI公司生產(chǎn)的24位AD芯片設(shè)計了心電采集單元,設(shè)計了基于LM4F120H5QR的心電信號處理系統(tǒng)和基于GPRS的遠程心電監(jiān)護系統(tǒng)。下位機由導(dǎo)聯(lián)接口、除顫保護、模數(shù)轉(zhuǎn)換、主控單元、SD卡存儲、按鍵及顯示、電源電路組成。本系統(tǒng)采用數(shù)字信號處理的方法進行濾波,通過軟件實現(xiàn)FIR低通濾波、零相移的IIR高通濾波和工頻陷波。與傳統(tǒng)采用硬件方法設(shè)計心電信號處理電路,相比較而言節(jié)省了成本并且很大程度上減小了電路板的體積和降低了功耗;基于LM4F120H5QR的ECG處理系統(tǒng)包含模數(shù)轉(zhuǎn)換、數(shù)據(jù)處理及存儲、LCD顯示及無線通信,主要實現(xiàn)對心電信號的模數(shù)轉(zhuǎn)換、濾波處理、存儲、顯示和傳輸;基于GPRS的遠程心電監(jiān)護系統(tǒng)主要采用MFC軟件編程方法通過UDP協(xié)議設(shè)計了PC端的心電監(jiān)護界面,醫(yī)生可遠程監(jiān)視患者的心電情況。此外,本系統(tǒng)還實現(xiàn)了在RT-Thread實時操作系統(tǒng)在LM4F120H5QR平臺上的移植,以便更好的開發(fā)和實現(xiàn)嵌入式系統(tǒng)的各種功能。本系統(tǒng)經(jīng)過仿真與樣機的綜合實驗,結(jié)果表明基于LM4F120H5QR的三導(dǎo)聯(lián)便攜式心電圖儀系統(tǒng)成功的實現(xiàn)對心電信號采集、存儲、顯示和遠程傳輸,具備簡單的分析處理能力。該系統(tǒng)具有低成本、小體積、低功耗、便攜式、遠程傳輸?shù)葍?yōu)點完全符合家庭心電監(jiān)護產(chǎn)品的需求。
[Abstract]:Heart disease is one of the major diseases that endanger human health, and its diagnosis and treatment is a difficult problem in medical field. Electrocardiograph (ECG) can reflect the changes of cardiomyocyte bioelectricity and become the most powerful basis for the diagnosis of cardiac diseases. As an important tool for the diagnosis of cardiac diseases, electrocardiograph (ECG) has many related devices in the market. Dynamic portable ECG Hoher is expensive and difficult to be popularized. For the sudden onset of heart disease, a low power consumption, miniaturization, portable ECG monitoring product is urgent. A three-lead portable ECG monitoring system based on LM 4 F 120 H 5QR is designed in this paper. The basic theory of ECG signal is introduced, and the method of ECG signal acquisition and processing is summarized. GPRS wireless communication technology is used in RT-Thread real-time operating system. Based on MFC software design technology and FAT32 file system, LM4F120H 5QR processor is selected as control unit, and 24 bits AD chip produced by ADI is used to design ECG acquisition unit. A ECG signal processing system based on LM4F120H5QR and a remote ECG monitoring system based on GPRS are designed. The lower computer consists of lead interface, defibrillation protection, A / D conversion, main control unit SD card storage, key and display, power circuit. In this system, digital signal processing is used to filter, Fir low-pass filter, zero-phase-shift IIR high-pass filter and power frequency notch are realized by software. Compared with the traditional hardware method, the design of ECG signal processing circuit saves the cost and greatly reduces the volume and power consumption of the circuit board, and the ECG processing system based on LM4F120H5QR includes A / D conversion. Data processing and storage LCD display and wireless communication, the main realization of ECG A / D conversion, filter processing, storage, display and transmission; The remote ECG monitoring system based on GPRS mainly uses MFC software programming method to design the ECG monitoring interface of PC side through UDP protocol. Doctors can remotely monitor the ECG condition of patients. In addition, the transplant of RT-Thread real-time operating system on LM4F120H5QR platform is realized in order to develop and realize various functions of embedded system. The simulation and prototype experiments show that the three-lead portable electrocardiograph system based on LM4F120H5QR has successfully realized the acquisition, storage, display and remote transmission of ECG signals, and has the ability of simple analysis and processing. The system has the advantages of low cost, small volume, low power consumption, portable, remote transmission and so on.
【學(xué)位授予單位】：西北師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH776

【相似文獻】

相關(guān)期刊論文 前10條

1 楊浩,蔡雄飛;便攜式心電圖儀的研究與設(shè)計[J];中國醫(yī)療器械雜志;2004年04期

2 曹柏榮;曹琪;;基于單片機的便攜式心電圖儀的研究[J];微計算機信息;2006年05期

3 李敏;;便攜式心電圖儀的設(shè)計[J];湖南工業(yè)職業(yè)技術(shù)學(xué)院學(xué)報;2009年04期

4 張昱;趙薇;;基于單片機的便攜式心電圖儀的設(shè)計[J];機械設(shè)計與制造;2009年12期

5 王彩杰;;心電信號放大與處理電路[J];集成電路應(yīng)用;1994年05期

6 鄧鵬;李剛;;基于MSP430低功耗便攜式心電圖儀設(shè)計[J];科技創(chuàng)新導(dǎo)報;2008年36期

7 李傳喜;齊林;;采用ADS1293的低功耗便攜式心電圖儀硬件設(shè)計[J];電子產(chǎn)品世界;2013年06期

8 陳月明;;便攜式心電圖儀器的設(shè)計[J];醫(yī)學(xué)信息(中旬刊);2011年08期

9 武利珍;張文超;程春榮;;基于STM32的便攜式心電圖儀設(shè)計[J];電子器件;2009年05期

10 朱帆三;;借助于便攜式心電圖儀在心前區(qū)采用20個電極點所描述的ST段偏差的分布[J];國外醫(yī)學(xué).生物醫(yī)學(xué)工程分冊;1991年02期

相關(guān)重要報紙文章 前1條

1 ;日本歐姆龍將推出家用便攜式心電圖儀[N];醫(yī)藥經(jīng)濟報;2004年

相關(guān)碩士學(xué)位論文 前4條

1 倪曉勇;基于LM4F120H5QR的三導(dǎo)聯(lián)便攜式心電圖儀系統(tǒng)設(shè)計[D];西北師范大學(xué);2015年

2 宋健;便攜式心電圖儀存儲與控制模塊設(shè)計與實現(xiàn)[D];北京交通大學(xué);2008年

3 龔雪容;基于M·CORE微控制器的便攜式心電圖儀的硬件設(shè)計與實現(xiàn)[D];中國人民解放軍信息工程大學(xué);2003年

4 武利珍;基于STM32的便攜式心電圖儀的設(shè)計與實現(xiàn)[D];杭州電子科技大學(xué);2009年

，

本文編號：2127130