【作者】 张文昌；

【导师】 叶树明； 陈杭；

【作者基本信息】 浙江大学 ， 生物物理学， 2007， 硕士

【摘要】 便携式心电分析仪研究对心血管疾病的早期预测及家庭医疗保健具有十分重要的意义，一直是生物医学工程领域的研究热点。目前，随着电子技术、通信技术和软件技术的发展，心电分析仪在体积、系统功耗、数据存储、数据传输等方面有了长足的发展，但是现在市场上的心电监护仪和Holter类仪器由于价格、缺乏自动分析的能力等原因限制了其在家庭医疗保健中的应用，便携式心电分析仪的研究将会解决此类问题。论文在分析了国内外心电分析仪发展现状和趋势的基础上，自主开发了一套低功耗的心电信号采集及分析系统，实现了心电信号的长时间采集及实时检测，多次实验表明，该心电分析仪具有很好的低功耗、实时性的特点。全文共分五章。第一章在阐述了当今心电分析仪的研究背景、国内外现状和发展趋势，提出了本论文的研究内容及研究的意义。第二章介绍了心电分析仪整体设计方案，并对系统的功耗进行了详细的分析，提出了本系统中应用的硬件和软件低功耗设计策略，最后介绍了低功耗微处理器、数据存储介质的选型并详细介绍了所选微处理器的内部资源。第三章在系统低功耗研究的基础之上，分别介绍了心电信号采集系统和分析系统的电子电路设计，包括电源、心电信号的前置放大和滤波、数据采集、通信、数据存储和显示模块。第四章详细介绍了心电信号采集模块和分析模块的软件设计，并详细介绍了嵌入式操作系统μC／OS-Ⅱ在该心电分析仪中的应用情况。第五章给出了论文实验结果，对论文进行了总结，指出了需要进一步的研究方向，并对未来做了展望。更多还原

【Abstract】 The research of portable ECG analyzer is of great significance to the prediction of cardiovascular diseases and home healthcare, it is a hot research filed in biomedical engineering for a long time. Now, with the development of electronics, telecommunication and software, the ECG analyzer has great changes in its volume, system power, data cache, data transmission. Now because of the price and lack of auto analyzing ability, ECG monitors and Holter on sale have some disadvantages in home healthcare. The research of portable ECG analyzer will resolve this problem.Based on the study of the situation and future trend of ECG analyzer, we design a low-power ECG data sampling and analyzing system. It can sample for a long time and has the ability to detect QRS in real time. Many experiments demonstrate that the system has low-power and real time analyzing characteristics.The thesis has five chapters.In chapter one, based on the research background of ECG analyzer, its now situation and future development trend, we give out the content and significance of our research.In chapter two, firstly, we introduce the whole system design blue-print. Secondly, we analyze the system power in detail and give out a lot of hardware and software measures to lower the system power. Lastly, we introduce the low-power microprocessor and data cache selection and the resources of the MCU we select.In chapter three, based on the research of the system power, we introduce the electrical circuit design of ECG data sampling system and the data analyzing system independently, including the power, ECG signal amplify and filter, sample, communication, data cache and display modules.In chapter four, we study the software of ECG sampling system and data analyzing system. Then we study the transplantation of the embedded operating systemμC/OS-Ⅱin the analyzing system.In chapter five, firstly, we give out the experimental results. Secondly, we summarize the research work and the prospects of future study.更多还原