| 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.
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