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Research of Portable Ecg Monitor Based on USB Serial Bus

Author: ChenWeiJie
Tutor: GuoXin
School: Hebei University of Technology
Course: Control Science and Engineering
Keywords: portable ECG monitor USB C8051F340 SL811HS
CLC: TH772.2
Type: Master's thesis
Year: 2011
Downloads: 67
Quote: 0
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Abstract


Holter can record human ECG while people is spending their daily life,aiming atearly detection of the hidden signs of heart disorder and prompt first aid to heartdiseases. Moreover, the dynamic ECG is the necessary complement to the routineelectrocardiogram and the important basis for the diagnosis of heart disease. So thedevelopment prospect of Holter will be very good.In addition, today USB has been used extensively in the PC realm for itsexcellent feature, such as small, plug and play, flexible operations and so on. But inthe built-in system, its function is limited because of the USB equipments can’t workindependently without the the PC machine. But with the appearing of powerful USBhost Interface chip, this problem will be solved quickly. So combining the USBinterface technology with Holter is the inexorable trend in the future.This thesis introduces a portable ECG monitoring system bases on the USBserial bus. This system uses Microprocessor C8051F340 as its controlling core,SL811HS as USB host Interface chip. Based on this hardware, it designs USB hostspecification stack, specification frame about USB Mass Storage and FAT file systemso that this system can store the collected ECG signals in U-Disk by the USB maininterface without delay. In addition, the ECG monitor can also transmit the real-timeelectrocardiosignal to the computer by the USB bus. And the ECG signal collectioncircuit of this system embodies several characteristics including high Input impedance,free choice of lead, full filter function and low circuit loss, all of which are quitesuitable for portable ECG monitoring system.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Medical and health devices > Medical electrical machinery > Electronic equipment
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