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研究生:楊晴媄
研究生(外文):CHING-MEI,YANG
論文名稱:高解析度心電圖資料擷取分析
論文名稱(外文):The Acquisition and Analysis of High Resolution ECG Data
指導教授:蔡正倫蔡正倫引用關係
指導教授(外文):CHENG-LUN TSAI
學位類別:碩士
校院名稱:中原大學
系所名稱:醫學工程學系
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2000
畢業學年度:88
語文別:中文
論文頁數:39
中文關鍵詞:心電圖類比數位轉換器右腳驅動電路
外文關鍵詞:electrocardiographanalog-to-digital converterdriven-right-leg circuit
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本研究的目的是使用高解析度的類比數位轉換器與數位信號處理技術,建構一心電訊號擷取分析系統,以減少類比元件的使用,簡化線路及硬體成本,並提高訊號處理的穩定性。擷取系統將標準雙極肢導各點的體表電位訊號使用電極分別偵測放大64倍後,經16-bits高解析度的類比數位轉換器擷取進入電腦,後以數位訊號處理方式,計算差動訊號,重建出標準的心電訊號,再經0.05~40Hz的數位帶通濾波器處理,以消除雜訊。
前級放大線路是依高解析度類比數位轉換器的規格,訂出前極放大器的放大倍率,研究中同時比較了緩衝器型、傳統型、與轉導放大器型等右腳驅動電路對雜訊的拒斥效果,結果顯示傳統型右腳驅動電路的訊號雜訊比最低,約為64 dB。並且對所得的心電訊號做頻譜分析。本研究初步證實此心電訊號擷取架構的可行性,隨著高解析度類比數位轉換器與低雜訊前級放大器的發展,將有助於此心電訊號擷取法的推廣使用。

The purpose of this study is to use a high-resolution analog-to-digital convert and digital signal processing technique to build an electrocardiograph system. This reduced the usage of analog devices and total cost. Digital signal processing in software is also more reliable than the analog circuits. Body potential detected by each electrode was amplified with a gain of 64, then, converted into a digital signal by a 16-bits high-resolution analog-to-digital converter. ECG signal was recovered in computer by calculation. This signal was also filtered by digital filter with bandwidth from 0.05Hz to 40Hz to reduce noise.
The gain of preamplifier was determined based on the resolution of the analog-to-digital converter and the specification of ECG signal. Different driven-right-leg circuit, including simple buffer type, standard type, and transconductor type were also compared. The standard type of driven-right-leg circuit still has the best performance in common mode noise rejection. Spectral analysis of the calculated ECG signal was also carried out in this study. It is shown in this study that the high resolution ECG acquisition is a working structure. With the recent advance in high resolution analog-to-digital converter and low noise preamplifier, such a structure will have a promising future.

中文摘要………………………………………………………………….i
英文摘要…………………………………………………………………ii
謝誌…………………………………………………………………….iii
目錄……………………………………………………………………..iv
圖索引……………………………………………………………………v
表索引…………………………………………………………………..vi
第一章緒論………..……………………………………………….1
1-1研究目的………………………….…………………………1
1-2研究動機…………………………………………………….1
1-3相關文獻回顧……………………………………………….1
第二章 系統設計規格………………………………………………….3
2-1 放大倍率與轉換器解析度的相互關係……………...….3
2-2 CMRR的影響……..………..………………………………4
第三章 硬體架構……………………………………………………….6
3-1 硬體架構………………..……………...……………...6
第四章 右腳驅動電路的重要性……………………………………….9
4-1模擬電路架構…………...……………………..……..…9
4-2電路模擬結果……………………………………………...10
第五章 右腳驅動電路的重要性……………………………………….18
5-1取樣間隔的考量……………...…………..……..……..18
第六章 硬體量測結果………………….…………………….……….23
6-1量測方式與結果………...…………………..……...….23
第七章 討論與未來展望……………….……………………………..37
參考文獻……….……………….……………………………………..38

1.B.B. Winter and J.G. Webster, “Driven-Right-Leg Circuit
Design, ” IEEE Trans. Biomed. Eng., vol. BME-30, NO. 1, pp.
62-66, Jan. 1983.
2.B. B. Winter,and J. G. Webster, “Reduction of Interference
Due to Commom Mode Voltage in Biopotential Amplifiers, ”.
Biomed. Eng., vol. BME-30, NO. 1, pp. 58-61, Jan. 1983.
3.M. M. ROHDE, S. L. Bement, “ECG Boy:Low-Cost Medical
Instrumentation Using Mass-Production, Hand-Held
Entertainment Computers, ” Bio. Instrumentation &
Technology.pp. 497-508, Oct. 1998.
4.Edward A. Clancy, “A PC-based workstation for real-time ac-
quisition, processing, and display of electromyogram
signals, ”Bio. Instrumentation & Technology, pp. 123-134,
1998.
5.F. Lovely, B.Sc, Ph.D., “A Low-Power, High Performance
Electrode Amplifier for Clinical Use in Myoelectric Control
Systems, ”Journal of Clinical Engineering., Vol.11, No. 1,
pp.33- 37, Jan. 1986.
6.James C. Huhta and John G. Webster, “60-Hz Interference in
Elec-trocardiography, ” IEEE Transactions on Biomedical
Eng., Vol.BME-20, No 2, pp 91-101, March 1973.
7.Nitish V. Thakor and John G. Webster, “Ground-Free ECG Recor-
ding with Two Electrodes, ” IEEE Transactions on
Biomedical Eng., Vol. BME-27, No 12, pp699-704, December 1980
8.John G. Webster, Medical Instrumentation Application and
Design, Third Edition, 1998.
9.James H. Mcclellan and C. Sidney Burrus, Computer-Based
Exercises for Signal Processing Using Matlab 5,1998.
10.H. W. SMIT, K. VERTON, and C.A. GRIMBERGEN, “A Low-
Cost Multichannel Preamplifier for Physiological Signals, ”
IEEE Transactions on Biomedical Eng., Vol. BME-34, No 4,
pp307-310, April 1987.
11.A. C. Metting van Rijn, A. Peper, and C.A. Grimbergen, “The
Isolation Mode Rejection Ratio in Bioelectric Amplifiers, ”
IEEE Transactions on Biomedical Eng., Vol. 38, No 11, pp1154-
1157, November 1991.
12.M. L. AHLSTROM and W. J. TOMPKINS, “Digital Filters for
Real-Time ECG Signal Processing Using Microprocessors, ”
IEEE Transactions on Biomedical Eng., Vol. BME-32, No 9,
Pp708-713, September 1985.
13.Spinelli and Martinez, “A Transconductance Driven-Right-Leg
Circuit, “IEEE Transactions on Biomedical Eng., Vol.46, No 12,
pp1466-1470, December 1999.

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