采用前馈CMRR增强方法的双电极心电测量电路

2017 IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2017-04-01 DOI:10.1109/CCECE.2017.7946612

E. Jedari, R. Rashidzadeh, M. Mirhassani, M. Ahmadi

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引用次数: 8

摘要

心电图(ECG)信号的记录目前至少使用三个电极，两个电极用于差分测量，第三个电极用于增加共模抑制比(CMRR)。提出了一种提高心电模拟前端CMRR的方法。结果表明，采用前馈方法可以显著提高心电系统的CMRR，而不需要第三电极。当信号路径匹配时，所实现的心电电路的性能优于传统的右腿驱动系统。该方案还可以与右腿驱动电路配合使用，进一步提高CMRR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Two-electrode ECG measurement circuit using a feed forward CMRR enhancement method

Electrocardiography (ECG) signal is currently recorded using minimum three electrodes, two electrodes for differential measurements and the third one to increase the Common Mode Rejection Ratio (CMRR). This paper presents a method to increase the CMRR of the analog front-end of ECG circuits. It is shown that the CMRR of ECG systems can be improved significantly without the need to the third electrode using a feed-forward method. It is also shown that the implemented ECG circuit can outperform the conventional right-leg driven systems when the signal paths are matched. The presented scheme can also be used with the right-leg driven circuit to further improve the CMRR.

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来源期刊

2017 IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE)

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