Non-contact ECG sensing employing gradiometer electrodes.
Non-contact ECG sensing employing gradiometer electrodes.
复制标题
DOI：
10.1109/tbme.2012.2219531
复制
发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Bocko MF
中科院分区：
文献类型：
--
作者：
Peng G;Bocko MF
非接触式电容心电图（ECG）测量因ECG电极与受试者之间的相对运动而产生的运动伪影而变得复杂。为了补偿这种运动，我们建议采用一阶和二阶梯度计电极设计。开发了一种基于MATLAB的仿真工具，用于评估人体受试者的不同电极配置和放置，以指导电极设计的改进。对各种原型设计的灵敏度、运动伪影消除和共模抑制进行了人体实验测量。二阶梯度计电极设计似乎给出了如通过信噪比加失真比测量的最佳性能。最后，将两种梯度计设计与标准ECG记录方法进行了比较，并采用开源搏动检测算法显示出小于1%的搏动检测失配。
Noncontact, capacitive electrocardiogram (ECG) measurements are complicated by motion artifacts from the relative movement between the ECG electrodes and the subject. To compensate for such motion we propose to employ first and second order gradiometer electrode designs. A MATLAB-based simulation tool to enable assessment of different electrode configurations and placements on human subjects has been developed to guide the refinement of electrode designs. Experimental measurements of the sensitivity, motion artifact cancellation, and common mode rejection for various prototype designs were conducted with human subjects. Second order gradiometer electrode designs appear to give the best performance as measured by signal to noise plus distortion ratio. Finally, both gradiometer designs were compared with standard ECG recording methods and showed less than 1% beat detection mismatch employing an open source beat detection algorithm.