基于电容耦合的非接触式心电技术的实验研究  

Non-contact ECG monitoring study based on capacitive coupling

作　　者：王文涛[1] 徐浩然[1] 全弘宇 冯自立[1] 廖新华[1] 

机构地区：[1]第三军医大学生物医学工程学院,重庆400038

出　　处：《医疗卫生装备》2015年第3期21-23,共3页Chinese Medical Equipment Journal

摘　　要：目的 :研究一种非接触式心电监测方法,使电极不需要与人体直接接触就可以稳定地获取心电信号。方法 :选取导电性能良好的导电纤维为材料制作电极,利用身体和电极平板相互靠近形成的电容将心电耦合到导电纤维上,通过前置放大、降噪、滤波、后级放大等处理后得到心电信号。结果:使用该系统对志愿者进行测试,能清楚地看到R波和T波,而且整体波形与心电图一致。结论:利用电容耦合原理可以非接触地获得心电信号,且对皮肤无损伤,适用于不方便在体表粘贴电极的患者。Objective To study a mode of non-contact ECG monitoring to eliminate the need to stick electrodes on the patients＇ skin to obtain a steady ECG. Methods Conductive fabric with high electrical conductivity was used for electrodes. The capacitance generating due to the body getting close to the electrode coupled ECG to the conductive fabric,and ECG signals came into being after preamplification, noise reduction, filtration, postamplificatoin and etc. Results Trials proved that R wave and T wave were distinct with the waveform consistent with ECG. Conclusion Capacitive coupling can be used to acquire non-contact ECG signals with no injury to the skin.

关 键 词：非接触式 电容耦合 心电信号 

分 类 号：TH772[机械工程—仪器科学与技术]