摘要
心电图广泛用于人体心脏电活动特性研究和心脏相关疾病的诊断。常规的接触式湿电极普遍使用导电膏,容易造成受试者的负担感和不适感,且存在皮肤过敏的风险,也不利于心电信号的长期监测。针对这个问题,该文设计了一种通过皮肤与电极感应层之间的容性耦合来获取心电信号的非接触电极,并搭建了基于ADS1299的生理信号采集系统,可实现无需导电膏、无需与皮肤直接接触的心电测量。在此基础上,该文全面研究了介于非接触电极和皮肤之间的绝缘层材料及厚度对心电信号的影响。研究结果表明,非接触电极可获取高质量的心电信号,且绝缘层参数对心电信号质量具有显著的影响:棉布材料作为绝缘层时,心电信号质量最好;绝缘层厚度越小,心电信号质量越好。该研究结果可为非接触电极在移动健康监护中的进一步广泛应用提供重要的实验基础和理论依据。
Electrocardiogram （ECG） has been widely used in studying the characteristics of human cardiac electronic activities and the diagnosis of cardiac related diseases. Conductive paste or gel was usually used in conventional wet contact electrode. However, it may cause burden, discomfort and skin allergies to the subject,which make it not suitable for long-term monitoring of ECG signals. To address this issue, this paper proposed a non-contact electrode which obtains the ECG signal through the capacitive coupling between skin and electrode sensing layer. Additionally, a physiological signal acquisition system based on ADS1299 was also built, so that a paste-free, non-contact ECG measurement could be achieved. Then, the effects of material and thickness of the insulating layer between non-contact electrode and skin on the ECG signal measurement were systemically investigated. The results show that the non-contact electrode can obtain high-quality ECG signals, and the insulation parameters have significant effect on ECG signal quality. Specifically, ECG signal quality achieves the best when cotton material was used as insulation layer. It was also observed that the smaller insulation thickness, the better ECG signal quality. The results of this study could provide important experimental and theoretical basis for further application of non-contact electrodes in mobile healthcare monitoring.
作者
刘雪玉
汪鑫
姜言冰
纪宁
刘盛平
李鹏
陈世雄
李光林
LIU Xueyu1,2 WANG Xin1 JIANG Yanbing1 JI Ning1 LIU Shengping2 LI Peng3 CHEN Shixiong1 LI Guanglin1 ＇(Shenzhen lnstitutes of Advanced Technology, Chinese Academy of Seiences, Shenzhen 518055, China） 2（ Institute of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China ） 3（ The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China)
出处
《集成技术》
2018年第2期47-56,共10页
Journal of Integration Technology
基金
深圳市海外高层次人才创新创业专项资金/孔雀技术创新项目(KQJSCX20160301141522
KQCX2015033117354152)
国家自然科学基金项目(91420301
61771462
61403367)
深圳市基础研究项目(JCYJ20150401150223634)
关键词
心电
非接触电极
绝缘层参数
移动监护
electrocardiogram
non-contact electrode
insulation parameters
mobile healthcare monitoring
