Technical Research of Non-contact Electrocardiogram Based on Capacitive Coupling_Journal of Biomedical Engineering

Authors：

GAOShan , LIYongqin , WEILiang , XIONGJie , LIAODacheng ,  CHENBihua

School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China;

Corresponding author：

CHENBihua, Email: windice1201@sina.com

Keywords：

non-contact; electrocardiogram monitoring; capacitive coupling; R-wave detection

DOI：

10.7507/1001-5515.20150101

Video：

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Abstract Full text Figures/Tables Video References Cited by

Based on the capacitance coupling principle, we studied a capacitive way of non-contact electrocardiogram (ECG) monitoring, making it possible to obtain ECG on the condition that a patient is habilimented. Conductive fabric with a good electrical conductivity was used as electrodes. The electrodes fixed on a bed sheet is presented in this paper. A capacitance comes into being as long as the body gets close to the surface of electrode, sandwiching the cotton cushion, which acts as dielectric. The surface potential generated by heart is coupled to electrodes through the capacitance. After being processed, the signal is suitable for monitoring. The test results show that 93.5% of R wave could be detected for 9 volunteers and ECG with good signal quality could be acquired for 2 burnt patients. Non-contact ECG is harmless to skin, and it has advantages for those patients to whom stickup electrodes are not suitable. On the other hand, it is convenient to use and good for permanent monitoring.

Citation： GAOShan, LIYongqin, WEILiang, XIONGJie, LIAODacheng, CHENBihua. Technical Research of Non-contact Electrocardiogram Based on Capacitive Coupling. Journal of Biomedical Engineering, 2015, 32(3): 553-557. doi: 10.7507/1001-5515.20150101 Copy

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1. LEE K M, LEE S M, SIM K S, et al. Noise reduction for non-contact electrocardiogram measurement in daily life[C]//The 36th Annual Computers in Cardiology Conference. Park City:2009:493-496.
2. SULLIVAN T J, DEISS S R, CAUWENBERGHS G. A low-noise, non-contact EEG/ECG sensor[C]//Biomedical Circuits and Systems Conference. Montreal:2007:154-157.
3. 黎鳌, 杨宗城.黎鳌烧伤学[M].上海:上海科学技术出版社, 2001:1-828.
4. LOPEZ A, RICHARDSON P C. Capacitive electrocardiographic and bioelectric electrodes[J]. IEEE Trans Biomed Eng, 1969, 16(1):99.
5. TADAYUKI M, KAZUHIRO I, ESASHI M. A barium-titanate-ceramics capacitive-type EEG electrode[J]. IEEE Trans Biomed Eng, 1973, 20(4):299-300.
6. PARK P, CHOU P H, BAI Y, et al. An ultra-wearable, wireless, low power ECG monitoring system[C]//Biomedical Circuits and Systems Conference. London:2006:241-244.
7. CHIY M, CAUWENBERGHS G. Wireless non-contact EEG/ECG electrodes for body sensor networks[C]//2010 International Conference on Body Sensor Networks. Singapore:2010:297-301.
8. LEONHARDT S, ALEKSANDROWICZ A. Non-contact ECG monitoring for automotive application[C]//The 5th International Summer School and Symposium on Medical Devices and Biosensors. Hong Kong:2008:183-185.
9. ALCKSANDROWICZ A, LEONHARDT S. Wireless and non-contact ECG measurement system-the Aachen Smart Chair[J]. Acta Polytechnica, 2007, 2:68-71.
10. CHI Y M, JUNG T P, CAUWENBERGHS G. Dry-contact and noncontact biopotential electrodes:methodological review[J]. IEEE Reviews Biomed Eng, 2010, 3:106-119.
11. EKSTROM M. Small wireless ECG with Bluetooth communication to a PDA[D]. Sweden:Mälardalen University, 2006.
12. MATTHEWS R, MCDONALD N J, FRIDMAN I, et al. The invisible electrode-zero prep time, ultra low capacitive sensing[C]//The 11th International Conference on Human-Computer Interaction. Las Vegas:2005:22-27.
13. 李运华, 刘宝华, 户鹏飞, 等.一种非接触心电测量方法的研究[J].传感器与微系统, 2013, 32(1):47-49.
14. CHAMADIYA B, MANKODIYA K, WAGNER M, et al. Non-contact, non-obtrusive electrocardiography in clinical environments[C]//The 5th International Conference on Pervasive Computing Technologies for Healthcare. Dublin:2011:101-106.
15. 余奎, 林国庆, 耿俊佑, 等.现代医学监护仪器的应用特点及发展趋势[J].医疗设备信息, 2003, 18(1):41-43.

Journal of Biomedical Engineering

Technical Research of Non-contact Electrocardiogram Based on Capacitive Coupling

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