APPLICATION OF TIME DOMAIN REFLECTOMETRY FOR CHARACTERIZATION OF HUMAN SKIN


In this paper, we report on time domain reflectometry (TDR) and transmission (TDT) measurement and characterization of skin using biosignal electrodes, normally used for monitoring of EMG biosignals. Basic principles of TDR and TDT methods are presented for various skin equivalent circuit configurations. Using the methods, the reflected and transmitted waves were measured at three different parts of the human body skin. The measured differences reveal differences in transient phenomena related to charging-discharging cells in a skin and underneath layers.

Keywords:
Time domain reflectometry, reflection, transmission, biosignal electrodes, transmission line


Autoři: Ľubomír Sládek 1;  Alexander Šatka 1
Působiště autorů: Slovak University of Technology, Faculty of Electrical Engineering and Information, Institute of Electronics and Photonics, Ilkovičova 3, 812 19, Bratislava, Slovak Republic 1
Vyšlo v časopise: Lékař a technika - Clinician and Technology No. 2, 2012, 42, 23-26
Kategorie: Conference YBERC 2012

Souhrn

In this paper, we report on time domain reflectometry (TDR) and transmission (TDT) measurement and characterization of skin using biosignal electrodes, normally used for monitoring of EMG biosignals. Basic principles of TDR and TDT methods are presented for various skin equivalent circuit configurations. Using the methods, the reflected and transmitted waves were measured at three different parts of the human body skin. The measured differences reveal differences in transient phenomena related to charging-discharging cells in a skin and underneath layers.

Keywords:
Time domain reflectometry, reflection, transmission, biosignal electrodes, transmission line


Zdroje

[1] Strickland, J., A., Zimmerman, H., A., Long, G., Frye, G., Time-domain reflectometry measurements, Tektronix, Inc., 1970

[2] “Time Domain Reflectometry Theory”, Application Note 1304-2, Agilent Technologies, Inc., May 10, 2006, 5966-4855E

[3] “Signal Integrity Analysis Series”, Application Note, Agilent Technologies, Inc., February 21, 2007, 5989-5763EN

[4] Andrews, J., R., Step Response and “S” Parameter Measurements in the Time Domain, Picosecond Pulse Labs, Application Note AN-3044, Revision 1, 5/89, May, 1989 [5] Vavrinský, E., Stopjaková, V., Brezina, I., Majer, L., Soláriková, P., Tvarožek, V., Electro-Optical Monitoring and Analysis of Human Cognitive Processes. In: Semiconductor Technologies. - Vukovar : InTech, 2010. ISBN 978-953-307- 080-3

[6] Vavrinský, E., Daříček, M., Donoval, M., Rendek, K., Horínek, F., Horniak, M., Donoval, D., Design of EMG Wireless Sensor System. In: Applied Electronics 2011: International Conference on Applied Electronics. Pilsen, 7-8 September 2011. Pilsen, University of West Bohemia, 2011. ISBN 978-80-7043-987-6 [7] Horínek, F. - Daříček, M. - Horniak, M. - Donoval, M. - Vavrinský, E. - Rendek, K. - Donoval, D.: Modulárny systém pre rýchlu diagnostiku ochorení a zvyšovanie kvality zdravotnej starostlivosti. In: EE Journal: Journal of Electrical Engineering and Energy. Vol. 16, p. 165-167, 2010. ISSN 1335-2547

Štítky
Biomedicína
Článek Editorial

Článok vyšiel v časopise

Lékař a technika

Číslo 2

2012 Číslo 2

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