2010/11/171 single-arm electrode for wireless ecg signal transmission system(part 3)
TRANSCRIPT
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Presenter: Hsuan-Han ChiangAdviser: Dr. Hung-Chi Yang
Date: 11.17.2010
Single-Arm Electrode for wireless ECG signal transmission
system(part 3)
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Results
3D Fields measurement
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Results
The SAR value distribution curve that simulate the antenna
in the tissue.
The SAR value distribution curve that immersed into the
concave of FR4 substrate
Average SAR=441 W/Kg Average SAR=377 W/Kg
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Results
ECG circuit & Transmitter Circuit
ECG circuit Transmitter Circuit
Zigbee Module
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Results
LabVIEW display interface
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Results
The FPC of electrode Electrode’s position on left upper arm
※ FPC-Flexible Print Circuit(軟性基板 )
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Results
ECG measure on left upper arm (a) from ECG circuit(b) signal process by MATLAB
ECG measure on right upper arm(a) from ECG circuit(b) signal process by MATLAB
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Results
ECG measure on left elbow(a) from ECG circuit(b) signal process by MATLAB
ECG measure on right elbow(a) from ECG circuit(b) signal process by MATLAB
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Results
ECG measure on left lower arm(a) from ECG circuit(b) signal process by MATLAB
ECG measure on right lower arm(a) from ECG circuit(b) signal process by MATLAB
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Conclusions
The electrode antenna have been accomp-lished in the ISM band .
ECG gelatin can separated the proposed antenna pattern from the human skin. Therefore, the SAR will be decreased.
It is possible to measure the ECG signal with the FPC of electrode attached to the arm .
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Future Work
Improve the resonant frequency Enhance the antenna radiation efficiency Improve ECG circuit Design of electrode antenna using Flexible Print
Circuit
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References[1] Angelopoulos E S, Anastopoulos A Z, Kaklamani D I, et al.”Circular and elliptical CPW-fed slot and microstrip-fed antennas for ultra-wideband applications”. IEEE Antennas and Wireless Propagation Letters, 2006, 5: 294–297.[2] H. C. Liu, T. S. Horng and N. G. Alexopoulous, “ Radiation of Printed Antennas with a Coplanar Waveguide Feed,“ IEEE Trans. Antennas Proporgat., vol. 10, pp. 1143-1148, 1995.[3] Evangelos S. Angelopoulos, Argiris Z. Anastopoulos, Dimitra I. Kaklamani,” Circular and Elliptical CPW-Fed Slot and Microstrip-Fed Antennas for Ultrawideband Applications”, IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 5, 2006[4] CHENG P. WEN,, “Coplanar Waveguide: A Surface Strip Transmission Line Suitable for Nonreciprocal Gyromagnetic Device Applications,” IEEE Transactions On Microwave Theory And Techniques, Vol. MTT-17, NO. 12, December 1969.[5] Shantz, H. G “Planar Elliptical Element Ultra-Wideband Dipole Antenna”, In:IEEE APS/URSI Conference,2002.[6] T.Maruyama‘,M.Makikawa’,’’ ECG Measurement Using Capacitive Coupling Electrodes for Man-Machine Emotional Communication ”, IEEE/ICME International Conference on Complex Medical Engineering ,2007.[7] http://library.med.utah.edu/kw/ecg/ecg_outline/Lesson1/lead_dia.html
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Thank you For your attention