Electric-Field Distribution Estimation in a Train Carriage due to Cellular Radios in order to Assess the Implantable Cardiac Pacemaker EMI in Semi-Echoic Environments

Takashi HIKAGE; Toshio NOJIMA; Soichi WATANABE; Takashi SHINOZUKA

doi:10.1093/ietcom/e88-b.8.3281

Electric-Field Distribution Estimation in a Train Carriage due to Cellular Radios in order to Assess the Implantable Cardiac Pacemaker EMI in Semi-Echoic Environments

Takashi HIKAGE, Toshio NOJIMA, Soichi WATANABE, Takashi SHINOZUKA

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The electromagnetic field (EMF) distributions created inside a train carriage by the cellular radios of the passengers are analyzed and the impact their electromagnetic interference (EMI) on the implantable cardiac pacemakers is evaluated based upon the analysis results. Both computer simulations and experiments using 800 MHz and 2 GHz transmitters in an actual train carriage confirm that excessively high EMF, high enough to affect the normal functions of the pacemaker, does not occur inside the carriage provided the safe distance of 22 cm specified for pacemaker users is kept. A simplified histogram estimation method for electric field strength is newly developed to deal with the complicated EMF distributions. It allows the EMI risk to pacemakers by cellular radio transmission to be quantitatively evaluated. Methodologies are described first. Typical results of FDTD analysis and actual measurement data are then shown. Finally, considerations and conclusions are made.

Publication: IEICE TRANSACTIONS on Communications Vol.E88-B No.8 pp.3281-3286

Publication Date: 2005/08/01

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DOI: 10.1093/ietcom/e88-b.8.3281

Type of Manuscript: Special Section PAPER (Special Section of 2004 International Symposium on Electromagnetic Compatibility)

Category: Biological Effects

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Takashi HIKAGE, Toshio NOJIMA, Soichi WATANABE, Takashi SHINOZUKA, "Electric-Field Distribution Estimation in a Train Carriage due to Cellular Radios in order to Assess the Implantable Cardiac Pacemaker EMI in Semi-Echoic Environments" in IEICE TRANSACTIONS on Communications, vol. E88-B, no. 8, pp. 3281-3286, August 2005, doi: 10.1093/ietcom/e88-b.8.3281.
Abstract: The electromagnetic field (EMF) distributions created inside a train carriage by the cellular radios of the passengers are analyzed and the impact their electromagnetic interference (EMI) on the implantable cardiac pacemakers is evaluated based upon the analysis results. Both computer simulations and experiments using 800 MHz and 2 GHz transmitters in an actual train carriage confirm that excessively high EMF, high enough to affect the normal functions of the pacemaker, does not occur inside the carriage provided the safe distance of 22 cm specified for pacemaker users is kept. A simplified histogram estimation method for electric field strength is newly developed to deal with the complicated EMF distributions. It allows the EMI risk to pacemakers by cellular radio transmission to be quantitatively evaluated. Methodologies are described first. Typical results of FDTD analysis and actual measurement data are then shown. Finally, considerations and conclusions are made.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.8.3281/_p

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@ARTICLE{e88-b_8_3281,
author={Takashi HIKAGE, Toshio NOJIMA, Soichi WATANABE, Takashi SHINOZUKA, },
journal={IEICE TRANSACTIONS on Communications},
title={Electric-Field Distribution Estimation in a Train Carriage due to Cellular Radios in order to Assess the Implantable Cardiac Pacemaker EMI in Semi-Echoic Environments},
year={2005},
volume={E88-B},
number={8},
pages={3281-3286},
abstract={The electromagnetic field (EMF) distributions created inside a train carriage by the cellular radios of the passengers are analyzed and the impact their electromagnetic interference (EMI) on the implantable cardiac pacemakers is evaluated based upon the analysis results. Both computer simulations and experiments using 800 MHz and 2 GHz transmitters in an actual train carriage confirm that excessively high EMF, high enough to affect the normal functions of the pacemaker, does not occur inside the carriage provided the safe distance of 22 cm specified for pacemaker users is kept. A simplified histogram estimation method for electric field strength is newly developed to deal with the complicated EMF distributions. It allows the EMI risk to pacemakers by cellular radio transmission to be quantitatively evaluated. Methodologies are described first. Typical results of FDTD analysis and actual measurement data are then shown. Finally, considerations and conclusions are made.},
keywords={},
doi={10.1093/ietcom/e88-b.8.3281},
ISSN={},
month={August},}

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TY - JOUR
TI - Electric-Field Distribution Estimation in a Train Carriage due to Cellular Radios in order to Assess the Implantable Cardiac Pacemaker EMI in Semi-Echoic Environments
T2 - IEICE TRANSACTIONS on Communications
SP - 3281
EP - 3286
AU - Takashi HIKAGE
AU - Toshio NOJIMA
AU - Soichi WATANABE
AU - Takashi SHINOZUKA
PY - 2005
DO - 10.1093/ietcom/e88-b.8.3281
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2005
AB - The electromagnetic field (EMF) distributions created inside a train carriage by the cellular radios of the passengers are analyzed and the impact their electromagnetic interference (EMI) on the implantable cardiac pacemakers is evaluated based upon the analysis results. Both computer simulations and experiments using 800 MHz and 2 GHz transmitters in an actual train carriage confirm that excessively high EMF, high enough to affect the normal functions of the pacemaker, does not occur inside the carriage provided the safe distance of 22 cm specified for pacemaker users is kept. A simplified histogram estimation method for electric field strength is newly developed to deal with the complicated EMF distributions. It allows the EMI risk to pacemakers by cellular radio transmission to be quantitatively evaluated. Methodologies are described first. Typical results of FDTD analysis and actual measurement data are then shown. Finally, considerations and conclusions are made.
ER -