Research on the influence of power frequency magnetic field of pantograph on pacemaker wearers' health in high-speed EMU.

Autor:	Tian R; Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, No. 88 Anning West Road, Anning District, Lanzhou 730070, China., Li WX; Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, No. 88 Anning West Road, Anning District, Lanzhou 730070, China., Lu M; Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, No. 88 Anning West Road, Anning District, Lanzhou 730070, China., Yu L; China Railway First Survey and Design Institute Group Co., Ltd, No. 131, Hezheng Road, Chengguan District, Lanzhou 730030, Gansu Province, China., Zhang JQ; Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, No. 88 Anning West Road, Anning District, Lanzhou 730070, China.
Jazyk:	angličtina
Zdroj:	Radiation protection dosimetry [Radiat Prot Dosimetry] 2024 Apr 20; Vol. 200 (6), pp. 588-597.
DOI:	10.1093/rpd/ncae057
Abstrakt:	When the popular means of transportation-high-speed trains meet the increasing rate of pacemaker implantation year by year, the research on the magnetic field environment on the health of pacemaker wearers in the carriage becomes an urgent problem. In this work, models of an electric multiple unit carriage with a pantograph as well as passengers with pacemakers were built by using COMSOL Multiphysics software. The B, Ein and Jin of human heart and other tissues, and the induced voltage (Vin) at the pacemaker electrode were calculated under the pantograph operating condition, so as to assess the effect of its magnetic field on the health of pacemaker wearers. The results showed that Bmax in the carriage without passengers is 121.246 μT, occurs near the window. In the carriage, the Bmax, Ein max and Jin max of heart and body, Vin at the pacemaker electrode of the passenger next to the window are greater than that in the middle of the carriage. The Bmax, Ein max and Jin max of passengers' heart are 11.301μT, 1.613 mV/m and 139.030 μA/m2, respectively. The Bmax, Ein max and Jin max of passengers' body are 12.597μT, 0.788 mV/m and 75.299 μA/m2, respectively. The maximum value of Vin at the tip of the pacemaker electrode of the passengers' is 0.048 mV. The Bmax, Ein max in all tissues of passengers are much smaller than the basic limits of electromagnetic exposure to the public set by the International Commission on Non-Ionizing Radiation. Vin at the electrode tip of passengers' pacemakers are less than the perception sensitivity set by the International Organization for Standardization. This work illustrated that the magnetic field generated by the pantograph is within the recognized accepted limits for passengers with pacemakers, but we still recommended that passengers wearing pacemakers should stay as far away from windows as possible. (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)
Databáze:	MEDLINE
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