中国邮电高校学报(英文)

中国邮电高校学报(英文) ›› 2007, Vol. 14 ›› Issue (3): 113-116.doi: 1005-8885 (2007) 03-0113-04

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Compute extremely low-frequency electromagnetic field exposure by 3-D impendance method

韩宇南;吕英华; 张洪欣   

  1. Beijing University of Posts and Telecommunications, Beijing 100876, China
    Aerospace Science and Technology Group, Beijng 100076, China
  • 收稿日期:2006-09-23 修回日期:1900-01-01 出版日期:2007-09-30

Compute extremely low-frequency electromagnetic field exposure by 3-D impendance method

HAN Yu-nan;LV Ying-hua;ZHANG Hong-xin   

  1. Beijing University of Posts and Telecommunications, Beijing 100876, China
    Aerospace Science and Technology Group, Beijng 100076, China
  • Received:2006-09-23 Revised:1900-01-01 Online:2007-09-30

PDF

438

被引次数

24

摘要：

A 3-D impedance method has been introduced to compute the electric currents induced in a human body exposed to extremely low-frequency electromagnetic field. The 3-D impedance method has been deduced from Maxwell equations and is put into the computation and simulation effectively to the visible human body model, which has 196×114×626 cells and more than 40 types of tissues. As the result, two representative cases are investigated. One is exposure of the human body to 100 µT (1 000 mG), the limit recommended by the International Commission on Non-Ionizing Radiation Protection for the public and the other one is the exposure of human body to 0.4 µT (4 mG), the level at which a statistical link appears with a doubled risk of development of childhood leukaemia. The distribution of induced current density can be obtained and the maximum of induced current are found to be 16 mA/m2 and 0.07 mA/m2.

关键词:

3-D impedance method; induced current; magnetic flux density; visible human body model; extremely low frequency (ELF)

Abstract:

A 3-D impedance method has been introduced to compute the electric currents induced in a human body exposed to extremely low-frequency electromagnetic field. The 3-D impedance method has been deduced from Maxwell equations and is put into the computation and simulation effectively to the visible human body model, which has 196×114×626 cells and more than 40 types of tissues. As the result, two representative cases are investigated. One is exposure of the human body to 100 µT (1 000 mG), the limit recommended by the International Commission on Non-Ionizing Radiation Protection for the public and the other one is the exposure of human body to 0.4 µT (4 mG), the level at which a statistical link appears with a doubled risk of development of childhood leukaemia. The distribution of induced current density can be obtained and the maximum of induced current are found to be 16 mA/m2 and 0.07 mA/m2.

Key words:

3-D impedance method; induced current; magnetic flux density; visible human body model; extremely low frequency (ELF)

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