Journal of Radiation Research and Radiation Proces ›› 2016, Vol. 34 ›› Issue (1): 10601-010601.

• RADIATION PROTECTION •

### Safety evaluation of high frequency electromagnetic radiation in subway train

ZHOU Wenying  LU Mai

1. (Key Lab. of Opt-Electronic Technology and Intelligent Control (Lanzhou Jiaotong University), Ministry of Education,,
Lanzhou 730070, China)
• Received:2015-09-21 Revised:2015-11-08 Online:2016-02-20 Published:2015-12-07
• Contact: Ph.D. MAI Lu, professor, doctoral tutor E-mail:mai.lu@hotmail.com
• About author:ZHOU Wenying, female, was born in November 1984 and graduated from Lanzhou University of Technology in 2012. Now she is a doctor candidate in Lanzhou Jiaotong University, focusing on traffic information engineering and control, biomedical electromagnetism, lecturer
• Supported by:

Supported by National Nature Science Foundation of China(51267010, 51567015), Gansu Science Fund for Distinguished Young Scholars(1308RJDA013), and Lanzhou Jiaotong University Fund for Distinguished Young Scholars(2015036)

Abstract:

In order to effectively evaluate the safety in high frequency electromagnetic environment radiated by antenna of passenger information system (PIS) of subway train, the 5.8 GHz frequency Yagi-antenna and the human body model was designed. By using the three-dimensional electromagnetic simulation software High Frequency Structure Simulator (HFSS), the high frequency electromagnetic environment model of the driver’s cab of B-type subway train under the electromagnetic exposure of antenna was established while the occupational electromagnetic exposure of subway train driver was simulated. The results showed that when the input power of the antenna reached its maximum value of 50 W, compared with the limit values for electromagnetic occupational exposure constituted by International Commission on Non-Ionizing Radiation Protection (ICNIRP), the specific absorption rate of human body model was 0.63 mW/kg, which was lower than the basic limitation 10 W/kg; the strength of electric field was 72.37 V/m, which was lower than the reference limitation 137 W/kg; the intensity of magnetic field was 0.72 A/m, which was higher than the reference limitation 0.36 A/m. The intensity of magnetic field would be 0.33 A/m, which was lower than the reference limitation when antenna’s input power was 10 W. It demonstrates that in such electromagnetic environment, the high frequency electromagnetic radiation in driver’s cab would be harmful to subway train driver’s health. Therefore, the input power of antenna should be lower than 10 W to ensure that the driver is in the safety electromagnetic exposure environment.

CLC Number:

• TL75+1，U285.21+1