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Open AccessArticle

Long-Term Monitoring of Extremely Low Frequency Magnetic Fields in Electric Vehicles

China Academy of Information and Communications Technology, No.52, Huayuan bei Road, Beijing 100191, China
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Int. J. Environ. Res. Public Health 2019, 16(19), 3765; https://doi.org/10.3390/ijerph16193765
Received: 22 August 2019 / Revised: 26 September 2019 / Accepted: 28 September 2019 / Published: 7 October 2019
Extremely low frequency (ELF) magnetic field (MF) exposure in electric vehicles (EVs) has raised public concern for human health. There have been many studies evaluating magnetic field values in these vehicles. However, there has been no report on the temporal variation of the magnetic field in the cabin. This is the first study on the long-term monitoring of actual MFs in EVs. In the study, we measured the magnetic flux density (B) in three shared vehicles over a period of two years. The measurements were performed at the front and rear seats during acceleration and constant-speed driving modes. We found that the B amplitudes and the spectral components could be modified by replacing the components and the hubs, while regular checks or maintenance did not influence the B values in the vehicle. This observation highlights the necessity of regularly monitoring ELF MF in EVs, especially after major repairs or accidents, to protect car users from potentially excessive ELF MF exposure. These results should be considered in updates of the measurement standards. The ELF MF effect should also be taken into consideration in relevant epidemiological studies. View Full-Text
Keywords: electric vehicle; extremely low frequency; magnetic field exposure; magnetic flux density; measurement electric vehicle; extremely low frequency; magnetic field exposure; magnetic flux density; measurement
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Yang, L.; Lu, M.; Lin, J.; Li, C.; Zhang, C.; Lai, Z.; Wu, T. Long-Term Monitoring of Extremely Low Frequency Magnetic Fields in Electric Vehicles. Int. J. Environ. Res. Public Health 2019, 16, 3765.

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