China Academy of Information and Communications Technology, No.52, Huayuan bei Road, Beijing 100191, China.
Int J Environ Res Public Health. 2019 Oct 7;16(19):3765. doi: 10.3390/ijerph16193765.
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.
电动汽车（EV）中的极低频（ELF）磁场（MF）暴露引起了公众对人类健康的关注。已经有许多研究评估了这些车辆中的磁场值。然而，目前还没有关于车内磁场时变的报告。这是第一项关于电动汽车中实际 MF 的长期监测研究。在该研究中，我们在两年内对三辆共享车辆进行了磁场通量密度（B）的测量。在加速和恒速驾驶模式下，在前排和后排座椅上进行了测量。我们发现，通过更换部件和轮毂，可以改变 B 幅度和频谱分量，而定期检查或维护不会影响车辆中的 B 值。这一观察结果强调了定期监测电动汽车中 ELF MF 的必要性，尤其是在重大维修或事故后，以保护车内使用者免受潜在的过量 ELF MF 暴露。这些结果应在测量标准的更新中得到考虑。在相关的流行病学研究中，也应考虑 ELF MF 效应。
