Low-Frequency Dosimetry of Inhomogeneous Magnetic Fields Using the Coil Source Model and the Household Appliance
Low-Frequency Dosimetry of Inhomogeneous Magnetic Fields Using the Coil Source Model and the Household Appliance
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DOI：
10.1109/tbme.2006.890507
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发表时间：
2007-02
影响因子：
4.6
通讯作者：
S. Nishizawa;F. Landstorfer;Y. Kamimura
中科院分区：
文献类型：
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作者：
S. Nishizawa;F. Landstorfer;Y. Kamimura
本文采用欧洲标准EN50366（CENELEC）中规定的线圈模型作为真实的家用电器的替代源模型，研究了极低频（ELF）（50 Hz）下的磁场特性和剂量学。磁场矢量的准确性和感应电流密度的值，这是实现与线圈模型，进行了比较，从等效源模型获得的两个测试装置（一个钻孔机和一个手搅拌机）的结果。结果表明，使用线圈模型和真实的器具获得的磁场（主导分量和强度）显示出彼此一致，最大差异为5 dB。在数值人体模型（均质和解剖体模型）和真实的器具中计算的感应电流密度也显示出彼此良好的一致性，最大差异为1.6倍（通过解剖体模型）。此外，使用线圈模型计算的场矢量和感应电流密度值的值被示出为高于在真实的器具的情况下计算的那些。基于这些结果，EN 50366中规定的线圈模型的适用性证实了两种应用的测试器具的适用性
In this paper, the magnetic field properties and the dosimetry at ELF (50 Hz) are investigated using a coil model, which is prescribed in the European standard EN50366 (CENELEC) as a substitute source model for real household appliances. The accuracy of magnetic field vectors and values of the induced current density, which is achieved with the coil model, were compared with the results of two test appliances (a drilling machine and a hand mixer) obtained from the equivalent source model. It was demonstrated that the magnetic fields obtained (dominant component and strength) using the coil model and the real appliance show an agreement with each other with a maximum difference of 5 dB. The calculated induced current densities in the numerical human body models (homogeneous and anatomical body models) and the real appliances also show a good agreement with each other with a maximum difference by a factor of 1.6 (by the anatomical body model). Furthermore, the values of both field vectors and induced current density values calculated using the coil model were shown to be higher than those calculated in the case of the real appliances. Based on these results, the applicability of the coil model prescribed in EN50366 confirms that of the two applied test appliances