Magnetic Field Fluctuation Due to Movement of Automobile

Abstract

The fluctuations of magnetic field (FMF) from automobiles of different shapes and sizes running north to south, and east to west are measured and the characteristics are grasped. The direction of magnetization of the automobile is assumed by the waveform and amplitude of the FMF obtained by the measurements. In this report, the distribution of disturbance magnetic fields around the automobile is measured, by which the size, direction and location of magnetic dipole is predicted. In order to obtain the size and direction of dipole M of the automobile, the distribution of disturbance magnetism around that is measured and is calculated, using the BTnet method. Finally, the amplitude of the FMF calculated using the size and direction of magnetic dipole M of the automobiles are compared with those measured.