Source Structure Design of Phase Magnetic Beacon Positioning System

Abstract

In this paper, a magnetic beacon structure is designed for phase direction finding and positioning. In the method of positioning by measuring the amplitude of magnetic field, the magnetic field signal is susceptible to the influence of strong abnormal field around, and there are theoretical errors in the positioning algorithm, so the improvement of accuracy is limited, so the phase Angle measuring positioning method with high accuracy is introduced. Firstly, based on the basic magnetic field formula, the permanent magnet is decomposed into three components to obtain the expression of rotating magnetic field, so as to design a magnetic beacon structure, and then Matlab programming simulation is used to obtain the magnetic field intensity variation curve of the structure within two cycles, which preliminarily confirms the feasibility of the structure. Finally, Comsol Multiphysics simulation software was used to verify the structure. Finally, it was concluded that the magnetic field generated by the structure could meet the requirements of phase Angle measurement positioning.