Topology Optimization and Performance Simulation of Planar Coil Fluxgate Sensor

A method for lower power consumption of planar coil fluxgate sensor is proposed, which based on the standpoint of demagnetizing field, then according to this method to optimize coil and core structure of planar coil fluxgate sensor and make simulation verification. Although planar coil fluxgate sensor possesses the advantages of simple structure and preparation, its large power consumption needs further research which caused by poor coil exciting efficiency and large excitation coil resistance. On the basis of the analysis of planar coil fluxgate theory, this paper presents the way to reduce the power consumption of the fluxgate sensor which using the standpoint of demagnetizing field, and designs several planar coil fluxgate sensor structure, finally make magnetic field simulation. The simulation results provide theoretical support for further devices preparation.