Simulation and optimization of a micro fluxgate sensor with mixed material core

Fluxgate sensor is a kind of magnetic field detection device with high temperature stability. Miniature fluxgate sensor improves the application performance of fluxgate sensor by taking the advantage of small size. However, due to the high power consumption determined by the saturation characteristics of the core, the core parameters have a significant impact on the power consumption and other parameters of the fluxgate. On the basis of previous studies, a micro fluxgate with mixed materials between the core in the excitation coil and the core in the induction coil is proposed in this paper. The simulation results show that this method can significantly reduce the power consumption of the fluxgate while reducing the flux leakage of the fluxgate sensor.