Research on pulse induction metal detector probe based on finite element simulation

Abstract Metal detection technology based on the principle of electromagnetic induction has always played an important role in the field of mine detection. In metal detectors, the probe coil is an essential component, and its performance affects the overall performance of the system. This paper introduces the basic principles of pulsed electromagnetic induction and constructs a model of the metal detector probe using the finite element electromagnetic simulation software Ansys Maxwell. The study explores the impact of the coil shape and radius, the number of turns, and the coil current on the primary field generated by the probe coil, as well as the influence of different metallic target materials on the secondary field received by the coil. Finally, the effectiveness of the simulation is verified by the experiments. The research findings have certain reference significance for optimizing the best parameter configuration of the probe coil.