Development of Augmented-Reality-Based Magnetic Field Visualization System as an Educational Tool

Electromagnetism is a difficult subject to learn because the phenomenon is not observed directly and does not have a perceivable, concrete image. The visualization of the phenomenon will greatly help beginners understand electromagnetics. This paper proposes an augmented-reality-based visualization system of the magnetic flux density around current-generating objects. The system can be realized with a portable magnetic field sensor and a familiar device-a smartphone. The effectiveness of the system is verified through experiments, and our findings suggest that the system can effectively help an operator gain an intuitive understanding of the magnetic flux density.