A linear position sensor based on the unique functionality of the magnetically bistable glass-coated microwire is presented. Despite the magnetic nature of the sensor, it is possible to separate the external magnetic field’s contribution, thus providing independence from parasitic external magnetic fields. With the presented unique approach, it is possible to transfer the linear position of the piston into the switching time and obtain high sensitivity down to 1 µm.
P. Jacko, R. Jurč, L. Galdun, Ľ. Hvizdoš, D. Kováč, R. Varga