SENSOR COMPRISING MEANS FOR OPTIMIZING A MAGNETIC FIELD

摘要

A magnetic assembly apparatus and method for optimizing the magnetic field characteristics generated by the magnetic assembly used in active speed sensors. The magnetic assembly comprising a plurality of pole pieces inserted within a tubular magnet. By optimizing the geometry of the magnetic assembly, the region of usable magnetic field is altered to accommodate the switching characteristics of a given magnetic sensing device allowing the use of low cost sensing devices.