MAGNETIC SENSOR SYSTEM

摘要

A magnetic sensor assembly (10) measures changes in the position of a lever arm (22). The magnetic sensor assembly has a support (22). The lever arm (22) can pivot about an axis of rotation or a pivot point (P) and is attached to the support (12) at a first end (25) of the lever arm (22). A magnet (40) produces a magnetic field adjacent the first end of the lever arm (22) and is fixed to rotate in a predetermined arc about the pivot point (P) or axis of rotation in response to a pivotal movement of the lever arm. A magnetic sensor (60) is positioned in proximity to the magnet (40) to detect changes in the magnetic field due to rotation of the magnet (40) along a predetermined arc. Preferably the predetermined arc has a constant radius of curvature forming at least a portion of a circular arc. The magnetic sensor assembly (10) preferably employs a magnet (40) that is at least arcuate in shape more preferably the magnet (40) is annular.