Position sensor using Hall Effect (RTM) probes, for measuring a position in two dimensions used in joysticks, computer mouse, pick and place, gear levers, etc.

摘要

The position sensor has, a stator defining a secondary air gap inside of which is located at least a Hall Effect (RTM) probe, and a movable magnet in a principal air gap. The structure of the stator is made up of parts (1 to 4) defining: - a first secondary air gap (6,8) in which is located a least a first Hall Effect (RTM) probe (12) which produces a signal which is a function of the displacement of the movable magnet (11) with respect a first degree of freedom; - a second secondary air gap (7,9) in which is located at least a second Hall Effect probe (13) which delivers a signal as a function of the displacement of the magnet (11) with respect to a second degree of freedom. The stator structure is composed of four poles in a soft magnetic material defining two pairs of secondary air gaps crossing at a mid point and the principal air gap (10) is plane.