Two-dimensional position sensing system

Details Two-dimensional position sensing system Two-dimensional position sensing system

2007-08-16

2010-10-12

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

C324S207240

Reexamination Certificate

active

07812596

ABSTRACT:
A position sensing system includes a plurality of two-axis anisotropic magneto-resistive (AMR) sensors to determine the position of a user interface. A magnetic member is coupled to the user interface, which is movable to a position along a random path. The plurality of two-axis AMR sensors is arranged in a two-dimensional sensor array that is spaced apart from the magnetic member. A signal processor circuit is operable to sense the electrical resistance values of each two-axis AMR sensor, to determine the position of the user interface from the resistance values, and to supply position feedback data representative of the determined position.

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