Hall effect sensor for detecting an induced image magnet in a sm

Details Hall effect sensor for detecting an induced image magnet in a sm Hall effect sensor for detecting an induced image magnet in a sm

1997-02-07

1998-01-06

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

324235, G01R 3307, G01B 704

Patent

active

057059241

ABSTRACT:
In order to measure the permeability of a magnetic material, a permanent magnet is positioned at a distance from the surface of a magnetic material. A first magnetic field sensor is placed proximate the magnetic material on the magnetic axis of the permanent magnet. The axis of sensitivity of the magnetic field sensor is perpendicular to the field of the permanent magnet and in a plane perpendicular to the surface of the magnetic material. A second magnetic field sensor for compensating for temperature and stray field effects can be positioned perpendicular to the magnetic axis of the permanent magnet with its axis of sensitivity parallel to the axis of sensitivity of the magnetic field sensor.

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