Arrangement for measuring magnetic field strength or local differences therein has sensors whose signal varies with direction of total field acting on it/them relative to preferred direction

摘要

The arrangement has magnetic sensors (1), an arrangement for producing known magnetic fields and an evaluation unit (3). At least one known magnetic field (Hb) is provided that forms an angle with respect to the magnetic field to be measured (H). The output signal (8) of one or more magnetic sensors is determined by the angle of the direction of the total field (Hg) acting on it/them with respect to a preferred direction (2). AN Independent claim is also included for the following: a circuit arrangement for determining the tangent of the angle between the direction of a magnetic field and a preferred direction.