Diagnosable hall sensor

US8362764B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Andreas Peukert · Barnstorf, DE
• Wolfgang Kliemannel · Bohmte, DE

Key dates

• Filing date: Apr 2, 2009
• Grant date: Jan 29, 2013
• Expiry date: Jan 13, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R15/202
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring device for determining the strength of magnet fields using a Hall probe and a method for evaluating the function of a Hall sensor. The measuring device comprises a sensor having a Hall probe and an electric diagnosis conductor which is galvanically isolated from the Hall probe. The measuring device being able to continually monitor the sensor. In particular, the sensor can not only be checked qualitatively in regard to function or failure, but also quantitatively in regard to correct calibration such that, if necessary, an immediate correction or re-calibration of the sensor can be performed. In particular, measuring errors for instance, due to a temperature drift or because of mechanical stress of the sensor, can easily be eliminated.