Method for determining an exciter conductor spacing from a magnetic field sensor, method for calibrating the magnetic field sensor as well as calibratable magnetic field sensor and usage of an exciter conductor structure for determining an exciter conductor spacing

US9000754B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Roland Ernst · Erlangen, DE
• Markus Stahl-Offergeld · Erlangen, DE
• Hans-Peter Hohe · Heiligenstadt, DE

Key dates

• Filing date: Oct 26, 2012
• Grant date: Apr 7, 2015
• Expiry date: Jun 29, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/07
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In determining an exciter conductor spacing of an exciter conductor of an exciter conductor structure from a sensor element of a calibratable magnetic field sensor, first and second electric currents are impressed into the first and second exciter conductors of the exciter conductor structure to generate first and second magnetic field components in the sensor element of the magnetic field sensor, and a quantity is determined depending on the first and second magnetic field components by means of the sensor element. Further, the exciter conductor spacing of the exciter conductor from the sensor element of the magnetic field sensor is established in dependence on an exciter conductor intermediate spacing between the first exciter conductor and the spaced-apart second exciter conductor and the quantities depending on the first and second magnetic field components.