Inductive position sensor

US8542007B2 · kind B2 · utility

Assignee

• ELMOS SEMICONDUCTOR SE · DE

Inventors

• Robert Brands · Dortmund, DE
• Wolfgang Büsser · Dortmund, DE

Key dates

• Filing date: Mar 26, 2008
• Grant date: Sep 24, 2013
• Expiry date: Jan 21, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/208
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In an inductive position sensor for determining the position, particularly the rotation angle, of a movable element, at least two subsystems are provided, which each have second transmitting units with an actuating unit, an oscillating circuit on the movable element, and a receiving unit with an evaluating unit. According to the invention, it is provided that the operation of the individual subsystems is carried out alternately. Thus, if one subsystem is operating, all other subsystems are deactivated. In this way, all subsystems are individually operated in a consecutive manner. The synchronization required to do so is provided by a non-galvanic coupling of the subsystems, and in particular by an inductive coupling by way of preferably existing inductances of the subsystems.