Sensor apparatus for detecting a target object and a method for operating a sensor apparatus for detecting a target object

US10734996B2 · kind B2 · utility

Assignee

• BALLUFF GMBH · DE

Inventors

• Joachim Nagel · Friedrichsdorf, DE
• Michael Friedrich · Wolfschlugen, DE
• Michael Grandl · Munich, DE
• Ümit Koyuncu · Esslingen am Neckar, DE

Key dates

• Filing date: Feb 23, 2018
• Grant date: Aug 4, 2020
• Expiry date: Aug 19, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V3/105
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor apparatus for detecting a target object is provided, together with a corresponding method for operating the sensor apparatus. The sensor apparatus comprises a transmitter device which is operated by periodic excitation signals at a basic frequency, a receiver device which couples to the transmitter device, wherein the coupling is dependent on a relative position of the target object with respect to the receiver device, and the receiver device delivers signals at the basic frequency which are dependent on the relative position of the target object with respect to the receiver device. A threshold value checking device checks whether signals lie within or outside a threshold value range. A linking device acts on signals from the receiver device or signals derived therefrom in such a way that signals or signal combinations are shifted into the threshold value range insofar as they previously lay outside this range.