Optoelectronic sensor for recognizing object edges

US9677914B2 · kind B2 · utility

Assignee

• SICK AG · DE

Inventors

• Gerhard Merettig · Waldkirch, DE
• Roland Bergbach · Malterdingen, DE
• Matthias Schonstein · Glückstadt, DE
• Ingolf Hörsch · Emmendingen, DE
• Matthias Gotz · Glückstadt, DE
• Alexander BOHLI · Trento, IT

Key dates

• Filing date: May 6, 2014
• Grant date: Jun 13, 2017
• Expiry date: Jan 7, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B11/028
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optoelectronic sensor for recognizing object edges of objects comprises at least three light transmitters which are arranged such that at least two different spacings result between two respective light transmitters. For recognizing an object edge, an evaluation unit is configured to carry out a common evaluation of an image taken by a light receiver of a light spot generated by the transmitted light beams of a first light transmitter and of an image taken by a light receiver of a light spot generated by the transmitted light beams of another light transmitter. The pair of light transmitters to be used for the common evaluation can be selected in dependence on a selection criterion from at least two differently spaced apart pairs of light transmitters.