Light grid

US7034280B2 · kind B2 · utility

Assignee

• SICK AG · DE

Inventors

• Michael Beck · Waldkirch, DE
• Daniel Rieger · Olsberg, DE
• Frank Haberstroh · Teningen, DE

Key dates

• Filing date: Jun 29, 2004
• Grant date: Apr 25, 2006
• Expiry date: Aug 24, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V8/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a light grid having a transmitter strip for the transmission of a plurality of light beams and a receiver strip for the reception of these light beams, an evaluation unit for the processing of received signals generated in dependence on the light beams received and a memory for reference values which can be compared with the received signals by means of the evaluation unit, with a position transducer being provided for the determination of the position of an object introduced into the monitored zone of the evaluation unit being able to be supplied with position signals supplied by the position transducer and the comparison of the reference values with the received values being able to be carried out in dependence on the position signals.