Incremental displacement transducer and method for determining a displacement of a first object relative to a second object

US8242774B2 · kind B2 · utility

Assignee

• PEPPERL+FUCHS GMBH · US

Inventors

• Christian Speckmann · Bensheim, DE
• Timo Galm · Mudau, DE

Key dates

• Filing date: Dec 18, 2008
• Grant date: Aug 14, 2012
• Expiry date: Jun 18, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/24404
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An incremental displacement transducer and method for determining a displacement of a first object relative to a second object having a scanning unit linked or to be linked with the first object for scanning a spacing or division track linked or to be linked with the second object having first areas and second areas arranged in alternating manner with a period length, the first areas having a first physical property and the second areas a second physical property differing therefrom, and where the scanning unit has a plurality of sensors for scanning the first areas and the second areas on the basis of the first and/or second physical property, and having an evaluation unit linked with the scanning unit for determining the displacement on the basis of measuring signals of the sensors.