Rotary transducer with monitoring of the bearing wear and method therefor

US8539811B2 · kind B2 · utility

Assignee

• Baumer Hübner GmbH · DE

Inventors

• Lothar Wilhelmy · Berlin, DE
• Bernhard Hiller · San Jose, US
• Jochen Wilhelmy · Berlin, DE

Key dates

• Filing date: Jun 20, 2008
• Grant date: Sep 24, 2013
• Expiry date: Aug 2, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2233/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A rotary transducer has a detector device with a measurement sensor, used to generate a measurement signal representative of angular position and/or velocity of an object. The detector device has a rotary bearing and a material measure that can be rotated relative to the measurement sensor and is arranged in the measurement field of the latter. A monitoring device, connected to the measurement sensor, which can provide a state signal representative of the state of wear of the rotary transducer, is integrated in the rotary transducer. In order to be able to timely warn of mechanical failure of the rotary transducer, the monitoring device is provided with a register that can permanently store as value representative of the state of wear of the rotary bearing and is formed from the information relating to the angular position and/or velocity contained in the measurement signal.