Method for operating a position measuring device

US7043398B2 · kind B2 · utility

Assignee

• DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

• Hermann Hofbauer · Trostberg, DE
• Helmut Huber · Niederalteich, DE
• Erich Strasser · Trostberg, DE
• Steffen Bielski · Garching bei München, DE

Key dates

• Filing date: May 7, 2002
• Grant date: May 9, 2006
• Expiry date: May 7, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/24457
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for determining a signal running time between a position measuring system and an evaluation unit. The system includes a position measuring system that has a graduation connected to a moving element, a scanning unit that scans the graduation, wherein scanning of the graduation generates signals representative of a position of the moving element and a transceiver means for generating serial data that is transmitted along a data line connected to the transceiver. The system further includes an evaluation unit connected to the data line, the evaluation unit having means for determining a signal running time between the position measuring system and the evaluation unit.