Patent · US Active

Monitoring unit and method for monitoring position signals of incremental position-measuring devices

US9766097B2 · kind B2 · utility

1Cited by

11References

18Claims

0Family size

Assignee

DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

Ingo Joachimsthaler · Traunstein, DE
Thomas Mueller · Seebruck, DE
Thomas Schuermann · Rosenheim, DE

Key dates

Filing date	Nov 29, 2011
Grant date	Sep 19, 2017
Priority date	—
Expiry date	Feb 23, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/2457
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a monitoring unit for monitoring position signals of incremental position-measuring devices, at least two position signals are applied on the input side that result from the scanning of an incremental graduation track by a scanning unit and that are out-of-phase with each other. The monitoring unit includes a signal logic unit with which at least two position-dependent status data words are able to be generated from different position signals, and an evaluation unit to which the status data words are supplied, in which invalid statuses are ascertainable by comparing the status data words, and an error signal is able to be generated in response to an ascertained invalid status.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.