Patent · US Expired

Method and device for detecting incorrect polarity in a signal transducer formed as an inductive sensor

US6727686B2 · kind B2 · utility

9Cited by

6References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joern Beckmann · Hemmingen, DE
Ralf Klewin · Stuttgart, DE
Armin Sayer · Ostelsheim, DE
Athanasios Hailas · Eßlingen, DE

Key dates

Filing date	Sep 16, 2002
Grant date	Apr 27, 2004
Priority date	—
Expiry date	Sep 16, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01P21/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and a device for detecting mispolarization in a signal transducer is described, with which the output signal of the signal transducer—that has at least one singularity—is converted into a square-wave signal. Intervals between specifiable signal-level changes are monitored in the region of the singularity, or plausibility windows are set, within which specifiable events must occur. If the intervals do not correspond to the expected intervals, or if specifiable events do not occur within the specifiable time windows or plausibility windows, mispolarization is detected. The method for detecting mispolarization is used, for example, in the case of a signal transducer having a plurality of uniform angular points and one reference point, but it is not limited to such transducers.

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