Patent · US Active

Method and device for verifying an electrical coupling state of an inductive load

US7486080B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Albrecht Föll · Regensburg, DE
Jose Kissler · Bad Abbach, DE
Thomas Röhrl · Barbing, DE

Key dates

Filing date	Mar 29, 2006
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Dec 27, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electrical coupling state is monitored between an inductive load and a circuit configuration. The latter has a first and a second coupling point for coupling to the inductive load. A first voltage value is determined between the first and second coupling points. The first voltage value is tested for the occurrence of a characteristic voltage pulse, which can be triggered by reduction of a magnetic flux in the inductive load by way of a steep-edged change in the amount of current flow through the inductive load. An error is identified in the coupling state if the characteristic voltage pulse does not occur within a predefinable time period. The absence of an error in the coupling state is also identified if the voltage pulse does occur.

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