Patent · US Active

Electrical load detection apparatus

US8538032B2 · kind B2 · utility

3Cited by

1References

16Claims

0Family size

Assignee

HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

Genaro Woelfl · Salching, DE
Arnold Knott · Jægersborg, DK
Michael Gueth · Meinerzhagen, DE

Key dates

Filing date	Apr 28, 2009
Grant date	Sep 17, 2013
Priority date	—
Expiry date	May 15, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04R3/00
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A load detection technique for a load comprising multiple frequency-dependant sub-loads comprises measuring a representation of the impedance characteristic of the load; providing stored representations of a multiplicity of impedance characteristics of the load; each one of the stored representations represents the impedance of the load when at least a particular one of the sub-loads is in a fault condition; and comparing the measured representation of the current impedance characteristic of the load with each one of the stored representations and in case that the measured representation matches a stored representation, identifying the sub-load or sub-loads being in a fault condition by the corresponding stored representation.

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