Patent · US Active

Method for measuring a current, and current-measuring device

US11150272B2 · kind B2 · utility

0Cited by

2References

3Claims

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Assignee

Siemens Aktiengesellschaft · DE

Inventors

Abderrahim Chahid · Hemhofen, DE
Ingolf Hoffmann · Herzogenaurach, DE
Alexander Itzke · Nuremberg, DE
Roland Weiss · Iserlohn, DE

Key dates

Filing date	Apr 4, 2018
Grant date	Oct 19, 2021
Priority date	—
Expiry date	Oct 17, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/0017
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for measuring a current, a plurality of flux-gate field sensors is arranged with radial symmetry on a first circumferential path, and a plurality of Hall sensors is arranged with radial symmetry on a second circumferential path such that a one of the flux-gate field sensors is placed adjacent a one of the Hall sensors, with the flux-gate field sensors having a sensitivity which is higher by a factor 5 to 20 than a sensitivity of the Hall sensors. At least one of the plurality of flux-gate field sensors is evaluated so as to determine a current intensity, when two of the flux-gate field sensors generate measurement values within a measurement range, or at least one of the plurality of Hall sensors is evaluated so as to determine a current intensity, when the measurement values of the two flux-gate field sensors are outside of the measurement range.

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