Patent · US Active

Method and device for determining a sensor coil inductance

US11143681B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Buck · Tamm, DE
Andreas Merz · Freiberg am Neckar, DE
Stefan Leidich · Rutesheim, DE

Key dates

Filing date	Jun 27, 2016
Grant date	Oct 12, 2021
Priority date	—
Expiry date	May 27, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining a sensor coil inductance of an eddy current sensor using an LC oscillator circuit includes determining the sensor coil inductance via integration, as a function of an oscillation frequency and a resonance capacitance of the LC oscillator circuit. The method further includes detuning, at least once, the oscillation frequency during the integration.

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