Patent · US Active

Reactance measurement

US10816509B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

OXFORD UNIVERSITY INNOVATION LIMITED · GB

Inventors

Kamaljit Singh Chana · Felton, GB
Jonathan Shamus Sullivan · Farnborough, GB

Key dates

Filing date	Jan 17, 2017
Grant date	Oct 27, 2020
Priority date	—
Expiry date	Apr 16, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01R27/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Apparatus and methods for reactance measurements are disclosed. The apparatus and methods are particularly suitable for eddy current proximity sensors in turbo-machine assemblies. In one arrangement, there is provided an apparatus comprising a circuit for receiving a sensing component of a sensor. The circuit has a unit having fixed reactance. An electrical source is provided for driving an alternating current through the circuit. An analysis unit measures the phase of a signal in the circuit that is dependent on the reactance of the sensing component. A measure of the reactance of the sensing component is output based on the measured phase.

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