Patent · US Active

System and method of magnetic shielding for sensors

US9429488B2 · kind B2 · utility

6Cited by

31References

19Claims

0Family size

Assignee

General Electric Company · US

Inventors

Dan Tho Lu · Minden, US
Pekka Tapani Sipila · Garching bei München, DE
Charles Terrance Hatch · Gardnerville, US
Lam Arthur Campbell · Tomball, US
Miguel Garcia Clemente · Karlsruhe, DE

Key dates

Filing date	Apr 10, 2014
Grant date	Aug 30, 2016
Priority date	—
Expiry date	Oct 28, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01L9/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A system includes a magnetostrictive sensor. The magnetostrictive sensor includes a driving coil configured to receive a first driving current and to emit a first magnetic flux portion through a target and a second magnetic flux portion. The magnetostrictive sensor also includes a first sensing coil configured to receive the first magnetic flux portion and to transmit a signal based at least in part on the received first magnetic flux portion. The received first magnetic flux portion is based at least in part on a force on the target. The magnetostrictive sensor further includes a magnetic shield disposed between the driving coil and the first sensing coil. The magnetic shield is configured to reduce the second magnetic flux portion received by the first sensing coil.

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