Shielded Fluxgates for Open-Loop Current Transducers; Measuring High Flux Densities Fast

Author

Teppan, Wolfram

Author_Institution

R&D LEMSA, Geneva

fYear

2006

fDate

22-25 Oct. 2006

Firstpage

943

Lastpage

947

Abstract

A novel concept to measure magnetic flux densities up to more than one hundred milliteslas is presented. It offers constant and stable sensitivity as well as low offset over a wide temperature range together with a short response time of some microseconds. The magnetic induction sensor consists of a tiny fluxgate (1.7 times 1.1 times 0.9 mm³) which is mounted in a precision magnetic shield having a constant shielding effect. This assembly is connected to an electronic circuit providing excitation of the fluxgate and a feedback current for local flux density compensation.

Keywords

electromagnetic induction; fluxgate magnetometers; magnetic flux; magnetic sensors; magnetic shielding; magnetic variables measurement; transducers; electronic circuit; feedback current; magnetic flux density measurement; magnetic induction sensor; magnetic shield; open-loop current transducers; shielded fluxgates; Current measurement; Delay; Density measurement; Magnetic flux; Magnetic flux density; Magnetic sensors; Magnetic shielding; Temperature distribution; Temperature sensors; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2006. 5th IEEE Conference on

Conference_Location

Daegu

ISSN

1930-0395

Print_ISBN

1-4244-0375-8

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2007.355779

Filename

4178774