SINGLE CHIP REFERENCE BRIDGE TYPE MAGNETIC SENSOR FOR HIGH-INTENSITY MAGNETIC FIELD

Title:

SINGLE CHIP REFERENCE BRIDGE TYPE MAGNETIC SENSOR FOR HIGH-INTENSITY MAGNETIC FIELD

Document Type and Number:

WIPO Patent Application WO/2015/096744

Kind Code:

A1

Abstract:

A single chip reference bridge type magnetic sensor for high-intensity magnetic field. The sensor comprises a substrate (1), a reference arm, an induction arm, shielding structures (4) and attenuators (5). The reference arm and the induction arm comprise at least two rows/columns of reference element strings (3) and induction element strings (2), respectively, the reference element strings (3) and the induction element strings (2) are formed by one or more same magnetic resistance sensing elements electrically connected, the reference element strings (3) and the induction element strings (2) are mutually staggered, one shielding structure (4) is correspondingly arranged on each reference element string (3), one attenuator (5) is correspondingly arranged on each induction element string (2), the magnetic resistance sensing elements are selected from one of AMR, GMR or TMR sensing elements, and the shielding structures (4) and the attenuators (5) are all long rectangular bar arrays made of permeability alloy, a ferromagnetic material. The sensor can be implemented on three electric bridge structures of a quasi-bridge, a reference half-bridge and a reference full-bridge. The sensor has the advantages of low power consumption, better linearity, wide working range, and being capable of operating in high-intensity magnetic field, and the like.

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Inventors:

DEAK JAMES GEZA (CN)

Application Number:

PCT/CN2014/094838

Publication Date:

July 02, 2015

Filing Date:

December 24, 2014

Export Citation:

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Assignee:

JIANGSU MULTIDIMENSION TECH CO (CN)

International Classes:

G01R33/09

Foreign References:

CN203658561U	2014-06-18
CN103592608A	2014-02-19
CN203587786U	2014-05-07
CN103645449A	2014-03-19
CN103267955A	2013-08-28
CN203337808U	2013-12-11
CN102323554A	2012-01-18
CN101587174A	2009-11-25
US5217010A	1993-06-08
JP2013053903A	2013-03-21
CN201310203311A	2013-05-28

Other References: