Title:
ALL-QUADRANT MEASUREMENT METHOD FOR MIDDLE-LARGE MAGNETIC FIELD
Document Type and Number:
WIPO Patent Application WO/2018/090634
Kind Code:
A1
Abstract:
Disclosed is an all-quadrant measurement method for a middle-large magnetic field, relating to the technical field of magnetic field measurement. The method comprises: placing four orthogonally configured magnetic resistances in an external magnetic field; determining two magnetic resistances with the minimum resistance values, thereby determining that the other two magnetic resistances are in an S1 status, and making resistance values of the two magnetic resistances which are in the S1 status be R1 and R2, and at the same time taking an initial reference layer magnetization direction of the two magnetic resistances as a given reference layer magnetization direction when there is no magnetic field; respectively calculating, according to the resistance values of the two magnetic resistances, an included angle between a free layer magnetization direction and the reference layer magnetization direction of the two magnetic resistances; respectively calculating, according to the given reference layer magnetization direction and the included angle between the free layer magnetization direction and the reference layer magnetization direction of the two magnetic resistances, the free layer magnetization direction of the two magnetic resistances; and solving, according to the given reference layer magnetization direction and the free layer magnetization direction of the two magnetic resistances, a magnetic field amplitude and direction of the external magnetic field.
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Inventors:
OUYANG YONG (CN)
HE JINLIANG (CN)
HU JUN (CN)
WANG SHANXIANG (CN)
ZHAO GEN (CN)
WANG ZHONGXU (CN)
ZENG RONG (CN)
ZHUANG CHIJIE (CN)
ZHANG BO (CN)
YU ZHANQING (CN)
HE JINLIANG (CN)
HU JUN (CN)
WANG SHANXIANG (CN)
ZHAO GEN (CN)
WANG ZHONGXU (CN)
ZENG RONG (CN)
ZHUANG CHIJIE (CN)
ZHANG BO (CN)
YU ZHANQING (CN)
Application Number:
PCT/CN2017/090545
Publication Date:
May 24, 2018
Filing Date:
June 28, 2017
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
SICHUAN ENERGY INT RES INST TSINGHUA UNIV (CN)
SICHUAN ENERGY INT RES INST TSINGHUA UNIV (CN)
International Classes:
G01R33/09
Foreign References:
| CN106772147A | 2017-05-31 | |||
| CN102707246A | 2012-10-03 | |||
| CN102129053A | 2011-07-20 | |||
| CN102830374A | 2012-12-19 | |||
| US20120053059A1 | 2012-03-01 | |||
| JP2007534340A | 2007-11-29 |
Attorney, Agent or Firm:
CHENGDU JIUDINGTIANYUAN INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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