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Magnetoresistive sensor

A magnetoresistive sensor and sensor technology, which is applied to instruments, measuring magnetic variables, measuring devices, etc., can solve the problems of inability to detect magnetic flux, limit the application range of anisotropic magnetoresistive sensors, etc., and achieve the effect of expanding the scope of use

Inactive Publication Date: 2018-12-11
SENODIA TECH (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the anisotropic magnetoresistive sensor in the prior art can only detect the magnetic flux perpendicular to the plane of the device, but cannot detect the magnetic flux parallel to the plane of the device, thus limiting the application range of the anisotropic magnetoresistive sensor

Method used

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0057] An embodiment of the pre...

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Abstract

The embodiment of the invention discloses a magnetoresistive sensor. A first wheatstone bridge circuit and a second wheatstone bridge circuit in the magnetoresistive sensor can measure magnetic flux corresponding to a magnetic field in a first direction and a second direction. A third wheatstone bridge circuit can measure the magnetic flux corresponding to the magnetic field in the third direction, so that the magnetoresistive sensor provided by the embodiment of the invention can be used for measuring and detecting the magnetic flux perpendicular to the plane of the substrate. The magnetic flux parallel to the plane of the substrate can be detected, so that the application range of anisotropic magnetoresistive sensors of various directions is expanded.

Description

technical field [0001] The invention relates to the technical field of anisotropic magnetoresistance sensors, in particular to a magnetoresistance sensor. Background technique [0002] Anisotropic magnetoresistance (AMR, Anisotropic Magnetoresistance) sensor is a new type of magnetoresistance effect sensor in modern industry, and it is becoming more and more important in electronic compass applications. In addition to anisotropic magnetoresistive sensors, magnetic sensors currently include Hall effect sensors, giant magnetoresistance (GMR) sensors, tunnel magnetoresistive sensors, etc., but due to the high sensitivity of anisotropic magnetoresistive sensors and relatively Mature and more widely used. [0003] At present, the anisotropic magnetoresistive sensor in the prior art can only detect the magnetic flux perpendicular to the plane of the device, but cannot detect the magnetic flux parallel to the plane of the device, thus limiting the application range of the anisotro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/09
CPCG01R33/096
Inventor 邹波
Owner SENODIA TECH (SHANGHAI) CO LTD
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