Magnetic detecting device

A technology of magnetic detection device and magnetic field, applied in measurement device, measurement of magnetic variable, magnetic field offset compensation and other directions, can solve the problems of sensitivity deviation, increase of coercive force, easy residual magnetization, etc.
CN104635184AActive Publication Date: 2015-05-20ALPS ALPINE CO LTD
8 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ALPS ALPINE CO LTD
Publication Date
2015-05-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A magnetic field component in a Z direction is guided by a magnetic field guide layer and applied to a magnetic sensor in an X direction that is the same as a sensitivity axis direction thereof, and a detection output is obtained. A bridge circuit is formed with a plurality of magnetic sensors and configured such that an output is not provided for a magnetic field component in the X direction. However, when an external magnetic field in the X direction is drawn to the magnetic field guide layer, variation of sensitivity for the X direction may occur. Thus, soft magnetic characteristics of a first portion of the magnetic field guide layer are deteriorated to decrease the magnetic permeability of the first portion.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a magnetic detection device that detects a magnetic field component in a direction perpendicular to its sensitivity axis by a magnetic sensor such as a GMR element. Background technique

[0002] In the magnetic detection devices described in Patent Document 1 and Patent Document 2, a bridge circuit is composed of a magnetoresistance effect element whose sensitivity axis is oriented in the horizontal direction, and in the magnetoresistance effect element, a magnetic body formed of a soft magnetic material extending in the vertical direction is used. set against each other. The magnetic field component in the vertical direction is induced by the magnetic body, and the horizontal direction component in the leakage flux from the lower end portion of the magnetic body is detected by the magnetoresistance effect element. Thereby, the strength of the magnetic field in the vertical direction can be detected.

[0003] In this ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More