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Thin film 3 axis fluxgate and the implementation method thereof

A fluxgate and thin-film technology, applied in the direction of the magnitude/direction of the magnetic field, magnetic field measurement using the principle of flux control, three-component magnetometer, etc., can solve the problems of poor magnetic reversal of magnets, etc.

Inactive Publication Date: 2009-05-06
MICROGATE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor magnetic properties of the magnet and the poor magnetic reversal of the magnet, the electrical properties can only resemble a simple transformer

Method used

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  • Thin film 3 axis fluxgate and the implementation method thereof
  • Thin film 3 axis fluxgate and the implementation method thereof
  • Thin film 3 axis fluxgate and the implementation method thereof

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Embodiment Construction

[0028] best practice

[0029] The thin-film three-axis fluxgate includes three strip-type thin-film fluxgates arranged in three directions, thereby detecting the horizontal and vertical components of the magnetic field, and detecting the direction of the magnetic field and the direction of the earth's surface based on the detection results.

[0030] According to the thin film three-axis fluxgate, a fluxgate for detecting a magnetic field component in each direction is manufactured in a thin film form. Specifically, a fluxgate for detecting the vertical component of a magnetic field is fabricated by using a plurality of magnetic thin films on which a driving coil and a pickup coil are wound, thereby producing a fluxgate that can be conveniently installed in small electronic devices such as mobile phones Fluxgate of planar type.

[0031]The present invention will now be described in detail with reference to the accompanying drawings. First, configuration methods and operating ...

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Abstract

There is provided a thin film tri-gate fluxgate for detecting a component of a magnetic field in directions of three axes, the thin film tri-gate fluxgate comprising: two first thin film fluxgates of a bar-type disposed on a plane for detecting horizontal components of the magnetic field in direction of dual axis; and a plurality of second thin film fluxgates for detecting a vertical component of the magnetic field, wherein each of the first thin film fluxgates and the plurality of the second thin film fluxgates comprises a drive coil for applying a power, a pickup coil for detecting a voltage and, a magnetic thin film, and wherein the plurality of the second thin film fluxgates are substantially perpendicular to each of the first thin film fluxgates wherein a length of the magnetic thin film of each of the plurality of the second thin film fluxgates is shorter than that of each of the two first thin film fluxgates, and wherein two end portions of each of the plurality of the second thin film fluxgates is wider than a center portion thereof.

Description

technical field [0001] The present invention relates to a thin-film fluxgate for measuring the application direction of an external magnetic field, and more particularly, to a thin-film three-axis fluxgate for measuring horizontal biaxial components and vertical components of a magnetic field. Background technique [0002] A fluxgate is a magnetic field sensor used to detect ferrous buried objects such as landmines and for electronic compasses. [0003] The basic structure of a fluxgate consists of a ferromagnet, a drive coil surrounding the ferromagnet, a separate pickup coil, an AC power source for applying an alternating current to the drive coil, and, for example, figure 1 and image 3 A voltmeter is shown for sensing the voltage induced by the pickup coil. [0004] The principle of operation of the fluxgate will be described below. When an AC current is applied to a drive coil wound on a ferromagnetic body, a time-varying induced magnetic field is generated around th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L43/00G01R33/04
CPCG01R33/04G01R33/0206G01R33/02
Inventor 张汉声
Owner MICROGATE
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