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Portable giant magnetoresistance magnetometer

A technology of giant magnetoresistance and magnetometer, applied in the field of portable giant magnetoresistance magnetometer, can solve the problems of low sensitivity, inconvenient space magnetic field measurement, large volume, etc., and achieve the effect of reducing equipment cost

Inactive Publication Date: 2015-02-04
宜昌东方微磁科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing Hall-type, fluxgate-type and coil-type magnetometers not only have the problems of large volume and low sensitivity; but also have the problem of using industrial power supply, so it is inconvenient to measure the spatial magnetic field anytime and anywhere. measurement problem

Method used

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  • Portable giant magnetoresistance magnetometer
  • Portable giant magnetoresistance magnetometer

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 1 Shown is a portable giant magnetoresistance magnetometer, which includes a switch 1 connected to a mobile power supply 2;

[0019] The mobile power supply 2 is connected in parallel with the control device 3, the signal amplification circuit 5 and the giant magnetoresistive sensor 4;

[0020] The control device 3 is connected to a display device 6 .

[0021] The control device 3 is a single chip microcomputer and its peripheral circuits.

[0022] The mobile power source 2 is a battery.

[0023] The display device 6 is a liquid crystal display.

[0024] The mobile power supply 2 is firstly connected with the voltage stabilizing circuit 7 and then connected in parallel with the control device 3 , the signal amplifying circuit 5 and the giant magnetoresistive sensor 4 .

[0025] When adopting the above structure, its workflow is composed of figure 2 As shown, the voltage provided by the mobile power supply 2 supplies power to the control device 3, th...

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Abstract

A portable giant magnetoresistance magnetometer comprises a switch. The switch is connected with a mobile power supply; the mobile power supply is in parallel connection with a control device, a signal amplification circuit and a giant magnetoresistance sensor; and the control device is connected with a display device. By adopting the structure that the giant magnetoresistance sensor serves as a magnetic induction element and the mobile power supply is used for supplying power to the device, the magnetometer is convenient for people to carry on the basis of effectively reducing the size and weight of the device, and the portable giant magnetoresistance magnetometer is allowed to complete the measurement work of the space magnetic field anytime and anywhere.

Description

technical field [0001] The invention belongs to the field of electromagnetic equipment, in particular to a portable giant magnetoresistance magnetometer. Background technique [0002] A magnetometer is a device used to detect magnetic fields in space, and it has important applications in fields such as industry, agriculture, and national defense technology. At present, magnetometers are divided in principle, mainly including Hall effect magnetometer, fluxgate magnetometer and coil magnetometer. In 1988, French scientist Albert Fert and German scientist Peter Grunberg independently discovered the giant magnetoresistance effect (GMR). The giant magnetoresistance effect refers to the phenomenon that the resistivity of a magnetic material changes dramatically when there is an external magnetic field compared to when there is no external magnetic field. The sensitivity of giant magnetoresistive materials is high, which is two orders of magnitude higher than that of general Hall...

Claims

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Application Information

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IPC IPC(8): G01R33/09
Inventor 于晓东窦珂
Owner 宜昌东方微磁科技有限责任公司