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Magnetic field measurement device based on giant magneto-impedance effect

A technology of magnetic field measurement and giant magneto-impedance, applied in measurement devices, measurement of magnetic variables, instruments, etc., can solve the problems of excessive volume, low sensitivity and resolution, and high power consumption

Inactive Publication Date: 2013-01-09
BEIJING MECHANICAL EQUIP INST
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic field measurement device based on the giant magneto-impedance effect, which solves the problems of low sensitivity and resolution, large volume, slow response speed and high power consumption of current similar devices

Method used

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  • Magnetic field measurement device based on giant magneto-impedance effect

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Embodiment Construction

[0011] A magnetic field measurement device based on the giant magneto-impedance effect, comprising: an excitation source 1, and a synchronous rectification signal generator 2, a detection head 3, a synchronous rectifier 4, and a servo controller 5. The magnetic field measuring element of the probe head is an amorphous wire with giant magneto-impedance effect; the excitation source adopts a CMOS NOT gate multivibrator; the synchronous rectifier adopts an analog switch.

[0012] The output end of the excitation source 1 is connected to the printed line of the input end of the detection head 3, the output end of the excitation source 1 is connected to the printed line of the input end of the synchronous rectification signal generator 2, and the output end of the synchronous rectification signal generator 2 is printed with the input end of the synchronous rectifier 4 Wire connection, the input end of synchronous rectifier 4 is connected to the printed line of the output end of dete...

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Abstract

The invention discloses a magnetic field measurement device based on giant magneto-impedance effect. The device comprises an excitation source (1), a synchronous rectification signal generator (2), a probe (3), a synchronous rectifier (4) and a servo controller (5), wherein the excitation source (1) is connected with the probe (3) through a printed wire and connected with the synchronous rectification signal generator (2) through a printed wire, the synchronous rectification signal generator (2) is connected with the synchronous rectifier (4) through a printed wire, the synchronous rectifier (4) is connected with the probe (3) through a printed wire and connected with the servo controller (5) through a printed wire, and the servo controller (5) is connected with the probe (3) through a printed wire. The magnetic field measurement device based on the giant magneto-impedance effect has the advantages of high sensitivity, resolution and response speed, small size, low power consumption, good temperature characteristic and high linearity.

Description

technical field [0001] The invention relates to a magnetic field measuring device, in particular to a magnetic field measuring device based on giant magneto-impedance effect. Background technique [0002] The measurement of weak magnetic fields has huge application requirements in the military, such as small satellites relying on the geomagnetic field for attitude determination and positioning, fish mine guidance relying on the magnetic field of ships, inertial navigation and geomagnetic composite navigation, magnetic detonation, intelligent minesweepers, high-speed Military fields such as the measurement of the rotational speed of rotating shells. With the development of technology, these applications generally require high sensitivity, high resolution, small size, fast response, low power consumption, and stable temperature characteristics for magnetic measurement devices. [0003] At present, the magnetic measurement devices used in the field of weak magnetic field measu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/09
Inventor 李建冬葛永强张文波聂光玮王雷
Owner BEIJING MECHANICAL EQUIP INST
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