Device for generating double-uniformity-area magnetic field and correction method for magnetometer correction

A technology for generating devices and magnetometers, applied to measuring devices, instruments, measuring electrical variables, etc., can solve problems such as probe positioning errors
CN103885019AInactive Publication Date: 2014-06-25710TH RES INST OF CHINA SHIPBUILDING IND CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
710TH RES INST OF CHINA SHIPBUILDING IND CORP
Publication Date
2014-06-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device for generating a double-uniformity-area magnetic field and a correction method for magnetometer correction. The device comprises a sliding gradient magnetic field coil device and a gradient magnetic field excitation device, wherein the sliding gradient magnetic field coil device comprises a uniform solenoid, a torque-free solenoid, a sliding table and a base. The gradient magnetic field excitation device comprises a dual-output direct-current current source and two ampere meters, and can generate two uniform magnetic fields meeting gradient test requirements. The problem that positioning errors and position slight changes of a probe influence the correction result of gradient magnetometer correction when a traditional gradient magnetic field device is used in the correction process is solved. Magnetic output at any gradient can be generated, manufacturing is simple, and large-gradient distance measuring can be achieved.
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Description

technical field

[0001] The invention relates to the field of magnetometer calibration, in particular to a double-uniform zone type magnetic field generating device and a calibration method for magnetometer calibration. Background technique

[0002] At present, gradient magnetometers are calibrated by gradient magnetic field devices. Traditional gradient magnetic field devices generally use Helmholtz gradient magnetic field coils with opposite winding directions as magnetic field generators. The magnetic field generated by this device is a linear and continuous gradient magnetic field. When calibrating the magnetic induction intensity of a gradient magnetometer with high resolution, since the traditional gradient magnetic field device generates a linear and continuous gradient magnetic field, during calibration, the positioning error of the magnetic probe position and the slight change in the position of the magnetic probe during the calibration process will cause serious prob...

Claims

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