Standard fluctuating magnetic field reproducing device and method

A magnetic field and standard technology, applied in the field of standard fluctuating magnetic field reproduction devices, can solve the problem of inability to meet the requirements of reproducing such standard magnetic fields, and achieve the effect of reducing power consumption
CN103064048AActive Publication Date: 2013-04-24710TH 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
2013-04-24

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Abstract

The invention discloses a standard fluctuating magnetic field reproducing device and a method. The device comprises a moving axis type fluctuating magnetic field coil device and a fluctuating magnetic field exciting device, wherein the moving axis type fluctuating magnetic field coil device comprises a magnetic axis detector, a fluctuating magnetic field coil body and a magnetic axis adjusting table, the fluctuating magnetic field coil body is of a tricyclic three-route winding structure which is axisymmetric, and the fluctuating magnetic field exciting device comprises a random waveform generator, a linear power amplifier, a signal conditioning unit, a current precision measurement unit and a control software. The fluctuating magnetic field exciting device is capable of outputting signals which are stable in amplitude and continuous in frequency change under the situation of load impedance change by means of the current measuring and feedback control technology. Magnetic signals reproduced by the device are composed of constant magnetic field components and alternating magnetic field components, magnetic field amplitudes are stabilized within the range of 20 microteslas and 100 microteslas and do not change along with frequency change, and magnetic field frequencies can change continuously within the range of 0.1 hertz and 1 kilohertz.
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Description

technical field

[0001] The invention relates to a magnetic field reappearance device and method, in particular to a standard fluctuating magnetic field reappearance device and method. Background technique

[0002] Traditional magnetic field reproducing devices are generally divided into two types, constant magnetic field reproducing devices and alternating magnetic field reproducing devices. The constant magnetic field reproduction device is used to reproduce the required constant magnetic field, and the alternating magnetic field reproduction device is used to reproduce the required alternating magnetic field. The two types of devices are independent of each other and do not interact with each other.

[0003] At present, optical pump magnetometers and proton magnetometers need to evaluate their ability to respond to changes in the magnetic field under a standard magnetic field. The magnetic field working range of this type of magnetometer is generally between 20 μT and 100 ...

Claims

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