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Device and method for measuring vertical component of magnetic induction intensity by optical pump

A technology of magnetic induction intensity and vertical component, applied in the field of magnetic signal measurement, achieves the effects of low cost, convenient operation and simple structure combination

Inactive Publication Date: 2011-12-28
710TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the most commonly used vector magnetic sensors are basically based on the fluxgate principle, and their resolution is about 2nT.

Method used

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  • Device and method for measuring vertical component of magnetic induction intensity by optical pump
  • Device and method for measuring vertical component of magnetic induction intensity by optical pump
  • Device and method for measuring vertical component of magnetic induction intensity by optical pump

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Embodiment Construction

[0013] Such as figure 1 As shown, the structure of the present invention is: a device for measuring the vertical component of magnetic induction intensity, including an optical pump 2, a coil system 3 installed on a horizontal turntable 1, and a coil system 3 connected to a precision current source 4, through which the current source 4 gives The coil system 3 of the optical pump 2 is powered, and the probe of the optical pump 2 rotates in the uniform area 5 of the coil system. The coil system 3 adopts a square Helmhertz coil, a circular Helmhertz coil or a Galette coil. Other forms of field coils may also be used.

[0014] The working principle of the invention is as follows: the optical pump is used for high-sensitivity magnetic induction measurement, and the coil system is used for magnetic field compensation. To achieve high-sensitivity measurement of the vertical component, it is only necessary to compensate the horizontal component to the minimum value through the compe...

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Abstract

A device and method for measuring the vertical component of magnetic induction intensity with an optical pump. The optical pump is used for high-sensitivity magnetic induction intensity measurement, and the coil system is used for magnetic field compensation. To achieve high-sensitivity measurement of the vertical component, it is only necessary to compensate the horizontal component to zero through the compensation coil and measure the output of the optical pump. The invention has the advantages of high sensitivity, low cost, simple structure combination and convenient operation. The method of measuring the vertical component of the magnetic induction intensity by the optical pump single coil compensation method can achieve a resolution better than 0.1nT.

Description

technical field [0001] The invention belongs to the field of magnetic signal measurement, and in particular relates to a device and a measurement method for measuring the vertical component of magnetic induction intensity by using an optical pump single coil compensation method. Background technique [0002] Magnetic sensors are widely used in oil exploration, aerospace, geological exploration, underwater weapons and other fields, and are mainly used to detect ferromagnetic objects and measure magnetic fields. Whether it is the detection and positioning of magnetic sources or the high-precision measurement of the geomagnetic field, the requirements for resolution are getting higher and higher. The higher the resolution, the more accurate the detection and positioning, and the more precise the measurement. However, the most commonly used vector magnetic sensors are basically based on the fluxgate principle, and their resolution is about 2nT. However, the resolution of the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/02
Inventor 陈正想李伟王秀石超卢俊杰
Owner 710TH RES INST OF CHINA SHIPBUILDING IND CORP
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