Electronic magnetometer and magnetic field measuring method

A magnetometer and electronic technology, which is applied in the fields of magnetic field measurement by electromagnetic devices, radio wave measurement system, and the size/direction of the magnetic field, and can solve problems such as the application of the Gunn effect

Active Publication Date: 2016-05-11
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Based on this principle, we have invented an electronic magnetometer that can measure the magnetic field, but the Gunn effect has not been applied to the magnetometer in practice.

Method used

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  • Electronic magnetometer and magnetic field measuring method
  • Electronic magnetometer and magnetic field measuring method
  • Electronic magnetometer and magnetic field measuring method

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] see figure 1 , an electronic magnetometer provided by the present invention includes: a magnetic sensor 110 , a circuit processing module 120 and a processor module 130 .

[0024] The magnetic sensor 110 is composed of a Gunn diode 111 with a magnetic shield and a Gunn diode 112 without a magnetic shield. The Gunn diode 111 with a magnetic shield generates an induced high-frequency oscillating current in a shielded magnetic field environment. , recorded as the first high-frequency oscillating current, and the first high-frequency oscillating current is output to the circuit processing module 120, and the Gunn diode 112 without magnetic shielding is used for inductive high-frequency oscillation in the ambient magnetic field. an oscillating current, denoted as a second high-frequency oscillating current, and outputting the secon...

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Abstract

The invention provides an electronic magnetometer and a magnetic field measuring method. The magnetic field measuring method comprises: different induction high frequency oscillation currents are generated through a magnetic field in the environment having a Gunn diode with magnetic shielding and a magnetic field in the environment having a Gunn diode without magnetic shielding; and making a comparison by setting a circuit in the shielded Gunn diode high frequency current and in the unshielded Gunn diode high frequency oscillation current, the difference on the frequency between the two currents has proportional relation with the size of the magnetic field so that the size of the magnetic field can be obtained.

Description

technical field [0001] The invention relates to the technical field of geomagnetic field measurement, in particular to an electronic magnetometer and a magnetic field measurement method. Background technique [0002] Magnetic field is the basic property of celestial bodies in the universe. The geomagnetic field is the magnetic field of the earth. The strength of the geomagnetic field at any point around the earth is a vector with a certain size and direction, and it is generally believed that the strength of the magnetic field at any point around the earth is different. From the perspective of the mathematical model, the Earth's magnetic field satisfies the Laplace equation. Therefore, as long as the Earth's magnetic field is observed at several locations, and then solved using the Laplace equation, the Earth's surface, especially any space within 1000km from the Earth, can be obtained. A little magnetic field. [0003] At present, the general-purpose high-sensitivity magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/06G01V3/40
CPCG01R33/06G01V3/40G01R33/0076G01R33/028G01R23/10
Inventor 杜爱民曹馨唐衡赵琳李琼冯晓孙树全季伟单世鹏李翠红
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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