Vector magnetic field stabilization system based on SQUID (Superconducting Quantum Interference Device) three-axis magnetometer

A technology of vector magnetic field and stable system, which is applied in the measurement of magnetic variables, the magnitude/direction of the magnetic field, and the use of superconducting devices for magnetic field measurement. Effect

Inactive Publication Date: 2019-02-01
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of vector magnetic field stabilization system based on SQUID three-axis magnetometer, for solving each vector field instability in the prior art, and the problem of low magnetic field sensitivity

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  • Vector magnetic field stabilization system based on SQUID (Superconducting Quantum Interference Device) three-axis magnetometer
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  • Vector magnetic field stabilization system based on SQUID (Superconducting Quantum Interference Device) three-axis magnetometer

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[0045] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0046] see Figure 1 to Figure 5 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...

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Abstract

The invention provides a vector magnetic field stabilization system based on a SQUID (Superconducting Quantum Interference Device) three-axis magnetometer. The system comprises a SQUID three-axis magnetometer, a SQUID read-out module, a feedback module and a three-axis compensation coil, wherein the SQUID three-axis magnetometer is arranged in the three-axis compensation coil for detecting three axial magnetic fields; the SQUID read-out module reads out a signal detected by the SQUID three-axis magnetometer; the feedback module feeds back the detection signal of the SQUID three-axis magnetometer to the corresponding three-axis compensation coil; and the three-axis compensation coil generates a compensation magnetic field opposite to environment magnetic field fluctuation; and the SQUID three-axis magnetometer is correspondingly arranged with three axial directions of the three-axis compensation coil. By use of the system, the SQUID three-axis module is used as a magnetic detector to carry out magnetic field stabilization, a more comprehensive (total field and each vector field) magnetic field stabilization effect can be obtained, sensitivity is high, and bandwidth is high. The system can be applied to an earth magnetic field or a zero magnetic field environment, and has a large magnetic field application range.

Description

technical field [0001] The invention relates to the field of magnetic field detection, in particular to a vector magnetic field stabilization system based on a SQUID three-axis magnetometer. Background technique [0002] The magnetic sensor based on the superconducting quantum interference device (Superconducting Quantum Interference Device, SQUID) is the most sensitive magnetic detector known so far, and the sensitivity of the low-temperature superconducting SQUID can reach 1fT (1fT=10 -15 Tesla) level, the high-temperature superconducting SQUID sensitivity can also reach 10 Fett level, is an important high-end application magnetic sensor, widely used in biomedical, geophysical detection, and basic research and other fields. SQUID magnetic sensor is an important magnetic sensor device in limit detection and scientific research, and has high scientific research and application value. [0003] In the field of magnetic reference metrology, in order to accurately calibrate the...

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Application Information

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IPC IPC(8): G01R33/035
CPCG01R33/0356
Inventor 邱隆清董丙元王永良张国峰
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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