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Multi-gap transient magnetic field sensor

A magnetic field sensor, multi-gap technology, applied in the direction of the size/direction of the magnetic field, the casing of the measuring device, etc., can solve the problems of accurate measurement of the single-gap transient magnetic field sensor, etc., to facilitate assembly and application, reduce processing errors, and expand The effect of bandwidth

Active Publication Date: 2019-12-03
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the electric field in the measured magnetic field environment will interfere with the voltage signal on the induction coil, it brings difficulties to the accurate measurement of the single-gap transient magnetic field sensor measurement

Method used

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Embodiment Construction

[0039] In order to make the purpose of the invention, technical solutions and beneficial effects of this application more clear, the embodiments of this application will be described below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments and embodiments of this application The features in can be combined arbitrarily with each other.

[0040] see Figure 1 to Figure 12 The multi-gap transient magnetic field sensor of the embodiment of the present invention. like figure 1 and figure 2 As shown, the sensor 100 includes a housing and a cable assembly arranged in the housing, wherein the cable assembly includes a closed loop coil 820 surrounded by a flexible circuit board, and a coaxial cable 810, and the closed loop coil 820 is set in One end of the casing, while the coaxial cable 810 is electrically connected to the closed loop coil 820 and leads out to the other end of the casing.

[0041] Specifically, such...

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Abstract

The invention discloses a multi-gap transient magnetic field sensor. The sensor comprises a shell and a cable assembly arranged in the shell. The cable assembly comprises a closed annular coil definedby a flexible circuit board and a coaxial cable. The closed annular coil is arranged at one end of the shell, and the coaxial cable is electrically connected with the closed annular coil and is led out of the other end of the shell. The invention relates to the field of magnetic field sensors and provides a multi-gap transient magnetic field sensor, the problem of electric field signal interference can be overcome, the influence of an electric field on magnetic field measurement can be effectively reduced, meanwhile, a relatively high bandwidth can be obtained, and the sensor has a certain anti-radiation effect.

Description

technical field [0001] The invention relates to the field of magnetic field sensors, in particular to a multi-gap transient magnetic field sensor. Background technique [0002] Lightning, electrostatic discharge and other processes will generate a transient strong electromagnetic field, which will cause electromagnetic interference to the equipment and become a source of interference. With the rapid development of electronic technology and the rapid improvement of automation, the impact of transient strong electromagnetic environment cannot be ignored. Accurate measurement of transient strong electromagnetic environment is of great significance in environmental monitoring, evaluation research and electromagnetic compatibility design. The use of a multi-gap transient magnetic field sensor to detect the transient magnetic field can achieve accurate measurement of the unknown transient magnetic field. [0003] According to different physical laws or physical phenomena, such a...

Claims

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Application Information

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IPC IPC(8): G01R33/02G01R1/04
CPCG01R1/04G01R33/02
Inventor 孟萃姜云升
Owner TSINGHUA UNIV
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