Equipment for extremely-low-frequency electromagnetic disturbance observation

The invention discloses equipment for extremely-low-frequency electromagnetic disturbance observation. The equipment comprises an electromagnetic receiver, a magnetic field sensor and an electrode, wherein the magnetic field sensor and the electrode are electrically connected with the electromagneti...

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Bibliographic Details
Main Authors CHEN XIAOJIAN, ZHAO ZONGJIE, LIU JIAN, SUN GANG, YANG YANJUN
Format Patent
LanguageChinese
English
Published 30.05.2023
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:The invention discloses equipment for extremely-low-frequency electromagnetic disturbance observation. The equipment comprises an electromagnetic receiver, a magnetic field sensor and an electrode, wherein the magnetic field sensor and the electrode are electrically connected with the electromagnetic receiver; the magnetic field sensor comprises two groups of induction coils wound on a magnetic core assembly, the outputs of the two groups of induction coils and a center tap are electrically connected with a chopping amplification circuit respectively, the output end of the chopping amplification circuit is electrically connected with an amplification circuit, the output end of the amplification circuit is electrically connected with a demodulation circuit, and the output end of the demodulation circuit is electrically connected with a filter circuit. According to the equipment for extremely-low-frequency electromagnetic disturbance observation, the working frequency band ranges from 0.001 Hz to 20 Hz, the req
Bibliography:Application Number: CN202211608958