Transient electromagnetic detection apparatus and method of eliminating inductive disturbance

A detection device and transient electromagnetic technology, which is applied in the field of transient electromagnetic exploration, can solve the problems of detection blind spots, aggravated distortion, poor resolution and accuracy, etc., to eliminate the influence of coil mutual inductance, reduce the influence of mutual inductance, and enhance the magnetic field radiation effect

Pending Publication Date: 2018-05-08
ANHUI HUIZHOU GEOLOGY SECURITY INST
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the influence of coil inductance interference often causes the transient electromagnetic measurement signal to be distorted and distorted, especially the early sig

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transient electromagnetic detection apparatus and method of eliminating inductive disturbance
  • Transient electromagnetic detection apparatus and method of eliminating inductive disturbance
  • Transient electromagnetic detection apparatus and method of eliminating inductive disturbance

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] Such as figure 1 As shown, the transient electromagnetic detection device includes a coil device 1 and a frame carrier 2.

[0043] The coil device 1 includes a dual transmitting coil 3, a receiving coil 4, and a coil holder 5; the dual transmitting coil 3 is composed of two first transmitting coils 31 and a second transmitting coil 32 that are parallel to each other, share a central axis, and are separated by a certain distance d; The winding sequence and the number of turns of the first transmitting coil 31 and the second transmitting coil 32 can be the same or different, and can be connected in series or in parallel, as long as it is ensured that the center of each coil can be reversed at any time during the power supply period. The magnetic field is sufficient; the receiving coil 4 is located between the dual transmitting coils 3, which can be located in the middle or non-intermediate position of the dual transmitting coils 3, by debugging the receivin...

Example Embodiment

[0053] Example 2

[0054] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the dual transmitting coil 3 uses two first transmitting coils 31 and second transmitting coils 32 of different sizes. For the processing and assembly of the coils, The geometric accuracy requirements are loose and easy to implement.

Example Embodiment

[0055] Example 3

[0056] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the dual transmitting coil 3 in this embodiment adopts two non-concentric first transmitting coil 31 and second transmitting coil 32. For the processing of the coil, The geometric accuracy requirements of assembly are loose and easy to realize.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a transient electromagnetic detection apparatus and a method of eliminating inductive disturbance. The transient electromagnetic detection apparatus includes a coil device and aframework carrier, wherein the coil device includes dual transmission coils, receiving coils and a coil fixing mount; the dual transmission coils include first and second transmission coils which areparallel to each other, are not in the same plane and can generate counter magnetic fields at the center of the respective coil at any power-on moment; the receiving coils are arranged between the dual transmission coils, and for the distance, the constraint is that earlier signals are not beyond the amplitude; a rotation shaft which is parallel to the dual transmission coils and can drive the coil device to overturn is arranged on the coil fixing mount; and a nonmetal handle is arranged on the rotation shaft. The method of eliminating inductive disturbance measures the signals before and after 180DEG overturning of the coil device at the same position point and performs difference processing, by enabling the transmission coils in the detection apparatus to approach the area to be detected and enabling the normal of the transmission coils to be perpendicular to the area to be detected. The method of eliminating inductive disturbance enables earlier signals not to be beyond amplitude,and can capture whole course secondary field signals by eliminating inductive disturbance and enhance the distinguishing result.

Description

technical field [0001] The invention relates to the technical field of transient electromagnetic exploration, in particular to a transient electromagnetic detection device based on double transmitting coils and an application method for eliminating inductive interference. Background technique [0002] Transient electromagnetic method has developed into a relatively mature geophysical prospecting method, which can be widely used in resource exploration, geological prospecting in mining, water conservancy, transportation and other fields. In recent years, its application in shallow fine prospecting has gradually become a hot spot. In order to improve lateral resolution and construction convenience, multi-turn small loop devices are often used. However, because the coil is a non-pure resistive load, this will lead to: affected by the inductive reactance of the transmitting coil, the excitation current is not an ideal step waveform, and there is a certain off-time. For the conve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01V3/10
CPCG01V3/10
Inventor 倪圣军刘惠洲吴昭戚俊胡雄武张立好胡斌臧伟王奇
Owner ANHUI HUIZHOU GEOLOGY SECURITY INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap