Inductive hollow coil device and magnetic induction system

By designing an inductive hollow coil device and a differential amplifier circuit, the problems of sensor attitude instability and multi-component survey in electromagnetic exploration were solved, and multi-component observation with high sensitivity and strong anti-interference was achieved.

CN115148472BActive Publication Date: 2026-03-31香港中文大学(深圳)城市地下空间及能源研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-13
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

In existing technologies, the unstable attitude of magnetic receiver sensors in electromagnetic exploration leads to large measurement errors, and existing equipment is difficult to simultaneously achieve strong anti-interference capabilities and multi-component exploration.

Method used

Design an inductive hollow coil device, which uses X-axis and Y-axis supports to fix and connect coils in series, and combines differential amplification and magnetic negative feedback circuits to realize component observation in the X-axis and Y-axis directions, thereby enhancing anti-interference capability and improving sensitivity.

Benefits of technology

While enabling multi-component observation, it also improved the sensitivity and anti-interference ability of electromagnetic exploration and reduced the error of the exploration results.

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Abstract

An inductive hollow coil device and a magnetic induction system, comprising a first X-axis support and a second X-axis support, a first Y-axis support and a second Y-axis support, a first X-axis coil and a second X-axis coil, a first Y-axis coil and a second Y-axis coil. By using the first X-axis support and the second X-axis support, the first X-axis coil and the second X-axis coil are fixed and connected in series respectively; by using the first Y-axis support and the second Y-axis support, the first Y-axis coil and the second Y-axis coil are fixed and connected in series respectively. The first X-axis coil and the second X-axis coil are used to generate induced current in the X-axis direction, and the first Y-axis coil and the second Y-axis coil are used to generate induced current in the Y-axis direction, so that the observation of the X-axis and Y-axis direction components can be realized, and the anti-interference ability during exploration can be enhanced by using two coils on a single axial component. At the same time, the coil is an inductive hollow structure, which does not set a magnetic core, and the mutual influence between the coils is smaller.
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Citation Information

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