Aeromagnetic survey device based on low-temperature superconductive SQUID

Abstract

The invention provides an aeromagnetic survey device based on a low-temperature superconductive SQUID. The aeromagnetic survey device comprises a data acquisition device, a power supply unit, a non-magnetic auxiliary system support, a Faraday cage, a reading circuit and attitude measurement module, a low-temperature superconductive SQUID sensor unit, a non-magnetic Dewar fixation barrel, a vibration absorption material, a non-magnetic device bottom support plate and vibration absorption components. The non-magnetic auxiliary system support and the non-magnetic Dewar fixation barrel are fixed to the non-magnetic device bottom support plate; the low-temperature superconductive SQUID sensor unit is arranged in the non-magnetic Dewar fixation barrel, and the vibration absorption material is filled between the low-temperature superconductive SQUID sensor unit and the non-magnetic Dewar fixation barrel; and the Faraday cage wraps the whole survey device. The aeromagnetic survey device based on the low-temperature superconductive SQUID can improve anti-interference capability of a low-temperature superconductive SQUID system on complicated electromagnetic environment outside a test field, thereby reducing high and low frequency mechanical vibration generated in the aeromagnetic survey process.

Description

technical field [0001] The invention relates to a magnetic measuring device, in particular to an airborne magnetic measuring device based on a low-temperature superconducting SQUID (Superconducting Quantum Interference Device, superconducting quantum interference device). Background technique [0002] Aeromagnetic survey (aeromagnetic survey) is the earliest, most mature and most used magnetic survey method in aeronautical geophysical prospecting methods. It installs an aeromagnetometer system in an aircraft or other aircraft to observe the total intensity T of the geomagnetic field or the anomaly of the total magnetic field△ T or its gradient, to find magnetic or magnetic-related ore bodies, to understand geological structures, magnetic mapping, urban and engineering stability and archaeological issues. According to different service fields, it is divided into regional structural mapping, oil and gas structural exploration, solid mineral exploration and other application ty...

AI Technical Summary

Problems solved by technology

Due to the complex electromagnetic environment in the external field, it is very easy for the SQUID system to enter an out-of-lock state, affecting the working state, resulting in a decrease in test performance, and even causing the device to fail to work normally.

[0007] (2) Due to the magnetic field test based on aviation platforms, such as unmanned aircraft, airships, hot air balloons, etc., high and low frequency mechanical shaking will be introduced during the test. This state will introduce motion noise during the low temperature superconducting SQUID magnetic test. It will affect the accuracy of magnetic field measurement, and in severe cases, it will also cause the device to fail to work normally

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