Foldable unmanned aerial vehicle magnetic detection suspension extension rod device based on universal coupling

Abstract

The invention discloses a foldable unmanned aerial vehicle magnetic detection suspension extension rod device based on a universal coupling, which is used for connecting an unmanned aerial vehicle carrying platform and a magnetic sensor probe. The device comprises a connecting piece male head fixing seat fixedly connected below the unmanned aerial vehicle carrying platform; the connecting piece male head fixing seat is sequentially connected with a universal joint assembly, a traction rod, a switching angle scale and a counterweight structural member from top to bottom; the switching angle scale is adjustably and fixedly installed at the preset position of the traction rod and fixedly connected with a magnetic sensor probe clamp through the switching angle scale, the magnetic sensor probe clamp is provided with a magnetic sensor probe, so that the rotation angle of the magnetic sensor probe can be adjusted. According to the invention, tandem universal couplings are adopted to realize foldability, so that safe take-off and landing of the unmanned aerial vehicle magnetic detection system are guaranteed; the universal coupling is combined with the rigid rod, and is assisted by a proper counterweight structural member, so that the whole suspension device does not rotate or greatly swing in the flying process, and the operation attitude of the magnetic sensor probe is ensured to be within an effective range.

Description

technical field [0001] The invention relates to the field of UAV magnetic detection, and belongs to a rigid and foldable UAV magnetic measurement suspension rod device, which is mainly used for the suspension and azimuth angle maintenance of the magnetic sensor probe during the UAV magnetic detection operation. While avoiding the failure of the magnetic sensor, it can ensure the safe and smooth take-off and landing of the UAV. The device can be applied to the magnetic anomaly detection application field of the UAV platform. Background technique [0002] The UAV magnetic detector is equipped with a high-precision magnetometer on the UAV, and flies within a height of about 100m from the ground. It can be used in underground mineral exploration, unexploded bomb detection, and infrastructure detection. UAV magnetic detection effectively overcomes the problems of poor resolution of traditional manned airborne magnetic survey and low coverage of ground magnetic survey, and fills t...

AI Technical Summary

Problems solved by technology

[0006](1) The magnetic sensor probe is suspended by a semi-rigid plastic tube or cable. During the flight operation of the drone, on the one hand, it is easy to cause the magnetic sensor to rotate around the vertical axis. The rotation of the drone or the large-angle swing in the horizontal direction may cause the magnetic sensor probe to fail to work normally; Large, in addition to the possibility of losing the lock and reducing the efficiency of flight operations, it may even lead to excessive correction or resonance in the process of automatic attitude correction of the UAV, and there is a potential crash hazard

[0007](2) The method of hard-connecting the UAV and the magnetic sensor probe through the suspension of the rigid rod is not convenient for the aircraft to take off and land; The method of human-machine and magnetic sensor probe, due to the long extension distance of the rigid rod, it is difficult for the drone to balance the load weight, which is potentially dangerous

[0008](3) The installation and fixing angle of the magnetic sensor probe on the suspension rod cannot be adjusted arbitrarily according to the work area and task requirements, and the applicability and flexibility are poor

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