Unmanned aerial vehicle mechanical arm-based crane metal structure detection device and method

Abstract

The invention discloses an unmanned aerial vehicle mechanical arm-based crane metal structure detection device and method and belongs to the field of crane metal structure damage recognition. The device comprises an unmanned aerial vehicle main body, a ground treatment device, a mechanical arm, a non-destructive detection device and a camera. The unmanned aerial vehicle main body is used for carrying the mechanical arm and the non-destructive detection device. A non-destructive detection probe carried by the mechanical arm above the unmanned aerial vehicle main body contacts with the metal structure surface and acquires a defect characteristic signal, the defect characteristic signal is transmitted to the non-destructive detection device main body through a cable and then is transmitted to the ground treatment device through a wireless communication link, the ground treatment device carries out time-domain and frequency-domain analysis and constructs defect signal identification feature vectors, and an Euclidean distance of the feature vector between the signal to be detected and a known defect signal is calculated to determine a degree of approximation so that a signal defect type is identified. The device and method realize automatic detection and identification of defect features such as cracks, corrosion and holes on the metal structure surface and subsurface.

Description

technical field [0001] The invention relates to the professional field of safety and energy saving of electromechanical special equipment, and in particular to a crane metal structure detection device and method based on a robotic arm of an unmanned aerial vehicle. Background technique [0002] During the long-term use of the metal structure of the crane, due to load, fatigue and corrosion effects, material aging and lack of timely maintenance, damage accumulation and resistance decline will inevitably occur, which will affect the bearing capacity and service life of the structure. In the worst case, accidents can occur suddenly. In order to prevent accidents, it is necessary to detect, evaluate, identify and control the damage of the metal structure of the crane in use. [0003] The inspection of structural parts of large cranes belongs to high-altitude operations, and the site is often accompanied by harsh environments such as high temperature and strong wind. For large ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a UAV device and detection method for detecting defects on the surface and subsurface of crane metal structures, so as to solve the problem of using UAVs equipped with visual sensors to detect dust, oil stains, and paint on the surface of crane structures in the prior art. The technical problem that its detection effect is greatly reduced when peeling off

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