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Dam surface crack intelligent identification and measurement device for unmanned aerial vehicle

A technology for surface cracks and measuring devices, which is applied to measuring devices, using optical devices, and optically testing flaws/defects.

Inactive Publication Date: 2020-04-10
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These detection methods need to arrange equipment, have many restrictions on use, and the implementation process is complicated, and still require staff to operate and control the whole process

Method used

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  • Dam surface crack intelligent identification and measurement device for unmanned aerial vehicle
  • Dam surface crack intelligent identification and measurement device for unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1—Detection of cracks on the overflow dam section of a concrete dam (or concrete face rockfill dam) project

[0033] Such as figure 1 As shown, in the dry season, the UAV patrols the designated dam section, and the crack intelligent identification measurement device is physically connected to the UAV, and the video is taken along with the inspection of the UAV, and the video image processor 4 in the crack intelligent identification measurement device automatically Identify surface cracks. After detecting the crack, drive the UAV to fly to the crack, automatically adjust the distance and angle of the UAV to the crack according to the occurrence of the crack, and automatically adjust the angle of the lens 2 to be parallel to the dam surface, take pictures of the crack, and use the built-in FC-DenseNet The network algorithm automatically outlines the shape of the crack and saves it to the crack image memory 5 . At the same time, the crack measurement device autom...

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Abstract

The invention discloses a dam surface crack intelligent identification and measurement device for an unmanned aerial vehicle. The device comprises a crack identification device, a crack measurement device, a crack positioning device, a storage and connection device and a comprehensive processor, wherein the crack recognition device can shoot a video along with inspection of the unmanned aerial vehicle, intelligently recognize a crack, capture a crack picture and draw the shape of the crack; the crack measuring device is used for measuring the width of a crack by utilizing a laser width gauge and generating a crack width table; and the crack positioning device is used for determining the coordinates of the crack. The intelligent crack recognition and measurement device can quickly detect the position of a dam surface crack, shoot a crack picture, measure the width of the crack and automatically generate a dam surface crack distribution diagram, so that the number of times of dam entering detection of engineers can be reduced, a large amount of manpower and time can be saved, and the crack recognition and measurement efficiency and precision can be improved.

Description

technical field [0001] The invention relates to the crack identification and measurement equipment technology on the dam surface, in particular to a device which can be used to intelligently identify cracks and automatically measure the width of the cracks. Background technique [0002] my country's water conservancy and hydropower projects are developing in the direction of larger scale and higher difficulty. Among high dams, concrete dams and concrete face rockfill dams account for a large proportion. However, limited by the characteristics of the large volume (area) of concrete, cracks are common in dams. The forms of cracks can be roughly divided into surface cracks and penetrating cracks. In engineering, surface cracks account for the vast majority, and some surface cracks may expand into deep cracks, and even penetrate the entire structure to form penetrating cracks. The appearance of cracks will not only reduce the anti-seepage capacity of the dam and affect the use...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01B11/02
CPCG01B11/02G01N21/8851G01N2021/8874G01N2021/8887
Inventor 李明超任秋兵司文
Owner TIANJIN UNIV
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