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Airport cement pavement FOD risk evaluation method and device

A risk assessment and road surface technology, applied in image data processing, instruments, calculations, etc., can solve problems such as ungenerated substances, debris, or object prediction, achieve high practical value and promotion value, increase confidence, and avoid one-sided effect

Pending Publication Date: 2021-05-07
成都圭目机器人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen that the above-mentioned technologies all detect the FOD that has been generated, and cannot predict the ungenerated substances, debris or objects, and crack spalling materials are an important source of FOD in cement concrete pavement

Method used

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  • Airport cement pavement FOD risk evaluation method and device
  • Airport cement pavement FOD risk evaluation method and device

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Embodiment

[0034] Such as Figure 1 to Figure 2 As shown, this embodiment provides an airport cement pavement FOD risk assessment method and device, which includes a visible light camera that shoots vertically downward visible light images of cement pavement cracks, and uses a horizontal direction to detect and collect cement pavement. The three-dimensional ground-penetrating radar of the ground-penetrating radar image, and the readable storage medium connected with the visible light camera and the three-dimensional ground-penetrating radar, used to obtain the visible light image and the ground-penetrating radar image and carry out the FOD risk assessment of the airport cement pavement.

[0035] Specifically, the airport cement pavement FOD risk assessment method of the present embodiment includes the following steps:

[0036] The first step is to use image segmentation to extract the crack projection contour in the visible light image, and obtain the crack projection area S 1 ;

[003...

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Abstract

The invention discloses an airport cement pavement FOD risk evaluation method. The method comprises the steps: extracting a crack projection contour in a visible light image through image segmentation, and obtaining a crack projection region S1; extracting the depth h between the crack and the pavement surface and the projection contour S2 of the crack in the horizontal direction by using the horizontal, transverse and longitudinal three-dimensional views in the ground penetrating radar image of the three-dimensional ground penetrating radar; according to the detection position of the three-dimensional ground penetrating radar and the position of the image, the projection contour S2 of the crack in the horizontal direction is projected to the image where the crack projection area S1 is located; the minimum distance d between the projection contour S2 and the crack projection area S1 is obtained; and judging the FOD risk of the cement pavement of the airport by using the relationship between the depth h and the depth threshold value h1 and the depth threshold value h2 and the relationship between the minimum distance d and the profile minimum distance threshold value d1 and the profile minimum distance threshold value d2. Through the scheme, the method has the advantages of simple logic, reliable estimation and the like.

Description

technical field [0001] The invention relates to the technical field of airport pavement, in particular to an airport cement pavement FOD risk assessment method and device. Background technique [0002] FOD (Foreign Object Debris) refers to certain foreign substances, debris or objects that may damage the aircraft (the source of FOD at the airport includes not only foreign objects, but also the peeling materials of the pavement itself). Cement concrete pavements are affected by multiple factors such as construction technology level, maintenance level, and geological conditions. When internal near-horizontal cracks appear in the shallow surface layer, it is easy to cause the material above the cracks to peel off under the action of external force, thereby forming FOD. Especially for cracks and internal near-horizontal cracks at plate joints (the angle with the horizontal direction is less than 5°), the load transfer capacity is reduced due to the discontinuity of the pavement ...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/12G06T7/136
CPCG06T7/0004G06T7/12G06T7/136G06T2207/30132Y02A90/10
Inventor 邓勇军张中杰杨睿刘斐李运胡冬平桂仲成
Owner 成都圭目机器人有限公司
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