Method and system for dynamically monitoring compaction times of asphalt pavement

Abstract

The invention discloses a method and a system for dynamically monitoring compaction times of an asphalt pavement. The method comprises the following steps: respectively acquiring video images and three-dimensional laser point cloud data in a rolling working area in real time by using camera equipment and laser point cloud equipment which are arranged on a paver; establishing a three-dimensional laser point cloud coordinate system with the coordinate origin dynamically changing, and recording the three-dimensional laser point cloud data in the three-dimensional laser point cloud coordinate system to obtain three-dimensional laser point cloud models at different moments; performing machine vision identification and tracking on the video image, and determining the action range of each road roller at different moments; and respectively fusing and superposing the video image and the laser point cloud model image at the same moment to obtain data point coordinates in the action range of each road roller at different moments, and counting the occurrence times of each coordinate point in the three-dimensional laser point cloud model in the working range of the road roller to obtain the compaction times of each coordinate point. According to the invention, the dynamic monitoring of the rolling construction condition can be realized.

Description

technical field [0001] The invention relates to the field of road engineering construction quality monitoring and detection, in particular to a method and system for dynamically monitoring the number of compaction passes of asphalt pavement. Background technique [0002] Common asphalt concrete is a typical temperature-sensitive material, and its compaction operation at different temperatures will lead to different structural characteristics, resulting in different strength and fatigue properties. During the construction of asphalt pavement, road rollers need to be used for rolling operations, and the number of compactions under certain temperature conditions is an important indicator to ensure the compactness of asphalt pavement, which directly affects the performance and performance of asphalt pavement structures during operation. durability. At present, it is still difficult to determine the number of rolling times for the road roller in the specific construction. It mai...

AI Technical Summary

Problems solved by technology

At this stage, the detection or monitoring technology for the number of times of asphalt pavement rolling mainly relies on the collection and tracking of the position information of the road roller. However, in the case of weak or no signal such as GPS, there may be obvious position deviation, which directly leads to rolling. The statistical error of the number of passes affects the rolling quality of asphalt pavement

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