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Road geometric line type and road surface three-dimensional structure reconstruction system and reconstruction method

A technology of three-dimensional structure and reconstruction system, which is applied in the direction of radio wave measurement system, satellite radio beacon positioning system, image data processing, etc., can solve the problems of insufficient maintenance and repair guidance, increase recognition, realize automation, improve Effects of Accuracy and Stability

Active Publication Date: 2020-09-18
上海城建城市运营(集团)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient guidance on maintenance and repair

Method used

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  • Road geometric line type and road surface three-dimensional structure reconstruction system and reconstruction method
  • Road geometric line type and road surface three-dimensional structure reconstruction system and reconstruction method
  • Road geometric line type and road surface three-dimensional structure reconstruction system and reconstruction method

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Embodiment 1

[0030] see figure 1 , this embodiment discloses a system for reconstruction of road geometry and road surface three-dimensional structure, which includes a longitudinal distance sensor, two line lasers Range finder, geometric measurement system, acquisition card and central processing computer system.

[0031] The longitudinal distance sensor records the vehicle mileage. The data collected by the longitudinal distance sensor can be shared with the laser scanning system for controlling the scanning interval.

[0032] The line laser distance meter adopts a non-contact 3D line laser distance scanner. The line laser sensor collects the elevation information of a cross section every 20cm. The line laser rangefinder can detect the section elevation within the lateral width of 4 meters of the road surface, the number of sampling points is 1536, and the resolution of the elevation direction is 0.1mm. The line laser rangefinder scans the macro texture of the road surface to obtain ...

Embodiment 2

[0038] This embodiment discloses a system for reconstructing basic road geometry and road surface three-dimensional structure, including a longitudinal distance sensor, two line laser range finders, a geometric measurement system, an acquisition card and a central processing computer system.

[0039] The longitudinal distance sensor records the vehicle mileage.

[0040] The line laser distance meter adopts a non-contact 3D line laser distance scanner. The line laser sensor collects the elevation information of a cross section every 20cm. The number of sampling points on each cross-section is not less than 1500. The line laser rangefinder scans the macro texture of the road surface to obtain point cloud data reflecting the elevation information of the cross-section of the road surface.

[0041] The geometric measurement system is integrated with GPS and gyroscope. The GPS external antenna is installed at the central axis of the vehicle. The two line laser range finders are ...

Embodiment 3

[0044] see figure 2 , this embodiment discloses a method for reconstructing road geometry and road surface three-dimensional structure using the system described in Embodiment 2, including the following steps:

[0045] 1) Deploy the detection system on the vehicle.

[0046] 2) Start the vehicle and detection system. While the vehicle is moving, the longitudinal distance measuring sensor measures the accumulated mileage. The line laser scanner acquires the elevation information of the road surface cross-section at equal intervals. The geometric system collects the geographic location coordinate information and vehicle attitude information under the vehicle driving path in real time.

[0047] 3) see image 3, transform the latitude and longitude coordinates under the driving track into spatial Cartesian coordinates. The plane Cartesian coordinates converted from GPS latitude and longitude during sampling are (X0, Y0, Z0). The spatial coordinates of the i-th point on the i...

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Abstract

The invention provides a road geometric line type and road surface three-dimensional structure reconstruction system and reconstruction method. The system comprises a longitudinal distance sensor, twoline laser range finders, a geometric measurement system, an acquisition card and a central processing computer system. And the longitudinal distance sensor records the driving mileage of the vehicle. And the line laser range finder acquires elevation information of the cross section of the road surface at equal intervals in the vehicle traveling process. And the geometric measurement system acquires geographic coordinate information and vehicle attitude information of the position of the vehicle in real time. And the central processing computer system is used for establishing a three-dimensional model of the road surface. The reconstruction method comprises the steps of converting coordinates, forming a road surface point cloud, establishing a road surface three-dimensional model, identifying three-dimensional diseases and the like. According to the system, the three-dimensional model of the pavement is regenerated through a pavement three-dimensional reconstruction technology, and different depth information is distinguished by utilizing colors, so that the identification degree of the three-dimensional deformation disease of the pavement is increased.

Description

technical field [0001] The invention relates to the technical field of road detection, in particular to a method for detecting and locating three-dimensional road surface diseases. Background technique [0002] The three-dimensional deformation of the road surface not only affects the comfort of driving, but even has a great impact on the safety of driving. For example, potholes on the road surface may cause tire bursts of high-speed vehicles, and deep ruts may cause vehicle instability. Therefore, fast 1. Accurate detection of three-dimensional pavement diseases is the premise and foundation of disease control and an important guarantee for road safety operation. [0003] In the prior art, two-dimensional image analysis and line laser rangefinder detection methods are usually used to identify road surface defects. However, the pavement defect recognition technology based on two-dimensional images is affected by noise factors such as road shadows and oil pollution, and the ...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/06G01S17/08G01S19/41G01S19/42G06T17/00G06T15/50
CPCG01B11/002G01B11/0608G01S17/08G01S19/41G01S19/42G06T17/00G06T15/50
Inventor 彭崇梅韦学健杨昆操莉张枢文张香马明雷
Owner 上海城建城市运营(集团)有限公司