Pavement roughness measuring method and pavement roughness measuring device

A technology of road surface roughness and measurement methods, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as insufficient stability of results, and achieve stable results

Inactive Publication Date: 2017-01-04
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for measuring road surface roughness to solve the problem that the results of the road surface roughness measuring method in the prior art are not stable enough

Method used

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  • Pavement roughness measuring method and pavement roughness measuring device
  • Pavement roughness measuring method and pavement roughness measuring device
  • Pavement roughness measuring method and pavement roughness measuring device

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Experimental program
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specific Embodiment 1

[0047] Such as figure 1 As shown, the embodiment of the present invention provides a method for measuring road surface roughness, including:

[0048] Step S101, acquiring a road image;

[0049] Step S102: Perform grayscale processing on the road image to obtain a grayscale image of the road surface;

[0050] Step S103, performing two-dimensional sampling on the grayscale image to obtain two-dimensional sampling points of the grayscale image;

[0051] Step S104, acquiring gray data of the gray image;

[0052] Step S105, obtaining a three-dimensional grid image of the road image according to the two-dimensional sampling points and the gray data of the gray image;

[0053] Step S106: Obtain the road surface roughness.

[0054] The embodiment of the present invention is used to measure the roughness of cement concrete pavement. The method is used to measure the roughness of cement concrete pavement and the result is stable. During the measurement, outdoor work can be quickly sampled in the fi...

specific Embodiment 2

[0065] On the basis of any embodiment in the specific embodiment 1, the embodiment of the present invention does not limit the tools used in the measurement method to calculate the road surface roughness. Preferably, MATLAB software can be used, and the measurement method can be based on the MATLAB algorithm. . MATLAB can perform matrix operations, draw functions and data, implement algorithms, create user interfaces, and connect to programs in other programming languages. Its basic data unit is a matrix. Using MATLAB to solve problems is easier and faster than C, FORTRAN and other languages. MATLAB also provides support for C, FORTRAN, C++, and JAVA. When using the method provided by the embodiment of the present invention, each step needs to enter the corresponding program code in the matlab software command window. For example, in a practical application, a possible use scenario can be:

[0066] A. To read the road image, the MATLAB program code required is:

[0067] a=imread(...

specific Embodiment 3

[0089] Such as figure 2 As shown, the embodiment of the present invention provides a road surface roughness measurement device, including:

[0090] Road image acquisition module, used to acquire road images;

[0091] The gray-scale module is used to perform gray-scale processing on the road image to obtain the gray-scale image of the road surface;

[0092] The two-dimensional sampling module is used to perform two-dimensional sampling on the grayscale image to obtain the two-dimensional sampling points of the grayscale image;

[0093] Gray data acquisition module, used to acquire gray data of gray images;

[0094] The three-dimensional image acquisition module is used to acquire the three-dimensional grid image of the road image according to the two-dimensional sampling points and gray data of the gray image;

[0095] The roughness acquisition module is used to acquire the road surface roughness.

[0096] The embodiment of the present invention is used to measure the roughness of cement ...

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Abstract

The invention provides a pavement roughness measuring method and a pavement roughness measuring device. The pavement roughness measuring method comprises steps that a pavement image is acquired; the graying processing of the pavement image is carried out to acquire a gray-scale image of a pavement; the two-dimensional sampling of the gray-scale image is carried out to acquire the two-dimensional sampling point of the gray-scale image; the gray-scale data of the gray-scale image is acquired; the three-dimensional grid image of the pavement image is acquired according to the two-dimensional sampling point and the gray-scale data of the gray-scale image; the pavement roughness is acquired; The pavement roughness measuring method and the pavement roughness measuring device are used to measure the cement concrete pavement roughness, and by adopting the above mentioned method, the result of measuring the cement concrete pavement roughness is stable, and on-site fast sampling is realized during outdoor measurement, and only later indoor analysis and calculation are required.

Description

Technical field [0001] The invention relates to the technical field of road surface measurement, in particular to a method and device for measuring road surface roughness. Background technique [0002] Road surface roughness refers to the ability of road surface aggregates to prevent tire sliding. It is usually expressed in terms of road surface friction coefficient and road surface structure depth. However, the traditional method of testing road surface friction coefficient and structure depth has very unstable results. The coefficient has high requirements on the instrument, and the measured results of different pendulum instruments are very different. In addition, the manual sand paving method is used in the construction depth specification. The measured results of different experimenters are quite different, and human influence factors are inevitable. Summary of the invention [0003] The purpose of the present invention is to provide a road surface roughness measurement metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/30
CPCG01B11/303
Inventor 孔令云孙瑞黄麟钬
Owner CHONGQING JIAOTONG UNIVERSITY
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