Gravel geometric feature acquisition system and acquisition method

A technology of geometric features and acquisition system, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems of labor, noise and dust pollution, and achieve the effect of simple and easy equipment, small site requirements, and satisfying accuracy requirements.

Active Publication Date: 2013-04-24
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of laborious, time-consuming, high noise and dust pollution in the traditional crushed stone grading screening test, the present invention provides a crushed stone geometric feature collection system and collection method, which are used for five-view imaging of graded crushed stones, Coope

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  • Gravel geometric feature acquisition system and acquisition method
  • Gravel geometric feature acquisition system and acquisition method
  • Gravel geometric feature acquisition system and acquisition method

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Embodiment Construction

[0022] Below in conjunction with the accompanying drawings the present invention will be further described.

[0023] Such as figure 1 As shown, the present invention adopts a tripod 11 with an extension arm, installs the tripod 11 on a flat ground, and installs a horizontal storage table 1 in a three-point hinged manner at one end of the extension arm. Panel, use a dark panel for image acquisition of light-colored gravel, and replace it with a light-color panel for image acquisition of dark-colored gravel, so as to ensure that the color of the storage table 1 has a large contrast with the gravel 6 to be tested. The other end of the extension arm is installed with the horizontal fine-tuning bracket 4, and the mirror group 8 formed by the hinged connection of two plane mirrors is placed on the horizontal storage table in the form that the mirror surface is perpendicular to the storage table. The fixing bracket 13 is assembled with the mirror group 8 to fix the mirrors, and the ...

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Abstract

The invention discloses a gravel geometric feature acquisition system and an acquisition method. A plane mirror assembly and a video camera are used for obtaining real gravel geometric features, and a gravel three-dimensional model is received according to the three-dimensional reconstruction technology, and the gravel geometric feature acquisition system and the acquisition method are used for obtaining the gravel geometric features and gradation characteristics. The main structure of the system comprises a retroreflector surface group, a video camera, and a computer. A picture is received by shooting at the gravels between the two mirrors and images reflected in the mirror, the images are inputted into the computer through a data line, the geometric features of rock fragments are gained through a three-dimensional reconstruction algorithm, and the three-dimensional model is established. The gravel geometric feature acquisition system and the acquisition method have the advantages that the geometrical features data of gravels are obtained, the granular real shape is restored, the shortcoming that a traditional screening test can only determine the minimum grain size is overcome. The gravel geometric feature acquisition system and the acquisition method are capable of meeting the accuracy requirements of the gravel granularity analysis, and of carrying out a plurality of stress deformation analysis by establishing a model combined with a discrete element software analysis technology.

Description

technical field [0001] The invention relates to a geometric feature collection system and a collection method, in particular to a gravel geometric feature collection system and a collection method. Background technique [0002] With the rapid development of my country's high-speed railway construction, it is very important to improve the quality of subgrade construction and adapt to the leapfrog development of railways. The emergence of passenger dedicated lines poses new challenges to the design, construction and maintenance of traditional railways. Railway subgrade is an important part of railway engineering. As a geotechnical structure, it is mainly composed of the surface layer of the subgrade, the bottom layer of the subgrade and the embankment below the subgrade. The settlement of the subgrade is mainly caused by the superposition of the settlement of these parts. As the direct basis of the track structure, the graded crushed stone layer needs to be studied urgently to...

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Application Information

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IPC IPC(8): G01B11/00G01N15/02
Inventor 边学成李公羽李伟蒋红光陈云敏
Owner ZHEJIANG UNIV
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