Carbon fiber composite rivet hole size detection system and method

A carbon fiber material and size detection technology, which is applied in the direction of measuring devices, image data processing, instruments, etc., can solve the problems of difficult to measure the depth information of the inner hole surface and the difficulty of image detection, so as to achieve convenient and intuitive observation, ensure accuracy, and avoid effect of difficulty

Active Publication Date: 2020-04-10
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, for carbon fiber surfaces, the obtained grid-containing form leads to difficulties in edge detection of images d
In addition, the pictu

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  • Carbon fiber composite rivet hole size detection system and method
  • Carbon fiber composite rivet hole size detection system and method
  • Carbon fiber composite rivet hole size detection system and method

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[0026] The present invention is specifically described below through the examples, it is necessary to point out that the present examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the invention, those skilled in the art can according to the above-mentioned present invention Some non-essential improvements and adjustments made in the content of the invention.

[0027] The object of the present invention is achieved by the following technical measures:

[0028] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Such as figure 1As shown, including in the laser detection system 1, the main support 102 is placed on the workbench 101, the beam 103 is installed in front of the main support 102 and can move linearly along the front and rear directions of the main support, and the mechanical arm 104 installed in front of the beam 103...

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Abstract

The invention discloses a carbon fiber composite rivet hole size detection system and method, and the system and method are characterized in that a line laser is employed to scan the depth informationof a rivet hole contour, a depth convolution neural network algorithm and a projection method are utilized to obtain the images of a single rivet hole and a cylindrical hole, and the complexity of edge extraction is simplified; the diameter sizes of the cylindrical hole and a conical surface large hole are accurately extracted by using a partitioning thought and adopting a Canny algorithm and a sub-pixel edge extraction algorithm; fitting parameters of conical surface point cloud data are solved through a two-step method, conical surface angle information of the rivet hole is achieved, and the accuracy of a conical angle is guaranteed; a three-dimensional display technology is used for displaying a rivet hole scanning three-dimensional image, and the visual observation of size informationis facilitated. The method provided by the invention has the advantages of high scanning speed, low edge detection difficulty, high size detection precision and the like.

Description

technical field [0001] The invention relates to the field of intelligent size detection, in particular to a method for obtaining the size of a rivet hole by dynamically scanning the contour information of a rivet hole part with a line laser. Background technique [0002] Carbon fiber composite material is a special fiber composed of carbon elements. It has stable valence, excellent chemical properties of strong acid resistance and strong alkali resistance, and physical properties of high temperature resistance, friction resistance, electrical conductivity and heat conduction. It is a kind of excellent mechanical properties. new material. Its specific gravity is less than a quarter of that of steel, and its tensile strength and tensile modulus are also higher than that of steel. It is suitable for use under severe environment and climate change conditions, and can improve the bearing capacity, seismic performance and durability of components. Carbon fiber materials are wide...

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Application Information

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IPC IPC(8): G01B11/00G01B11/08G01B11/24G01B11/26G01B11/27G06T7/00G06T7/13G06T7/62
CPCG01B11/00G01B11/08G01B11/2433G01B11/26G01B11/27G06T7/0004G06T2207/10028G06T2207/30108G06T7/13G06T7/62
Inventor 王瑜李迅波魏宏才蔡吴缺董一凡曾毅星
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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