Visual detection device and method for round part missing
A visual inspection device, a technology for circular parts, applied in image data processing, instruments, calculations, etc., to overcome the false detection of the center of the circle, improve the accuracy and stability, and overcome the effect of image scaling
Active Publication Date: 2020-04-28
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
[0003] The object of the present invention is to solve the problems existing in the existing circular parts production technology, and provide a visual inspection device and method for missing circular parts, which can The processed round parts are automatically detected by the machine to ensure that each product produced is not missing parts, so that the production is stable and reliable, and the labor force is reduced, and the quality of product production is improved.
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[0032] In this example, if figure 1 As shown, a visual detection device for missing circular parts includes: an image acquisition module, an image recognition module, a laser data acquisition module, and a camera internal and external parameter calibration module;
[0033] The image acquisition module uses the industrial camera to obtain the two-dimensional image data of the workpiece surface of the circular part and transmits it to the image recognition module; in specific implementation, the image acquisition module includes: industrial camera, industrial lens and combined light source;
[0034] The combined light source includes a ring light source and a strip light source. The two light sources are combined to realize the illumination of circular and linear parts. The connection between the industrial camera and the industrial lens is connected through a standard C interface. The field of view of the workpiece is 20cm*10cm, the height from the camera to the workpiece is se...
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The invention discloses a visual detection device and method for round part missing. The device comprises an image acquisition module, an image recognition module, a laser data acquisition module anda camera internal and external parameter calibration module. The image acquisition module is connected with the image recognition module and is used for acquiring two-dimensional image data of the surface of the circular part; the laser data acquisition module is connected with the image recognition module and is used for acquiring a one-dimensional distance from the circular part to the camera; the camera internal and external parameter calibration module is connected with the image recognition module and used for obtaining conversion parameters from an image coordinate system to a camera coordinate system. According to the invention, the image processing algorithm is used for accurately positioning and analyzing the image feature information of the circular part, and whether part missingexists is judged according to the texture of the feature information, so as to adapt to missing detection of parts with different heights and different sizes, thereby improving the production efficiency and the product quality, and enabling the system to have the characteristics of accuracy, stability and the like.
Description
technical field [0001] The invention relates to the technical field of automatic detection in the production process of circular parts, and mainly relates to a missing detection device and method for the production and processing of circular parts. Background technique [0002] Due to the cumbersome process and many small parts in the production process of circular parts, missing parts are prone to occur. The traditional detection method is to detect manually. People are prone to missing detection due to the influence of the environment, resulting in unstable product quality. . Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the existing round parts production technology, to provide a visual detection device and method for missing round parts, which can automatically detect the processed round parts by machine, and ensure that every production There are no missing parts in a product, which makes the production s...
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Login to View More IPC IPC(8): G06T7/00G06T7/13G06T7/136G06T7/62G06T7/80
CPCG06T7/80G06T7/0004G06T7/13G06T7/136G06T7/62G06T2207/30164
Inventor 赵娜娜吴晶华王玉成蒋欣晟孔令成
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI