CN210803323U - Curved surface glass defect detecting system - Google Patents
Curved surface glass defect detecting system Download PDFInfo
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- CN210803323U CN210803323U CN201921695329.9U CN201921695329U CN210803323U CN 210803323 U CN210803323 U CN 210803323U CN 201921695329 U CN201921695329 U CN 201921695329U CN 210803323 U CN210803323 U CN 210803323U
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Abstract
The utility model discloses a curved surface glass defect detecting system, utilize the linear array camera and the area array camera that duplex position distributing type arranged, cooperation optimal design's first programme-controlled three-dimensional many light field light source and the programme-controlled many light field light source of second, the realization is to the image acquisition under different illumination environment of the different positions of curved surface glass (curved surface glass plane portion and long arc limit detection, R angle and short arc limit detection), it filters the image to recycle linear array camera data preprocessing platform and the area array camera data preprocessing platform based on embedded system, the boundary detection, preliminary treatment such as defect detection, image data send data processing terminal through the programme-controlled switch after the preliminary treatment and carry out defect identification and classification, simple structure has, the system is stable, detect high-efficiently, the accurate and easily managed advantage of defect identification.
Description
Technical Field
The utility model belongs to the technical field of machine vision, concretely relates to curved surface glass defect detecting system especially is fit for 2.5D 3D 3.5D curved surface apron glass defect on-line measuring.
Background
The cover plate glass is a protective layer of the touch screen and is widely applied to the aspects of consumer electronics, automobile central control screens, industrial control and the like. In recent years, with the large-scale application of flexible OLED screens and the continuous optimization of various types of products in terms of ergonomics and appearance, cover glasses have undergone the development process from 2D to 2.5D to 3D to 3.5D. Compared with the traditional 2D plane cover plate glass, the curved surface cover plate glass has more excellent performance, has remarkable advantages in the aspects of fitting degree, heat dissipation, glossiness, attractiveness and the like, and is expected to be widely applied to various 3C products such as smart phones, smart watches, tablet computers, instrument panels and other wearable products in the future.
The defect detection of the curved cover plate glass is the key of product quality control, and directly influences the product productivity and the user experience. At present, domestic cover plate glass production enterprises mainly adopt manual visual inspection means, so that the efficiency is low, the omission factor is high, and the problem that the labor cost is continuously increased is solved. With the further expansion of the market demand of the curved cover plate glass, the automatic upgrading of related production lines is a necessary trend, and the automatic on-line curved cover plate glass defect detection equipment has a wide market. Compared with the traditional 2D cover plate glass, the 2.5D/3D/3.5D curved cover plate glass has more complex appearance. Different from the plane appearance of 2D cover glass, 2.5D cover glass is designed into an arc shape on the edge, 3D cover glass adopts the arc design in the middle or on the edge, and 3.5D cover glass is designed into an arc shape with the edge being close to 90 degrees. The complex processes and manufacturing processes inevitably result in a wide variety of defects in the curved cover glass product, including but not limited to scratches, pits, impurities, edge chipping, and the like. Due to the complex appearance structure of the curved cover plate glass, various defects present different visual characteristics along with the change of positions, illumination angles and visual angles, and very high requirements are provided for the design and manufacture of on-line automatic defect detection equipment based on machine vision.
In recent years, people have put forward a variety of devices and methods in hopes of realizing the automatic on-line detection of the defects of the curved cover plate glass. The Chinese utility model discloses a cell-phone curved surface glass typical defect on-line measuring device and method "(application number: 201910347948.7, application date: 2019.04.28) adopts multistation to dispose area-array camera and linear array camera respectively and gathers the image of curved surface apron glass different positions, utilizes convolution neural network to carry out defect detection and classification, has higher detection precision, nevertheless faces several limits in the aspect: firstly, a data acquisition and processing system is complex, and an independent acquisition card and a computer are adopted to process data acquired by a single camera, so that the system is high in cost, low in integration level and poor in stability; secondly, the motion control system is complex, and the curved cover plate glass needs to be rotated to respectively detect the long edge and the short edge, so that the detection efficiency of the system is low; finally, the light source configuration scheme mainly uses coaxial light and a strip-shaped light source, the detection effect on the classification type defects is poor, and the environmental interference influence of dust, flies and the like is serious. The Chinese utility model 'a 3D curved surface glass screen detection area light source' (application number: 201710531451.1, application date: 2017.07.03) adopts the polarized light sources with different wavelengths to combine into the area light source, realizes the stripe irradiation on the 3D curved surface glass, can carry out better representation on the normal vector of the screen surface, but has limited effect on defect identification and classification. The utility model discloses a china utility model "a multi-angle is polished device and collection system" (application number: 201810317450.1, application date: 2018.04.10) through set up a plurality of light source modules of different irradiation angles in three-dimensional space, realizes treating the illumination of detecting the product different angles, does not carry out illumination optimal configuration, and so many illumination fields number will produce huge data bulk, brings very big challenge for data transmission and processing, seriously influences system real-time. The Chinese utility model 'a glass defect detection method and device' (application number: 201711367046.7, application date: 2017.12.18) and the Chinese utility model 'glass surface defect detection method and device' (application number: 201910342570.1, application date: 2019.04.26) respectively propose two image processing methods, the former utilizes the energy response of the image to detect the defect, and the latter utilizes the difference value before and after the image filtering to detect the defect, and all can get a certain effect.
Generally, many attempts are made on defect detection of a curved glass cover plate, but in the prior art, the detection device is complex in structure and operation method, low in system integration level, limited in performance, high in cost and not beneficial to popularization and application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid not enough among the prior art and provide a curved surface glass defect detecting system, aim at realizing economy, high-efficient, the online automated inspection of curved surface glass defect of high accuracy, the on-line measuring of specially adapted 2.5D 3D 3.5D curved surface apron glass defect.
The purpose of the utility model is realized through the following technical scheme: there is provided a curved glass defect detection system comprising:
the curved glass conveying device is used for conveying a workpiece to be detected during online detection;
sequentially arranging a linear array camera station and an area array camera station along the transmission direction of the curved glass transmission device, wherein the linear array camera station and the area array camera station are respectively used for detecting a plane part and a long arc edge of the curved glass and detecting an R angle and a short arc edge of the curved glass;
the linear array camera station comprises a first workpiece position detection sensor, a linear array camera with a lens, a first program-controlled three-dimensional multi-light-field light source, a first light source controller and a linear array camera data preprocessing platform, wherein the first workpiece position detection sensor is used for detecting whether a workpiece reaches the linear array detection station, the linear array camera is used for acquiring images of a plane part and a long arc edge position of the workpiece to be detected in different illumination environments, the first program-controlled three-dimensional multi-light-field light source is used for providing illumination environments with different angles, the first light source controller is used for controlling the first program-controlled three-dimensional multi-light-field light source, and the linear array camera data preprocessing platform is used for being responsible for data transfer, image preprocessing and network communication of the linear array;
the area array camera station comprises a second workpiece position detection sensor, an area array camera with a lens, a second program-controlled three-dimensional multi-light-field light source, a second light source controller and an area array camera data preprocessing platform, wherein the second workpiece position detection sensor is used for detecting whether a workpiece reaches the area array detection station, the area array camera is used for acquiring images of the short arc edge and the R angle position of the workpiece, the second program-controlled three-dimensional multi-light-field light source is used for providing illumination conditions of different angles, the second light source controller is used for controlling the second program-controlled three-dimensional multi-light-field light source, and the area array camera data preprocessing platform is used for being responsible for data transfer, image preprocessing and network communication of the area array camera;
the program controlled exchanger is used for the transfer of the preprocessed image data and the communication of control signals;
the signal interface platform is respectively connected with the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the program controlled switch and is used for inputting and outputting synchronous signals, control signals and signals of the first workpiece position detection sensor and the second workpiece position detection sensor;
the data processing terminal is connected with the stored program control exchanger and is used for the deep processing of image data, the data storage management and the system control;
and the display control component is connected with the data processing terminal and is used for displaying the processed result and the human-computer interaction interface.
As a further improvement, the number of line cameras is multiple and in a distributed arrangement, including:
the system comprises at least three first linear-array cameras, a light source and a controller, wherein the at least three first linear-array cameras are arranged above a workpiece to be detected and used for acquiring a workpiece image corresponding to a reflected light field;
and at least three second linear-array cameras arranged below the workpiece to be detected and used for acquiring the workpiece image corresponding to the transmission light field.
As a further improvement, one of the at least three first linear cameras arranged above the workpiece to be detected is arranged at the middle position above the workpiece to be detected, and forms an included angle of 0-15 degrees with the normal direction of the surface of the workpiece to be detected, and is used for acquiring an image of the plane part of the workpiece; in addition, at least two first linear-array cameras are symmetrically distributed on two sides of one first linear-array camera, and the optical axis direction of each first linear-array camera is consistent with the normal direction of the arc edge of the workpiece to be detected, and the first linear-array cameras are respectively used for acquiring images of the arc edge on two sides of the workpiece to be detected.
As a further improvement, the area-array camera includes:
one or more first area-array cameras arranged above a workpiece to be detected and used for acquiring reflection images of the workpiece in different illumination environments;
and one or more second area-array cameras arranged below the workpiece to be detected and used for acquiring transmission images of the workpiece under different illumination environments.
As a further improvement, one or more first area-array cameras arranged above the workpiece to be detected form an included angle of 0-30 degrees with the normal direction of the workpiece to be detected.
As a further improvement, at least three first linear cameras arranged above the workpiece to be detected and at least three second linear cameras arranged below the workpiece to be detected are symmetrically arranged by taking the transmission direction of the curved glass transmission device as an axis;
and/or one or more first area-array cameras arranged above the workpiece to be detected and one or more second area-array cameras arranged below the workpiece to be detected are symmetrically arranged by taking the transmission direction of the curved glass transmission device as an axis.
As a further improvement, the number of the linear array camera data preprocessing platforms is the same as that of the linear array cameras; and/or the number of the area-array camera data preprocessing platforms is the same as that of the area-array cameras.
As further improvement, first programme-controlled three-dimensional many light field light source opens and is arched multi-angle light source for the bottom, with wait to examine work piece direction of motion and place perpendicularly, just be the inside arc light source that contains a plurality of co-altitude of arched multi-angle light source for wait to examine the even incident light that the work piece provided a plurality of co-angles.
As a further improvement, the second program-controlled three-dimensional multi-angle light source is a multi-angle light source with an open bottom and a hemispherical shape or a square box shape, and is vertically placed in the motion direction of the workpiece to be inspected, and the multi-angle light source with the hemispherical shape or the square box shape internally comprises a plurality of strip-shaped light sources with different heights, and is used for providing uniform incident light with a plurality of different angles for the workpiece to be inspected.
As a further improvement, the curved glass defect detection system further comprises a temperature control system respectively connected with the first light source controller, the second light source controller, the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the data processing terminal, and used for controlling the temperature of the first program-controlled three-dimensional multi-light-field light source, the second program-controlled three-dimensional multi-light-field light source, the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the data processing terminal.
The utility model provides a curved surface glass defect detecting system compares with current detection technology, has following advantage:
(1) the area-array camera and the linear array camera which are distributed in double stations reduce the stations to the maximum extent, improve the detection efficiency, ensure the rapid and accurate detection of common defects in the curved glass and prevent the omission and false detection;
(2) the area-array cameras and the line-array cameras which are distributed in an up-and-down symmetrical mode are combined with an image processing algorithm, so that the defects of the upper surface and the lower surface of a workpiece to be detected can be distinguished, and meanwhile, the interference of environmental factors such as dust, flies and the like can be eliminated;
(3) the linear array camera data preprocessing platform and the area array camera data preprocessing platform based on the embedded system improve the image processing efficiency to the maximum extent, improve the system data capacity, can be matched with a first program-controlled three-dimensional multi-light-field light source and a second program-controlled three-dimensional multi-light-field light source to acquire the images of the workpiece to be detected under different illumination environments as much as possible, and improve the detection precision;
(4) the system is more stable and efficient and has lower cost compared with a system architecture in which a plurality of sets of computers independently process a single camera;
(5) the whole detection system is simple in structure, accurate in identification and easy to manage.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work. In the drawings:
FIG. 1 is a schematic view of a defect inspection system for curved glass according to an embodiment of the present invention;
FIG. 2(a) is a side view of the upper half of the workpiece to be inspected in the station of the line camera of the present invention along the moving direction of the workpiece to be inspected;
FIG. 2(b) is a side view of the upper half of the workpiece to be inspected in the station of the line camera of the present invention, which is perpendicular to the moving direction of the workpiece to be inspected;
FIG. 3(a) is a side view of the upper half of the workpiece to be inspected in the area-array camera station of the present invention along the moving direction of the workpiece to be inspected;
FIG. 3(b) is a side view of the upper half of the workpiece to be inspected in the area-array camera station of the present invention, which is perpendicular to the moving direction of the workpiece to be inspected;
FIG. 4(a) is a schematic perspective view of an embodiment of a first programmable three-dimensional multi-light field light source;
FIG. 4(b) is a side cross-sectional view of the first programmable three-dimensional multi-light-field light source of FIG. 4 (a);
FIG. 5(a) is a schematic perspective view of an embodiment of a second programmable three-dimensional multi-light field light source;
FIG. 5(b) is a side cross-sectional view of the second programmable three-dimensional multi-light field light source of FIG. 5 (a);
FIG. 5(c) is a schematic perspective view of another embodiment of a second programmable three-dimensional multi-lightfield light source;
description of reference numerals:
1-curved glass transmission device, 2-workpiece to be detected, 3-first program-controlled three-dimensional multi-light-field light source, 4-first workpiece position detection sensor, 5-first linear array camera, 6-second linear array camera, 7-first linear array camera data preprocessing platform, 8-second linear array camera data preprocessing platform, 9-second workpiece position detection sensor, 10-second program-controlled three-dimensional multi-light-field light source, 11-second linear array camera data preprocessing platform, 12-first data preprocessing platform, 13-first linear array camera, 14-second linear array camera, 15-program-controlled switch, 16-data processing terminal, 17-control terminal, 18-signal interface platform, 19-temperature control system, 20-arc light source, 21-LED strip light source, α -included angle between first linear array camera 5 and workpiece to be detected 2 normal direction, β -included angle between first linear array camera 13 and workpiece to be detected 2 normal direction.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "horizontal", "vertical", "left", "right", "top", "bottom", "inner", "outer", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present invention.
FIG. 1 is a schematic view of an embodiment of the system for detecting defects in curved glass according to the present invention. As shown in fig. 1, the curved glass defect detecting system provided by the embodiment of the present invention comprises a curved glass conveying device 1 for conveying a workpiece 2 to be detected during on-line detection, and along the conveying direction of the curved glass conveying device 1, a linear array camera station for realizing detection of a curved glass plane part and a long arc edge and an area array camera station for realizing detection of a curved glass R angle and a short arc edge are sequentially arranged, specifically, the linear array camera station comprises a first workpiece position detecting sensor 4, a linear array camera with a lens, a first program-controlled three-dimensional multi-light-field light source 3, a first light source controller and a linear array camera data preprocessing platform, the area array camera station comprises a second workpiece position detecting sensor 9, an area array camera with a lens, a second program-controlled three-dimensional multi-light-field light source 10, a second light source controller and an area array camera data preprocessing platform, the first workpiece position detection sensor 4 is used for detecting whether a workpiece reaches a linear array detection station, the linear array camera is used for acquiring images of a plane part and a long arc edge position of the workpiece 2 to be detected in different illumination environments, the first program-controlled three-dimensional multi-light-field light source 3 is used for providing illumination environments with different angles, the first light source controller is used for controlling the first program-controlled three-dimensional multi-light-field light source 3, particularly providing driving and control signals for the first program-controlled three-dimensional multi-light-field light source 3, the linear array camera data preprocessing platform is used for transporting, preprocessing and network communication of linear array camera data, the second workpiece position detection sensor 9 is used for detecting whether the workpiece reaches an area array detection station, the area array camera is used for acquiring images of a short arc edge and an R angle position of the workpiece, the second program-controlled three-dimensional multi-light-field light source 10 is used for providing illumination conditions with different angles, and the second, specifically, driving and control signals are provided for the second program-controlled three-dimensional multi-light-field light source 10, and the area-array camera data preprocessing platform is used for taking charge of area-array camera data transfer, image preprocessing and network communication; meanwhile, the utility model discloses curved surface glass defect detecting system still includes programme-controlled switch 15, data processing terminal 16, shows accuse terminal 17 and signal interface platform 18, programme-controlled switch 15 for the image data after the preliminary treatment is transported and control signal communication; the signal interface platform 18 is respectively connected with the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the program controlled switch 15 and is used for inputting and outputting synchronous signals, control signals and signals of the first workpiece position detection sensor 4 and the second workpiece position detection sensor 9; the data processing terminal 16 is connected with the stored program control exchange 15 and is used for deep processing of image data, data storage management and system control, and preferably, a high-performance blade server can be selected; the display and control unit is connected to the data processing terminal 16 for displaying the processed result and a man-machine interface, preferably, a liquid crystal display and a mouse and keyboard are selected. Further, the curved glass defect detection system further comprises a temperature control system 19, wherein the temperature control system 19 is respectively connected with the first light source controller, the second light source controller, the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the data processing terminal 16 and is used for controlling the temperature of the first program-controlled three-dimensional multi-light-field light source 3, the second program-controlled three-dimensional multi-light-field light source 10, the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the data processing terminal 16, and preferably, the temperature control system 19 can select a water cooling system.
It should be noted that the utility model discloses in aforementioned curved surface glass transmission device 1 mainly includes motor, magnetic force wheel, bearing, conveyer belt and encoder, and the motor rotates along waiting to examine 2 directions of motion of work piece through magnetic force wheel drive bearing, and the conveyer belt links to each other two liang of bearings, and the encoder is connected to on the motor for realize transmission speed and measure.
Through the setting, the utility model discloses utilize the linear array camera and the area array camera that duplex position distributing type arranged, cooperation optimal design's first programme-controlled three-dimensional many light field light source 3 and the programme-controlled three-dimensional many light field light source 10 of second, the realization is to the image acquisition under different illumination environment of different positions of curved surface glass (curved surface glass plane portion and long arc limit detection, R angle and short arc limit detection), it filters the image to recycle linear array camera data preprocessing platform and the area array camera data preprocessing platform based on embedded system, the boundary detection, preliminary treatment such as defect detection, image data send data processing terminal 16 through programme-controlled switch 15 after the preliminary treatment and carry out defect identification and classification, simple structure has, the system is stable, detect high-efficiently, the accurate and easy advantage of management of defect identification.
In a further embodiment, the number of line cameras is a plurality of line cameras distributed, as shown in fig. 1, in this embodiment, the number of line cameras is the same as the number of line camera data preprocessing platforms, and the line cameras include a first line camera 5 arranged above the workpiece 2 to be inspected and a second line camera 6 arranged below the workpiece 2 to be inspected, the first line camera 5 is connected to the first line camera data preprocessing platform 7, the second line camera 6 is connected to the second line camera data preprocessing platform 8, the first line camera 5 is used for acquiring a workpiece image corresponding to a reflected light field, the second line camera 6 is used for acquiring a workpiece image corresponding to a transmitted light field, it should be noted that the first line camera 5 and the second line camera 6 are preferably provided with at least three portions, and the first line camera 5 and the second line camera 6 of at least three portions are symmetrically arranged with the transmission direction of the curved glass transmission device 1 as an axis, and the normal line cameras 5 of fig. 2(a) are arranged with three portions in the case that the number of the first line cameras 5 is three portions in the case of fig. 2(a) and 2(b) of the first line cameras are arranged with the normal line cameras, and the normal line cameras, the normal line cameras are arranged with the normal line cameras, the normal line cameras.
As a further preferred embodiment, the number of area cameras is also multiple, and it is the same as the number of area camera data preprocessing platforms, as shown in fig. 1, in this embodiment, the area cameras include a first area camera 13 disposed above the workpiece 2 to be inspected and a second area camera 14 disposed below the workpiece 2 to be inspected, the area camera data preprocessing platform includes a first area camera data preprocessing platform 12 and a first area camera data preprocessing platform 11, the first area camera 13 and the first area camera data preprocessing platform 12, the second area camera 14 and the second area camera data preprocessing platform 11, the first area camera 13 is used for acquiring the reflected images of the workpiece under different lighting environments, the second area camera 14 is used for acquiring the transmitted images of the workpiece under different lighting environments, it should be noted that the number of the first area camera 13 and the second area camera 14 may be one, or multiple, the number of the first area camera 13 and the second area camera 14 may be one, the number of the first area camera 13 and the second area camera 14 is set as the number of the normal line angle of the normal line of the glass transmission device 1, i.e. the normal line angle of the normal line of the glass transmission device 1 is set as the number of the normal line of the workpiece (3) of the normal line of the workpiece, and the normal line angle of the normal line 3, the normal line 3 of the normal line 13 is set as the normal line 3, the normal line 13 is set as the normal line 13, the normal line of the normal line angle of the normal line 2, the normal line 3 of.
Fig. 4(a) is a schematic structural diagram of an embodiment of the first program-controlled three-dimensional multi-light-field light source 3 of the present invention. As shown in fig. 4(a), the first programmable three-dimensional multi-light-field light source 3 is arched in overall appearance, i.e. is an arched multi-angle light source with an open bottom, and is placed perpendicular to the moving direction of the workpiece 2 to be inspected. Specifically, as shown in fig. 4(b), the arched multi-angle light source includes a plurality of arc-shaped light sources 20 with different heights inside, which are used to provide a plurality of uniform incident lights with different angles for the workpiece 2 to be detected, i.e. the overall shape of each arc-shaped light source 20 is consistent with the appearance of the first programmed three-dimensional multi-light field light source 3, so as to facilitate installation. Preferably, the arc-shaped light source 20 is an LED light source, the irradiation direction of the LED light source is set to be vertical, and each LED light source can be independently controlled to be turned on or off through the first light source controller.
Fig. 5(a) is a schematic structural diagram of an embodiment of a second programmable three-dimensional multi-light-field light source 10 according to the present invention. As shown in fig. 5(a), the whole appearance of the second program-controlled three-dimensional multi-light-field light source 10 is hemispherical, and is placed perpendicular to the moving direction of the workpiece to be inspected 2, a circular observation window is opened above the second program-controlled three-dimensional multi-light-field light source, the bottom of the second program-controlled three-dimensional multi-light-field light source is open, a plurality of LED strip light sources 21 are preferably installed inside the second program-controlled three-dimensional multi-light-field light source, the whole appearance of each LED strip light source 21 is consistent with the appearance of the second program-controlled three-dimensional multi-light-field light source 10, in the embodiment, each LED strip light source 21 is arranged in an arc shape, as shown in fig. 5(b), the LED irradiation. It should be noted that, the overall appearance of the second program-controlled three-dimensional multi-light-field light source 10 is not limited to a hemisphere, and other appearance shapes of the second program-controlled three-dimensional multi-light-field light source 10 that can implement this technical scheme are all in the protection scope of the present invention. Fig. 5(c) shows that the second programmable three-dimensional multi-light field light source 10 is a square box shape in overall appearance.
In a word, compared with the prior art, the utility model, can clearly, accurately discern such as mar, pockmark, impurity, collapse defect such as limit, breach, have simple structure, detect the advantage that the precision is high, low cost and easily management.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the invention.
In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that, although various changes and modifications can be made by those skilled in the art, unless such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.
Claims (10)
1. Curved surface glass defect detecting system, its characterized in that includes:
the curved glass conveying device is used for conveying a workpiece to be detected during online detection;
sequentially arranging a linear array camera station and an area array camera station along the transmission direction of the curved glass transmission device, wherein the linear array camera station and the area array camera station are respectively used for detecting a plane part and a long arc edge of the curved glass and detecting an R angle and a short arc edge of the curved glass;
the linear array camera station comprises a first workpiece position detection sensor, a linear array camera with a lens, a first program-controlled three-dimensional multi-light-field light source, a first light source controller and a linear array camera data preprocessing platform, wherein the first workpiece position detection sensor is used for detecting whether a workpiece reaches the linear array detection station, the linear array camera is used for acquiring images of a plane part and a long arc edge position of the workpiece to be detected in different illumination environments, the first program-controlled three-dimensional multi-light-field light source is used for providing illumination environments with different angles, the first light source controller is used for controlling the first program-controlled three-dimensional multi-light-field light source, and the linear array camera data preprocessing platform is used for being responsible for data transfer, image preprocessing and network communication of the linear array;
the area array camera station comprises a second workpiece position detection sensor, an area array camera with a lens, a second program-controlled three-dimensional multi-light-field light source, a second light source controller and an area array camera data preprocessing platform, wherein the second workpiece position detection sensor is used for detecting whether a workpiece reaches the area array detection station, the area array camera is used for acquiring images of the short arc edge and the R angle position of the workpiece, the second program-controlled three-dimensional multi-light-field light source is used for providing illumination conditions of different angles, the second light source controller is used for controlling the second program-controlled three-dimensional multi-light-field light source, and the area array camera data preprocessing platform is used for being responsible for data transfer, image preprocessing and network communication of the area array camera;
the program controlled exchanger is used for the transfer of the preprocessed image data and the communication of control signals;
the signal interface platform is respectively connected with the linear array camera data preprocessing platform, the area array camera data preprocessing platform and the program controlled switch and is used for inputting and outputting synchronous signals, control signals and signals of the first workpiece position detection sensor and the second workpiece position detection sensor;
the data processing terminal is connected with the stored program control exchanger and is used for the deep processing of image data, the data storage management and the system control;
and the display control component is connected with the data processing terminal and is used for displaying the processed result and the human-computer interaction interface.
2. The curved glass defect detection system of claim 1, wherein the line cameras are multiple and distributed in number, comprising:
the system comprises at least three first linear-array cameras, a light source and a controller, wherein the at least three first linear-array cameras are arranged above a workpiece to be detected and used for acquiring a workpiece image corresponding to a reflected light field;
and at least three second linear-array cameras arranged below the workpiece to be detected and used for acquiring the workpiece image corresponding to the transmission light field.
3. The curved glass defect detection system of claim 2, wherein one of the at least three first line cameras disposed above the workpiece to be inspected is disposed at an intermediate position above the workpiece to be inspected, and forms an angle of 0 to 15 ° with the normal direction of the surface of the workpiece to be inspected, for acquiring an image of a planar portion of the workpiece; in addition, at least two first linear-array cameras are symmetrically distributed on two sides of one first linear-array camera, and the optical axis direction of each first linear-array camera is consistent with the normal direction of the arc edge of the workpiece to be detected, and the first linear-array cameras are respectively used for acquiring images of the arc edge on two sides of the workpiece to be detected.
4. The curved glass defect detection system of claim 2, wherein the area-array camera comprises:
one or more first area-array cameras arranged above a workpiece to be detected and used for acquiring reflection images of the workpiece in different illumination environments;
and one or more second area-array cameras arranged below the workpiece to be detected and used for acquiring transmission images of the workpiece under different illumination environments.
5. The curved glass defect detection system of claim 4, wherein the one or more first area-array cameras disposed above the workpiece to be inspected make an angle of 0-30 ° with respect to a normal direction of the workpiece to be inspected.
6. The curved glass defect detection system of claim 4, wherein at least three first line-array cameras disposed above the workpiece to be inspected and at least three second line-array cameras disposed below the workpiece to be inspected are symmetrically disposed with respect to the conveying direction of the curved glass conveying device as an axis;
and/or one or more first area-array cameras arranged above the workpiece to be detected and one or more second area-array cameras arranged below the workpiece to be detected are symmetrically arranged by taking the transmission direction of the curved glass transmission device as an axis.
7. The curved glass defect detection system of claim 1, wherein the number of linear array camera data preprocessing platforms is the same as the number of linear array cameras; and/or the number of the area-array camera data preprocessing platforms is the same as that of the area-array cameras.
8. The curved glass defect detection system according to any one of claims 1 to 7, wherein the first programmable three-dimensional multi-light-field light source is an arched multi-angle light source with an open bottom, and is disposed perpendicular to the motion direction of the workpiece to be inspected, and the arched multi-angle light source includes a plurality of arc-shaped light sources with different heights inside, so as to provide uniform incident light with different angles for the workpiece to be inspected.
9. The curved glass defect detection system according to any one of claims 1 to 7, wherein the second programmable three-dimensional multi-light-field light source is a multi-angle light source with an open bottom and a hemispherical or square box shape, and is disposed perpendicular to the motion direction of the workpiece to be detected, and the multi-angle light source with the hemispherical or square box shape comprises a plurality of bar-shaped light sources with different heights inside for providing a plurality of uniform incident lights with different angles for the workpiece to be detected.
10. The curved glass defect detection system according to any one of claims 1 to 7, further comprising a temperature control system connected to the first light source controller, the second light source controller, the line camera data preprocessing platform, the area camera data preprocessing platform and the data processing terminal, respectively, for controlling the temperature of the first program-controlled three-dimensional multi-light-field light source, the second program-controlled three-dimensional multi-light-field light source, the line camera data preprocessing platform, the area camera data preprocessing platform and the data processing terminal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110567977A (en) * | 2019-10-11 | 2019-12-13 | 湖南讯目科技有限公司 | Curved glass defect detection system and method |
| CN112014414A (en) * | 2020-08-14 | 2020-12-01 | 西安电子科技大学 | System and method for detecting defects of mobile phone glass cover plate |
| CN113311004A (en) * | 2021-06-30 | 2021-08-27 | 西玛特易联（苏州）科技有限公司 | Sound box detection equipment and sound box defect detection method |
| CN114018934A (en) * | 2021-11-03 | 2022-02-08 | 四川启睿克科技有限公司 | Imaging system for detecting surface defects of arc-shaped metal |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567977A (en) * | 2019-10-11 | 2019-12-13 | 湖南讯目科技有限公司 | Curved glass defect detection system and method |
| CN112014414A (en) * | 2020-08-14 | 2020-12-01 | 西安电子科技大学 | System and method for detecting defects of mobile phone glass cover plate |
| CN113311004A (en) * | 2021-06-30 | 2021-08-27 | 西玛特易联（苏州）科技有限公司 | Sound box detection equipment and sound box defect detection method |
| CN114018934A (en) * | 2021-11-03 | 2022-02-08 | 四川启睿克科技有限公司 | Imaging system for detecting surface defects of arc-shaped metal |
| CN114018934B (en) * | 2021-11-03 | 2023-11-03 | 四川启睿克科技有限公司 | Imaging system for arc-shaped metal surface defect detection |
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