CN106645181A - Microscopic vision-based roller grinding surface defect detecting system - Google Patents
Microscopic vision-based roller grinding surface defect detecting system Download PDFInfo
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Abstract
本发明公开了一种基于显微视觉的轧辊磨削表面缺陷检测系统，包括：照明模块，照明模块包括光源和透镜组件，光源发出来的光经过透镜组件折射后形成第一光路照射至轧辊磨削表面；显微摄像模块，显微摄像模块包括：显微镜头和相机模块，第一光路经轧辊磨削表面镜面反射或漫反射后形成第二光路，第二光路被显微镜头聚焦后由相机模块转换成图像或视频信息；数据传输与处理模块，数据传输与处理模块通过数据传输模块接收图像或视频信息，对轧辊磨削表面的图像进行识别和处理，对轧辊磨削表面缺陷进行定性分析和定量测量。根据本发明的基于显微视觉的轧辊磨削表面缺陷检测系统可以快速且准确地检测轧辊磨削表面的缺陷，提升轧辊磨削表面质量及稳定性。
The invention discloses a detection system for roll grinding surface defects based on microscopic vision, which includes: an illumination module, the illumination module includes a light source and a lens assembly, and the light emitted by the light source is refracted by the lens assembly to form a first optical path to irradiate the roll grinding machine. Grinding surface; microscopic camera module, microscopic camera module includes: microlens and camera module, the first optical path forms the second optical path after specular reflection or diffuse reflection on the grinding surface of the roll, and the second optical path is focused by the microlens by the camera module Converted into image or video information; data transmission and processing module, the data transmission and processing module receives image or video information through the data transmission module, identifies and processes the image of the roll grinding surface, and conducts qualitative analysis and analysis of the roll grinding surface defects Quantitative measurement. The roll grinding surface defect detection system based on micro vision according to the present invention can quickly and accurately detect roll grinding surface defects, and improve the quality and stability of the roll grinding surface.
Description
技术领域technical field
本发明涉及磨削加工表面缺陷检测领域，尤其涉及一种基于显微视觉的轧辊磨削表面缺陷检测系统。The invention relates to the field of detection of surface defects in grinding processing, in particular to a detection system for roll grinding surface defects based on microscopic vision.
背景技术Background technique
轧辊表面质量是影响轧制产品质量的一个关键因素，在轧辊制造时的初磨削及轧制生产的修磨过程中具有重要影响。轧辊磨削表面常见缺陷有螺旋纹、斜纹、网纹、色差、斑点、振纹、划痕、烧伤等等。The surface quality of the roll is a key factor affecting the quality of rolled products, and has an important influence on the initial grinding during roll manufacturing and the grinding process of rolling production. Common defects on the grinding surface of rolls include spiral lines, twill lines, net lines, color differences, spots, vibration lines, scratches, burns, etc.
目前轧辊磨削过程中常用的自动化缺陷检测方法有涡流探伤、超声波探伤等，这些探伤方法可以实现裂纹等表面亚表面损伤的检测，但是对表面螺旋纹、网纹、斑点等表面缺陷无法实现有效地测量。针对后几种缺陷目前仍主要由经验丰富的工人通过肉眼在特定的角度及合适的光照条件下进行观测识别，这种观测方法对工人的经验要求高，检测的主观性强，且检测效率与准确率较低。同时，上述人工检测方法只能进行定性地观测而无法实现定量的测量，且由于肉眼观测的主观性无法形成统一的检测标准，从而使得对上述缺陷的评估收到严重的限制。此外，在工业实践中也往往采用打磨等方式对轧辊或轧制产品表面进行处理以增强检测效果，但是这些处理方法同样存在检测效率与准确率较低，且无法实现定量测量的缺陷。At present, the commonly used automatic defect detection methods in the roll grinding process include eddy current flaw detection and ultrasonic flaw detection. ground measurement. The latter defects are still mainly observed and identified by experienced workers with the naked eye under specific angles and suitable lighting conditions. This observation method has high requirements for workers’ experience, and the detection is highly subjective, and the detection efficiency is comparable to that of The accuracy rate is lower. At the same time, the above-mentioned manual detection method can only carry out qualitative observation but cannot realize quantitative measurement, and due to the subjectivity of naked eye observation, a unified detection standard cannot be formed, which severely limits the evaluation of the above-mentioned defects. In addition, in industrial practice, grinding and other methods are often used to treat the surface of rolls or rolled products to enhance the detection effect, but these processing methods also have the defects of low detection efficiency and accuracy, and cannot achieve quantitative measurement.
由于轧辊的体积与重量大，磨削难度高，其磨削周期长，磨削过程相关的操作也需要较高的人力、物力与时间成本，对轧制生产影响大。从而开发一种可以实现螺旋纹、网纹、色差、斑点等缺陷进行定性分析和定量测量，轧辊磨削表面缺陷检测系统对提升轧辊磨削表面质量及稳定性具有重要影响，具有紧迫的现实需求及可观的潜在应用。Due to the large volume and weight of the roll, it is difficult to grind and the grinding cycle is long. The operations related to the grinding process also require high manpower, material resources and time costs, which have a great impact on rolling production. In order to develop a qualitative analysis and quantitative measurement of defects such as spiral pattern, net pattern, color difference, and spots, the roll grinding surface defect detection system has an important impact on improving the quality and stability of the roll grinding surface, and has an urgent practical demand. and considerable potential applications.
发明内容Contents of the invention
本发明旨在至少在一定程度上解决上述技术问题之一。The present invention aims to solve one of the above-mentioned technical problems at least to a certain extent.
为此，本发明提出一种基于显微视觉的轧辊磨削表面缺陷检测系统，该基于显微视觉的轧辊磨削表面缺陷检测系统检测效率和准确率高。For this reason, the present invention proposes a roll grinding surface defect detection system based on microvision, which has high detection efficiency and accuracy.
根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统包括：照明模块，所述照明模块包括光源和透镜组件，所述光源发出来的光经过所述透镜组件折射后形成第一光路照射至所述轧辊磨削表面；显微摄像模块，所述显微摄像模块包括：显微镜头和相机模块，所述第一光路经所述轧辊磨削表面镜面反射或漫反射形成第二光路，所述第二光路被所述显微镜头聚焦后由所述相机模块转换成图像或视频信息；数据传输与处理模块，所述数据传输与处理模块通过数据传输模块接收所述图像或视频信息，对所述轧辊磨削表面的图像进行识别和处理，从而对所述轧辊磨削表面缺陷进行定性分析和定量测量。The roll grinding surface defect detection system based on microscopic vision according to the embodiment of the present invention includes: an illumination module, the illumination module includes a light source and a lens assembly, and the light emitted by the light source is refracted by the lens assembly to form a first The light path is irradiated to the roll grinding surface; the microscopic camera module, the microscopic camera module includes: a microscope lens and a camera module, and the first light path is specularly reflected or diffusely reflected by the roll grinding surface to form a second light path , the second optical path is converted into image or video information by the camera module after being focused by the microlens; a data transmission and processing module, the data transmission and processing module receives the image or video information through the data transmission module, The image of the roll grinding surface is identified and processed, so as to perform qualitative analysis and quantitative measurement on the roll grinding surface defects.
根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统可以快速且准确地检测轧辊磨削表面的缺陷，有效提升轧辊磨削表面质量及稳定性。The roll grinding surface defect detection system based on microscopic vision according to the embodiment of the present invention can quickly and accurately detect roll grinding surface defects, and effectively improve the quality and stability of the roll grinding surface.
另外，根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统，还可以具有如下附加的技术特征：In addition, the microvision-based roll grinding surface defect detection system according to the embodiment of the present invention may also have the following additional technical features:
根据本发明的一个实施例，所述第一光路在所述轧辊磨削表面形成圆形光斑或矩形光带。According to an embodiment of the present invention, the first optical path forms a circular light spot or a rectangular light strip on the grinding surface of the roll.
根据本发明的一个实施例，所述透镜组件包括多个透镜，多个所述透镜沿所述第二光路方向间隔设置。According to an embodiment of the present invention, the lens assembly includes a plurality of lenses, and the plurality of lenses are arranged at intervals along the direction of the second optical path.
根据本发明的一个实施例，所述光源发出的光为白光或单色光。According to an embodiment of the present invention, the light emitted by the light source is white light or monochromatic light.
根据本发明的一个实施例，所述数据传输模块为有线数据传输模块或无线数据传输模块。According to an embodiment of the present invention, the data transmission module is a wired data transmission module or a wireless data transmission module.
根据本发明的一个实施例，所述第一光路和所述第二光路相对所述轧辊磨削表面的照射区域的中心法线对称设置或非对称设置。According to an embodiment of the present invention, the first optical path and the second optical path are arranged symmetrically or asymmetrically with respect to the central normal of the irradiated area of the roll grinding surface.
根据本发明的一个实施例，所述第一光路的中心光路与所述第二光路的中心光路的夹角为α。According to an embodiment of the present invention, the angle between the central optical path of the first optical path and the central optical path of the second optical path is α.
根据本发明的一个实施例，所述α范围为0-160度。According to an embodiment of the present invention, the range of α is 0-160 degrees.
根据本发明的一个实施例，所述照明模块和所述显微摄像模块位于所述轧辊磨削表面的同一侧。According to an embodiment of the present invention, the illumination module and the micro camera module are located on the same side of the roll grinding surface.
根据本发明的一个实施例，所述照明模块和所述显微摄像模块在水平方向和竖直方向的位置可调节。According to an embodiment of the present invention, the positions of the illumination module and the micro camera module in the horizontal direction and the vertical direction are adjustable.
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
附图说明Description of drawings
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:
图1是根据本发明一个实施例的基于显微视觉的轧辊磨削表面缺陷检测系统的结构示意图；Fig. 1 is a structural schematic diagram of a roll grinding surface defect detection system based on micro vision according to an embodiment of the present invention;
图2是根据本发明另一个实施例的基于显微视觉的轧辊磨削表面缺陷检测系统的结构示意图。Fig. 2 is a structural schematic diagram of a microvision-based detection system for roll grinding surface defects according to another embodiment of the present invention.
附图标记：Reference signs:
照明模块10；光源11；透镜组件12；Lighting module 10; light source 11; lens assembly 12;
显微摄像模块20；显微镜头21；相机模块22；Micro camera module 20; Micro lens 21; Camera module 22;
数据传输与处理模块30；Data transmission and processing module 30;
轧辊200。Roll 200.
具体实施方式detailed description
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
下面参照图1-图2描述根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统，该轧辊200磨削表面缺陷检测系统可以实现对轧辊200磨削表面的螺旋纹、网纹、色差和斑点等缺陷进行定性分析和定量测量。The following describes a microscopic vision-based roll grinding surface defect detection system according to an embodiment of the present invention with reference to FIGS. 1-2 . Qualitative analysis and quantitative measurement of defects such as , chromatic aberration and spots.
如图1和图2所示，基于显微视觉的轧辊磨削表面缺陷检测系统大体可以包括：照明模块10、显微摄像模块20和数据传输与处理模块30。As shown in FIG. 1 and FIG. 2 , the roll grinding surface defect detection system based on microscopic vision generally includes: an illumination module 10 , a microscopic camera module 20 and a data transmission and processing module 30 .
具体地，照明模块10包括光源11和透镜组件12，光源11发出来的光经过透镜组件12折射后形成第一光路照射至轧辊200磨削表面。显微摄像模块20包括：显微镜头21和相机模块22，第一光路经轧辊200磨削表面镜面反射或漫反射形成第二光路，第二光路被显微镜头21聚焦后由相机模块22转换成图像或视频信息。Specifically, the lighting module 10 includes a light source 11 and a lens assembly 12 , and the light emitted by the light source 11 is refracted by the lens assembly 12 to form a first light path to illuminate the grinding surface of the roll 200 . The microscopic camera module 20 includes: a microlens 21 and a camera module 22. The first optical path is specularly reflected or diffusely reflected by the grinding surface of the roll 200 to form a second optical path, and the second optical path is converted into an image by the camera module 22 after being focused by the microlens 21 or video information.
数据传输与处理模块30通过数据传输模块接收图像或视频信息，对轧辊200磨削表面的图像进行识别和处理，从而对轧辊200磨削表面缺陷进行定性分析和定量测量。The data transmission and processing module 30 receives image or video information through the data transmission module, and recognizes and processes the image of the grinding surface of the roll 200, so as to perform qualitative analysis and quantitative measurement on the grinding surface defects of the roll 200.
根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统对轧辊200磨削表面缺陷进行检测时大体包括如下过程：首先将经过透镜组件12折射后的第一光路(平行光)照射至轧辊200磨削表面，使得轧辊200磨削表面形成圆形光斑或矩形光带，以起到提高轧辊200磨削表面亮度的作用，将轧辊200磨削表面的螺旋纹、网纹、色斑和色差等缺陷凸显出来，其中，光源11发出来的光以白光或单色光为佳，由此，可以进一步将轧辊200磨削表面的缺陷给显现出来。According to the microscopic vision-based roll grinding surface defect detection system according to the embodiment of the present invention, the detection of the roll 200 grinding surface defect generally includes the following process: first, the first light path (parallel light) refracted by the lens assembly 12 is irradiated To the grinding surface of the roll 200, so that the grinding surface of the roll 200 forms a circular light spot or a rectangular light band, so as to improve the brightness of the grinding surface of the roll 200, and the spiral pattern, net pattern, and color spot on the grinding surface of the roll 200 Defects such as chromatic aberration and chromatic aberration are highlighted, wherein the light emitted by the light source 11 is preferably white light or monochromatic light, thus, the defects on the grinding surface of the roll 200 can be further revealed.
接着经过轧辊200磨削表面发射的第二光路被显微镜头21采集，经过显微镜头21的聚焦、放大后由相机模块22转换成图像或视频信息，图像或视频信息传输至数据传输与处理模块，通过数据传输与处理模块30对轧辊200磨削表面的图像进行识别和处理，从而对轧辊200磨削表面缺陷进行定性分析和定量测量。Then the second optical path emitted by the grinding surface of the roller 200 is collected by the microlens 21, after being focused and enlarged by the microlens 21, it is converted into image or video information by the camera module 22, and the image or video information is transmitted to the data transmission and processing module, The image of the grinding surface of the roll 200 is recognized and processed through the data transmission and processing module 30, so as to perform qualitative analysis and quantitative measurement on the defects of the grinding surface of the roll 200.
也就是说，轧辊200磨削表面的缺陷通过显微摄像模块20被记录成图像或视频信息，经过数据传输与处理模块30的处理可以使得缺陷图像的特征增强，并根据需要对特征进行提取，从而使得轧辊200磨削表面缺陷得以有效地观测和测量。相比于传统人工检测方法而言，本发明实施例通过显微摄像模块20记录形成缺陷图像或视频信息，检测效率和准确率均大大提高，避免受到人工肉眼观测的主观性和局限性影响。That is to say, the defects on the grinding surface of the roll 200 are recorded as image or video information through the microscopic camera module 20, and after processing by the data transmission and processing module 30, the features of the defect image can be enhanced, and the features can be extracted as required, Therefore, the ground surface defects of the roll 200 can be effectively observed and measured. Compared with the traditional manual detection method, the embodiment of the present invention uses the microscopic camera module 20 to record and form defect images or video information, which greatly improves the detection efficiency and accuracy, and avoids the subjectivity and limitations of manual naked eye observation.
根据本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统可以快速且准确地检测轧辊200磨削表面的缺陷，有效提升轧辊200磨削表面质量及稳定性。The microscopic vision-based roll grinding surface defect detection system according to the embodiment of the present invention can quickly and accurately detect the defects on the grinding surface of the roll 200, and effectively improve the quality and stability of the grinding surface of the roll 200.
在本发明一些实施例中，如图1和图2所示，轧辊200磨削表面缺陷检测系统包括：照明模块10、显微摄像模块20和数据传输与处理模块30。其中，图像或视频信息通过有线数据传输模块传送至数据传输与处理模块30，有线数据传输模块可以为网线传输、USB传输、CamLink传输等方式In some embodiments of the present invention, as shown in FIGS. 1 and 2 , the grinding surface defect detection system of a roll 200 includes: an illumination module 10 , a microscopic camera module 20 and a data transmission and processing module 30 . Wherein, the image or video information is transmitted to the data transmission and processing module 30 through the wired data transmission module, and the wired data transmission module can be network cable transmission, USB transmission, CamLink transmission, etc.
具体地，照明模块10包括光源11和透镜组件12，光源11发出来的光经过透镜组件12折射后形成第一光路照射至轧辊200磨削表面。显微摄像模块20包括：显微镜头21和相机模块22，第一光路经轧辊200磨削表面反射形成第二光路，第二光路被显微镜头21聚焦后由相机模块22转换成图像或视频信息。第一光路的中心光路与第二光路的中心光路的夹角为α。Specifically, the lighting module 10 includes a light source 11 and a lens assembly 12 , and the light emitted by the light source 11 is refracted by the lens assembly 12 to form a first light path to illuminate the grinding surface of the roll 200 . The microscopic camera module 20 includes: a microlens 21 and a camera module 22. The first optical path is reflected by the grinding surface of the roll 200 to form a second optical path. The second optical path is focused by the microlens 21 and converted into image or video information by the camera module 22. The angle between the central optical path of the first optical path and the central optical path of the second optical path is α.
数据传输与处理模块30通过数据传输模块接收图像或视频信息，对轧辊200磨削表面的图像进行识别和处理，从而对轧辊200磨削表面缺陷进行定性分析和定量测量。The data transmission and processing module 30 receives image or video information through the data transmission module, and recognizes and processes the image of the grinding surface of the roll 200, so as to perform qualitative analysis and quantitative measurement on the grinding surface defects of the roll 200.
如图1所示，在明域(明场)照明的情形下，第一光路和第二光路相对轧辊200磨削表面的照射区域的中心法线对称设置，第一光路经过轧辊200磨削表面镜面反射形成第二光路。如图2所示，在暗域(暗场)照明的情形下，第一光路和第二光路相对轧辊200磨削表面的照射区域的中心法线非对称设置，第一光路经过轧辊200磨削表面漫反射形成第二光路。第一光路的中心光路与第二光路的中心光路的夹角为α。可选地，α范围为0-160度。As shown in Figure 1, in the situation of bright field (bright field) illumination, the first optical path and the second optical path are arranged symmetrically with respect to the center normal of the irradiation area of the grinding surface of the roll 200, and the first optical path passes through the grinding surface of the roll 200 The specular reflection forms the second light path. As shown in Figure 2, in the case of dark field (dark field) illumination, the first optical path and the second optical path are arranged asymmetrically with respect to the central normal of the irradiated area of the grinding surface of the roll 200, and the first optical path passes through the grinding of the roll 200. Diffuse reflection of the surface forms the second light path. The angle between the central optical path of the first optical path and the central optical path of the second optical path is α. Optionally, the range of α is 0-160 degrees.
其中，透镜组件12包括多个透镜，多个所透镜沿第二光路方向间隔设置。由此，可以保证光源11发出的来被充分地折射，保证轧辊200磨削表面缺陷被有效地凸显出来。Wherein, the lens assembly 12 includes a plurality of lenses, and the plurality of lenses are arranged at intervals along the direction of the second optical path. Thus, it can be ensured that the light emitted by the light source 11 is fully refracted, and the defects on the grinding surface of the roll 200 are effectively highlighted.
可选地，照明模块10和显微摄像模块20位于轧辊200磨削表面的同一侧。如图1所示，照明模块10和显微摄像模块20均位于轧辊200磨削表面的上侧。由此，可以使得基于显微视觉的轧辊磨削表面缺陷检测系统检测更方便，准确度更高。Optionally, the lighting module 10 and the micro camera module 20 are located on the same side of the grinding surface of the roll 200 . As shown in FIG. 1 , both the illumination module 10 and the micro camera module 20 are located on the upper side of the grinding surface of the roll 200 . Therefore, the detection system of the roll grinding surface defect detection system based on micro vision can be made more convenient and more accurate.
有利地，照明模块10和显微摄像模块20在水平方向和竖直方向的位置可调节。从而可以根据实际测量的情况调节照明模块10和显微摄像模块20在水平方向和竖直方向的位置，提高基于显微视觉的轧辊磨削表面缺陷检测系统的检测准确度。Advantageously, the positions of the illumination module 10 and the micro camera module 20 in the horizontal direction and the vertical direction can be adjusted. Therefore, the horizontal and vertical positions of the illumination module 10 and the microscopic camera module 20 can be adjusted according to actual measurement conditions, and the detection accuracy of the roll grinding surface defect detection system based on microscopic vision can be improved.
在本发明另一些实施例中，如图1和2所示，轧辊200磨削表面缺陷检测系统包括：照明模块10、显微摄像模块20和数据传输与处理模块30。其中，图像或视频信息通过有线数据传输模块传送至数据传输与处理模块30，无线数据传输模块可以为WIFI或蓝牙数据传输模块。In other embodiments of the present invention, as shown in FIGS. 1 and 2 , the grinding surface defect detection system of a roll 200 includes: an illumination module 10 , a microscopic camera module 20 and a data transmission and processing module 30 . Wherein, the image or video information is transmitted to the data transmission and processing module 30 through the wired data transmission module, and the wireless data transmission module can be a WIFI or Bluetooth data transmission module.
具体地，照明模块10包括光源11和透镜组件12，光源11发出来的光经过透镜组件12折射后形成第一光路照射至轧辊200磨削表面。显微摄像模块20包括：显微镜头21和相机模块22，第一光路经轧辊200磨削表面反射形成第二光路，第二光路被显微镜头21聚焦后由相机模块22转换成图像或视频信息。如图1所示，在明域(明场)照明的情形下，第一光路和第二光路相对轧辊200磨削表面的照射区域的中心法线对称设置，第一光路经过轧辊200磨削表面镜面反射形成第二光路。如图2所示，在暗域(暗场)照明的情形下，第一光路和第二光路相对轧辊200磨削表面的照射区域的中心法线非对称设置，第一光路经过轧辊200磨削表面漫反射形成第二光路。第一光路的中心光路与第二光路的中心光路的夹角为α。可选地，α范围为0-160度。Specifically, the lighting module 10 includes a light source 11 and a lens assembly 12 , and the light emitted by the light source 11 is refracted by the lens assembly 12 to form a first light path to illuminate the grinding surface of the roll 200 . The microscopic camera module 20 includes: a microlens 21 and a camera module 22. The first optical path is reflected by the grinding surface of the roll 200 to form a second optical path. The second optical path is focused by the microlens 21 and converted into image or video information by the camera module 22. As shown in Figure 1, in the situation of bright field (bright field) illumination, the first optical path and the second optical path are arranged symmetrically with respect to the center normal of the irradiation area of the grinding surface of the roll 200, and the first optical path passes through the grinding surface of the roll 200 The specular reflection forms the second light path. As shown in Figure 2, in the case of dark field (dark field) illumination, the first optical path and the second optical path are arranged asymmetrically with respect to the central normal of the irradiated area of the grinding surface of the roll 200, and the first optical path passes through the grinding of the roll 200. Diffuse reflection of the surface forms the second light path. The angle between the central optical path of the first optical path and the central optical path of the second optical path is α. Optionally, the range of α is 0-160 degrees.
数据传输与处理模块30通过数据传输模块30接收图像或视频信息，对轧辊200磨削表面的图像进行识别和处理，从而对轧辊200磨削表面缺陷进行定性分析和定量测量。The data transmission and processing module 30 receives image or video information through the data transmission module 30, and recognizes and processes the image of the grinding surface of the roll 200, so as to perform qualitative analysis and quantitative measurement on the grinding surface defects of the roll 200.
其中，透镜组件12包括多个透镜，多个所透镜沿第二光路方向间隔设置。由此，可以保证光源11发出的来被充分地折射，保证轧辊200磨削表面缺陷被有效地凸显出来。Wherein, the lens assembly 12 includes a plurality of lenses, and the plurality of lenses are arranged at intervals along the direction of the second optical path. Thus, it can be ensured that the light emitted by the light source 11 is fully refracted, and the defects on the grinding surface of the roll 200 are effectively highlighted.
可选地，照明模块10和显微摄像模块20位于轧辊200磨削表面的同一侧。照明模块10和显微摄像模块20在水平方向和竖直方向的位置可调节。Optionally, the lighting module 10 and the micro camera module 20 are located on the same side of the grinding surface of the roll 200 . The positions of the illumination module 10 and the micro camera module 20 in the horizontal direction and the vertical direction can be adjusted.
下面描述根据本发明一个具体实施例的基于显微视觉的轧辊磨削表面缺陷检测系统的检测过程。The detection process of the roll grinding surface defect detection system based on micro vision according to a specific embodiment of the present invention is described below.
参照图1，本发明实施例的基于显微视觉的轧辊磨削表面缺陷检测系统的操作与检测方法为：第一根据被测轧辊200尺寸与待检测缺陷情况，选择显微摄像系统合适的放大倍数，并初步调整其与被测轧辊200表面待测区域的垂直距离h；第二调整照明系统和显微摄像系统之间的距离d及二者各自的倾角β1、β2使照明系统发射光路中心与显微摄像系统接收光路中心之间成一特定夹角α；第三固定照明系统，结合显微图像显示情况对显微摄像系统进行微调以获得清晰的显微图像，并对显微镜头21放大倍数进行标定；第四对轧辊200表面进行测量，可以直接通过实时的显微图像和/或图像增强实时处理后的显微图像进行定性判断，同时可以通过缺陷显微特征提取等图像处理得到定性与定量检测结果；第五通过机械系统带动照明系统与显微摄像系统整体运动和/或被测轧辊200旋转测量轧辊200表面不同区域，这一过程中一般不需对检测系统进行重新调整与标定。With reference to Fig. 1, the operation and detection method of the roll grinding surface defect detection system based on microscopic vision in the embodiment of the present invention are as follows: firstly, according to the size of the roll 200 to be tested and the defect situation to be detected, select the appropriate magnification of the microscopic camera system multiple, and preliminarily adjust the vertical distance h between it and the area to be measured on the surface of the roll 200 to be tested; secondly adjust the distance d between the lighting system and the microscopic camera system and their respective inclination angles β 1 and β 2 to make the lighting system emit There is a specific angle α between the center of the optical path and the center of the receiving optical path of the microscopic camera system; the third fixed lighting system fine-tunes the microscopic camera system in combination with the microscopic image display to obtain a clear microscopic image, and adjusts the microscopic lens 21 The magnification is calibrated; the fourth is to measure the surface of the roll 200, which can be directly judged qualitatively through real-time microscopic images and/or image-enhanced microscopic images after real-time processing, and can be obtained through image processing such as defect microscopic feature extraction. Qualitative and quantitative testing results; fifth, through the mechanical system to drive the overall movement of the lighting system and the microscopic camera system and/or the rotation of the tested roll 200 to measure different areas on the surface of the roll 200, it is generally not necessary to readjust the detection system and calibration.
在本发明的描述中，需要理解的是，术语“上”、“下”“、底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "inner" and "outer" are based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "below" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is less horizontal than the second feature.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations to the present invention. Variations, modifications, substitutions, and modifications to the above-described embodiments are possible within the scope of the present invention.
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| CN107576664A (en) * | 2017-09-28 | 2018-01-12 | 清华大学 | A kind of roll dressing surface defect Machine Vision Inspecting System |
| CN113165041A (en) * | 2018-11-29 | 2021-07-23 | 杰富意钢铁株式会社 | Defect grinding method for round steel and method for manufacturing steel |
| CN113165041B (en) * | 2018-11-29 | 2022-11-01 | 杰富意钢铁株式会社 | Defect grinding method for round steel and method for manufacturing steel |
| CN112122366A (en) * | 2019-06-25 | 2020-12-25 | 宝山钢铁股份有限公司 | Hot roll surface online detection system and detection method thereof |
| WO2021031603A1 (en) * | 2019-08-16 | 2021-02-25 | 研祥智能科技股份有限公司 | Method for detecting defect in led support, image-capturing apparatus, and device for detecting defect in led support |
| CN110836857A (en) * | 2019-11-19 | 2020-02-25 | 杭州深度视觉科技有限公司 | Detection system and detection method for super-precision grinding characteristics |
| CN112415023A (en) * | 2020-11-10 | 2021-02-26 | 浙江夏厦精密制造股份有限公司 | Detection method and device for representing grinding lines of columnar parts |
| CN113231480A (en) * | 2021-06-04 | 2021-08-10 | 河南明晟新材料科技有限公司 | Method for rapidly detecting black wire and black line on surface of aluminum coil on line |
| CN117197054A (en) * | 2023-08-22 | 2023-12-08 | 盐城工学院 | Display panel dead pixel detection method and system based on artificial intelligence |
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Inventor after: Yang Jun Inventor after: Jiang Sheng Inventor after: Li Xuekun Inventor after: Wang Liping Inventor after: Zhu Shuping Inventor after: Chen Zhanying Inventor after: Lou Changgui Inventor after: Xu Jirui Inventor after: Zhou Yujiao Inventor after: Zhang Yun Inventor before: Yang Jun Inventor before: Li Xuekun Inventor before: Chen Zhanying Inventor before: Xu Jirui Inventor before: Wang Zhen Inventor before: Lou Changgui Inventor before: Zhou Yujiao |
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Address after: 100084 Beijing City, Haidian District Tsinghua Yuan Applicant after: Tsinghua University Applicant after: Huachen precision equipment (Kunshan) Limited by Share Ltd Address before: 100084 Beijing City, Haidian District Tsinghua Yuan Applicant before: Tsinghua University Applicant before: Kunshan Huachen Heavy Machinery Co., Ltd. |
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Application publication date: 20170510 |