A method and device for detecting the quality grade of a strip

Abstract

The embodiments of the present application relate to the technical field of plate and strip quality inspection, and specifically, to a method and device for inspecting the quality grade of a plate and strip, the method comprising: dividing the plate and strip into a plurality of inspection partitions along a first direction, and then wiping each inspection partition; obtaining grayscale data of each inspection partition after wiping; splicing multiple groups of grayscale data according to the arrangement order of the inspection partitions and performing preset processing to determine the current grayscale gradient data of the plate and strip; obtaining the preset quality standard of the plate and strip, and determining the quality grade of the plate and strip according to the current grayscale gradient data and the preset quality standard, so that after the wiping of the plate and strip is completed, the surface quality of the plate and strip can be quickly and intuitively known, which is convenient for determining the subsequent processing of the plate and strip.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of plate and strip quality detection, and specifically, to a method and device for detecting the quality grade of a plate and strip. Background Art

[0002] Tin plating of plates and strips is an important part of the production process of plates and strips, especially the last process before the plates and strips are delivered to manufacturers. Tin plating of plates and strips is easily affected by environmental factors, production factors, tin plating process and other conditions, resulting in the formation of tin ash on the surface of the plates and strips. Although the tin ash can be eliminated by wiping the surface, in the production of wide and ultra-wide strips, the tin ash phenomenon has different characteristics of distribution in the first direction due to the influence of the length of the plates and strips in the first direction.

[0003] In the related art, after the strip is tinned, the Changtong factory uses a wiping roller to wipe the strip, and applies a load to the strip by the wiping roller to achieve tin ash erasing. However, after wiping, the finished strip is still prone to uneven distribution of tin ash, and the quality grade of the strip after wiping cannot be determined, which can easily lead to customers' objections to the quality of the strip. Summary of the Invention

[0004] The embodiments of the present application provide a method and device for detecting the quality grade of a plate and strip, aiming to solve the problem of being unable to determine the quality grade of the plate and strip.

[0005] A first aspect of an embodiment of the present application provides a method for detecting the quality grade of a plate strip, the method comprising:

[0006] After dividing the strip into a plurality of inspection zones along a first direction, wiping each of the inspection zones;

[0007] Obtaining grayscale data of each detection partition after wiping;

[0008] splicing the plurality of groups of grayscale data according to the arrangement order of the detection partitions and performing preset processing to determine the current grayscale gradient data of the strip;

[0009] The preset quality standard of the strip is obtained, and the quality grade of the strip is determined according to the current grayscale gradient data and the preset quality standard.

[0010] Optionally, wiping each of the detection zones includes:

[0011] A plurality of wiping modules are used to apply pressure to one end of each detection zone respectively, and move from one end to the other end along the second direction of the plate strip, so as to wipe each detection zone.

[0012] Optionally, the method further includes:

[0013] During the process of applying pressure, obtaining pressure feedback values of the wiping modules on the respective detection zones;

[0014] Determining the extreme pressure differences between the plurality of groups of wiping modules according to the plurality of pressure feedback values;

[0015] When it is detected that the pressure extreme difference value is greater than the preset pressure extreme difference value, controlling the wiping module corresponding to the minimum pressure feedback value to continue applying pressure;

[0016] Repeat the above steps until the pressure extreme difference value is less than or equal to the preset pressure extreme difference value.

[0017] Optionally, the method further includes:

[0018] During the wiping process, the grayscale values of each detection partition in the same first direction are synchronously acquired;

[0019] Determine grayscale extreme difference values between multiple groups of wiping modules according to the multiple grayscale values;

[0020] When it is detected that the grayscale extreme difference value is greater than the preset grayscale extreme difference value, controlling the wiping module corresponding to the minimum grayscale value to continue applying pressure;

[0021] Repeat the above steps until the grayscale extreme difference value is less than or equal to the preset grayscale extreme difference value.

[0022] Optionally, obtaining grayscale data of each detection partition after wiping includes:

[0023] irradiating the wiped detection partition with a light source;

[0024] Acquire a reflected light image at each position of the detection zone under illumination of the light source;

[0025] The grayscale data is determined according to the reflected light image.

[0026] Optionally, multiple groups of the grayscale data are spliced according to the arrangement order of the detection partitions and subjected to preset processing to determine the current grayscale gradient data of the strip, including:

[0027] During the wiping process, the reflected light images of the respective detection partitions in the same first direction are synchronously acquired;

[0028] determining the grayscale data of each detection partition in the same first direction according to the reflected light image;

[0029] The plurality of groups of grayscale data are spliced according to the arrangement order of the plurality of groups of detection partitions, and are subjected to preset processing to obtain the current grayscale gradient data marking the tin ash portion of the entire plate strip.

[0030] Optionally, the preset processing includes determining the current grayscale gradient data according to the grayscale data according to a preset formula, and the preset formula may be:

[0031] gradI=(I i -I i+k ) / k

[0032] Where gradI is the current grayscale gradient data, k is the pixel distance between two adjacent wiping marks, Ii is the grayscale data of any detection partition, I i+k The grayscale data of another adjacent detection partition.

[0033] Optionally, the method further includes:

[0034] Obtaining standard grayscale gradient data of the plate strip in a tin-free ash condition;

[0035] Dividing the preset grayscale difference between the data and the standard grayscale gradient data into a plurality of intervals according to the preset gradient, and corresponding each of the intervals to a different quality level to determine the preset quality standard;

[0036] Obtaining a preset quality standard of the strip, and determining a quality grade of the strip according to the current grayscale gradient data and the preset quality standard, including:

[0037] The preset quality standard of the strip is obtained, the interval corresponding to the current grayscale gradient data in the preset quality standard is determined, and the quality grade corresponding to the interval is determined as the quality grade of the strip.

[0038] Optionally, before dividing the strip into a plurality of detection zones along the first direction according to a preset arrangement order, the method further includes:

[0039] Detecting whether the flatness of the strip reaches a preset flatness;

[0040] When it is detected that the flatness does not reach the preset flatness, the plate strip is flattened until the flatness reaches the preset flatness.

[0041] A second aspect of the present application provides a strip quality grade detection device, the detection device comprising:

[0042] a wiping module, configured to divide the strip into a plurality of inspection zones along a first direction according to a preset arrangement order, and then wipe each of the inspection zones;

[0043] An acquisition module, configured to acquire grayscale data of each detection partition after wiping;

[0044] a processing module, configured to splice the plurality of grayscale data sets according to the arrangement order of the detection partitions and perform preset processing to determine the current grayscale gradient data of the strip;

[0045] The determination module is used to obtain the preset quality standard of the plate strip and determine the quality grade of the plate strip according to the current grayscale gradient data and the preset quality standard.

[0046] Optionally, a mounting portion is provided on the sample platform for sliding along the second direction, and multiple groups of the wiping modules are arranged side by side on the mounting portion along the second direction. The wiping module includes a wiping head that slides along the vertical direction, and a pressing mechanism for driving the wiping head to slide, which is used to apply pressure to one end of each of the detection partitions through multiple groups of wiping modules, and move from one end to the other end along the second direction of the plate strip to achieve wiping of each of the detection partitions.

[0047] Optionally, the detection device further includes:

[0048] The pressure acquisition module is used to obtain pressure feedback values of the plurality of wiping modules on the respective detection zones.

[0049] Optionally, the acquisition module includes:

[0050] a light source, the light source being arranged on a side away from the wiping direction, and being used for irradiating the detection partition after wiping through the light source;

[0051] An image acquisition device is provided on a side away from the wiping direction, and is used to acquire reflected images of various positions of the detection zone under the illumination of the light source.

[0052] A plate and strip quality grade detection method and device provided in the present application are adopted. When wiping the plate and strip, multiple groups of wiping modules are used to wipe each detection zone of the entire plate and strip at the same time. While wiping, grayscale data representing the tin ash distribution of each detection zone is obtained. Then, the grayscale data of each detection zone are spliced according to the arrangement of the detection zones, and processed according to a preset processing method, so as to obtain grayscale gradient data representing the tin ash distribution of the entire plate and strip after wiping. Then, according to the preset quality standard determined in advance, the quality grade corresponding to the grayscale gradient data of the currently wiped plate and strip in the preset quality standard is determined, so that after the wiping of the plate and strip is completed, the surface quality of the plate and strip can be quickly and intuitively known, which is convenient for determining the subsequent processing of the plate and strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0054] Figure 1 1 is a flow chart of a detection method proposed in one embodiment of the present application;

[0055] Figure 2 This is a schematic diagram of a process for adjusting pressure based on pressure feedback proposed in one embodiment of the present application;

[0056] Figure 3 This is a schematic diagram of a process for adjusting pressure based on grayscale feedback proposed in one embodiment of the present application;

[0057] Figure 4 This is a schematic diagram of a process for determining grayscale data proposed in an embodiment of the present application;

[0058] Figure 5 This is a schematic diagram of a process for determining current grayscale gradient data proposed in an embodiment of the present application;

[0059] Figure 6 This is a flowchart of determining a preset quality standard proposed in one embodiment of the present application;

[0060] Figure 7 This is a schematic diagram of a process for adjusting flatness proposed in one embodiment of the present application;

[0061] Figure 8 This is a schematic diagram of a module of a detection device proposed in one embodiment of the present application;

[0062] Figure 9 is a side view of a specific embodiment of the detection device proposed in one embodiment of the present application;

[0063] Figure 10 It is a top view of a specific embodiment of the detection device proposed in one embodiment of the present application.

[0064] Figure numbers: 7, detection device; 71, wiping module; 711, wiping head; 712, pressing mechanism; 72, acquisition module; 721, light source; 722, image acquisition device; 73, processing module; 74, determination module; 75, pressure adjustment module; 76, leveling module; 8, sample platform; 81, installation part. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0066] Tin plating of plates and strips is an important part of the production process of plates and strips, especially the last process before the plates and strips are delivered to manufacturers. Tin plating of plates and strips is easily affected by environmental factors, production factors, tin plating process and other conditions, resulting in the formation of tin ash on the surface of the plates and strips. Although the tin ash can be eliminated by wiping the surface, in the production of wide and ultra-wide strips, the tin ash phenomenon has different characteristics of distribution in the first direction due to the influence of the length of the plates and strips in the first direction.

[0067] In the related art, after the strip is tinned, the long-pass factory uses a wiping roller to wipe the strip, and applies a load to the strip by the wiping roller to achieve tin ash erasure. However, although the tin ash can be eliminated by surface wiping, in the production of wide and ultra-wide strips, the tin ash phenomenon is affected by the length of the strip in the first direction, and there are also differences in the distribution of the tin ash in the first direction. After wiping, the finished strip is still prone to uneven distribution of tin ash, and the quality grade of the strip after wiping cannot be determined, which can easily lead to customers' objections to the quality of the strip, and it is also impossible to determine how to deal with the strip subsequently.

[0068] In view of this, the first aspect of the present application provides a method for detecting the quality grade of a plate or strip.

[0069] Example 1

[0070] A method for detecting the quality grade of a plate and strip, referring to Figure 1 , methods include:

[0071] S1, dividing the strip into a plurality of inspection zones along a first direction according to a preset arrangement order, and wiping each inspection zone;

[0072] The strip is placed on a sample platform, wherein the wiping direction of the strip is the first direction of the sample platform, and the second direction is perpendicular to the first direction. Multiple groups of wiping modules are slidingly arranged on the sample platform along the second direction, and the multiple groups of wiping modules are arranged side by side and move synchronously. The strip is evenly divided into multiple groups of detection partitions along the first direction, and the wiping modules are located between two adjacent groups of detection partitions. For example, in this embodiment, there are (n-1) groups of wiping modules, and the detection partitions are set to n groups, that is, the number of wiping module groups wiping the strip is one group less than the number of detection partition groups. Pressure is applied to the strip by the wiping modules, and the multiple groups of wiping modules move synchronously from one end of the strip to the other end along the second direction of the strip to achieve wiping of the strip.

[0073] S2, obtaining the grayscale data of each detection partition after wiping;

[0074] Among them, multiple groups of acquisition modules for acquiring the surface image of the plate and strip are arranged on the sample platform. Each group of acquisition modules corresponds to the detection partition of the plate and strip, and when the wiping module moves, the acquisition module moves together with the wiping module in the same direction, so as to acquire the image of the plate and strip surface after wiping. By identifying and processing the image, grayscale data representing the distribution of tin ash on the surface of each detection partition after wiping is obtained.

[0075] S3, splicing multiple sets of grayscale data according to the arrangement order of the detection partitions and performing preset processing to determine the current grayscale gradient data of the strip;

[0076] When the entire plate strip is completely wiped, the grayscale data of all detection partitions are spliced according to the arrangement order of the detection partitions, and the spliced image is processed by preset processing, including edge removal, etc., so as to obtain the current grayscale gradient data representing the distribution of tin ash on the surface of the entire plate strip after wiping.

[0077] The splicing can be performed after the entire strip is completely wiped, or it can be performed in real time during the wiping process, and finally the complete current grayscale gradient data can be obtained.

[0078] S4, obtaining the preset quality standard of the strip, and determining the quality grade of the strip according to the current grayscale gradient data and the preset quality standard.

[0079] Among them, the preset quality standard is based on the base color of the Wuxi gray plate and strip, and a corresponding chart of different tin ash distributions on the plate and strip corresponding to different quality grades. Specifically, it can be the difference between the grayscale gradient data of different tin ash distributions and the tin ash distribution data of the Wuxi gray plate and strip. It is divided into multiple intervals according to a certain preset interval or gradient, and each interval corresponds to a different quality grade.

[0080] After obtaining the current grayscale gradient data, the current grayscale gradient data is compared with the grayscale gradient data of the background color of the Wuxi gray strip, and the obtained grayscale difference is compared with the preset quality standard to determine the quality level of the strip after wiping.

[0081] Multiple groups of wiping modules are used to wipe each inspection zone of the entire plate strip at the same time. While wiping, the grayscale data representing the tin ash distribution of each inspection zone is obtained. The grayscale data of each inspection zone are then spliced according to the arrangement of the inspection zones and processed according to a preset processing method, thereby obtaining grayscale gradient data representing the tin ash distribution of the entire plate strip after wiping. Then, according to a preset quality standard determined in advance, the quality level corresponding to the grayscale gradient data of the currently wiped plate strip in the preset quality standard is determined, so that after the wiping of the plate strip is completed, the surface quality of the plate strip can be quickly and intuitively known, which is convenient for determining the subsequent processing of the plate strip.

[0082] In some embodiments, wiping each detection zone includes:

[0083] A plurality of wiping modules are used to apply pressure to one end of each detection zone respectively, and move from one end to the other end along the second direction of the plate strip to achieve wiping of each detection zone.

[0084] The wiping is completed on the sample platform. A wiping module is provided on the sample platform for sliding along the second direction. When wiping the plate strip, the plate strip is first placed on the sample platform, between the wiping module and the plate strip platform. The wiping module is driven down to contact the plate strip and apply a certain pressure. Then the wiping module is driven to move along the second direction toward the other end of the plate strip to achieve wiping of the plate strip and improve the wiping effect.

[0085] In some embodiments, reference Figure 2 , the method further comprises:

[0086] S101, obtaining pressure feedback values of multiple groups of wiping modules on respective detection zones during the process of applying pressure;

[0087] Since the thickness of the plate and strip surface may be uneven and the thickness of the tin ash may be uneven, in order to reduce the uneven distribution of tin ash caused by different wiping modules between the various detection zones of the plate and strip during wiping, it is necessary to adjust the contact pressure between the wiping module and the plate and strip so that each detection zone is wiped by the wiping module with the same pressure. Therefore, before wiping, the pressure detection module is used to detect the pressure feedback value P of each group of wiping modules on the plate. 0i , used to determine whether the pressure of each group of wiping modules on the strip is the same.

[0088] S102, determining the pressure extreme difference values between the multiple groups of wiping modules according to the multiple pressure feedback values;

[0089] Calculate multiple sets of pressure feedback values P 0i The pressure difference value △P 0i , that is, the difference between the maximum pressure feedback value and the minimum pressure feedback value, so as to determine whether the pressure values between multiple groups of wiping modules and the plate strip are similar.

[0090] S103, when it is detected that the pressure extreme difference value is greater than the preset pressure extreme difference value, controlling the wiping module corresponding to the minimum pressure feedback value to continue applying pressure;

[0091] In this embodiment, the pressure difference value can be 1kN, that is, when △P is detected 0i When it is >1kN, the wiping module corresponding to the minimum pressure feedback value is controlled to continue to apply pressure to reduce the pressure extreme difference value △P 0i The pressure values between each group of wiping modules and the plate strip are made similar, so as to reduce the occurrence of uneven distribution of tin ash in the first direction of the plate strip after wiping.

[0092] Depending on the actual situation, such as different materials, requirements and other conditions, the preset pressure range value can be determined as other values based on the actual situation.

[0093] S104, repeat the above steps until the pressure extreme difference value is less than or equal to the preset pressure extreme difference value.

[0094] After the adjustment is completed, the pressure feedback value P of each group of wiping modules is obtained again. 0i And recalculate the pressure extreme difference value △P 0i , judge whether △P 0i Still greater than 1kN, still satisfies △P 0i When it is >1kN, the wiping module corresponding to the new minimum pressure feedback value after adjustment is controlled to continue to apply pressure until the pressure extreme difference value is less than or equal to the preset pressure extreme difference value. At this time, the pressure values of each group of wiping modules on the plate and strip are similar, and the wiping effects are also similar, thereby achieving the effect of reducing the uneven distribution of tin ash in the first direction of the plate and strip after wiping.

[0095] In some embodiments, reference Figure 3 , the method further comprises:

[0096] S201, during the wiping process, synchronously obtaining the grayscale values of each detection partition in the same first direction;

[0097] During the wiping process of the strip, multiple groups of wiping modules wipe the strip synchronously. In order to ensure that the tin ash distribution in the first direction of the strip is uniform after wiping, it is necessary to confirm the tin ash distribution in the first direction of the strip after wiping. Therefore, after wiping, the image of the wiped position of each detection zone in the first direction of the strip is obtained, and the gray value I of the wiped position is determined based on the image. 0i It is used for subsequent comparison and judgment. The larger the grayscale value, the better the wiping effect, and the smaller the grayscale value, the more tin ash residue.

[0098] S202, determining grayscale extreme differences between multiple groups of wiping modules based on multiple grayscale values;

[0099] Calculate multiple sets of grayscale values I0i Grayscale extreme difference value △I 0i , that is, the difference between the maximum grayscale value and the minimum grayscale value, so as to determine the difference in tin ash distribution between multiple groups of detection partitions after wiping.

[0100] S203, when it is detected that the grayscale extreme difference value is greater than the preset grayscale extreme difference value, controlling the wiping module corresponding to the minimum grayscale value to continue applying pressure;

[0101] In this embodiment, the preset grayscale extreme difference value can be 5. 0i When it is >5, it can be considered that the tin ash distribution between the multiple groups of detection partitions after wiping is quite different, that is, the tin ash wiping effect of some detection partitions is poor, so it is necessary to improve the wiping effect of the detection partition with the smallest grayscale value. Therefore, the pressure of the wiping module corresponding to the minimum grayscale value is increased to improve the wiping effect.

[0102] Depending on the actual situation, such as different materials, requirements or light conditions, the preset grayscale range value can be determined as other values based on the actual situation.

[0103] S204, repeat the above steps until the grayscale range value is less than or equal to the preset grayscale range value.

[0104] During the wiping process, the grayscale extreme value is detected in real time. After the pressure of the wiping module is adjusted, △I 0i If it is still greater than 5, it can be considered that there are still other detection partitions with poor wiping effects. Therefore, the pressure of the wiping module corresponding to the new minimum grayscale value is increased again until the grayscale range value is less than or equal to the preset grayscale range value, thereby improving the wiping effect and effectively reducing the tin ash distribution difference in the first direction of the plate and strip.

[0105] In some embodiments, reference Figure 4 , obtain the grayscale data of each detection partition after wiping, including:

[0106] S301, irradiating the wiped detection partition with a light source;

[0107] In this embodiment, when inspecting the wiped inspection partitions, in order to ensure that the brightness of the images is the same when acquiring images, each inspection partition is illuminated by a light source with the same brightness and illumination angle when acquiring images.

[0108] S302, obtaining a reflection image of each position of the detection zone under illumination of a light source;

[0109] The image formed by the light reflected from the light source of the plate strip is obtained by an image acquisition device of the same model. Specifically, the illumination angle θ1 between the light source and the plate strip is the same as the angle θ2 at which the image acquisition device acquires the light, to ensure that the luminosity, brightness and other conditions of the plate image in each detection partition are the same.

[0110] S303: Determine grayscale data according to the reflected light image.

[0111] The acquired image is processed and converted into a grayscale image. Different tin ash distributions result in different grayscales reflected on the grayscale image, thereby obtaining grayscale data representing the tin ash distribution of the plate and strip after wiping.

[0112] In some embodiments, reference Figure 5 , multiple sets of grayscale data are spliced in the order of the detection partitions and pre-processed to determine the current grayscale gradient data of the strip, including:

[0113] S401, during the wiping process, synchronously acquiring reflection images of each detection partition in the same first direction;

[0114] During the wiping process, the reflected light images formed by the reflected light at the position of each inspection zone of the plate strip after wiping under the illumination of the light source are obtained in real time, and the reflected light images are uploaded and stored in real time to obtain the reflected light images of the continuous inspection zones.

[0115] S402, determining grayscale data of each detection partition in the same first direction according to the reflected light image;

[0116] The obtained reflected image is processed and converted into a grayscale image reflecting the color depth. The less tin ash, the higher the grayscale value. After processing, grayscale data reflecting the distribution amount of tin ash in each detection zone can be obtained in real time.

[0117] S403, splicing the multiple groups of grayscale data according to the arrangement order of the multiple groups of detection partitions, and performing preset processing to obtain current grayscale gradient data marking the tin ash division of the entire plate strip.

[0118] According to the order of clearing the detection partitions, the grayscale data of each detection partition are arranged in sequence and merged. After the entire strip is completely wiped, the grayscale data reflecting the distribution of tin ash on the entire strip surface can be obtained. The grayscale after splicing is matrixed to obtain the current grayscale matrix data A of the tin ash strip. mn , where the current gray matrix data A mn Including the grayscale data I of each detection partition i , according to the current gray matrix data A mn , calculated using the following formula:

[0119] gradI=(I i-I i+k ) / k

[0120] Where k is the pixel distance between two adjacent detection intervals, so that the current gray gradient data marking the tin ash distribution of the entire plate strip can be obtained.

[0121] In some embodiments, reference Figure 6 , the method further comprises:

[0122] S501, obtaining standard grayscale gradient data of the strip in the absence of tin ash;

[0123] Before inspecting the strip, first prepare a Wuxi gray strip as a standard, obtain its image data and convert it into grayscale data, so as to determine the standard grayscale gradient data of the Wuxi gray strip, and then determine the standard grayscale gradient data of the Wuxi gray strip based on the standard grayscale gradient data, which is used as the standard for the strip with the highest quality grade.

[0124] S502, dividing the preset grayscale difference between the data and the standard grayscale gradient data into a plurality of intervals according to the preset gradient, and corresponding each interval to a different quality level to determine a preset quality standard;

[0125] According to the different tin ash distribution of the plate and strip, the standard grayscale gradient data is used as a benchmark, and the grayscale gradient is divided into multiple grayscale gradient intervals according to the preset intervals. Different grayscale gradient intervals correspond to different quality grades, thereby obtaining a chart for judging the quality grade of the plate and strip based on the grayscale gradient data, which is the preset quality standard.

[0126] Obtain the preset quality standard of the strip and determine the quality grade of the strip based on the current grayscale gradient data and the preset quality standard, including:

[0127] The preset quality standard of the plate strip is obtained, the interval corresponding to the current gray gradient data in the preset quality standard is determined, and the quality grade corresponding to the interval is determined as the quality grade of the plate strip.

[0128] Taking the standard grayscale gradient data of Wuxi gray plate and strip as the benchmark, by comparing the current grayscale gradient data with the corresponding interval in the preset quality standard, the quality grade of the plate and strip compared with Wuxi gray plate and strip is determined, making the process of determining the quality grade more convenient and accurate.

[0129] In some embodiments, reference Figure 7 Before dividing the strip into a plurality of detection zones along the first direction according to a preset arrangement order, the method further includes:

[0130] S601, checking whether the flatness of the strip reaches a preset flatness;

[0131] When wiping the plate strip, it is necessary to wipe from one side to the other with a certain pressure. Therefore, it is necessary to ensure that the surface flatness of the plate strip meets the requirements to avoid affecting the wiping effect of the plate strip. Therefore, the flatness of the plate strip is detected before wiping. In this embodiment, the presence of visible waviness or wave shape can be observed with the naked eye, and other instruments such as a level can also be used for detection to further determine the flatness of the plate.

[0132] S602: When it is detected that the flatness does not reach the preset flatness, the plate strip is flattened until the flatness reaches the preset flatness.

[0133] If the plate has visible waviness or wavy shape, it can be considered that the plate strip cannot be wiped normally, so the plate strip is flattened, for example, by pressing it with a pressure roller to eliminate the deformation of the plate strip, thereby effectively improving the wiping effect on the plate strip.

[0134] Example 2

[0135] Based on the same inventive concept, another embodiment of the present application provides a strip quality grade detection device, referring to Figure 8 、 Figure 9 and Figure 10 , the detection device 7 comprises:

[0136] A wiping module 71 is used to divide the strip into a plurality of inspection zones along a first direction according to a preset arrangement order, and then wipe each inspection zone;

[0137] Reference Figure 9 and Figure 10 , wherein an area divided by a dotted line wiped by each group of wiping modules 71 along the second direction is a detection zone, and multiple detection zones are evenly distributed along the first direction.

[0138] The detection device 7 includes a sample platform 8, a wiping module 71 is arranged above the sample platform 8, a mounting portion 81 is provided on the sample platform 8, and the mounting portion 81 is arranged to move along the second direction of the sample platform 8. The wiping module 71 is provided in multiple groups and is arranged side by side on the mounting portion 81. The wiping module 71 includes a wiping head 711 and a pressing mechanism 712. The pressing mechanism 712 is arranged on the mounting portion 81. In some embodiments, the mounting portion 81 may include a mounting rod, and the wiping modules 71 are all installed under the mounting rod. The mounting rod is driven by one or more driving mechanisms, such as a motor screw mechanism or a sprocket driving mechanism.

[0139] The wiping head 711 is arranged below the pressing mechanism 712. When the plate strip is located on the sample platform 8, the pressing mechanism 712 drives the wiping head 711 to move downward to contact the plate strip, and then the mounting part 81 is driven to move to wipe the plate strip through the wiping module 71.

[0140] In a specific embodiment, the pressing mechanism 712 may include a hydraulic cylinder or a motor screw mechanism to control the up and down movement of the wiping head 711 and the pressure on the strip.

[0141] An acquisition module 72 is used to acquire grayscale data of each detection partition after wiping;

[0142] Reference Figure 9 and Figure 10 The acquisition module 72 includes an image acquisition device 722 and an image processing module. The image acquisition device 722 can be a camera. The image acquisition device 722 is installed on the mounting portion 81 and is located on the side of the wiping module 71 away from the wiping direction, so that after the wiping module 71 wipes the plate strip, the image of the position where the plate strip passes through the wiping direction is acquired.

[0143] By processing the image through the image processing module, the grayscale data of the plate strip can be obtained.

[0144] The processing module 73 is used to splice the multiple sets of grayscale data according to the arrangement order of the detection partitions and perform preset processing to determine the current grayscale gradient data of the strip;

[0145] The determination module 74 is used to obtain the preset quality standard of the plate strip and determine the quality grade of the plate strip according to the current grayscale gradient data and the preset quality standard.

[0146] In this embodiment, the processing module 73 and the determination module 74 are both integrated into a computer, thereby realizing the processing of grayscale data and the determination of quality levels.

[0147] In some embodiments, the wiping module 71 is further configured to perform the following steps:

[0148] A plurality of wiping modules 71 are used to apply pressure to one end of each detection zone respectively, and move from one end to the other end along the second direction of the plate strip to achieve wiping of each detection zone.

[0149] In some embodiments, reference Figure 9 and Figure 10 The detection device 7 further includes a pressure adjustment module 75 for implementing the following steps:

[0150] During the pressure application process, the pressure feedback values of the wiping modules 71 on the respective detection zones are obtained;

[0151] Determine the pressure extreme difference values between the multiple groups of wiping modules 71 according to the multiple pressure feedback values;

[0152] When it is detected that the pressure extreme difference value is greater than the preset pressure extreme difference value, the wiping module 71 corresponding to the minimum pressure feedback value is controlled to continue applying pressure;

[0153] Repeat the above steps until the pressure range is less than or equal to the preset pressure range.

[0154] In some embodiments, the pressure adjustment module 75 may include a pressure sensor, which is disposed above the wiping module 71 and connected to a computer, for detecting the pressure value of the wiping head 711 .

[0155] In some embodiments, the adjustment module 75 and the acquisition module 72 are further configured to implement the following steps:

[0156] During the wiping process, the grayscale values of each detection partition in the same first direction are synchronously obtained;

[0157] Determine grayscale extreme difference values between multiple groups of wiping modules according to multiple grayscale values;

[0158] When it is detected that the grayscale extreme difference value is greater than the preset grayscale extreme difference value, the wiping module corresponding to the minimum grayscale value is controlled to continue to apply pressure;

[0159] Repeat the above steps until the grayscale range value is less than or equal to the preset grayscale range value.

[0160] In some embodiments, the acquisition module 72 is further configured to implement the following steps:

[0161] Illuminating the wiped detection partition with a light source 721;

[0162] Acquire the reflected light images at each position of the detection zone under the illumination of the light source 721;

[0163] Grayscale data is determined based on the reflected light image.

[0164] Among them, reference Figure 9 and Figure 10 The acquisition module 72 includes a light source 721, which is arranged on a side close to the image acquisition device 722. When each detection partition acquires an image, it is illuminated by the light source 721 with the same brightness and illumination angle. The illumination angle θ1 between the light source 721 and the plate strip is the same as the angle θ2 at which the image acquisition device 722 acquires light, so as to ensure that the luminosity, brightness and other conditions of the plate image of each detection partition are the same.

[0165] In some embodiments, the determination module 74 is further configured to implement the following steps:

[0166] During the wiping process, the reflected light images of each detection partition in the same first direction are synchronously acquired;

[0167] determining grayscale data of each detection partition in the same first direction according to the reflected light image;

[0168] Multiple groups of grayscale data are spliced according to the arrangement order of multiple groups of detection partitions, and preset processing is performed to obtain current grayscale gradient data that marks the tin ash distribution of the entire plate strip.

[0169] In some embodiments, the determination module 74 is further configured to implement the following steps:

[0170] Obtain standard grayscale gradient data of the strip in the absence of tin ash;

[0171] Dividing the preset grayscale difference between the data and the standard grayscale gradient data into multiple intervals according to the preset gradient, and corresponding each interval to a different quality level to determine the preset quality standard;

[0172] The preset quality standard of the plate strip is obtained, the interval corresponding to the current gray gradient data in the preset quality standard is determined, and the quality grade corresponding to the interval is determined as the quality grade of the plate strip.

[0173] In some embodiments, reference Figure 9 The detection device 7 further includes a leveling module 76 for implementing the following steps:

[0174] Check whether the flatness of the strip reaches the preset flatness;

[0175] When it is detected that the flatness does not reach the preset flatness, the plate strip is flattened until the flatness reaches the preset flatness.

[0176] Reference Figure 9 The leveling module 76 includes a front pressure roller and a rear pressure roller, which are respectively arranged on both sides of the sample platform 8 along the first direction of the sample platform 8 to achieve leveling processing of the plate strip.

[0177] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0178] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0179] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0180] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0181] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0182] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0183] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0184] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0185] The above is a detailed introduction to a pedal control system and a car including the system provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for detecting the quality grade of a plate and strip, characterized in that: The method comprises: After dividing the plate strip into a plurality of inspection zones along a first direction, wiping each of the inspection zones to remove tin ash on the surface thereof; Wiping each of the detection partitions includes: Applying pressure to one end of each of the detection zones through multiple groups of wiping modules, and moving from one end to the other end along the second direction of the strip to wipe each of the detection zones; The multiple groups of wiping modules are arranged to slide side by side along the second direction; Obtaining grayscale data of each detection partition after wiping; splicing the plurality of groups of grayscale data according to the arrangement order of the detection partitions and performing preset processing to determine the current grayscale gradient data of the strip; Acquiring a preset quality standard of the strip, and determining a quality grade of the strip according to the current grayscale gradient data and the preset quality standard; The method further comprises: During the wiping process, the grayscale values of each detection partition in the same first direction are synchronously acquired; Determine grayscale extreme difference values between multiple groups of wiping modules according to the multiple grayscale values; When it is detected that the grayscale extreme difference value is greater than the preset grayscale extreme difference value, controlling the wiping module corresponding to the minimum grayscale value to continue applying pressure; Repeat the above steps until the grayscale extreme difference value is less than or equal to the preset grayscale extreme difference value.

2. The detection method according to claim 1, wherein The method further comprises: During the process of applying pressure, obtaining pressure feedback values of the wiping modules on the respective detection zones; Determining the extreme pressure differences between the plurality of groups of wiping modules according to the plurality of pressure feedback values; When it is detected that the pressure extreme difference value is greater than the preset pressure extreme difference value, controlling the wiping module corresponding to the minimum pressure feedback value to continue applying pressure; Repeat the above steps until the pressure extreme difference value is less than or equal to the preset pressure extreme difference value.

3. The detection method according to claim 1, wherein Obtaining grayscale data of each detection partition after wiping, including: irradiating the wiped detection partition with a light source; Acquire a reflected light image at each position of the detection zone under illumination of the light source; The grayscale data is determined according to the reflected light image.

4. The detection method according to claim 1, wherein The plurality of groups of grayscale data are spliced according to the arrangement order of the detection partitions and are subjected to preset processing to determine the current grayscale gradient data of the strip, including: During the wiping process, the reflected light images of the respective detection partitions in the same first direction are synchronously acquired; determining the grayscale data of each detection partition in the same first direction according to the reflected light image; The plurality of groups of grayscale data are spliced according to the arrangement order of the plurality of groups of detection partitions, and are subjected to preset processing to obtain the current grayscale gradient data marking the tin ash portion of the entire plate strip.

5. The detection method according to claim 4, characterized in that The preset processing includes determining the current grayscale gradient data according to the grayscale data according to a preset formula, and the preset formula is: degreeI=(I i -I i+k ) / k Where gradI is the current grayscale gradient data, k is the pixel distance between two adjacent wiping marks, Ii is the grayscale data of any detection partition, I i+k The grayscale data of another adjacent detection partition.

6. The detection method according to claim 1, characterized in that The method further comprises: Obtaining standard grayscale gradient data of the plate strip in a tin-free ash condition; Dividing the preset grayscale difference between the data and the standard grayscale gradient data into a plurality of intervals according to the preset gradient, and corresponding each of the intervals to a different quality level to determine the preset quality standard; Obtaining a preset quality standard of the strip, and determining a quality grade of the strip according to the current grayscale gradient data and the preset quality standard, including: The preset quality standard of the strip is obtained, the interval corresponding to the current grayscale gradient data in the preset quality standard is determined, and the quality grade corresponding to the interval is determined as the quality grade of the strip.

7. The detection method according to claim 1, characterized in that Before dividing the strip into a plurality of detection zones along the first direction according to a preset arrangement order, the method further includes: Detecting whether the flatness of the strip reaches a preset flatness; When it is detected that the flatness does not reach the preset flatness, the plate strip is flattened until the flatness reaches the preset flatness.

8. A strip quality grade detection device, comprising a sample platform, characterized in that: The detection device comprises: a wiping module, configured to divide the strip into a plurality of inspection zones along a first direction according to a preset arrangement order, and then wipe each of the inspection zones to remove tin ash on the surface thereof; Wiping each of the detection partitions includes: Applying pressure to one end of each of the detection zones through multiple groups of wiping modules, and moving from one end to the other end along the second direction of the strip to wipe each of the detection zones; The multiple groups of wiping modules are arranged to slide side by side along the second direction; An acquisition module, configured to acquire grayscale data of each detection partition after wiping; a processing module, configured to splice the plurality of grayscale data sets according to the arrangement order of the detection partitions and perform preset processing to determine the current grayscale gradient data of the strip; a determination module, configured to obtain a preset quality standard of the strip and determine a quality grade of the strip according to the current grayscale gradient data and the preset quality standard; The adjustment module is used to implement the following steps with the acquisition module: During the wiping process, the grayscale values of each detection partition in the same first direction are synchronously acquired; Determine grayscale extreme difference values between multiple groups of wiping modules according to the multiple grayscale values; When it is detected that the grayscale extreme difference value is greater than the preset grayscale extreme difference value, controlling the wiping module corresponding to the minimum grayscale value to continue applying pressure; Repeat the above steps until the grayscale extreme difference value is less than or equal to the preset grayscale extreme difference value.

Images