Plate detection method, device and storage medium

Abstract

Embodiments of the present invention provide a plate inspection method, apparatus, and storage medium. The plate inspection method comprises: passing a plate through two detection windows positioned relative to each other to obtain structural data of the plate, each detection window including a corresponding distance sensor group, each distance sensor group including at least one distance sensor; establishing a three-dimensional model of the plate based on the structural data; and determining the stamping quality of the plate based on the three-dimensional model. In embodiments of the present invention, by using the distance sensor groups positioned relative to each other to obtain distance data from the front and back sides of the plate, the plate's structural data can be accurately obtained, thereby accurately determining whether the plate has thickness defects caused by stamping.

Description

Technical Field

[0001] The present invention relates to the field of fuel cell component quality detection, and in particular to a plate detection method, device and storage medium. Background Art

[0002] After the plate is stamped, the plate stamping quality needs to be tested. Only when the stamped plate meets the preset standards can the plate be used for subsequent operations such as plate stacking and fuel cell assembly.

[0003] In the prior art, the inspection of plate stamping quality is mainly focused on the flatness of the plate. There is no effective way to detect stamping thickness defects caused by uneven stretching during the stamping process or foreign matter entering the stamping area. Summary of the Invention

[0004] The embodiments of the present application provide a plate detection method, device, and storage medium for detecting stamping defects occurring during the plate stamping process.

[0005] The present invention provides a plate detection method, characterized in that the method includes:

[0006] Passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate, each detection window including a corresponding distance sensor group, and the distance sensor group including at least one distance sensor;

[0007] Establishing a three-dimensional model of the electrode plate according to the structural data;

[0008] The stamping quality of the electrode plate is determined according to the three-dimensional model.

[0009] The present application also provides a plate detection device, which includes:

[0010] a data acquisition unit, configured to pass the electrode plate through two detection windows located at opposite positions to acquire structural data of the electrode plate, wherein each detection window includes a corresponding distance sensor group, and the distance sensor group includes at least one distance sensor;

[0011] A model building unit, configured to build a three-dimensional model of the electrode plate according to the structural data;

[0012] A quality determination unit is used to determine the stamping quality of the electrode plate according to the three-dimensional model.

[0013] In some embodiments, the plate detection device includes a conveying device,

[0014] The electrode plate is placed in a vertical position on a conveyor, and the conveyor is used to transport the electrode plate at a fixed rate;

[0015] One of the two detection windows faces the front side of the electrode plate, and the other detection window faces the back side of the electrode plate.

[0016] In some embodiments, the distance sensor group corresponding to the detection window facing the front of the electrode plate is recorded as the first distance sensor group, and the distance sensor group corresponding to the detection window facing the back of the electrode plate is recorded as the second distance sensor group. The data acquisition unit further includes:

[0017] a distance data acquisition subunit, configured to pass the electrode plate through two detection windows located at opposite positions, so as to acquire front distance data of the electrode plate through a first distance sensor group, and acquire back distance data of the electrode plate through a second distance sensor group;

[0018] The structural data acquisition subunit is used to acquire the structural data of the electrode plate according to the front distance data and the back distance data.

[0019] In some embodiments, the plate detection device further comprises:

[0020] A standard structure acquisition unit, configured to acquire the front side standard structure data and the back side standard structure data of the electrode plate;

[0021] A front structure area unit, configured to obtain a front structure area distribution of the electrode plate according to the front standard structure data;

[0022] A back surface structure area unit, configured to obtain a back surface structure area distribution of the electrode plate according to the back surface standard structure data;

[0023] a first frequency matrix acquisition unit, configured to set a first frequency matrix of the first distance sensor group according to the front structural area distribution, wherein the first frequency matrix is ​​configured to control each distance sensor of the first distance sensor group to acquire front distance data of the plate according to a corresponding detection frequency;

[0024] The second frequency matrix acquisition unit is used to set the second frequency matrix of the second distance sensor group according to the distribution of the back structure area, and the second frequency matrix is ​​used to control each distance sensor of the second distance sensor group to obtain the back distance data of the electrode plate according to the corresponding detection frequency.

[0025] In some embodiments, the first frequency matrix acquisition unit further includes:

[0026] a front element acquisition subunit, configured to determine, based on the front structural area distribution and the fixed rate, a maximum detection range of each distance sensor in the first distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one front structural area type, and each of the front structural area types has a corresponding detection sub-time period;

[0027] a first frequency matrix calculation subunit, configured to calculate a first frequency matrix in the first distance sensor group according to the front structure area distribution and the detection sub-time period;

[0028] The second frequency matrix acquisition unit further includes:

[0029] a back surface element acquisition subunit, configured to determine, based on the back surface structure area distribution and the fixed rate, a maximum detection range of each distance sensor in the second distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one back surface structure area type, and each back surface structure area type has a corresponding detection sub-time period;

[0030] The second frequency matrix calculation subunit calculates a second frequency matrix of the second distance sensor group according to the back surface structure area distribution and the detection sub-time period.

[0031] In some embodiments, the structure data acquisition subunit further includes:

[0032] a first interpolation subunit, configured to perform a first interpolation operation on the front distance data to obtain a front distance matrix;

[0033] A second interpolation subunit is used to perform a second interpolation operation on the back side distance data to obtain a back side distance matrix;

[0034] A calculation subunit is used to obtain the structural data of the electrode plate according to the front distance matrix and the back distance matrix.

[0035] In some embodiments, the quality determination unit further comprises:

[0036] A standard structure acquisition subunit, used to acquire standard structure data of the electrode plate;

[0037] A standard model building subunit, configured to build a standard three-dimensional model of the electrode plate according to the standard structural data;

[0038] a comparison subunit, configured to compare the three-dimensional model with a standard three-dimensional model to obtain a comparison result, wherein the comparison result includes determining whether the thickness of the electrode plate meets the standard;

[0039] The result determination subunit is used to determine the stamping quality of the electrode plate according to the comparison result.

[0040] In the plate detection method provided in the embodiment of the present application, by setting two distance sensor groups located in relative positions to obtain distance data of the front and back sides of the plate, the structural data of the plate can be accurately obtained, thereby accurately judging whether the plate has stamping thickness defects based on the structural data. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1a Schematic diagram of a plate detection method according to an embodiment of the present application;

[0043] Figure 1b 1 is a flow chart of a plate detection method provided in an embodiment of the present application;

[0044] Figure 2 This is a schematic structural diagram of the front side of the electrode plate in an embodiment of the present application;

[0045] Figure 3 This is a flowchart of obtaining a frequency matrix provided in an embodiment of the present application;

[0046] Figure 4a This is a schematic diagram of a specific embodiment provided in the embodiments of the present application;

[0047] Figure 4b This is a flow chart of a specific embodiment provided in the embodiments of the present application;

[0048] Figure 5 is a schematic diagram of a plate detection device according to an embodiment of the present application;

[0049] Figure 6 It is a structural diagram of the plate detection system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] It should be noted that the terms used in the examples section of the embodiments of this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. Furthermore, in the description of the embodiments of this application, unless otherwise specified, "a plurality" refers to two or more than two, and "at least one" refers to one, two, or more than two. The term "first" is used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. The term "superior" is used for descriptive purposes only and should not be construed as implying that the object being described is relatively more important. References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include the specific features, structures, or characteristics described in conjunction with that embodiment. Therefore, phrases such as "in one embodiment" and "some embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically stated. The terms "including," "comprising," "having," and their variations all mean "including but not limited to," unless otherwise specifically stated.

[0051] 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 only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0052] First, let’s introduce the basic concepts of the terms related to this invention:

[0053] Hydrogen fuel cells: Hydrogen fuel cells are environmentally friendly and power-controlled batteries that utilize a chemical reaction between hydrogen and oxygen via a catalyst to generate electricity and water. Their basic principle is the reverse reaction of water electrolysis, with hydrogen and oxygen supplied to the anode and cathode, respectively. Hydrogen diffuses outward from the anode, reacts with the catalyst, and releases negative electrons that travel through an external load to the cathode. As a new power source, hydrogen fuel cells share the common characteristics of conventional fuel cells, such as high efficiency, zero pollution, low noise, and continuous operation. Furthermore, they offer advantages such as high power density, low operating temperature, fast startup, and long service life. Therefore, they hold broad application prospects in fixed power plants, electric vehicles, military, and mobile power sources.

[0054] Polar plate: Polar plate is one of the core components of hydrogen fuel cells, and its performance directly affects the efficiency, life and cost of the stack. Bipolar plates account for 20% to 35% of the cost of hydrogen fuel cells. They not only connect the battery pack to the conductor, but also separate the reaction gas and cooling water. Polar plates are provided with areas with different functions. For example, the flow channels in the cooling zone allow the cooling water to take away the heat generated during battery operation, and the flow channels in the dispersion zone facilitate the diffusion of gases generated by battery reactions. Polar plates can be made of a variety of materials. The polar plates in the present invention are obtained by stamping the plates with a stamping machine. Therefore, the polar plate material in the present invention needs to meet the conditions for stamping processing.

[0055] Stamping: Stamping technology is a production technology that uses the power of conventional or special stamping equipment to directly subject the sheet metal to deformation force in the mold and deform it, thereby obtaining product parts with a certain shape, size and performance.

[0056] The embodiments of the present application provide a plate detection method, device, and storage medium.

[0057] The plate detection method can be integrated into an electronic device, which can be a terminal device or a main control panel.

[0058] In some embodiments, the terminal can be an independent device, such as a mobile phone, tablet computer, smart Bluetooth device, laptop computer, or personal computer (PC), and the device can serve as both a memory and a processor. The device serves as a memory for storing instructions, and the device also serves as a processor to load instructions from the memory to execute the plate detection method of the present invention. The device is connected to a plate detection device with a detection function, and transmits the instructions to the plate detection device so that the device can interpret the instructions and execute the corresponding detection action.

[0059] In some embodiments, the terminal can be a main control panel, which is used to realize human-computer interaction, and the main control panel is connected to a plate detection device having a plate detection function. The main control panel may include a microprocessor, a control, and a display screen, etc. The control is used to generate relevant operation instructions in response to user operations so that the plate detection device performs corresponding actions according to the operation instructions, for example, starting / shutting down the plate detection device; the display screen is used to display various parameters generated when the plate detection device is working; the microprocessor can store the plate detection method of the present invention and generate corresponding plate detection instructions so that the plate detection device can parse the instructions and perform corresponding detection actions. In addition, it can receive and analyze data obtained when the plate detection device is working, and transmit the results to the display screen.

[0060] In some embodiments, the plate detection method can also be integrated into multiple electronic devices. For example, the plate detection method can be integrated into multiple terminals, and the plate detection method of the present application can be jointly implemented by multiple terminals, wherein each terminal can implement different functions of the plate detection method.

[0061] It should be noted that the serial numbers of the following embodiments are not intended to limit the preferred order of the embodiments.

[0062] Example 1

[0063] refer to Figure 1a , shows a schematic diagram of the application scenario of the plate detection method in this embodiment. Figure 1a As shown, this embodiment may include a plate detection device 100, and the plate detection device 100 includes a conveying device 110, a front detection window 121, a back detection window 122, and a processor 130;

[0064] Specifically, when implementing the plate detection method of the present invention, one or more plates are pre-set on the conveying device 110; the processor 130 controls the conveying device 110 to pass the plates one by one through two detection windows 121 and 122 located at relative positions to obtain the structural data of the plates, each of the detection windows includes a corresponding distance sensor group, and the distance sensor group includes at least one distance sensor; the processor 130 establishes a three-dimensional model of the plate based on the structural data returned by the detection windows 121 and 122; the processor 130 determines the stamping quality of the plate based on the three-dimensional model.

[0065] In this embodiment, the description will be made from the perspective of a processor, which can be integrated into a plate detection device. First, the conveying device can be controlled to pass the plates one by one through two detection windows located at relative positions to obtain the structural data of the plates; further, a three-dimensional model of the plates is established based on the structural data returned by the detection windows; finally, the stamping quality of the plates is determined based on the three-dimensional model.

[0066] like Figure 1b As shown, the process of the plate detection method in this embodiment may include steps S110 to S130:

[0067] S110 , passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate, each of the detection windows including a corresponding distance sensor group, and the distance sensor group including at least one distance sensor.

[0068] The distance sensor may be an optical distance sensor, an ultrasonic distance sensor, or the like. Each distance sensor is provided with a certain sensing area, and the sensing area may be a preset regular shape. Preferably, the sensing area may be a rectangle. The distance sensor performs detection at a specific detection frequency, and in one detection, it is capable of obtaining distance data from at least one sampling point in the sensing area to the detection window, with the sampling points being evenly distributed in the sensing area. The types of distance sensors provided in the same distance sensor group should be the same, and the sizes of the sensing areas of the various distance sensors may be different. The sensing areas of the various distance sensors may overlap, but the combination of all sensing areas should be able to cover the entire surface area of ​​the electrode entering the detection window, to ensure that when the electrode passes through two detection windows located in opposite positions, the complete distance data of the two relative surfaces of the electrode can be obtained.

[0069] Specifically, the distance sensor can obtain distance data of the portion of the plate surface that enters the detection window and that overlaps with its sensing area. Depending on the performance of the distance sensor, in one distance measurement, the distance sensor can obtain distance data of a certain position point in the sensing area or obtain distance data of multiple sampling points in the sensing area.

[0070] In some embodiments, the electrode plate is arranged in a vertical state on a conveying device, and the conveying device is used to transport the electrode plate at a fixed rate; one of the two detection windows is opposite to the front side of the electrode plate, and the other detection window is opposite to the back side of the electrode plate.

[0071] Specifically, since the electrode plate as a whole is a rectangular parallelepiped with a length and width much greater than the thickness (height), the distance data of the front / back sides corresponding to the length and width are mainly detected during detection, and these distance data are used to judge the stamping quality of the electrode plate. At this time, the surface of the electrode plate with the length and height as the bottom is set as the bottom surface on the conveyor, and the conveyor passes the electrode plate through two detection windows at a fixed rate, one detection window is facing the front side of the electrode plate, and the other detection window is facing the back side of the electrode plate, so as to obtain the distance data of the front / back sides. Preferably, the electrode plate can be set in the middle of the two detection windows to ensure that the distances from the reference planes of the front and back sides of the electrode plate to their respective corresponding detection windows are equal, wherein the reference plane is used to represent the horizontal plane state of the front / back side before the electrode plate is stamped.

[0072] In some embodiments, the distance sensor group corresponding to the detection window facing the front of the plate is recorded as the first distance sensor group, and the distance sensor group corresponding to the detection window facing the back of the plate is recorded as the second distance sensor group. The process of passing the plate through the two detection windows at opposite positions to obtain the structural data of the plate can be specifically expanded as follows:

[0073] S111, passing the electrode plate through two detection windows located at opposite positions, so as to obtain front distance data of the electrode plate through a first distance sensor group, and obtain back distance data of the electrode plate through a second distance sensor group;

[0074] S112. Acquire structural data of the electrode plate according to the front distance data and the back distance data.

[0075] Reference Figure 2 A single polar plate (anode plate / cathode plate) has multiple structural zones, which are mainly divided by the role played in the operation of the fuel cell after the different structures on the surface of the polar plates are coupled after the bipolar plates (a group of anode plates and cathode plates) are stacked. For example, it can include a condensation zone for cooling the gas, a dispersion zone for dispersing the gas, a manifold zone for forming a manifold, etc. The structures of different types of structural zones are usually different, and the structures of the same type of structural zones may be different. The structures on the front and back of the single polar plate can be different. Therefore, the front distance data of the plate can be obtained by the first distance sensor group, and the back distance data of the plate can be obtained by the second distance sensor group, and then the structural data of the plate can be obtained based on the front distance data and the back distance data.

[0076] In some embodiments, before the conveying device passes the electrode plate through the two detection windows located at opposite positions, the following acquisition process of the first frequency matrix and the second frequency matrix is ​​also included, such as Figure 3 As shown, the following steps S310 to S350 may be specifically included:

[0077] S310, obtaining the front standard structure data and the back standard structure data of the electrode plate;

[0078] The standard structure data can be pre-entered into the plate testing equipment by a technician via wired or wireless transmission. The front / back standard structure data is primarily used to provide distance data from each standard sampling point on the plate to the distance sensor. The standard sampling points are preset by the technician based on actual testing requirements. They can be evenly distributed across the plate or individually set based on the distribution of structural areas. For example, more complex structures or areas with higher precision requirements can have more densely distributed standard sampling points.

[0079] The standard structure data can be stored using a matrix structure. Specifically, the front and back sides of the electrode plate are first divided into specific intervals, where the specific interval is the minimum sampling interval, and other sampling intervals should be multiples of the specific interval. For example, the front of the plate is 5n long, 2n wide, and has a specific interval of n. Ten squares with a side length of n can be divided on the front, and (5+1)×(2+1) non-repeating vertices (including the edge of the plate) can be obtained. Standard sampling points can then be set on the obtained vertices to generate a 6×3 matrix. The position of the standard sampling point on the plate can be determined by the rows and columns of the matrix, and each element value represents the distance data corresponding to a standard sampling point. In actual operation, the length and width of the plate should be much larger than the specific interval to ensure that there is sufficient sampling data to judge the stamping quality of the plate. If a vertex is not set with a standard sampling point due to different sampling intervals, a completion operation should be performed: the element value corresponding to the vertex can be set to the distance from the detection window to the reference plane (equal to the distance from the distance sensor to the reference plane), or the element value corresponding to its adjacent vertices can be taken, or the average value of the element values ​​of multiple adjacent vertices can be taken, and so on.

[0080] In some embodiments, the front standard structure data can be a three-order tensor structure, with specific points (vertices, center points, etc.) of the reference plane corresponding to the front side of the electrode plate being used as reference points to construct a three-dimensional coordinate system. Each element value of the three-order tensor reflects the position of the standard sampling point in the three-dimensional coordinate system. The back standard structure data can be constructed accordingly.

[0081] S320, obtaining the front structural area distribution of the electrode plate according to the front standard structural data;

[0082] S330, obtaining the back side structure area distribution of the electrode plate according to the back side standard structure data;

[0083] Based on the structural region definition described above, the structural region of each standard sampling point on the plate surface under standard conditions can be obtained using the standard structural data. For example, the position of the standard sampling point on the plate can be determined by the row and column information of the elements in the standard structural data matrix, thereby determining the structural region of each standard sampling point, i.e., the structural region distribution of the plate. Furthermore, since the structural region on the front and back of the plate may be different, the corresponding front structural region distribution may also differ from that on the back.

[0084] S340, setting a first frequency matrix of the first distance sensor group according to the distribution of the front structural area, wherein the first frequency matrix is ​​used to control each distance sensor of the first distance sensor group to obtain the front distance data of the plate according to the corresponding detection frequency;

[0085] S350: Setting a second frequency matrix of the second distance sensor group according to the distribution of the back structure area, wherein the second frequency matrix is ​​used to control each distance sensor of the second distance sensor group to obtain back distance data of the electrode plate according to a corresponding detection frequency.

[0086] The rows of the frequency matrix can represent the number of distance sensors in the distance sensor group, and the columns of the frequency matrix can represent the detection sub-time period during which a plate passes through two detection windows. The element corresponding to a particular row and column represents the detection frequency of the distance sensor corresponding to that row within the specific detection sub-time period. Since the plate is a rectangular parallelepiped, the length and width of the front and back sides of the plate can be respectively recorded as the length and width of the plate, and the thickness of the plate can be recorded as the height of the plate. When the plate is placed on a conveyor with its length and height as the bottom surface, and the conveyor passes a single plate through two detection windows at a fixed rate, the time from the front and back sides of the plate entering the detection windows to the front and back sides completely passing through the detection windows is recorded as the detection time period. The detection time period can be further divided into multiple detection sub-time periods, with no intersection between the individual detection sub-time periods. The union of all detection sub-time periods is the detection time period. The detection frequency should be set to ensure that all sampling points cover the entire plate as much as possible, avoiding large areas without sampling.

[0087] Under the above settings, the front / back distance data of the plate can be generated based on the distance data obtained from each sampling point in the sensing area. The structure of the data can be the same as the standard structure data. If repeated sampling points appear during the detection process, the later sampled data can overwrite the earlier sampled data. If a large area of ​​unsampled parts still appears, the data should be supplemented according to the method described above.

[0088] In the above embodiment, based on the setting of the above frequency matrix, by making the distance sensor use different detection frequencies for detection in different detection time periods, different sampling point densities in different areas are achieved, so that technicians can use varying detection accuracy to detect the stamping quality of the plate as needed.

[0089] In some embodiments, the first frequency matrix and the second frequency matrix can be calculated based on the structural area distribution on both sides of the plate, the speed of the conveyor, and the size of the sensing area of ​​the sensor. Specifically, the following steps can be included:

[0090] S341. Determine, based on the front structural area distribution and the fixed rate, a maximum detection range of each distance sensor in the first distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one front structural area type, and each front structural area type has a corresponding detection sub-time period.

[0091] S342, calculating a first frequency matrix in the first distance sensor group according to the front structure area distribution and the detection sub-time period;

[0092] S351, determining, based on the back surface structure area distribution and the fixed rate, a maximum detection range of each distance sensor in the second distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one back surface structure area type, and each back surface structure area type has a corresponding detection sub-time period;

[0093] S352: Calculate a second frequency matrix of the second distance sensor group according to the back surface structure area distribution and the detection sub-time period.

[0094] The maximum detection range of the distance sensor is the maximum range of the plate that the sensing area of ​​the distance sensor can cover during the entire plate detection process. Therefore, based on the structure of the plate, it can be seen that the maximum detection range is a rectangle. And based on the relationship between the sensing areas of each distance sensor mentioned above, the maximum detection ranges corresponding to each distance sensor can overlap, but the union of all maximum detection ranges should be the entire front / back side of the plate. Obviously, the maximum detection range includes at least one structural area type, and the detection time of each structural area type can be calculated by the speed of the conveyor device and recorded as the detection sub-time period. During the calculation process, if multiple types of structural areas appear simultaneously in the sensing area, the structural area with the most standard sampling points in the sensing area can be determined as the structural area at that time.

[0095] Since the structural area distribution reflects the structural area where each standard sampling point is located, based on the sampling interval of the standard sampling point within the detection sub-time period, the detection frequency of the distance sensor can be further set according to the size of the sensing area, thereby ensuring that the electrode range covered by the sensing area is equal to the maximum detection range.

[0096] For example, assume that the sensing area of ​​a distance sensor is a square of size N×N, and its maximum detection range includes two types of structural areas, one of which is of size M*N, with a sampling interval of n for each standard sampling point. Furthermore, the fixed speed of the transmission device is V. The detection frequency f of the distance sensor during the detection period of this structural area can be determined, that is, the range of the frequency matrix element values ​​is V / n ≥ f ≥ V / N.

[0097] In the above embodiment, based on the setting of the above frequency matrix, by making the distance sensor use different detection frequencies for detection in different detection time periods, different sampling point densities in different areas are achieved. On the basis of ensuring high-precision detection of the entire plate, the needs of technicians for variable detection accuracy are met.

[0098] In some embodiments, the operation of obtaining the structural data of the electrode plate according to the front distance data and the back distance data may include the following steps A1 to A3:

[0099] A1. performing a first interpolation operation on the front distance data to obtain a front distance matrix;

[0100] A2. performing a second interpolation operation on the back side distance data to obtain a back side distance matrix;

[0101] A3. Acquire structural data of the electrode plate according to the front distance matrix and the back distance matrix.

[0102] In which, the first interpolation operation can use the same interpolation method as the second interpolation operation, and the interpolation method can be neighbor interpolation, median interpolation, Lagrange interpolation, etc., or a combination of multiple methods to obtain the front / back distance matrix after interpolation. In some embodiments, the interpolation operation is related to the frequency matrix. Specifically, if the frequency within a detection sub-time period is very high, it means that the distance data here is denser, and the amount of interpolation can be reduced or no interpolation is performed; on the contrary, if the frequency within a detection sub-time period is very low, it means that the detection accuracy required for the structural area is low, and appropriate interpolation can be performed to meet the needs of modeling. The method for obtaining structural data can be: for the sampling points at the same position on the front and back, first determine the offset value of the point relative to the reference plane based on the two distance values, and further, subtract the two distance values ​​from the total distance between the two detection windows to obtain the thickness of the sampling point.

[0103] In the above embodiment, the distance data is interpolated so that the distance data meets the requirements of three-dimensional modeling, which helps to determine whether there is a problem with the stamping quality of the plate based on the three-dimensional model.

[0104] S120: Establish a three-dimensional model of the electrode plate according to the structural data.

[0105] The three-dimensional model can be obtained based on the elements of the structural data through software with a three-dimensional modeling function, such as CAD (Computer Aided Design), MATLAB, etc.

[0106] S130: Determine the stamping quality of the electrode plate according to the three-dimensional model.

[0107] If there is a problem with the stamping quality, it may be one of the following problems: unevenness, excessive thickness, or excessive thinness. In some embodiments, the stamping quality can be determined based on the standard structural data of the plate, and specifically can include the following steps B1 to B4:

[0108] B1. Obtaining standard structural data of the electrode plate;

[0109] B2. establishing a standard three-dimensional model of the electrode plate according to the standard structural data;

[0110] B3. Comparing the three-dimensional model with a standard three-dimensional model to obtain a comparison result, wherein the comparison result includes determining whether the thickness of the electrode plate meets the standard;

[0111] B4. Determine the stamping quality of the electrode plate according to the comparison result.

[0112] Among them, the standard structural data, as described above, may include the thickness of the plate at the standard sampling point. By comparing the standard structural data with the structural data of the tested plate, elements in the structural data whose values ​​exceed a certain threshold range from those in the standard structural data can be found, and then the position corresponding to the element in the three-dimensional model can be marked with a specific color. Different quality problems can correspond to different colors, so that technical personnel can discover and solve problems in a timely manner.

[0113] In an embodiment of the present application, by using a relatively arranged distance sensor group, the plate distance data is obtained based on the frequency matrix, and then the plate structure data is obtained. It is possible to accurately and efficiently obtain and establish a three-dimensional model of the plate, thereby accurately determining whether there is a stamping quality problem with the plate and guiding technical personnel to deal with it in a timely manner.

[0114] Example 2

[0115] refer to Figure 4a , shows a schematic diagram of an application scenario of a specific embodiment of the plate detection method in this embodiment. Figure 4a As shown, this embodiment may include a plate detection system 400, which includes a plate input device 410, a conveying device 420, a front detection window 431, a back detection window 432, a processor 440, and a model display 450;

[0116] In this embodiment, the description will be made from the perspective of a plate detection system, which includes a plate input device, a conveying device, a detection window, and a model display.

[0117] like Figure 4b As shown, the implementation subject of the present plate detection method is a microprocessor, and the process of the plate detection method is as follows: Steps S401 to S409:

[0118] S401, the plate feeding device places the plate on the conveying device;

[0119] S402, the conveying device passes the electrode plate through the front detection window and the back detection window at a fixed rate;

[0120] S403, the front detection window obtains front distance data, and the back detection window obtains back distance data;

[0121] S404: The front detection window transmits the front distance data to the processor, and the back detection window transmits the back distance data to the processor.

[0122] S405: The processor obtains structural data of the electrode plate according to the obtained front distance data and the obtained back distance data;

[0123] S406: The processor generates three-dimensional data according to the structural data of the electrode plate;

[0124] S407: The processor transmits the three-dimensional data to the model display device;

[0125] S408, a model displayer generates a three-dimensional model according to the three-dimensional data;

[0126] S409: The model displayer determines the location of the stamping quality problem and the corresponding problem type on the three-dimensional model according to the standard three-dimensional model.

[0127] The steps included in the plate detection method of this embodiment are basically consistent with the specific execution methods of the steps in Example 1, and will not be repeated here.

[0128] From the above, it can be seen that in the embodiment of the present application, by using a relatively arranged distance sensor group, the plate distance data is obtained based on the frequency matrix, and then the plate structure data is obtained, which can accurately and efficiently obtain and establish a three-dimensional model of the plate, thereby accurately judging whether there is a stamping quality problem with the plate and guiding technical personnel to deal with it in a timely manner.

[0129] In order to better implement the above method, an embodiment of the present invention provides a plate detection device, which can be specifically integrated into an electronic device, which can be a terminal, a server or other device. The electronic device is connected to the plate detection device, and controls the plate detection device to perform a preset detection action through instructions. In some embodiments, the terminal can be an independent device, such as a mobile phone, a tablet computer, a smart Bluetooth device, a laptop computer, or a personal computer (PC), and the device can serve as both a memory and a processor. The device is used as a memory to store instructions, and the device also serves as a processor to load instructions from the memory to control the plate detection device to perform the plate detection method of the present invention; the device is connected to a plate detection device with a plate detection function, and transmits the instructions to the plate detection device so that it can parse the instructions and perform the corresponding detection action.

[0130] In some embodiments, the terminal can be a main control panel, which is used to implement human-computer interaction and is connected to a plate detection device having a plate detection function. The main control panel may include a microprocessor, multiple controls, a display screen, etc. The controls are used to generate relevant operating instructions in response to user operations so that the plate detection device performs corresponding actions according to the operating instructions; the display screen is used to display various parameters generated when the plate detection device is operating; the microprocessor can store the plate detection method of the present invention and generate corresponding plate detection instructions so that the plate detection device can parse the instructions and perform corresponding detection actions.

[0131] For example, in this embodiment, the method of the embodiment of the present invention will be described from the perspective of the plate detection device, and the plate detection device will be specifically integrated into the plate detection system as an example to explain in detail.

[0132] For example, Figure 5 As shown, the electrode plate detection device 500 may include an instruction data acquisition unit 510 , a model building unit 520 , and a quality determination unit 530 .

[0133] A data acquisition unit 510 is configured to pass the electrode plate through two detection windows located at opposite positions to acquire structural data of the electrode plate, wherein each detection window includes a corresponding distance sensor group, and each distance sensor group includes at least one distance sensor;

[0134] A model building unit 520, configured to build a three-dimensional model of the electrode plate according to the structural data;

[0135] The quality determination unit 530 is configured to determine the stamping quality of the electrode plate according to the three-dimensional model.

[0136] In some embodiments, the plate detection device includes a conveying device,

[0137] The electrode plate is placed in a vertical position on a conveyor, and the conveyor is used to transport the electrode plate at a fixed rate;

[0138] One of the two detection windows faces the front side of the electrode plate, and the other detection window faces the back side of the electrode plate.

[0139] In some embodiments, the distance sensor group corresponding to the detection window facing the front of the electrode plate is recorded as the first distance sensor group, and the distance sensor group corresponding to the detection window facing the back of the electrode plate is recorded as the second distance sensor group. The data acquisition unit further includes:

[0140] a distance data acquisition subunit, configured to pass the electrode plate through two detection windows located at opposite positions, so as to acquire front distance data of the electrode plate through a first distance sensor group, and acquire back distance data of the electrode plate through a second distance sensor group;

[0141] The structural data acquisition subunit is used to acquire the structural data of the electrode plate according to the front distance data and the back distance data.

[0142] In some embodiments, the plate detection device further comprises:

[0143] A standard structure acquisition unit, configured to acquire the front side standard structure data and the back side standard structure data of the electrode plate;

[0144] A front structure area unit, configured to obtain a front structure area distribution of the electrode plate according to the front standard structure data;

[0145] A back surface structure area unit, configured to obtain a back surface structure area distribution of the electrode plate according to the back surface standard structure data;

[0146] a first frequency matrix acquisition unit, configured to set a first frequency matrix of the first distance sensor group according to the front structural area distribution, wherein the first frequency matrix is ​​configured to control each distance sensor of the first distance sensor group to acquire front distance data of the plate according to a corresponding detection frequency;

[0147] The second frequency matrix acquisition unit is used to set the second frequency matrix of the second distance sensor group according to the distribution of the back structure area, and the second frequency matrix is ​​used to control each distance sensor of the second distance sensor group to obtain the back distance data of the electrode plate according to the corresponding detection frequency.

[0148] In some embodiments, the first frequency matrix acquisition unit further includes:

[0149] a front element acquisition subunit, configured to determine, based on the front structural area distribution and the fixed rate, a maximum detection range of each distance sensor in the first distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one front structural area type, and each of the front structural area types has a corresponding detection sub-time period;

[0150] a first frequency matrix calculation subunit, configured to calculate a first frequency matrix in the first distance sensor group according to the front structure area distribution and the detection sub-time period;

[0151] The second frequency matrix acquisition unit further includes:

[0152] a back surface element acquisition subunit, configured to determine, based on the back surface structure area distribution and the fixed rate, a maximum detection range of each distance sensor in the second distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one back surface structure area type, and each back surface structure area type has a corresponding detection sub-time period;

[0153] The second frequency matrix calculation subunit calculates a second frequency matrix of the second distance sensor group according to the back surface structure area distribution and the detection sub-time period.

[0154] In some embodiments, the structure data acquisition subunit further includes:

[0155] a first interpolation subunit, configured to perform a first interpolation operation on the front distance data to obtain a front distance matrix;

[0156] A second interpolation subunit is used to perform a second interpolation operation on the back side distance data to obtain a back side distance matrix;

[0157] A calculation subunit is used to obtain the structural data of the electrode plate according to the front distance matrix and the back distance matrix.

[0158] In some embodiments, the quality determination unit further comprises:

[0159] A standard structure acquisition subunit, used to acquire standard structure data of the electrode plate;

[0160] A standard model building subunit, configured to build a standard three-dimensional model of the electrode plate according to the standard structural data;

[0161] a comparison subunit, configured to compare the three-dimensional model with a standard three-dimensional model to obtain a comparison result, wherein the comparison result includes determining whether the thickness of the electrode plate meets the standard;

[0162] The result determination subunit is used to determine the stamping quality of the electrode plate according to the comparison result.

[0163] In specific implementation, the above units can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units can be found in the previous method embodiments and will not be repeated here.

[0164] From the above, it can be seen that in the plate detection device provided in the embodiment of the present application, by using a relatively arranged distance sensor group, the plate distance data is obtained based on the frequency matrix, and then the plate structure data is obtained. It is possible to accurately and efficiently obtain and establish a three-dimensional model of the plate, thereby accurately judging whether there is a stamping quality problem with the plate and guiding technical personnel to deal with it in a timely manner.

[0165] An embodiment of the present invention further provides a plate detection system, comprising a processor and a memory, wherein the memory stores a plurality of instructions; the processor loads instructions from the memory to execute the plate detection method of the present invention.

[0166] In this embodiment, the plate detection method of this embodiment will be described in detail as a plate detection system as an example. Figure 6 , which shows a schematic structural diagram of a plate detection system according to an embodiment of the present invention, specifically:

[0167] The plate detection system may include one or more processing core processors 601, one or more computer readable storage media memories 602, a power supply 603, an input module 604 and other components. Those skilled in the art will understand that Figure 6 The plate detection system structure shown in the figure does not constitute a limitation on the plate detection system, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0168] Processor 601 is the control center of the plate detection system. It connects the various components of the entire plate detection system using various interfaces and lines. By running or executing software programs and / or modules stored in memory 602 and accessing data stored in memory 602, it performs various functions of the plate detection system and processes data, thereby monitoring the entire plate detection system. In some embodiments, processor 601 may include one or more processing cores. In some embodiments, processor 601 may integrate an application processor and a modem processor, wherein the application processor primarily processes the operating system, user interfaces, and application programs, and the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 601.

[0169] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory 602. The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the plate detection system, etc. In addition, the memory 602 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory 602 may also include a memory controller to provide the processor 601 with access to the memory 602.

[0170] The plate detection system also includes a power supply 603 that supplies power to various components. In some embodiments, the power supply 603 can be logically connected to the processor 601 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The power supply 603 can also include one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and other arbitrary components.

[0171] The plate detection system may further include an input module 604 , which may be configured to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0172] Although not shown, the plate detection system may further include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 601 in the plate detection system will load the executable files corresponding to one or more application processes into the memory 602 according to the following instructions, and the processor 601 will run the application stored in the memory 602 to implement various functions as follows:

[0173] Passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate, each detection window including a corresponding distance sensor group, and the distance sensor group including at least one distance sensor;

[0174] Establishing a three-dimensional model of the electrode plate according to the structural data;

[0175] The stamping quality of the electrode plate is determined according to the three-dimensional model.

[0176] The specific implementation of the above operations can be found in the previous embodiments and will not be repeated here.

[0177] From the above, it can be seen that in the plate detection system provided in the embodiment of the present application, by using a relatively arranged distance sensor group, the plate distance data is obtained based on the frequency matrix, and then the plate structure data is obtained. It is possible to accurately and efficiently obtain and establish a three-dimensional model of the plate, thereby accurately judging whether there is a stamping quality problem with the plate and guiding technical personnel to deal with it in a timely manner.

[0178] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be accomplished by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0179] To this end, an embodiment of the present invention provides a computer-readable storage medium storing a plurality of instructions that can be loaded by a processor to execute the steps of any of the plate detection methods provided in the embodiments of the present invention. For example, the instructions can execute the following steps:

[0180] Passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate, each detection window including a corresponding distance sensor group, and the distance sensor group including at least one distance sensor;

[0181] Establishing a three-dimensional model of the electrode plate according to the structural data;

[0182] The stamping quality of the electrode plate is determined according to the three-dimensional model.

[0183] Since the instructions stored in the storage medium can execute the steps in any of the plate detection methods provided in the embodiments of the present invention, the beneficial effects that can be achieved by any of the plate detection methods provided in the embodiments of the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0184] The above is a detailed introduction to a plate detection method and device provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and embodiments of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific embodiments and application scope. In summary, the content of this specification should not be understood as a limitation on this application.

Claims

1. A plate detection method, characterized in that: The method comprises: Passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate, each detection window including a corresponding distance sensor group, and the distance sensor group including at least one distance sensor; Establishing a three-dimensional model of the electrode plate according to the structural data; determining the stamping quality of the electrode plate according to the three-dimensional model; The electrode plates are placed in a vertical position on a conveyor, and the conveyor is used to transport the electrode plates at a fixed rate; One of the two detection windows faces the front side of the electrode plate, and the other detection window faces the back side of the electrode plate; The distance sensor group corresponding to the detection window on the front side of the plate is recorded as the first distance sensor group, and the distance sensor group corresponding to the detection window on the back side of the plate is recorded as the second distance sensor group. Passing the electrode plate through two detection windows located at opposite positions to obtain structural data of the electrode plate includes: Passing the electrode plate through two detection windows located at opposite positions, obtaining front distance data of the electrode plate through the first distance sensor group, and obtaining back distance data of the electrode plate through the second distance sensor group; Acquire structural data of the electrode plate according to the front distance data and the back distance data; Wherein, before the electrode plate passes through two detection windows located at opposite positions, the method includes: Obtaining front standard structure data and back standard structure data of the electrode plate; Obtaining the front structural area distribution of the electrode plate according to the front standard structural data; Acquire the back side structure area distribution of the electrode plate according to the back side standard structure data; Distributing the first frequency matrix of the first distance sensor group according to the front structural area, wherein the first frequency matrix is ​​used to control each distance sensor of the first distance sensor group to obtain the front distance data of the plate according to the corresponding detection frequency; A second frequency matrix of the second distance sensor group is set according to the distribution of the back structure area, and the second frequency matrix is ​​used to control each distance sensor of the second distance sensor group to obtain the back distance data of the plate according to the corresponding detection frequency.

2. The plate detection method according to claim 1, wherein: The first frequency matrix of the first distance sensor group is arranged according to the distribution of the front structural area, comprising: determining, based on the front structural area distribution and the fixed rate, a maximum detection range of each distance sensor in the first distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one front structural area type, and each front structural area type has a corresponding detection sub-time period; Calculating a first frequency matrix in the first distance sensor group according to the front structure area distribution and the detection sub-time period; The second frequency matrix of the second distance sensor group is arranged according to the distribution of the back surface structure area, comprising: determining, based on the back surface structure area distribution and the fixed rate, a maximum detection range of each distance sensor in the second distance sensor group within a detection time period when the electrode plate passes through the detection window, wherein the maximum detection range includes at least one back surface structure area type, and each back surface structure area type has a corresponding detection sub-time period; A second frequency matrix of the second distance sensor group is calculated according to the back surface structure area distribution and the detection sub-time period.

3. The plate detection method according to claim 2, wherein: The obtaining of the structural data of the electrode plate according to the front distance data and the back distance data includes: performing a first interpolation operation on the front distance data to obtain a front distance matrix; performing a second interpolation operation on the back side distance data to obtain a back side distance matrix; Structural data of the electrode plate is acquired according to the front distance matrix and the back distance matrix.

4. The plate detection method according to any one of claims 1 to 3, characterized in that: Determining the stamping quality of the electrode plate according to the three-dimensional model includes: Obtaining standard structural data of the electrode plate; Establishing a standard three-dimensional model of the electrode plate according to the standard structural data; Comparing the three-dimensional model with a standard three-dimensional model to obtain a comparison result, wherein the comparison result includes determining whether the thickness of the electrode plate meets the standard; the comparison result includes determining whether the thickness of the electrode plate meets the standard; The stamping quality of the electrode plate is determined according to the comparison result.

5. A plate detection device, characterized in that: Based on the plate detection method according to any one of claims 1 to 4, the device comprises: a data acquisition unit, configured to pass the electrode plate through two detection windows located at opposite positions to acquire structural data of the electrode plate, wherein each detection window includes a corresponding distance sensor group, and the distance sensor group includes at least one distance sensor; A model building unit, configured to build a three-dimensional model of the electrode plate according to the structural data; A quality determination unit is used to determine the stamping quality of the electrode plate according to the three-dimensional model.

6. A storage medium, characterized in that The storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor to execute the plate detection method according to any one of claims 1 to 4.

7. A plate detection system, characterized in that: include: at least one processor; At least one memory is used to store at least one program; when the at least one program is executed by the at least one processor, the at least one processor implements the plate detection method according to any one of claims 1 to 4.

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