Strip shape evaluation method and device based on Gaussian function, equipment and storage medium

Abstract

The embodiment of the invention provides a plate shape evaluation method and device based on a Gaussian function, equipment and a storage medium, and relates to the field of metallurgical rolling, a preset sampling point on a steel plate to be detected is measured by adopting a straightness instrument, height data measured by the straightness instrument is obtained, a plate shape matrix is constructed according to the height data, and the plate shape is evaluated according to the plate shape matrix. Fitting the plate shape matrix by adopting a Gaussian function to obtain plate shape defect information, constructing a local evaluation function and an overall evaluation function, evaluating the to-be-detected steel plate according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determining whether the to-be-detected steel plate is qualified or not according to an evaluation result. The defect information of the shape of the steel plate is accurately obtained according to the data of the straightness instrument, the qualification degree of the steel plate is accurately evaluated according to the defect information, the classification precision of the steel plate is improved, manpower and material resources are saved, and the production efficiency of the steel plate is improved.

Description

Technical Field

[0001] The present invention relates to the field of metallurgical rolling technology, and in particular to a plate shape evaluation method, device, equipment and storage medium based on Gaussian function. Background Art

[0002] Steel plate is a very important energy source in the metallurgical process, and quenching technology is one of the most important processes in the heat treatment process of steel plate. After quenching, the toughness and strength of the steel plate will be significantly improved, but during the quenching process, due to changes in temperature and pressure, the steel plate may be deformed or have defects, affecting the performance and quality of the steel plate.

[0003] In the current existing technology, the shape of the steel plate is usually drawn using the flatness meter data received on-site, and then the defects of the steel plate and the degree of defects are manually determined based on the drawn image. However, the quenching process of the steel plate is a highly nonlinear process. Due to the large number of parameters, large errors are easily caused based on manual judgment, and it is impossible to accurately determine whether the steel plate meets the actual production specifications, which ultimately causes a waste of manpower and material resources and reduces the production efficiency of the steel plate. Summary of the invention

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and to provide a plate shape evaluation method, device, equipment and storage medium based on a Gaussian function.

[0005] The present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present disclosure provides a method for evaluating plate shape based on a Gaussian function, the method comprising:

[0007] The preset sampling points on the steel plate to be tested are measured with a straightness meter to obtain the height data measured by the straightness meter;

[0008] Constructing a plate shape matrix according to the height data, fitting the plate shape matrix with a Gaussian function, and obtaining plate shape defect information;

[0009] A local evaluation function and an overall evaluation function are constructed, the steel plate to be inspected is evaluated according to the plate shape defect information, the local evaluation function and the overall evaluation function, and whether the steel plate to be inspected is qualified is determined according to the evaluation result.

[0010] According to a specific embodiment disclosed in the present application, the preset sampling points include sampling points in the length direction and sampling points in the width direction of the steel plate to be tested, and the sampling interval between the sampling points in the length direction and the sampling points in the width direction is 100.

[0011] According to a specific implementation method disclosed in the present application, the step of constructing a plate shape matrix according to the height data, fitting the plate shape matrix with a Gaussian function, and obtaining plate shape defect information includes:

[0012] A Gaussian function is used to characterize a flatness defect:

[0013] Where a is the amplitude, b is the standard deviation in the length direction, c is the standard deviation in the width direction, d is the vertical offset, p is the position in the x direction, and q is the position in the y direction;

[0014] The entire plate shape defect is characterized by the superposition of multiple Gaussian functions:

[0015]

[0016] Where h is the total number of identified defects, a t is the amplitude of the tth defect, b t is the standard deviation of the t-th defect in the length direction, c t is the standard deviation of the t-th defect in the width direction, d t is the vertical offset of the tth defect, p t is the position of the t-th defect in the x direction, q t is the position of the t-th defect in the y direction, and d is the vertical offset.

[0017] According to a specific embodiment disclosed in the present application, the steps of constructing a local evaluation function and an overall evaluation function, evaluating the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determining whether the steel plate to be tested is qualified according to the evaluation result include:

[0018] Using a local evaluation function and plate shape defect information to evaluate the defect severity of the steel plate to be inspected, and obtain a defect score of the steel plate to be inspected;

[0019] Set the defect score threshold and the flatness threshold, and select the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold;

[0020] The overall evaluation function and the main defects are used to evaluate the conformity of the steel plate to be tested.

[0021] According to a specific embodiment disclosed in the present application, the step of using a local evaluation function and plate shape defect information to evaluate the defect severity of the steel plate to be detected to obtain a defect score of the steel plate to be detected includes:

[0022] The local evaluation function is:

[0023] Among them, f t g t defect score.

[0024] According to a specific embodiment disclosed in the present application, the step of setting a defect score threshold and a flatness threshold, and selecting the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold includes:

[0025] If the defect score of the defect in the steel plate to be detected is above the defect score threshold and the flatness of the defect in the steel plate to be detected is above the flatness threshold, it is determined that the defect in the steel plate to be monitored is a major defect.

[0026] According to a specific embodiment disclosed in the present application, the step of evaluating the conformity of the steel plate to be inspected using the overall evaluation function and the main defects includes:

[0027] The overall evaluation function is:

[0028] Where, f is the pass score of the steel plate shape;

[0029] The plate shape conformity of the steel plate to be inspected is evaluated according to the conformity score.

[0030] In a second aspect, an embodiment of the present disclosure provides a plate shape evaluation device based on a Gaussian function, the device comprising:

[0031] A measuring module, used to measure the preset sampling points on the steel plate to be tested using a straightness meter, and obtain height data measured by the straightness meter;

[0032] A fitting module, used to construct a plate shape matrix according to the height data, and fit the plate shape matrix using a Gaussian function to obtain plate shape defect information;

[0033] The evaluation module is used to construct a local evaluation function and an overall evaluation function, evaluate the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determine whether the steel plate to be tested is qualified according to the evaluation result.

[0034] In a third aspect, an electronic device is provided in an embodiment of the present disclosure, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the plate shape evaluation method based on Gaussian function described in any one of the first aspects when executing the computer program.

[0035] In a fourth aspect, a computer-readable storage medium is provided in an embodiment of the present disclosure, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the plate shape evaluation method based on Gaussian function described in any one of the first aspects are implemented.

[0036] The plate shape evaluation method based on Gaussian function provided in the present application uses a straightness meter to measure preset sampling points on the steel plate to be tested, obtains height data measured by the straightness meter, constructs a plate shape matrix according to the height data, fits the plate shape matrix with a Gaussian function to obtain plate shape defect information, constructs a local evaluation function and an overall evaluation function, evaluates the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, determines whether the steel plate to be tested is qualified according to the evaluation result, accurately obtains the defect information of the steel plate shape according to the straightness meter data, and accurately evaluates the conformity of the steel plate according to the defect information, thereby improving the classification accuracy of the steel plates, saving manpower and material resources, and improving the production efficiency of the steel plates.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In each of the drawings, similar components are numbered similarly.

[0039] Figure 1 A schematic flow chart of a plate shape evaluation method based on a Gaussian function provided in an embodiment of the present application is shown;

[0040] Figure 2 A schematic structural diagram of a plate shape evaluation device based on a Gaussian function provided in an embodiment of the present application is shown;

[0041] Figure 3 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0047] Example 1

[0048] like Figure 1 , which is a schematic flow chart of a plate shape evaluation method based on a Gaussian function provided in an embodiment of the present application, and the plate shape evaluation method based on a Gaussian function provided in an embodiment of the present application comprises the following steps:

[0049] Step S101, using a straightness meter to measure the preset sampling points on the steel plate to be tested, and obtaining height data measured by the straightness meter.

[0050] Specifically, a flatness meter is used to measure the flatness and straightness of the steel plate to be tested. Defect information can be obtained by sampling the height data of preset sampling points on the steel plate to be tested and fitting the plate shape based on the Gaussian function.

[0051] Preferably, the preset sampling points include sampling points in the length direction and sampling points in the width direction of the steel plate to be tested, and the sampling interval between the sampling points in the length direction and the sampling points in the width direction is 100.

[0052] It can be understood that a smaller sampling interval can provide more sampling data and improve sampling accuracy. Limiting the sampling interval between the sampling points in the length direction and the sampling points in the width direction of the steel plate to be tested to 100 can ensure sufficient accuracy while ensuring that the calculation speed is not too slow.

[0053] Step S102, constructing a plate shape matrix according to the height data, and fitting the plate shape matrix with a Gaussian function to obtain plate shape defect information.

[0054] The step of constructing a plate shape matrix according to the height data and fitting the plate shape matrix with a Gaussian function to obtain plate shape defect information comprises:

[0055] A Gaussian function is used to characterize a flatness defect:

[0056] Where a is the amplitude, b is the standard deviation in the length direction, c is the standard deviation in the width direction, d is the vertical offset, p is the position in the x direction, and q is the position in the y direction;

[0057] The entire plate shape defect is characterized by the superposition of multiple Gaussian functions:

[0058]

[0059] Where h is the total number of identified defects, a t is the amplitude of the tth defect, b t is the standard deviation of the t-th defect in the length direction, c t is the standard deviation of the t-th defect in the width direction, d t is the vertical offset of the tth defect, p t is the position of the t-th defect in the x direction, q t is the position of the t-th defect in the y direction, and d is the vertical offset.

[0060] In specific implementation, the Gaussian function is a function commonly used in mathematics and science, and is usually used to simulate smooth changes in natural phenomena. In plate shape recognition, the larger the value of a, the more obvious the defect is. b is the standard deviation in the length direction, which controls the diffusion degree of the defect in the x direction. The larger the value of b, the wider the defect is in the length direction. c is the standard deviation in the width direction, which controls the diffusion degree of the defect in the y direction. The larger the value of c, the wider the defect is in the width direction. d is the vertical offset, which indicates the height of the defect relative to the reference plane. The value of d includes positive or negative values, depending on whether the defect is convex or concave. p is the position in the x direction, which indicates the position of the defect center on the x axis. q is the position in the y direction, which indicates the position of the defect center on the y axis. By adjusting these parameters, defects of various shapes and sizes can be accurately simulated. For the entire steel plate shape, it is realized by superimposing multiple Gaussian functions. Each Gaussian function represents a specific defect on the plate surface. By selecting and combining the multiple Gaussian functions, the complex shape of the entire plate surface can be constructed. By using Gaussian functions, the local characteristics of defects can be effectively captured while maintaining the feasibility of calculation.

[0061] When implementing it, a t is the amplitude of the tth defect, a t The larger the value of is, the more obvious the tth defect is. t is the standard deviation of the t-th defect in the length direction, b t The larger the value of is, the wider the tth defect is in the length direction. t is the standard deviation of the t-th defect in the width direction, c t The larger the value of is, the wider the tth defect is in the width direction. t is the vertical offset of the tth defect, p t is the position of the t-th defect in the x direction, q t is the position of the t-th defect in the y direction, and d is the vertical offset, which represents the average height of all defects relative to the reference plane. By superimposing multiple Gaussian functions to describe multiple defects on the plate shape, the shape, size and position of each defect can be accurately described by adjusting the parameters of each Gaussian function. Each Gaussian function only affects the local area of ​​the plate shape. The model can better handle local changes in the plate shape. If the number of defects in the plate shape increases in actual working conditions, more Gaussian functions can be added to the model. In practical applications, the parameters are determined by experiments or data analysis, such as estimating parameter values ​​by fitting experimental data to Gaussian functions.

[0062] Step S103, constructing a local evaluation function and an overall evaluation function, evaluating the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determining whether the steel plate to be tested is qualified according to the evaluation result.

[0063] During specific implementation, local evaluation function and overall evaluation function are used to screen out representative main defects from all defects of the steel plate to be detected.

[0064] The step of constructing a local evaluation function and an overall evaluation function, evaluating the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determining whether the steel plate to be tested is qualified according to the evaluation result includes:

[0065] Using a local evaluation function and plate shape defect information to evaluate the defect severity of the steel plate to be inspected, and obtain a defect score of the steel plate to be inspected;

[0066] Set the defect score threshold and the flatness threshold, and select the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold;

[0067] The overall evaluation function and the main defects are used to evaluate the conformity of the steel plate to be tested.

[0068] Specifically, the defect score is an indicator to measure the severity of the defect, which is related to the area, location and distance of the defect from the reference plane. The flatness is used to measure the surface quality of the plate, which is related to the location and size of the defect. By controlling the flatness, it can be ensured that the shape of the plate meets the production standards.

[0069] The step of using the local evaluation function and the plate shape defect information to evaluate the defect severity of the steel plate to be detected to obtain the defect score of the steel plate to be detected comprises:

[0070] The local evaluation function is:

[0071] Among them, f t g t defect score.

[0072] Understandably, through f t To assess the severity of each defect, f t The larger it is, the more serious the corresponding defect is.

[0073] The step of setting the defect score threshold and the flatness threshold, and selecting the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold, comprises:

[0074] If the defect score of the defect in the steel plate to be detected is above the defect score threshold and the flatness of the defect in the steel plate to be detected is above the flatness threshold, it is determined that the defect in the steel plate to be monitored is a major defect.

[0075] Specifically, by setting the defect score threshold and the flatness threshold, major defects can be screened out and special attention and processing can be given to the major defects.

[0076] The step of using the overall evaluation function and the main defects to evaluate the flatness conformity of the steel plate to be tested comprises:

[0077] The overall evaluation function is:

[0078] Where, f is the pass score of the steel plate shape;

[0079] The plate shape conformity of the steel plate to be inspected is evaluated according to the conformity score.

[0080] Specifically, an overall evaluation function is used to evaluate the overall quality of the plate shape. The larger the f value, the worse the plate shape.

[0081] The plate shape evaluation method based on Gaussian function provided in the above-mentioned embodiment of the present application uses a flatness meter to measure the preset sampling points on the steel plate to be tested, obtains height data measured by the flatness meter, constructs a plate shape matrix according to the height data, fits the plate shape matrix with a Gaussian function to obtain plate shape defect information, constructs a local evaluation function and an overall evaluation function, evaluates the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, determines whether the steel plate to be tested is qualified according to the evaluation result, accurately obtains the defect information of the steel plate shape according to the flatness meter data, and accurately evaluates the conformity of the steel plate according to the defect information, thereby improving the classification accuracy of the steel plates, saving manpower and material resources, and improving the production efficiency of the steel plates.

[0082] Example 2

[0083] like Figure 2 , which is a schematic diagram of the structure of a plate shape evaluation device 200 based on a Gaussian function provided in an embodiment of the present application, and the device includes:

[0084] The measuring module 201 is used to measure the preset sampling points on the steel plate to be tested using a straightness meter to obtain height data measured by the straightness meter;

[0085] A fitting module 202 is used to construct a plate shape matrix according to the height data, and fit the plate shape matrix using a Gaussian function to obtain plate shape defect information;

[0086] The evaluation module 203 is used to construct a local evaluation function and an overall evaluation function, evaluate the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determine whether the steel plate to be tested is qualified according to the evaluation result.

[0087] The Gaussian function-based plate shape assessment device 200 provided in this embodiment can implement the Gaussian function-based plate shape assessment method shown in Embodiment 1, which will not be described again to avoid repetition.

[0088] The plate shape evaluation device based on Gaussian function provided in the embodiment of the present application uses a flatness meter to measure preset sampling points on the steel plate to be tested, obtains height data measured by the flatness meter, constructs a plate shape matrix according to the height data, fits the plate shape matrix with a Gaussian function to obtain plate shape defect information, constructs a local evaluation function and an overall evaluation function, evaluates the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, determines whether the steel plate to be tested is qualified according to the evaluation result, accurately obtains defect information of the steel plate shape according to the flatness meter data, and accurately evaluates the conformity of the steel plate according to the defect information, thereby improving the classification accuracy of the steel plates, saving manpower and material resources, and improving the production efficiency of the steel plates.

[0089] Example 3

[0090] In addition, an embodiment of the present disclosure provides an electronic device 300, including a memory and a processor, wherein the memory stores a computer program.

[0091] For details, see Figure 3 The electronic device 300 includes: a receiver 301, a bus interface and a processor 302.

[0092] In the embodiment of the present invention, the electronic device 300 further includes a memory 303. Figure 3 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 302 and memory represented by memory 303. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The receiver 301 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 302 is responsible for managing the bus architecture and general processing, and the memory 303 may store data used by the processor 302 when performing operations.

[0093] The electronic device 300 provided in the embodiment of the present invention can implement the plate shape evaluation method based on Gaussian function shown in Example 1, which will not be described again to avoid repetition.

[0094] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow chart, and the combination of boxes in the structure diagram and / or the flow chart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0095] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0096] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0097] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plate shape evaluation method based on Gaussian function, characterized in that: The method comprises: The preset sampling points on the steel plate to be tested are measured with a straightness meter to obtain height data measured by the straightness meter; Constructing a plate shape matrix according to the height data, fitting the plate shape matrix with a Gaussian function, and obtaining plate shape defect information; A local evaluation function and an overall evaluation function are constructed, the steel plate to be inspected is evaluated according to the plate shape defect information, the local evaluation function and the overall evaluation function, and whether the steel plate to be inspected is qualified is determined according to the evaluation result.

2. The plate shape evaluation method based on Gaussian function according to claim 1, characterized in that: The preset sampling points include sampling points in the length direction and sampling points in the width direction of the steel plate to be tested, and the sampling interval between the sampling points in the length direction and the sampling points in the width direction is 100.

3. The plate shape evaluation method based on Gaussian function according to claim 1, characterized in that: The step of constructing a plate shape matrix according to the height data and fitting the plate shape matrix with a Gaussian function to obtain plate shape defect information comprises: A Gaussian function is used to characterize a flatness defect: Where a is the amplitude, b is the standard deviation in the length direction, c is the standard deviation in the width direction, d is the vertical offset, p is the position in the x direction, and q is the position in the y direction; The entire plate shape defect is characterized by the superposition of multiple Gaussian functions: Where h is the total number of identified defects, a t is the amplitude of the tth defect, b t is the standard deviation of the t-th defect in the length direction, c t is the standard deviation of the tth defect in the width direction, d t is the vertical offset of the tth defect, p t is the position of the t-th defect in the x direction, q t is the position of the t-th defect in the y direction, and d is the vertical offset.

4. The plate shape evaluation method based on Gaussian function according to claim 1, characterized in that: The step of constructing a local evaluation function and an overall evaluation function, evaluating the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determining whether the steel plate to be tested is qualified according to the evaluation result includes: Using a local evaluation function and plate shape defect information to evaluate the defect severity of the steel plate to be inspected, and obtain a defect score of the steel plate to be inspected; Set the defect score threshold and the flatness threshold, and select the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold; The overall evaluation function and the main defects are used to evaluate the conformity of the steel plate to be tested.

5. The plate shape evaluation method based on Gaussian function according to claim 4, characterized in that: The step of using the local evaluation function and the plate shape defect information to evaluate the defect severity of the steel plate to be detected to obtain the defect score of the steel plate to be detected comprises: The local evaluation function is: Among them, f t g t defect score.

6. The plate shape evaluation method based on Gaussian function according to claim 4, characterized in that: The step of setting the defect score threshold and the flatness threshold, and selecting the main defects in the steel plate to be detected according to the defect score threshold and the flatness threshold, comprises: If the defect score of the defect in the steel plate to be detected is above the defect score threshold and the flatness of the defect in the steel plate to be detected is above the flatness threshold, it is determined that the defect in the steel plate to be monitored is a major defect.

7. The plate shape evaluation method based on Gaussian function according to claim 4, characterized in that: The step of using the overall evaluation function and the main defects to evaluate the flatness conformity of the steel plate to be tested comprises: The overall evaluation function is: Where, f is the pass score of the steel plate shape; The plate shape conformity of the steel plate to be inspected is evaluated according to the conformity score.

8. A plate shape evaluation device based on Gaussian function, characterized in that: The device comprises: A measuring module, used to measure the preset sampling points on the steel plate to be tested using a straightness meter, and obtain height data measured by the straightness meter; A fitting module, used to construct a plate shape matrix according to the height data, and fit the plate shape matrix using a Gaussian function to obtain plate shape defect information; The evaluation module is used to construct a local evaluation function and an overall evaluation function, evaluate the steel plate to be tested according to the plate shape defect information, the local evaluation function and the overall evaluation function, and determine whether the steel plate to be tested is qualified according to the evaluation result.

9. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the plate shape evaluation method based on Gaussian function described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the plate shape evaluation method based on Gaussian function described in any one of claims 1 to 7 are implemented.

Images