Strip quality judgment method and device

Abstract

The present invention discloses a strip steel quality judgment method and device, and relates to the technical field of strip steel quality judgment. The present invention obtains multiple strip steel quality parameters at each measuring point in the length direction of the strip steel, performs parameter identification on each strip steel quality parameter at each measuring point, obtains a first identification set consisting of the parameter identification of each strip steel quality parameter, obtains the first strip steel length between two measuring points corresponding to two adjacent first-class identifications in the first identification set, and if the first strip steel length is less than a first length threshold, modifies all second-class identifications between the two adjacent first-class identifications in the first identification set to first-class identifications; performs defect identification on each measuring point, judges that the strip steel quality at the measuring point with the second-class defect identification is qualified, and judges that the strip steel quality at the measuring point with the first-class defect identification is unqualified, so as to judge whether the quality of each section of strip steel is qualified.

Description

Technical Field

[0001] The present invention relates to the technical field of strip steel quality judgment, and in particular to a strip steel quality judgment method and device. Background Art

[0002] Hot-rolled or cold-rolled steel strip may contain defects. During production, it's necessary to determine the quality of each strip segment to further calculate the defect rate or determine whether the qualified strip can be coiled. However, the industry currently lacks a feasible solution for determining the quality of each strip segment. Summary of the Invention

[0003] The present invention solves the technical problem of how to judge whether the quality of each section of steel strip is qualified by providing a steel strip quality judgment method and device.

[0004] On the one hand, the present invention provides the following technical solutions:

[0005] A method for judging the quality of a strip steel comprises:

[0006] Obtain various strip quality parameters at each measuring point along the strip length;

[0007] Performing parameter identification on each of the strip quality parameters at each of the measurement points to obtain a first identification set consisting of the parameter identification of each of the strip quality parameters; wherein, if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification;

[0008] sorting the parameter identifiers in the first identifier set in ascending order of the measurement points, and obtaining a first strip length between two measurement points corresponding to two adjacent first-category identifiers in the first identifier set;

[0009] If the length of the first steel strip is less than a first length threshold, all the second-class identifiers between two adjacent first-class identifiers in the first identifier set are modified to first-class identifiers;

[0010] Defect identification is performed on each of the measurement points; wherein, if the parameter identification of at least one of the strip quality parameters at the measurement point is a Class I identification, the defect identification is a Class I identification; if the parameter identification of each of the strip quality parameters at the measurement point is a Class II identification, the defect identification is a Class II identification;

[0011] The quality of the strip steel at the measuring point where the defect mark is a second-class mark is judged to be qualified, and the quality of the strip steel at the measuring point where the defect mark is a first-class mark is judged to be unqualified.

[0012] Preferably, after marking defects at each of the measurement points, the method further includes:

[0013] sorting the defect identifiers of the measurement points in ascending order of the measurement points to obtain a second identifier set consisting of the defect identifiers;

[0014] Obtaining a second strip length between two measuring points corresponding to two adjacent first-class identifiers in the second identifier set;

[0015] If the length of the second steel strip is less than a second length threshold, all second-class identifiers between two adjacent first-class identifiers in the second identifier set are modified to first-class identifiers;

[0016] The steel strip at the measuring point where the defect mark is a second-class mark is judged to be a qualified product, and the steel strip at the measuring point where the defect mark is a first-class mark is judged to be a degraded product.

[0017] Preferably, after marking defects at each of the measurement points, the method further includes:

[0018] Obtaining the total length of the steel strip and the length of the third steel strip corresponding to all the measurement points where the defect is identified as a type one;

[0019] The ratio of the third steel strip length to the total length is calculated.

[0020] Preferably, after calculating the ratio of the third steel strip length to the total length, the method further comprises:

[0021] If the ratio of the third steel strip length to the total length is less than 10%, the steel strip is judged to be a qualified product;

[0022] If the ratio of the third steel strip length to the total length is between 10% and 20%, the steel strip is determined to be an agreed product;

[0023] If the ratio of the third steel strip length to the total length is greater than 20%, the steel strip is determined to be usable material.

[0024] On the other hand, the present invention also provides the following technical solutions:

[0025] A strip steel quality judgment device, comprising:

[0026] An acquisition module is used to obtain various strip quality parameters at each measuring point in the strip length direction;

[0027] an identification module, configured to perform parameter identification on each of the strip quality parameters at each of the measurement points to obtain a first identification set consisting of the parameter identification of each of the strip quality parameters; wherein, if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification;

[0028] The acquisition module is further configured to sort the parameter identifiers in the first identifier set in ascending order of the measurement points, and acquire a first strip length between two measurement points corresponding to two adjacent first-category identifiers in the first identifier set;

[0029] The identification module is further configured to modify all second-class identifications between two adjacent first-class identifications in the first identification set to first-class identifications if the length of the first steel strip is less than a first length threshold;

[0030] The identification module is further configured to identify defects at each of the measurement points; wherein, if the parameter identification of at least one of the strip quality parameters at the measurement point is a Class I identification, the defect identification is a Class I identification; and if the parameter identification of each of the strip quality parameters at the measurement point is a Class II identification, the defect identification is a Class II identification;

[0031] The judgment module is used to judge that the quality of the strip steel at the measuring point where the defect mark is a second-class mark is qualified, and judge that the quality of the strip steel at the measuring point where the defect mark is a first-class mark is unqualified.

[0032] Preferably, the identification module is further configured to sort the defect identifications of the measurement points in ascending order of the measurement points to obtain a second identification set consisting of the defect identifications;

[0033] The acquisition module is further configured to acquire a second strip length between two measurement points corresponding to two adjacent first-class identifiers in the second identifier set;

[0034] The identification module is further configured to modify all second-class identifications between two adjacent first-class identifications in the second identification set to first-class identifications if the second steel strip length is less than a second length threshold;

[0035] The judgment module is further configured to judge that the steel strip at the measuring point where the defect mark is a second-class mark is a qualified product, and judge that the steel strip at the measuring point where the defect mark is a first-class mark is a degraded product.

[0036] Preferably, the strip steel quality judgment device further includes a calculation module;

[0037] The acquisition module is further configured to acquire the total length of the steel strip and the length of the third steel strip corresponding to all the measurement points where the defect is identified as a type one.

[0038] The calculation module is used to calculate the ratio of the third strip length to the total length.

[0039] Preferably, the judgment module is also used to judge that the strip is a qualified product if the ratio of the third strip length to the total length is less than 10%; to judge that the strip is an agreed product if the ratio of the third strip length to the total length is between 10% and 20%; and to judge that the strip is a usable material if the ratio of the third strip length to the total length is greater than 20%.

[0040] On the other hand, the present invention also provides the following technical solutions:

[0041] An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above-mentioned strip steel quality judgment methods is implemented.

[0042] On the other hand, the present invention also provides the following technical solutions:

[0043] A computer-readable storage medium stores a computer program, which implements any of the above-mentioned strip quality judgment methods when executed by a processor.

[0044] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0045] The present invention obtains multiple strip quality parameters at each measuring point in the length direction of the strip, performs parameter identification on each strip quality parameter at each measuring point, obtains a first identification set composed of the parameter identification of each strip quality parameter, sorts the parameter identifications in the first identification set in ascending order of the measuring points, obtains the first strip length between two measuring points corresponding to two adjacent first-class identifications in the first identification set, if the first strip length is less than the first length threshold, then all second-class identifications between two adjacent first-class identifications in the first identification set are modified to first-class identifications; performs defect identification on each measuring point, judges that the strip quality at the measuring point with the defect identification as the second-class identification is qualified, and judges that the strip quality at the measuring point with the defect identification as the first-class identification is unqualified, and can judge whether the quality of each section of strip is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 Flowchart of a method for determining strip steel quality according to an embodiment of the present invention;

[0048] Figure 2 Schematic diagram of a strip steel quality judgment device in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The embodiment of the present invention solves the technical problem of how to judge whether the quality of each section of strip steel is qualified by providing a strip steel quality judgment method and device.

[0050] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0051] like Figure 1 As shown, the strip steel quality judgment method of this embodiment includes:

[0052] Step S1, obtaining a plurality of strip quality parameters at each measuring point in the strip length direction;

[0053] Step S2: performing parameter identification on each strip quality parameter at each measurement point to obtain a first identification set consisting of parameter identifications of each strip quality parameter; wherein, if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification;

[0054] Step S3, sorting the parameter identifiers in the first identifier set in ascending order of the measurement points, and obtaining the first strip length between two measurement points corresponding to two adjacent first-class identifiers in the first identifier set;

[0055] Step S4: if the length of the first steel strip is less than the first length threshold, all the second-class identifiers between two adjacent first-class identifiers in the first identifier set are modified to first-class identifiers;

[0056] Step S5: marking defects at each measuring point; if the parameter identification of at least one strip quality parameter at the measuring point is a Class I identification, the defect identification is a Class I identification; if the parameter identification of each strip quality parameter at the measuring point is a Class II identification, the defect identification is a Class II identification;

[0057] Step S6: determine that the quality of the strip steel at the measuring point where the defect mark is the second type mark is qualified, and determine that the quality of the strip steel at the measuring point where the defect mark is the first type mark is unqualified.

[0058] In step S1, measurement points are selected at regular intervals along the length of the strip, for example, every 1 meter. Strip quality parameters may include thickness, width, crown, wedge, coiling temperature, finishing temperature, annealing temperature, and straightening elongation. The following description assumes that strip quality parameters include thickness and crown, with Category 1 marked as 1 and Category 2 marked as 0.

[0059] Assuming the total length of the strip is 838 m, the preset parameter range for thickness is 2.87 to 3.13, and the preset parameter range for crown is 20 to 60, if the strip thickness at the 0 m measurement point is 3.00 and the strip crown is 19, then the parameter identifier for thickness at the 0 m measurement point is 0, and the parameter identifier for crown is 1. Similarly, we can obtain the first identifier set consisting of the parameter identifiers for thickness and the first identifier set consisting of the parameter identifiers for crown at all measurement points, as shown in Table 1. Strip quality parameters outside the preset parameter range indicate strip defects.

[0060] Table 1

[0061]

[0062]

[0063] According to step S3, the parameter identifiers within the first identifier set corresponding to thickness are sorted in ascending order of measurement points, and the parameter identifiers within the first identifier set corresponding to crown are sorted in ascending order of measurement points, as shown in Table 1. For the first identifier set corresponding to thickness, the two measurement points corresponding to two adjacent first-class identifiers include the 31m measurement point and the 36m measurement point, and the length of the first strip between the 31m measurement point and the 36m measurement point is 5m. For the first identifier set corresponding to crown, the two measurement points corresponding to two adjacent first-class identifiers include the 157m measurement point and the 297m measurement point, and also include the 546m measurement point and the 606m measurement point. The length of the first strip between the 157m measurement point and the 297m measurement point is 140m, and the length of the first strip between the 546m measurement point and the 606m measurement point is 60m. Assuming the first length threshold is 10m, the first strip length between the 31m and 36m measurement points is less than the first length threshold, so the thickness parameter flags for the 32m to 35m measurement points are modified to 1. The first strip lengths between the 157m and 297m measurement points, and between the 546m and 606m measurement points, are both greater than the first length threshold and remain unchanged, as shown in Table 2. The reason for modifying parameter flags based on the first length threshold is that if the length of the undefective strip between two defective measurement points is very short, the defects in this section of the strip are considered continuous, and the quality of this section of the strip should be considered unacceptable.

[0064] Table 2

[0065]

[0066]

[0067] As shown in Table 3, after the parameter identification is modified, the defect identification at the 24m measurement point is assigned a Class I identification of 1 because the crown parameter identification at the 24m measurement point is Class I identification 1. Since the thickness parameter identification and crown parameter identification at the measurement points between 158 and 296m are both Class II identification 0, the defect identification at the measurement points between 158 and 296m is Class II identification 0. The reason for defect identification at each measurement point is that if a measurement point has at least one of multiple defects, the strip quality at that measurement point is considered unqualified. Only when a measurement point is free of defects can the strip quality at that measurement point be considered qualified.

[0068] Table 3

[0069]

[0070]

[0071] According to step S6, it can be determined that the quality of the three sections of strip steel at 0-157m, 297-546m, and 606-838m is unqualified, and the quality of the two sections of strip steel at 158-296m and 547-605m is qualified. In this way, it can be finally determined whether the quality of each section of strip steel is qualified.

[0072] In actual production, qualified steel coils have minimum requirements for strip length, such as requiring a minimum steel coil length of 150m. Steel coils shorter than 150m should be considered downgraded. To accurately determine the strip quality grade, after step S5, the strip quality determination method of this embodiment may further include: sorting the defect identifiers of the measurement points in ascending order to obtain a second identifier set consisting of the defect identifiers; obtaining the second strip length between two measurement points corresponding to two adjacent first-class identifiers within the second identifier set; if the second strip length is less than a second length threshold, modifying all second-class identifiers between two adjacent first-class identifiers within the second identifier set to first-class identifiers; determining that the strip at the measurement point with the second-class defect identifier is a qualified product, and determining that the strip at the measurement point with the first-class defect identifier is a downgraded product.

[0073] The defect identifiers in Table 3 have been sorted. The adjacent Class A identifiers in the second identifier set include Class A identifier 1 at the 157m measurement point and Class A identifier 1 at the 297m measurement point. They also include Class A identifier 1 at the 546m measurement point and Class A identifier 1 at the 606m measurement point. Assuming the second length threshold is 150m, and the length of the second strip between the 157m and 297m measurement points is 140m, which is less than 150m, the defect identifiers of all measurement points between 157m and 297m are modified to 1. Since the length of the second strip between the 546m and 606m measurement points is 60m, which is less than 150m, the defect identifiers of all measurement points between 546m and 606m are modified to 1, as shown in Table 4. Ultimately, the defect identifiers of all measurement points are 1, and the entire strip from 0-838m is judged to be downgraded.

[0074] Table 4

[0075]

[0076]

[0077] In this embodiment, during actual production, it is also necessary to calculate the defect inclusion rate of the steel strip. That is, after step S5, the steel strip quality determination method of this embodiment may further include: obtaining the total length of the steel strip and the third steel strip length corresponding to all measurement points where the defect is identified as Class I; and calculating the ratio of the third steel strip length to the total length. In Table 3, the third steel strip length corresponding to all measurement points where the defect is identified as Class I includes three sections of steel strip: 0-157m, 297-546m, and 606-838m, with lengths of 157m, 249m, and 232m, respectively. The third steel strip length = 157 + 249 + 232 = 638m, and the defect inclusion rate = 638 / 838 = 76%.

[0078] Furthermore, after obtaining the defect mixing rate, the steel strip can be classified into different quality grades based on the defect mixing rate. That is, after calculating the ratio of the third steel strip length to the total length, the steel strip quality determination method of this embodiment can further include: if the ratio of the third steel strip length to the total length is less than 10%, determining the steel strip as a qualified product; if the ratio of the third steel strip length to the total length is between 10% and 20%, determining the steel strip as an agreed product; and if the ratio of the third steel strip length to the total length is greater than 20%, determining the steel strip as usable material. The steel strips in Table 3 are usable materials.

[0079] like Figure 2 As shown, this embodiment also provides a strip steel quality judgment device, comprising:

[0080] An acquisition module is used to obtain various strip quality parameters at each measuring point in the strip length direction;

[0081] an identification module, configured to perform parameter identification on each strip quality parameter at each measurement point, thereby obtaining a first identification set consisting of parameter identifications of each strip quality parameter; wherein if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification;

[0082] The acquisition module is further used to sort the parameter identifiers in the first identifier set in ascending order of the measurement points, and obtain the first strip length between two measurement points corresponding to two adjacent first-class identifiers in the first identifier set;

[0083] The identification module is further configured to modify all second-class identifications between two adjacent first-class identifications in the first identification set into first-class identifications if the length of the first steel strip is less than a first length threshold;

[0084] The identification module is further used to identify defects at each measurement point; wherein, if the parameter identification of at least one strip quality parameter at the measurement point is a Class I identification, the defect identification is a Class I identification; if the parameter identification of each strip quality parameter at the measurement point is a Class II identification, the defect identification is a Class II identification;

[0085] The judgment module is used to judge that the quality of the strip steel at the measuring point where the defect mark is the second category mark is qualified, and judge that the quality of the strip steel at the measuring point where the defect mark is the first category mark is unqualified.

[0086] Furthermore, the identification module is also used to sort the defect identifications of the measurement points in ascending order of the measurement points to obtain a second identification set consisting of defect identifications; the acquisition module is also used to obtain the second strip length between two measurement points corresponding to two adjacent first-class identifications in the second identification set; the identification module is also used to modify all second-class identifications between two adjacent first-class identifications in the second identification set to first-class identifications if the second strip length is less than a second length threshold; the judgment module is also used to judge that the strip at the measurement point where the defect identification is a second-class identification is a qualified product, and judge that the strip at the measurement point where the defect identification is a first-class identification is a degraded product.

[0087] Furthermore, the strip quality judgment device also includes a calculation module; an acquisition module, which is also used to obtain the total length of the strip and the third strip length corresponding to all measurement points with defects identified as a type of identification; and a calculation module, which is used to calculate the ratio of the third strip length to the total length.

[0088] Furthermore, the judgment module is also used to judge that the strip is a qualified product if the ratio of the third strip length to the total length is less than 10%; to judge that the strip is an agreed product if the ratio of the third strip length to the total length is between 10% and 20%; and to judge that the strip is a usable material if the ratio of the third strip length to the total length is greater than 20%.

[0089] Based on the same inventive concept as the strip quality judgment method described above, this embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and runnable on the processor, wherein when the processor executes the program, the steps of any one of the strip quality judgment methods described above are implemented.

[0090] Among them, the bus architecture (represented by the bus), the bus can include any number of interconnected buses and bridges, and the bus links together various circuits including one or more processors represented by the processor and memory represented by the memory. The bus can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface between the bus and the receiver and transmitter. The receiver and transmitter can be the same component, namely a transceiver, which provides a unit for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus and general processing, while the memory can be used to store data used by the processor when performing operations.

[0091] Since the electronic device described in this embodiment is the electronic device used to implement the strip quality determination method in the embodiment of the present invention, and based on the strip quality determination method described in the embodiment of the present invention, those skilled in the art will be able to understand the specific implementation of the electronic device of this embodiment and its various variations, so how the electronic device implements the method in the embodiment of the present invention will not be described in detail here. As long as those skilled in the art can implement the electronic device used in the strip quality determination method in the embodiment of the present invention, it falls within the scope of protection of the present invention.

[0092] Based on the same inventive concept as the above-mentioned strip quality judgment method, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements any of the above-mentioned strip quality judgment methods.

[0093] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0095] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0096] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0097] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0098] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for judging the quality of a steel strip, characterized in that: include: Obtain various strip quality parameters at each measuring point along the strip length; Performing parameter identification on each of the strip quality parameters at each of the measurement points to obtain a first identification set consisting of the parameter identification of each of the strip quality parameters; wherein, if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification; sorting the parameter identifiers in the first identifier set in ascending order of the measurement points, and obtaining a first strip length between two measurement points corresponding to two adjacent first-category identifiers in the first identifier set; If the length of the first steel strip is less than a first length threshold, all the second-class identifiers between two adjacent first-class identifiers in the first identifier set are modified to first-class identifiers; Defect identification is performed on each of the measurement points; wherein, if the parameter identification of at least one of the strip quality parameters at the measurement point is a Class I identification, the defect identification is a Class I identification; if the parameter identification of each of the strip quality parameters at the measurement point is a Class II identification, the defect identification is a Class II identification; The quality of the strip steel at the measuring point where the defect mark is a second-class mark is judged to be qualified, and the quality of the strip steel at the measuring point where the defect mark is a first-class mark is judged to be unqualified.

2. The method for judging the quality of a steel strip according to claim 1, wherein: After marking defects at each of the measurement points, the method further includes: sorting the defect identifiers of the measurement points in ascending order of the measurement points to obtain a second identifier set consisting of the defect identifiers; Obtaining a second strip length between two measuring points corresponding to two adjacent first-class identifiers in the second identifier set; If the length of the second steel strip is less than a second length threshold, all second-class identifiers between two adjacent first-class identifiers in the second identifier set are modified to first-class identifiers; The steel strip at the measuring point where the defect mark is a second-class mark is judged to be a qualified product, and the steel strip at the measuring point where the defect mark is a first-class mark is judged to be a degraded product.

3. The method for judging the quality of a steel strip according to claim 1, wherein: After marking defects at each of the measurement points, the method further includes: Obtaining the total length of the steel strip and the length of the third steel strip corresponding to all the measurement points where the defect is identified as a type one; The ratio of the third steel strip length to the total length is calculated.

4. The method for judging the quality of a steel strip according to claim 3, wherein: After calculating the ratio of the third steel strip length to the total length, the method further includes: If the ratio of the third steel strip length to the total length is less than 10%, the steel strip is judged to be a qualified product; If the ratio of the third steel strip length to the total length is between 10% and 20%, the steel strip is determined to be an agreed product; If the ratio of the third steel strip length to the total length is greater than 20%, the steel strip is determined to be usable material.

5. A strip steel quality judgment device, characterized in that: include: An acquisition module is used to obtain various strip quality parameters at each measuring point in the strip length direction; an identification module, configured to perform parameter identification on each of the strip quality parameters at each of the measurement points to obtain a first identification set consisting of the parameter identification of each of the strip quality parameters; wherein, if the strip quality parameter is outside a preset parameter range corresponding to the strip quality parameter, the parameter identification is a first-class identification; and if the strip quality parameter is within the preset parameter range corresponding to the strip quality parameter, the parameter identification is a second-class identification; The acquisition module is further configured to sort the parameter identifiers in the first identifier set in ascending order of the measurement points, and acquire a first strip length between two measurement points corresponding to two adjacent first-category identifiers in the first identifier set; The identification module is further configured to modify all second-class identifications between two adjacent first-class identifications in the first identification set to first-class identifications if the length of the first steel strip is less than a first length threshold; The identification module is further configured to identify defects at each of the measurement points; wherein, if the parameter identification of at least one of the strip quality parameters at the measurement point is a Class I identification, the defect identification is a Class I identification; and if the parameter identification of each of the strip quality parameters at the measurement point is a Class II identification, the defect identification is a Class II identification; The judgment module is used to judge that the quality of the strip steel at the measuring point where the defect mark is a second-class mark is qualified, and judge that the quality of the strip steel at the measuring point where the defect mark is a first-class mark is unqualified.

6. The strip steel quality judging device according to claim 5, characterized in that: The identification module is further configured to sort the defect identifications of the measurement points in ascending order of the measurement points to obtain a second identification set consisting of the defect identifications; The acquisition module is further configured to acquire a second strip length between two measuring points corresponding to two adjacent first-class identifiers in the second identifier set; The identification module is further configured to modify all second-class identifications between two adjacent first-class identifications in the second identification set to first-class identifications if the second steel strip length is less than a second length threshold; The judgment module is further configured to judge that the steel strip at the measuring point where the defect mark is a second-class mark is a qualified product, and judge that the steel strip at the measuring point where the defect mark is a first-class mark is a degraded product.

7. The strip steel quality judging device according to claim 5, characterized in that: Also included is a calculation module; The acquisition module is further configured to acquire the total length of the steel strip and the length of the third steel strip corresponding to all the measurement points where the defect is identified as a type one. The calculation module is used to calculate the ratio of the third strip length to the total length.

8. The strip steel quality judging device according to claim 7, characterized in that: The judgment module is also used to judge that the strip is a qualified product if the ratio of the third strip length to the total length is less than 10%; to judge that the strip is an agreed product if the ratio of the third strip length to the total length is between 10% and 20%; and to judge that the strip is a usable material if the ratio of the third strip length to the total length is greater than 20%.

9. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and operable on the processor, wherein when the processor executes the program, the method for judging the quality of a steel strip according to any one of claims 1 to 4 is implemented.

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 method for determining the quality of a steel strip according to any one of claims 1 to 4 is implemented.

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