Production line control method, device and storage medium based on digital twin

Abstract

The present invention discloses a production line control method, device and storage medium based on digital twin, which belongs to the technical field of plate processing. The present invention acquires the production data and rolling order data of the target production line, and constructs a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each roller; determining roller demand information corresponding to different orders according to the rolling order data, and obtaining multiple roller demand information; determining multiple production scheduling plans and corresponding roller changing plans according to the multiple roller demand information and the production line digital model, wherein the production scheduling plans and the roller changing plans correspond one to one; selecting and executing the production scheduling plan corresponding to the target roller changing plan among the multiple roller changing plans, thereby improving the efficiency of the production line.

Description

Technical Field

[0001] The present invention relates to the field of plate processing, and in particular to a production line control method, device and storage medium based on digital twin. Background Art

[0002] With the gradual application of automation technology in rolling, the rolling technology and processes for steel and aluminum materials have been gradually improved. Fully automated production lines are generally used in plate production. However, fully automated production lines do not mean that manual operation is completely unnecessary. At present, due to the long-term rolling process, the rollers will gradually wear, resulting in a smaller roller diameter, and there may also be problems such as changes in roller shape. Therefore, roll changing operations are required. At present, roll changing operations are still based on the control of production personnel, which causes the roll changing operations to affect the continuous production of the production line, thereby reducing the efficiency of the production line.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a production line control method, device and storage medium based on digital twin, aiming to improve the efficiency of the production line. To achieve the above purpose, the present invention provides a production line control method based on digital twin, and the production line control method based on digital twin includes the following steps:

[0005] Acquire production data and rolling order data of a target production line, and construct a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller;

[0006] Determine the roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information;

[0007] Determine a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one;

[0008] Select and execute the production scheduling plan corresponding to the target roll changing plan among multiple roll changing plans.

[0009] Optionally, the step of selecting and executing a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans includes:

[0010] Obtain the preset scheme evaluation conditions;

[0011] When the preset scheme evaluation condition is the first evaluation condition, the number of roll changes of each roll change scheme and the average number of roll changes in a single roll change are calculated, and a target roll change scheme is determined according to the number of roll changes and the number of roll changes;

[0012] Execute the production scheduling plan corresponding to the target roll changing plan.

[0013] Optionally, the target production data includes: plate size, plate material, plate surface state, plate plane shape and total plate quantity, the total plate quantity includes the demand quantity of each plate, and the step of determining the roller demand information corresponding to different orders according to the rolling order data to obtain multiple roller demand information includes:

[0014] Determine the type of roller corresponding to each order according to the plate size, plate material, plate surface state, plate plane shape and preset corresponding relationship corresponding to each order;

[0015] Determine the roller operation time demand data corresponding to each roller type in each order according to the demand quantity of the plates corresponding to the order;

[0016] The roller type and roller operation time requirement data corresponding to the same order are used as roller requirement information to obtain multiple roller requirement information.

[0017] Optionally, the step of determining a plurality of roll changing plans and corresponding production scheduling plans according to the plurality of roll demand information and the production line digital model comprises:

[0018] Generate a plurality of production scheduling plans according to a plurality of roll demand information;

[0019] A corresponding roll changing plan is determined according to each production scheduling plan and the production line digital model.

[0020] Optionally, the roll requirement information includes: roll type and corresponding roll running time requirement data

[0021] The step of generating a plurality of production scheduling plans according to a plurality of roll demand information comprises:

[0022] When there is the roller operation time demand data greater than or equal to the preset time threshold, the corresponding roller operation time demand data is divided into a plurality of sub-roller operation time demand data, and a plurality of the production scheduling plans are determined according to the plurality of sub-roller operation time demand data and the roller operation time demand data;

[0023] When there is no roller operation time requirement data greater than or equal to the preset time threshold, a plurality of production scheduling plans are determined according to the roller operation time requirement data.

[0024] Optionally, the target production line is provided with an image acquisition module, the production data includes: image data, historical operation information and defect rate, and the step of acquiring the production data of the target production line includes:

[0025] Controlling the image acquisition module to obtain image data of each roller;

[0026] Recording the historical operation information of each roller;

[0027] Obtain the defect rate of products produced by each roll.

[0028] Optionally, after the step of selecting and executing a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans, the method further includes:

[0029] When a new order is received, the execution data of the production scheduling plan is obtained, and the digital model of the production line is updated according to the execution data, the rolling order data is updated according to the new order and the execution data, and the step of determining the roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information is returned to execute.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also provides a production line control device based on digital twin, and the production line control device based on digital twin includes:

[0031] A construction module is used to obtain production data and rolling order data of a target production line, and to construct a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller;

[0032] An analysis module, used to determine the roll demand information corresponding to different orders according to the rolling order data, and obtain multiple roll demand information;

[0033] A generating module, used for determining a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one;

[0034] The execution module is used to select and execute a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans.

[0035] In addition, to achieve the above-mentioned objectives, the present invention also provides a production line control device based on digital twins, and the production line control device based on digital twins includes: a memory, a processor, and a production line control program based on digital twins stored on the memory and executable on the processor, and the production line control program based on digital twins is configured to implement the steps of the production line control method based on digital twins described in any one of the above items.

[0036] In addition, to achieve the above-mentioned purpose, the present invention also provides a storage medium, on which a production line control program based on digital twin is stored. When the production line control program based on digital twin is executed by a processor, the steps of the production line control method based on digital twin described in any one of the above items are implemented.

[0037] The present invention proposes a production line control method based on digital twins. The method acquires production data and rolling order data of a target production line, constructs a production line digital model of the target production line according to the production data, and determines roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information, which can effectively determine production needs and the operation status of the rolling mill, and determine multiple production scheduling plans and corresponding roll changing plans based on the multiple roll demand information and the production line digital model. Compared with whether to change rolls based on the control of production personnel, determining the roll changing plan and the production scheduling plan at the same time can avoid stopping for roll changing during the production process, thereby effectively improving the production efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a production line control device based on digital twins in a hardware operating environment involved in an embodiment of the present invention;

[0039] Figure 2 It is a flow chart of the first embodiment of the production line control method based on digital twin of the present invention;

[0040] Figure 3 It is a flow chart of a second embodiment of a production line control method based on digital twins of the present invention;

[0041] Figure 4 It is a flow chart of a third embodiment of a production line control method based on digital twins of the present invention;

[0042] Figure 5 It is a flow chart of a fifth embodiment of a production line control method based on digital twins of the present invention;

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0045] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a production line control device based on digital twins in the hardware operating environment involved in an embodiment of the present invention.

[0046] like Figure 1 As shown, the production line control device based on digital twins may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, an interactive device 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The interactive device 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional interactive device 1003 may also be connected to the communication bus through a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0047] Those skilled in the art will understand that Figure 1 The structure shown in does not constitute a limitation on the production line control device based on digital twins, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0048] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a data storage module, a network communication module, a user interface module, and a production line control program based on digital twins.

[0049] exist Figure 1 In the digital twin-based production line control device shown, the network interface 1004 is mainly used for data communication with other devices; the interactive device 1003 is mainly used for data interaction with users; the processor 1001 and the memory 1005 in the digital twin-based production line control device of the present invention can be set in the digital twin-based production line control device, and the digital twin-based production line control device calls the digital twin-based production line control program stored in the memory 1005 through the processor 1001, and executes the digital twin-based production line control method provided by the embodiment of the present invention.

[0050] The embodiment of the present invention provides a production line control method based on digital twin, referring to Figure 2 , Figure 2 This is a flow chart of a first embodiment of a production line control method based on digital twins of the present invention.

[0051] In this embodiment, the production line control method based on digital twins includes:

[0052] Step S1, obtaining production data and rolling order data of a target production line, and constructing a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller;

[0053] The production data here include: the performance parameters of the rolling mill on the production line and the data recorded during the production process, such as rolling force and torque, etc. Preferably, the rolling mill here is an adjustable rolling mill, which is provided with multiple rollers, including twelve rollers, twenty rollers and thirty-six rollers. The rolling mill can be called a rolling mill. On the rolling mill, not all rollers need to be used in all rolling processes. This is selected according to the requirements of the plate to be produced. The status information of the rollers on the rolling mill is related to its own characteristics and the duration of operation. Specifically, the production line digital model is generated according to the production data and the preset numerical twin model.

[0054] Step S2, determining the roll demand information corresponding to different orders according to the rolling order data, and obtaining a plurality of roll demand information;

[0055] In this embodiment, the roller requirement information refers to the model and parameters of the rollers to be used. The roller parameters may include: roller usage, roller type, roller hardness, roller quality grade and other parameters. Since different orders require different parameters such as the material, thickness, and surface shape of the plate, multiple roller requirement information can be obtained through historical processing data. Since the current roller machine automatically completes the rolling process by inputting control parameters in advance, the roller requirement information can be determined before the plate is processed.

[0056] Step S3, determining a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one;

[0057] Generally speaking, it is necessary to avoid changing rolls during the processing of an order, so as to avoid the situation where the production errors of the same order are different due to changing rolls. Of course, for processing requirements of a larger processing volume, it can be processed in batches. In this embodiment, preferably, all production scheduling plans are listed, and the production line digital model is simulated and run, and the time when the roll needs to be changed or the process node of the roll change is determined.

[0058] Specifically, during the simulation operation of the digital model of the production line, when it is simulated that a roll change is required during the processing of the first order, it is determined that the roll change is performed before the processing of the first order. It should be made clear here that the roll change here is not only for the rolls required for the processing of the first order, but also includes: other rolls that enter the roll change requirement. For example: after the processing of the second order is completed, the second type of rolls in the rolling mill need to be replaced, but the third order after the second order uses a roll that is different from the roll used in the second order and is a third type of roll. Therefore, it is not necessary to replace the second type of roll before the third order, and the fourth order after the third order replaces the second type of roll while replacing the fourth type of roll of the fourth order. Thereby, the number of roll replacements can be saved. In this embodiment, it is actually determined by judging whether the roll change can be avoided during the rolling process, so as to determine the time or process node for the roll change. Therefore, for the same production scheduling plan, the optimal plan is used as the roll replacement plan.

[0059] Step S4, selecting and executing a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans.

[0060] In this embodiment, a production scheduling scheme corresponding to a target roll changing scheme among multiple roll changing schemes is selected according to different selection criteria for production.

[0061] In this embodiment, by acquiring the production data and rolling order data of the target production line, a production line digital model of the target production line is constructed according to the production data, and the rolling mill demand information corresponding to different orders is determined according to the rolling order data, and multiple rolling mill demand information is obtained, which can effectively determine the production needs and the operation status of the rolling mill, and determine multiple production scheduling plans and corresponding roll changing plans based on the multiple roll demand information and the production line digital model. Compared with whether to change rolls based on the control of production personnel, determining the roll changing plan and the production scheduling plan at the same time can avoid stopping for roll changing during the production process, thereby effectively improving the production efficiency of the production line.

[0062] Further, based on the first embodiment, a second embodiment of the production line control method based on digital twin of the present invention is proposed. In this embodiment, referring to Figure 3 The step of selecting and executing a production scheduling plan corresponding to a target roll changing plan from among multiple roll changing plans comprises:

[0063] Step S41, obtaining preset scheme evaluation conditions;

[0064] The preset scheme evaluation conditions here are used to determine the production scheduling plan to be executed. During the execution of step S41, the preset scheme evaluation conditions can be directly obtained in the storage unit. The preset scheme evaluation conditions here can generally be set by the production supervisor or employee, and recorded and saved. The production supervisor or employee can set or modify the preset scheme evaluation conditions according to the actual production situation. Optionally, the preset scheme evaluation conditions are regularly updated by the production supervisor, and the update cycle is 3 months. This is because the demand for steel is different in different seasons and there are differences among customers. The preset scheme evaluation conditions can be the first evaluation condition or the second evaluation condition.

[0065] Since the production scheduling plan and the roll changing plan correspond one to one, it is not limited here that the preset plan evaluation condition specifically utilizes the production scheduling plan or the roll changing plan.

[0066] Step S42, when the preset scheme evaluation condition is the first evaluation condition, calculating the number of roll changes of each roll change scheme and the average number of roll changes in a single roll change, and determining a target roll change scheme according to the number of roll changes and the number of roll changes;

[0067] When the preset scheme evaluation condition is the first evaluation condition, the number of roll changes of each roll change scheme and the average number of roll changes per roll change are calculated, and the roll change scheme with the minimum number of roll changes is selected as the target roll change scheme. If there is more than one roll change scheme with the minimum number of roll changes, the target roll change scheme is determined according to the average number of roll changes per roll change. In other embodiments, when the preset scheme evaluation condition is the second evaluation condition, the priority data of each order in the rolling order data is obtained, and the target roll change scheme is determined according to the priority data; when the preset scheme evaluation condition is the third evaluation condition, the order time of each order in the rolling order data is obtained, and the target roll change scheme is determined according to the order time.

[0068] Step S43, executing the production scheduling plan corresponding to the target roll changing plan.

[0069] In this embodiment, the number of roll changes for each roll changing plan and the average number of roll changes in a single roll changing are calculated, and a target roll changing plan is determined based on the number of roll changes and the number of roll changes, so that a production scheduling plan with fewer roll changes can be selected, thereby improving the production efficiency of the production line.

[0070] Further, based on the first embodiment or the second embodiment, a third embodiment of the production line control method based on digital twin of the present invention is proposed. In this embodiment, referring to Figure 3The target production data includes: plate size, plate material, plate surface state, plate plane shape and total plate quantity, the total plate quantity includes the demand quantity of each plate, and the step of determining the roller demand information corresponding to different orders according to the rolling order data to obtain multiple roller demand information includes:

[0071] Step S21, determining the type of roller corresponding to each order according to the plate size, plate material, plate surface state, plate plane shape and a preset corresponding relationship corresponding to each order;

[0072] The preset corresponding relationship is generated based on historical production data, and the preset corresponding relationship is the corresponding relationship between the plate size, plate material, plate surface state, plate plane shape and the required roller type.

[0073] Step S22, determining the roller operation time demand data corresponding to each roller type in each order according to the demand quantity of the plates corresponding to the order;

[0074] The demand for the plate here is preferably the tonnage of the plate, and optionally the length of the plate. Since continuous rolling is generally performed at a fixed speed, the roller operation time demand data can be determined. In other embodiments, the roller operation time demand data can also be replaced by the following: expected rolling tonnage, expected rolling kilometers, etc.

[0075] Step S23, taking the roller type and roller operation time requirement data corresponding to the same order as roller requirement information, to obtain multiple roller requirement information.

[0076] In this embodiment, the type of roller corresponding to the order is determined by the plate size, plate material, plate surface state, plate plane shape and preset correspondence corresponding to each order, and the roller operation time requirement data corresponding to each roller type is determined by the demand quantity, so that the required rollers can be determined before the rolling process, thereby improving the accuracy of the subsequent roller replacement plan.

[0077] Further, based on any of the above embodiments, a fourth embodiment of the production line control method based on digital twin of the present invention is proposed. In this embodiment, the step of determining multiple roll changing schemes and corresponding production scheduling schemes according to the multiple roll demand information and the production line digital model includes:

[0078] Generate a plurality of production scheduling plans according to a plurality of roll demand information;

[0079] A corresponding roll changing plan is determined according to each production scheduling plan and the production line digital model.

[0080] In this embodiment, the production line digital model is simulated and run according to the production scheduling plan, and the optimal roller changing method of each production scheduling plan is determined as the roller changing plan. The optimal roller changing method here is related to the number of roller changes and the average number of rollers changed per single roller change. The smaller the number of roller changes, the better the corresponding roller changing method, and the more the average number of rollers changed per single roller change, the better the corresponding roller changing method.

[0081] Furthermore, the step of generating a plurality of production scheduling plans according to a plurality of the roll demand information comprises:

[0082] When there is the roller operation time demand data greater than or equal to the preset time threshold, the corresponding roller operation time demand data is divided into a plurality of sub-roller operation time demand data, and a plurality of the production scheduling plans are determined according to the plurality of sub-roller operation time demand data and the roller operation time demand data;

[0083] When there is no roller operation time requirement data greater than or equal to the preset time threshold, a plurality of production scheduling plans are determined according to the roller operation time requirement data.

[0084] In this embodiment, by dividing the roller operation time greater than or equal to the preset time threshold, more production scheduling plans can be generated, thereby improving the production scheduling plans with high efficiency.

[0085] Further, based on any of the above embodiments, a fifth embodiment of the production line control method based on digital twin of the present invention is proposed. In this embodiment, referring to Figure 5 The target production line is provided with an image acquisition module, the production data includes: image data, historical operation information and defect rate, and the step of obtaining the production data of the target production line includes:

[0086] Step S11, controlling the image acquisition module to acquire image data of each roller;

[0087] Step S12, recording the historical operation information of each roller;

[0088] Step S13, obtaining the defect rate of the product produced by each roller.

[0089] In this embodiment, it should be noted that the production data can also be determined based on the production data recorded at the last moment combined with the execution data. The image data is used to determine the surface condition of the roller and can effectively reflect the current state information of the roller. The historical operation information of each roller is recorded to determine the tonnage of the plate rolled by the roller. The defect rate of the product produced by each roller is obtained to determine whether the plate produced by the roller is prone to defects. The above-mentioned image data, historical operation information and defect rate are used to determine the current state of the roller. As for the standard for changing the roller, it can be pre-set by the manager of the rolling mill.

[0090] Furthermore, after the step of selecting and executing the production scheduling plan corresponding to the target roll changing plan among the multiple roll changing plans, the method further includes:

[0091] When a new order is received, the execution data of the production scheduling plan is obtained, and the digital model of the production line is updated according to the execution data, the rolling order data is updated according to the new order and the execution data, and the step of determining the roller demand information for different orders according to the rolling order data to obtain multiple roller demand information is returned to execute.

[0092] In this embodiment, the new order here refers to the order after the rolling order data is obtained, and the execution data of the production scheduling plan is obtained to determine the operation status of the current production line, and the production line digital model is updated according to the execution data, and the data corresponding to the new order is added to the rolling order data, and the corresponding data in the rolling order data is deleted according to the execution data, so as to update the rolling order data. In addition, after returning to execute the step of determining the roll demand information of different orders according to the rolling order data and obtaining multiple roll demand information, the preset plan evaluation conditions can be adjusted, and then the production arrangement can be flexibly changed according to the requirements of the new order, so as to finally update the production scheduling plan and the target roll change plan, so as to realize the real-time dynamic adjustment of the target roll change plan and the production scheduling plan, so as to improve the production efficiency of the production line while taking into account the free adjustment of the production scheduling plan and the target roll change plan.

[0093] Preferably, in the process of executing data to update the rolling order data, the orders currently in production need to be deleted from the rolling order data, even if the orders already in production have not been fully executed. This ensures that the update of the production schedule does not interrupt the operation of the production line, that is, while realizing the free adjustment of the production schedule and the target roll change plan, it can avoid the situation where the production line needs to be stopped.

[0094] In addition, an embodiment of the present invention further proposes a production line control device based on digital twins, and the production line control device based on digital twins includes:

[0095] A construction module is used to obtain production data and rolling order data of a target production line, and to construct a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller;

[0096] An analysis module, used to determine the roll demand information corresponding to different orders according to the rolling order data, and obtain multiple roll demand information;

[0097] A generating module, used for determining a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one;

[0098] The execution module is used to select and execute a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans.

[0099] Based on the same idea as the method in the above embodiment, the production line control device based on digital twin provided in this application can implement the method in the above embodiment. In addition, the production line control device based on digital twin can also include modules required to implement the above embodiment.

[0100] In addition, an embodiment of the present invention also proposes a production line control device based on digital twins, and the production line control device based on digital twins includes: a memory, a processor, and a production line control program based on digital twins stored on the memory and executable on the processor, and the production line control program based on digital twins is configured to implement the steps of an embodiment of the production line control method based on digital twins described in any one of the above items.

[0101] In addition, an embodiment of the present invention also proposes a storage medium, on which a production line control program based on digital twins is stored. When the production line control program based on digital twins is executed by a processor, the steps of the embodiment of the production line control method based on digital twins described in any one of the above are implemented.

[0102] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0103] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0104] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0105] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A production line control method based on digital twin, characterized in that: The production line control method based on digital twins includes the following steps: Acquire production data and rolling order data of a target production line, and construct a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller; Determine the roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information; Determine a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one; Select and execute a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans; The step of determining a plurality of roll replacement schemes and corresponding production scheduling schemes according to the plurality of roll demand information and the production line digital model comprises: Generate multiple production scheduling plans according to multiple roll demand information; Determine a corresponding roll changing plan according to each of the production scheduling plans and the production line digital model; The roll demand information includes: roll type and corresponding roll running time demand data; The step of generating a plurality of production scheduling plans according to a plurality of roll demand information comprises: When there is the roller operation time demand data greater than or equal to the preset time threshold, the corresponding roller operation time demand data is divided into a plurality of sub-roller operation time demand data, and a plurality of the production scheduling plans are determined according to the plurality of sub-roller operation time demand data and the roller operation time demand data; When there is no roller operation time requirement data greater than or equal to the preset time threshold, a plurality of production scheduling plans are determined according to the roller operation time requirement data.

2. The production line control method based on digital twin according to claim 1, characterized in that: The step of selecting and executing a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans comprises: Obtain the preset scheme evaluation conditions; When the preset scheme evaluation condition is the first evaluation condition, the number of roll changes of each roll change scheme and the average number of roll changes in a single roll change are calculated, and a target roll change scheme is determined according to the number of roll changes and the number of roll changes; Execute the production scheduling plan corresponding to the target roll changing plan.

3. The production line control method based on digital twin according to claim 1, characterized in that: The target production data includes: plate size, plate material, plate surface state, plate plane shape and total plate quantity, the total plate quantity includes the demand quantity of each plate, and the step of determining the roller demand information corresponding to different orders according to the rolling order data to obtain multiple roller demand information includes: Determine the type of roller corresponding to each order according to the plate size, plate material, plate surface state, plate plane shape and preset corresponding relationship corresponding to each order; Determine the roller operation time demand data corresponding to each roller type in each order according to the demand quantity of the plates corresponding to the order; The roller type and roller operation time requirement data corresponding to the same order are used as roller requirement information to obtain multiple roller requirement information.

4. The production line control method based on digital twin according to any one of claims 1 to 3, characterized in that: The target production line is provided with an image acquisition module, the production data includes: image data, historical operation information and defect rate, and the step of obtaining the production data of the target production line includes: Controlling the image acquisition module to acquire image data of each roller; Recording the historical operation information of each roller; Obtain the defect rate of products produced by each roll.

5. The production line control method based on digital twin according to any one of claims 1 to 3, characterized in that: After the step of selecting and executing the production scheduling plan corresponding to the target roll changing plan among the multiple roll changing plans, the method further includes: When a new order is received, the execution data of the production scheduling plan is obtained, and the digital model of the production line is updated according to the execution data, the rolling order data is updated according to the new order and the execution data, and the step of determining the roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information is returned to execute.

6. A production line control device based on digital twin, characterized in that: The production line control device based on digital twin includes: A construction module is used to obtain production data and rolling order data of a target production line, and to construct a production line digital model of the target production line according to the production data, wherein the rolling order data includes target production data corresponding to different plates, and the production line digital model includes: status information of each rolling roller; The analysis module is used to determine the roll demand information corresponding to different orders according to the rolling order data to obtain multiple roll demand information. The step of determining multiple roll replacement plans and corresponding production scheduling plans according to the multiple roll demand information and the production line digital model includes: Generate a plurality of production scheduling plans according to a plurality of roll demand information; Determine a corresponding roll changing plan according to each of the production scheduling plans and the production line digital model; The roll demand information includes: roll type and corresponding roll running time demand data; The step of generating a plurality of production scheduling plans according to a plurality of roll demand information comprises: When there is the roller operation time demand data greater than or equal to the preset time threshold, the corresponding roller operation time demand data is divided into a plurality of sub-roller operation time demand data, and a plurality of the production scheduling plans are determined according to the plurality of sub-roller operation time demand data and the roller operation time demand data; When there is no roller operation time requirement data greater than or equal to the preset time threshold, determining a plurality of production scheduling plans according to the roller operation time requirement data; A generating module, used for determining a plurality of production scheduling plans and corresponding roll changing plans according to the plurality of roll demand information and the production line digital model, wherein the production scheduling plans and the roll changing plans correspond to each other one by one; The execution module is used to select and execute a production scheduling plan corresponding to a target roll changing plan among multiple roll changing plans.

7. A production line control device based on digital twin, characterized in that: The digital twin-based production line control device includes: a memory, a processor, and a digital twin-based production line control program stored in the memory and executable on the processor, wherein the digital twin-based production line control program is configured to implement the steps of the digital twin-based production line control method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that: The storage medium stores a production line control program based on digital twins, and when the production line control program based on digital twins is executed by the processor, the steps of the production line control method based on digital twins as described in any one of claims 1 to 5 are implemented.

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