A method, system and apparatus for process control of manufacturing processes

Abstract

The application discloses a kind of manufacturing process process control method, system and device, it is related to process control field, comprising: according to product demand to determine the production procedure corresponding to product and the unit under production procedure;Current unit under production procedure is sequentially regarded as current unit according to the order of production procedure, and current unit is controlled to carry out production according to corresponding process control item standard.If the process control item of current unit does not comply with process control item standard in the process of unit production, and current is not the last production procedure, timely adjust the process control item standard of the unit of next production procedure, reduce the problem of final product due to adjustment lag or process not found in time to comply with standard.It does not need artificial calculation, reduce the waste of human resources, and improve the calculation efficiency.If the unit of next procedure can not be adjusted process, the material produced by current unit is withdrawn from production line, timely stop loss, and improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of process control, and in particular to a method, system and apparatus for process control in manufacturing processes. Background Technology

[0002] The current manufacturing process for steel products in steel enterprises involves pre-setting production paths and corresponding key process control standards for each node in the production path based on the product attributes, performance, and other special requirements specified in the order, combined with metallurgical manufacturing standards. These nodes are then the various production units, and production units execute the plans. Because product quality is greatly affected by process organization and is constrained by pre-production preparation, process control in each stage, and unit scheduling, if the process is not fully controlled online or the controlled key processes in the current process do not meet requirements, two situations can occur: First, improper online process control prevents problems from being exposed, risking a gradual deviation from product quality targets and ultimately leading to substandard product quality. Post-production analysis and improvement through manual intervention is extremely labor-intensive. Second, improper control of controlled key processes can render subsequently set production paths and corresponding key process control requirements ineffective. Without corrective measures, production of the target product cannot continue. The production process involves a lot of manual intervention, which results in low efficiency and low accuracy. Furthermore, the process standards are not linked to the production process and management control is not achieved. The process data needs to be collected and evaluated manually, which can easily lead to errors in process judgment and thus result in low yield. Summary of the Invention

[0003] The purpose of this invention is to provide a method, system, and apparatus for process control in manufacturing, reducing losses and increasing yield. The entire process requires no manual calculations, reducing waste of human resources and improving computational efficiency.

[0004] To address the aforementioned technical problems, this invention provides a method for process control in manufacturing, comprising:

[0005] The production process corresponding to the product and the unit under the production process are determined according to the product requirements, and the product corresponds to a unique unit under each production process.

[0006] The units under the current production process are sequentially designated as current units according to the order of the production process, and the current units are controlled to produce according to the process control item standards corresponding to the current units.

[0007] If the production process corresponding to the current unit is not the last production process, then it is determined whether the process control items of the current unit meet the process control item standards. The process control items include the parameters produced by the unit.

[0008] If the process control item standard is not met, then it is determined whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit.

[0009] If process adjustments are possible, the process control standards for the next production process unit are adjusted, and when the current unit finishes production, the next production process unit is taken as the current unit, and the process returns to the step of controlling the current unit to produce according to the process control standards corresponding to the current unit.

[0010] If process adjustments cannot be made, the materials currently produced by the unit will be removed from the production line.

[0011] On the other hand, before determining the corresponding production process and the unit under the production process based on product demand, the process also includes:

[0012] Determine the identifiers and names of the production processes in the production line;

[0013] Determine the identifier and name of each unit under each of the aforementioned production processes;

[0014] Each production path and the production path cluster consisting of all production paths are determined according to the identifier and name of the production process and the identifier and name of the unit. Each production process under each production path includes only one unit.

[0015] Based on product requirements, determine the corresponding production process for the product and the equipment units under the production process, including:

[0016] Select a production path from the production path cluster based on product requirements.

[0017] On the other hand, selecting a production path from the production path cluster based on product requirements includes:

[0018] Based on product requirements, determine the range of export specifications for materials produced by the units in each production process, in order from the last production process to the first production process.

[0019] Select a production path from the production path cluster based on the export specification range.

[0020] On the other hand, before determining whether the current unit's process control items meet the unit's process control item standards, the following steps are also included:

[0021] Determine the names and identifiers of the process control items for each unit;

[0022] An upper limit and a lower limit are set for each process control item, and the range formed by the upper and lower limits is the standard of the process control item.

[0023] Determining whether the current unit's process control items meet the unit's process control item standards includes:

[0024] Determine whether the value of the current unit's process control item is within the range defined by the upper and lower limits.

[0025] On the other hand, before determining whether the current unit's process control items meet the unit's process control item standards, the following steps are also included:

[0026] All process control items of all units are divided into process control items that directly affect the final result and process control items that do not directly affect the final result;

[0027] Determining whether the current unit's process control items meet the unit's process control item standards includes:

[0028] If any process control item that directly affects the final result does not meet the process control item standard for the final result, then it is determined that the process control item of the current unit does not meet the process control item standard of the unit.

[0029] On the other hand, after determining whether the current unit's process control items meet the unit's process control item standards, the process control also includes:

[0030] If the process control criteria are met, the unit in the next production process corresponding to the unit currently in production will be designated as the current production unit. When the current unit finishes production, the unit in the next production process will be designated as the current unit, and the process will return to the step of controlling the current unit to produce according to the process control criteria corresponding to the current unit.

[0031] On the other hand, determining whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit includes:

[0032] Determine whether the material output from the current unit matches the standard of the input material from the unit in the next production process;

[0033] If the input material of the next production process unit matches the standard, then it is determined that the next production process unit can make process adjustments to the material output by the current unit.

[0034] If the input material standard of the unit in the next production process does not match, it is determined that the unit in the next production process cannot make process adjustments to the material output by the current unit.

[0035] On the other hand, after determining that the unit in the next production process cannot make process adjustments to the material output by the current unit, the process also includes:

[0036] Determine whether the material output by the current unit matches the standard of the input material of other units in the next production process;

[0037] If the input material standards match those of other units, then the other units are designated as the current unit, and the process of controlling the current unit to produce according to the corresponding process control item standards is returned.

[0038] If the input material standards of other units do not match, then determine whether the process control items of the current unit's preceding production process match the process control item standards of the preceding production process corresponding to the product requirements.

[0039] If the product matches the standard of the materials in the preceding production process, then the product will be used as the product for other production needs.

[0040] If the material produced by the current unit does not match the standard of the material produced in the preceding production process, the material produced by the current unit will be removed from the production line.

[0041] To address the aforementioned technical problems, the present invention also provides a system for manufacturing process control, comprising:

[0042] The demand determination unit is used to determine the production process corresponding to the product and the unit under the production process according to the product demand, wherein the product corresponds to a unique unit under each production process.

[0043] A production unit is used to sequentially designate the units under the current production process as the current units according to the order of the production process, and to control the current units to produce according to the process control item standards corresponding to the current units.

[0044] The standard judgment unit is used to determine whether the process control items of the current unit meet the process control item standard if the production process corresponding to the current unit is not the last production process. The process control items include the parameters of the unit's production. If not, the process adjustment judgment unit is triggered.

[0045] The process adjustment judgment unit is used to determine whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit; if yes, the process adjustment unit is triggered; if no, the exit unit is triggered.

[0046] The process adjustment unit is used to adjust the process control item standards of the unit in the next production process, and to take the unit in the next production process as the current unit when the current unit finishes production, and trigger the production unit.

[0047] The exit unit is used to remove the material produced by the current unit from the production line.

[0048] To address the aforementioned technical problems, the present invention also provides a device for process control in manufacturing, comprising:

[0049] Memory, used to store computer programs;

[0050] A processor is used to execute the computer program to implement the steps of the above-described method for controlling the manufacturing process.

[0051] This application provides a method, system, and apparatus for process control in manufacturing, relating to the field of process control. The method includes: determining the production process and the units under the production process based on product requirements; sequentially designating the units under the current production process as the current units according to the order of the production processes, and controlling the current units to produce according to the corresponding process control standards. If the process control items of the current unit do not meet the process control standards during the unit's production process, and the current process is not the last production process, the process control standards of the next production process unit are adjusted promptly, reducing problems with the final product caused by delayed adjustments or failure to detect non-compliance with standards in a timely manner. No manual calculation is required, reducing waste of human resources and improving calculation efficiency. If the next process unit cannot be adjusted, the materials produced by the current unit are removed from the production line to stop losses in a timely manner and improve production efficiency. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A flowchart of a manufacturing process control method provided by the present invention;

[0054] Figure 2 A schematic diagram of the structure of a manufacturing process control system provided by the present invention;

[0055] Figure 3 This is a schematic diagram of a device for controlling the manufacturing process provided by the present invention. Detailed Implementation

[0056] The core of this invention is to provide a method, system, and apparatus for process control in manufacturing, reducing losses and increasing yield. The entire process requires no manual calculations, reducing waste of human resources and improving computational efficiency.

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Figure 1 A flowchart of a manufacturing process control method provided by the present invention includes:

[0059] S11: Determine the production process and the unit under the production process according to the product requirements. Each product corresponds to a unique unit under each production process.

[0060] The subsequent production stages in the production process are called production processes. For example, a steelmaking unit includes desulfurization, vanadium extraction, and converter processes. Each production process has multiple production units; for example, the vanadium extraction process includes Vanadium Extraction Unit 1 and Vanadium Extraction Unit 2. The properties of the materials produced by each unit may differ, so after determining the product requirements, a unit matching the product requirements is selected for each production process.

[0061] S12: Select the units under the current production process as the current units in the order of the production process, and control the current units to produce according to the corresponding process control item standards;

[0062] Considering that the production process has a corresponding sequence, the units of the first production process, the second production process, and so on, up to the last production process, are controlled in sequence as the current unit. After the current unit finishes production, the unit of the next production process is controlled as the current unit to carry out the next process, thereby producing the products required by the product demand.

[0063] S13: If the production process corresponding to the current unit is not the last production process, then determine whether the process control items of the current unit meet the process control item standards. The process control items include the parameters of the unit's production. If not, proceed to step S14.

[0064] During production, it is crucial to determine whether process control items comply with the unit's process control standards. If they do not, it indicates that the materials produced by the unit may not meet the standards, ultimately leading to products that do not meet product requirements. Therefore, it is necessary to monitor whether process control items comply with the process control standards.

[0065] S14: Determine whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit; if yes, proceed to step S15; otherwise, proceed to step S16.

[0066] S15: Adjust the process control standards of the unit in the next production process, and when the current unit finishes production, set the unit in the next production process as the current unit, and return to step S12;

[0067] Considering that adjustments can be made in subsequent units after a failure in the current unit, minimizing the impact of the current unit's problem on subsequent products, it's necessary to determine whether this is the last production process before making adjustments using subsequent units. If it's not the last production process, it indicates the existence of subsequent units and room for adjustment. The process control items of the next production unit can be adjusted to balance the problem in the current process.

[0068] S16: Remove the material currently produced by the unit from the production line.

[0069] If a malfunction occurs in the current process and there are no subsequent processes to adjust the current material, the material should be removed from the production line in a timely manner to minimize losses.

[0070] This application provides a method for process control in manufacturing, relating to the field of process control, including: determining the production process and the units under the production process according to product requirements; sequentially designating the units under the current production process as the current units according to the order of the production processes, and controlling the current units to produce according to the corresponding process control item standards. During the unit's production process, if the process control items of the current unit do not meet the process control item standards, and the current process is not the last production process, the process control item standards of the next production process unit are adjusted in a timely manner, reducing problems in the final product caused by delayed adjustments or failure to detect non-compliance with standards in a timely manner. No manual calculation is required, reducing the waste of human resources and improving calculation efficiency. If the next process unit cannot be adjusted, the materials produced by the current unit are removed from the production line to stop losses in a timely manner and improve production efficiency.

[0071] Based on the above embodiments:

[0072] In some embodiments, before determining the production process corresponding to the product and the unit under the production process based on product requirements, the method further includes:

[0073] Determine the identifiers and names of the production processes in the production line;

[0074] Determine the identification and name of each unit under each production process;

[0075] Each production path and the production path cluster consisting of all production paths are determined based on the identification and name of the production process and the identification and name of the unit. Each production process under each production path includes only one unit.

[0076] Based on product requirements, determine the corresponding production processes and the units within those processes, including:

[0077] Select a production path from the production path cluster based on product requirements.

[0078] A production process represents each production stage within a production unit; a unit represents equipment with similar production characteristics within a process; and a production path represents the production processes and units that a product sequentially passes through during production. Through the code definition of production processes and units, a unique path for the entire manufacturing process is represented. For example, slab production involves the steelmaking processes of Desulfurization Unit 1, Converter Unit 2, and Continuous Casting Unit 1. A production path cluster represents the set of all possible production paths for a product.

[0079] In some embodiments, selecting a production path from a cluster of production paths based on product requirements includes:

[0080] Based on product requirements, determine the range of export specifications for materials produced by the units in each production process, in order from the last production process to the first production process.

[0081] Select a production path from the production path cluster based on the export specification range.

[0082] Using the final product as the root node, information on all processes and units involved in producing that product is linked together throughout the entire process to establish a complete production path cluster for the product. Based on the quality requirements of the final product and the principle of similar quality attributes, a label is set for each material (intermediate product) produced by each unit, forming a material label cluster for that unit.

[0083] In some embodiments, before determining whether the current unit's process control items meet the unit's process control item standards, the method further includes:

[0084] Determine the names and identifiers of the process control items for each unit;

[0085] Set upper and lower limits for each process control item; the range formed by the upper and lower limits is the process control item standard.

[0086] Determine whether the current process control items of the unit comply with the unit's process control item standards, including:

[0087] Determine whether the values ​​of the current unit's process control items are within the range defined by the upper and lower limits.

[0088] Specifically, the production processes and the process control items within each production process include, but are not limited to, the following:

[0089] Steelmaking:

[0090] Desulfurization process: post-desulfurization temperature, slag removal standards, and slag removal time requirements;

[0091] Vanadium extraction process: C of the vanadium-extracted semi-steel, temperature of the vanadium-extracted semi-steel;

[0092] Continuous casting process: light reduction benchmark, finished product composition C, tundish temperature;

[0093] Hot-rolled:

[0094] Heating process: soaking temperature, second-stage heating temperature;

[0095] Rolling process: pressure measurement, rolling strategy;

[0096] Winding: Slow cooling time;

[0097] Cold rolling:

[0098] Pickling process: acid concentration, rinsing water temperature;

[0099] Continuous annealing process: pressure of the squeeze rollers and tension of the preheating section.

[0100] For example, if the process control item is temperature, the upper and lower limits of the temperature are preset. If the temperature is within the range of the upper and lower limits, it proves that the process control item of the current unit meets the process control item standard.

[0101] In some embodiments, before determining whether the current unit's process control items meet the unit's process control item standards, the method further includes:

[0102] All process control items of all units are divided into process control items that directly affect the final result and process control items that do not directly affect the final result;

[0103] Determine whether the current process control items of the unit comply with the unit's process control item standards, including:

[0104] If there are process control items that directly affect the final result and do not meet the process control item standards for the final result, then it is determined that the process control items of the current unit do not meet the process control item standards for the unit.

[0105] Based on previous experience, the importance of process control items is determined, specifically divided into critical and non-critical. Critical process control items are those that directly affect the final result, and their evaluation results serve as the basis for process judgment; that is, if any one of them fails, the process is deemed unqualified. Non-critical process control items are those that do not directly affect the final result, and their output materials can be corrected through subsequent adjustments to the unit.

[0106] If a process control item that directly affects the final result does not meet the process control item standard, then the process control item of the current unit is directly determined to be non-compliant. For process control items that do not directly affect the final result, the compliance of the process control item of the current unit with the process control item standard can be determined based on the experience of the actual technical personnel.

[0107] In some embodiments, after determining whether the current unit's process control items meet the unit's process control item standards, the method further includes:

[0108] If the process control item standards are met, the unit in the next production process corresponding to the unit currently producing will be taken as the current production unit. When the current unit finishes production, the unit in the next production process will be taken as the current unit, and the process will return to the steps of controlling the current unit to produce according to the process control item standards corresponding to the current unit.

[0109] If the process control items of the current unit meet the process control item standards, then the unit that controls the next production process after the current unit finishes production will be designated as the current unit and continue the subsequent production. If the current unit is the last production process, then the entire production process of the product is considered complete and the output product meets the user's needs.

[0110] In some embodiments, determining whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit includes:

[0111] Determine whether the material output from the current unit matches the standard of the input material for the next production process unit;

[0112] If the input material of the next production unit matches the standard, then the next production unit is deemed to be able to make process adjustments to the material output by the current unit.

[0113] If the input material standard of the unit in the next production process does not match, it is determined that the unit in the next production process cannot make process adjustments to the output material of the current unit.

[0114] When a process fails to meet the requirements, the current material tag is parsed, and subsequent processes are dynamically adjusted. Based on the material's actual attributes, other tags in the material tag cluster in the current path are automatically matched. If a match is successful, production is automatically switched to the subsequent process corresponding to that tag.

[0115] Specifically, for example, there are A1 and A2 units for process A, and B1 and B2 units for process B, with the production path being A1 unit and B1 unit.

[0116] If the product output from unit A1 does not meet the process control standards, unit B1 should be adjusted first to determine whether it can receive the material output from unit A1. If unit B1 can be matched with the material output from unit A1 after adjustment, production can continue according to the current production path.

[0117] If unit B1 cannot receive materials output from unit A1 after adjustment, try adjusting the process control items of unit B2. If unit B2 can match the materials output from unit A1 after adjustment, then switch process B in the production path to unit B2 to carry out subsequent production.

[0118] In some embodiments, after determining that the unit in the next production process cannot make process adjustments to the material output by the current unit, the method further includes:

[0119] Determine whether the material output by the current unit matches the standard of the input material of other units in the next production process;

[0120] If the input material standards match those of other units, then the other units will be used as the current unit, and the steps to control the current unit to produce according to the corresponding process control item standards will be returned.

[0121] If the input material standards of other units do not match, then determine whether the process control items of the current unit's preceding production process match the process control item standards of the preceding production process corresponding to the product requirements.

[0122] If the product matches the material standards of the unit in the preceding production process, then the product will be used as the product for other production needs.

[0123] If the material produced by the current unit does not match the standard of the material produced in the previous production process, the material produced by the current unit will be removed from the production line.

[0124] If none of the units in process B can receive the material output from unit A1, then it is determined whether other processes require the material output from unit A1, i.e., whether it matches the material standards of the units in the preceding production processes. If the match is successful, it means that the material that is currently unqualified by the process meets the needs of other contract production, and thus intelligent transfer is executed; if the match fails, the material becomes surplus material.

[0125] Figure 2 This is a schematic diagram of a manufacturing process control system provided by the present invention. The manufacturing process control system includes:

[0126] Demand determination unit 21 is used to determine the production process and the unit under the production process according to the product demand. The product corresponds to a unique unit under each production process.

[0127] Production unit 22 is used to sequentially designate the units under the current production process as the current units according to the order of the production process, and control the current units to produce according to the corresponding process control item standards;

[0128] The standard judgment unit 23 is used to determine whether the process control items of the current unit meet the process control item standard if the production process corresponding to the current unit is not the last production process. The process control items include the parameters of the unit's production. If not, the process adjustment judgment unit 24 is triggered.

[0129] The process adjustment judgment unit 24 is used to determine whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit; if yes, the process adjustment unit 25 is triggered; if no, the exit unit 26 is triggered.

[0130] The process adjustment unit 25 is used to adjust the process control item standards of the unit in the next production process, and to set the unit in the next production process as the current unit when the current unit finishes production, thus triggering the production unit 22.

[0131] Exit unit 26 is used to remove the material produced by the current unit from the production line.

[0132] Based on the above embodiments, it also includes:

[0133] The production process determination unit is used to determine the identifier and name of the production process in the production line;

[0134] The unit identification unit is used to identify and name each unit under each production process.

[0135] The production path cluster determination unit is used to determine each production path and the production path cluster consisting of all production paths based on the identification and name of the production process and the identification and name of the unit. Each production process under each production path includes only one unit.

[0136] The demand determination unit 21 is specifically used to select a production path from the production path cluster based on product demand.

[0137] The export specification range determination unit is used to determine the export specification range of materials produced by the units in each production process according to product requirements, in the order from the last production process to the first production process.

[0138] The demand determination unit 21 is specifically used to select a production path from the production path cluster based on the export specification range.

[0139] The process control item standard determination unit is used to determine the name and identifier of the process control item standard for each unit.

[0140] The range setting unit is used to set upper and lower limits for each process control item. The range formed by the upper and lower limits is the process control item standard.

[0141] The standard judgment unit 23 is specifically used to determine whether the value of the current unit's process control item is within the range formed by the upper and lower limits.

[0142] The process control item division unit is used to divide all process control items of all units into process control items that directly affect the final result and process control items that do not directly affect the final result.

[0143] The non-compliance determination unit is used to determine that the process control item of the current unit does not meet the process control item standard if there is a process control item that directly affects the final result and does not meet the process control item standard of the final result.

[0144] The second process sequence judgment unit is used to determine the current production unit if the process control item standard is met, and to determine the next production process unit corresponding to the current production unit as the current production unit. When the current production unit finishes production, the next production process unit is determined as the current production unit, and the production unit 22 is triggered.

[0145] The first matching judgment unit is used to determine whether the material output by the current unit matches the standard of the input material of the next production process unit; if yes, the matching judgment unit is triggered; if no, the non-matching judgment unit is triggered.

[0146] The matching and determination unit is used to determine whether the next production unit can make process adjustments to the material output by the current unit.

[0147] The mismatch determination unit is used to determine whether the next production unit can make process adjustments to the material output by the current unit.

[0148] The second matching judgment unit is used to determine whether the process control items of the previous production process of the current unit match the process control item standards of the previous production process corresponding to the product requirements if the input materials of other units do not match the standards of other units. If they do match, the first adjustment unit is triggered; if not, the third matching judgment unit is triggered.

[0149] The first adjustment unit is used to set other units as the current unit and trigger production unit 22;

[0150] The third matching judgment unit is used to determine whether the material output by the current unit matches the standard of the material of the unit in the previous production process; if yes, the second adjustment unit is triggered; if no, the exit unit is triggered.

[0151] The second adjustment unit is used to treat the product as a product for other production needs.

[0152] Figure 3 This is a schematic diagram of a manufacturing process control device provided by the present invention. The manufacturing process control device includes:

[0153] Memory 31 is used to store computer programs;

[0154] Processor 32, for executing computer programs, implements steps of manufacturing process control methods.

[0155] The description of the manufacturing process control device provided in this application is similar to that in the above embodiments and will not be repeated here.

[0156] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0157] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0158] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for process control in manufacturing, characterized in that, include: The production process corresponding to the product and the unit under the production process are determined according to the product requirements, and the product corresponds to a unique unit under each production process. The units under the current production process are sequentially designated as current units according to the order of the production process, and the current units are controlled to produce according to the process control item standards corresponding to the current units. If the production process corresponding to the current unit is not the last production process, then it is determined whether the process control items of the current unit meet the process control item standards. The process control items include the parameters produced by the unit. If the process control item standard is not met, then it is determined whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit. If process adjustments are possible, the process control standards for the next production process unit are adjusted, and when the current unit finishes production, the next production process unit is taken as the current unit, and the process returns to the step of controlling the current unit to produce according to the process control standards corresponding to the current unit. If process adjustments cannot be made, the material currently produced by the unit will be removed from the production line. Determining whether the next production unit corresponding to the current unit can make process adjustments to the material output by the current unit includes: Determine whether the material output from the current unit matches the standard of the input material from the unit in the next production process; If the input material of the next production process unit matches the standard, then it is determined that the next production process unit can make process adjustments to the material output by the current unit. If the input material of the next production process unit does not match the standard, it is determined that the next production process unit cannot make process adjustments to the material output by the current unit. After determining that the next production unit cannot make process adjustments to the material output by the current unit, the process further includes: Determine whether the material output by the current unit matches the standard of the input material of other units in the next production process; If the input material standards match those of other units, then the other units are designated as the current unit, and the process of controlling the current unit to produce according to the corresponding process control item standards is returned. If the input material standards of other units do not match, then determine whether the process control items of the current unit's preceding production process match the process control item standards of the preceding production process corresponding to the product requirements. If the product matches the standard of the materials in the preceding production process, then the product will be used as the product for other production needs. If the material produced by the current unit does not match the standard of the material produced in the preceding production process, the material produced by the current unit will be removed from the production line.

2. The method for process control in manufacturing as described in claim 1, characterized in that, Before determining the corresponding production process and the units under the production process based on product requirements, the following steps are also included: Determine the identifiers and names of the production processes in the production line; Determine the identifier and name of each unit under each of the aforementioned production processes; Each production path and the production path cluster consisting of all production paths are determined according to the identifier and name of the production process and the identifier and name of the unit. Each production process under each production path includes only one unit. Based on product requirements, determine the corresponding production process for the product and the equipment units under the production process, including: Select a production path from the production path cluster based on product requirements.

3. The method for process control in manufacturing as described in claim 2, characterized in that, Based on product requirements, a production path is selected from the production path cluster, including: Based on product requirements, determine the range of export specifications for materials produced by the units in each production process, in order from the last production process to the first production process. Select a production path from the production path cluster based on the export specification range.

4. The method for process control in manufacturing as described in claim 1, characterized in that, Before determining whether the current unit's process control items meet the unit's process control item standards, the following steps are also included: Determine the names and identifiers of the process control items for each unit; An upper limit and a lower limit are set for each process control item, and the range formed by the upper and lower limits is the standard of the process control item. Determining whether the current unit's process control items meet the unit's process control item standards includes: Determine whether the value of the current unit's process control item is within the range defined by the upper and lower limits.

5. The method for process control in manufacturing as described in claim 1, characterized in that, Before determining whether the current unit's process control items meet the unit's process control item standards, the following steps are also included: All process control items of all units are divided into process control items that directly affect the final result and process control items that do not directly affect the final result; Determining whether the current unit's process control items meet the unit's process control item standards includes: If any process control item that directly affects the final result does not meet the process control item standard for the final result, then it is determined that the process control item of the current unit does not meet the process control item standard of the unit.

6. The method for process control in manufacturing as described in claim 1, characterized in that, After determining whether the current unit's process control items meet the unit's process control item standards, the process control process also includes: If the process control criteria are met, the unit in the next production process corresponding to the unit currently in production will be designated as the current production unit. When the current unit finishes production, the unit in the next production process will be designated as the current unit, and the process will return to the step of controlling the current unit to produce according to the process control criteria corresponding to the current unit.

7. A system for process control in manufacturing, characterized in that, include: The demand determination unit is used to determine the production process corresponding to the product and the unit under the production process according to the product demand, wherein the product corresponds to a unique unit under each production process. A production unit is used to sequentially designate the units under the current production process as the current units according to the order of the production process, and to control the current units to produce according to the process control item standards corresponding to the current units. The standard judgment unit is used to determine whether the process control items of the current unit meet the process control item standard if the production process corresponding to the current unit is not the last production process. The process control items include the parameters of the unit's production. If not, the process adjustment judgment unit is triggered. The process adjustment judgment unit is used to determine whether the next production process unit corresponding to the current unit can make process adjustments to the material output by the current unit; if yes, the process adjustment unit is triggered; if no, the exit unit is triggered. The process adjustment unit is used to adjust the process control item standards of the unit in the next production process, and to take the unit in the next production process as the current unit when the current unit finishes production, and trigger the production unit. The exit unit is used to remove the material currently produced by the unit from the production line; The first matching judgment unit is used to determine whether the material output by the current unit matches the standard of the input material of the unit in the next production process; if yes, the matching judgment unit is triggered; if no, the non-matching judgment unit is triggered. The matching determination unit is used to determine whether the unit of the next production process can make process adjustments to the material output by the current unit; The mismatch determination unit is used to determine that the unit of the next production process cannot make process adjustments to the material output by the current unit; The second matching judgment unit is used to determine whether the material output by the current unit matches the standard of the input material of other units in the next production process; if yes, the first adjustment unit is triggered; if no, the third matching judgment unit is triggered. The first adjustment unit is used to designate other units as the current unit and trigger the production unit; The third matching judgment unit is used to determine whether the process control items of the previous production process of the current unit match the process control item standards of the previous production process corresponding to other product requirements; if yes, the second adjustment unit is triggered; if no, the exit unit is triggered. The second adjustment unit is used to adjust the product as a product for other production needs.

8. A device for process control in manufacturing, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the manufacturing process control method as described in any one of claims 1 to 6.

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