Intelligent control and decision-making system and method for smart factory

Abstract

The invention discloses an intelligent control and decision-making system and method for a smart factory, and relates to the technical field of smart factory decision-making, and the system comprises a function area marking unit which is configured to receive an input work order and carry out function area marking processing so as to form a function area marking list; the functional area distribution unit is configured to receive an input work order to carry out transfer path analysis to obtain a functional area distribution list, and the decision-making unit is configured to receive the functional area distribution list to carry out comparison operation with the functional area marking list, confirm that the same functional area does not have the same working procedure, and then feed back the same working procedure to the administrator node. According to the invention, on the basis of the smart factory, an intelligent decision-making mode is adopted, a command decision-making platform is established based on the input work order, the utilization rate of the material resource transfer device between different functional areas in the smart factory is realized, the retention time of materials in the production process can be shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of smart factory decision-making technology, and specifically to an intelligent control and decision-making system and method for a smart factory. Background Art

[0002] Smart factory is the core component of Industry 4.0, representing the advanced model of manufacturing industry's transformation to digitalization, networking and intelligence. It generally connects the equipment, tools and products in the factory through the Internet of Things technology to achieve real-time data collection and communication. Collect massive production data and use big data analysis technology for in-depth mining and processing. Through analysis, further optimize the production process, predict equipment failures and improve product quality. In the current smart factory, although a large number of automated equipment and robots are also used to improve efficiency, due to the unitized model, the material data produced between units is not coordinated enough in time and not convenient enough in transportation, resulting in a large amount of irresistible losses in the production process. Therefore, in the current control decision-making of smart factories, how to reduce unnecessary packaging and transportation links, reduce material transportation losses and transportation resource costs is one of the problems that need to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a smart factory intelligent control and decision-making system and method to solve the problems raised in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a smart factory intelligent control and decision-making system, the system comprising: a function area marking unit configured to receive an input work order and perform function area marking processing to form a function area marking list; a functional area allocation unit, configured to receive an input work order, perform a transfer path analysis, and obtain a functional area allocation list, wherein the transfer path includes a transfer distance of the material between functional areas, a time the material stays on the transfer device, and a weight of the material; A decision unit is configured to receive the function area allocation list to perform a comparison operation with the function area marking list, and after confirming that the same process does not exist in the same function area, feedback is given to the administrator node.

[0005] According to the above technical solution, the functional area marking process includes marking according to the comparison between the functional area area and the area required for the process, wherein, if the area required for the process of any work order in the input work order list is larger than the area of ​​a certain functional area, the process is marked on a certain functional area, and each process is marked only once to form a functional area marking list for a certain functional area.

[0006] According to the above technical solution, the transport path analysis includes a first transport path analysis, a second transport path analysis and a third transport path analysis; Among them, the first transfer path analysis seeks the optimal solution based on the transfer distance of materials between functional areas to form the first functional area allocation decision; the second transfer path analysis is based on the length of time the material stays on the transfer device, and forms the second functional area allocation decision based on the first functional area allocation decision; the third transfer path analysis is based on the material weight, and forms the third functional area allocation decision based on the second functional area allocation decision.

[0007] According to the above technical solution, the first functional area allocation decision includes: The functional area list in the smart factory is modeled, and the sum of the distances from any functional area to all other functional areas is calculated. A functional area distance list is formed in ascending order. The association relationship between the processes in the input work order is extracted based on the input work order, where the association relationship refers to the existence of material transportation between two processes. Based on the association relationship between the processes, the process with the largest number of association relationships is selected for functional area selection to form the first functional area allocation decision, which specifically includes: selecting according to the functional area distance list, if the process is marked in the functional area mark list of the selected functional area, continue to select downward until the process and the functional area match is satisfied, and mark the process as the first process.

[0008] According to the above technical solution, the second functional area allocation decision includes: Based on the first functional area allocation decision, the first process and the functional area where the first process is located are determined. Based on the input work order, the start time and material requirement data of all processes are obtained. Based on the functional area where the first process is located, the materials produced by the first process are transported to other functional areas. The transport data formed includes: Set the start time list to , They refer to the start time of production of other processes except the first process, arranged in order from small to large, and recorded at zero o'clock on the date of the start time of production. Represents the number of processes other than the first process; the material data produced by the first process to form the demand of each process in the corresponding time list, if there is no association with the first process, it is recorded as 0 to form a demand list , They refer to the material data produced by the first process that are required by other processes except the first process; Set the data of production materials per unit time of the first process as , then for any process i except the first process, calculate the time the material stays on the transfer device:

[0009] in, Represents the time that the material stays on the transfer device for any process i. If it is less than 0, the time the material stays on the transfer device is also considered to be 0; Represents the value data of any process i in the time list; Represents the value data of any process i in the requirement list; Represents the value of the integer; Represents the production demand deadline of the previous process of any process i. When i is equal to 1, Equal to the start time of production of the first process; Represents a unit of time; The length of time that the materials of each process stay on the transfer device is calculated as the output of the second functional area allocation decision.

[0010] According to the above technical solution, the third functional area allocation decision includes: Based on the requirements list Get the material weight, which is recorded as a list ,in, They represent the weight of the material data produced by the first process required by other processes except the first process; Obtain the transfer distance between other functional areas and the functional area where the first process is located, and establish the decision function relationship as follows:

[0011] in, represents the value of the decision function under the j-th decision; , They represent the resource loss coefficient per unit time staying on the transfer device under unit weight and the transportation loss coefficient per unit distance under unit weight respectively; Represents the distance between the functional area where process i is located under the j-th decision and the functional area where the first process is located.

[0012] According to the above technical solution, the decision in the decision function includes: Randomly assign each process to other functional areas except the functional area corresponding to the first process; and performing sequential calculations according to the decision execution table, wherein, based on the calculated sum of distances between other functional areas under each decision and the functional area corresponding to the first process, the sum of distances is arranged in ascending order to form a decision execution table; And set the decision execution threshold. When the number of decision function values ​​reaches the decision execution threshold, stop making decisions, take the minimum value of the current decision function value corresponding to the output decision, and arrange the remaining decisions from small to large to form an alternative decision table.

[0013] According to the above technical solution, it also includes: Based on the output decisions, a functional area allocation list is formed; Based on the functional area allocation list and the functional area mark list, if there is the same process in the same functional area, the current decision is abandoned and the first decision is reselected from the alternative decision table until it is confirmed that there is no same process in the same functional area, and then the decision is fed back to the administrator node; If there is an alternative decision table, the new decision cannot be selected and an alarm is sent to the administrator node.

[0014] A smart factory intelligent control and decision-making method, the method comprising: receiving input work orders for function area tag processing to form a function area tag list; Receive input work orders and perform transfer path analysis to obtain a functional area allocation list, wherein the transfer path includes the transfer distance of the material between functional areas, the time the material stays on the transfer device, and the weight of the material; Receive the functional area assignment list to perform a comparison operation with the functional area marking list, and after confirming that the same process does not exist in the same functional area, feedback is given to the administrator node.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: based on the smart factory, the present application adopts an intelligent decision-making method, builds a command and decision-making platform based on the input of work orders, and realizes the utilization rate of the material resource transfer devices between different functional areas within the smart factory. It can shorten the residence time of materials in the production process, improve production efficiency, optimize the process, realize rapid switching and adjustment of production lines, improve production flexibility, reduce material loss and transfer resource costs, effectively reduce production costs, improve product quality, and enhance the market competitiveness of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a module of an intelligent control and decision-making system for a smart factory according to the present invention; Figure 2 This is a functional flow diagram of an intelligent control and decision-making system for a smart factory of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example: Figure 1-Figure 2As shown, the present invention provides a technical solution, specifically including an intelligent control and decision-making system for a smart factory, the system comprising: A functional area marking unit 101 is configured to receive an input work order and perform functional area marking processing to form a functional area marking list; the functional area marking processing includes marking processing according to the comparison between the functional area area and the area required for the process, wherein, if the area required for the process of any work order in the input work order list is larger than the area of ​​a certain functional area, then the process is marked on a certain functional area, and each process is marked only once to form a functional area marking list for a certain functional area.

[0019] In the actual production process, material production machinery sometimes requires large-scale mechanical equipment, and the requirements for functional areas are relatively high. Therefore, based on the premise of this application decision, the area of ​​the functional area is further limited, and the implementation conditions are set in priority. For example, if the equipment area required for a certain production process in the input work order is 50 square meters, then the production process will be marked on all functional areas less than 50 square meters, which means that the current functional area cannot match the production process.

[0020] A functional area allocation unit 102 is configured to receive an input work order and perform a transfer path analysis to obtain a functional area allocation list, wherein the transfer path includes a transfer distance of the material between functional areas, a time the material stays on the transfer device, and a weight of the material; The transport path analysis includes a first transport path analysis, a second transport path analysis, and a third transport path analysis; Among them, the first transfer path analysis seeks the optimal solution based on the transfer distance of materials between functional areas to form the first functional area allocation decision; the second transfer path analysis is based on the length of time the material stays on the transfer device, and forms the second functional area allocation decision based on the first functional area allocation decision; the third transfer path analysis is based on the material weight, and forms the third functional area allocation decision based on the second functional area allocation decision.

[0021] The first functional area allocation decision includes: The functional area list in the smart factory is modeled, and the sum of the distances from any functional area to all other functional areas is calculated. A functional area distance list is formed in ascending order. The association relationship between the processes in the input work order is extracted based on the input work order, where the association relationship refers to the existence of material transportation between two processes. Based on the association relationship between the processes, the process with the largest number of association relationships is selected for functional area selection to form the first functional area allocation decision, which specifically includes: selecting according to the functional area distance list, if the process is marked in the functional area mark list of the selected functional area, continue to select downward until the process and the functional area match is satisfied, and mark the process as the first process.

[0022] The second functional area allocation decision includes: Based on the first functional area allocation decision, the first process and the functional area where the first process is located are determined. Based on the input work order, the start time and material requirement data of all processes are obtained. Based on the functional area where the first process is located, the materials produced by the first process are transported to other functional areas. The transport data formed includes: Set the start time list to , They refer to the start time of production of other processes except the first process, arranged in order from small to large, and recorded at zero o'clock on the date of the start time of production. Represents the number of processes other than the first process; the material data produced by the first process to form the demand of each process in the corresponding time list, if there is no association with the first process, it is recorded as 0 to form a demand list , They refer to the material data produced by the first process that are required by other processes except the first process; Set the data of production materials per unit time of the first process as , then for any process i except the first process, calculate the time the material stays on the transfer device:

[0023] in, Represents the time that the material stays on the transfer device for any process i. If it is less than 0, the time the material stays on the transfer device is also considered to be 0; Represents the value data of any process i in the time list; Represents the value data of any process i in the requirement list; Represents the value of the integer; Represents the production demand deadline of the previous process of any process i. When i is equal to 1, Equal to the start time of production of the first process; represents a unit of time; when i is equal to 2, It is equal to the production demand deadline of the previous process, that is, , c is the start time of production of the first process; The length of time that the materials of each process stay on the transfer device is calculated as the output of the second functional area allocation decision.

[0024] The third functional area allocation decision includes: Based on the requirements list Get the material weight, which is recorded as a list ,in, They represent the weight of the material data produced by the first process required by other processes except the first process; Obtain the transfer distance between other functional areas and the functional area where the first process is located, and establish the decision function relationship as follows:

[0025] in, represents the value of the decision function under the j-th decision; , They represent the resource loss coefficient per unit time staying on the transfer device under unit weight and the transportation loss coefficient per unit distance under unit weight respectively; Represents the distance between the functional area where process i is located under the j-th decision and the functional area where the first process is located.

[0026] The decisions in the decision function include: Randomly assign each process to other functional areas except the functional area corresponding to the first process; and performing sequential calculations according to the decision execution table, wherein, based on the calculated sum of distances between other functional areas under each decision and the functional area corresponding to the first process, the sum of distances is arranged in ascending order to form a decision execution table; And set the decision execution threshold. When the number of decision function values ​​reaches the decision execution threshold, stop making decisions, take the minimum value of the current decision function value corresponding to the output decision, and arrange the remaining decisions from small to large to form an alternative decision table.

[0027] It also includes: a decision unit 103, which is configured to receive the function area allocation list to perform a comparison operation with the function area marking list, and after confirming that the same process does not exist in the same function area, feedback is given to the administrator node.

[0028] Based on the output decisions, a functional area allocation list is formed; Based on the functional area allocation list and the functional area mark list, if there is the same process in the same functional area, the current decision is abandoned and the first decision is reselected from the alternative decision table until it is confirmed that there is no same process in the same functional area, and then the decision is fed back to the administrator node; If there is an alternative decision table, the new decision cannot be selected and an alarm is sent to the administrator node.

[0029] A smart factory intelligent control and decision-making method, the method comprising: receiving input work orders for function area tag processing to form a function area tag list; Receive input work orders and perform transfer path analysis to obtain a functional area allocation list, wherein the transfer path includes the transfer distance of the material between functional areas, the time the material stays on the transfer device, and the weight of the material; Receive the functional area assignment list to perform a comparison operation with the functional area marking list, and after confirming that the same process does not exist in the same functional area, feedback is given to the administrator node.

[0030] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A smart factory intelligent control and decision-making system, characterized by: The system includes: a function area marking unit configured to receive an input work order and perform function area marking processing to form a function area marking list; a functional area allocation unit, configured to receive an input work order, perform a transfer path analysis, and obtain a functional area allocation list, wherein the transfer path includes a transfer distance of the material between functional areas, a time the material stays on the transfer device, and a weight of the material; A decision unit is configured to receive the function area allocation list to perform a comparison operation with the function area marking list, and after confirming that the same process does not exist in the same function area, feedback is given to the administrator node.

2. According to claim 1, the intelligent factory intelligent control and decision-making system is characterized by: The functional area marking process includes marking according to the comparison between the functional area area and the area required for the process, wherein, if the area required for the process of any work order in the input work order list is larger than the area of ​​a certain functional area, the process is marked on a certain functional area, and each process is marked only once to form a functional area marking list for a certain functional area.

3. The intelligent control and decision-making system for a smart factory according to claim 1 is characterized in that: The transport path analysis includes a first transport path analysis, a second transport path analysis, and a third transport path analysis; Among them, the first transfer path analysis seeks the optimal solution based on the transfer distance of materials between functional areas to form the first functional area allocation decision; the second transfer path analysis is based on the length of time the material stays on the transfer device, and forms the second functional area allocation decision based on the first functional area allocation decision; the third transfer path analysis is based on the material weight, and forms the third functional area allocation decision based on the second functional area allocation decision.

4. The intelligent factory intelligent control and decision-making system according to claim 3 is characterized by: The first functional area allocation decision includes: The functional area list in the smart factory is modeled, and the sum of the distances from any functional area to all other functional areas is calculated. A functional area distance list is formed in ascending order. The association relationship between the processes in the input work order is extracted based on the input work order, where the association relationship refers to the existence of material transportation between two processes. Based on the association relationship between the processes, the process with the largest number of association relationships is selected for functional area selection to form the first functional area allocation decision, which specifically includes: selecting according to the functional area distance list, if the process is marked in the functional area mark list of the selected functional area, continue to select downward until the process and the functional area match is satisfied, and mark the process as the first process.

5. The intelligent factory intelligent control and decision-making system according to claim 4 is characterized by: The second functional area allocation decision includes: Based on the first functional area allocation decision, the first process and the functional area where the first process is located are determined. Based on the input work order, the start time and material requirement data of all processes are obtained. Based on the functional area where the first process is located, the materials produced by the first process are transported to other functional areas. The transport data formed includes: Set the start time list to , They refer to the start time of production of other processes except the first process, arranged in order from small to large, and recorded at zero o'clock on the date of the start time of production. Represents the number of processes other than the first process; the material data produced by the first process to form the demand of each process in the corresponding time list, if there is no association with the first process, it is recorded as 0 to form a demand list , They refer to the material data produced by the first process that are required by other processes except the first process; Set the data of production materials per unit time of the first process as , then for any process i except the first process, calculate the time the material stays on the transfer device: ； in, Represents the time that the material stays on the transfer device for any process i. If it is less than 0, the time the material stays on the transfer device is also considered to be 0; Represents the value data of any process i in the time list; Represents the value data of any process i in the requirement list; Represents the value of the integer; Represents the production demand deadline of the previous process of any process i. When i is equal to 1, Equal to the start time of production of the first process; Represents a unit of time; The length of time that the materials of each process stay on the transfer device is calculated as the output of the second functional area allocation decision.

6. The intelligent factory intelligent control and decision-making system according to claim 5 is characterized by: The third functional area allocation decision includes: Based on the requirements list Get the material weight, which is recorded as a list ,in, They represent the weight of the material data produced by the first process required by other processes except the first process; Obtain the transfer distance between other functional areas and the functional area where the first process is located, and establish the decision function relationship as follows: ； in, represents the value of the decision function under the j-th decision; , They represent the resource loss coefficient per unit time staying on the transfer device under unit weight and the transportation loss coefficient per unit distance under unit weight respectively; Represents the distance between the functional area where process i is located under the j-th decision and the functional area where the first process is located.

7. The intelligent factory intelligent control and decision-making system according to claim 6 is characterized by: The decisions in the decision function include: Randomly assign each process to other functional areas except the functional area corresponding to the first process; and performing sequential calculations according to the decision execution table, wherein, based on the calculated sum of distances between other functional areas under each decision and the functional area corresponding to the first process, the sum of distances is arranged in ascending order to form a decision execution table; And set the decision execution threshold. When the number of decision function values ​​reaches the decision execution threshold, stop making decisions, take the minimum value of the current decision function value corresponding to the output decision, and arrange the remaining decisions from small to large to form an alternative decision table.

8. The intelligent factory intelligent control and decision-making system according to claim 7 is characterized by: Also includes: Based on the output decisions, a functional area allocation list is formed; Based on the functional area allocation list and the functional area mark list, if there is the same process in the same functional area, the current decision is abandoned and the first decision is reselected from the alternative decision table until it is confirmed that there is no same process in the same functional area, and then the decision is fed back to the administrator node; If there is an alternative decision table, the new decision cannot be selected and an alarm is sent to the administrator node.

9. A smart factory intelligent control and decision-making method, used to implement a smart factory intelligent control and decision-making system as claimed in any one of claims 1 to 8, characterized in that: The method includes: receiving input work orders for function area tag processing to form a function area tag list; Receive input work orders and perform transfer path analysis to obtain a functional area allocation list, wherein the transfer path includes the transfer distance of the material between functional areas, the time the material stays on the transfer device, and the weight of the material; Receive the functional area assignment list to perform a comparison operation with the functional area marking list, and after confirming that the same process does not exist in the same functional area, feedback is given to the administrator node.

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