CN113723730A - Task scheduling method and device based on preemption mode - Google Patents

Task scheduling method and device based on preemption mode Download PDF

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CN113723730A
CN113723730A CN202010457222.1A CN202010457222A CN113723730A CN 113723730 A CN113723730 A CN 113723730A CN 202010457222 A CN202010457222 A CN 202010457222A CN 113723730 A CN113723730 A CN 113723730A
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order
machine
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刘燕超
冯建国
陈焱
高云峰
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Han s Laser Technology Industry Group Co Ltd
Hans Laser Smart Equipment Group Co Ltd
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Han s Laser Technology Industry Group Co Ltd
Hans Laser Smart Equipment Group Co Ltd
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Abstract

A task scheduling method and device based on a preemption mode are disclosed, wherein a processing order is obtained and uploaded to a preset order management platform; when a processing request is received, acquiring current processing state information of a processing machine; screening a first processing order in the screening area according to the current processing state information, wherein the first processing order is a processing order meeting the processing request; sending the first processing order to a dispatching area, and changing the current order state of the first processing order into a dispatched order; when a processing instruction of the processing machine is received, the first processing order in the order area is distributed to the processing machine. According to the method and the device, the order management platform is preset, so that the pre-production of the processing orders becomes more flexible, the processing orders are pre-distributed on the order management platform, and therefore when an emergency occurs, the current order state of the processing orders in the order distribution area can be directly modified, and the processing orders can be re-produced.

Description

Task scheduling method and device based on preemption mode
Technical Field
The application belongs to the technical field of production and processing, and particularly relates to a task scheduling method and device based on a preemption mode.
Background
With the continuous deepening of information-based construction and the increasing diversification of product demands of consumers, the production mode of the manufacturing industry starts to be changed from large-batch rigid production to flexible production of multiple varieties and small quantities, new concepts and methods such as just-in-time production (JIT) and constraint Theory (TOC) appear in the field of manufacturing management, and related information-based management systems such as Enterprise Resource Planning (ERP), Manufacturing Execution System (MES) and advanced production planning and scheduling system (APS) are gradually accepted by enterprise managers and obtain great management benefits. The MES system is the core of industrial software, and the task scheduling and scheduling of the workshop is the core of the MES system.
Currently, a typical MES system in the market generally performs pre-scheduling on a processing order, that is, the processing order in the MES system is allocated to a corresponding processing machine in an advance and directional manner according to the processing capability of the processing machine, the current processing task amount of the processing machine, and the number of the processing orders in the MES system, but this pre-scheduling method has certain defects: 1) lack of flexibility, once a process order is allocated, a more complex operation is required to return the process order to the MES system; 2) and when an emergency (such as processing equipment failure or an emergency order) occurs, the MES system has difficulty in responding in time, so that the processing production is blocked.
Disclosure of Invention
The application discloses a task scheduling and scheduling method and device based on a preemption mode, and aims to solve the problems that when an existing MES system performs pre-scheduling on a processing order, the flexibility is insufficient and the MES system cannot respond in time when an emergency occurs.
Therefore, according to a first aspect, an embodiment of the present invention discloses a task scheduling method based on a preemption mode, including:
acquiring a processing order from an MES (manufacturing execution system) and uploading the processing order to a preset order management platform, wherein the preset order management platform comprises a screening area and a dispatching area;
when a processing request of a processing machine is received, acquiring current processing state information of the processing machine;
screening a first processing order in a screening area of an order management platform according to the current processing state information of a processing machine, wherein the first processing order is a processing order meeting a processing request;
sending the first processing order to a dispatching area of an order management platform, and changing the current order state of the first processing order into a dispatched order;
when a processing instruction of the processing machine is received, the first processing order in the order area is distributed to the processing machine.
Further, acquiring a processing order from the MES system, and uploading the processing order to a preset order management platform specifically includes:
acquiring a processing order from an MES system, and analyzing the processing order;
acquiring processing information of a processing order;
and checking the processing information, judging whether error information content exists in the processing information, if so, sending warning information of error processing information content, and otherwise, uploading the processing order to a preset order management platform.
Further, checking the processing information, determining whether error information content exists in the processing information, if so, sending warning information that the processing information content is wrong, otherwise, after uploading the processing order to a preset order management platform, the method further comprises:
acquiring process information of a processing order;
and judging whether the processing order comprises a plurality of processing procedures or not according to the procedure information of the processing order, if so, splitting the processing procedures of the processing order to obtain the processing order corresponding to each processing procedure.
Further, according to the current processing state information of the processing machine, a first processing order is screened in the screening area of the order management platform, and the method specifically comprises the following steps:
judging whether the processing order in the screening area carries a machine station identification corresponding to the processing machine station;
and if the machine station identification corresponding to the processing machine station is carried, determining the processing order carrying the machine station identification as a first processing order.
And if the machine station identification corresponding to the processing machine station is not carried, screening the processing order meeting the current processing conditions of the processing machine station in the screening area, and determining the processing order meeting the current processing conditions of the processing machine station as a first processing order.
Further, the method for screening the processing orders meeting the current processing conditions of the processing machine in the screening area specifically comprises the following steps:
acquiring the processing speed and the processing waiting time of the processing machine from the current processing state information of the processing machine;
acquiring the processing quantity and the planned completion time of a processing order;
calculating the processing time of the processing order according to the processing speed and the processing quantity;
calculating the actual finishing time of the processing order according to the waiting processing time and the processing time;
and judging whether the actual finishing time is greater than the planned finishing time, if so, judging that the processing order does not accord with the current processing condition of the processing machine, otherwise, judging that the processing order accords with the current processing condition of the processing machine.
Further, after the first processing order is sent to a dispatching area of the order management platform and the current order status of the first processing order is changed to be dispatched, the method further comprises the following steps:
when an order information modification instruction of the first processing order is received, the first processing order is sent to the screening area from the order dispatching area according to the order information modification instruction, and the current order state of the first processing order is changed into an unpinned order.
According to the order information modification instruction, judging the order information modification content of the first processing order;
if the order information modification content is process sequence adjustment, adjusting the sequence of the first processing order in the screening area;
and if the order information modification content is order data modification, sending the first processing order to the MES system, and modifying the order data of the first processing order on the MES system.
Further, when receiving a processing instruction of the processing machine, allocating the first processing order to the processing machine, specifically including:
sequencing all first processing orders in the order distribution area to obtain an order sequencing result;
and when a processing instruction of the processing machine is received, giving a first processing order with the priority in the order sorting result to the processing machine.
According to a second aspect, an embodiment of the present invention provides a task scheduling apparatus based on a preemption mode, including:
the system comprises an uploading module, a processing module and a processing module, wherein the uploading module is used for acquiring a processing order from an MES system and uploading the processing order to a preset order management platform, and the preset order management platform comprises a screening area and a dispatching area;
the processing system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the current processing state information of a processing machine when a processing request of the processing machine is received;
the screening module is used for screening a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine, wherein the first processing order is a processing order meeting the processing request;
the change module is used for sending the first processing order to a dispatching area of the order management platform and changing the current order state of the first processing order into a dispatched order;
and the distribution module is used for distributing the first processing order in the order distribution area to the processing machine when the processing instruction of the processing machine is received.
According to a third aspect, the present invention provides a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor, when executing the computer program, implementing the steps of the preemptive mode based task scheduling method according to any of the first aspect.
According to a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the preemptive mode-based task scheduling method according to any one of the first aspects described above.
The invention has the beneficial effects that:
a task scheduling method and device based on a preemption mode are characterized in that an order management platform is preset, a processing order is sent out from an MES system and enters a screening area of the order management platform, when a processing request of a processing machine is received, the processing order meeting the processing request is screened in the screening area according to the current processing state information of the processing machine, then the processing order is sent to a dispatching area, the current order state of the processing order is changed into the dispatched order, and when a processing instruction of the processing machine is received, the processing order is sent to the processing machine from the dispatching area. According to the method and the device, the order management platform is preset, the pre-scheduling of the processing orders becomes more flexible, the processing orders are pre-distributed on the order management platform, when the processing instructions of the processing machine are received, the processing orders are sent to the processing machine from the order distribution area, therefore, when an emergency occurs, the processing orders in the order distribution area cannot be influenced, the processing orders can be re-scheduled after the current order state of the processing orders in the order distribution area is directly modified, and the utilization rate of the processing machine is maximized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a task scheduling method based on a preemption mode according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a task scheduling device based on a preemption mode according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of one embodiment of a computer device according to the present application.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of a task scheduling and scheduling method based on a preemption mode disclosed in this embodiment is shown, where the task scheduling and scheduling method based on a preemption mode includes:
s101, obtaining a processing order from an MES system, and uploading the processing order to a preset order management platform, wherein the preset order management platform comprises a screening area and a dispatching area.
The preset order management platform can be developed based on an MES system, can be an intermediate platform between the MES system and a processing machine, and comprises a screening area and a dispatching area. Specifically, a processing order sent from the MES system is obtained, and the processing order is transmitted to a screening area of a preset order management platform.
S102, when a processing request of a processing machine is received, current processing state information of the processing machine is obtained;
specifically, the processing machine sends a processing request to the order management platform under a predetermined condition, and obtains current processing state information of the processing machine when receiving the processing request of the processing machine, where the predetermined condition may be a manually set time period, such as 30min, 60min, 90min, or may be that the processing machine immediately sends the processing request to the order management platform after completing one processing order. The current processing state information of the processing machine may include a type of achievable processing operation, a processing speed, a predicted completion time of the current order, and the like, and in this embodiment, the type of achievable processing operation may be cutting, bending, punching, welding, and the like, wherein the processing machine may be one or a combination of an FMS automated processing system and a stand-alone discrete processing device.
S103, screening a first processing order in the screening area of the order management platform according to the current processing state information of the processing machine, wherein the first processing order is a processing order meeting the processing request.
Specifically, according to the current processing state information of the processing machine, the processing orders are screened in the screening area of the order management platform, so that the processing orders meeting the processing request are screened out. For example, the processing operation that the a processing machine can perform is cutting, and when a processing request of the a processing machine is received, the system automatically screens all processing orders that need to be processed by cutting in the screening area of the order management platform. In a specific embodiment of the present application, after all the processing orders that need to be cut are screened, the processing orders that need to be cut may be further screened according to the processing speed of the a processing machine, the current workload, and the predicted completion time of the current order, so as to obtain the processing orders that conform to the a processing machine.
In another specific embodiment of the present application, when a plurality of processing machines send processing requests to the order management platform at the same time, the plurality of processing machines are prioritized, wherein the prioritizing of the plurality of processing machines may be performed according to models of the processing machines or processing rates of the processing machines, and it is determined whether the processing orders are present and meet the processing requests of the plurality of processing machines, if so, the processing orders meeting the processing requests of the plurality of processing machines are allocated to the processing machines with higher priorities, and if not, the processing orders are allocated to the corresponding processing machines meeting the processing requests.
S104, the first processing order is sent to a dispatching area of the order management platform, and the current order state of the first processing order is changed into a dispatched order.
Specifically, after the machining orders meeting the machining request are screened out, the machining orders meeting the machining request are sent to a dispatching area of the order management platform, and the current order state of the machining orders is changed into the dispatched order. The current order state is changed into the dispatched processing order and stored in the dispatch area, and the processing order conforming to the processing request is correlated with the processing machine sending the processing request, so that other processing machines can not perform secondary selection on the processing order, and the processing machines are prevented from conflicting in the process of screening the processing order.
In a specific embodiment of the present application, changing the current order status of the first process order into the order already dispatched may be implemented by using an optimistic lock, specifically, a VERSION field is added to a table field of the process order, when a certain process order meets the process request of the B process machine, a VERSION field value in the process order is changed from 0 to 1, which indicates that the process order is already occupied by the B process machine, and the process order is not allocated to another machine, and the process order with a VERSION field of 1 is stored in an order dispatching area of the order management platform.
S105, when the processing instruction of the processing machine is received, the first processing order in the order distribution area is distributed to the processing machine.
Specifically, the processing machine sends a processing instruction to the order management platform under a predetermined condition, and when the processing instruction of the processing machine is received, the first processing order in the order dispatching area is distributed to the processing machine. In a specific embodiment of the present application, the predetermined condition may be that the processing machine sends a processing instruction to the order management platform after completing one processing order, that is, after completing one processing order. In another specific embodiment of the present application, the predetermined condition may also be set according to the material loading condition of the processing order, for example, when the material loading of the processing order is completed, the order management platform is issued with a processing instruction.
The method comprises the steps that an order management platform is preset, a processing order is sent out from an MES system and enters a screening area of the order management platform, when a processing request of a processing machine is received, the processing order meeting the processing request is screened in the screening area according to the current processing state information of the processing machine, then the processing order is sent to a dispatching area, the current order state of the processing order is changed into a dispatched order, and when a processing instruction of the processing machine is received, the processing order is sent to the processing machine from the dispatching area. According to the method and the device, the order management platform is preset, the pre-scheduling of the processing orders becomes more flexible, the processing orders are pre-distributed on the order management platform, when the processing instructions of the processing machine are received, the processing orders are sent to the processing machine from the order distribution area, therefore, when an emergency occurs, the processing orders in the order distribution area cannot be influenced, the processing orders can be re-scheduled after the current order state of the processing orders in the order distribution area is directly modified, and the utilization rate of the processing machine is maximized.
Further, acquiring a processing order from the MES system, and uploading the processing order to a preset order management platform specifically includes:
acquiring a processing order from an MES system, and analyzing the processing order;
acquiring processing information of a processing order;
and checking the processing information, judging whether error information content exists in the processing information, if so, sending warning information of error processing information content, and otherwise, uploading the processing order to a preset order management platform.
Specifically, before uploading the processing order to the preset order management platform, the processing order information needs to be checked, specifically, the processing order is acquired from the MES system, the acquired processing order is analyzed to acquire the processing information in the processing order, the processing information is checked, whether error information content exists in the processing information or not is judged, if the error information content exists in the processing information, warning information that the processing information content is wrong is sent, and if the error information content does not exist in the processing information, the processing order is uploaded to the preset order management platform. The processing information can be checked through a preset standard order template, and whether error information content exists in the processing information is checked through comparing the processing information in the processing order with the information content in the preset standard order template.
In the above embodiment, the processing information is checked to determine whether the processing information has the wrong information content, the processing information is checked before processing, if the processing information has the wrong information content, a warning message that the processing information content is wrong is sent, and if the processing information does not have the wrong information content, the processing order is uploaded to a preset order management platform, so that the processing order with the wrong information content can be found in advance.
Further, checking the processing information, determining whether error information content exists in the processing information, if so, sending warning information that the processing information content is wrong, otherwise, after uploading the processing order to a preset order management platform, the method further comprises:
acquiring process information of a processing order;
and judging whether the processing order comprises a plurality of processing procedures or not according to the procedure information of the processing order, if so, splitting the processing procedures of the processing order to obtain the processing order corresponding to each processing procedure.
The processing order may include a plurality of processing steps or only one processing step. Specifically, after the processing order is uploaded to a preset order management platform, process information of the processing order is obtained, whether the processing order comprises multiple processing processes or not is judged according to the process information of the processing order, if the processing order comprises the multiple processing processes, the processing order is split, and the processing order is split into multiple single-process processing orders. If the processing order only comprises one processing procedure, the procedure splitting of the processing order is not needed
In the above embodiment, it is determined whether the processing order includes multiple processing steps according to the step information of the processing order, and if the processing order includes multiple processing steps, the processing order is split into multiple single-step processing orders. Through the process splitting, one processing order can be decomposed into a plurality of single-process processing orders according to the process, and then the obtained plurality of single-process processing orders are distributed to different machines for processing, so that the processing efficiency can be improved.
In a specific embodiment of the present application, a certain processing order includes 5 processing steps, the processing order is split to obtain 5 single-step processing orders, idle and busy conditions of processing machines corresponding to the 5 single-step processing orders are respectively determined, and the processing order is firstly allocated to a processing machine with a higher idle degree among the processing machines corresponding to the 5 single-step processing orders, and the processing machine performs processing first, for example, the processing machines corresponding to the steps 1 to 4 are all in a busy state, while the processing machine corresponding to the step 5 is in a leisure state, the processing order is firstly allocated to the processing machine corresponding to the step 5, and the processing machine corresponding to the step 5 performs processing first.
In another specific embodiment of the present application, after the step information of the processing order is obtained, the step type of the processing order is determined according to the step information of the processing order, if the step type of the processing order is a fixed step, the processing step of the processing order is not allowed to be changed in the processing process, and if the step type of the processing order is an active step, the processing step of the processing order is allowed to be changed in the processing process.
Further, according to the current processing state information of the processing machine, a first processing order is screened in the screening area of the order management platform, and the method specifically comprises the following steps:
judging whether the processing order in the screening area carries a machine station identification corresponding to the processing machine station;
and if the machine station identification corresponding to the processing machine station is carried, determining the processing order carrying the machine station identification as a first processing order.
And if the machine station identification corresponding to the processing machine station is not carried, screening the processing order meeting the current processing conditions of the processing machine station in the screening area, and determining the processing order meeting the current processing conditions of the processing machine station as a first processing order.
The current processing state information of the processing machine comprises a machine identifier corresponding to the processing machine, the machine identifier can be set when the processing order is generated, and the machine identifier of each processing order is unique and used for associating the processing order with the processing machine.
Specifically, when the processing order is screened in the screening area of the order management platform, whether the processing order in the screening area carries a machine identifier corresponding to the processing machine is judged, if the processing order in the screening area carries the machine identifier corresponding to the processing machine, the processing order carrying the machine identifier is determined as the processing order meeting the current processing conditions of the processing machine, and if the processing order in the screening area does not carry the machine identifier corresponding to the processing machine, the processing order meeting the current processing conditions of the processing machine is screened in the screening area.
In the above embodiment, by setting the machine identifier, and when screening the processing order, determining whether the processing order in the screening area carries the machine identifier corresponding to the processing machine or not, if the processing order in the screening area carries the machine identifier corresponding to the processing machine, directly determining the processing order carrying the machine identifier as the processing order meeting the current processing conditions of the processing machine, and if the processing order in the screening area does not carry the machine identifier corresponding to the processing machine, screening the processing order meeting the current processing conditions of the processing machine in the screening area, the screening time of the processing order can be reduced, and the screening efficiency can be improved.
Further, the method for screening the processing orders meeting the current processing conditions of the processing machine in the screening area specifically comprises the following steps:
acquiring the processing speed and the processing waiting time of the processing machine from the current processing state information of the processing machine;
acquiring the processing quantity and the planned completion time of a processing order;
calculating the processing time of the processing order according to the processing speed and the processing quantity;
calculating the actual finishing time of the processing order according to the waiting processing time and the processing time;
and judging whether the actual finishing time is greater than the planned finishing time, if so, judging that the processing order does not accord with the current processing condition of the processing machine, otherwise, judging that the processing order accords with the current processing condition of the processing machine.
Specifically, the processing speed, the waiting processing time, the processing number of the processing order and the scheduled completion time of the processing machine are obtained, the processing time of the processing order is calculated according to the processing speed and the processing number, the actual completion time of the processing order is calculated according to the waiting processing time and the processing time, whether the actual completion time is greater than the scheduled completion time or not is judged, if the actual completion time is greater than the scheduled completion time, it is judged that the processing order does not accord with the current processing condition of the processing machine, if the actual completion time is less than or equal to the scheduled completion time, it is judged that the order accords with the current processing condition of the processing machine, and whether the processing order accords with the current processing condition of the processing machine can be quickly judged according to the actual completion time and the scheduled completion time.
In the specific embodiment of the present application, if the processing speed of the C processing machine is 20 workpieces per hour, the waiting time is 20h, the processing quantity of a certain processing order is 100, the planned completion time 24h of the processing order is calculated according to the processing speed and the processing quantity, the processing time of the processing order is 5h, the actual completion time of the processing order is calculated according to the waiting time and the processing time and is 25h, when the actual completion time 25h is greater than the planned completion time 24h, the processing order does not conform to the current processing condition of the C processing machine, and therefore the processing order cannot be allocated to the C processing machine.
Further, after the first processing order is sent to a dispatching area of the order management platform and the current order status of the first processing order is changed to be dispatched, the method further comprises the following steps:
when an order information modification instruction of a first processing order is received, sending the first processing order from the order dispatching area to the screening area according to the order information modification instruction, and changing the current order state of the first processing order into an unporting order;
according to the order information modification instruction, judging the order information modification content of the first processing order;
if the order information modification content is process sequence adjustment, adjusting the sequence of the first processing order in the screening area;
and if the order information modification content is order data modification, sending the first processing order to the MES system, and modifying the order data of the first processing order on the MES system.
Specifically, after the first processing order is sent to the dispatching area of the order management platform, and the current order state of the first processing order is changed into the dispatched order, whether a modification demand exists is judged, if the modification demand exists, an order information modification instruction of the first processing order is received, the first processing order is sent to the screening area from the dispatching area according to the order information modification instruction, and the current order state of the first processing order is changed into the unpinned order. In a specific embodiment of the present application, the first process order is sent from the dispatch area to the screening area, and the current order state of the first process order is changed to an unportioned order, that is, the VERSION field in the table field of the process order needs to be updated, the VERSION field is changed from 1 to 0, which indicates that the current order state of the first process order changes, and the first process order is returned to the screening area and changed into a common process order.
In a specific embodiment of the application, after the first processing order is sent to the screening area from the order dispatching area, the order information modification content of the first processing order is judged according to the order information modification instruction; if the order information modification content is process sequence adjustment, adjusting the sequence of the first processing order in the screening area; and if the order information modification content is order data modification, sending the first processing order to the MES system, and modifying the order data of the first processing order on the MES system, wherein the order data modification can be carried out only in the MES system. It should be noted that the processing order of the processing machine during processing cannot be automatically returned to the order management platform, and the return operation can be performed only after the operator switches to the manual mode.
In the above embodiment, when an emergency occurs, the process orders in the dispatch area are not affected, and the process orders can be rearranged by directly modifying the current order state of the process orders in the dispatch area, so that the utilization rate of the processing machine is maximized.
Further, when receiving a processing instruction of the processing machine, allocating the first processing order to the processing machine, specifically including:
sequencing all first processing orders in the order distribution area to obtain an order sequencing result;
and when a processing instruction of the processing machine is received, giving a first processing order with the priority in the order sorting result to the processing machine.
The first process order of a certain processing machine in the dispatch area may include a plurality of first process orders, that is, one or more first process orders meeting a processing request of a certain processing machine in the dispatch area may be provided. In a specific embodiment of the present application, when a plurality of processing orders are received in the dispatch area, all the first processing orders in the dispatch area may be sorted according to the planned completion time of the processing order to obtain an order sorting result, and when a processing instruction of the processing machine is received, the first processing order with the planned completion time closest to the current time is sent to the processing machine, for example, a difference between the planned completion time of the first processing order a and the current time is 5h, and a difference between the planned completion time of the first processing order b and the current time is 8h, so that the first processing order a has a higher priority and is more urgent in the sorting process, and therefore the first processing order a is preferentially allocated to the processing machine for processing.
In a specific embodiment of the present application, after allocating the processing order (i.e., the first processing order) meeting the processing request to the processing machine, the processing machine performs a self-check according to the processing requirement on the processing order, where the self-check includes whether the detection of the processing condition of the processing machine itself meets the processing requirement of the processing order and whether the material on the processing machine meets the processing requirement of the processing order, and if the detection of the processing condition of the processing machine itself does not meet the processing requirement of the processing order and/or the material on the processing machine does not meet the processing requirement of the processing order, if the processing machine fails or the material on the processing machine is in short supply after allocating the processing order, it is determined that the processing machine cannot complete the processing order, and the processing order is returned from the processing machine to the screening area of the order management platform, and the current processing state of the processing order is modified to be an unporting order, and re-screening the processing order after the processing order enters the screening area, and finishing the processing of the processing order by a machine meeting the processing requirement, wherein if the processing machine is an FMS (fast moving manufacturing system), the processing machine automatically returns the processing order to the screening area of the order management platform, and if the processing machine is a single-machine discrete processing device, the operator manually returns the processing order to the screening area of the order management platform. If the detection of the processing conditions of the processing machine and the materials on the processing machine meet the processing requirements of the processing order, the processing machine is determined to be capable of completing the processing order, and the processing order is completed by the processing machine.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. The storage medium may be a non-volatile storage medium such as a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Access Memory (RAM).
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
Referring to fig. 2, a schematic structural diagram of the task scheduling and scheduling apparatus based on the preemption mode is shown, where the task scheduling and scheduling apparatus based on the preemption mode includes:
the uploading module 201 is used for acquiring a processing order from the MES system and uploading the processing order to a preset order management platform, wherein the preset order management platform comprises a screening area and a dispatching area;
an obtaining module 202, configured to obtain current processing state information of a processing machine when a processing request of the processing machine is received;
the screening module 203 is configured to screen a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine, where the first processing order is a processing order meeting the processing request;
a changing module 204, configured to send the first processing order to a dispatching area of the order management platform, and change a current order state of the first processing order into a dispatched order;
the allocating module 205 is configured to allocate the first process order in the order area to the processing machine when the processing instruction of the processing machine is received.
Further, the uploading module 201 specifically includes:
the processing order acquisition unit is used for acquiring a processing order from the MES system and analyzing the processing order;
a processing information acquisition unit for acquiring processing information of a processing order;
and the processing information checking unit is used for checking the processing information, judging whether error information content exists in the processing information or not, if so, sending out warning information that the processing information content is wrong, and otherwise, uploading the processing order to a preset order management platform.
Further, the uploading module 201 further includes:
a process information acquisition unit for acquiring process information of the processing order;
and the processing procedure judging unit is used for judging whether the processing order comprises a plurality of processing procedures or not according to the procedure information of the processing order, and splitting the processing procedure of the processing order if the processing order comprises the plurality of processing procedures to obtain the processing order corresponding to each processing procedure.
Further, the screening module 203 specifically includes:
the screening unit is used for judging whether the processing orders in the screening area carry machine station identifications corresponding to the processing machine stations or not;
and the first screening result unit is used for determining the processing order carrying the machine station identifier as a first processing order when the machine station identifier corresponding to the processing machine station is carried.
And the second screening result unit is used for screening the processing orders meeting the current processing conditions of the processing machine in the screening area when the machine identification corresponding to the processing machine is not carried, and determining the processing orders meeting the current processing conditions of the processing machine as the first processing orders.
Further, the screening unit specifically includes:
a current processing state information obtaining subunit, configured to obtain, from the current processing state information of the processing machine, a processing speed and a processing waiting time of the processing machine;
a processing order information acquiring subunit, configured to acquire the processing quantity and the planned completion time of the processing order;
the first calculating subunit is used for calculating the processing time of the processing order according to the processing speed and the processing quantity;
the second calculating subunit is used for calculating the actual finishing time of the processing order according to the waiting processing time and the processing time;
and the condition judging subunit is used for judging whether the actual finishing time is greater than the planned finishing time, if so, judging that the processing order does not accord with the current processing condition of the processing machine, and otherwise, judging that the processing order accords with the current processing condition of the processing machine.
Further, the task scheduling device based on the preemption mode further includes:
and the information modification triggering module is used for sending the first processing order from the order dispatching area to the screening area according to the order information modification instruction when the order information modification instruction of the first processing order is received, and changing the current order state of the first processing order into an unpinned order.
The information modification judging module is used for judging the order information modification content of the first processing order according to the order information modification instruction;
the first judgment result module is used for adjusting the sequence of the first processing order in the screening area when the order information modification content is the process sequence adjustment;
and the second judgment result module is used for sending the first processing order to the MES system and modifying the order data of the first processing order on the MES system when the order information modification content is order data modification.
Further, the allocating module 205 specifically includes:
the ordering unit is used for ordering all the first processing orders in the order distribution area to obtain order ordering results;
and the distribution unit is used for giving the first processing order with the priority ranking first in the order ranking result to the processing machine when receiving the processing instruction of the processing machine.
The application discloses a task scheduling and scheduling device based on a preemption mode, which comprises an uploading module, a scheduling module and a scheduling module, wherein the uploading module is used for acquiring a processing order from an MES system and uploading the processing order to a preset order management platform; the processing system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the current processing state information of a processing machine when a processing request of the processing machine is received; the screening module is used for screening a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine, wherein the first processing order is a processing order meeting the processing request; the change module is used for sending the first processing order to a dispatching area of the order management platform and changing the current order state of the first processing order into a dispatched order; and the distribution module is used for distributing the first processing order in the order distribution area to the processing machine when the processing instruction of the processing machine is received. According to the method and the device, the order management platform is preset, the pre-scheduling of the processing orders becomes more flexible, the processing orders are pre-distributed on the order management platform, when the processing instructions of the processing machine are received, the processing orders are sent to the processing machine from the order distribution area, therefore, when an emergency occurs, the processing orders in the order distribution area cannot be influenced, the processing orders can be re-scheduled after the current order state of the processing orders in the order distribution area is directly modified, and the utilization rate of the processing machine is maximized.
In order to solve the technical problem, an embodiment of the present application further provides a computer device. Referring to fig. 3, fig. 3 is a block diagram of a basic structure of a computer device according to the present embodiment.
The computer device 3 comprises a memory 31, a processor 32, a network interface 33 communicatively connected to each other via a system bus. It is noted that only the computer device 3 having the components 31-33 is shown in the figure, but it is to be understood that not all of the shown components are required to be implemented, and that more or less components may be implemented instead. As will be understood by those skilled in the art, the computer device is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and the hardware includes, but is not limited to, a microprocessor, an Application Specific Integrated Circuit (ASIC), a Programmable Gate Array (FPGA), a Digital Signal Processor (DSP), an embedded device, and the like.
The computer device can be a desktop computer, a notebook, a palm computer, a cloud server and other computing devices. The computer equipment can carry out man-machine interaction with a user through a keyboard, a mouse, a remote controller, a touch panel or voice control equipment and the like.
The memory 31 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a Programmable Read Only Memory (PROM), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the memory 31 may be an internal storage unit of the computer device 3, such as a hard disk or a memory of the computer device 3. In other embodiments, the memory 31 may also be an external storage device of the computer device 3, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the computer device 3. Of course, the memory 31 may also comprise both an internal storage unit of the computer device 3 and an external storage device thereof. In this embodiment, the memory 31 is generally used for storing an operating system and various types of application software installed in the computer device 3, such as program codes of a task scheduling method based on a preemption mode. Further, the memory 31 may also be used to temporarily store various types of data that have been output or are to be output.
The processor 32 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor 32 is typically used to control the overall operation of the computer device 3. In this embodiment, the processor 32 is configured to execute the program code stored in the memory 31 or process data, for example, execute the program code of the task scheduling method based on the preemption mode.
The network interface 33 may comprise a wireless network interface or a wired network interface, and the network interface 33 is generally used for establishing communication connection between the computer device 3 and other electronic devices.
The present application further provides another embodiment, which is to provide a computer-readable storage medium storing a program of a preemption mode-based task scheduling method, where the program of the preemption mode-based task scheduling method is executable by at least one processor to cause the at least one processor to perform the steps of the preemption mode-based task scheduling method as described above.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims (10)

1. A task scheduling method based on a preemption mode is characterized by comprising the following steps:
acquiring a processing order from an MES (manufacturing execution system) and uploading the processing order to a preset order management platform, wherein the preset order management platform comprises a screening area and a dispatching area;
when a processing request of a processing machine is received, acquiring current processing state information of the processing machine;
screening a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine, wherein the first processing order is a processing order meeting the processing request;
sending the first processing order to a dispatching area of the order management platform, and changing the current order state of the first processing order into a dispatched order;
and when a processing instruction of the processing machine is received, distributing the first processing order in the order distribution area to the processing machine.
2. The task scheduling method based on the preemption mode as set forth in claim 1, wherein the step of obtaining a processing order from an MES system and uploading the processing order to a preset order management platform specifically comprises:
acquiring a processing order from an MES system, and analyzing the processing order;
acquiring processing information of the processing order;
and checking the processing information, judging whether error information content exists in the processing information, if so, sending warning information of error processing information content, otherwise, uploading the processing order to the preset order management platform.
3. The task scheduling method based on the preemption mode as set forth in claim 2, wherein the checking the processing information, determining whether there is wrong information content in the processing information, if so, sending out warning information that the processing information content is wrong, otherwise, after uploading the processing order to the preset order management platform, further comprises:
acquiring process information of the processing order;
and judging whether the processing order comprises a plurality of processing procedures or not according to the procedure information of the processing order, if so, splitting the processing procedures of the processing order to obtain the processing order corresponding to each processing procedure.
4. The task scheduling method based on the preemption mode as set forth in claim 1, wherein the step of screening a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine comprises:
judging whether the processing order in the screening area carries a machine station identifier corresponding to the processing machine station;
if the machine station identification corresponding to the processing machine station is carried, determining the processing order carrying the machine station identification as a first processing order;
and if the machine station identification corresponding to the processing machine station is not carried, screening the processing order meeting the current processing conditions of the processing machine station in the screening area, and determining the processing order meeting the current processing conditions of the processing machine station as a first processing order.
5. The task scheduling method based on the preemption mode of claim 4, wherein the step of screening the processing orders in the screening area that meet the current processing conditions of the processing machine comprises:
acquiring the processing speed and the processing waiting time of the processing machine from the current processing state information of the processing machine;
acquiring the processing quantity and the planned completion time of a processing order;
calculating the processing time of the processing order according to the processing speed and the processing quantity;
calculating the actual finishing time of the processing order according to the waiting processing time and the processing time;
and judging whether the actual finishing time is greater than the planned finishing time, if so, judging that the processing order does not accord with the current processing condition of the processing machine, otherwise, judging that the processing order accords with the current processing condition of the processing machine.
6. The preemption-mode-based task scheduling method according to any one of claims 1 to 5, wherein after the sending the first processing order to a dispatch area of the order management platform and changing the current order status of the first processing order to a dispatched order, further comprising:
when an order information modification instruction of the first processing order is received, sending the first processing order from the order dispatching area to the screening area according to the order information modification instruction, and changing the current order state of the first processing order into an unpinned order;
according to the order information modification instruction, judging the order information modification content of the first processing order;
if the order information modification content is process sequence adjustment, adjusting the sequence of the first processing order in the screening area;
and if the order information modification content is order data modification, sending the first processing order to the MES system, and modifying the order data of the first processing order on the MES system.
7. The method according to claim 6, wherein the allocating the first processing order to the processing machine when receiving the processing instruction of the processing machine comprises:
sequencing all the first processing orders in the order distribution area to obtain an order sequencing result;
and when a processing instruction of the processing machine is received, giving a first processing order with the priority ranking first in the order ranking result to the processing machine.
8. A task scheduling device based on a preemption mode, comprising:
the system comprises an uploading module, a processing module and a processing module, wherein the uploading module is used for acquiring a processing order from an MES (manufacturing execution system) and uploading the processing order to a preset order management platform, and the preset order management platform comprises a screening area and a dispatching area;
the processing system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the current processing state information of a processing machine when a processing request of the processing machine is received;
the screening module is used for screening a first processing order in a screening area of the order management platform according to the current processing state information of the processing machine, wherein the first processing order is a processing order meeting the processing request;
a change module, configured to send the first processing order to a dispatch area of the order management platform, and change a current order state of the first processing order into a dispatched order;
and the distribution module is used for distributing the first processing order in the order distribution area to the processing machine when the processing instruction of the processing machine is received.
9. A computer device comprising a memory in which a computer program is stored and a processor which, when executing the computer program, carries out the steps of the preemptive mode based task scheduling method according to any one of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the preemptive mode based task scheduling method according to any one of claims 1 to 7.
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