CN110705868B - Twin data-based ship yard operation scheduling system and scheduling method thereof - Google Patents
Twin data-based ship yard operation scheduling system and scheduling method thereof Download PDFInfo
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Abstract
The invention discloses a twin data-based ship yard operation scheduling system, which comprises a virtual layer, a physical layer and a communication layer, wherein the virtual layer is connected with the physical layer through the communication layer and carries out data interaction; twin models and data corresponding to the physical layer are constructed in the virtual layer; the physical layer collects field data and transmits the field data to the virtual layer through the communication layer; the virtual layer optimizes and dispatches the operation plan according to the twin model and the collected field data, and issues the operation plan data to the physical layer through the communication layer, so as to monitor the field dispatching process of the physical layer in real time. The invention also discloses a scheduling method of the twin data-based ship yard operation scheduling system.
Description
Technical Field
The invention relates to a yard operation scheduling system, in particular to a twin data-based ship yard operation scheduling system, and further relates to a scheduling method of the twin data-based ship yard operation scheduling system, belonging to the technical field of welding process design.
Background
The segmented yard is an indispensable part in a ship production system and is a place for stacking and temporarily storing after-treatment after segmented tire removal. According to different functions, the storage yard is divided into a processing storage yard and a temporary storage yard according to the functions. In a modern shipbuilding mode, a plurality of unpredictable factors such as weather, equipment, fields and the like are often encountered when the segmental yard operation is carried out, and the uncertain factors increase the difficulty and the performability of planning. Therefore, the real-time information interaction and data monitoring between the ship section scheduling site and the virtual factory are realized, and the important significance is realized on improving the efficiency of operation plan scheduling.
The concept prototype of the digital twin is firstly proposed in 2003 by the teaching of Grieves of the university of michigan, gradually developed and perfected, and the concept model is proposed in 2011 and comprises a physical product of a physical space, a virtual product of a virtual space and a data and information interaction interface between the physical product and the virtual product. The definition of the digital twin is to fully utilize a physical model, a digital device, operation historical data and the like, integrate a multidisciplinary, multi-physical quantity, multi-scale and multi-probability simulation process, complete mapping in a virtual space and reflect the full life cycle process of a corresponding physical entity. The digital twin is to create real-time mirror image of physical entity in virtual space in digital mode, that is, simulation model of physical entity in virtual space, to carry out complete and accurate digital description on physical entity through data and information interaction between physical entity and virtual entity, and to simulate, monitor, diagnose, predict and control the behavior and state of physical entity in physical environment.
Compared with the traditional scheduling mode, the digital twin-driven production scheduling mode and method are researched, a ship scheduling mechanism with virtual-real response, virtual-real interaction, virtual-real control and iterative optimization is formed through virtual-real mapping and interactive fusion of full elements, full data, a full model and full space, and coordinated matching and continuous optimization of scheduling elements can be realized. The invention provides a twin data-based ship segment yard scheduling modeling and optimizing method, which organically fuses and interacts real-time digitized virtual processes such as planning and scheduling, job scheduling, digitized simulation and the like and actual processes of ship yard construction through twin data (models). Real-time data collected by a dispatching site is fused and timely fed back to a production scheduling/dispatching system and a virtual simulation system, so that equipment faults, production delay and segmental stacking problems occurring in the production site are optimized and adjusted, a closed loop of comprehensive perception and fusion of a virtual yard platform, twin data and physical yard entities is formed, and the quick response capability and the production efficiency of the dispatching optimization of the ship yard operation are finally improved.
Disclosure of Invention
The invention aims to provide a twin data-based ship yard operation scheduling system.
The technical problem to be solved by the invention is to provide the twin data-based scheduling method of the ship yard operation scheduling system, which is characterized in that twin data acquired at a scheduling site are transmitted to the virtual simulation system in time, so that a series of disturbance problems occurring at a production site are optimized and adjusted, and the quick response capability and efficiency of the ship yard operation scheduling are finally improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a ship yard operation scheduling system based on twin data comprises a virtual layer, a physical layer and a communication layer, wherein the virtual layer is connected with the physical layer through the communication layer and carries out data interaction; twin models and data corresponding to the physical layer are constructed in the virtual layer; the physical layer collects field data and transmits the field data to the virtual layer through the communication layer; and the virtual layer optimizes and schedules the operation plan according to the twin model and the acquired field data, and issues the operation plan data to the physical layer through the communication layer to manage and control the field scheduling of the physical layer.
Wherein the physical layer comprises data acquisition equipment and yard equipment, the yard equipment comprising yard sites, build objects (ship segments) and build resources; the data acquisition equipment comprises RFID code scanning equipment and a video image acquisition device; the RFID code scanning equipment acquires the time of entering and exiting the storage yard of the segments, the stacking positions of the segments and the geometric parameter data of the segments, and the video image acquisition device monitors the scheduling process condition and the data of the segment interference condition; the physical layer is connected to the communication layer by a communication cable.
The communication layer comprises communication equipment, and the communication equipment is connected with the data acquisition equipment of the communication layer through a CAN bus, an OPC bus and a Modbus respectively; the communication equipment is connected with the virtual layer through the network at the same time, and transmits the data acquired by the data acquisition equipment to the virtual layer.
Wherein the virtual layer comprises a control module, field device data, and a digital model; the control module comprises a planning and scheduling module, an operation scheduling module, a scheduling simulation module, a field information acquisition module and a twin data fusion module; the plan scheduling module performs scheduling or manual scheduling on initially imported personnel, sectional information or an initial scheduling plan by using an intelligent algorithm, transmits the scheduling plan after scheduling to the scheduling simulation module and the operation scheduling module, and transmits the generated scheduling plan to external digital simulation software for simulation and optimization; the operation scheduling module issues an instruction to the site to implement scheduling; the scheduling simulation module transmits simulation data to the planning and scheduling module in real time, and the planning and scheduling module transmits a control command to the job scheduling module in real time; the field information acquisition module acquires field data and transmits the field data to the twin data fusion module, and the twin data fusion module fuses and analyzes the acquired data and the simulation data; the digital model maps the physical characteristic parameters of the scheduling entity object; the field information acquisition module issues an information acquisition instruction and data acquisition equipment to the physical layer through the information layer; and the data fusion module analyzes and fuses the data of the acquired information uploaded by the physical layer.
Wherein the yard site, the build object (ship segment) and the build resource have corresponding RFID tags containing parameter information for creating a data model and performing data processing; and the RFID information is uploaded to a communication layer through data acquisition equipment.
The construction resources comprise hoisting equipment, a flat trolley, welding equipment and a construction team, the construction resource information comprises the working capacity, the real-time position and the equipment fault state of the construction resources, and the construction resource information is uploaded to the communication layer through the data acquisition equipment.
A scheduling method of a ship yard operation scheduling system based on twin data comprises the following steps: the method comprises the following steps:
step 1, importing various information files of segments, fields and equipment and an initial storage yard information file acquired by an information acquisition module into a virtual information layer in a data table form through a data interaction interface; a plan scheduling module in the virtual layer selects manual scheduling or an intelligent algorithm to schedule plan scheduling according to the imported information file, and finally generates an initial segmental yard construction operation plan;
step 2, establishing a two-dimensional layout model and a three-dimensional dynamic model of required segments, fields, environments, workers and field devices in a scheduling simulation module based on technologies such as data-driven modeling simulation and the like, and dynamically simulating the processes of segment entering and leaving a storage yard in a virtual environment; software for constructing models and process Simulation comprises Quest, Unit 3D and Plant Simulation;
step 3, the scheduling personnel judges whether the simulation is reasonable, if the simulation process meets the requirements of the scheduling plan, the scheduling/scheduling scheme is allowed to be executed, and if the simulation result does not meet the requirements, the scheduling/scheduling scheme needs to be returned to the plan scheduling module or the operation scheduling module to modify the original plan;
step 4, the field information acquisition module issues an information acquisition instruction to data acquisition equipment of a physical layer through a communication layer; the method comprises the steps that a data acquisition device acquires field layout and other digital information, detects equipment operation conditions and segmented scheduling conditions, transmits the field acquisition information (segmented position information and equipment operation data) to a plan scheduling module, an operation scheduling module and a scheduling simulation module of a virtual layer, and serves as a data source for plan adjustment and simulation optimization;
and 5, judging whether abnormal conditions such as subsection interference, plan delay and the like exist in the yard operation of the physical layer by the construction team according to the information collected by the field equipment, if not, indicating that the yard scheduling is finished, and if so, reconfiguring planning parameters (including subsection piling position and yard entering and exiting date) for the operation scheduling system, and returning to the operation scheduling module of the virtual layer for rescheduling according to a certain strategy.
Has the advantages that: compared with the prior art, the method forms an operation scheduling and dispatching mechanism of virtual-real response, virtual-real interaction and virtual-real control building of the ship yard through virtual-real interaction behaviors, thereby realizing the optimized matching and efficient operation of production scheduling and dispatching elements. Meanwhile, by a novel scheduling optimization method, autonomous task-resource decision, dynamic iteration and continuous real-time optimization can be performed, and the quick response capability and efficiency of the ship yard operation scheduling are finally improved.
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FIG. 1 is a system schematic of a dispatch system of the present invention;
FIG. 2 is a flow chart of a scheduling method of the present invention;
FIG. 3 is a schematic diagram of the model and data flow of the present invention.
Detailed Description
The invention will be better understood from the following examples. However, it is easily understood by those skilled in the art that the descriptions of the embodiments are only for illustrating the present invention and should not be construed as limiting the present invention as detailed in the claims.
As shown in fig. 1, the architecture of the twin data based vessel yard operation scheduling system is divided into a physical layer, a communication layer and a virtual layer, wherein the communication layer serves as a bridge connecting the physical layer and the virtual layer. The virtual layer is built with twin models and data corresponding to the physical layer. The physical layer collects field data and transmits the field data to the virtual layer through the communication layer. And the virtual layer generates an initial field operation plan and an adjusted field operation plan according to the twin model and the acquired field data, and transmits the operation plan data to the physical layer through the communication layer to control the field scheduling of the physical layer.
The physical layer comprises a yard site (including site scale, spatial layout, time distribution and the like), a building object (ship segmentation), building resources (assembling and welding robot/production line, crane, transportation flat car, yard site and the like), data acquisition equipment and the like, which together form a physical world of the operation scheduling of the ship yard. The data acquisition equipment comprises RFID code scanning equipment and a video image acquisition device. The RFID code scanning equipment collects the time of entering and exiting the storage yard of the segments, the stacking positions of the segments and the geometric parameter data of the segments. The video image acquisition device monitors the scheduling process condition and the segmentation interference condition data. The physical layer is connected with the communication layer through the communication cable
Each building object (segment) is provided with a corresponding RFID label, and the RFID label comprises the code, the weight, the size (length, width, height and the like), the entering and exiting time of the segment, the actual site position information of the segment and the like; each yard site has a corresponding RFID tag, which includes site size information, hoisting capability information, welding capability information, and yard layout information (spatial layout and temporal distribution) of the yard.
The construction resources comprise hoisting equipment, a flat trolley, welding equipment, construction teams and the like, and the corresponding RFID radio frequency acquisition system, the multi-view stereoscopic vision acquisition system and the network communication module are arranged, so that the acquisition and monitoring of the working capacity, the real-time position, the equipment fault and other states of the construction resources are realized. The RFID data collector adopts a fixed or movable data collector, and the network communication module adopts a WIFI or Bluetooth module.
The communication layer comprises communication equipment, and the communication equipment is connected with the data acquisition equipment of the communication layer through a CAN bus, an OPC bus and a Modbus respectively; the communication equipment is connected with the virtual layer through the network at the same time, and transmits the data acquired by the data acquisition equipment to the virtual layer.
The virtual layer includes a control module, field device data, and a digital model. The control module comprises a planning and scheduling module, an operation scheduling module, a scheduling simulation module, a field information acquisition module and a twin data fusion module. The plan scheduling module performs scheduling or manual scheduling on initially imported personnel, sectional information or an initial scheduling plan by using an intelligent algorithm, transmits the scheduling plan after scheduling to the scheduling simulation module and the operation scheduling module, and transmits the generated scheduling plan to external digital simulation software for simulation and optimization.
And the operation scheduling module issues an instruction to the site to implement scheduling. The scheduling simulation module transmits simulation data to the planning and scheduling module in real time, and the planning and scheduling module transmits control commands to the job scheduling module in real time. The field information acquisition module acquires field data and transmits the field data to the twin data fusion module, and the twin data fusion module fuses and analyzes the acquired data and the simulation data. The digital model maps the physical characteristic parameters of the scheduling entity object. And the field information acquisition module issues an information acquisition instruction and data acquisition equipment for the physical layer through the information layer. And the data fusion module analyzes and fuses the data of the acquired information uploaded by the physical layer.
When the stock dump operation scheduling system works, a virtual process of digital simulation of ship segmental operation scheduling and an entity stock dump scheduling process are interacted in real time through twin data. The system comprises an information acquisition device, a virtual layer, a scheduling module, a job scheduling and simulation analysis module, a scheduling site, a process optimization module and a feedback control decision-making module, wherein the information acquisition device is arranged on an entity storage yard and used for acquiring various required information, the information is uploaded to the virtual layer in time through various communication devices of the communication layer, and the virtual layer analyzes and optimizes the scheduling of the entity storage yard according to data, so that the real-time monitoring on the parameters of the field device, the job process and the workers is realized.
In fig. 2, the specific steps of the scheduling method of the ship yard operation scheduling system based on twin data are as follows:
step 1, importing various information files of segments, fields and equipment and an initial storage yard information file acquired by an information acquisition module into a virtual information layer in a data table form through a data interaction interface; a plan scheduling module in the virtual layer selects manual scheduling or an intelligent algorithm to schedule plan scheduling according to the imported information file, and finally generates an initial segmental yard construction operation plan;
step 2, establishing a two-dimensional layout model and a three-dimensional dynamic model of required segments, fields, environments, workers and field devices in a scheduling simulation module based on technologies such as data-driven modeling simulation and the like, and dynamically simulating the processes of segment entering and leaving a storage yard in a virtual environment; software for constructing models and process Simulation comprises Quest, Unit 3D and Plant Simulation;
step 3, the scheduling personnel judges whether the simulation is reasonable, if the simulation process meets the requirements of the scheduling plan, the scheduling/scheduling scheme is allowed to be executed, and if the simulation result does not meet the requirements, the scheduling/scheduling scheme needs to be returned to the plan scheduling module or the operation scheduling module to modify the original plan;
step 4, the field information acquisition module issues an information acquisition instruction to data acquisition equipment of a physical layer through a communication layer; the method comprises the steps that a data acquisition device acquires field layout and other digital information, detects equipment operation conditions and segmented scheduling conditions, transmits the field acquisition information (segmented position information and equipment operation data) to a plan scheduling module, an operation scheduling module and a scheduling simulation module of a virtual layer, and serves as a data source for plan adjustment and simulation optimization;
and 5, judging whether abnormal conditions such as segment interference, plan delay and the like exist in the yard operation of the physical layer by the construction team according to the information collected by the field equipment, if not, indicating that the yard scheduling is finished, and if so, reconfiguring planning parameters (including segment piling position and yard entering and exiting date) for the operation scheduling system, and returning to the operation scheduling module of the virtual layer for rescheduling according to a certain strategy.
FIG. 3 is a schematic diagram of a model and a data flow of the twin data-based vessel yard operation scheduling system and method according to the present invention, wherein the system includes a physical entity, a virtual entity, a service system, and data interaction among the physical entity, the virtual entity, the service system, and the three. Wherein:
the physical entity corresponds to a system physical layer, which exists objectively, and generally consists of functional layers (such as an enterprise layer, a device layer, a yard operation layer and the like), and a specific task is completed through cooperation among the functional layers. Various sensors are deployed on physical entities, and the storage yard environment data, the running states of cranes and flat cars, the sectional dispatching condition and the like are monitored in real time.
The virtual entity is stored in a virtual layer of the system, is a digital mirror image of a physical entity, and comprises two-dimensional layout simulation and three-dimensional dynamic simulation, wherein the two-dimensional layout simulation mainly comprises accurate mapping of a ship yard and the surrounding environment, and comprises geometric parameters of the yard, segmented position parameters and the like. The three-dimensional dynamic simulation is an analog simulation of the whole process of the segmentation being scheduled.
The service system integrates various information systems such as scheduling, optimizing and service, and provides intelligent operation, accurate management and control and reliable operation and maintenance service based on the physical entity and the virtual model.
The twin data/model comprises relevant data of a physical entity, a virtual entity and a service system, domain knowledge and fusion data thereof, and is continuously updated and optimized along with the generation of real-time data. The twin data/model is the core driver of the digital twin operation. The four parts are connected in pairs, so that effective real-time data transmission is carried out, and real-time interaction is realized to ensure consistency and iterative optimization among the parts.
Claims (1)
1. A ship yard operation scheduling system based on twin data is characterized in that: the system comprises a physical layer, a communication layer and a virtual layer, wherein the communication layer is used as a bridge for connecting the physical layer and the virtual layer; twin models and data corresponding to the physical layer are constructed in the virtual layer; the physical layer collects field data and transmits the field data to the virtual layer through the communication layer; the virtual layer generates an initial field operation plan and an adjusted field operation plan according to the twin model and the acquired field data, issues the operation plan data to the physical layer through the communication layer, and manages and controls the field scheduling of the physical layer;
the physical layer comprises a yard, a building object, a building resource and data acquisition equipment which jointly form a physical world of the operation scheduling of the ship yard; the data acquisition equipment comprises RFID code scanning equipment and a video image acquisition device; the RFID code scanning equipment acquires time for entering and exiting a storage yard of the segments, segment stacking positions and geometric parameter data of the segments; monitoring the scheduling process condition and the segmentation interference condition data by the video image acquisition device; the physical layer is connected with the communication layer through a communication cable; the yard site comprises site scale, spatial layout and time distribution condition; building the object as a ship segment; the construction resources comprise assembly and welding robots, assembly and welding production lines, cranes, transport flat cars and yard sites;
each building object is provided with a corresponding RFID label which comprises a sectional code, weight, size, sectional entrance and exit time and sectional actual field position information; each yard site is provided with a corresponding RFID tag which comprises site size information, hoisting capacity information, welding capacity information and yard layout information of the yard; the site layout information of the storage yard comprises spatial layout and time distribution;
the construction resources comprise hoisting equipment, a flat trolley, welding equipment and construction teams, and the construction resources are provided with corresponding RFID radio frequency acquisition systems, multi-view stereoscopic vision acquisition systems and network communication modules, so that the acquisition and monitoring of the working capacity, the real-time position and the equipment fault state of the construction resources are realized; the RFID data collector adopts a fixed or movable data collector, and the network communication module adopts a WIFI or Bluetooth module;
the communication layer comprises communication equipment, and the communication equipment is connected with the data acquisition equipment of the communication layer through a CAN bus, an OPC bus and a Modbus respectively; the communication equipment is connected with the virtual layer through a network at the same time, and transmits the data acquired by the data acquisition equipment to the virtual layer;
the virtual layer comprises a control module, field device data and a digital model; the control module comprises a planning and scheduling module, an operation scheduling module, a scheduling simulation module, a field information acquisition module and a twin data fusion module; the plan scheduling module performs scheduling or manual scheduling on initially imported personnel, sectional information or an initial scheduling plan by using an intelligent algorithm, transmits the scheduling plan after scheduling to the scheduling simulation module and the operation scheduling module, and transmits the generated scheduling plan to external digital simulation software for simulation and optimization;
the job scheduling module issues an instruction to the site for scheduling; the scheduling simulation module transmits simulation data to the planning and scheduling module in real time, and the planning and scheduling module transmits a control command to the job scheduling module in real time; the field information acquisition module acquires field data and transmits the field data to the twin data fusion module, and the twin data fusion module fuses and analyzes the acquired data and the simulation data; the digital model maps the physical characteristic parameters of the scheduling entity object; the field information acquisition module issues an information acquisition instruction and data acquisition equipment to the physical layer through the information layer; the data fusion module analyzes and fuses data of the acquired information uploaded by the physical layer;
when the stock dump operation scheduling system works, the digitalized simulation virtual process and the entity stock dump scheduling process of ship section operation scheduling are interacted in real time through twin data; various required information is acquired through information acquisition equipment installed in the entity storage yard and is timely uploaded to the virtual layer through various communication equipment of the communication layer, and the virtual layer analyzes and optimizes the entity storage yard scheduling according to data, so that the real-time monitoring of field equipment parameters, an operation process and workers is realized;
the twin data-based scheduling method of the ship yard operation scheduling system comprises the following specific steps:
step 1, importing various information files of segments, fields and equipment and an initial storage yard information file acquired by an information acquisition module into a virtual information layer in a data table form through a data interaction interface; a plan scheduling module in the virtual layer selects manual scheduling or an intelligent algorithm to schedule plan scheduling according to the imported information file, and finally generates an initial segmental yard construction operation plan;
step 2, establishing a two-dimensional layout model and a three-dimensional dynamic model of required sections, fields, environments, workers and field devices in a dispatching simulation module based on a data-driven modeling simulation technology, and dynamically simulating the processes of entering and exiting the sections into and out of a storage yard in a virtual environment; software for constructing models and process Simulation comprises Quest, Unit 3D and Plant Simulation;
step 3, the scheduling personnel judges whether the simulation is reasonable, if the simulation process meets the requirements of the scheduling plan, the scheduling/scheduling scheme is allowed to be executed, and if the simulation result does not meet the requirements, the scheduling/scheduling scheme needs to be returned to the plan scheduling module or the operation scheduling module to modify the original plan;
step 4, the field information acquisition module issues an information acquisition instruction to data acquisition equipment of a physical layer through a communication layer; the method comprises the following steps that a data acquisition device acquires field layout digital information, detects the running condition of the device and the sectional scheduling condition, transmits the field acquisition information to a plan scheduling module, an operation scheduling module and a scheduling simulation module of a virtual layer, and serves as a data source for plan adjustment and simulation optimization; the field acquisition information is sectional position information and equipment operation data;
step 5, judging whether the yard operation of the physical layer has the conditions of subsection interference and abnormal planning delay by a construction team according to the information collected by the field equipment, if not, indicating that the yard scheduling is finished, and if so, reconfiguring the planning parameters of the operation scheduling system, and returning to the operation scheduling module of the virtual layer for rescheduling according to a certain strategy; the reconfiguration plan parameters include the segment heap and the in and out yard dates.
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