CN117806248A - Information model construction method, device and storage medium of process control system - Google Patents
Information model construction method, device and storage medium of process control system Download PDFInfo
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Abstract
The invention discloses an information model construction method, device and storage medium of a process control system. Wherein the method comprises the following steps: acquiring system structure data and system application data of a process control system, wherein the system structure data is used for representing structural data of the process control system, and the system application data is used for representing data generated by the process control system in an actual application scene; creating an information model namespace of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices; and converting the system structure data and the system application data based on the namespaces to obtain an information model of the process control system. The invention solves the technical problem of poor universality of a plurality of types of process control systems from different manufacturers and different devices due to the fact that a plurality of protocols and standards exist between different devices and manufacturers.
Description
Technical Field
The present invention relates to the field of industrial automation, and in particular, to a method, an apparatus, and a storage medium for constructing an information model of a process control system.
Background
The data exchange and information sharing from the process control layer to the manufacturing execution system layer or the business management layer are important links for realizing the integration of industrial automation and informatization and meeting the requirement of the digitalized transformation of the enterprise management layer, however, the control system data and the semantics are open due to the fact that a plurality of protocols and standards exist between different devices and manufacturers.
In order to solve the problem of opening the control system data and semantics, the OPCDA/AE (Ole for Process Control Data Access/Alarms and Events, process control data access/alarm and event) protocol may be used to implement data exchange between automation devices of different vendors, but the protocol can only open real-time data or alarms, and cannot open more process control system information. The MQTT (Message Queuing Telemetry Transport, message queue telemetry transport) protocol may also be used for data transfer between devices, although any type of data may be transferred, but is only directed to a single type of process control system and does not have the versatility of process control system domain models and semantics. Thus, how multiple types of process control systems from different vendors and different devices exchange data with the upper layer system remains a problem in achieving versatility in the process control system domain model and semantics.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides an information model construction method, an information model construction device and a storage medium of a process control system, which at least solve the technical problem that the universality of a plurality of types of process control systems from different manufacturers and different devices is poor due to the fact that a plurality of protocols and standards exist between different devices and manufacturers.
According to an aspect of an embodiment of the present invention, there is provided an information model construction method of a process control system, including: acquiring system structure data and system application data of a process control system, wherein the system structure data is used for representing structural data of the process control system, and the system application data is used for representing data generated by the process control system in an actual application scene; creating an information model namespace of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices; and converting the system structure data and the system application data based on the namespaces to obtain an information model of the process control system.
Optionally, obtaining system configuration data for a process control system includes: acquiring a plurality of system objects of a process control system and control logic of the process control system; extracting attribute information and variable information of a plurality of system objects and association relations among the plurality of system objects; system configuration data is generated based on the attribute information, the variable information, the association relationship, and the control logic.
Optionally, obtaining system application data for a process control system includes: acquiring an application scene, an application instance and an application flow of a process control system; and generating system application data based on the application scene, the application instance and the application flow.
Optionally, creating an information model namespace for the process control system based on the information model framework includes: determining a control station type, a controller type and a communication module type of a process control system based on an information model framework, wherein the control station type comprises a control loop of the process control system; determining a control system hardware type of the process control system based on the control station type, the controller type and the communication module type; determining a control component type of the process control system based on the control loop type of the control loop; an information model namespace is created based on the control system hardware type and the control component type.
Optionally, the method further comprises compiling the information model based on the information model standard of the information model framework to obtain a model class library of the information model; instantiating the model class library according to a plurality of devices corresponding to the process control system to obtain an instantiated object of the plurality of devices, wherein the plurality of devices are used for representing the devices connected with the process control system; and aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices.
Optionally, aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices, including obtaining device namespaces of the plurality of devices; encoding the instantiation object based on the equipment name space and the running nodes of the plurality of equipment to obtain the identification information of the instantiation object; and aggregating the instantiation objects based on the identification information to obtain the equipment information model.
Optionally, encoding the instantiation object based on the device namespace and the running nodes of the plurality of devices to obtain identification information of the instantiation object, including obtaining a node type of the running node; if the node type is used for indicating that the operation node is in an automatic allocation mode, encoding the instantiation object based on the equipment name space and the node name of the operation node to obtain identification information, wherein the automatic allocation mode is used for indicating a mode of automatically allocating the instantiation object to the operation node according to the operation states of a plurality of pieces of equipment; if the node type is used for indicating that the operation node is in a fixed mode, the instantiation object is encoded based on the node name of the operation node to obtain the identification information, wherein the fixed mode is used for indicating a mode of fixed setting of the instantiation object of the operation node.
According to another aspect of the embodiment of the present invention, there is provided an information model construction apparatus of a process control system, including: the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring system structure data and system application data of a process control system, the system structure data is used for representing the structured data of the process control system, and the system application data is used for representing the data generated by the process control system in an actual application scene; the system comprises a creation module, a process control module and a control module, wherein the creation module is used for creating an information model naming space of the process control system based on an information model framework, and the information model framework is used for unifying data representations among different devices; and the conversion module is used for converting the system structure data and the system application data based on the name space to obtain an information model of the process control system.
According to a third aspect of embodiments of the present invention, there is also provided a computer readable storage medium comprising a stored program, wherein the information model construction method of the above-described process control system in a processor of a device in which the program is controlled when running.
According to a fourth aspect of an embodiment of the present invention, there is also provided an electronic device including: one or more processors; a storage means for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the information model construction method of the process control system described above.
In the embodiment of the invention, system structure data and system application data of a process control system are acquired, wherein the system structure data is used for representing the structured data of the process control system, and the system application data is used for representing the data generated by the process control system in an actual application scene; creating an information model namespace of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices; the method comprises the steps of converting system structure data and system application data based on a naming space to obtain an information model of a process control system, creating the information model naming space of the process control system based on an information model framework by obtaining the system structure data and the system application data of the process control system, and converting the system structure data and the system application data based on the naming space, so that the aim of constructing a universal information model of the process control system is fulfilled, the differences of a plurality of protocols and standards existing between different equipment and manufacturers are achieved, the technical effect of universality of a plurality of types of process control systems from different manufacturers and different equipment is improved, and the technical problem that the differences of the protocols and the standards exist between different equipment and manufacturers, so that the universality of the plurality of types of process control systems from different manufacturers and different equipment is poor is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method of information model construction for a process control system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of an example of an alternative process control system information model in accordance with an embodiment of the present invention;
FIG. 3 is an overall flow diagram of an alternative process control system information modeling in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart of modeling an alternative process control system information model in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of the overall structure of an alternative process control system information model in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of an information model building apparatus of a process control system according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of an information model construction method for a process control system, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and that although a logical sequence is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in a different order than what is illustrated herein.
FIG. 1 is a flow chart of a method of information model construction for a process control system, according to an embodiment of the present invention, as shown in FIG. 1, the method comprising the steps of:
step S102, system structure data and system application data of the process control system are obtained, wherein the system structure data is used for representing structural data of the process control system, and the system application data is used for representing data generated by the process control system in an actual application scene.
The process control system in the above steps is an automated system for monitoring, controlling and optimizing industrial processes. Typically consisting of sensors, actuators, controllers, and human-machine interfaces. Process control systems are widely used in a variety of industries including, but not limited to, chemical, petroleum, manufacturing, and energy to improve production efficiency, quality, and safety. System configuration data is data that characterizes concepts, relationships, attributes, and events in a process control system, and is based on provider perspectives. The system application data is used for representing data related to business boundaries, use cases and use case flows, which are generated by a user when using the process control system, and is based on the view angle of the user. Structured data refers to data organized according to certain rules and formats, which facilitates storage, processing and analysis of the data.
In an alternative embodiment, concepts, relationships, attributes, events within a process control system are first analyzed and abstracted based on a provider perspective, and related data is structured to obtain system structure data. And then describing service boundaries, use cases and use case flows of the user when using the process control system based on the view angle of the user, and carrying out induction summarization processing on the data to obtain system application data. The use cases and the force flows of the user are fully considered in the information model modeling process, so that the use interaction experience and efficiency of the final model can be effectively improved.
Step S104, creating an information model namespace of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices.
The information model namespaces in the steps are used for standardized description of naming in different process control systems, and are the basis for realizing data and semantic openness of the process control systems. An information model framework is a standardized framework for defining and describing data models in industrial automation systems that represent, exchange, and interpret data between different vendors, devices, and systems in a unified manner. The system provides a basic type system, and allows a user to define and customize a data model according to specific requirements so as to adapt to requirements of different application scenes.
In an alternative embodiment, an information model framework is first determined, an appropriate information model framework can be selected according to specific application scenarios and requirements, the information model framework can select a cross-platform communication architecture OPC UA (OLE for Process Control Unified Architecture, process control unified architecture) capable of enabling different devices, systems and application programs to perform Data exchange and integration seamlessly, or can select a standardized communication protocol OPC XML-DA (OLE for Process ControlXML-Data Access) based on XML (Extensible Markup Language ) for transmitting Data in an industrial automation system, and then an information model namespace is constructed based on the information model framework, so as to represent Data between different devices in a unified manner. The information model namespaces may include hardware subtypes of the process control system, static attributes, and real-time dynamically changing variables, but are not limited thereto.
And step S106, converting the system structure data and the system application data based on the name space to obtain an information model of the process control system.
In the above steps, the information model defines how data is represented and exchanged in a given domain, and the structure and semantics between the data, and is used to describe and organize abstract representations of data, entities, attributes and relationships between them within a particular domain, enabling the opening of data and semantics in a process control system.
In an alternative embodiment, the data type, variable type, object relationship, alarm event type of the process control system is first defined based on the namespace and the acquired system configuration data and system application data and stored in an information framework model node file. And then converting the information frame model node file into an information model of the process control system by combining the abstracted system structure data, the system application data and the selected information model frame.
In the embodiment of the invention, system structure data and system application data of a process control system are acquired, wherein the system structure data is used for representing the structured data of the process control system, and the system application data is used for representing the data generated by the process control system in an actual application scene; creating an information model namespace of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices; the method comprises the steps of converting system structure data and system application data based on a naming space to obtain an information model of a process control system, creating an information model naming space of the process control system based on an information model framework, and converting the system structure data and the system application data based on the naming space, so that the purpose of building a universal information model of the process control system is achieved, the technical effects that a plurality of types of process control systems from different manufacturers and different devices can realize data opening and semantic opening towards an upper system are achieved, and the technical problem that the universality of a plurality of types of process control systems from different manufacturers and different devices is poor due to the fact that a plurality of protocols and standards exist between different devices and manufacturers is solved.
Optionally, obtaining system configuration data for a process control system includes: acquiring a plurality of system objects of a process control system and control logic of the process control system; extracting attribute information and variable information of a plurality of system objects and association relations among the plurality of system objects; system configuration data is generated based on the attribute information, the variable information, the association relationship, and the control logic.
The system objects in the above steps refer to various entities managed and controlled in the process control system, and may be specific entities or abstract concepts, including but not limited to software and hardware structures, operation states, diagnostic states, and system alarms. Control logic is used to characterize a control strategy in a process control system and may be applied to a number of control components of the process control system including, but not limited to, function blocks, control loops, and process variables. The attribute information is used to characterize the characteristics of the system object. The variable information is related information for describing a variable of the system object. The association relationship is used to characterize the relationship between the different system objects. System configuration data is data that is used to describe a process control system and is organized according to certain rules and formats.
In an alternative embodiment, a plurality of system objects of the process control system are first acquired, then the system objects are analyzed, attribute information and variable information of the system objects are extracted, and an arrangement generalization is performed. And then analyzing and abstracting the relation among the system objects to acquire the association relation among the system objects. And summarizing control logic in the process control system according to the control relation on the control component, and carrying out structuring processing on the data and the relation based on the attribute information, the variable information, the association relation and the control logic to obtain system structured data.
Optionally, obtaining system application data for a process control system includes: acquiring an application scene, an application instance and an application flow of a process control system; and generating system application data based on the application scene, the application instance and the application flow.
The application scenario in the above steps refers to the application and use situation of the process control system in a specific environment, situation or field, and in different scenarios, the process application system may have different requirements and performances. An application instance refers to a specific application case of a process control system in an application scenario. An application flow refers to the steps that complete a particular operation when using a process control system.
In an alternative embodiment, the application scenario of the process control system is obtained by analyzing from the perspective of the application side of the process control system, and the application process is abstracted by summarizing the application instance according to the actual application process of the process control system. And then determining the business boundary of the process control system application according to the application scene, and generating system application data by combining the description of the application instance and the application flow.
Optionally, creating an information model namespace for the process control system based on the information model framework includes: determining a control station type, a controller type and a communication module type of a process control system based on an information model framework, wherein the control station type comprises a control loop of the process control system; determining a control system hardware type of the process control system based on the control station type, the controller type and the communication module type; determining a control component type of the process control system based on the control loop type of the control loop; an information model namespace is created based on the control system hardware type and the control component type.
The types of control stations in the steps above are used to characterize the types of control stations that are central to the control system and that can monitor and control the status of the process control system. The controller type is used to characterize the type of controller, which may be a separate device or an electronic control unit integrated within the device, which responds to control actions under the direction of the control station. The communication module type is used to characterize the type of communication module used to implement communication of the process control system. The control station type, the controller type and the communication module type are determined according to the information model framework. The main hardware of the control system comprises a control station, a controller and a communication module, wherein the hardware type of the control system can be characterized by the type of the control station, the type of the controller and the type of the communication module. The control loop type is used to characterize the type of control loop, which may determine the type of control component. The control component type is used to characterize the type of control component, which is a component for implementing a specific control function, the type of which is determined by the control loop type.
In an alternative embodiment, first, a control station type, a controller type, and a communication module type of a process control system are determined from an information model framework, wherein the control station type includes, but is not limited to, a hardware address, a number, a manufacturer, a device model, a device type, a device health status, a controller, a communication module, and a control loop. The controller corresponds to the controller type, the communication module corresponds to the communication module type, and the control loop corresponds to the control loop type. The control component type may then be determined based on the control loop type, and the control system hardware type may be determined based on the control station type, the controller type, and the communication module type. Finally, a namespace for the information model is created based on the control system hardware type and the control component type.
Optionally, the method further comprises compiling the information model based on the information model standard of the information model framework to obtain a model class library of the information model; instantiating the model class library according to a plurality of devices corresponding to the process control system to obtain an instantiated object of the plurality of devices, wherein the plurality of devices are used for representing the devices connected with the process control system; and aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices.
The model class library in the step is obtained by compiling the information model, and can be directly accessed and called when the process control system is communicated with other systems so as to realize communication among different types of systems. Instantiation objects refer to specific instances of a model class library generated from a specific device. The device information model is a model which is obtained by aggregating a plurality of real-world objects and contains a plurality of device instance information.
In an alternative embodiment, first, according to an information model standard of an information model framework, an information model is compiled to obtain a model class library, and then a plurality of device information corresponding to a process control system is collected to instantiate the model class library. Because the specific device models of the equipment are different, partial differences often exist from a standard information model, and the differences generally accord with the twenty-eight principle, namely twenty percent are differential parts and eighty percent are universal parts. During instantiation, the differencing portion may be handled using an OPCUAServer (Open Platform Communications Unified Architecture Server, open platform communication unified architecture server) deployed on the device. The OPCUAServer may create a runtime device namespace for storing instance objects, define and store unique types of devices in the device namespace after inheriting generic types in the process control system information model, and perform type isolation through the namespace to avoid type conflicts. The unique types of devices defined by OPCUAServer together with the generic types in the information model constitute an instance of the device. And then aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices.
Optionally, aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices, including obtaining device namespaces of the plurality of devices; encoding the instantiation object based on the equipment name space and the running nodes of the plurality of equipment to obtain the identification information of the instantiation object; and aggregating the instantiation objects based on the identification information to obtain the equipment information model.
The device namespaces in the above steps are created by OPCUAServer to store all types of spaces for instantiation objects. The identification information is information for identifying an instantiation object corresponding to a device, and can uniquely identify the device in a full plant-level object topology. The device information model is a model obtained by aggregating a plurality of instantiation objects based on the representation information.
In an alternative embodiment, the device namespaces of the plurality of devices are first obtained, and then the path codes of the plurality of device running nodes are obtained, wherein the path codes are composed of each node code from the current node to the root node thereof. And then encoding the instantiation object based on the equipment name space and the running nodes of the plurality of equipment, combining the equipment name space with the path codes of the equipment nodes, and performing hash encoding operation to obtain the identification of the instantiation object, thereby uniquely identifying the equipment and preventing confusion caused by identical numbers of the running nodes of the equipment. And finally, aggregating the instantiation objects based on the identification information, covering the factory topology, and obtaining the equipment information model.
Optionally, encoding the instantiation object based on the device namespace and the running nodes of the plurality of devices to obtain identification information of the instantiation object, including obtaining a node type of the running node; if the node type is used for indicating that the operation node is in an automatic allocation mode, encoding the instantiation object based on the equipment name space and the node name of the operation node to obtain identification information, wherein the automatic allocation mode is used for indicating a mode of automatically allocating the instantiation object to the operation node according to the operation states of a plurality of pieces of equipment; if the node type is used for indicating that the operation node is in a fixed mode, the instantiation object is encoded based on the node name of the operation node to obtain the identification information, wherein the fixed mode is used for indicating a mode of fixed setting of the instantiation object of the operation node.
In an alternative embodiment, firstly, the node type of the operation node is obtained, if the node type is a numerical value, the operation node is indicated to be in an automatic allocation mode, the operation node is recoded based on the equipment name space and the node name of the operation node, the identification information generation operation of the instantiation object is executed, the situation that the operation node name cannot be corresponding due to the automatic allocation mode of the operation node is avoided, and the uniqueness of the instantiation object in the whole plant topology is ensured. If the node type is not a numerical value, the operation node is in a fixed mode, the node name is not changed, and the instantiation object is encoded based on the node name of the operation node to obtain identification information.
Turning now to the detailed description of a preferred embodiment of the present invention, FIG. 2 is a schematic diagram of an example of an alternative process control system information model in accordance with an embodiment of the present invention; as shown in FIG. 2, the information model framework imported as default in the first namespace includes a basic object type, a topology element type and a component type, and the first namespace address may be http:// xxa. Org/UA/(a specific address). The second namespace, which may be http:// xxb.com/PCS/UA (a specific web site), represents the newly-built process control system information module, wherein the control system hardware type and the control component type inherit from the component types in the information model framework. The control system hardware types also include a range of control system hardware sub-types, namely, a control station type, a controller type, and a communication module type. Wherein the control station type contains static attributes: hardware address, number, manufacturer, equipment model, equipment type, also contain real-time dynamically changing variables: the device health status, further comprising a series of child object instances: the system comprises a controller, a communication module and a control loop. The controller type in the control system hardware subtype corresponds to the controller in the sub-object instance, the communication module type in the control system hardware subtype corresponds to the communication module in the sub-object instance, and the control loop type in the control system hardware subtype corresponds to the control loop in the sub-object instance.
FIG. 3 is an overall flow diagram of an alternative process control system information model creation, as shown in FIG. 3, requiring information modeling, model compilation, instantiation operations of the information model at the process control layer, aggregation operations of the instantiated information model at the manufacturing execution layer, and specific application of the information model in accordance with an embodiment of the present invention. Firstly, a process control layer carries out information modeling to obtain an information model, then carries out model compiling, compiles the model into a model class library, then carries out instantiation, loads the model class library and creates model examples of different devices. The aggregation of model instances is then performed at the execution manufacturing level, expanding the model instance of a single device to the model instance of the whole plant, the process plant topology, and applications can be performed, participating in read, write, subscribe and event notification operations.
FIG. 4 is a flow chart of modeling an alternative process control system information model according to an embodiment of the invention, as shown in FIG. 4, during the analysis phase, the system application is first analyzed from the user's perspective, advanced business boundary determination is performed, and then use case description and flow description are performed, thereby obtaining system configuration data. And then analyzing the system structure from the perspective of a provider, firstly analyzing the system objects, then analyzing and abstracting the relation among the system objects, then extracting the variables and the attributes of the system objects, and then analyzing the system alarms and events, thereby obtaining the system application data. After analysis, the modeling phase is entered, an information model framework is introduced to create a namespace, then data types are defined, then variable types are defined, then object types and relationships are defined, and finally alarm and event types are defined, thus generating an information model of the process control system.
FIG. 5 is a schematic diagram of the overall structure of an alternative process control system information model according to an embodiment of the present invention, where, as shown in FIG. 5, the objects of the information model of the process control system include domains, system software, system hardware, operation stations, control stations, controllers, communication modules and input/output modules, where the operation stations can operate the system software and the system hardware, the control stations can control the system hardware, the controllers and the communication modules, and the control stations, the controllers and the communication modules together form a control system to control the objects in the overall information model. The communication module can realize the communication between the input/output module and the information model, and the system hardware can send out the system alarm event. The control strategy comprises a control component, the control component comprises a functional block, a control loop and a process variable, the functional block, the control loop and the process variable are mutually matched to jointly realize a control function, and the control component can send out a process alarm event. The external system comprises a field instrument and a device, the control component can control the device of the external system, the input/output module can interact with the field instrument, and the field instrument can send out an instrument alarm event.
Example 2
According to another aspect of the embodiment of the present invention, there is further provided an information model construction apparatus for a process control system, where the apparatus may perform the information model construction method for a process control system provided in the foregoing embodiment 1, and a specific implementation manner and a preferred application scenario are the same as those of the foregoing embodiment 1, and are not described herein.
FIG. 6 is a schematic diagram of an information modeling apparatus of a process control system, according to an embodiment of the present invention, as shown in FIG. 6, including:
the acquiring module 60 is configured to acquire system configuration data and system application data of the process control system, where the system configuration data is used to represent structural data of the process control system, and the system application data is used to represent data generated by the process control system in an actual application scenario.
A creation module 62 is used to create an information model namespace for the process control system based on an information model framework that is used to unify data representations between different devices.
The transformation module 64 is configured to transform the system configuration data and the system application data based on the namespaces to obtain an information model of the process control system.
Optionally, the acquiring module includes: a first acquisition unit configured to acquire a plurality of system objects of a process control system and control logic of the process control system; an extracting unit for extracting attribute information and variable information of a plurality of system objects and association relations among the plurality of system objects; and the first generation unit is used for generating system structure data based on the attribute information, the variable information, the association relation and the control logic.
Optionally, the obtaining module further includes: the second acquisition unit is used for acquiring an application scene, an application instance and an application flow of the process control system; and the second generation unit is used for generating system application data based on the application scene, the application instance and the application flow.
Optionally, the creating module includes: a first determining unit configured to determine a control station type, a controller type, and a communication module type of a process control system based on an information model framework, wherein the control station type includes a control loop of the process control system; a second determining unit for determining a control system hardware type of the process control system based on the control station type, the controller type and the communication module type; a third determination unit for determining a control component type of the process control system based on a control loop type of the control loop; and the creation unit is used for creating an information model name space based on the control system hardware type and the control component type.
Optionally, the conversion module further comprises: the compiling unit is used for compiling the information model based on the information model standard of the information model framework to obtain a model class library of the information model; an instantiation unit, configured to instantiate a model class library according to a plurality of devices corresponding to a process control system, to obtain an instantiation object of the plurality of devices, where the plurality of devices are used to represent devices connected to the process control system; the aggregation unit is used for aggregating the instantiation objects of the plurality of devices to obtain device information models of the plurality of devices.
Optionally, the aggregation unit is further configured to obtain device namespaces of the plurality of devices; encoding the instantiation object based on the equipment name space and the running nodes of the plurality of equipment to obtain the identification information of the instantiation object; and aggregating the instantiation objects based on the identification information to obtain the equipment information model.
Optionally, the aggregation unit is further configured to obtain a node type of the running node; if the node type is used for indicating that the operation node is in an automatic allocation mode, encoding the instantiation object based on the equipment name space and the node name of the operation node to obtain identification information, wherein the automatic allocation mode is used for indicating a mode of automatically allocating the instantiation object to the operation node according to the operation states of a plurality of pieces of equipment; if the node type is used for indicating that the operation node is in a fixed mode, the instantiation object is encoded based on the node name of the operation node to obtain the identification information, wherein the fixed mode is used for indicating a mode of fixed setting of the instantiation object of the operation node.
Example 3
According to an embodiment of the present invention, there is also provided a computer-readable storage medium, including a stored program, where a device on which the computer-readable storage medium is controlled to execute the information model construction method of the process control system in the above embodiment 1 when the program runs.
Example 4
According to an embodiment of the present invention, there is also provided an electronic device including one or more processors, and further including a storage device for storing one or more programs, which when executed by the one or more processors, cause the one or more processors to perform the information model construction method of the process control system in embodiment 1 described above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. An information model construction method of a process control system, comprising:
acquiring system structure data and system application data of a process control system, wherein the system structure data is used for representing structural data of the process control system, and the system application data is used for representing data generated by the process control system in an actual application scene;
creating an information model namespace for the process control system based on an information model framework, wherein the information model framework is used to unify data representations between different devices;
and converting the system structure data and the system application data based on the name space to obtain an information model of the process control system.
2. The method of claim 1, wherein obtaining system configuration data for a process control system comprises:
Acquiring a plurality of system objects of the process control system and control logic of the process control system;
extracting attribute information and variable information of the plurality of system objects and association relations among the plurality of system objects;
the system configuration data is generated based on the attribute information, the variable information, the association relationship, and the control logic.
3. The method of claim 1, wherein obtaining system application data for a process control system comprises:
acquiring an application scene, an application instance and an application flow of the process control system;
and generating the system application data based on the application scene, the application instance and the application flow.
4. The method of claim 1, wherein creating an information model namespace for the process control system based on an information model framework comprises:
determining a control station type, a controller type, and a communication module type of the process control system based on the information model framework, wherein the control station type includes a control loop of the process control system;
determining a control system hardware type of the process control system based on the control station type, the controller type, and the communication module type;
Determining a control component type of the process control system based on a control loop type of the control loop;
the information model namespaces are created based on the control system hardware type and the control component type.
5. The method according to claim 1, wherein the method further comprises:
compiling the information model based on the information model standard of the information model framework to obtain a model class library of the information model;
instantiating the model class library according to a plurality of devices corresponding to the process control system to obtain an instantiated object of the plurality of devices, wherein the plurality of devices are used for representing devices connected with the process control system;
and aggregating the instantiation objects of the plurality of devices to obtain device information models of the plurality of devices.
6. The method of claim 5, wherein aggregating the instantiation objects of the plurality of devices to obtain a device information model of the plurality of devices, comprises:
acquiring device namespaces of the plurality of devices;
encoding the instantiation object based on the equipment name space and the running nodes of the plurality of equipment to obtain the identification information of the instantiation object;
And aggregating the instantiation objects based on the identification information to obtain the equipment information model.
7. The method of claim 6, wherein encoding the instantiation object based on the device namespace and the operational nodes of the plurality of devices to obtain the identification information of the instantiation object comprises:
acquiring the node type of the operation node;
if the node type is used for indicating that the operation node is in an automatic allocation mode, encoding the instantiation object based on the equipment name space and the node name of the operation node to obtain the identification information, wherein the automatic allocation mode is used for indicating a mode of automatically allocating the instantiation object to the operation node according to the operation states of the plurality of equipment;
and if the node type is used for indicating that the operation node is in a fixed mode, encoding the instantiation object based on the node name of the operation node to obtain the identification information, wherein the fixed mode is used for indicating a mode of fixed setting of the instantiation object of the operation node.
8. An information model construction apparatus of a process control system, comprising:
The system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring system structure data and system application data of a process control system, the system structure data is used for representing the structured data of the process control system, and the system application data is used for representing the data generated by the process control system in an actual application scene;
the creation module is used for creating an information model naming space of the process control system based on an information model framework, wherein the information model framework is used for unifying data representations among different devices;
and the conversion module is used for converting the system structure data and the system application data based on the name space to obtain an information model of the process control system.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the information model construction method of the process control system of any one of claims 1 to 7 is performed in a processor of a device in which the program is controlled to run.
10. An electronic device, comprising:
one or more processors;
a storage means for storing one or more programs;
The one or more programs, when executed by the one or more processors, cause the one or more processors to perform the information model construction method of the process control system of any of claims 1 to 7.
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