CN115065697A - Industrial network equipment information integration system and method based on OPC UA - Google Patents
Industrial network equipment information integration system and method based on OPC UA Download PDFInfo
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Abstract
The invention discloses an industrial network equipment information integration system and method based on OPC UA, relating to the technical field of industrial networks, comprising an information control layer, an information integration layer and a field equipment layer; the information control layer calls the network equipment integration information and sends a corresponding control instruction to the network control end; the information integration layer is used for carrying out information collection and information classification layering on the field equipment; the information integration layer is also responsible for updating and detecting the state of the network equipment and periodically updating the integrated information database; and the field device layer comprises various production line terminal devices in a production field and other network basic device devices which are interconnected through an industrial communication network. The invention aims to design an information integration scheme based on a set of industrial network equipment, solve the problems of diversification and difficult intercommunication of the information of the industrial network equipment, ensure the compatibility of the information integration scheme and meet the high-efficiency information integration requirement of a large-scale complex industrial network.
Description
Technical Field
The invention relates to the technical field of industrial networks, in particular to an information integration system and method of industrial network equipment based on OPC UA.
Background
With the deepening of the intelligent manufacturing concept and the continuous development of the intelligent factory, the industrial manufacturing field tends to realize large-scale industrial production in a highly flexible and integrated manner, wherein the interconnection of all elements of the production flow becomes the key for efficient manufacturing and unified management and control. However, in the process of transforming the traditional industry to intelligent production in China, new and old industrial equipment interfaces are incompatible and the production flow solidification is difficult to adjust, so that the problems of different production data, mutual exclusion of production information and the like are caused. Under a complex industrial production scene, the diversified heterogeneous network devices bring obstacles to the interconnection and intercommunication of production data, various production line terminal devices and intermediate network devices cause complicated network configuration processes, difficult cooperation among the devices and difficult information sharing, and the necessity of information integration of the heterogeneous network devices under a large-scale industrial production process is fully explained.
In order to realize the unification management and control and semantic interoperation of equipment in flexible production of an intelligent factory and support the full-factor interconnection under a complex production scene, a set of flexible and efficient information integration scheme is needed, and the information standardization of heterogeneous equipment across platforms and networks is supported, so that the convenient network management and equipment operation are promoted, the compatibility and diversity of industrial services are improved, and a foundation support is provided for an upper-layer building of the intelligent factory.
OPC UA (OPC Unified Architecture) expands the application platform of the conventional OPC, defines a Unified data and service model, and is a service-based, cross-platform solution. The information integration recommendation technology standard for manufacturing 2025 in China has a mature technical ecological environment, has the advantages of platform independence, expansibility and the like, and supports information standardization operation of various industrial equipment, so that the information integration recommendation technology standard becomes a first choice of an information integration technology in industrial production.
Through retrieval and investigation, the domestic patent with the application number of 201811024091.7 is named as 'an information integration system and method based on OPC UA', information of each PLC device is stored through the OPC UA server, a control layer accesses the OPC UA server by adopting the OPC UA standard, information integration of multiple heterogeneous devices is realized, but the information integration system only faces to a workshop PLC controller, is lack of universality and flexibility and does not support large-scale complex heterogeneous network scenes; the domestic patent with the application number of 202010839045.3 is named as an OPC UA information modeling method and device based on an equipment component module, and analyzes the operation principle of equipment and divides the physical component structure of the equipment according to OPC UA modeling specifications so that the equipment can comprehensively and truly reflect equipment information, thereby accurately constructing an equipment information model, but mainly focuses on the equipment information modeling process and does not describe in detail the integration mode and method of various equipment information in the whole industrial production system; the domestic patent with the name of 202110183591.0 is a patent of 'a system and a method for remotely configuring equipment of a flexible manufacturing production line based on OPC UA', wherein the OPC UA is used as a core architecture of a configuration system, an information model and an operation mode are unified on a data layer, and the information model and the communication mode of the OPC UA are utilized to realize bidirectional transmission of information, but the system is only aimed at terminal production equipment of the flexible manufacturing production line, does not provide technical support for information integration of various network equipment under an industrial production environment, and has certain limitation; the name of the domestic patent application number of 202010496813.X is a patent of 'a longitudinal integration gateway of edge device of production line based on OPC UA and an implementation method thereof', information modeling is performed on the edge device of production line based on OPC UA, and model nodes, bottom layer data and interfaces are subjected to associated mapping, so that a device data interface is unified, but information management and data transmission of the edge device of production line are realized only by utilizing OPC UA, further information integration and topology analysis are not performed on an entire industrial network, and efficient management and control on large-scale industrial network devices cannot be realized.
Therefore, a person skilled in the art aims to design an information integration scheme based on a set of industrial network equipment, solve the problem of information diversification and difficult intercommunication of the industrial network equipment, ensure the compatibility of the information integration scheme, and meet the requirement of high-efficiency information integration of a large-scale complex industrial network.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problems to be solved by the present invention mainly include the following points:
1. how to design a set of industrial network equipment information integration scheme, can carry out information integration on all industrial field network equipment, and support large-scale multilayer networks and heterogeneous networks;
2. how to realize the high-efficient management and control of the integrated information of the network equipment, the information processing of the single network equipment is upgraded to the unified management of the whole network;
3. how to support the integration of conventional industrial equipment or lightweight equipment on the basis of applying an OPC UA service scheme.
In order to achieve the above object, the present invention provides an information integration system for industrial network devices based on OPC UA, which includes an information control layer, an information integration layer, and a field device layer;
the information control layer calls the network equipment integration information, coordinates equipment resources according to network control requirements and transmits equipment data instantiation objects to a network control end; the information control layer also analyzes the network state according to the integrated equipment information and performs corresponding resource management; the information control layer also sends a corresponding control instruction to the network control end according to the basic information or the updated information of the network equipment;
the information integration layer collects information of the field equipment, acquires and stores state information and control information of various equipment, and analyzes static attributes and functional attributes of the equipment so as to classify and layer the equipment; the information integration layer also generates an equipment information model according to OPC UA (optical proximity correction) matching specifications, and performs model instantiation according to the acquired equipment information to generate a corresponding data file; the information integration layer is also responsible for updating and detecting the state of the network equipment, periodically updating the integrated information database and sending the updated information to the information control layer;
the field device layer comprises various production line terminal devices and other network basic devices in a production field, and comprises a production line terminal controller, various sensors, a user terminal, a protocol conversion gateway, an industrial switch, a router, a network bridge and the like, the devices are all provided with hardware entities, and data interconnection is carried out among the devices through an industrial communication network.
Furthermore, the information control layer comprises an OPC UA client, a data storage module, an update control module, a network analysis module, a topology management module, a resource management module and a path management module;
the OPC UA client can remotely access the OPC UA server by adopting a TCP/IP protocol, periodically acquire integrated equipment information and equipment updating information and send the acquired information to other modules; meanwhile, the OPC UA client can send a control instruction to the OPC UA server to support the file modification of the information integration layer related module and the database;
the data storage module stores the acquired equipment information, and performs related backup on historical equipment data to support other modules to call;
the updating control module is responsible for issuing an information integration control instruction to the network control end, modifying the configuration requirement of the corresponding equipment of the network control end and starting the information sending operation of the equipment;
the network analysis module performs unified management and control and risk analysis on the whole network state, receives equipment state perception data of a network application layer, performs real-time production process verification on a built-in network equipment model example and equipment updating information, and timely warns about the condition of error and leakage information;
the topology management module processes the equipment reference information, constructs a real-time network topology structure according to the relationship between the equipment, analyzes the connection property and the path relationship of the network equipment, and evaluates the stability of the real-time network topology;
the resource management module analyzes network schedulable resources according to the equipment integration information, and the resource management module comprises schedulable path resources, link capacity resources and equipment resources;
the path management module carries out integration analysis on path resources and designs an information transmission path of the network equipment when sending the network equipment information integration control instruction.
Furthermore, the information integration layer comprises the OPC UA server, a protocol mapping module, a model generation module and a database;
an OPC UA (OLE for process control) server is internally provided with an OPC UA Pub/Sub (publish/subscribe) module, and periodically updates equipment integration information by subscribing state information and control information published by various equipment of a field equipment layer;
the protocol mapping module supports mainstream industrial wired/wireless network protocol analysis and OPC UA model address space mapping aiming at information integration of heterogeneous network equipment and provides support for information standardization of the heterogeneous network equipment;
the model generation module is used for constructing a type model for the acquired equipment information by combining preset field standard information based on OPC UA information model construction specifications, and performing type instantiation according to a defined type and a defined method of the type model to generate an industrial network equipment instantiation object and a corresponding data file;
the database stores historical network equipment information, real-time network equipment information, type model data and instantiation data, carries out classification and layering according to equipment attributes, and triggers an updating mechanism according to the real-time equipment information.
Furthermore, the various devices of the field device layer include devices supporting OPC UA and devices not supporting OPC UA;
the equipment supporting the OPC UA is loaded with a corresponding OPC UA Pub/Sub module, and can periodically or event issue equipment information for the OPC UA server to subscribe and receive;
the device which does not support the OPC UA is not provided with an OPC UA communication module, starts the information sending operation of the device through an information integration control instruction, sends the device information to the optional device which supports the OPC UA, and the optional device replaces the issue.
An industrial network equipment information integration method based on OPC UA is characterized by comprising two parts of periodic integration and equipment updating;
the periodic integration refers to that when a production task period starts or a production task runs, an industrial network periodically acquires and integrates equipment information;
the device update refers to that the network state is changed due to network device failure, new device access and the like, and the industrial network detects update information and takes update operation.
Further, the periodic integration comprises the steps of:
step 1, acquiring production requirements, a network device publishes device state information and control information through a built-in Pub/Sub module, a device without the built-in Pub/Sub module sends information to other devices to replace publishing, and an OPC UA server subscribes to acquire the information;
step 2, the information integration layer imports equipment information into a database, analyzes the function attribute of the equipment, classifies the equipment supporting various protocols, and further classifies the information of each layer of network equipment;
step 3, according to the pre-generated information type model, performing protocol address space mapping on the equipment to generate an OPC UA instantiation model;
step 4, sending the model data file to the OPC UA client through a TCP/IP protocol, and obtaining the information and carrying out backup storage by the client;
step 5, the information control layer constructs network topology according to the reference information in the model data, conducts schedulable network resource analysis and sends the equipment information and the analysis result to the industrial network control end;
the device update comprises the following steps:
step 1, network equipment is updated, and the industrial network control end receives network state updating information and sends the network state updating information to the information control layer;
step 2, the information control layer receives the updated information, judges the state of the equipment, and if the equipment is cancelled due to the reasons of failure and the like, sends a modification instruction to the OPC UA server through the OPC UA client, deletes the corresponding instantiation model, and updates the network topology and the resource information at the same time; if the equipment is newly accessed, the next step is carried out;
step 3, the updating control module sends an updating instruction to the industrial network control end, and the industrial network control end adjusts the scheduling requirement and the configuration scheme and sends the updating instruction to the network new access equipment; the equipment selects to directly release the equipment information or send the equipment information to other equipment to be released according to whether the Pub/Sub mechanism is supported or not;
step 4, the information integration layer acquires new equipment information, imports the new equipment information into a database, classifies the new equipment information, and verifies the updated information of the equipment;
and 5, if the model database does not have the applicable type model of the equipment, establishing a corresponding type model according to the OPC UA specification. Sending the data file to the OPC UA client after instantiation;
and 6, updating network topology and resource information by the information control layer.
Further, in the periodic integration step 1, the device state information includes device static parameters, device operating parameters, device IDs, device addresses, and device connection relationships; the device control information includes a device control instruction set, device event data, device update log data, and a device update sequence priority.
Further, in the periodic integration step 2, the device function attribute includes a network device support protocol type, a device network layer, a device network type, and a device function type.
Further, in the period integration step 2, the hierarchical classification is to divide object hierarchies on the basis of standardized data and functional interfaces according to the functional attributes of network devices and by combining the actual production and network management and control requirements; the device objects of different layers have different parent class inheritance objects and different method interfaces in the aspect of information retrieval.
Further, in the device updating method, the information control layer and the industrial network control end belong to a bidirectional interaction relationship, the industrial network control end senses the real-time state of the network device, receives the state information and the updating information of the device and sends the state information and the updating information to the information control layer, and sends a corresponding information integration control instruction; the information control layer updates and verifies integrated equipment information according to the equipment perception information, performs resource integration and network state analysis on the integrated equipment information, sends corresponding integrated information and a calculation result to the industrial network control end, and provides standardized equipment data and information integration configuration requirements for an equipment perception and configuration process of the industrial network control end.
Compared with the prior art, the invention has the following remarkable advantages:
1. an information integration system of industrial network equipment is constructed, information integration is carried out on various network equipment, and unified management and control of large-scale heterogeneous network equipment are facilitated;
2. the hierarchical classification of network equipment information integration and a corresponding network management mechanism are designed, the network connection characteristics are reserved on the basis of information standardization, and the topology and path characteristics of the network equipment are utilized to the maximum extent;
3. the equipment information integration scheme which does not support OPC UA is designed, so that the expansibility of the information integration of the industrial network equipment is greatly improved;
4. the method for integrating the information of the industrial network equipment ensures efficient periodic integration and equipment updating processes and greatly improves the flexibility of information integration in the industrial production process.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a diagram of an information integration system of an industrial network device according to a preferred embodiment of the present invention;
FIG. 2 is a functional block diagram of a device information integration system according to a preferred embodiment of the present invention;
FIG. 3 is a flowchart illustrating steps of a method for periodic integration of an industrial network according to a preferred embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps of a method for updating an industrial network device according to a preferred embodiment of the present invention;
FIG. 5 is a diagram of a specific production line industrial network device information integration system in accordance with a preferred embodiment of the present invention;
FIG. 6 is a diagram illustrating hierarchical classification of device information according to a preferred embodiment of the present invention.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
The invention provides an industrial network equipment information integration system based on OPC UA, which clearly distinguishes layers by a client and a server of the OPC UA, the client and the server communicate through a TCP/IP protocol, and an OPC UA Pub/Sub module is arranged in a field device and can communicate with an OPC UA server, as shown in figure 1. The basic network device of the field device layer not only includes a production line terminal device, but also includes other network devices such as an industrial switch, a protocol conversion gateway, and the like. The functional structure diagram of the information integration system is shown in fig. 2, which shows the main functional component modules of each layer of the system in detail, and other functional structures having similarity or being in inclusion relationship are not described in detail. The system adopts an industrial network equipment information integration method, which comprises two parts of periodic integration and equipment updating, and flow charts are respectively shown in fig. 3 and fig. 4.
The preferred embodiment is shown in fig. 5, and the network layer includes a backbone network and two types of heterogeneous field networks, each type of field network has corresponding production line terminal devices and network switch devices, and the devices have functional diversity and data heterogeneity. The two types of field networks are in communication connection through an industrial protocol conversion gateway and are connected into a backbone network in a factory, and meanwhile, a plurality of industrial switches also exist in the backbone network. The production line has arranged corresponding OPC UA function software, enough field devices supporting OPC UA exist, an OPC UA server is arranged on a field host, other function modules of an information integration layer are also contained on the host, and an OPC UA client is positioned on an industrial network control layer. The production line adopts the industrial network equipment information integration system based on OPC UA to integrate network equipment information so as to ensure the high efficiency and flexibility of the information integration and equipment updating process.
The information integration process of the specific industrial production line network equipment is as follows:
1. the network control end sends equipment updating information or information integration commands to the information control layer, the information control layer carries out network topology management and path management according to built-in basic network information or historical storage equipment information, designs corresponding equipment state data transmission paths, converts the corresponding equipment state data transmission paths into corresponding configuration requirements and sends the configuration requirements to the network control end.
2. The control end generates and issues a corresponding equipment configuration instruction according to the configuration requirement;
3. after receiving the configuration instruction, the device issues own device information through an OPC UA Pub/Sub module, and the device which does not support OPC UA sends the device information to an optional device after printing a device label according to a designed path, and the device information is issued instead of the optional device;
4. the information control layer sends a control instruction to an OPC UA server of the field host through an OPC UA client to start a network equipment information acquisition process;
5. and the information integration layer subscribes the state information and the control information published by the equipment through the Pub/Sub module and detects the equipment state. If the device is newly accessed, an instantiation object is generated according to a preset type model, or a new type model is generated based on OPC UA supporting specifications, and if the device is logged off, the corresponding instantiation object data is deleted. Meanwhile, for other network equipment, equipment information is updated;
6. the hierarchical classification is performed according to the device function attributes, as shown in fig. 6. For a specific production line with complex network layers and large heterogeneous network occupation ratio, the network layers and equipment can support protocols, namely, the network layers and the equipment are classified by a backbone network and a field network and are distinguished by various field networks. Network devices of the same layer, such as terminal device 1 and terminal device 2, terminal device 3 and terminal device 4, and 3 backbone switches, are in parallel relation in the server address space and have the same parent class. The switches and gateways of different levels do not have the same direct inheritance object;
7. after the equipment information is collected, corresponding updated equipment information is sent to information control according to the management and control requirements of the client network;
8. and the information control layer corresponding module checks and analyzes the updated information, updates the network topology and the resource information, integrates and coordinates the equipment resources, and transmits the standardized equipment data to the network control end.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concept. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An industrial network equipment information integration system based on OPC UA comprises an information control layer, an information integration layer and a field equipment layer;
the information control layer calls the network equipment integration information, coordinates equipment resources according to network control requirements and transmits equipment data instantiation objects to a network control end; the information control layer also analyzes the network state according to the integrated equipment information and performs corresponding resource management; the information control layer also sends a corresponding control instruction to the network control end according to the basic information or the updating information of the network equipment;
the information integration layer collects information of the field equipment, acquires and stores state information and control information of various equipment, and analyzes static attributes and functional attributes of the equipment so as to classify and layer the equipment; the information integration layer also generates an equipment information model according to OPC UA supporting specifications, and performs model instantiation according to the acquired equipment information to generate a corresponding data file; the information integration layer is also responsible for updating and detecting the state of the network equipment, periodically updating the integrated information database and sending the updated information to the information control layer;
the field device layer comprises various production line terminal devices and other network basic devices in a production field, and comprises a production line terminal controller, various sensors, a user terminal, a protocol conversion gateway, an industrial switch, a router, a network bridge and the like, the devices are all provided with hardware entities, and data interconnection is carried out among the devices through an industrial communication network.
2. The OPC UA based information integration system of an industrial network device in claim 1, wherein the information control layer comprises an OPC UA client, a data storage module, an update control module, a network analysis module, a topology management module, a resource management module, a path management module;
the OPC UA client can remotely access the OPC UA server by adopting a TCP/IP protocol, periodically acquire integrated equipment information and equipment updating information and send the acquired information to other modules; meanwhile, the OPC UA client can send a control instruction to the OPC UA server to support the file modification of the information integration layer related module and the database;
the data storage module stores the acquired equipment information, and performs related backup on historical equipment data to support other modules to call;
the updating control module is responsible for issuing an information integration control instruction to the network control end, modifying the configuration requirement of the corresponding equipment of the network control end and starting the information sending operation of the equipment;
the network analysis module performs unified management and control and risk analysis on the whole network state, receives equipment state perception data of a network application layer, performs real-time production process verification on a built-in network equipment model example and equipment updating information, and timely warns about the condition of error and leakage information;
the topology management module processes the equipment reference information, constructs a real-time network topology structure according to the relationship between the equipment, analyzes the connection property and the path relationship of the network equipment, and evaluates the stability of the real-time network topology;
the resource management module analyzes network schedulable resources according to the equipment integration information, and comprises schedulable path resources, link capacity resources and equipment resources;
the path management module carries out integration analysis on path resources and designs an information transmission path of the network equipment when sending the network equipment information integration control instruction.
3. The OPC UA based industrial network device information integration system of claim 1 wherein the information integration layer comprises the OPC UA server, a protocol mapping module, a model generation module, a database;
an OPC UA (OLE for process control) server is internally provided with an OPC UA Pub/Sub (publish/subscribe) module, and periodically updates equipment integration information by subscribing state information and control information published by various equipment of a field equipment layer;
the protocol mapping module supports mainstream industrial wired/wireless network protocol analysis and OPC UA model address space mapping aiming at information integration of heterogeneous network equipment and provides support for information standardization of the heterogeneous network equipment;
the model generation module is used for constructing a type model for the acquired equipment information by combining preset field standard information based on OPC UA information model construction specifications, and performing type instantiation according to a defined type and a defined method of the type model to generate an industrial network equipment instantiation object and a corresponding data file;
the database stores historical network equipment information, real-time network equipment information, type model data and instantiation data, carries out classification and layering according to equipment attributes, and triggers an updating mechanism according to the real-time equipment information.
4. The OPC UA-based industrial network device information integration system of claim 1, wherein the field device layer classes of devices comprise devices supporting OPC UA and devices not supporting OPC UA;
the equipment supporting the OPC UA is loaded with a corresponding OPC UA Pub/Sub module, and can periodically or event release equipment information for the OPC UA server to subscribe and receive;
the device which does not support the OPC UA is not provided with an OPC UA communication module, starts the information sending operation of the device through an information integration control instruction, sends the device information to the optional device which supports the OPC UA, and the optional device replaces the issue.
5. An industrial network equipment information integration method based on OPC UA is characterized by comprising two parts of periodic integration and equipment updating;
the periodic integration refers to that the industrial network periodically acquires and integrates equipment information when a production task period starts or the production task runs;
the device update refers to that the network state is changed due to the conditions of network device failure, new device access and the like, and the industrial network detects update information and takes update operation.
6. The OPC UA based industrial network device information integration method of claim 5, wherein the periodic integration comprises the steps of:
step 1, acquiring production requirements, a network device publishes device state information and control information through a built-in Pub/Sub module, a device without the built-in Pub/Sub module sends information to other devices to replace publishing, and an OPC UA server subscribes to acquire the information;
step 2, the information integration layer imports equipment information into the database, analyzes the function attribute of the equipment, classifies the equipment supporting various protocols and further classifies the information of each layer of network equipment;
step 3, according to the pre-generated information type model, performing protocol address space mapping on the equipment to generate an OPC UA instantiation model;
step 4, sending the model data file to the OPC UA client through a TCP/IP protocol, and obtaining the information and carrying out backup storage by the client;
step 5, the information control layer constructs network topology according to the reference information in the model data, conducts schedulable network resource analysis and sends the equipment information and the analysis result to the industrial network control end;
the device update comprises the following steps:
step 1, network equipment is updated, and the industrial network control end receives network state updating information and sends the network state updating information to the information control layer;
step 2, the information control layer receives the updated information, judges the state of the equipment, and if the equipment is cancelled due to the reasons of failure and the like, sends a modification instruction to the OPC UA server through the OPC UA client, deletes the corresponding instantiation model, and updates the network topology and the resource information at the same time; if the equipment is newly accessed, the next step is carried out;
step 3, the updating control module sends an updating instruction to the industrial network control end, and the industrial network control end adjusts the scheduling requirement and the configuration scheme and sends the updating instruction to the network new access equipment; the equipment selects to directly release the equipment information or send the equipment information to other equipment to be released according to whether the Pub/Sub mechanism is supported or not;
step 4, the information integration layer acquires new equipment information, imports the new equipment information into a database, classifies the new equipment information, and verifies the updated information of the equipment;
and 5, if the model database does not have the applicable type model of the equipment, establishing a corresponding type model according to the OPC UA specification. Sending the data file to the OPC UA client after instantiation;
and 6, updating network topology and resource information by the information control layer.
7. The OPC UA-based industrial network device information integration method of claim 6, wherein in the periodic integration step 1, the device state information comprises a device static parameter, a device operation parameter, a device ID, a device address, and a device connection relationship; the device control information includes a device control instruction set, device event data, device update log data, and a device update sequence priority.
8. The OPC UA-based industrial network device information integration method of claim 6, wherein in the periodic integration step 2, the device function attributes comprise a network device support protocol type, the network hierarchy of the device, a network type to which the device belongs, and a device function type.
9. The OPC UA-based industrial network device information integration method of claim 6, wherein in the periodic integration step 2, the hierarchical classification is to divide object hierarchies on the basis of standardized data and functional interfaces according to functional attributes of network devices in combination with actual production and network management and control requirements; the device objects of different layers have different parent class inheritance objects and different method interfaces in the aspect of information retrieval.
10. The OPC UA based information integration method of an industrial network device of claim 6, wherein in the device update method, the information control layer and the industrial network control end belong to a bidirectional interaction relationship, the network control end senses a real-time status of a network device, receives status information and update information of the device, sends the status information and update information to the information control layer, and sends a corresponding information integration control command; the information control layer updates and verifies the information of the integrated equipment according to the equipment sensing information, performs resource integration and network state analysis on the information of the integrated equipment, sends corresponding integrated information and a calculation result to the network control end, and provides standardized equipment data and information integration configuration requirements for the equipment sensing and configuration process of the control end.
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