CN106533886B

CN106533886B - Full-interconnection manufacturing network architecture based on IPv6 protocol and management method

Info

Publication number: CN106533886B
Application number: CN201611135530.2A
Authority: CN
Inventors: 王平; 王恒; 张常
Original assignee: Chongqing University of Post and Telecommunications
Current assignee: Kyland Technology Co Ltd
Priority date: 2016-12-09
Filing date: 2016-12-09
Publication date: 2019-12-06
Anticipated expiration: 2036-12-09
Also published as: CN106533886A

Abstract

the invention relates to a full-interconnection manufacturing network architecture based on an IPv6 protocol, belonging to the technical field of industrial networks. The framework comprises a field network, a full internet device and a background system; the field network comprises a wired network and a wireless network and is accessed to the background system through the full-interconnection network equipment; the field network comprises a field IPv6 network and a field non-IPv 6 network, the field IPv6 network refers to various field networks which already support IPv6, and the field non-IPv 6 network refers to a field bus network or an industrial wireless network which does not support IPv 6. The invention realizes seamless fusion and integration between the industrial field network based on the Internet of things and the background system based on the Internet, and meets the information interaction between objects, people and objects and the integrated information integration requirement between the industrial field network and the background system in the industrial environment.

Description

full-interconnection manufacturing network architecture based on IPv6 protocol and management method

Technical Field

The invention belongs to the technical field of industrial networks, and relates to a full-interconnection manufacturing network architecture and a management method based on an IPv6 protocol.

Background

In recent years, in terms of technical architectures, industrial 4.0 architectures and industrial internet architectures are proposed successively, which mainly focus on macroscopic aspects and have less discussion on specific technical content and network convergence protocols. Most of the potential technical elements forming the fully interconnected manufacturing network are still in the aspect of independent development. For example, in the aspect of industrial internet of things, mainstream international standards such as isa100.11a and WIA-PA are successively introduced, but the mainstream international standards mainly consider the communication problem inside a field network, and the deep fusion technology across networks is less involved.

in the aspect of instant information transmission, XMPP is widely applied to the internet, some exploratory work has been applied to internet of things equipment at present, but a uniform specification for a transmitted internet of things data model is lacked. In terms of network management, the TR069 remote management specification introduced by Broadband forum has gradually extended from internet device management to the M2M field, but it focuses mainly on the management function itself. In addition, in terms of device description and information intercommunication, the OPC UA protocol based on XML description is widely developed and can be operated in field devices with limited resources to some extent, but needs to be further extended to the internet.

Similarly, the IPv6 protocol also continuously extends to the field of internet of things, IETF establishes a plurality of working groups, and successively proposes 6LoWPAN, RPL, CoAP and other series of protocols, so as to better solve the technical problem of applying IPv6 to resource-limited internet of things devices in a low-power-consumption lossy environment, but the protocols are mainly formulated for a general internet of things environment, and the optimization of an industrial manufacturing network is less.

At present, the technologies developed by the above methods are lack of effective integration, and a complete network fusion scheme is not formed, so that the method cannot effectively adapt to the network requirements of intelligent manufacturing. Therefore, the report aims to establish a novel full-interconnection manufacturing network architecture, and integrally considers and optimizes various key technologies so as to meet the requirements of seamless fusion and integration of the underlying internet to the internet in an industrial environment.

disclosure of Invention

In view of this, the present invention provides an IPv6 protocol-based fully-interconnected manufacturing network architecture and a management method thereof, which implement seamless integration and integration of a bottom internet of things and the internet by establishing a fully-networked unified device description architecture, an XMPP instant messaging protocol, a TR069 resource management mode, and an IPv6 address coding mode, thereby establishing a unified fully-interconnected manufacturing network architecture.

In order to achieve the purpose, the invention provides the following technical scheme:

A full-interconnection manufacturing network architecture based on an IPv6 protocol comprises a field network, full-interconnection network equipment and a background system; the field network comprises a wired network and a wireless network, and is accessed to the background system through the full-interconnection network equipment.

further, the field network comprises a field IPv6 network and a field non-IPv 6 network, the field IPv6 network refers to various field networks which already support IPv6, and the field non-IPv 6 network refers to a field bus network or an industrial wireless network which does not support IPv 6.

Further, the full interconnection network device comprises an industrial field network node, a full interconnection converter and a gateway; the background system comprises a full-interconnection information sharing platform, a TR069 server, a MES, an ERP and a field control device.

Further, the field IPv6 network comprises a 6LoWPAN wireless network, an ISA100 wireless network and an IPv 6-based WIFI network; the field non-IPv 6 network comprises a WIA-PA wireless network and a Modbus network.

Furthermore, the field IPv6 network can directly exchange information with the background system through the gateway, and the field non-IPv 6 network is connected with the background system through connecting the corresponding full interconnection converter, so that the unified management and information interaction of the whole network equipment are realized.

Furthermore, the network architecture is constructed by adopting a full-network unified device description method based on XML, an XML instant transmission protocol based on XMPP, a full-interconnection manufacturing network management method and an address coding mode based on the IPv6 technology.

further, the XML-based whole network unified equipment description method adopts a TR069/OPC UA fusion information model to uniformly describe the whole Internet equipment, and constructs a data exchange channel between the bottom layer equipment and the background system; the TR069/OPC UA fusion information model fuses a data model of a TR069 protocol and an information model of OPC UA and is connected by the reference of OPC UA.

Furthermore, the XML instant transmission protocol based on XMPP is used for each underlying device to encode its own data information and management information in an XML format, and transmit the data information and management information by using the XMPP protocol.

A full interconnection manufacturing network management method based on IPv6 protocol comprises an active configuration mode and a passive configuration mode;

the passive configuration mode comprises the steps of:

1-1) when the full internet equipment is on line or the state is changed, actively establishing connection with a preset background system;

1-2) after the connection is established, sending self equipment information to a background system for registration;

1-3) after the registration is finished, the background system can carry out relevant configuration on the equipment according to the equipment information;

1-4) after the configuration is completed, the equipment is actively disconnected.

The active configuration mode comprises the steps of:

2-1) the background system actively establishes connection with the full internet equipment through equipment login information;

2-2) after the connection is established, sending configuration information to the full Internet equipment;

2-3) the equipment executes the configuration command after receiving the configuration information, and sends configuration completion information to the background system after the execution is completed;

And 2-4) actively disconnecting the background system after receiving the configuration completion information.

The invention has the beneficial effects that:

1) the full-interconnection manufacturing network architecture breaks through the traditional control system layered structure, realizes seamless integration and integration between the industrial field network based on the Internet of things and the background system based on the Internet by adopting a uniform IPv6 interconnection protocol and an XMPP instant messaging method, and meets the requirements of information interaction between objects, people and objects and integration information integration between the industrial field network and the background system in an industrial environment.

2) The full-interconnection manufacturing network architecture supports various forms of heterogeneous network interconnection and integration, not only supports industrial network interconnection based on IP technology, but also can access industrial networks which do not support IP technology, such as Profibus, Modbus (RTU), WIA-PA and the like, to the full-interconnection manufacturing network through network equipment, such as a gateway, a converter and the like; the system not only supports wired networks such as Ethernet, but also supports wireless networks such as WIFI and 3G, LTE.

3) The full-interconnection manufacturing network architecture establishes an information description and intercommunication mechanism which takes XML as a core and takes OPC UA as a base. The specific scheme is that on the basis of an OPC UA technical architecture, description models of network equipment and management information in a TR069 protocol are further fused to form an expanded OPC UA information interconnection technology, so that a unified information description model of field intelligent equipment and the network equipment is established, OPC UA is utilized to make a data exchange channel between bottom equipment and a background system, and finally intercommunication and exchange of information layers are realized.

Drawings

in order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:

FIG. 1 is a schematic diagram of an IPv6 protocol-based fully interconnected manufacturing network architecture according to the present invention;

FIG. 2 is a data information flow diagram of the full interconnect manufacturing network architecture based on the IPv6 protocol according to the present invention;

FIG. 3 is a flow chart of management information of an IPv6 protocol-based fully interconnected manufacturing network architecture according to the present invention;

FIG. 4 is a diagram of an OPC UA and TR069 fusion information model;

FIG. 5 is an instantiation diagram of a TR069/OPC UA fusion information model;

FIG. 6 is a flow chart of an active configuration mode;

Fig. 7 is a flow chart of the passive configuration mode.

Detailed Description

preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The basic principle of the full-interconnection manufacturing network architecture is that field devices directly support XML description and IPv6 addressing, information organized in an XML format can freely flow from field nodes to a background system by utilizing an IPv6 network and a gateway, and therefore seamless fusion of a bottom Internet of things and the Internet is achieved.

in order to more clearly illustrate the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings, and the specific implementation process is as follows:

IPv6 protocol-based full interconnect manufacturing network architecture description

fig. 1 is a schematic diagram of a fully-interconnected manufacturing network architecture based on an IPv6 protocol, which uses a gateway as a bridge to establish a fully-interconnected manufacturing network based on an XML unified device description method, an XML immediate transmission protocol based on XMPP, a resource management mode based on TR069, and an address coding method based on an IPv6 technology.

in a fully interconnected manufacturing network based on IPv6 technology, each underlying device has an IP address, and is able to encode its own data information and management information in XML format and transmit them using XMPP protocol. XML is used for information interaction between bottom layer Internet of things equipment, and meanwhile, data information and management information in an XML format can also freely flow to systems such as MES, ERP and the like through forwarding of the border gateway. Therefore, the background system can directly address the field device by using the IPv6 technology, can acquire the data information and the management information of the bottom Internet of things node without the processing of the middle layer of the control network, and realizes the direct information interaction based on the XML with the field intelligent device on the logic level, thereby achieving the goal of seamless fusion and integration between the bottom Internet of things and the Internet, and between the intelligent device and the background system.

Fig. 2 is a data information flow diagram of the full interconnect manufacturing network architecture based on the IPv6 protocol, where data information is organized in an XML format on an intelligent device and transmitted using an IPv6 network. From the network structure, the XML data information reaches the gateway through the communication bottom layer of the equipment, is transferred to the communication bottom layer of the background system, and reaches the upper layer of the system after being analyzed by the information service adaptation software supporting the XMPP protocol and the XML language. On the basis of a logic structure, a direct conversation and interaction relationship exists between the upper layer of the background system and the on-site intelligent equipment, and XML data information is a unified bridge for communicating the background system and the on-site intelligent equipment.

fig. 3 is a flow chart of management information of an all-interconnect manufacturing network architecture based on an IPv6 protocol, where device management and resource management of the entire network are accomplished by using an all-interconnect manufacturing network management method. In the method, a TR069/OPC UA fusion information model is adopted when management information is organized; when the management information is transmitted, the XML format is adopted, and the IPv6 protocol is followed. Therefore, when management information flows among the entities such as field intelligent equipment, gateways, MES, ERP and the like, the management information is still based on XML language and IPv6 protocol, and the transmission mode of the management information is similar to that of a data information flow diagram.

Two, TR069/OPC UA fusion information model description

FIG. 4 is a diagram of an OPC UA and TR069 fusion information model, and since a TR069 protocol network management data model follows a description method of a TR069XML technical standard, the data model is represented as a hierarchical structure similar to a directory tree. The OPC UA address space is a hierarchical complex mesh structure, the address space model is called a meta model, the information model is a model of a specific field established based on the address space, and the OPC UA information model is an extension of the meta model and is also presented as a hierarchical structure. And fusing the data model of the TR069 protocol and the information model of the OPC UA to form a new fused information model as shown in FIG. 4.

the upper half part of the model reserves the hierarchical structure of OPC UA, a root standard object is an entry point of a browsing address space, a view, an object and a type 3 type node are arranged below a root node, and the type is a node type. The fused information model uses 8 node types of OPC UA, generally can respectively define object type, reference type, variable type and data type according to actual requirements, and integrates 4 types to define the type model. Meanwhile, the 4 basic types can be expanded according to actual needs, and if the existing basic types can meet the needs, the expansion is not needed. And the relation between the devices is expressed by a reference type, a built-in reference type in an OPC UA specification can be directly used, a type extension is used in HasTypeDefinition, an attribute composition reference adopts HasComponent and a property reference adopts HasProperty. The lower half of the model incorporates the tree structure of the data model of the TR069 protocol, as shown in fig. 4, the basic object type is extended, each layer extension of the TR069 tree structure is defined as one object type, and the 3-layer tree structure is extended and defined as, for example, firstclassttype, secodclasstype, and ThirdClassType. Meanwhile, the nodes contained in each object type correspond to the objects of the data model of the TR069 protocol, the relationship between the nodes of the upper layer and the nodes of the lower layer is the tree structure relationship of the merged TR069 data model, the nodes are connected by the reference of OPC UA, the total number of reference types of the OPC UA is 8, and actually, several types of reference types meeting the actual application can be selected. The parameters in the data model of the TR069 protocol are described using attributes of nodes in the OPC UA information model, and there are 7 general attributes of OPC UA nodes. The fused information model reserves the process and the method for modeling the OPC UA information model, and simultaneously applies the directory tree structure of TR069 to the fused information model, so that the hierarchical structure of the information model is clear.

FIG. 5 is a schematic diagram of TR069/OPC UA fusion information model instantiation, wherein type instantiation is to instantiate an abstract type into concrete examples, and the examples are externally displayed in the information model based on a standard address space, so that uniform representation of information is achieved. Type definitions and instances are connected by a HasTypeDefinition reference in a Type Definition Node.

the basic rule of the fused information model modeling adopts the same modeling rule as the OPC UA modeling. On the basis of comprehensive analysis specifications and documents, an information modeling process is provided and mainly comprises the following 4 detailed steps:

Step 1: the requirement acquisition mainly comprises the steps of acquiring the device type, the device parameter, the device attribute, the device method, the device event and the relationship between devices or between devices and attributes and between devices and methods required by modeling from a system framework diagram and an application scene diagram, verifying the information required by modeling according to relevant specifications of a specific field, supplementing the information as necessary, and finally classifying the node information into four standard node categories.

Step 2: defining a type model, respectively defining an object type model, a variable type model, a reference type model and a data type model according to 4 types in node categories, and then combining the models into a unified type model.

Step 3: after the type model is defined, instantiating 4 type models according to specific examples of a specific field, and simultaneously establishing an instantiation information model according to a standard address space mode of an OPC UA server.

Step 4: and exporting the XML and CSV documents by using a development toolkit as a data source for realizing instantiation information.

Three, full interconnection manufacturing network management method description

The management method of the full-interconnection manufacturing network is based on the unified description of the full-network equipment and is provided for solving the problem of management information interaction between the bottom equipment and the background system. The method comprises two modes of active configuration and passive configuration.

Fig. 6 is a flowchart of an active configuration mode of a full interconnect manufacturing network management method, which includes the following specific steps:

step 1: and the background system actively establishes connection with the full internet equipment through equipment login information.

Step 2: after the connection is established, the configuration information is sent to the full-interconnection manufacturing network equipment.

Step 3: the device executes the configuration command after receiving the configuration information, and sends configuration completion information to the background system after the execution is completed.

step 4: and after receiving the configuration completion information, the background system actively disconnects the connection.

fig. 7 is a flowchart of a passive configuration mode of a full interconnect manufacturing network management method, which includes the following specific steps:

step 1: when the full internet equipment is on line or the state is changed, connection with a preset background system can be actively established.

step 2: and after the connection is established, sending the self equipment information to a background system for registration.

Step 3: after the registration is completed, the background system can perform relevant configuration on the equipment according to the equipment information.

Step 4: after configuration is completed, the device actively disconnects.

the network architecture and the management method thereof of the invention support but are not limited to IPv6 network, and are also applicable to IPv4 network and IPv4/IPv6 hybrid network.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A full-interconnection manufacturing network system based on IPv6 protocol is characterized in that: the system comprises a field network system, full internet equipment and a background system; the field network system comprises a wired network system and a wireless network system, and is accessed to the background system through the full internet equipment;

The network system is constructed by adopting a full-network unified equipment description method based on XML, an XML instant transmission protocol based on XMPP, a full-interconnection manufacturing network management method and an address coding mode based on the IPv6 technology; the XML-based whole network unified equipment description method adopts a TR069/OPC UA fusion information model to uniformly describe whole Internet equipment and construct a data exchange channel between bottom equipment and a background system;

The TR069/OPC UA fusion information model fuses a data model of a TR069 protocol and an information model of the OPC UA, the upper half part of the model reserves a hierarchical structure of the OPC UA, a root standard object is an entry point of a browsing address space, a view, an object and a type 3 node are arranged under a root node, and the type is a node type; the fused information model uses 8 node types of OPC UA, respectively defines an object type, a reference type, a variable type and a data type according to actual requirements, and integrates 4 types to define a type model; meanwhile, the 4 basic types are expanded according to actual needs, and if the existing basic types can meet the needs, the expansion is not needed; and the relationships between the devices are represented by reference types; the lower half part of the model integrates a tree structure of a data model of a TR069 protocol into the model, basic object types are expanded, and each layer of expansion of the TR069 tree structure is defined as one object type; meanwhile, the nodes contained in each object type correspond to the objects of the data model of the TR069 protocol, the relationship between the nodes of the upper layer and the nodes of the lower layer is the tree structure relationship of the merged TR069 data model, and the nodes are connected by the reference of OPC UA; the parameters in the data model of the TR069 protocol are described using attributes of the nodes in the OPC UA information model.

2. The IPv6 protocol-based fully interconnected manufacturing network system according to claim 1, wherein: the field network system comprises a field IPv6 network system and a field non-IPv 6 network system, the field IPv6 network system refers to various field networks which already support IPv6, and the field non-IPv 6 network system refers to a field bus network or an industrial wireless network which does not support IPv 6.

3. The IPv6 protocol-based fully interconnected manufacturing network system according to claim 2, wherein: the full interconnection network equipment comprises an industrial field network node, a full interconnection converter and a gateway; the background system comprises a full-interconnection information sharing platform, a TR069 server, a MES, an ERP and a field control device.

4. The IPv6 protocol-based fully interconnected manufacturing network system according to claim 3, wherein: the field IPv6 network system comprises a 6LoWPAN wireless network, an ISA100 wireless network and an IPv 6-based WIFI network; the field non-IPv 6 network system comprises a WIA-PA wireless network and a Modbus network.

5. The IPv6 protocol-based fully interconnected manufacturing network system according to claim 4, wherein: the field IPv6 network system can directly exchange information with the background system through the gateway, and the field non-IPv 6 network system is connected with the background system through the corresponding full interconnection converter and the gateway, so that the unified management and information interaction of the whole network equipment are realized.

6. The IPv6 protocol-based fully interconnected manufacturing network system according to claim 5, wherein: the XML instant transmission protocol based on the XMPP is used for each bottom layer device to encode the data information and the management information of the bottom layer device in an XML format and transmit the data information and the management information by utilizing the XMPP protocol.

7. An IPv6 protocol-based full interconnect manufacturing network management method applied to the full interconnect manufacturing network system of claim 1, including an active configuration mode and a passive configuration mode;

The passive configuration mode comprises the steps of:

1-1) when the full internet equipment is on line or the state changes, actively establishing connection with a preset background system;

1-4) after the configuration is finished, actively disconnecting the equipment;

the active configuration mode comprises the steps of: