CN109598063A - A kind of data-link networking dynamic model driving method based on AADL - Google Patents
A kind of data-link networking dynamic model driving method based on AADL Download PDFInfo
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Abstract
The invention belongs to avionics system designing techniques, are related to a kind of data-link networking dynamic model driving method based on AADL.The present invention extends AADL language the following steps are included: step 1, can describe aeronautical data chain, and establish the AADL model of multi-platform avionics system by way of component；Step 2 realizes the interaction of AADL model and external network emulation by the transmitting of XML file；Step 3 arrives the external network simulation result of AADL model using feedback, drives AADL model dynamic simulation.The present invention is on the basis of traditional AADL language models electronic system physical structure, and by growth data chain communication component, the physical structure description of system is expanded to the multiple platform system to be got up by Radio Link tissue.
Description
Technical field
The invention belongs to avionics system designing techniques, are related to a kind of data-link networking dynamic model drive based on AADL
Dynamic method.
Background technique
The multi-platform avionics system of isomery, which can flexibly be organized, is under the systems task environment such as the following sea, land and sky, day, a variety of
Foreign peoples's airborne platform is to reach the task objects such as various air-air, skies-face, sky-day, by high speed, broadband, low latency, resists and does
It disturbs, heterogeneous wireless ad hoc network system interconnection, carries out sensor, processing and the mission payload etc. of each airborne platform avionics system
The flexible combination and height function synthesized of resource, real-time collaborative form the multi-platform synthesis of isomery for supporting distributed system concept
Avionics system.The multi-platform avionics system of isomery breaks through the single platform avionics system concept of tradition, belongs to specific model
System grade (SOS) integrated avionics system enclosed is one of the Main way that avionics system develops under the following system environment.
For single machine platform, Distributed Integration modularization avionics system (DIMA) is improved new on the basis of IMA
Type avionics system framework, the multiple functional modules of the system requirements share a general hardware platform, and thus bring is for mould
The requirement of the system architectures element such as block, network, software also has new feature.Such system features are coped with, mould can be taken based on
The design means of type, according to the analysis of system function requirement as a result, establishing the digitlization comprising system architecture key element
Model carries out system capability prediction or functional assessment.
System architecture modeling is traction with task ability, designs and improve the architecture based on physics realization, first
First will be from the key element of the visual angle extraction system of physical structure, and establish corresponding model.In many modeling languages, AADL
It is capable of providing the hardware platform modeling of processor, memory, bus and equipment etc., process, thread, subprogram, parameter, data
And the software platform modeling and software and hardware comprehensive modeling of calling sequence, mode conversion etc..
When carrying out modelling, using layered design method, including Top-layer Design Method and bottom-layer design.Top-layer Design Method is main
It is each region/subsystem/intermodule relationship in description avionics system；The software and hardware composition of the main describing module of bottom-layer design,
Relationship between software and hardware and module, software and hardware and software and hardware.Component corresponding to each Design hierarchy, AADL description language is all
There is corresponding designed component to be corresponding to it, including component software and execution platform assembly etc..This layer-stepping modeling process is
The embodiment of AADL gradually refinement thinking.The division of avionics system from top to bottom, the model foundation corresponding to AADL can
It is divided into system layer, functional layer and behavior layer.
The main model component of system layer is peripheral hardware, processor, memory are set to execution the related of platform member such as buses
Meter, mainly dividing system, subsystem boundary, specify related data relationship etc.；Functional layer carries out phase by process and thread etc.
It should be abstracted, further refine specific tasks process and external data configuration relation, specify specific task process, including apply journey
Sequence and platform task；Behavior layer then passes through the behavior attachment of AADL, carries out to the concrete behavior of thread and subprogram component detailed
Description.It is also the very important design considerations of model analysis.
The visual angle analyzed for novel avionics system is determined first；By acquisition to novel avionics system demand and
The exploitation and building of rapid prototyping are carried out in analysis on the basis of established functional architecture.The work of demand analysis is general
By system function design, personnel are completed.Its verification method and process are broadly divided into:
1) it analyzes according to demand, selects suitable component type and some component elements (i.e. feature, stream and attribute).
2) it creates component for each component to realize, then by required element (such as sub-component, connection type, stream and category
Property) it is added to component realization, the optimization processing of component type is carried out to it.
3) system component types are established and realize the boundary to indicate system.All components are realized and its connection is added
It is realized to system.
Its core concept is cross-domain, cross-platform collaboration, by same/foreign peoples's group of planes, has man-machine and unmanned plane formation collaborative party
Formula is realized currently integrated with the abilities such as following control, space and network in a flexible frame.
1) limitation of system building connection
The multi-platform avionics system of isomery has very big difference with single platform avionics in configuration, in addition in each platform avionics system
Outside portion's configuration isomery, the adaptive network topology structure of isomery is increased between platform.AADL language is directed to avionics system software and hardware
Respective members are set forth to be described, but for network topology between platform, that there is no components is corresponding, therefore AADL pairs
In the description existing defects of multi-platform avionics system.
2) limitation of resource binding
Traditional AADL system architecture modeling, carries out, resource type is abstracted as primarily directed to typical electronic system
Processor, storage, software process, thread etc. are abstracted as modelling component by the computer system of von Neumann interface, while it is
System is connected to logic level using interface, and physical connection is mainly used traditional bus form, carried out in the way of binding
Modeling.Need to consider the topology in space between architecture level, node, connection considers the form of data-link, while will also basis
The configuring condition of task completes that functions, the existing AADL design methods such as the abstract of task resource, management can not be expired
Foot.
3) limitation of evaluation of properties
Current AADL language is more to be unfolded to describe towards single plateform system, therefore towards AADL system model
Characteristic Simulation assessment, be more some characteristics under single platform/system, as the scheduling characteristic of inside modules, cpu busy percentage,
Real-time, reliability and safety of platform etc..When we describe system improving to system level, new evaluation body will be faced
System, such as platform nodes ad hoc network characteristic, data-link, task resource configuration.The original some attributes of AADL cannot
Meet the requirement of architecture analysis, and simply can not complete above-mentioned simulation and analysis by increasing building attribute.
With the further development of network-centric warfare, the System Design that aerial multimachine carrying platform is formed needs in method
It is expanded.Tradition is based in the design method of model, and it is flat to describe single machine for the mainly avionics system towards single machine platform
System architecture inside platform.In the description method based on AADL language, exist for the Modeling and Design of multi-platform avionics system
Following limitation:
1) respective members progress is set forth for avionics system software and hardware in the limitation of grid topology, AADL language
Description, but that there is no components is corresponding for network topology between platform.
2) limitation of internodal data chain link, needs to consider the topology in space between architecture level, node, and connection is examined
Consider the form of data-link, existing AADL design method is not able to satisfy.
Summary of the invention
The purpose of the present invention is: limitation present in the Modeling and Design for multi-platform avionics system, the present invention provide one
Data-link networking dynamic model driving method of the kind based on AADL, realizes it for the model extension of Radio Link, to support
Modeling and simulation of the multi-platform networking of aviation field in AADL physical structure design process, promotion system grade avionics system are built
Mould designed capacity.
The technical scheme is that a kind of data-link networking dynamic model driving method based on AADL, including it is following
Step:
Step 1 extends AADL language, can describe aeronautical data chain by way of component, and establish mostly flat
The AADL model of platform avionics system；
Step 2 realizes the interaction of AADL model and external network emulation by the transmitting of XML file；
Step 3 arrives the external network simulation result of AADL model using feedback, drives AADL model dynamic simulation.
The beneficial effects of the present invention are: the present invention provide between a kind of pair of more flying platforms of aviation field based on AADL's
Data-link networking dynamic model driving method, this method is on the basis that traditional AADL language models electronic system physical structure
On, by growth data chain communication component, the physical structure description of system is expanded to and is put down by what Radio Link tissue got up more
Platform system.Through the method, in system engineering (MBSE) design based on model, so that it may increase the demand of system level
Analysis and architecture design ability.Meanwhile this method breaches model static constraint when AADL language describes system architecture, draws
Dynamic drive method is entered, to better describe the dynamic characteristic of link networking.
Detailed description of the invention
Fig. 1 is that data-link extends schematic diagram；
Fig. 2 is that AADL data-link extends composition schematic diagram；
Fig. 3 is external network emulation access AADL model schematic；
Fig. 4 is more airborne platform network topology incidence matrix schematic diagrames based on AADL.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
The present invention is based on the data-link networking dynamic model driving methods of AADL, specifically includes the following steps:
1) extension of data chain component is carried out to AADL language
The extension of data chain component is divided into functional extension and redescribes and injection two parts of nonfunctional space
Content, as shown in Figure 1.In the extension of functional attributes, the universal description of data-link should be defined first, and will count
The encapsulation of bottom is carried out according to the function of chain, the content of encapsulation should combine universal description and the classification side of aviation field data-link
Method, it should include the definition of link component, and the matching of communication end system.It is fixed that this two-part interface should also be as again
Justice.Simultaneously by these nonfunctional spaces of the survivability of data-link, flexibility and reliability index, pass through AADL data chain model
Attribute node is extended, some are needed to be assigned in AADL software entity these indexs, some need to be assigned to the hard of AADL
In part entity, the analysis by these characteristics is needed, is decomposed accordingly.
Traditional AADL modeling, the description for physical structure are concentrated inside single plateform system, each subsystem it
Between physical connection be to be described by all kinds of buses, AADL carries out general description using dedicated bus component, but due to
When bus component designs, it is to be connected towards wired entity entirely, does not have the attribute of wireless communication, also do not have wireless communication
The connection features to cut in and out.
Need to carry out three parts component extension in this method, such as Fig. 2:
First, the traditional port members of AADL are extended, outside the port diagnostic for removing information level, increase antenna hole
The information such as diameter distinctive attribute, including frequency, standard and link characteristics, while adding display/hiding category of visual attribute
Property, convenient after network simulation driving, the variation of dominant description network topology.
Second, for the airborne platform that each needs to access by data-link, require to enter in external antenna ports
When internal system, the component of a system of a communication end system is first passed through, which has the general of radiofrequency signal processing
Function can be with detailed signal processing function using the system building further progress design of AADL, or is designed as signal
External behavior, selection gist be system designer demand.
Third still follows the side of the traditional logical connection binding of AADL for the construction of bus component in AADL language
Formula, but in the method, bus component is transformed into Radio Link carrier, its function as datalink network and non-functional category
Property carrier be extended, while will also safeguard a networking Topology connection matrix, reflection and the matched connection shape of time attribute
State.
2) more airborne platform networking external network emulation accesses
The phase that data-link model extension based on AADL models entire data-link physical structure in reception AADL model
After closing data, carry out networking modeling and simulation, and analyze its nonfunctional space, survivability, flexibility including data-link and
Reliability, such as Fig. 3.Its particular content is as follows:
2.1) division of software and hardware functional module is carried out to data Network Protocols in Wideband and establishes AADL model；
2.2) extension and building of data-link AADL model are carried out；
2.3) the information transmitting of the networking simulating environment based on XML.
In the extension of functional attributes, the universal description of data-link should be defined first, and by data-link
Function carries out the encapsulation of bottom, and the content of encapsulation should be in conjunction with the universal description and classification method of aviation field data-link, it is answered
When the definition including link component, and the matching of communication end system.This two-part interface should also be as redefining.Simultaneously will
These nonfunctional spaces of survivability, flexibility and the reliability index of data-link, pass through the attribute node of AADL data chain model
It being extended, some are needed to be assigned in AADL software entity these indexs, some are needed to be assigned in the hardware entities of AADL,
The analysis by these characteristics is needed, is decomposed accordingly.
3) AADL prototype network dynamic drive method
Basic procedure to the avionics system dynamic driving based on AADL model is as shown in figure 3, its detailed process describes such as
Under.
In aviation link networking, each airborne platform node of network topology, the positional relationship moment is changing, very
Also ceaselessly changing to the connection between each node, how in static AADL model to introduce dynamic information change mould
Formula is the major issue that the present invention solves.Networking state matrix is added in the bus component language description of AADL in this method, should
The message reflection of matrix be a certain moment model networking connection relationship, the information be originated from external network emulation as a result, simultaneously
Dynamic is passed in AADL model by way of XML.AADL component is carried out particular by the method for Custom Attributes collection
It expands, data-link extends component by obtaining the network information from multi-platform physical structure design and analysis environment, to annotate net
Network topological matrix.
In order to intuitively show the network topology in more airborne platform network frame models based on AADL between each platform
Relationship devises how unmanned platform network topological correlation matrix as shown in Figure 4.The quantity and scenario of network topology incidence matrix
In quantity it is consistent, in the network topology incidence matrix group, all aviations are flat in one task phase of each matrix representative
Network topology between platform.Each network topology incidence matrix horizontally and vertically indicates airborne platform, number in matrix
Value is 1 to indicate between corresponding two airborne platforms there are correspondence, and numerical value is 0 to indicate corresponding two airborne platforms in battle array
Between be not present correspondence, thus indicate the network topology structure between each airborne platform of each task phase.
The update of the data information is updated the design of step-length by AADL model, and fixed step-length can be set, with aobvious
Show lasting model variation, each timing node can also be customized according to business key node, reflects that the network of critical process drives
Dynamic variation characteristic.
Finally, due to external mesh information is transmitted to the information in AADL model, it is the multidate information promoted at any time, because
This originally static AADL model, has a feature of multidate information, AADL model emulation software, can according to these information into
Mobile state emulation, the other information of AADL can also add respective multidate information with the mode of network-driven.The present invention is most
The purpose of dynamic driving avionics system AADL model is realized eventually.
Claims (4)
1. a kind of data-link networking dynamic model driving method based on AADL, it is characterized in that the described method comprises the following steps:
Step 1 extends AADL language, can describe aeronautical data chain, and establish multi-platform boat by way of component
The AADL model of electric system；
Step 2 realizes the interaction of AADL model and external network emulation by the transmitting of XML file；
Step 3 arrives the external network simulation result of AADL model using feedback, drives AADL model dynamic simulation.
2. data-link networking dynamic model driving method according to claim 1, it is characterized in that: the step 1 include with
Lower step:
1.1) the traditional port members of AADL are extended, outside the port diagnostic for removing information level, it is special increases antenna aperature
Some attributes, including frequency, standard and link characteristic information, while adding display/hiding attribute of visual attribute；
1.2) it for the airborne platform that each needs to access by data-link, requires to enter in system in external antenna ports
When portion, the component of a system of a communication end system is first passed through, which has the general utility functions of radiofrequency signal processing, can
It is designed using the system building further progress of AADL, can be with detailed signal processing function, or it is designed as the outside of signal
Characteristic, selection gist are the demand of system designer；
1.3) for the construction of bus component in AADL language, bus component is transformed into Radio Link carrier, it is as data-link
The function of network and the carrier of nonfunctional space are extended, while will also safeguard a networking Topology connection matrix, reflection with
The matched connection status of time attribute.
3. data-link networking dynamic model driving method according to claim 1, it is characterized in that: the step 2 include with
Lower step:
2.1) division of software and hardware functional module is carried out to data Network Protocols in Wideband and establishes AADL model；
2.2) extension and building of data-link AADL model are carried out；
2.3) the information transmitting of the networking simulating environment based on XML.
4. data-link networking dynamic model driving method according to claim 1, it is characterized in that: in the step 3,
In the bus component language description of AADL, be added networking state matrix, the message reflection of the matrix be a certain moment model group
Net connection relationship, which is originated from that external network emulates as a result, and dynamic is passed in AADL model by way of XML.
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