CN106161117A - The analogue system of a kind of AFDX network and emulation mode - Google Patents
The analogue system of a kind of AFDX network and emulation mode Download PDFInfo
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- CN106161117A CN106161117A CN201610868473.2A CN201610868473A CN106161117A CN 106161117 A CN106161117 A CN 106161117A CN 201610868473 A CN201610868473 A CN 201610868473A CN 106161117 A CN106161117 A CN 106161117A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
Abstract
This application provides analogue system and the emulation mode of a kind of AFDX network, employing discrete event mechanism, end system in AFDX network and switch are all abstracted into discrete events simulation node, AFDX message is abstracted into the discrete event for discrete events simulation node, utilize transmission and the forwarding behavior of discrete event, emulation AFDX message is at the transport behavior of end system, and the forwarding behavior that the AFDX message transmitted from end system is between switch different port, the performance parameter of AFDX network can be obtained based on above-mentioned emulation.The application utilizes the operating mechanism of discrete event simulation true AFDX internet message, can conveniently add up each discrete event and terminate the performance parameter of rear AFDX network, and then optimize AFDX Design of Network System, this iteration cycle that system is designed shortens, simultaneously, end system emulation module in analogue system is automatically imported based on ICD, decreases the system proving time.
Description
Technical field
The present invention relates to communication technical field, particularly relate to analogue system and the emulation mode of a kind of AFDX network.
Background technology
The exchange of avionic full-duplex communication Ethernet (Avionics Full Duplex Switched Ethernet,
AFDX) being an electronics based on standard definition and protocol specification (IEEE802.3 and ARINC 664Part7), it is used for realizing
Data exchange between aviation subsystem.
AFDX network topology is complicated, when carrying out system design, need to consider each end system, switch, virtual link
The configuration of (Virtual link, VL), to ensure real-time and the reliability of AFDX network.System needs to wait for after having designed firmly
Part completes to verify afterwards, is then iterated design according to the result, thus ensures that AFDX network is in optimal design.
In order to reduce system iteration cycle, currently mainly deduce mode by network and AFDX network carried out system emulation,
Obtained system delay and the loading condition of AFDX network by emulation, and then optimize AFDX net based on system delay and loading condition
Network designs.But, it is relatively big with the true airborne configuration variance of AFDX network that existing network deduces mode, and, it is being iterated
During design, needing to be manually entered, emulation mode is complicated every time.
Summary of the invention
In view of this, the invention provides analogue system and the emulation mode of a kind of AFDX network, existing in order to solve
Emulation mode and true airborne configuration variance are relatively big, and when being iterated design, need to be manually entered every time, and emulation mode is multiple
Miscellaneous problem, its technical scheme is as follows:
A kind of analogue system of AFDX network, including: file imports module, end system emulation module, switch emulation mould
Block and simulation result output module；
Described file imports module, for obtaining the ICD of the configuration information including described AFDX network, base
Described end system emulation module is imported, using the described end system emulation module of importing as the first kind in described ICD
Discrete events simulation node, and configure discrete thing based on described ICD at described first kind discrete events simulation node
Part, and, create described switch emulation module based on described AFDX network of network topology and imitate as Equations of The Second Kind discrete event
True node, wherein, it is discrete that described discrete event is included in the first kind that described first kind discrete events simulation node carries out emulating
Event and transmission to described Equations of The Second Kind discrete events simulation node carry out the Equations of The Second Kind discrete event emulated；
Described end system emulation module, is used for utilizing described first kind discrete event successively from application layer, transport layer, network
Layer, the transmitting procedure of link layer, emulate described AFDX network middle-end internal system AFDX message successively from application layer, transport layer,
Internet, the transmitting procedure of link layer, it is thus achieved that the first performance parameter of described AFDX network；
Described switch emulation module, for utilizing the discrete thing of Equations of The Second Kind transmitted from described end system emulation module
Part routing forwarding based on switch rule and virtual link configuration carry out the process forwarded, and emulation is from described AFDX network middle-end
The AFDX message that system transfers is crossed carries out the process forwarded in described AFDX network between the different port of switch, it is thus achieved that institute
State the second performance parameter of AFDX network；
Described simulation result output module, for being exported the first performance ginseng of described AFDX network by the way of output preset
Number and the second performance parameter of described AFDX network.
Wherein, described file imports module, specifically for being led by the device configuration information in described ICD
Enter described end system emulation module, using the described end system emulation module that imports as first kind discrete events simulation node, with
And, by the chain circuit message configuration information in described ICD the described first kind discrete events simulation node configuration from
The event of dissipating.
Wherein, described end system emulation module includes: total monitoring module, application layer module, transport layer module, Internet mould
Block and link layer module；Described application layer module includes application level function module and application layer monitoring module, described transport layer mould
Block includes transport layer function and transport layer monitoring module, and described network layer module includes network layer function and Internet
Monitoring module, described link layer module includes link layer functionality module and link layer monitoring module；
Described end system emulation module, specifically for utilizing described first kind discrete event successively from described application layer module
Application level function module, the transport layer function of described transport layer module, the Network layer function mould of described network layer module
Block, the process of link layer functionality module transfer of described link layer module, emulate the internal AFDX message of described end system successively from
Application layer, transport layer, Internet, the process of link layer transfer, and, monitored by the application layer of described application layer module respectively
Module, the transport layer monitoring module of described transport layer module, the Internet monitoring module of described network layer module, described link layer
The link layer monitoring module of module collects the described discrete event simulation result each layer of transmission, and, by described chief inspector
Discrete event described in control module collection at the simulation result of each layer of transmission as the first performance parameter of described AFDX network.
Wherein, the AFDX message in described AFDX network includes: periodic messages and message aperiodic；
Accordingly, described discrete event includes: circulate, based on discrete clock and predetermined period, the discrete event produced, with
And, the discrete event produced based on normal distyribution function.
Wherein, described simulation result output module, export described AFDX specifically for the form with block diagram and/or form
First performance parameter of network and the second performance parameter of described AFDX network.
A kind of emulation mode of AFDX network, described method includes:
Obtain the ICD of the configuration information including described AFDX network, generate based on described ICD
End system simulation node as first kind discrete events simulation node, and based on described ICD the described first kind from
Dissipate event simulation node configuration discrete event, create switch simulation node as the based on described AFDX network of network topology
Two class discrete events simulation nodes, wherein, described discrete event is included in described first kind discrete events simulation node and imitates
Genuine first kind discrete event and transmission to described Equations of The Second Kind discrete events simulation node carry out the Equations of The Second Kind discrete event emulated；
Utilize described first kind discrete event successively from application layer, transmission by described first kind discrete events simulation node
Layer, Internet, the process of link layer transfer, emulate described AFDX network middle-end internal system AFDX message successively from application layer,
Transport layer, Internet, the process of link layer transfer, it is thus achieved that the first performance parameter of described AFDX network；
Utilized from described first kind discrete events simulation node-node transmission mistake by described Equations of The Second Kind discrete events simulation node
Described Equations of The Second Kind discrete event routing forwarding based on the switch rule come and virtual link configuration carry out the process forwarded, imitative
The AFDX message very come from described AFDX network middle-end system transfers described AFDX network the different port of switch it
Between carry out the process that forwards, it is thus achieved that the second performance parameter of described AFDX network；
The first performance parameter of described AFDX network and the secondary of described AFDX network is exported by the way of output preset
Can parameter.
Wherein, described based on described ICD generate end system simulation node as first kind discrete events simulation
Node, and configure discrete event based on described ICD at described first kind discrete events simulation node, including:
End system simulation node is generated discrete as the first kind by the device configuration information in described ICD
Event simulation node, by the chain circuit message configuration information in described ICD at described first kind discrete events simulation
Node configuration discrete event.
Wherein, described by described first kind discrete events simulation node utilize described first kind discrete event successively from should
By layer, transport layer, Internet, the process of link layer transfer, emulate described AFDX network middle-end internal system AFDX message successively
From application layer, transport layer, Internet, the process of link layer transfer, it is thus achieved that the first performance parameter of described AFDX network, including:
Utilize described first kind discrete event from described application layer to institute by described first kind discrete events simulation node
State the process of transport layer transmission, emulate the mistake that the internal AFDX message of described end system is transmitted to described transport layer from described application layer
Journey, and collect the simulation result that described first kind discrete event transmits to described transport layer from described application layer；
Utilize described first kind discrete event from described transport layer to institute by described first kind discrete events simulation node
State the process of network layer transport, emulate the internal AFDX message of described end system from described transport layer to the mistake of described network layer transport
Journey, and collect described first kind discrete event from described transport layer to the simulation result of described network layer transport；
Utilize described first kind discrete event from described Internet to institute by described first kind discrete events simulation node
State the process of link layer transfer, emulate the internal AFDX message of described end system from described Internet to the mistake of described link layer transfer
Journey, and collect described first kind discrete event from described Internet to the simulation result of described link layer transfer；
Collect simulation result that described first kind discrete event transmits to described transport layer from described application layer, described first
Class discrete event is from described transport layer to the simulation result of described network layer transport, and described first kind discrete event is from described
Internet to the simulation result of described link layer transfer as the first performance parameter of described AFDX network.
Wherein, the AFDX message in described AFDX network includes: periodic messages and message aperiodic；
Accordingly, described discrete event includes: circulate, based on discrete clock and predetermined period, the discrete event produced, with
And, the discrete event produced based on normal distyribution function.
Wherein, described the first performance parameter by the way of output described AFDX network of output preset and described AFDX network
The second performance parameter, including:
The first performance parameter of described AFDX network and described AFDX network is exported with the form of block diagram and/or form
Second performance parameter.
Technique scheme has the advantages that
The analogue system of the AFDX network that the present invention provides and emulation mode, use discrete event mechanism, by AFDX network
In end system be abstracted into discrete events simulation node, same, the switch in AFDX network is also abstracted into discrete event
Simulation node, is abstracted into the discrete event for discrete events simulation node by AFDX message, transmission based on discrete event and
Forwarding behavior, emulation AFDX message is at the transport behavior of end system, and the AFDX message transmitted from end system is exchanging
Forwarding behavior between machine different port, can obtain the performance parameter of AFDX network based on above-mentioned emulation.As can be seen here, the present invention
The analogue system of the AFDX network provided and emulation mode, utilize discrete events simulation to simulate the operation of true AFDX internet message
Mechanism, in that context it may be convenient to add up each discrete event and terminate the performance parameter of rear AFDX network, thus property based on AFDX network
Energy parameter optimization AFDX Design of Network System, this iteration cycle that system is designed reduces, meanwhile, the end system in analogue system
System emulation module (i.e. discrete events simulation node) is automatically imported based on ICD, when further reducing system checking
Between.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
The structural representation of the analogue system of the AFDX network that Fig. 1 provides for the embodiment of the present invention；
Fig. 2 is AFDX network of network topological diagram；
The structural representation of the analogue system middle-end system simulation module of the AFDX network that Fig. 3 provides for the embodiment of the present invention
Figure；
The schematic flow sheet of the emulation mode of the AFDX network that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
It is discrete in event that discrete event refers to that the state of event changes, and thinks that the generation of event is complete in moment
Become, in Discrete Event Simulation System, there is no other events between two events of adjacent generation, and AFDX network can be considered as
One discrete event system, therefore, it can utilize discrete event mechanism to emulate AFDX network.Based on this, the present invention is real
Execute example and provide the analogue system of a kind of AFDX network, refer to Fig. 1, it is shown that the structural representation of this analogue system, permissible
Including: file imports module 101, end system emulation module 102, switch emulation module 103 and simulation result output module
104。
File imports module 101, for obtaining the ICD of the configuration information including AFDX network, based on interface
Control file and import end system emulation module 102, using the end system emulation module 102 of importing as first kind discrete events simulation
Node, and configure discrete event based on ICD at first kind discrete events simulation node, and, based on AFDX network
Network topology create switch emulation module 103 as Equations of The Second Kind discrete events simulation node, based on AFDX network of network
Topology connection all of discrete events simulation node.
Referring to Fig. 2, it is shown that AFDX network of network topological diagram, AFDX network includes multiple end system and multiple exchange
Machine.Each end system in figure is abstracted into an end system emulation module, is a discrete events simulation node, and switch is same
Sample is such.
Wherein, discrete event is included in first kind discrete event and the biography that first kind discrete events simulation node carries out emulating
Transport to the Equations of The Second Kind discrete event that Equations of The Second Kind discrete events simulation node carries out emulating.
End system emulation module 102, is used for utilizing first kind discrete event successively from application layer, transport layer, Internet, chain
The transmitting procedure of road floor, emulation AFDX network middle-end internal system AFDX message is successively from application layer, transport layer, Internet, chain
The transmitting procedure of road floor, it is thus achieved that the first performance parameter of AFDX network.
Wherein, the first performance parameter of AFDX network includes: the message delay of end system, end system bandwidth in AFDX network
Etc. parameter.
Switch emulation module 103, for utilizing the Equations of The Second Kind discrete event transmitted from end system emulation module 102
Routing forwarding based on switch rule and virtual link configuration carry out the process forwarded, and emulation end system from AFDX network passes
The AFDX message of defeated mistake carries out the process forwarded in AFDX network between the different port of switch, it is thus achieved that the of AFDX network
Two performance parameters.
Wherein, the second performance parameter of AFDX network includes: AFDX message switch in AFDX network draws when forwarding
The forward delay that enters, AFDX message loading condition etc. on switch ports themselves, these parameters can assist designer's optimal change
The port assignment of machine.
Simulation result output module 104, for by preset the way of output output AFDX network the first performance parameter and
Second performance parameter of AFDX network.
The analogue system of the AFDX network that the embodiment of the present invention provides, uses discrete event mechanism, by AFDX network
End system is abstracted into end system emulation module as discrete events simulation node, same, is taken out by the switch in AFDX network
As becoming switch emulation module as discrete events simulation node, AFDX message is existed by discrete event in the transmission of end system
The Propagation Simulation of end system emulation module, is carried out the AFDX message transmitted from end system between switch different port
The process forwarded, regular and empty by the discrete event routing forwarding based on switch transmitted from end system emulation module
The process that plan link configuration carries out forwarding emulates, and can obtain the performance parameter of AFDX network based on above-mentioned simulation process.By
This is visible, the analogue system of the AFDX network that the embodiment of the present invention provides, and utilizes discrete events simulation to simulate true AFDX network
The operating mechanism of message, in that context it may be convenient to add up each discrete event and terminate the performance parameter of rear AFDX network, thus based on
The optimizing performance parameters AFDX Design of Network System of AFDX network, this iteration cycle that system is designed reduces, meanwhile, end system
System emulation module is automatically imported based on ICD, further reduces the proving time.
In the analogue system of the AFDX network of above-described embodiment offer, file imports the Interface Controller that module 101 obtains
File includes device configuration information and the chain circuit message configuration information of AFDX network.File imports module, passes through Interface Controller
Device configuration information in file imports end system emulation module, using the end system emulation module of importing as the discrete thing of the first kind
Part simulation node, by the chain circuit message configuration information in ICD the first kind discrete events simulation node configuration from
The event of dissipating.
Refer to Fig. 3, it is shown that in the analogue system of the AFDX network that above-described embodiment provides, end system emulation module
Structural representation, end system emulation module may include that total monitoring module 300, application layer module 301, transport layer module 302,
Network layer module 303 and link layer module 304.
Further, application layer module 301 includes application level function module 3011 and application layer monitoring module 3012, transmission
Layer module 302 includes transport layer function 3021 and transport layer monitoring module 3022, and network layer module 303 includes Internet merit
Energy module 3031 and Internet monitoring module 3032, link layer module 304 includes link layer functionality module 3041 and link layer prison
Control module 3042.
Concrete, end system emulation module, utilize discrete event successively from the application level function module of application layer module 301
3011, the transport layer function 3021 of transport layer module 302, the network layer function 3031 of network layer module 303, link
The process of link layer functionality module 3041 transmission of layer module 304, the internal AFDX message of emulation end system is successively from application layer, biography
Defeated layer, Internet, the process of link layer transfer, and, respectively by the application layer monitoring module 3012 of application layer module 301,
The transport layer monitoring module 3022 of transport layer module 302, the Internet monitoring module 3032 of network layer module 303, link layer mould
The link layer monitoring module 3042 of block 304 collects the discrete event simulation result each layer of transmission, and, by always monitoring mould
Block 300 collects the discrete event simulation result each layer of transmission as the first performance parameter of AFDX network.
Concrete, discrete event is in application level function module 3011, transport layer function 3021, network layer function
3031, during link layer functionality module 3041 transmission, the function of each functional module is as shown in the table:
From above-mentioned simulation process, by AFDX network, AFDX message is at application layer-transport layer-Internet-link layer
Transmission, change into discrete event application level function module, transport layer function, network layer function, link layer functionality
The transmission of module.The principle utilizing discrete events simulation is: in discrete events simulation, the operation of system is by chronological order
One group of sequence of events of arrangement represents, each event occurs at a time, represents that the state of system changes.Every by simulation
The change event of individual message status and the event transmitted on each link, obtain the load feelings of all message of single-end system
Condition, the forward delay parameter of all message.If loading or postponing too high, need to redesign message in ICD
Quantity and the period assignment of each message.
AFDX message in AFDX network includes: periodic messages and message aperiodic, the embodiment of the present invention utilize based on from
Dissipate the periodic messages in the discrete event simulation AFDX network of clock and predetermined period circulation generation, utilize based on normal distribution letter
Message aperiodic in the normal distyribution function discrete event simulation AFDX network that number produces, i.e. by the non-week in AFDX network
Phase Message Simulation becomes event aperiodic, arranges the normal distyribution function parameter of event each aperiodic simultaneously and produces probability.Week
Phase event and event aperiodic, according to clock progress, carry out discretization emulation.
In simulation process, aperiodic, event was according to its normal distribution and the generation that arranges producing probability, and simulation is truly
The scene of AFDX message collision in mobile system, i.e. by the emulation of message aperiodic be can get, aperiodic message generation
Affect produced by original periodic messages, and, aperiodic, whether the generation of message can cause the conflict of AFDX network, thus
Obtain current network and design load and the delay situation of all message.By the emulation of message aperiodic, obtain with the most airborne
The network behavior that network is consistent, can assess airborne AFDX network design more really.
The generation of each discrete event deduced by embodiment of the present invention clock, obtains the performance parameter of each discrete event,
In conjunction with the feature of AFDX network, obtained the critical performance parameters of AFDX network by emulation.
In order to more directly perceived, vivider showing emulates the performance parameter of the AFDX network obtained, so that designer is led to
Crossing the direction emulating clear and definite system design optimization, in the analogue system of the AFDX network that above-described embodiment provides, simulation result is defeated
Go out module, export the performance parameter of AFDX network with the form of block diagram and/or form.
The embodiment of the present invention additionally provides the emulation mode of a kind of AFDX network, refers to Fig. 4, it is shown that this emulation mode
Schematic flow sheet, may include that
Step S401: obtain the ICD of the configuration information including AFDX network.
Step S402: generate end system simulation node based on ICD and save as first kind discrete events simulation
Point, and configure discrete event based on ICD at first kind discrete events simulation node.
Step S403: create switch simulation node based on AFDX network of network topology and imitate as Equations of The Second Kind discrete event
True node.
Wherein, discrete event is included in first kind discrete event and the biography that first kind discrete events simulation node carries out emulating
Transport to the Equations of The Second Kind discrete event that Equations of The Second Kind discrete events simulation node carries out emulating.
Step S404: utilize first kind discrete event successively from application layer, biography by first kind discrete events simulation node
Defeated layer, Internet, the process of link layer transfer, emulation AFDX network middle-end internal system AFDX message is successively from application layer, biography
Defeated layer, Internet, the process of link layer transfer, it is thus achieved that the first performance parameter of AFDX network.
Wherein, the first performance parameter of AFDX network includes: the message delay of end system, end system bandwidth in AFDX network
Etc. parameter.
Step S405: utilized from first kind discrete events simulation node-node transmission mistake by Equations of The Second Kind discrete events simulation node
Equations of The Second Kind discrete event routing forwarding based on the switch rule and the virtual link configuration that come carry out the process that forwards, emulate from
The AFDX message that AFDX network middle-end system transfers comes carries out between the different port of switch forwarding in AFDX network
Process, it is thus achieved that the second performance parameter of AFDX network.
Wherein, the second performance parameter of AFDX network includes: AFDX message switch in AFDX network draws when forwarding
The forward delay that enters, AFDX message loading condition etc. on switch ports themselves, these parameters can assist designer's optimal change
The port assignment of machine.
Step S406: export the first performance parameter of AFDX network and the secondary of AFDX network by the way of output preset
Can parameter.
It is it should be noted that step S402 and step S403 can be performed by said sequence, it is possible to perform simultaneously, same,
Step S404 and step S405 can be performed by said sequence, it is possible to perform simultaneously, and the present embodiment is not to step S402 and step
The execution sequence of S403 is defined, and is not defined the execution sequence of step S404 and step S405, as long as including
State step and broadly fall into the scope of embodiment of the present invention protection.
The emulation mode of the AFDX network that the embodiment of the present invention provides, uses discrete event mechanism, by AFDX network
End system is abstracted into discrete events simulation node, same, and the switch in AFDX network is also abstracted into discrete events simulation
Node, is abstracted into the discrete event for discrete events simulation node, transmission based on discrete event and forwarding by AFDX message
Behavior, emulation AFDX message is at the transport behavior of end system, and the AFDX message transmitted from end system is at switch not
With the forwarding behavior between port, the performance parameter of AFDX network can be obtained based on above-mentioned emulation.As can be seen here, the present invention implements
The emulation mode of the AFDX network that example provides, utilizes discrete events simulation to simulate the operating mechanism of true AFDX internet message, can
Terminate the performance parameter of rear AFDX network with each discrete event of statistics easily, thus performance parameter based on AFDX network is excellent
Changing AFDX Design of Network System, this iteration cycle that system is designed reduces, and meanwhile, end system simulation node is based on interface control
File processed automatically generates, and further reduces the system proving time.
In the emulation mode of the AFDX network of above-described embodiment offer, the configuration information in ICD includes
The device configuration information of AFDX network and chain circuit message configuration information.Then generate end system simulation node based on ICD
As first kind discrete events simulation node and discrete in the configuration of first kind discrete events simulation node based on ICD
Event, including: generate end system simulation node as the discrete thing of the first kind by the device configuration information in ICD
Part simulation node, by the chain circuit message configuration information in ICD the first kind discrete events simulation node configuration from
The event of dissipating.
In the emulation mode of the AFDX network of above-described embodiment offer, utilized by first kind discrete events simulation node
First kind discrete event successively from application layer, transport layer, Internet, link layer transfer process simulation AFDX network end system
Internal AFDX message is successively from application layer, transport layer, Internet, the process of link layer transfer, it is thus achieved that the primary of AFDX network
Energy parameter, including:
The mistake that first kind discrete event transmits to transport layer is utilized from application layer by first kind discrete events simulation node
Journey, the process that the internal AFDX message of emulation end system is transmitted to transport layer from application layer, and collect first kind discrete event from answering
The simulation result transmitted to transport layer with layer；
Utilize first kind discrete event from transport layer to the mistake of network layer transport by first kind discrete events simulation node
Journey, emulates the internal AFDX message of end system from transport layer to the process of network layer transport, and collects first kind discrete event from biography
Defeated layer is to the simulation result of network layer transport；
Utilize first kind discrete event from Internet to the mistake of link layer transfer by first kind discrete events simulation node
Journey, emulates the internal AFDX message of end system from Internet to the process of link layer transfer, and collects first kind discrete event from net
Network layers is to the simulation result of link layer transfer；
The simulation result that transmitted to transport layer from application layer by first kind discrete event, first kind discrete event are from transport layer
To the simulation result of network layer transport, and first kind discrete event from Internet to the simulation result conduct of link layer transfer
First performance parameter of AFDX network.
In the emulation mode of the AFDX network of above-described embodiment offer, the AFDX message in AFDX network includes that the cycle disappears
Breath and message aperiodic.Accordingly, discrete event includes: circulate, based on discrete clock and predetermined period, the discrete event produced,
And, the discrete event produced based on normal distyribution function.
In order to more directly perceived, vivider showing emulates the performance parameter of the AFDX network obtained, so that designer is led to
Cross the direction emulating clear and definite system design optimization, in the emulation mode of the AFDX network that above-described embodiment provides, defeated by preset
Go out mode and export the first performance parameter of AFDX network and the second performance parameter of AFDX network, including: with block diagram and/or table
First performance parameter of the form output AFDX network of lattice and the second performance parameter of AFDX network.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.
In several embodiments provided herein, it should be understood that disclosed method, device and equipment, permissible
Realize by another way.Such as, device embodiment described above is only schematically, such as, and described unit
Dividing, be only a kind of logic function and divide, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or
The coupling each other discussed or direct-coupling or communication connection can be by between some communication interfaces, device or unit
Connect coupling or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme
's.It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be each
Unit is individually physically present, it is also possible to two or more unit are integrated in a unit.
If described function is using the form realization of SFU software functional unit and as independent production marketing or use, permissible
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is the most in other words
The part contributing prior art or the part of this technical scheme can embody with the form of software product, this meter
Calculation machine software product is stored in a storage medium, including some instructions with so that a computer equipment (can be individual
People's computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.
And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. the analogue system of an AFDX network, it is characterised in that including: file imports module, end system emulation module, exchange
Machine emulation module and simulation result output module；
Described file imports module, for obtaining the ICD of the configuration information including described AFDX network, based on institute
State ICD and import described end system emulation module, using discrete as the first kind for the described end system emulation module imported
Event simulation node, and configure discrete event based on described ICD at described first kind discrete events simulation node,
And, create described switch emulation module based on described AFDX network of network topology and save as Equations of The Second Kind discrete events simulation
Point, wherein, described discrete event is included in the first kind discrete event that described first kind discrete events simulation node carries out emulating
The Equations of The Second Kind discrete event emulated is carried out with transmission extremely described Equations of The Second Kind discrete events simulation node；
Described end system emulation module, be used for utilizing described first kind discrete event successively from application layer, transport layer, Internet,
The transmitting procedure of link layer, emulates described AFDX network middle-end internal system AFDX message successively from application layer, transport layer, network
Layer, the transmitting procedure of link layer, it is thus achieved that the first performance parameter of described AFDX network；
Described switch emulation module, for utilizing the Equations of The Second Kind discrete event base transmitted from described end system emulation module
Routing forwarding rule and virtual link in switch configure the process carrying out forwarding, emulation end system from described AFDX network
The AFDX message transmitted carries out the process forwarded in described AFDX network between the different port of switch, it is thus achieved that described
Second performance parameter of AFDX network；
Described simulation result output module, for by preset the way of output export described AFDX network the first performance parameter and
Second performance parameter of described AFDX network.
The analogue system of AFDX network the most according to claim 1, it is characterised in that described file imports module, specifically
For importing described end system emulation module by the device configuration information in described ICD, the described end that will import
System simulation module as first kind discrete events simulation node, and, by the chain circuit message in described ICD
Configuration information configures discrete event at described first kind discrete events simulation node.
The analogue system of AFDX network the most according to claim 1, it is characterised in that described end system emulation module bag
Include: total monitoring module, application layer module, transport layer module, network layer module and link layer module；Described application layer module includes
Application level function module and application layer monitoring module, described transport layer module includes transport layer function and transport layer monitoring mould
Block, described network layer module includes network layer function and Internet monitoring module, and described link layer module includes link layer
Functional module and link layer monitoring module；
Described end system emulation module, specifically for utilizing described first kind discrete event answering from described application layer module successively
With layer function module, the transport layer function of described transport layer module, the network layer function of described network layer module, institute
State the process of the link layer functionality module transfer of link layer module, emulate the internal AFDX message of described end system successively from application
Layer, transport layer, Internet, the process of link layer transfer, and, monitor mould by the application layer of described application layer module respectively
Block, the transport layer monitoring module of described transport layer module, the Internet monitoring module of described network layer module, described link layer mould
The link layer monitoring module of block collects the described discrete event simulation result each layer of transmission, and, by described total monitoring
Discrete event described in module collection at the simulation result of each layer of transmission as the first performance parameter of described AFDX network.
The analogue system of AFDX network the most according to claim 1, it is characterised in that the AFDX in described AFDX network disappears
Breath includes: periodic messages and message aperiodic；
Accordingly, described discrete event includes: circulate, based on discrete clock and predetermined period, the discrete event produced, and, base
In the discrete event that normal distyribution function produces.
5. according to the analogue system of the AFDX network described in any one in claim 1-4, it is characterised in that described emulation is tied
Really output module, specifically for exporting the first performance parameter and the institute of described AFDX network with the form of block diagram and/or form
State the second performance parameter of AFDX network.
6. the emulation mode of an AFDX network, it is characterised in that described method includes:
Obtain the ICD of the configuration information including described AFDX network, generate end system based on described ICD
System simulation node is as first kind discrete events simulation node, and based on described ICD in the discrete thing of the described first kind
Part simulation node configuration discrete event, creates switch simulation node as Equations of The Second Kind based on described AFDX network of network topology
Discrete events simulation node, wherein, described discrete event is included in what described first kind discrete events simulation node carried out emulating
First kind discrete event, and, transmission to described Equations of The Second Kind discrete events simulation node carries out the Equations of The Second Kind discrete event emulated；
By described first kind discrete events simulation node utilize described first kind discrete event successively from application layer, transport layer,
Internet, the process of link layer transfer, emulate described AFDX network middle-end internal system AFDX message successively from application layer, transmission
Layer, Internet, the process of link layer transfer, it is thus achieved that the first performance parameter of described AFDX network；
By described Equations of The Second Kind discrete events simulation node, utilization comes from described first kind discrete events simulation node-node transmission
Described Equations of The Second Kind discrete event routing forwarding based on switch rule and virtual link configuration carry out the process that forwards, emulate from
The AFDX message that described AFDX network middle-end system transfers comes is entered between the different port of switch in described AFDX network
The process that row forwards, it is thus achieved that the second performance parameter of described AFDX network；
The first performance parameter and the second performance ginseng of described AFDX network of described AFDX network is exported by the way of output preset
Number.
The emulation mode of AFDX network the most according to claim 6, it is characterised in that described based on described Interface Controller literary composition
Part generates end system simulation node as first kind discrete events simulation node, and based on described ICD described the
One class discrete events simulation node configuration discrete event, including:
End system simulation node is generated as first kind discrete event by the device configuration information in described ICD
Simulation node, by the chain circuit message configuration information in described ICD at described first kind discrete events simulation node
Configuration discrete event.
The emulation mode of AFDX network the most according to claim 6, it is characterised in that described discrete by the described first kind
Event simulation node utilizes described first kind discrete event successively from application layer, transport layer, Internet, the mistake of link layer transfer
Journey, emulates described AFDX network middle-end internal system AFDX message successively from application layer, transport layer, Internet, link layer transfer
Process, it is thus achieved that the first performance parameter of described AFDX network, including:
Utilize described first kind discrete event from described application layer to described biography by described first kind discrete events simulation node
The process of defeated layer transmission, emulates the process that the internal AFDX message of described end system is transmitted to described transport layer from described application layer,
And collect the simulation result that described first kind discrete event transmits to described transport layer from described application layer；
Utilize described first kind discrete event from described transport layer to described net by described first kind discrete events simulation node
The process of network layers transmission, emulates the internal AFDX message of described end system from described transport layer to the process of described network layer transport,
And collect described first kind discrete event from described transport layer to the simulation result of described network layer transport；
Utilize described first kind discrete event from described Internet to described chain by described first kind discrete events simulation node
The process of road floor transmission, emulates the internal AFDX message of described end system from described Internet to the process of described link layer transfer,
And collect described first kind discrete event from described Internet to the simulation result of described link layer transfer；
Collect the simulation result that described first kind discrete event transmits to described transport layer from described application layer, the described first kind from
The event of dissipating is from described transport layer to the simulation result of described network layer transport, and described first kind discrete event is from described network
Layer to the simulation result of described link layer transfer as the first performance parameter of described AFDX network.
The emulation mode of AFDX network the most according to claim 6, it is characterised in that the AFDX in described AFDX network disappears
Breath includes: periodic messages and message aperiodic；
Accordingly, described discrete event includes: circulate, based on discrete clock and predetermined period, the discrete event produced, and, base
In the discrete event that normal distyribution function produces.
10. according to the emulation mode of the AFDX network described in any one in claim 6-9, it is characterised in that described by pre-
If the way of output export the first performance parameter of described AFDX network and the second performance parameter of described AFDX network, including:
Form with block diagram and/or form exports first performance parameter and the second of described AFDX network of described AFDX network
Performance parameter.
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