CN104348685B - A kind of airborne AFDX Network Data Controls method - Google Patents
A kind of airborne AFDX Network Data Controls method Download PDFInfo
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- CN104348685B CN104348685B CN201410719301.XA CN201410719301A CN104348685B CN 104348685 B CN104348685 B CN 104348685B CN 201410719301 A CN201410719301 A CN 201410719301A CN 104348685 B CN104348685 B CN 104348685B
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Abstract
The invention belongs to computer software design technical field, and in particular to the airborne AFDX Network Data Controls method of large aircraft synthesization modular avionics system.The method of the present invention comprises the following steps：1) user determines to need the data content monitored according to aerial mission；2) data content monitored as needed, configuration status monitoring table；3) monitoring data needed for receiving, data are handled using the mechanism of two level screening and three-level caching；4) user downloads the file of storage from high-capacity module, and the data in file are monitored to aircraft bus network.The method according to the invention meets a variety of monitoring demands in ADFX networks, and realizes and the user that accurately captures and provide to of mass data frame in AFDX networks is analyzed to realize monitoring.
Description
Technical field
The invention belongs to computer software design technical field, and in particular to large aircraft synthesization modular avionics
The airborne AFDX Network Data Controls method of system.
Background technology
Avionic full-duplex switched-type Ethernet (Avionics Full Duplex Switched Ethernet,
AFDX), it is the network of a kind of full duplex, High Data Rate, dual redundant, there is higher reliability and bandwidth and lower prolong
Late, and overcome that wiring is complicated, weight is excessive, safeguards and retrofits the shortcomings of difficult.AFDX interconnects as new air net
Technology, application of being succeeded on the aircrafts such as Air Passenger A380/400M, Boeing B787, turn into current international mainstream aviation electricity
The basis of sub-network interconnection.
Various initial parameters in the capture of data monitoring function and storage aircraft flight are (at airborne comprehensive core
Computer is managed to capture and store the various data in aircraft bus network), send earth station or flight back in real time by Data-Link
Earth station is downloaded to after end to be analyzed and processed, so as to find potential safety hazard, carry out trend prediction raising, flight operation peace
Full property and instruct the design of aircraft and safeguard etc., it has also become the generally acknowledged raising safety management level of International Civil Aviation, ensure flight
A science, the effective technological means of safety.
The application time of domestic airborne avionics system AFDX networks is shorter, also locates for the data monitoring of AFDX networks
In the starting stage, fairly perfect solution and product are not yet formed.
The content of the invention
In order to solve the problems, such as in background technology, the present invention, which proposes one kind, can meet a variety of monitoring demands, and
And monitoring data needed for accurate capture of the realization to mass data frame in AFDX networks supplies the airborne AFDX nets that user is monitored
Network data monitoring method.
The concrete technical scheme of the present invention：
A kind of airborne AFDX Network Data Controls method, its feature exist, comprised the following steps：
1) user determines to need the data content monitored according to aerial mission；
2) data content monitored as needed, configuration status monitoring table, the condition monitoring table include virtual link number
With UDP source port number；
3) monitoring data needed for receiving simultaneously is handled data；
3.1) all data frames of the capture-port capture aircraft bus network of MEM modules；
3.2) the one-level screening of data frame；
Judge whether data frame is data into AFDX interchangers, if into the data of AFDX interchangers, is then retained,
And put it into the first buffer area；If not into the data of AFDX interchangers, then delete；
3.3) the two level screening of data frame；
The virtual link number and UDP of data are parsed from the data frame being put into first order buffer area
Source port number source port number, judge whether the data virtual link No. and number of users monitored with the needs recorded in condition monitoring table
Match, if the match is successful, retain, and be put into second buffering area according to datagram protocol source port number source port number；If it fails to match,
Then abandon；
3.4) storage of data frame；
3.4.1) the establishment file in high-capacity storage module, the file include file header data and file content；Institute
Stating file header data includes file creation time, captures channel number, Sortie information；
3.4.2) to step 3.4.1) in file, write file content；
The read data frame from the buffer area of the second level, it is put into after adding frame head and frame number in third level buffer area；Treat
Data accumulation in three-level buffer area is to writing interface and be written to the data in third level buffering area more than or equal to being called after 64KB
In file, each write operation writes 64KB data；
3.4.3) create new file
Perform step 3.4.2) until step 3.4.1) file content is when reaching 1GB；New file is created, continues executing with step
Rapid 3.4.2)；When perform step 3.4.3) new file create after, original continues to write to file content, when original data reach
During 1.001GB, original stops write-in file content；New file continues to write to file content；
3.4.4 step 3.4.1) is repeated) to step 3.4.3), until data frame all writes in second buffering area；
4) user downloads the file of storage from high-capacity storage module, and the data in file are to aircraft bus network
Be monitored.
This method is provided with mutually redundant two-way AFDX interchangers on aircraft bus network and corresponding data are caught
Passage is obtained, and for the separate three-level buffering area of two paths of data capture Path Setup；Step 3.1) is first determined whether and selected
Wherein data capture passage all the way, carries out the reception of data frame.
Above-mentioned steps 3) in after storage file in high-capacity storage module writes all over, file deletion need to be carried out；File is deleted
Performed by one of two kinds of principles：
Principle one：Sent by user and delete instruction, specified file is deleted；
Principle two：Comprehensive core processing computer is automatically deleted according to the capacity threshold of setting to file.
The beneficial effects of the invention are as follows：
1st, the mechanism that method of the invention is screened using two-stage realizes the customizable of monitoring parameter, with meet it is various not
Same monitoring demand, has very high flexibility, and reduce data volume to be analyzed.
2nd, the present invention coordinates two-stage Filtering system to realize to big flow number in AFDX networks using the mode of three-level buffering area
According to the accurate acquisition of the stable storage and data of frame.
3rd, present invention monitoring file is stored and named according to respective rule, there is provided user interface, facilitates ground to download
Analyzed with being searched after download.
4th, method of the invention can be realized is monitored to two-way AFDX network datas, backups each other.
Brief description of the drawings
Accompanying drawing 1 integrates the structure diagram of core processing computer；
The flow chart of data processing block diagram of accompanying drawing 2.
Embodiment
The present invention proposes that the basis of airborne AFDX Network Data Controls method is as aircraft airborne centralized maintenance system
A part, reside among airborne comprehensive core processing computer, and passage and AFDX interchangers are captured by exclusive data
Capture-port connects, so as to monitor the various data of interaction in aircraft bus network in real time.
Understand that comprehensive core processing computer mainly includes following module and formed with reference to Fig. 1：AFDX switch modules
(as the Centroid in AFDX networks, connecting each terminal system in network), power module are (for comprehensive core processing meter
Modules power supply in calculation machine), general purpose processing block (runs various application programs, completes avionics system synthesis core processing
Function), graph image module (operation application program) related to graph image and high-capacity storage module be (comprising one piece
General purpose processing block and one piece of Large Copacity electronics disk module) etc.；
Data frame on the real-time data acquisition bus network of this method, and data frame is parsed and screened, then according to phase
The rule answered is stored and managed to data frame, meanwhile, provide a user the download of monitoring data and delete service.
The inventive method concrete technical scheme is described with reference to Fig. 2：
This method comprises the following steps：
Step 1) user determines to need the data content monitored according to aerial mission；
The data content that step 2) monitors as needed, configuration status monitoring table, condition monitoring table include No. VL and source UDP
Number, follow-up data needs to be screened according to condition monitoring table；
Monitoring data needed for step 3) reception is simultaneously handled data；
All data frames of the capture-port capture aircraft bus network of step 3.1) high-capacity storage module；
The one-level screening of step 3.2) data frame；
Judge whether data frame is data into AFDX interchangers, if into the data of AFDX interchangers, is then retained,
And put it into the first buffer area；If not into the data of AFDX interchangers, then delete；
The two level screening of step 3.3) data frame；
The virtual link number (No. VL) and user data of data are parsed from the data frame being put into first order buffer area
Datagram protocol source port number (source UDP), judge whether the data virtual link No. monitored with the needs recorded in condition monitoring table
(No. VL) and UDP source port number (source UDP) match, if the match is successful, retain, and it is slow to be put into second
Rush area；If it fails to match, abandon；
The storage of step 3.4) data frame；
3.4.1) the establishment file in high-capacity storage module, the file include file header data and file content；Institute
Stating file header data includes file creation time, captures channel number, Sortie information, writes above- mentioned information during establishment file
File header data；
3.4.2) to step 3.4.1) in file, write file content；
The read data frame from the buffer area of the second level, it is put into after adding frame head and frame number in third level buffer area；Treat
Data accumulation in three-level buffer area is to writing interface and be written to the data in third level buffering area more than or equal to being called after 64KB
In file；
3.4.3) create new file
Perform step 3.4.2) until step 3.4.1) file content is when reaching 1GB；New file is created, continues executing with step
Rapid 3.4.2)；
3.4.4 step 3.4.1) is repeated) to step 3.4.3), until data frame all writes in second buffering area；
Step 4) user downloads the file of storage from high-capacity storage module, and the data in file are to aircraft bus
Network is monitored.
Special feature is：After the storage file in step 3) is write all over, file deletion need to be carried out；File is deleted and presses two kinds of originals
One of then perform：
Principle one：Sent by user and delete instruction, specified file is deleted；Specifically：Under the state of ground, use
Family completes to send to high-capacity storage module after data are downloaded using PMART deletes instruction, is run in module【User instruction connects
Receive processing task】Selectively deletion file operation is carried out according to instruction after receiving.
Principle two：Comprehensive core processing computer is automatically deleted according to the capacity threshold of setting to file；Specifically：
In aircraft flight, after file record capacity reaches certain threshold value, software automatically according to first recording, enter by the principle first deleted
Part of composing a piece of writing is deleted.To realize this function, the file of a record existing file name is deposited in file system, is carried out every time new
After document creation, the filename of establishment recorded to the end of this document, when carrying out deletion file operation every time, opened from this document
Filename is read at head to be deleted, and initializes the presence flag bit reset of file name, system every time after deleting
Cheng Zhong, this document is read, there will be the filename for being masked as " 0 " to reject from file.So filename existing for working service
The mode of list realizes the function that file is deleted in order, All Files in traversal file system when avoiding deletion, reads file
Creation time information carries out selecting mode this time-consuming and dependent on system time again.
Explanation is needed exist for, method of the invention is provided with mutually redundant two-way AFDX on aircraft bus network
Interchanger and corresponding data capture passage, and for the separate three-level buffering area of two paths of data capture Path Setup；
Step 3.1) first determines whether and selected wherein data capture passage all the way, carries out the reception of data frame.
In addition, terrestrial user interface and the function of processing are also required to illustrate, what user instruction was received and handled
Function, per 500ms periodic duties, has checked whether that user instruction is sent, the instruction in the form of task when each cycle starts
Source have at two, transmitted by the PMART equipment on ground or transmitted by the centralized maintenance system on machine.If so, then
Corresponding operation, including the file generic operation such as file download, file deletion are performed according to instruction, MBIT is performed, obtains PUBIT knots
Other operations of the control such as fruit generic operation and condition monitoring table update etc..
Claims (4)
1. a kind of airborne AFDX Network Data Controls method, its feature exist, comprised the following steps：
1) user determines to need the data content monitored according to aerial mission；
2) data content monitored as needed, configuration status monitoring table, the condition monitoring table include virtual link number and used
User data datagram protocol source port number；
3) monitoring data needed for receiving simultaneously is handled data；
3.1) all data frames of the capture-port capture aircraft bus network of high-capacity storage module；
3.2) the one-level screening of data frame；
Judge whether data frame is data into AFDX interchangers, if into the data of AFDX interchangers, is then retained, and will
It is put into the first buffer area；If not into the data of AFDX interchangers, then delete；
3.3) the two level screening of data frame；
The virtual link number and UDP source of data are parsed from the data frame being put into first order buffer area
Slogan, judge whether data virtual link No. and the UDP source monitored with the needs recorded in condition monitoring table
Slogan matches, if the match is successful, retains, and be put into second buffering area；If it fails to match, abandon；
3.4) storage of data frame；
3.4.1) the establishment file in high-capacity storage module, the file include file header data and file content；The text
Part head data include file creation time, capture channel number, Sortie information；
3.4.2) to step 3.4.1) in file, write file content；
The read data frame from the buffer area of the second level, it is put into after adding frame head and frame number in third level buffer area；Treat the third level
Data accumulation in buffer area is to writing interface the data in third level buffering area are written into file more than or equal to being called after 64KB
In；
3.4.3) create new file
Perform step 3.4.2) until step 3.4.1) file content is when reaching 1GB；New file is created, continues executing with step
3.4.2)；
3.4.4 step 3.4.1) is repeated) to step 3.4.3), until data frame all writes in second buffering area；
4) user downloads the file of storage from high-capacity storage module, and the data in file are entered to aircraft bus network
Row monitoring.
2. airborne AFDX Network Data Controls method according to claim 1, it is characterised in that：This method is in aircraft bus
Mutually redundant two-way AFDX interchangers and corresponding data capture passage are provided with network, and is captured for two paths of data
The separate three-level buffering area of Path Setup；Step 3.1) first determines whether and selected wherein data capture passage all the way, carries out
The reception of data frame.
3. airborne AFDX Network Data Controls method according to claim 1, it is characterised in that：Large Copacity is deposited in step 3)
After storage file in storage module is write all over, file deletion need to be carried out；File is deleted to be performed by one of two kinds of principles：
Principle one：Sent by user and delete instruction, specified file is deleted；
Principle two：Comprehensive core processing computer is automatically deleted according to the capacity threshold of setting to file.
4. airborne AFDX Network Data Controls method according to claim 1, it is characterised in that：It is described to work as execution step
3.4.3 after) new file creates, original continues to write to file content, and when original data reach 1.001GB, original is stopped
Only write file content；New file continues to write to file content.
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| FR3045256B1 (en) * | 2015-12-14 | 2017-12-08 | Airbus Operations Sas | ONBOARD COMMUNICATION NETWORK OF A VEHICLE AND SUBSCRIBER OF SUCH A COMMUNICATION NETWORK |
| CN107317874B (en) * | 2017-07-26 | 2020-05-19 | 中国航空工业集团公司西安飞机设计研究所 | Network design method of airborne multi-topology double-exchange structure |
| CN107517156A (en) * | 2017-09-30 | 2017-12-26 | 江西洪都航空工业集团有限责任公司 | Avionics system based on ARINC664 PART7 |
| CN111290305B (en) * | 2018-12-06 | 2021-05-04 | 航天科工惯性技术有限公司 | Multi-channel digital quantity acquisition and processing anti-collision method and system for multiple sets of inertial navigation systems |
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| CN101834751B (en) * | 2010-03-19 | 2012-10-10 | 北京经纬恒润科技有限公司 | Aviation full-duplex exchange Ethernet monitoring processing system and method thereof |
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