CN102143185B - Data transmission method and data transmission device - Google Patents

Data transmission method and data transmission device Download PDF

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Publication number
CN102143185B
CN102143185B CN201110080897.XA CN201110080897A CN102143185B CN 102143185 B CN102143185 B CN 102143185B CN 201110080897 A CN201110080897 A CN 201110080897A CN 102143185 B CN102143185 B CN 102143185B
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frame
data
afdx
arinc429
transmitted
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CN102143185A (en
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张博
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Beijing Runke General Technology Co Ltd
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Beijing Jingwei Hirain Tech Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H04L9/3242Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Communication Control (AREA)

Abstract

The invention provides a kind of data transmission method and data transmission device, use in order to solve in prior art the problem that the efficiency of transfer of data between the device of ARINC429 and AFDX two kinds of agreements is lower respectively.The method comprises: the Frame receiving the first form; The transmission destination mark of the payload data in the Frame of the first form one or more described received and this payload data is added in the Frame of the second form; Send the Frame of described the second form.Adopt technical scheme of the present invention, the problem that between the device contributing to solving ARINC429 and AFDX two kinds of agreements, the efficiency of transfer of data is lower, thus realize the efficient conversion of avlonlcs data, improve the utilance of systematic function and bandwidth.

Description

Data transmission method and data transmission device
Technical field
The present invention relates to a kind of data transmission method and data transmission device.
Background technology
Avionics device plays crucial device comprehensive function for the aircraft in modern times, extremely important for the various aspects of performance improving aircraft.Avionics device for core, is integrated with a large amount of airborne equipments as mission computer, air data unit, inertial navigation unit, plug-in management devices, Ridio communications device, friend or foe indicator etc. with synthetic display and control device.But traditional MIL-1553B or ARINC429 bussing technique also exists the defects such as exchanges data speed is slow, cable is complicated.
In the avionics device of a new generation, a large amount of airborne massaging device such as such as mission computer, radar installations, guider, radio communication etc. will adopt if the high speed of AFDX, the New Bus of high bandwidth are as backbone network, and is connected with each separating device of periphery.The processing capacity of separating device equipment is integrated in kernel processing device, and remaining ancillary equipment then progressively deteriorates to transducer or actuator, these distal portion devices by the low speed bus such as ARINC429 with by gateway and high-speed main network interconnected.
AFDX (AvionicsFullDuplexSwitchedEthernet) is the RTP based on ethernet technology, is the Part VII of ARINC664 agreement, and this bus speed is 10M/100Mbps, and effective payload is 1-1472Byte.ARINC429 bus speed is 12.5Kbps or 100Kbps, and effective payload is 4Byte.Therefore, when carrying out intercommunication between, need to repack code stream.
Fig. 1 is the schematic diagram of the data format according to ARINC429 in prior art.According to ARING429 bus regulation, each word format forms by 32: 1-8 position is label position (LABEL).9-10 position is source terminal identification (SDI).11-28 or 29 is data group (DataField), and the type according to word can be defined as 11 to 28 or 11 to 29.Representated by it is determined particular data.29 to 30 or 31 is sign condition matrix position (SSM), is 29 or 30 to 31 according to the style number of word.It points out the characteristic of data.32 is parity check bit (P), and whether it is effective for checking the data of transmission.
Fig. 2 is the schematic diagram of the data format according to AFDX in prior art.According to AFDX bus regulation, jointly form synchronous head by object MAC, source MAC, frame type, IP head and UDP head, payload number is between 1-1471Bytes, and rear portion transmits Sequence Number by one and CRC check forms.
At present, prior art provides method discrete magnitude, analog signals being converted to ARINC429, but the conversion between ARINC429 and AFDX two kinds of agreements does not also have good solution.The subject matter of existence is that bus speed difference is large, data frame length difference is large, is very easy to the bandwidth of waste AFDX bus, and the meeting clogging networks when frequent transitions ARINC429 data are held to AFDX, affects the balance of whole network even.Fig. 3 is the device of ARINC429 and the AFDX intercommunication of simplification according to prior art.
As shown in Figure 3, when carrying out intercommunication between the terminal 4 using the terminal 1 of ARINC429 signal and use AFDX signal, first, gateway is by each terminal of poll, after the data of receiving terminal 4, whether the terminal of data to all use ARINC429 signals is broadcasted by gateway, sent to control oneself by each concrete terminal judges data; Otherwise, after using the terminal 1 of ARINC429 signal to receive data, wait for gateway poll, and data mail to terminal 4, thus complete the process of two-way communication.Well imagine that the broadcast of data can cause the bandwidth burden of terminal 1/2/3, and terminal 4 is when the data-triggered of multiple low speed terminal, to ceaselessly log-on data process of transmitting, and effective payload of AFDX signal may not be filled up by each payload number, thus waste effective bandwidth.
In the prior art, use the efficiency of transfer of data between the device of ARINC429 and AFDX two kinds of agreements lower respectively, for this problem, not yet propose effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of data transmission method and data transmission device, uses to solve in prior art the problem that the efficiency of transfer of data between the device of ARINC429 and AFDX two kinds of agreements is lower respectively.
To achieve these goals, according to an aspect of the present invention, a kind of data transmission method is provided.
Data transmission method of the present invention comprises: the Frame receiving the first form; The transmission destination mark of the payload data in the Frame of the first form one or more described received and this payload data is added in the Frame of the second form; Send the Frame of described the second form.
Further, before sending the Frame of described the second form, also comprise: the timestamp of the Frame of the first form one or more described received is added in the Frame of the second form.
Further, the Frame of the first form described comprises ARINC429 Frame; The Frame of described the second form comprises AFDX Frame.
According to a further aspect in the invention, a kind of data transmission device is provided.
Data transmission device of the present invention comprises: one or more receiver module, and described receiver module is for receiving the Frame of the first form; Processing module, the transmission destination mark for the payload data in the Frame of the first form one or more described that received by described receiver module and this payload data is added in the Frame of the second form; Sending module, for sending the Frame of described the second form.
Further, described processing module is also added in the Frame of described the second form for the timestamp of the Frame of the first form one or more described received by described receiver module.
Further, described receiver module is also for receiving ARINC429 Frame; Described processing module is also added in AFDX Frame for the transmission destination mark of the payload data in one or more ARINC429 Frames of being received by described receiver module and this payload data; Described sending module is also for sending AFDX Frame.
According to another aspect of the invention, a kind of data transmission method is provided.
Data transmission method of the present invention comprises: the Frame receiving the second form, comprises one or more transfer of data destination mark and one or more groups data to be transmitted in the Frame of described the second form; From the Frame of described the second form, extract described data to be transmitted, more then send according to the Frame that described transfer of data destination mark is encapsulated as the first form one or more respectively.
Further, the Frame of the first form described comprises ARINC429 Frame; The Frame of described the second form comprises AFDX Frame, and described data to be transmitted is encapsulated in the payload part of AFDX Frame.
According to another aspect of the invention, a kind of data transmission device is provided.
Data transmission device of the present invention comprises: receiver module, for receiving the Frame of the second form, comprises one or more transfer of data destination mark and one or more groups data to be transmitted in the Frame of described the second form; Extraction module, is then encapsulated as the Frame of the first form one or more respectively according to described transfer of data destination mark for extracting described data to be transmitted in the Frame from described the second form; Sending module, for sending the Frame of described extraction module encapsulation.
Further, described receiver module, also for receiving AFDX Frame, comprises one or more transfer of data destination mark and one or more groups data to be transmitted in described AFDX Frame; Then described extraction module is also encapsulated as one or more ARINC429 Frame according to described transfer of data destination mark respectively for extracting described data to be transmitted from described AFDX Frame.
According to technical scheme of the present invention, by extracting a kind of payload information of format data frame, obtain the destination and data that send; Or multiple certain format data frame encapsulation is inserted the payload part of another kind of format data frame, the data of two kinds of forms can directly be changed, and do not need complicated network negotiate process, the problem that between the device contributing to solving ARINC429 and AFDX two kinds of agreements, the efficiency of transfer of data is lower, thus realize the efficient conversion of avlonlcs data, improve the utilance of systematic function and bandwidth.
Accompanying drawing explanation
Figure of description is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the data format according to ARINC429 in prior art;
Fig. 2 is the schematic diagram of the data format according to AFDX in prior art;
Fig. 3 is the device of ARINC429 and the AFDX intercommunication of simplification according to prior art;
Fig. 4 is the flow chart of the key step of data transmission method according to the embodiment of the present invention;
Fig. 5 is the schematic diagram of AFDX packet by ARINC429 data encapsulation according to the embodiment of the present invention;
Fig. 6 is the schematic diagram of the data transmission device according to the embodiment of the present invention;
Fig. 7 is the schematic diagram of the another kind of data transmission method according to the embodiment of the present invention;
Fig. 8 is the schematic diagram extracting ARINC429 data from AFDX Frame according to the embodiment of the present invention;
Fig. 9 is the schematic diagram of the another kind of data transmission device according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 4 is the flow chart of the key step of data transmission method according to the embodiment of the present invention, and as shown in Figure 4, the method mainly comprises the steps:
Step S41: the Frame receiving the first form;
Step S43: the transmission destination mark of the payload data in the Frame of the first form one or more received and this payload data is added in the Frame of the second form;
Step S45: the Frame sending the second form.
According to above-mentioned steps, the Frame of the first form multiple can be realized to be encapsulated in the Frame of the second form then send, like this, based on two kinds of agreements thus use two kinds of forms data system between when communicating data, do not need network negotiate process; And the Frame of the first form multiple can be incorporated in the Frame of the second form and send, and effectively make use of bandwidth, therefore contribute to improving the efficiency of the data among systems transmission using two kinds of agreements respectively.
The flow process of Fig. 4 can be applied in the exchanges data of ARINC429 bus termination and AFDX bus termination.Fig. 5 is the schematic diagram of AFDX packet by ARINC429 data encapsulation according to the embodiment of the present invention.Transmitting terminal be ARINC429 bus termination, receiving terminal is in the data transmission procedure of AFDX bus termination, gateway is changed the data received, and Reseal also forwards, and detailed process is as follows:
(1) all ARINC429 bus receiving ports receive data, and record the data arrival moment;
(2) according to beat, the reception data buffer of each ARINC429 bus port of gateway poll check, and effective passage is identified;
(3) multiple effective ARINC429 data and timestamp information, be merged into the payload data bag of AFDX data according to order as shown in Figure 5; Meanwhile, revise effective channel information, the further process of holding to facilitate AFDX.
Fig. 6 is the schematic diagram of the data transmission device according to the embodiment of the present invention.This device can be arranged in gateway or network-switching equipment.As shown in Figure 6, data transmission device 60 mainly comprises one or more receiver module 61 (illustrating multiple in omission mode in figure), processing module 62, sending module 63.
Receiver module 61 is for receiving the Frame of the first form.Processing module 62 is added in the Frame of the second form for the transmission destination mark of the payload data in the Frame of the first form one or more that received by receiver module 61 and this payload data.Sending module 63 is for sending the Frame of the second form.The timestamp that processing module 62 also can be used for the Frame of the first form one or more received by receiver module 61 adds in the Frame of the second form.
A kind of alternate configurations of processing module 62 comprises crosspoint and encapsulation unit, wherein the payload data of crosspoint for extracting from multiple receiver module in the Frame of the first form; Encapsulation unit is used for the transmission destination mark of the payload data in the Frame of the first form one or more of crosspoint extraction and this payload data to add in the Frame of the second form.
Receiver module 61 can be used for receiving ARINC429 Frame; The transmission destination mark that processing module 62 also can be used for payload data in the one or more ARINC429 Frames received by described receiver module and this payload data is added in AFDX Frame; Sending module 63 also can be used for sending AFDX Frame.Like this, data transmission device 60 can be used for the data communication between ARINC429 bus and AFDX bus.
Fig. 7 is the schematic diagram of the another kind of data transmission method according to the embodiment of the present invention.As shown in Figure 7, the method mainly comprises the steps:
Step S71: the Frame receiving the second form.In this step, one or more transfer of data destination mark and one or more groups data to be transmitted is comprised in the Frame of the second form.
Step S73: extract data to be transmitted from the Frame of the second form.
Step S75: the Frame according to transfer of data destination mark, data to be transmitted being encapsulated as respectively the first form one or more.
Step S77: send the Frame after encapsulation.
As can be seen from above-mentioned steps, by extracting a kind of payload information of format data frame, obtain the destination and data that send, thus the data of two kinds of forms are directly changed, do not need complicated network negotiate process, contribute to the efficiency that raising data carry out transmitting between the system of use two kinds of forms.
In the flow process shown in Fig. 7, the Frame of the first form can comprise ARINC429 Frame; The Frame of the second form can comprise AFDX Frame, and the data to be transmitted of step S73 is encapsulated in the payload part of AFDX Frame.Like this, the flow process shown in Fig. 7 is applicable to the transfer of data between ARINC429 bus and AFDX bus.As shown in Figure 8, Fig. 8 is the schematic diagram extracting ARINC429 data from AFDX Frame according to the embodiment of the present invention.Composition graphs 8, transmitting terminal is AFDX bus termination, receiving terminal is ARINC429 bus termination, then (as shown in square frame in figure 81) in one or more groups data encapsulation mailing to ARINC429 bus termination AFDX Frame is in fig. 8 sent to gateway by AFDX bus termination, gateway is changed the data received, and extracts core layer data and is sent to corresponding termination environment.Detailed process is as follows:
(1) AFDX bus receiving port receives data;
(2) effective channel information is extracted;
(3) extract the ARINC429 data in payload, and be sent to counterpart terminal according to channel information.
Fig. 9 is the schematic diagram of the another kind of data transmission device according to the embodiment of the present invention.As shown in Figure 9, data transmission device 90 mainly comprises receiver module 91, extraction module 92 and sending module 93, wherein receiver module 91 is for receiving the Frame of the second form, comprises one or more transfer of data destination mark and one or more groups data to be transmitted in the Frame of this second form; Then extraction module 92 is encapsulated as the Frame of the first form one or more respectively according to transfer of data destination mark for extracting data to be transmitted in the Frame from the second form; The Frame that sending module 93 encapsulates for sending extraction module 92.
Further, receiver module 91 also can be used for receiving AFDX Frame, comprises one or more transfer of data destination mark and one or more groups data to be transmitted in this AFDX Frame; Extraction module 92 also can be used for from AFDX Frame, extract described data to be transmitted and is then encapsulated as one or more ARINC429 Frame respectively according to described transfer of data destination mark.
According to the technical scheme of the embodiment of the present invention, by extracting a kind of payload information of format data frame, obtain the destination and data that send; Or multiple certain format data frame encapsulation is inserted the payload part of another kind of format data frame, the data of two kinds of forms can directly be changed, and do not need complicated network negotiate process, the problem that between the device contributing to solving ARINC429 and AFDX two kinds of agreements, the efficiency of transfer of data is lower, thus realize the efficient conversion of avlonlcs data, improve the utilance of systematic function and bandwidth.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. a data transmission method, is characterized in that, comprising:
Receive the Frame of the first form multiple;
The timestamp of Frame of the transmission destination of the payload data in the Frame of the first form described multiple received, this payload data mark and described the first form multiple is added in the Frame of the second form, wherein, the effective passage receiving the Frame of described the first form multiple comprises at least two;
Send the Frame of described the second form;
Wherein, the Frame of the first form described comprises ARINC429 Frame; The Frame of described the second form comprises AFDX Frame.
2. a data transmission device, is characterized in that, comprising:
One or more receiver module, described receiver module is for receiving the Frame of the first form multiple;
Processing module, timestamp for payload data, the transmission destination mark of this payload data and the Frame of described the first form multiple in the Frame of the first form described multiple that received by described receiver module adds in the Frame of the second form, wherein, the effective passage receiving the Frame of described the first form multiple comprises at least two;
Sending module, for sending the Frame of described the second form;
Wherein, described receiver module is also for receiving multiple ARINC429 Frame; Described processing module is also added in AFDX Frame for the transmission destination mark of the payload data in described multiple ARINC429 Frames of being received by described receiver module, this payload data and the timestamp of described multiple ARINC429 Frame; Described sending module is also for sending AFDX Frame.
3. a data transmission method, is characterized in that, comprising:
Receive the Frame of the second form, in the Frame of described the second form, comprise the timestamp of multiple transfer of data destination mark and many group data to be transmitted and described many group data to be transmitted;
From the Frame of described the second form, extract described data to be transmitted, more then send according to the Frame that described transfer of data destination mark is encapsulated as the first form multiple respectively;
Wherein, the Frame of the first form described comprises ARINC429 Frame; The Frame of described the second form comprises AFDX Frame, and described data to be transmitted is encapsulated in the payload part of AFDX Frame.
4. a data transmission device, is characterized in that, comprising:
Receiver module, for receiving the Frame of the second form, comprises the timestamp of multiple transfer of data destination mark and many group data to be transmitted and described many group data to be transmitted in the Frame of described the second form;
Extraction module, is then encapsulated as the Frame of the first form multiple respectively according to described transfer of data destination mark for extracting described data to be transmitted in the Frame from described the second form;
Sending module, for sending the Frame of described extraction module encapsulation;
Wherein, described receiver module, also for receiving AFDX Frame, comprises the timestamp of described multiple transfer of data destinations mark and described many group data to be transmitted and described many group data to be transmitted in described AFDX Frame; Then described extraction module is also encapsulated as multiple ARINC429 Frame according to described transfer of data destination mark respectively for extracting described data to be transmitted from described AFDX Frame.
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US9081700B2 (en) * 2013-05-16 2015-07-14 Western Digital Technologies, Inc. High performance read-modify-write system providing line-rate merging of dataframe segments in hardware
FR3014622B1 (en) 2013-12-10 2017-06-09 Thales Sa ARCHITECTURE FOR CRITICAL DATA TRANSMISSION IN AVIONICS SYSTEMS
CN106209309A (en) * 2016-06-30 2016-12-07 北京小米移动软件有限公司 Data transmission method, apparatus and system
CN106850377B (en) * 2017-03-29 2020-08-28 北京润科通用技术有限公司 Checking system and method for AFDX (avionics full Duplex switched Ethernet) bus messages
WO2024040604A1 (en) * 2022-08-26 2024-02-29 华为技术有限公司 Data transmission method and apparatus
CN117376442B (en) * 2023-12-07 2024-03-08 中国民航大学 Remote data concentrator protocol conversion method and equipment based on hardware processing architecture

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