CN203206280U - System enabling secure communication between various kinds of avionics data buses and Ethernet - Google Patents
System enabling secure communication between various kinds of avionics data buses and Ethernet Download PDFInfo
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- CN203206280U CN203206280U CN 201220711161 CN201220711161U CN203206280U CN 203206280 U CN203206280 U CN 203206280U CN 201220711161 CN201220711161 CN 201220711161 CN 201220711161 U CN201220711161 U CN 201220711161U CN 203206280 U CN203206280 U CN 203206280U
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Abstract
The utility model relates to the aviation electronic and communication technical field, specifically discloses a system enabling secure communication between various kinds of avionics data buses and the Ethernet. The system comprises an avionics data bus network, the Ethernet, and a data forwarding system which is in communication connection with the avionics data bus network and the Ethernet respectively. An avionics data bus receiving set, an Ethernet receiver, an address adaptation module, and a data forwarding module which are in communication connection with the avionics data bus network through the avionics data buses are arranged inside the data forwarding system, wherein the address adaptation module is communication connection with a repeater, the data forwarding module is in communication connection with the avionics data buses and the Ethernet respectively, and the avionics data buses comprise at least one of an AFDX/ARINC 664 data bus and an ARINC 429 data bus. The system of the utility model supports the communication between the AFDX/ARINC 664 and the Ethernet as well as the communication between the ARINC 429 and the Ethernet simultaneously, such that a single device can have functions of multiple gateways.
Description
Technical field
The utility model relates to aviation electronics and communication technical field, relates in particular to the system that carries out secure communication between one kind of multiple aeronautical data buses and the Ethernet.
Background technology
At present, aeronautical data buses such as the ARINC 664 of aeronautical data bus such as avionic full-duplex switched-type Ethernet (AFDX:Avionics Full Duplex Switched Ethernet)/US Airways wireless provider (ARINC:Aeronautical Radio Incorporated) and ARINC 429 are extensive use of in the civil aviation field.They all are based on the aeronautical data bus of link, the virtual link among the AFDX/ARINC 664 (VL:Virtual Link) and ARINC 429 buses, and its link is one-way transmission, every link has only a sender, one or more recipients.
Comprise systems such as using the continuous flight control of aeronautical data bus, navigation in the onboard networks of aircraft, needed high security; The systems such as main cabin amusement that use Ethernet to link to each other, fail safe is relatively low.For security reasons, network is divided into secure network territory and unsecured network territory, system uses the aeronautical data bus to link to each other in the secure network territory, and system uses Ethernet to link to each other in the unsecured network territory.Between secure network territory and the unsecured network territory unidirectional or two-way communication requirement is arranged.
Existing AFDX/ARINC 664 gateways, though can reach the purpose of communicating by letter between AFDX/ARINC 664 networks and the Ethernet, but only support communicating by letter between AFDX/ARINC 664 and the Ethernet, can not support communicating by letter between ARINC 429 and the Ethernet, and internet security is low, and the major defect of its fail safe comprises:
The secure network territory may be subjected to the network attack from the unsecured network territory;
The data in secure network territory may be obtained by non-trust terminal.
The utility model content
The purpose of this utility model is, proposes the system of secure communication between one kind of multiple aeronautical data buses and the Ethernet, and it supports communicating by letter between AFDX/ARINC 664 and ARINC 429 and the Ethernet simultaneously, makes individual equipment have the function of a plurality of gateways.
For achieving the above object, the utility model provides the system of secure communication between one kind of multiple aeronautical data buses and the Ethernet, it comprises: the aeronautical data bus network, the Ethernet that contacts with the aeronautical data bus network communication, it also comprises respectively the data forwarding system of writing to each other with aeronautical data bus network and Ethernet, comprise in this data forwarding system: the aeronautical data bus interface receiving apparatus that contacts by aeronautical data bus and aeronautical data bus network communication, the Ethernet receiver of writing to each other by Ethernet and Ethernet, the address adaptation module of writing to each other with aeronautical data bus interface receiving apparatus and Ethernet receiver respectively, and the data forwarding module of writing to each other with the address adaptation module; Described address adaptation module is also write to each other with a transponder; Described data forwarding module also contacts with aeronautical data bus and ethernet communication respectively, and this aeronautical data bus comprises at least one road AFDX/ARINC 664 and ARINC 429 data/address buss.
In the utility model, described aeronautical data bus interface receiving apparatus can adopt AFDX/ARINC 664 and ARINC 429 air communications bus data R-T units.
Wherein, can to adopt U.S. DeltaTRAK company model be 20156 Ethernet receiver to described Ethernet receiver.
Especially, described address adaptation module can adopt the fpga chip of Spartan-6 series or the Cyclone IV of the altera corp series of Xilinx company.
Moreover, also be provided with an ethernet frame filtering module between described address adaptation module and the Ethernet receiver.
In addition, described ethernet frame filtering module can be a fire compartment wall.
The system of secure communication between multiple aeronautical data bus of the present utility model and the Ethernet, it supports communicating by letter between AFDX/ARINC 664 and ARINC 429 several data buses and the Ethernet simultaneously, thereby make individual equipment have the function of a plurality of gateways, reduced weight; Moreover, it utilizes the characteristics of link one-way transmission in the aeronautical data bus (based on link), be configured by the path that Frame is transmitted between aeronautical data bus and Ethernet, make Frame not go beyond one's commission and be transferred to other destinations, avoided the secure network territory to be subjected to network attack from the unsecured network territory, guaranteed that the data in secure network territory can not obtained by non-trust terminal; Simultaneously, and it is by ethernet frame is filtered, and has strengthened the communication security between aeronautical data bus and the Ethernet, improves internet security.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of specific embodiment of system of secure communication between the multiple aeronautical data bus of the utility model and the Ethernet;
Fig. 2 is the method flow diagram that utilizes the system of secure communication between the multiple aeronautical data bus of the utility model and the Ethernet to carry out secure communication;
Fig. 3 is the schematic diagram of ARINC 429 Frames.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides the system of secure communication between one kind of multiple aeronautical data buses and the Ethernet, it comprises: aeronautical data bus network 10(is the secure network territory), the Ethernet 20(that writes to each other with aeronautical data bus network 10 is the unsecured network territory), it also comprises respectively the data forwarding system 30 of writing to each other with aeronautical data bus network 10 and Ethernet 20, comprise in this data forwarding system 30: the aeronautical data bus interface receiving apparatus 31 of writing to each other by aeronautical data bus 12 and aeronautical data bus network 10, the Ethernet receiver 32 of writing to each other by Ethernet 22 and Ethernet 20, the address adaptation module 33 of writing to each other with aeronautical data bus interface receiving apparatus 31 and Ethernet receiver 31 respectively, and the data forwarding module 34 of writing to each other with address adaptation module 33; Described address adaptation module 33 also stores the aeronautical data bus and transmits 35(to Ethernet and show hereinafter to be referred as A2E with one) and/or Ethernet transmit 36(to the aeronautical data bus and show hereinafter to be referred as E2A) transponder 37 write to each other; Described data forwarding module 34 is also write to each other with aeronautical data bus 12 and Ethernet 22 respectively, and this aeronautical data bus comprises at least one road AFDX/ARINC 664 and ARINC 429 data/address buss.The utility model is supported communicating by letter between AFDX/ARINC 664 and ARINC 429 several data buses and the Ethernet simultaneously, can make individual equipment have the function of a plurality of gateways, has reduced weight; In addition, it is configured by the path that Frame is transmitted between aeronautical data bus 12 and Ethernet 22, make Frame not go beyond one's commission and be transferred to other destinations, avoid the secure network territory to be subjected to network attack from the unsecured network territory, guarantee that the data in secure network territory can not obtained by non-trust terminal, strengthen the communication security between aeronautical data bus and the Ethernet, improved internet security.
Wherein, described aeronautical data bus interface receiving apparatus 31 is used for the Frame that the adaptive hardware of aeronautical data bus (AFDX/ARINC 664 End System and ARINC 429 adaptive hardware) receives is sent into buffer memory for 33 processing of address adaptation module.As a kind of specific embodiment of the present utility model, described aeronautical data bus interface receiving apparatus 31 can adopt AFDX/ARINC 664 and ARINC 429 air communications bus data R-T units, and described buffer memory can adopt First Input First Output (FIFO:First Input First Output).
In the utility model, described Ethernet receiver 32 is used for that the Frame that ethernet nic hardware receives is sent into buffer memory to be handled for address adaptation module 33.Especially, as a kind of selectivity embodiment of the present utility model, it is 20156 Ethernet receiver that described Ethernet receiver can adopt U.S. DeltaTRAK company model, and this Ethernet receiver can be by static state or dynamic IP identification and the main-machine communication of Ethernet.
The Frame that address adaptation module 33 is received for the treatment of described aeronautical data bus interface receiving apparatus 31 and described Ethernet receiver 32.Concrete, the address adaptation module 32 in the utility model can adopt the fpga chip of Spartan-6 series or the Cyclone IV of the altera corp series of Xilinx company.Prestore the program of handling the Frame that aeronautical data bus interface receiving apparatus 31 and Ethernet receiver 32 receive in this fpga chip, it can be organized ethernet data frame again according to the content of corresponding list item in the E2A table 36 and be bundled into aeronautical data bus data frame and send to data forwarding module 34 then after receiving ethernet data frame; After receiving aeronautical data bus data frame, aeronautical data bus data frame organized again according to the content of corresponding list item in the A2E table 35 be bundled into ethernet data frame and send to data forwarding module 34 then.
The system of secure communication between multiple aeronautical data bus of the present utility model and the Ethernet, when aeronautical data bus network 10 when carrying out one-way communication between the Ethernet 20, then can in transponder 37, store A2E table 35 in advance; When Ethernet 20 when carrying out one-way communication between the aeronautical data bus network 10, then can in transponder 37, store E2A table 36 in advance; And when carrying out two-way communication between aeronautical data bus network 10 and the Ethernet 20, then can in transponder 37, store A2E table 35 and E2A table 36 simultaneously in advance.Wherein, this A2E table 35 is pre-set, be used for the configuration data frame from aeronautical data bus 12 to Ethernet the transmission path in 22 the transmission direction, i.e. the Frame from aeronautical data bus 12 that definition is received is forwarded to which recipient in the Ethernet 22.E2A table 36 also is pre-set, is used for the transmission path in the transmission direction of configuration data frame from Ethernet to the aeronautical data bus, i.e. the path that the Frame from Ethernet 22 that definition is received is walked when aeronautical data bus 12 sends.
In the utility model specific embodiment, described A2E table 35 has included index address and scheduler two row with E2A table 36, and it all can be preserved with the data storage language of XML form or other form.As shown in table 1 below, be A2E table 35, in the index address of this A2E table 35, include the address information that aeronautical data bus interface receiving apparatus connects 31 Frames of receiving, include Ethernet recipient address information in the scheduler of this A2E table 35.
Table 1
As following table 2, be E2A table 36, in the index address of this E2A table 36, include Ethernet sender's address information, include the address information of the Frame that will send out from aeronautical data bus 12 in the scheduler of this E2A table 36.
Table 2
In the utility model specific embodiment, the Frame that the described address adaptation module 33 described aeronautical data bus interface receiving apparatus 31 of processing and described Ethernet receiver 32 are received, it specifically comprises:
Handle ethernet data frame: ethernet data frame comprises MAC layer, IP layer, transport layer heading and application layer data.Address adaptation module 33 is resolved each its ethernet data frame of receiving, in " index address " item of E2A table 36, retrieve, if find the address information coupling, then ethernet data frame is organized again according to the content in E2A table 36 " scheduler " item and be bundled into aeronautical data bus data frame, otherwise ethernet data frame is abandoned.
Handle aeronautical data bus data frame: address adaptation module 33 resolution data frames, in " index address " item of A2E table 35, retrieve, if find the address information coupling, then Frame is organized again according to the content in A2E table 35 " scheduler " item and be bundled into ethernet data frame, otherwise Frame is abandoned.
As a kind of preferred embodiment of the present utility model, also be provided with an ethernet frame filtering module 38 that stores filter table between described address adaptation module 33 and the Ethernet receiver 32.As a kind of selectivity embodiment of the present utility model, this ethernet frame filtering module 38 can be a fire compartment wall (firewall).This fire compartment wall is the equipment that information security is guaranteed in an assistance, can be according to specific rule, and permission or the data of restriction transmission are passed through, and this fire compartment wall can be that an exclusive hardware also can be to be erected at the cover of one on typical hardware software.In the utility model, ethernet frame filtering module 38 is used for filtering out the invalid data frame that sends from Ethernet 22 according to the invalid data feature of described filter table definition.Described filter table is used for the feature of definition invalid data, and in the utility model specific embodiment, the Frame that possesses following feature is defined as invalid data, will be dropped:
(1) load data in the IP bag does not belong to and specifies message (because be and AFDX/ARINC 664 network services, so be the UDP message);
(2) target MAC (Media Access Control) address of Frame is not the local mac address of data forwarding system, and perhaps the purpose IP address of Frame is not the local ip address of data forwarding system;
(3) source MAC of Frame, source IP address be not in the address list of filter table.
As shown in Figure 2, be the method that the system that utilizes secure communication between the multiple aeronautical data bus of the utility model and the Ethernet carries out secure communication, this method comprises the steps:
Step a, aeronautical data bus interface receiving apparatus is sent the Frame that the adaptive hardware of aeronautical data bus receives into buffer memory; The Ethernet receiver is sent the Frame that ethernet nic hardware receives into buffer memory.As a kind of selectivity embodiment of the present utility model, this buffer memory can adopt First Input First Output (FIFO:First Input First Output).
Step b, the address adaptation module is transmitted and/or Ethernet is transmitted the path that Frame is transmitted to the aeronautical data bus and is configured between aeronautical data bus and Ethernet to Ethernet by the aeronautical data bus.As a kind of preferred embodiment of the present utility model, before this step b, also comprise: the operation of the invalid data that sends from Ethernet being filtered according to filter table.The feature of this invalid data is defined by filter table, the Frame that possesses following feature is defined as invalid data: the load data in the IP bag, Frame, the purpose IP address that target MAC (Media Access Control) address is not the local mac address of data forwarding system are not the Frames of the local ip address of data forwarding system, perhaps source MAC and/or the source IP address Frame in the permission address realm of filter table not.The invalid data that meets above-mentioned feature will be dropped.Further, step b comprises that specifically the address adaptation module handles ethernet data frame and/or handle the operation of aeronautical data bus data frame in the utility model.When handling ethernet data frame, the address adaptation module is resolved each its ethernet data frame of receiving, in the index address item that Ethernet is transmitted to the aeronautical data bus, retrieve, if find the address information coupling, then ethernet data frame is organized again according to the content in the scheduler item and be bundled into aeronautical data bus data frame, otherwise ethernet data frame is abandoned; When handling aeronautical data bus data frame, the address adaptation module is resolved each its aeronautical data bus data frame of receiving, in the index address item that the aeronautical data bus is transmitted to Ethernet, retrieve, if find the address information coupling, then aeronautical data bus data frame is organized again according to the content in the scheduler item and be bundled into ethernet data frame, otherwise Frame is abandoned.
Step c, data forwarding module carries out the type judgement to organize the Frame that is bundled into again through the address adaptation module, and the transmission handling procedure that starts the adaptive hardware of corresponding types sends Frame, and sender and recipient on the transmission path that has disposed are communicated.In the utility model specific embodiment, if multi-channel A FDX/ARINC 664, data forwarding module is judged from the address information of AFDX/ARINC 664 Frames use which AFDX/ARINC 664; If multi-channel A RINC 429, data forwarding module judges use which ARINC 429 from the SDI field of ARINC 429 Frames.At last, start the transmission handling procedure of corresponding adaptive hardware, thereby Frame is sent.As shown in Figure 3, be the schematic diagram of ARINC 429 Frames, it comprises one 32 the word that 5 fields constitute.The P field is parity check bit; SSM (Sign/Status Matrix) field is-symbol state matrix position, it points out the characteristic of data, as direction, symbol etc., also can show the state of data generator hardware, is invalid data or test data; The Data field comprises data payload; SDI (Source/Destination Identifier) field is used for transmission source or the purpose of identification frames; The Label field is represented corresponding to the aviation electronics parameter of data payload and the form of data payload, is the DME data as what transmit, and then Label is octal number 201.
In sum, the system of secure communication between multiple aeronautical data bus of the present utility model and the Ethernet, it supports communicating by letter between AFDX/ARINC 664 and ARINC 429 several data buses and the Ethernet simultaneously, thereby makes individual equipment have the function of a plurality of gateways, has reduced weight; Moreover, it is configured by the path that Frame is transmitted between aeronautical data bus and Ethernet, make Frame not go beyond one's commission and be transferred to other destinations, and by ethernet frame is filtered, strengthen the communication security between aeronautical data bus and the Ethernet, improved internet security.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. the system of secure communication between one kind of multiple aeronautical data buses and the Ethernet, comprise the aeronautical data bus network, the Ethernet that contacts with the aeronautical data bus network communication, it is characterized in that, also comprise respectively the data forwarding system of writing to each other with aeronautical data bus network and Ethernet, comprise in this data forwarding system: the aeronautical data bus interface receiving apparatus that contacts by aeronautical data bus and aeronautical data bus network communication, the Ethernet receiver of writing to each other by Ethernet and Ethernet, the address adaptation module of writing to each other with aeronautical data bus interface receiving apparatus and Ethernet receiver respectively, and the data forwarding module of writing to each other with the address adaptation module; Described address adaptation module is also write to each other with a transponder; Described data forwarding module also contacts with aeronautical data bus and ethernet communication respectively, and this aeronautical data bus comprises at least one road AFDX/ARINC664 and ARINC429 data/address bus.
2. the system of secure communication between multiple aeronautical data bus as claimed in claim 1 and the Ethernet is characterized in that, described aeronautical data bus interface receiving apparatus adopts AFDX/ARINC664 and ARINC429 air communications bus data R-T unit.
3. the system of secure communication between multiple aeronautical data bus as claimed in claim 1 and the Ethernet is characterized in that, it is 20156 Ethernet receiver that described Ethernet receiver adopts U.S. DeltaTRAK company model.
4. the system of secure communication between multiple aeronautical data bus as claimed in claim 1 and the Ethernet is characterized in that, described address adaptation module adopts the Spartan-6 series of Xilinx company or the fpga chip of the Cyclone IV of altera corp series.
5. as the system of secure communication between each described multiple aeronautical data bus of claim 1-4 and the Ethernet, it is characterized in that, also be provided with an ethernet frame filtering module between described address adaptation module and the Ethernet receiver.
6. the system of secure communication between multiple aeronautical data bus as claimed in claim 5 and the Ethernet is characterized in that described ethernet frame filtering module is a fire compartment wall.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716235A (en) * | 2013-12-31 | 2014-04-09 | 中电科航空电子有限公司 | Avionic data forwarding system and method based on ADBP communication |
| CN103731331A (en) * | 2014-01-02 | 2014-04-16 | 中电科航空电子有限公司 | Airborne data sending method, airborne data receiving method, and data transmission device and system |
| CN111385016A (en) * | 2018-12-26 | 2020-07-07 | 泰勒斯公司 | Exchange for an avionic communication system and avionic communication system comprising such an exchange |
| CN112104535A (en) * | 2020-08-14 | 2020-12-18 | 陕西千山航空电子有限责任公司 | Multi-mode airborne bus communication adaptation module and implementation method thereof |
| CN112367374A (en) * | 2020-10-27 | 2021-02-12 | 中航雷华柯林斯(无锡)航空电子设备有限公司 | AFDX data communication system applied to civil aviation |
-
2012
- 2012-12-20 CN CN 201220711161 patent/CN203206280U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716235A (en) * | 2013-12-31 | 2014-04-09 | 中电科航空电子有限公司 | Avionic data forwarding system and method based on ADBP communication |
| CN103716235B (en) * | 2013-12-31 | 2017-01-18 | 中电科航空电子有限公司 | Avionic data forwarding system and method based on ADBP communication |
| CN103731331A (en) * | 2014-01-02 | 2014-04-16 | 中电科航空电子有限公司 | Airborne data sending method, airborne data receiving method, and data transmission device and system |
| CN103731331B (en) * | 2014-01-02 | 2017-03-22 | 中电科航空电子有限公司 | Airborne data sending method, airborne data receiving method, and data transmission device and system |
| CN111385016A (en) * | 2018-12-26 | 2020-07-07 | 泰勒斯公司 | Exchange for an avionic communication system and avionic communication system comprising such an exchange |
| CN111385016B (en) * | 2018-12-26 | 2023-09-01 | 泰勒斯公司 | Switch for avionic communication system and avionic communication system |
| CN112104535A (en) * | 2020-08-14 | 2020-12-18 | 陕西千山航空电子有限责任公司 | Multi-mode airborne bus communication adaptation module and implementation method thereof |
| CN112367374A (en) * | 2020-10-27 | 2021-02-12 | 中航雷华柯林斯(无锡)航空电子设备有限公司 | AFDX data communication system applied to civil aviation |
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