CN106713009B - Aircraft key data communication system and method - Google Patents
Aircraft key data communication system and method Download PDFInfo
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- CN106713009B CN106713009B CN201611024057.0A CN201611024057A CN106713009B CN 106713009 B CN106713009 B CN 106713009B CN 201611024057 A CN201611024057 A CN 201611024057A CN 106713009 B CN106713009 B CN 106713009B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
Abstract
The invention discloses an aircraft key data communication system and method, wherein the system comprises: the device comprises core network equipment, at least one access network equipment and at least one device to be tested; the core network equipment is connected with at least one access network equipment, and the access network equipment is connected with one or more devices to be tested; the core network equipment is used for storing key data; sending a data transmission preparation instruction to the access network equipment; sending the stored key data to the access network equipment; the access network equipment is used for receiving the data transmission preparation instruction sent by the core network equipment and returning a response message for responding to the data transmission preparation instruction to the core network equipment; receiving key data sent by core network equipment, and sending the received key data to equipment to be tested; and the equipment to be tested is used for receiving the key data transmitted by the access network equipment. The method and the device realize the automatic transmission of the key data of the aircraft, and improve the reliability of the transmission of the key data in the test process of the aircraft.
Description
Technical Field
The invention belongs to the technical field of data transmission, and particularly relates to an aircraft key data communication system and method.
Background
With the development of aerospace technology, the traditional aircraft testing technology can not meet the requirement of aircraft development, and in the field of national defense and military, the requirement of weapon equipment for actual combat also puts higher requirements on the aircraft testing technology. Therefore, in the process of aviation, aerospace and weapon development, an aircraft test system with higher automation level, lower test cost and close to an actual combat target is urgently needed.
The aircraft key data refer to data which are related to a key test process and influence success or failure of a test in the aircraft test process, and the reliability of transmission of the aircraft key data directly determines whether the aircraft test process can be successfully completed. In the current aircraft testing process, the transmission of aircraft key data is generally realized by adopting the following modes: in the testing process, an optical disk and other external memories are adopted to manually copy the key data to the testing equipment. It can be seen that the existing key data transmission scheme has the following problems: the automation level is low, and the risk of human error exists; generally, the method is only suitable for point-to-point key data transmission and cannot be suitable for key data transmission of a complex heterogeneous network of a plurality of subsystems.
Disclosure of Invention
The technical problem of the invention is solved: the defects of the prior art are overcome, and the aircraft key data communication system and method are provided, so that the automatic transmission of the aircraft key data is realized, and the reliability of the transmission of the key data in the aircraft test process is improved.
In order to solve the technical problem, the invention discloses an aircraft key data communication system, which comprises: the device comprises core network equipment, at least one access network equipment and at least one device to be tested; the core network equipment is connected with the at least one access network equipment, and the access network equipment is connected with one or more devices to be tested;
the core network equipment is used for storing key data; and sending a data transmission preparation instruction to the access network equipment; and sending the stored key data to the access network equipment;
the access network equipment is used for receiving a data transmission preparation instruction sent by the core network equipment and returning a response message for responding to the data transmission preparation instruction to the core network equipment; receiving key data sent by the core network equipment, and sending the received key data to the equipment to be tested;
and the equipment to be tested is used for receiving the key data transmitted by the access network equipment.
In the above aircraft critical data communication system, the core network device includes: a core network controller and a core network memory;
the core network controller is used for sending a data transmission preparation instruction to the access network equipment and judging whether a response message returned by the access network equipment is received or not; if a response message returned by the access network equipment is received within a first preset time, sending a data transmission instruction to a core network memory; if a response message returned by the access network equipment is not received within a first preset time, generating a first error prompt message;
the core network memory is used for storing key data; and when receiving a data transmission instruction sent by the core network controller, sending the key data locally stored in the core network memory to the access network equipment.
In the above aircraft critical data communication system, the access network device includes: an access network main controller and an access network front-end controller;
an access network main controller, configured to receive a data transmission preparation instruction sent by a core network controller, and return a response message for responding to the data transmission preparation instruction to the core network controller;
an access network front end controller to:
receiving key data sent by a core network memory, and sending the received key data to the equipment to be tested frame by frame;
judging whether key data returned by the equipment to be tested is received;
if the key data returned by the device to be tested is not received within the second preset time, generating second error prompt information, and uploading the second error prompt information to the core network controller;
if the key data returned by the equipment to be tested is received within the second preset time, judging whether the key data returned by the equipment to be tested is consistent with the key data which is received by the access network front-end controller and stored locally;
if the key data returned by the device to be tested is inconsistent with the key data which is received by the access network front-end controller and stored locally, generating third error prompt information, and uploading the third error prompt information to the core network controller;
and if the key data returned by the device to be tested is consistent with the key data which is received by the access network device and stored locally, generating first correct prompt information, and uploading the first correct prompt information to the core network controller.
In the aircraft critical data communication system described above, the core network memory is configured to:
when a data transmission instruction sent by a core network controller is received, sending key data locally stored in a core network memory to an access network front-end controller frame by frame;
judging whether key data returned by the access network front-end controller is received;
if the key data returned by the front-end controller of the access network is not received within a third preset time, generating fourth error prompt information, and uploading the fourth error prompt information to the core network controller;
if the key data returned by the access network front-end controller is received within third preset time, judging whether the key data returned by the access network front-end controller is consistent with the key data locally stored in a core network memory;
if the key data returned by the access network front-end controller is inconsistent with the key data locally stored in the core network memory, generating fifth error prompt information, and uploading the fifth error prompt information to the core network controller;
and if the key data returned by the access network front-end controller is consistent with the key data locally stored in the core network memory, generating second correct prompt information, uploading the second correct prompt information to the core network controller, and sending the second correct prompt information to the access network front-end controller.
In the aircraft key data communication system, the access network front-end controller is configured to send the received key data to the device to be tested frame by frame after receiving the second correct prompt message.
In the aircraft critical data communication system, the core network controller is further configured to:
after receiving the first error prompt message, sending a data transmission preparation instruction to the access network main controller again;
after the second or third error prompt message is received, controlling the access network front-end controller to send key data to the equipment to be tested frame by frame again;
and after receiving the fourth or fifth error prompt message, controlling the core network memory to send the key data to the access network front-end controller frame by frame again.
In the aircraft critical data communication system described above,
the core network controller includes: a main control computer arranged at the back end and at the core network side;
the core network memory comprises; a data management computer arranged at the back end and at the core network side;
the access network main controller comprises: a main control computer arranged at the back end and accessed to the network side;
the access network front end controller comprises: a main control computer arranged at the front end and accessed to the network side;
the device under test includes: critical hardware devices on the aircraft.
In the aircraft key data communication system, the interior of core network equipment, the core network and each access network equipment and the interior of each access network equipment are connected through Ethernet; the access network equipment is connected with the equipment to be tested through a serial bus.
Correspondingly, the invention also discloses an aircraft key data communication method, which comprises the following steps:
sending a data transmission preparation instruction to the access network equipment;
receiving a response message returned by the access network equipment and used for responding to the data transmission preparation instruction;
sending the stored key data to the access network equipment;
and sending the key data to the equipment to be tested through the access network equipment.
In the above aircraft critical data communication method, the receiving a response message returned by the access network device for responding to the data transmission preparation instruction includes:
judging whether a response message returned by the access network equipment is received or not;
if a response message returned by the access network main controller is received within a first preset time, sending the stored key data to the access network equipment;
and if the response message returned by the access network main controller is not received within the first preset time, generating first error prompt information.
Compared with the prior art, the invention has the advantages that:
(1) the scheme of the invention uniformly schedules the whole test flow through the core network equipment, coordinates and controls the processing flows among the core network equipment, the access network equipment and the equipment to be tested, realizes the automatic transmission of key data, shortens the test period and reduces the test cost; meanwhile, manual operation processes are reduced, and the reliability of key data transmission in the aircraft testing process is improved.
(2) In the transmission process of the key data, the abnormal state in the key data process can be monitored and reported, the automatic diagnosis of the fault is realized, the fault tolerance rate of the system is improved, the abnormal problem can be timely processed according to the detection result, and the automatic test level is further improved.
(3) The transmission of the key data is carried out among all the devices in the system based on different communication protocols, and the transmission of the key data is verified based on a return strategy, so that the reliability of the transmission of the key data is further ensured.
Drawings
FIG. 1 is a block diagram of an aircraft critical data communication system in an embodiment of the invention;
FIG. 2 is a block diagram of a further aircraft critical data communication system in an embodiment of the present invention;
FIG. 3 is a schematic illustration of a deployment of another aircraft critical data communication system in an embodiment of the invention;
FIG. 4 is a flow chart illustrating steps of a method for communicating critical data of an aircraft in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, common embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a block diagram of an aircraft critical data communication system in an embodiment of the invention is shown. In this embodiment, the aircraft critical data communication system comprises: the device includes core network equipment, at least one access network equipment (e.g., a first access network equipment, a second access network equipment, etc. shown in fig. 1), and at least one device under test (e.g., a first device under test, a second device under test, etc. shown in fig. 1).
In this embodiment, the core network device 1 is connected to the at least one access network device, and the access network device is connected to one or more devices to be tested. As shown in fig. 1, the core network device is connected to the first access network device and the second access network device, and the first access network device is connected to the first device to be tested and the second device to be tested. It should be noted that the core network device 1 and the access network device may be connected through an ethernet, and the access network device and the device to be tested may be connected through a serial bus.
In this embodiment, the core network device is configured to store key data; and sending a data transmission preparation instruction to the access network equipment; and sending the stored critical data to the access network device.
The access network equipment is used for receiving a data transmission preparation instruction sent by the core network equipment and returning a response message for responding to the data transmission preparation instruction to the core network equipment; and receiving the key data sent by the core network equipment, and sending the received key data to the equipment to be tested.
And the equipment to be tested is used for receiving the key data transmitted by the access network equipment.
On the basis of the above embodiment, referring to fig. 2, a block diagram of a structure of a further aircraft critical data communication system in an embodiment of the present invention is shown.
Preferably, the core network device may specifically include: a core network controller and a core network memory. In a specific implementation:
the core network controller may be specifically configured to send a data transmission preparation instruction to the access network device, and determine whether a response message returned by the access network device is received; if a response message returned by the access network equipment is received within a first preset time, sending a data transmission instruction to a core network memory; and if the response message returned by the access network equipment is not received within the first preset time, generating first error prompt information.
A core network memory, which may be specifically configured to store critical data; and when receiving a data transmission instruction sent by the core network controller, sending the key data locally stored in the core network memory to the access network equipment.
Preferably, the access network device may specifically include: an access network main controller and an access network front-end controller. In a specific implementation:
the access network main controller may be specifically configured to receive a data transmission preparation instruction sent by a core network controller, and return a response message for responding to the data transmission preparation instruction to the core network controller.
The access network front-end controller can specifically receive the key data sent by the core network memory and send the received key data to the equipment to be tested frame by frame; judging whether key data returned by the equipment to be tested is received; if the key data returned by the device to be tested is not received within the second preset time, generating second error prompt information, and uploading the second error prompt information to the core network controller; if the key data returned by the equipment to be tested is received within the second preset time, judging whether the key data returned by the equipment to be tested is consistent with the key data which is received by the access network front-end controller and stored locally; if the key data returned by the device to be tested is inconsistent with the key data which is received by the access network front-end controller and stored locally, generating third error prompt information, and uploading the third error prompt information to the core network controller; and if the key data returned by the device to be tested is consistent with the key data which is received by the access network device and stored locally, generating first correct prompt information, and uploading the first correct prompt information to the core network controller.
In a feasible implementation manner of this embodiment, the core network memory may be specifically configured to send, frame by frame, key data locally stored in the core network memory to the access network front-end controller when receiving a data transmission instruction sent by the core network controller; judging whether key data returned by the access network front-end controller is received; if the key data returned by the front-end controller of the access network is not received within a third preset time, generating fourth error prompt information, and uploading the fourth error prompt information to the core network controller; if the key data returned by the access network front-end controller is received within third preset time, judging whether the key data returned by the access network front-end controller is consistent with the key data locally stored in a core network memory; if the key data returned by the access network front-end controller is inconsistent with the key data locally stored in the core network memory, generating fifth error prompt information, and uploading the fifth error prompt information to the core network controller; and if the key data returned by the access network front-end controller is consistent with the key data locally stored in the core network memory, generating second correct prompt information, uploading the second correct prompt information to the core network controller, and sending the second correct prompt information to the access network front-end controller.
In a feasible implementation manner of this embodiment, the access network front-end controller may be specifically configured to send the received key data to the device to be tested frame by frame after receiving the second correct prompt information.
In a possible implementation manner of this embodiment, the core network controller may be further configured to: after receiving the first error prompt message, sending a data transmission preparation instruction to the access network main controller again; after the second or third error prompt message is received, controlling the access network front-end controller to send key data to the equipment to be tested frame by frame again; and after receiving the fourth or fifth error prompt message, controlling the core network memory to send the key data to the access network front-end controller frame by frame again.
It should be noted that, the core network controller may include: a main control computer arranged at the back end and at the core network side; the core network memory may include; a data management computer arranged at the back end and at the core network side; the access network main controller may include: a main control computer arranged at the back end and accessed to the network side; the access network front end controller may include: a main control computer arranged at the front end and accessed to the network side; the device under test includes: and key hardware equipment on the aircraft refers to hardware equipment related to a key test flow in the aircraft test process. The first preset time, the second preset time and the third preset time may be the same or different, for example, may be set to 2 seconds or 3 seconds according to actual conditions, so that the reliable transmission of the critical data is ensured, the long waiting time is avoided, and the transmission rate of the critical data is increased.
With reference to the above embodiments, the present embodiment describes the aircraft critical data communication system in detail through a specific example. Referring to FIG. 3, a schematic deployment diagram of another aircraft critical data communication system in an embodiment of the present invention is shown. The overall network system is core network equipment (system), and the subsystem system is access network equipment (system). Specifically, the total net system comprises: a data management computer (i.e., a core network memory) and an overall network master computer (i.e., a core network controller); the subsystem includes: a front-end control computer (namely an access network front-end controller) and a subsystem main control computer (namely an access network main controller). The system comprises a data management computer, a general network main control computer and a subsystem main control computer, wherein the data management computer, the general network main control computer and the subsystem main control computer are arranged at the back end; the front-end control computer and the equipment to be tested are deployed at the front end.
As shown in table 1 below, the communication network of the aircraft critical data communication system employs a layered architecture: the overall network system network (core network) is composed of the sub-system main control computer nodes of each sub-system, and the secondary network comprises the ground test network of each sub-system, a point-to-point network among the devices to be tested and the like. The data transmission is carried out between the data management computer and the overall network main control computer, between the overall network main control computer and the subsystem main control computers, and between the subsystem main control computers and the front-end control computer on the basis of Ethernet connection; the front-end control computer is connected with the equipment to be tested based on a serial bus to transmit data.
TABLE 1 communication bus Classification Table
In this embodiment, the device under test may specifically be a key hardware device on the aircraft. The front-end control computer can receive and forward the test instruction and the key data to the equipment to be tested in the test process and receive the state information of the equipment to be tested. The subsystem main control computer can receive and forward the test instruction sent by the overall network system in the test process. The overall network master control computer is a scheduling center of the system and is used for scheduling the circulation of key data in the testing process. The data management computer is a data center of the system and is used for storing the key data, receiving the test instruction of the general network main control computer in the test process and sending the key data to the subsystem.
In this embodiment, the specific workflow of the aircraft critical data communication system may be as follows:
step S1, start the key data transmission process.
Step S2, the main control computer of the general network sends 'data transmission preparation order' to the main control computer of the subsystem.
When the overall network main control computer sends a command (such as a "data transmission preparation command") to the subsystem main control computers, the overall network main control computer may perform multiple transmissions based on, but not limited to, a User Datagram Protocol (UDP), so as to ensure the reliability of command transmission.
Step S3, if the main control computer of the overall network receives the response message (such as "data transmission ready") returned by the main control computer of the subsystem within two seconds, then step S4 is carried out; and if the overall network main control computer does not receive the response message returned by the subsystem main control computer within two seconds, generating an overtime error prompt message.
In step S4, the general network master computer sends "ready-to-send instruction" to the data management computer.
As described above, the general network master computer may also perform multiple transmissions based on the UDP protocol when sending instructions to the data management computer.
In step S5, the data management computer sends critical data stored locally at the data management computer to the front end control computer.
In this embodiment, one possible key data transmission method may be as follows: and the data management computer frames according to the key data and sends the key data to the front-end control computer frame by frame.
In this embodiment, the critical data may be transmitted with backhaul acknowledgement based on, but not limited to, UDP protocol. Specifically, the method comprises the following steps:
if the data management computer does not receive the key data returned by the front-end control computer within 3 seconds, or the data management computer receives the key data returned by the front-end control computer within 3 seconds, but the returned key data received by the data management computer is inconsistent with the key data locally stored by the data management computer; the error status information can be fed back to the general network master computer and/or the transmission process of the critical data can be restarted.
If the data management computer receives the key data returned by the front-end control computer within 3 seconds, and the key data returned by the data management computer is consistent with the key data stored locally by the data management computer, the following step S6 may be executed.
It should be noted that the key data framing procedure may specifically be as follows: and calculating the total number N of frames according to the size of the key data, sequentially assigning values to the N frames, increasing the frame head and the frame tail frame by frame and calculating the checksum. (it is suggested to add legend to illustrate the framing procedure)
And step S6, the front-end control computer sends the key data to the equipment to be tested.
In this embodiment, the process of the front-end control computer sending the critical data to the device under test may refer to the step S5 described above where the data management computer sends the critical data stored locally in the data management computer to the front-end control computer, and details are not described here again.
If the front-end control computer successfully sends the key data to the device to be tested, executing the following step S7; if the front-end control computer fails to send the key data to the equipment to be tested, the error state information can be fed back to the general network main control computer, and/or the transmission flow of the key data can be restarted.
And step S7, the front-end control computer feeds back successful state information to the subsystem main control computer and the general network main control computer, and the process is ended.
In summary, the aircraft key data communication system according to the embodiment of the present invention uniformly schedules the entire test flow through the core network device, and coordinates and controls the processing flows between the core network device and the access network device, and between the core network device and the device to be tested, so as to implement automatic transmission of key data, shorten the test period, and reduce the test cost; meanwhile, manual operation processes are reduced, and the reliability of key data transmission in the aircraft testing process is improved.
In the transmission process of the key data, the abnormal state in the key data process can be monitored and reported, the automatic diagnosis of the fault is realized, the fault tolerance rate of the system is improved, the abnormal problem can be timely processed according to the detection result, and the automatic test level is further improved.
And thirdly, the key data are transmitted among all the devices in the system based on different communication protocols, and the transmission of the key data is verified based on a return strategy, so that the reliability of the transmission of the key data is further ensured.
On the basis of the device embodiment, the embodiment of the invention also discloses an aircraft key data communication method. Referring to FIG. 4, a flow chart illustrating steps of a method for communicating critical data of an aircraft in an embodiment of the present invention is shown. In this embodiment, the aircraft critical data communication method includes:
And 402, receiving a response message returned by the access network equipment for responding to the data transmission preparation instruction.
And step 404, sending the key data to the device to be tested through the access network device.
In a preferable scheme of this embodiment, the step 402 may specifically include: judging whether a response message returned by the access network equipment is received or not; if a response message returned by the access network main controller is received within a first preset time, sending the stored key data to the access network equipment; and if the response message returned by the access network main controller is not received within the first preset time, generating first error prompt information.
For the method embodiment, since it corresponds to the apparatus embodiment, the description is relatively simple, and for the relevant points, refer to the description of the apparatus embodiment section.
The embodiments in the present description are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (6)
1. An aircraft critical data communication system, comprising: the device comprises core network equipment, at least one access network equipment and at least one device to be tested; the core network equipment is connected with the at least one access network equipment, and the access network equipment is connected with one or more devices to be tested;
the core network equipment is used for storing key data; and sending a data transmission preparation instruction to the access network equipment; and sending the stored key data to the access network equipment;
the access network equipment is used for receiving a data transmission preparation instruction sent by the core network equipment and returning a response message for responding to the data transmission preparation instruction to the core network equipment; receiving key data sent by the core network equipment, and sending the received key data to the equipment to be tested;
the device to be tested is used for receiving the key data transmitted by the access network device;
wherein, the core network equipment includes: a core network controller and a core network memory; the core network controller is used for sending a data transmission preparation instruction to the access network equipment and judging whether a response message returned by the access network equipment is received or not; if a response message returned by the access network equipment is received within a first preset time, sending a data transmission instruction to a core network memory; if a response message returned by the access network equipment is not received within a first preset time, generating a first error prompt message; the core network memory is used for storing key data; when a data transmission instruction sent by a core network controller is received, sending key data locally stored in a core network memory to access network equipment;
wherein, the access network equipment includes: an access network main controller and an access network front-end controller; an access network main controller, configured to receive a data transmission preparation instruction sent by a core network controller, and return a response message for responding to the data transmission preparation instruction to the core network controller; an access network front end controller to: receiving key data sent by a core network memory, and sending the received key data to the equipment to be tested frame by frame; judging whether key data returned by the equipment to be tested is received; if the key data returned by the device to be tested is not received within the second preset time, generating second error prompt information, and uploading the second error prompt information to the core network controller; if the key data returned by the equipment to be tested is received within the second preset time, judging whether the key data returned by the equipment to be tested is consistent with the key data which is received by the access network front-end controller and stored locally; if the key data returned by the device to be tested is inconsistent with the key data which is received by the access network front-end controller and stored locally, generating third error prompt information, and uploading the third error prompt information to the core network controller; and if the key data returned by the device to be tested is consistent with the key data which is received by the access network device and stored locally, generating first correct prompt information, and uploading the first correct prompt information to the core network controller.
2. The system of claim 1, wherein the core network memory is configured to:
when a data transmission instruction sent by a core network controller is received, sending key data locally stored in a core network memory to an access network front-end controller frame by frame;
judging whether key data returned by the access network front-end controller is received;
if the key data returned by the front-end controller of the access network is not received within a third preset time, generating fourth error prompt information, and uploading the fourth error prompt information to the core network controller;
if the key data returned by the access network front-end controller is received within third preset time, judging whether the key data returned by the access network front-end controller is consistent with the key data locally stored in a core network memory;
if the key data returned by the access network front-end controller is inconsistent with the key data locally stored in the core network memory, generating fifth error prompt information, and uploading the fifth error prompt information to the core network controller;
and if the key data returned by the access network front-end controller is consistent with the key data locally stored in the core network memory, generating second correct prompt information, uploading the second correct prompt information to the core network controller, and sending the second correct prompt information to the access network front-end controller.
3. The system of claim 2, wherein the access network front-end controller is configured to send the received critical data to the device under test frame by frame after receiving the second correct prompt message.
4. The system of claim 2, wherein the core network controller is further configured to:
after receiving the first error prompt message, sending a data transmission preparation instruction to the access network main controller again;
after the second or third error prompt message is received, controlling the access network front-end controller to send key data to the equipment to be tested frame by frame again;
and after receiving the fourth or fifth error prompt message, controlling the core network memory to send the key data to the access network front-end controller frame by frame again.
5. The system of claim 1,
the core network controller includes: a main control computer arranged at the back end and at the core network side;
the core network memory comprises; a data management computer arranged at the back end and at the core network side;
the access network main controller comprises: a main control computer arranged at the back end and accessed to the network side;
the access network front end controller comprises: a main control computer arranged at the front end and accessed to the network side;
the device under test includes: critical hardware devices on the aircraft.
6. The system according to any of claims 1-5, wherein the core network device, the core network and each access network device, and each access network device are connected via Ethernet; the access network equipment is connected with the equipment to be tested through a serial bus.
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