Data centralized transmission system and method based on flight control architecture time-sensitive network

Abstract

The application discloses a data centralized transmission system and method based on a flight control architecture time-sensitive network, and the system comprises a power supply module, a time-sensitive network interface module, a signal conditioning and interface adaptation module and a central control module; the power supply module is electrically connected with the time-sensitive network interface module, the signal conditioning and interface adaptation module and the central control module; the central control module is bidirectionally connected with two time-sensitive network interface modules, and the signal conditioning and interface adaptation module is bidirectionally connected with the central control module. The system can connect terminal equipment without a configured TSN network interface through centralized data processing, improve the smoothness of control information transmission and reduce signal transmission delay.

Description

Technical Field

[0001] The present invention relates to the field of aircraft control technology, and in particular to a data centralized transmission system and method based on a time-sensitive network of a flight control architecture. Background Art

[0002] Complex aircraft and avionics such as drones typically use TSN (Time-Sensitive Networking) to build their corresponding flight control system architectures. The core of this flight control system architecture is the TSN network. However, as a high-speed, complex network interface, the TSN network interface cannot serve as the interface for all onboard equipment in an aircraft. Some terminal devices in the aircraft are not equipped with a TSN network interface. For example, actuators, sensors, inertial devices, and other terminal devices cannot directly access the TSN network because they are not equipped with a TSN network interface. This causes some control information in the aircraft to be transmitted poorly, resulting in high transmission delays in control signals, which affects the agility of aircraft control. Therefore, the data transmission systems used in aircraft in the existing technology have the problem of poor information transmission. Summary of the Invention

[0003] The embodiments of the present invention provide a data centralized transmission system and method based on a time-sensitive network of a flight control architecture, aiming to solve the problem of poor information transmission existing in the data transmission system used in aircraft in the prior art.

[0004] In a first aspect, an embodiment of the present invention discloses a centralized data transmission system based on a time-sensitive network of a flight control architecture, wherein the system includes a power supply module, a time-sensitive network interface module, a signal conditioning and interface adaptation module, and a central control module;

[0005] The power supply module is electrically connected to the time-sensitive network interface module, the signal conditioning and interface adaptation module and the central control module respectively;

[0006] The central control module is connected to the two time-sensitive network interface modules in a bidirectional transmission manner, and the signal conditioning and interface adaptation module is connected to the central control module in a bidirectional transmission manner.

[0007] The signal conditioning and interface adaptation module is used to receive and condition the signal, obtain the corresponding conditioned signal and output it; the central control module performs logical operations on the input signal and outputs it; the time-sensitive network interface module is used to receive the signal and output the time-sensitive network signal or send the signal to the central control module.

[0008] In a second aspect, the embodiments of the present application further disclose a data centralized transmission method based on a flight control architecture time-sensitive network, wherein the method is applied to the data centralized transmission system based on the flight control architecture time-sensitive network as described in the first aspect above, and the method comprises the following steps:

[0009] The signal conditioning and interface adaptation module is used to receive signals input by each external port, perform signal conditioning on the input signals, or output the signals after signal conditioning to each external port.

[0010] The central control module is used to concentrate the conditioned electrical signals and transmit them through the time-sensitive network interface module.

[0011] The central control module is used to receive signals from the time-sensitive network interface module and perform arithmetic processing, and output the arithmetic-processed electrical signals to the signal conditioning and interface adaptation module.

[0012] The embodiments of the present application disclose a data centralized transmission system and method based on a flight control architecture time-sensitive network, which comprises a power supply module, a time-sensitive network interface module, a signal conditioning and interface adaptation module, and a central control module. The power supply module is electrically connected to the time-sensitive network interface module, the signal conditioning and interface adaptation module, and the central control module. The central control module is bidirectionally connected to the two time-sensitive network interface modules, and the signal conditioning and interface adaptation module is bidirectionally connected to the central control module. The signal conditioning and interface adaptation module is used to receive signals and perform conditioning to obtain corresponding conditioned signals for output. The central control module is used to perform logical operation on input signals and output the signals. The time-sensitive network interface module is used to receive signals and output time-sensitive network signals or send signals to the central control module. The data centralized transmission system can connect terminal devices without TSN network interface to the TSN network through centralized data processing, improve the smoothness of control information transmission, and reduce signal transmission delay. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 The internal structure diagram of the data centralized transmission system based on the flight control architecture time-sensitive network is provided for the embodiments of the present application.

[0015] Figure 2The application effect diagram of the data centralized transmission system based on the time-sensitive network of the flight control architecture is provided for the embodiment of the present application.

[0016] Figure 3 The internal structure diagram of the central control module is provided for the embodiment of the present application.

[0017] Figure 4 The internal structure diagram of the time-sensitive network control module is provided for the embodiment of the present application.

[0018] Figure 5 The internal structure diagram of the signal conditioning and interface adaptation module is provided for the embodiment of the present application.

[0019] Figure 6 The method flow chart of the data centralized transmission method based on the time-sensitive network of the flight control architecture is provided for the embodiment of the present application.

[0020] Fig. 10, power supply module; 20, time-sensitive network interface module; 30, signal conditioning and interface adaptation module; 40, central control module; 41, shared time synchronization logic module; 42, intermediate cache module; 43, data consistency comparison module; 44, first interface controller; 45, second interface controller; 46, time-sensitive network control module; 641, frame processing unit; 642, traffic shaper; 643, media access control unit; 644, cyclic redundancy check engine; 31, transceiver; 32, filter unit; 33, level conversion unit; 34, enable control unit. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] It should be understood that, when used in the specification and the appended claims, the terms “comprise” and “include” indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0023] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clearly indicated by the context, the singular forms “a”, “an” and “the” are intended to include the plural forms.

[0024] It should be further understood that the term "and / or" used in the description and claims of the application means any one and all possible combinations of one or more of the associated listed items and includes these combinations.

[0025] The embodiments of the present application disclose a data centralized transmission system based on a flight control architecture time-sensitive network, as shown in the accompanying drawings. Figure 1 As shown in the accompanying drawings, the system comprises a power supply module 10, a time-sensitive network interface module 20, a signal conditioning and interface adaptation module 30 and a central control module 40; the power supply module 10 is electrically connected with the time-sensitive network interface module 20, the signal conditioning and interface adaptation module 30 and the central control module 40 respectively; the central control module 40 is bidirectionally connected with two time-sensitive network interface modules 20 (respectively denoted as TSN-A and TSN-B), the signal conditioning and interface adaptation module 30 is bidirectionally connected with the central control module 40; the signal conditioning and interface adaptation module 30 is used for receiving signals and conditioning to obtain corresponding conditioning signals for output; the central control module 40 performs logical operation on input signals and outputs, and the time-sensitive network interface module 20 is used for receiving signals and outputting time-sensitive network signals or sending signals to the central control module 40.

[0026] Based on the power supply module 10, the time-sensitive network interface module 20, the signal conditioning and interface adaptation module 30 and the central control module 40, a corresponding data centralized transmission system (i.e. DCU, Data Concentrator Unit) is constructed, and the specific functions of the data centralized transmission system are as shown in the accompanying drawings. Figure 2 As shown in the accompanying drawings, the data centralized transmission system is equipped with at least two time-sensitive network interface modules 20 (TSN interface), and the data centralized transmission system supports the access of devices of the following interface types and realizes centralized processing of signals: ARINC429TX (i.e. A429TX) / ARINC429RX (i.e. A429RX), CAN (ARINC825), RS422 / RS485, discrete input and output (DI / DO), VDT / Resolver. The internal structure of the data centralized transmission system is as shown in the accompanying drawings. Figure 2As shown, the power supply module 10 is used to realize power conversion and provide power to other modules; the time-sensitive network interface module 20 (TSN-PHY) is also the TSN physical layer interface (TSN-PHY), which is used to adapt to 1000BASE-T1 (automotive Ethernet) and provide interface protection function; the signal conditioning and interface adaptation module 30 is used to obtain the signal input from the external port and output it to the central control module 40 after conditioning, or receive the signal from the central control module 40 and output it to each external port after conditioning; the central control module 40 is used to perform logical operations on the input signal. The central control module 40 can be a core module including FPGA (Field Programmable Gate Array) devices and peripheral circuits.

[0027] In a more specific embodiment, Figure 3 As shown, the central control module 40 includes a shared time synchronization logic module 41, two intermediate cache modules 42, a data consistency comparison module 43, two first interface controllers 44, two second interface controllers 45 and two time-sensitive network control modules 46; each of the first interface controllers 44 and each of the intermediate cache modules 42 is respectively connected to the data consistency comparison module 43, and each of the second interface controllers 45 is respectively connected to one of the intermediate cache modules 42; each of the intermediate cache modules 42 is respectively connected to the data consistency comparison module 43, and the intermediate cache modules 42 are communicatively connected through a shared local bus; each of the time-sensitive network control modules 46 is respectively connected to the shared time synchronization logic module 41; each of the shared time synchronization logic modules 41 is respectively connected to one of the intermediate cache modules 42; and each of the time-sensitive network control modules 46 is respectively connected to one of the time-sensitive network interface modules 20.

[0028] The central control module 40 mainly consists of a shared time synchronization logic module 41 (EEE 1588V2 PTP), a middle cache module 42 (MID-Layer), a data consistency comparison module 43 (CompareLogic), a first interface controller 44 (Interface Controller), a second interface controller 45 (Interface Controller), and a time-sensitive network control module 46 (TSN Controller). The data consistency comparison module 43 is used to perform logical comparison operations, the first interface controller 44 is used to receive or output the first type of signal, and the second interface controller 45 is used to receive or output the second type of signal. The first type of signal is input to the data consistency comparison module 43 for comparison and then synchronized output to two middle cache modules 42, and the second type of signal is directly input to the middle cache module 42. Since the second interface controller 45 is connected to a corresponding middle cache module 42, the second type of signal input by the second interface controller 45 can only be output to the corresponding middle cache module 42. The middle cache modules 42 are connected in communication through a shared local bus to synchronize the second type of signal between the two middle cache modules 42. The middle cache module 42 has a first-in-first-out (FIFO) + rollback function. The middle cache module 42 and the corresponding connected second interface controller 45 realize bidirectional signal transmission, the time-sensitive network control module 46 and the corresponding connected middle cache module 42 realize bidirectional signal transmission, the data consistency comparison module 43 and each first interface controller 44 realize bidirectional signal transmission, and the data consistency comparison module 43 and the middle cache module 42 realize bidirectional signal transmission.

[0029] Specifically, as shown in FIG. 2, the central control module 40 mainly consists of a shared time synchronization logic module 41 (EEE 1588V2 PTP), a middle cache module 42 (MID-Layer), a data consistency comparison module 43 (CompareLogic), a first interface controller 44 (Interface Controller), a second interface controller 45 (Interface Controller), and a time-sensitive network control module 46 (TSN Controller). Figure 4As shown, the time-sensitive network control module 46 includes a frame processing unit 641, a traffic shaper 642 (supporting gate control list (GCL) / queue-based virtual output (Qbv)), a media access control (MAC) unit 643, and a cyclic redundancy check (CRC) engine 644 (CRC Engine Datalink Layer); the frame processing unit 641 and the traffic shaper 642 are connected with the media access control unit 643 respectively, the media access control unit 643 is connected with the cyclic redundancy check engine 644 and the shared time synchronization logic module 41 respectively, the frame processing unit 641 and the traffic shaper 642 are connected with the same intermediate cache module 42 respectively, and the cyclic redundancy check engine 644 is connected with the time-sensitive network interface module 20. Wherein, the time-sensitive network interface module 20 is a vehicle Ethernet physical layer interface (adapting 1000BASE-T1 vehicle Ethernet). Further, the media access control unit 643 includes a reduced gigabit medium independent interface (RGMII) and / or a serial gigabit medium independent interface (SGMII).

[0030] Wherein, the cyclic redundancy check engine 644 and the corresponding connected time-sensitive network interface module 20 realize bidirectional transmission of signals, the cyclic redundancy check engine 644 and the media access control unit 643 realize bidirectional transmission of signals, the media access control unit 643 can access the data stored in the shared time synchronization logic module 41 connected therewith, the media access control unit 643 and the frame processing unit 641 and the traffic shaper 642 realize bidirectional transmission of signals respectively, and the frame processing unit 641 and the traffic shaper 642 and the intermediate cache module 42 realize bidirectional transmission of signals respectively.

[0031] In a more specific embodiment, the central control module 40 further comprises a clock module, a memory and a reset circuit, which are also peripheral circuits in the central control module 40; the clock module is connected with the shared time synchronization logic module 41, each intermediate cache module 42 and the data consistency comparison module 43 respectively; the memory is connected with the shared time synchronization logic module 41, each intermediate cache module 42 and the data consistency comparison module 43 respectively; the reset circuit is connected with the shared time synchronization logic module 41, each intermediate cache module 42, each time-sensitive network control module 46 and the data consistency comparison module 43 respectively. Specifically, the memory comprises a synchronous dynamic random access memory (SDRAM) and a non-volatile random access memory (NVRAM). The first interface controller 44 is used to access an ARINC429 / DI / DO / VDT type external port; the second interface controller 45 is used to access an ARINC429 / ARINC825 / RS422 / RS48 type external port.

[0032] The clock module is used to send clock pulse signals to each module for clock signal synchronization; the memory is used to store data information; the reset circuit is used to send reset signals to each control module to control each module to reset and start running. During the system power-on process, the reset circuit initializes each module in the central control module 40 by sending reset signals, so that each module is sequentially powered on according to the corresponding control logic, avoiding the influence of power fluctuations and other factors on normal startup and strictly following the corresponding power-on running sequence.

[0033] In a more specific embodiment, as shown in Figure 5 The signal conditioning and interface adaptation module 30 comprises a transceiver 31, a filter unit 32, a level conversion unit 33 and an enable control unit 34; the transceiver 31 is connected with the external port to receive and transmit signals; the filter unit 32 is connected with the transceiver 31 to filter the signals received by the transceiver 31 or output the filtered signals to the transceiver 31; the level conversion unit 33 is connected with the filter unit 32 and the central control module 40, and the enable control unit 34 is connected with the transceiver 31, the filter unit 32 and the level conversion unit 33 respectively; the level conversion unit 33 is used to convert the input signals into electrical signals and output them to the central control module 40, or convert the electrical signals output by the central control module 40 into signals and output them.

[0034] The transceiver 31 is configured to transceive signals, the filter unit 32 is configured to filter the signals received by the transceiver 31 to remove noise in the signals. The level conversion unit 33 is configured to perform level conversion on the signals, such as converting the input signals (e.g. analog signals) into electrical signals (e.g. digital signals) and outputting to the central control module 40, or converting the electrical signals (e.g. digital signals) output by the central control module 40 into signals of corresponding specifications (e.g. analog signals) and outputting. The enable control unit 34 is configured to send enable control signals to the transceiver 31, the filter unit 32 and the level conversion unit 33 respectively, to control the enablement and start of work of each unit, such as controlling the start and stop of each unit by sending enable signals, or controlling the enablement and work of each unit in sequence according to corresponding logic sequences.

[0035] The embodiment of the present application further discloses a data centralized transmission method based on a flight control architecture time-sensitive network, wherein the control method is applied to a data centralized transmission system. As shown in the figure, Figure 6 The control method comprises steps S110-S130.

[0036] S110, the signal conditioning and interface adaptation module receives signals input from each external port for signal conditioning or outputs the conditioned signals to each external port.

[0037] S120, the central control module receives the conditioned electrical signals and transmits them through the time-sensitive network interface module.

[0038] S130, the central control module receives signals from the time-sensitive network interface module and performs operation processing, and outputs the operation-processed electrical signals to the signal conditioning and interface adaptation module.

[0039] Step S130 can be executed simultaneously with step S120, and there is no requirement for the execution sequence between the two steps.

[0040] The application discloses a data centralized transmission system and method based on a flight control architecture time-sensitive network, which comprises a power supply module, a time-sensitive network interface module, a signal conditioning and interface adaptation module and a central control module; the power supply module is electrically connected with the time-sensitive network interface module, the signal conditioning and interface adaptation module and the central control module; the central control module is bidirectionally connected with two time-sensitive network interface modules, and the signal conditioning and interface adaptation module is bidirectionally connected with the central control module; the signal conditioning and interface adaptation module is used for receiving signals and conditioning the signals to obtain corresponding conditioning signals for output; the central control module performs logical operation on input signals and outputs the signals, and the time-sensitive network interface module is used for receiving signals and outputting time-sensitive network signals or sending signals to the central control module. The data centralized transmission system can connect terminal devices without a configured TSN network interface into a TSN network through centralized data processing, improve the smoothness of control information transmission and reduce signal transmission delay.

[0041] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A data centralized transmission system based on a time-sensitive network of a flight control architecture, characterized in that: The system includes a power supply module, a time-sensitive network interface module, a signal conditioning and interface adaptation module, and a central control module; The power supply module is electrically connected to the time-sensitive network interface module, the signal conditioning and interface adaptation module and the central control module respectively; The central control module is connected to the two time-sensitive network interface modules in a bidirectional transmission manner, and the signal conditioning and interface adaptation module is connected to the central control module in a bidirectional transmission manner. The signal conditioning and interface adaptation module is used to receive and condition the signal, obtain the corresponding conditioned signal and output it; the central control module performs logical operations on the input signal and outputs it; the time-sensitive network interface module is used to receive the signal and output the time-sensitive network signal or send the signal to the central control module; The central control module includes a shared time synchronization logic module, two intermediate cache modules, a data consistency comparison module, two first interface controllers, two second interface controllers and two time-sensitive network control modules; Each of the first interface controllers and each of the intermediate cache modules is respectively connected to the data consistency comparison module, and each of the second interface controllers is respectively connected to one of the intermediate cache modules; each of the intermediate cache modules is respectively connected to the data consistency comparison module, and the intermediate cache modules are communicatively connected via a shared local bus; each of the time-sensitive network control modules is respectively connected to the shared time synchronization logic module; and each of the shared time synchronization logic modules is respectively connected to one of the intermediate cache modules; Each of the time-sensitive network control modules is connected to one of the time-sensitive network interface modules; The time-sensitive network control module includes a frame processing unit, a traffic shaper, a media access control unit and a cyclic redundancy check engine; The frame processing unit and the traffic shaper are respectively connected to the media access control unit, the media access control unit is respectively connected to the cyclic redundancy check engine and the shared time synchronization logic module, the frame processing unit and the traffic shaper are respectively connected to the same intermediate cache module, and the cyclic redundancy check engine is connected to the time-sensitive network interface module.

2. The data centralized transmission system based on the flight control architecture time-sensitive network according to claim 1 is characterized in that: The time-sensitive network interface module is an automotive Ethernet physical layer interface.

3. The data centralized transmission system based on the flight control architecture time-sensitive network according to claim 1 is characterized in that: The media access control unit includes a reduced gigabit media independent interface and / or a serial gigabit media independent interface.

4. The data centralized transmission system based on a flight control architecture time-sensitive network according to any one of claims 1 to 3, characterized in that: The central control module also includes a clock module, a memory and a reset circuit; The clock module is respectively connected to the shared time synchronization logic module, each intermediate cache module and the data consistency comparison module; the memory is respectively connected to the shared time synchronization logic module, each intermediate cache module and the data consistency comparison module; the reset circuit is respectively connected to the shared time synchronization logic module, each intermediate cache module, each time-sensitive network control module and the data consistency comparison module.

5. The data centralized transmission system based on the flight control architecture time-sensitive network according to claim 4 is characterized in that: The memory includes a synchronous dynamic random access memory and a non-volatile random access memory.

6. The data centralized transmission system based on a flight control architecture time-sensitive network according to any one of claims 1 to 3, characterized in that: The first interface controller is used to access an external port of ARINC429 / DI / DO / VDT type; The second interface controller is used to access an external port of ARINC429 / ARINC825 / RS422 / RS48 type.

7. The data centralized transmission system based on a flight control architecture time-sensitive network according to any one of claims 1 to 3, characterized in that: The signal conditioning and interface adaptation module includes a transceiver, a filtering unit, a level conversion unit and an enabling control unit; The transceiver is connected to the external port to transmit and receive signals; the filtering unit is connected to the transceiver to filter the signal received by the transceiver or output the signal to the transceiver after filtering; the enabling control unit is respectively connected to the transceiver, the filtering unit and the level conversion unit; The level conversion unit is connected to the filtering unit and the central control module. The level conversion unit is used to perform level conversion on the input signal to obtain an electrical signal and output it to the central control module, or to perform level conversion on the electrical signal output by the central control module to obtain a signal and output it.

8. A method for centralized data transmission based on a time-sensitive network of a flight control architecture, characterized in that: The method is applied to the data centralized transmission system based on the flight control architecture time-sensitive network according to any one of claims 1 to 7, and the method comprises: Utilize the signal conditioning and interface adapter module to receive the signals input from each external port and perform signal conditioning, or perform signal conditioning on the input signals and then output them to each external port; Centralizing the conditioned electrical signals using the central control module and transmitting them separately through the time-sensitive network interface modules; Furthermore, the central control module is used to receive the signal from the time-sensitive network interface module and perform calculation processing, and output the calculated electrical signal to the signal conditioning and interface adaptation module.

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