CN118200356A - Airborne data transmission monitoring system - Google Patents
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Abstract
The embodiment of the specification discloses an airborne data transmission monitoring system, which comprises an airborne access device and a data analysis monitoring device; wherein, the machine carries access arrangement and includes: the data preprocessing module is used for acquiring initial data from the airborne system and preprocessing the initial data; the data unpacking and encrypting module is used for unpacking the preprocessed data into small packets and encrypting each small packet; the data transmission module is used for forming a communication packet according to the encrypted data and transmitting the communication packet to the data analysis device; the data analysis monitoring device comprises: the data acquisition module is used for acquiring the communication packet; the data decryption module is used for decrypting the communication packet; the data analysis device is used for generating a data monitoring result according to the decrypted data.
Description
Technical Field
The application relates to the technical field of data processing, in particular to an airborne data transmission monitoring system.
Background
At present, PHM data transmission of civil aircraft basically adopts two modes, namely transmission of system fault information and partial request data through ACARS. The other is to transmit the airplane QAR data over ethernet immediately or after the airplane is landed.
By means of ACARS transmission, the data bandwidth is narrow, the data transmission quantity is insufficient, and the data use requirement of the ground PHM system cannot be supported. The QAR data transmission method based on the Ethernet can quickly transmit data, but the transmitted QAR data quantity is small, and the QAR data quantity of the whole fleet is huge, but the data required for fault diagnosis and prediction of the PHM system still has the defect.
Disclosure of Invention
The embodiment of the specification provides an airborne data transmission monitoring system, which is used for solving the technical problem of how to more effectively and efficiently transmit and monitor relevant data of an aircraft.
In order to solve the technical problems, the embodiment of the specification provides the following technical scheme:
The embodiment of the specification provides an airborne data transmission monitoring system, which comprises an airborne access device and a data analysis monitoring device;
Wherein, the machine carries access arrangement and includes:
the data preprocessing module is used for acquiring initial data from the airborne system and preprocessing the initial data;
The data unpacking and encrypting module is used for unpacking the preprocessed data into small packets and encrypting each small packet;
The data transmission module is used for forming a communication packet according to the encrypted data and transmitting the communication packet to the data analysis device;
The data analysis monitoring device comprises:
The data acquisition module is used for acquiring the communication packet;
the data decryption module is used for decrypting the communication packet;
The data analysis device is used for generating a data monitoring result according to the decrypted data.
Optionally, the on-board system includes a ground-to-air broadband communication system;
the data preprocessing module comprises:
And the processor unit is used for communicating with the ground-air broadband communication system to acquire initial data.
Optionally, the data preprocessing module is further configured to:
and processing the external switching value according to the initial data or the preprocessing result.
Optionally, the on-board access device further includes:
And the clock system module is used for generating a corresponding output clock according to the initial data.
Optionally, data transmission is performed among the modules of the airborne access device through a PCIe bus.
Optionally, the data decryption module transmits the decrypted data to the data analysis device through a PCIE bus.
Optionally, the data analysis device is deployed with data analysis software and a dynamic dependency library for encapsulating data processing modules that can be invoked by the data analysis software.
Optionally, the data decryption module is disposed on a PCIe board, and the PCIe board is mounted on the data analysis device.
Optionally, the data acquisition module and the data decryption module are disposed on different boards.
Optionally, one or more modules of the on-board access device or the data analysis device are deployed with FPGA software.
The above-mentioned at least one technical scheme that this description embodiment adopted can reach following beneficial effect:
the high-efficiency and high-safety transmission of the relevant data of the aircraft between the onboard access device and the data analysis and monitoring device can be realized. The data analysis equipment can analyze the relevant data of the aircraft, so that the monitoring effects of the aircraft in aspects of flight safety, aviation management and control, command and dispatch and the like are realized.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present specification or the prior art will be briefly described below. It will be apparent to those skilled in the art that the drawings, which are only illustrative of the manner in which some of the embodiments of the present application may be utilized, are readily apparent and other drawings may be made from these drawings without the benefit of the inventive faculty.
Fig. 1 is a schematic architecture diagram of an on-board data transmission monitoring system according to a first embodiment of the present disclosure.
Fig. 2 is a schematic diagram of an installation architecture of the on-board access device in the first embodiment of the present specification.
Fig. 3 is a schematic architecture diagram of a data preprocessing module according to a first embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a connection architecture of an on-board access device according to a first embodiment of the present disclosure.
Fig. 5 is a schematic architecture diagram of a data analysis monitoring apparatus according to a first embodiment of the present disclosure.
Fig. 6 is a schematic view of an interface in the first embodiment of the present specification.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the embodiments referred to in this detailed description are only some, but not all, embodiments of the application. All other examples, which are obtained based on the examples in the detailed description without any inventive effort, should be considered as falling within the scope of the present application by a person of ordinary skill in the art.
As shown in fig. 1, a first embodiment (hereinafter referred to as "embodiment one") of the present disclosure provides an on-board data transmission monitoring system, which includes an on-board access device and a data analysis monitoring device;
Wherein, the machine carries access arrangement and includes:
the data preprocessing module is used for acquiring initial data from the airborne system and preprocessing the initial data;
The data unpacking and encrypting module is used for unpacking the preprocessed data into small packets and encrypting each small packet;
The data transmission module is used for forming a communication packet according to the encrypted data and transmitting the communication packet to the data analysis device;
The data analysis monitoring device comprises:
The data acquisition module is used for acquiring the communication packet;
the data decryption module is used for decrypting the communication packet;
The data analysis device is used for generating a data monitoring result according to the decrypted data.
In the first embodiment, the airborne access device may implement operations such as collection, encryption, downloading, etc. of airborne data, and the data analysis and monitoring device may implement operations such as analysis and monitoring of the downloaded data, including but not limited to operations such as receiving, analysis, storage, splicing, analysis, quick-looking, early warning, etc.
The following describes the airborne data transmission monitoring system in detail:
In the first embodiment, the data preprocessing module is configured to acquire various types of data (i.e., on-board data) from the on-board system, and the data acquired by the data preprocessing module may be referred to as initial data. Among other things, onboard systems may refer to various types of systems in which an aircraft is deployed or operated, including, but not limited to, an air-to-ground broadband communication system (ATG).
The data preprocessing module may acquire the initial data from the on-board system in a suitable manner, for example the data preprocessing module may include a processor unit for communicating with the ground-air broadband communication system such that the initial data is acquired from the ground-air broadband communication system by the processor unit. In particular, the processor unit may communicate with a MAC layer protocol of the ground-air broadband communication system to obtain the initial data (via the network interface). The initial data may be various types of data associated with the aircraft including, but not limited to, system status data, fault reports, configuration information, etc., for various systems or components of the aircraft. The content of the initial data is not particularly limited in the first embodiment.
The data preprocessing module may perform preprocessing on the initial data, such as data filtering, classification, etc., and the embodiment of the preprocessing is not limited specifically. Wherein the preprocessing may be performed by the processor unit.
The data preprocessing module may further include a buffer unit, and the (data preprocessing module) may transmit the initial data or the preprocessed data to the buffer unit for storage. The initial data can come from different aircraft systems or components, the types of the initial data can also be various, and the specific storage position of the initial data can be judged through data arbitration (a data preprocessing module). Specifically, the data type in the data packet header of the initial data can be determined, and the position of the buffer unit where the initial data should be stored is judged according to the data type, so that the corresponding data can be stored through different addresses.
The data preprocessing module is also used for executing management or control operation according to the initial data and/or the data stored in the buffer unit, and processing the external switching quantity according to the initial data or the preprocessing result.
Wherein the management or control operations include, but are not limited to: the preprocessing described above may also fall within the scope of the management or control operations described above, with a determination of the source and type of data (initial data and/or data stored in the cache unit).
Processing the external switching amount includes, but is not limited to: and judging whether the initial data and/or the preprocessing result of the initial data and/or the data stored in the buffer unit are pure data or have message instructions. If the message instruction exists, the state of the aircraft or the relevant parameters of the aircraft can be judged by analyzing the message instruction, and the external switching value is processed. For example, the respiratory heartbeat belongs to a message instruction and is used for periodically judging whether the network connection is normal or not. If the message instruction can be normally received, the electric quantity of the indicator lamp (external switch quantity) is corresponding. Of course, the message instructions may be various, for example, some message instructions are for switching algorithm, some instructions are for closing encryption and decryption, and the specific content of the message instructions is not specifically limited in the first embodiment.
The above-mentioned management or control operations and/or the processing of the external switching values may in particular be performed by a processor unit.
The data unpacking encryption module may obtain the preprocessed data, for example, may obtain the preprocessed data from the buffer unit. The data unpacking encryption module may acquire the preprocessed data from the cache unit according to the configuration mode, for example, the cache unit may have multiple data reading modes (for example, read according to a single character, read one character and return once, or read according to a line and return once), the data unpacking encryption module may determine the employed reading mode (and a specific location of the data storage) according to the configuration mode (the on-board data transmission monitoring system provided in the first embodiment may provide a corresponding configuration function or a configuration page), and may read the data from the cache unit according to the determined reading mode, and may switch the reading mode according to the data reading or transmission rate.
The data unpacking and encrypting module can unpack the preprocessed data, namely unpacking the preprocessed data into small packets, and can encrypt the small packets. Specifically, the data unpacking encryption module may call the interface of the encryption algorithm to encrypt the data of the packet, and what encryption algorithm is used may be configured as well, or may be changed, and the embodiment is not limited to the specific encryption algorithm used.
The data transmission module may obtain encrypted data (including each encrypted packet) and form a communication packet (data packet) according to the encrypted data. For example, a plurality of encrypted packets may be combined into one communication packet (the communication packet may also contain other necessary data), and the number of communication packets and the number of packets contained in a single communication packet are not limited in the first embodiment.
The data transmission module may transmit each communication packet to the data analysis device, for example, transmit each communication packet to the data acquisition module of the data analysis device. The data transmission module may transmit data to the data analysis device through an ethernet or CAN port, but the manner in which the data transmission module transmits data to the data analysis device is not limited thereto, and the first embodiment is not particularly limited.
The on-board access device may further comprise a clock system module for generating a corresponding output clock from the initial data. In practical application, various data related to the aircraft can be called loads, synchronous clocks of various types of loads are possibly inconsistent, and the clock system module can generate corresponding output clocks according to different initial data and complete processing required by clock switching.
The following provides a specific installation or architecture scheme of an on-board access device (as an example, not intended to limit embodiment one):
The on-board access device may employ a customized motherboard (modules on the motherboard or the structure of the motherboard, etc. may be freely customized, but the customized motherboard may be manufactured or used industrially). The modules of the airborne access device can transmit data through a PCIe bus.
Specifically, as shown in fig. 2, a customized data preprocessing module, a standard parallel computing graphics card (GPU), and various bus interface conversion boards, such as a CAN bus, may be supported on the PCIe bus.
As shown in fig. 3, for the data preprocessing module, as a non-limiting example, an Xi l inx Virtex 5FPGA may be used as the control and processing unit of the board, that is, the processor unit of the data preprocessing module (i.e., the PowerPC processor in fig. 4). Two sets (2 pieces of DDR3 chips per set, and 1GB total) of DDR3 caches can be used as data caches, namely, cache units. The board card can be provided with a high-efficiency DC/DC circuit for providing various power supplies required by the board. The board card can be provided with a high-precision real-time clock circuit, namely a clock system module, which provides a system clock reference.
One or more of the modules of the on-board access device may deploy FPGA software, i.e., the FPGA software may be solidified into each module (which may be referred to as an FPGA data processing board). The FPGA chip can invoke DDR cache, power supply, clock, etc. devices to manage all chips on the board to implement specific functions. The data communication among the modules of the airborne access device can be realized by FPGA software, and the data input and output of the modules can be realized by the FPGA software on the modules.
As shown in fig. 4, data may be transferred to the processor unit through a MAC layer protocol (corresponding to the network MACIP core) and stored to the cache unit (pre-processing may be performed before storage). The writing and reading of data can be realized by calling the buffer unit interface, namely the function interface provided by the DDR3 chip. In addition, the data in the cache unit may be read according to the configuration mode as described above.
In the first embodiment, the data acquisition module of the data analysis and monitoring device may perform data acquisition as described above to acquire a communication packet, and transmit the communication packet to the data decryption module.
The data decryption module decrypts the communication packet to obtain decrypted data, and transmits the decrypted data to the data analysis device (the data analysis device is generally arranged on the ground, so that the data is transmitted to the data analysis device, namely, the data is downloaded). The data decryption module may decrypt the communication packet, including: the data decryption module is used for decrypting the communication packet after the communication packet is reassembled; or the data acquisition module reassembles the communication packets and transmits the communication packets to the data decryption module for decryption.
The data analysis device obtains decrypted data (upper data), and generates a data monitoring result according to the decrypted data.
The following provides a specific installation or architecture scheme of the data analysis monitoring apparatus (as an example, not limiting the first embodiment):
As shown in fig. 5, the data analysis device may use a server or a computer supporting a PCIe interface, and the data analysis device may install a customized PCIe board (modules on the board or a structure of the board may be freely customized, but the customized board may be manufactured or used industrially), and a data decryption module may be disposed on the PCIe board. The PCIe board card is connected with the data acquisition module, the data acquisition module is arranged on another small board, and data transmission can be carried out between the data decryption module and the data acquisition module through a PCIe bus. That is, the data acquisition module and the data decryption module are disposed on different boards.
One or more modules of the data analysis monitoring device, such as a data acquisition module and/or a data decryption module, may deploy FPGA software, i.e., may cure the FPGA software into the data acquisition module and/or the data decryption module. The FPGA chip may invoke various devices to manage all of the chips on the board to achieve a particular function. The data communication between the data acquisition module and the data decryption module can be realized by FPGA software, the data acquisition module acquires encrypted data through an external data communication interface, and the data input and output of the data acquisition module and the data decryption can be realized by the FPGA software on the data acquisition module and the data decryption module.
The data analysis device can deploy data analysis software, namely upper computer software, receives decrypted data by the data analysis software, and performs unpacking analysis, preprocessing, abnormality diagnosis, storage, feature extraction and other operations according to the requirement. The data analysis software can be provided with a software interface, an algorithm processing module, a data analysis module, a data storage module and the like, and the data analysis software can exchange data among the modules in a message queue mode. In addition, the data analysis device may deploy a dynamic dependency library (Dl library) for encapsulating data processing modules that may be invoked by the data analysis software, such as reusable or proprietary data processing modules, to facilitate multithreading of the data analysis software.
The data decryption module can transmit decrypted data to the data analysis equipment through the PCIE bus, including transmitting the decrypted data to the data analysis software, and the data transmission of the PCIE bus can be realized through a board card driver, so that the data transmission between the hardware board card (comprising the data decryption module) and the upper layer software (the data analysis software) is realized.
The data analysis software may generate data monitoring results by various means such as data analysis (e.g., data splicing, data comparison), for example, when analysis determines that the data satisfies an alarm condition, an abnormal alarm is performed, and the like. The data analysis software can draw a historical data curve and display various data monitoring results through an interface, so that data quick viewing is realized, and the interface of the data analysis software can be shown in fig. 6. In particular, the data analysis software has the functions of data analysis, preprocessing, storage, feature extraction, diagnosis and monitoring, and the like, and simultaneously can perform various operations such as analysis, preprocessing, storage, feature extraction, diagnosis and monitoring on data in a multi-thread parallel manner, so that the functions of identifying and diagnosing abnormal data, mining according to the expandable data and the like are realized.
The various algorithms used by the data analysis software to implement its functions, such as feature extraction algorithms, preprocessing algorithms, diagnostic algorithms, etc., may be selected as desired.
The above mounting scheme is merely an example, and is not intended to limit the present embodiment.
The first embodiment can obtain the following beneficial effects:
The first embodiment can realize high-efficiency and high-safety transmission of the relevant data of the aircraft between the onboard access device and the data analysis and monitoring device. The onboard access device is arranged on the aircraft, and a customized main board and a hardware board card module are adopted to realize encryption, downloading and the like of data. The data analysis monitoring device is arranged on the ground, data receiving and analysis monitoring are realized through the customized board card and the data analysis equipment, so that the data related to the aircraft can be efficiently and quickly transmitted to the data analysis monitoring device in the flight process of the aircraft, and the communication efficiency of the civil aircraft air-ground interconnection is improved.
The data analysis equipment can analyze, monitor and display the related data of the aircraft, so that abnormal state intelligent prediction can be provided for flight safety, aviation management and control, command and dispatch and the like, various monitoring effects including aspects of the flight safety, aviation management and control, command and dispatch and the like of the aircraft are realized, and a guarantee is provided for the aircraft. According to the first embodiment, the digital design of an airborne system and the unified management of civil aircraft operation work can be realized, the real-time monitoring capability and the fault early warning capability of civil aircraft level data are improved, and support is provided for the operation maintenance work of the civil aircraft.
The first embodiment includes hardware devices, and provides a matched software system (including FPGA software and data analysis software), which adopts customized main boards and hardware board modules, and combines PCIE buses to perform fast transmission of encrypted data between modules and between spaces, thereby being beneficial to improving data transmission efficiency and space-to-ground interconnection communication efficiency, and improving transmission security of related data of an aircraft.
By unpacking the preprocessed data, the data encryption and data transmission efficiency can be improved. Each module adopts FPGA module programming, and transmits the encrypted data to the data analysis monitoring device to ensure the data transmission safety. The encrypted data is formed into a communication packet and then is downloaded, which is beneficial to improving the data transmission rate.
The data transmission module and the data acquisition module both support various standard data interfaces, so that the interfaces are convenient to expand and upgrade.
The external switching value (such as an indicator lamp) is automatically processed, and the functions of state prompt and the like can be realized through the external switching value, so that other equipment or manpower is not needed for managing the external switching value, and equipment faults caused by manual operation on the aircraft are avoided.
In the data analysis monitoring device, PCIe boards (bottom boards) and small boards where the data acquisition modules are located are respectively arranged, and the PCIe boards and the small boards are separated, so that the adaptability of a data interface can be ensured, and the data transmission efficiency or the civil aircraft space-ground interconnection communication efficiency can be improved. For example, if the data transmission mode is changed from the network port to the CAN port, the PCIE backplane is not required to be moved, and only the interface (data communication interface) of the small board needs to be replaced.
The customized board card is adopted, so that the size and the volume of the device are reduced, the weight is lighter, and the device is mounted on a machine.
The airborne data transmission monitoring system provided by the first embodiment can provide support for PHM data space-to-ground transmission, for example, space-to-ground interconnection transmission and data transmission state monitoring of civil aircraft health management data (initial data) and data analysis monitoring work are realized. Due to the high efficiency and high speed of data transmission, the embodiment can realize rapid transmission of large data volume, make up for the problem of insufficient QAR data volume, provide important guarantee for realizing PHM technology space-ground interconnection, and provide effective support for civil machine fault diagnosis and predictive data analysis work.
The foregoing description is by way of example only and is not intended as limiting the application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. An airborne data transmission monitoring system is characterized by comprising an airborne access device and a data analysis monitoring device;
Wherein, the machine carries access arrangement and includes:
the data preprocessing module is used for acquiring initial data from the airborne system and preprocessing the initial data;
The data unpacking and encrypting module is used for unpacking the preprocessed data into small packets and encrypting each small packet;
The data transmission module is used for forming a communication packet according to the encrypted data and transmitting the communication packet to the data analysis device;
The data analysis monitoring device comprises:
The data acquisition module is used for acquiring the communication packet;
the data decryption module is used for decrypting the communication packet;
The data analysis device is used for generating a data monitoring result according to the decrypted data.
2. The system of claim 1, wherein the on-board system comprises a ground-to-air broadband communication system;
the data preprocessing module comprises:
And the processor unit is used for communicating with the ground-air broadband communication system to acquire initial data.
3. The system of claim 1, wherein the data preprocessing module is further to:
and processing the external switching value according to the initial data or the preprocessing result.
4. The system of claim 1, wherein the on-board access device further comprises:
And the clock system module is used for generating a corresponding output clock according to the initial data.
5. The system of claim 1, wherein the modules of the on-board access device are data transferred via a PCIe bus.
6. The system of claim 1, wherein the data decryption module transmits the decrypted data to the data analysis device via a PCIE bus.
7. The system of claim 1, wherein the data analysis device is deployed with data analysis software and a dynamic dependency library for encapsulating data processing modules that can be invoked by the data analysis software.
8. The system of claim 1, wherein the data decryption module is disposed on a PCIe board mounted on the data analysis device.
9. The system of claim 1, wherein the data acquisition module and the data decryption module are disposed on different boards.
10. The system of any one of claims 1 to 9, wherein one or more modules of the on-board access device or data parsing device are deployed with FPGA software.
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