Airborne data acquisition and transmission device and acquisition and transmission method

Abstract

The invention provides an airborne data acquisition and transmission device and an airborne data acquisition and transmission method, and relates to the technical field of avionics. The device mainly comprises an interface board, a backboard, an acquisition processing board, a radio frequency board, a power board and a display key board. The interface board is connected with the back board, and the back board is connected with one end of the acquisition processing board through an acquisition processing board slot on the back board; the other end of the acquisition processing board is connected with the display key board; the back plate and the radio frequency plate are connected through a radio frequency card slot position on the back plate; the back plate and the power panel are connected through a power panel slot on the back plate; and the acquisition processing board is used for acquiring and storing airborne data and transmitting the acquired airborne data to a ground data management end through the radio frequency board.

Description

Technical Field

[0001] The present application relates to the technical field of avionics systems, and in particular to an airborne data acquisition and transmission device and an acquisition and transmission method. Background Art

[0002] In recent years, aviation accidents have caused great shock globally, highlighting the limitations of the current air navigation system. These limitations prevent timely identification and location of the position of the distressed aircraft, and hinder the effective search and rescue work, resulting in delay or inability to recover the data of the flight recorder of the involved aircraft. This has prompted member states of the International Civil Aviation Organization (ICAO) and the global industry to systematically promote the tracking and monitoring of aircraft. In 2015, ICAO proposed the concept of the Global Aeronautical Distress and Safety System (GADSS) and adopted the draft operational concept. Among them, the air-ground data intercommunication for aircraft operation is one of the recommended items to be satisfied.

[0003] At the current stage, foreign countries conduct research on the data transmission of some recorders. They generally have sufficient recorder design capabilities. The real-time transmission recorder designs carried out mainly focus on the improvement of the recorder itself, which greatly changes the aircraft recording system architecture. In addition, the architecture design of the flight recording system supporting air-ground real-time transmission has been carried out, but it does not adapt to all bus models and link solutions, and there is no consideration for the ground-end data synchronization processing and analysis. Summary of the Invention

[0004] Embodiments of the present application provide an airborne data acquisition and transmission device and an acquisition and transmission method, which are used to solve the problems that traditional flight recorders on civil aircraft only store data on the aircraft and cannot decode and download it in time.

[0005] Embodiments of the present invention provide an airborne data acquisition and transmission device, and the device includes: an interface board, a backplane, an acquisition and processing board, a radio frequency board, a power supply board, and a display and key board;

[0006] The interface board is connected to the backplane, and one end of the backplane and the acquisition and processing board is connected through the slot for the acquisition and processing board on the backplane; the other end of the acquisition and processing board is connected to the display and key board;

[0007] The backplane and the radio frequency board are connected through the radio frequency card slot on the backplane; the backplane and the power supply board are connected through the power supply board slot on the backplane;

[0008] The acquisition and processing board is used to acquire and store airborne data, and transmit the acquired airborne data to the ground data management terminal through the radio frequency board.

[0009] In an optional embodiment, the device further includes: an EMC board;

[0010] The EMC board is disposed between the interface board and the backplane and is used to eliminate the interfering signals incoming from the connection.

[0011] In an optional embodiment, the radio frequency board includes: a pluggable SIM card module, a cellular wireless communication chain control circuit, a cellular data communication module, a wireless combiner, and a detachable antenna;

[0012] Wherein, one end of the cellular data communication module is connected to the cellular wireless communication chain control circuit, and the other end is connected to the wireless combiner; the detachable antenna is detachably connected through the wireless combiner.

[0013] In an optional embodiment, the pluggable SIM card module includes SIM card sockets, and each SIM card socket can install 1 SIM card for use by the cellular data communication module respectively.

[0014] In an optional embodiment, the acquisition and processing board includes: a local power supply circuit, an SOC circuit, an ARINC429 interface circuit, a discrete quantity interface circuit, an ARINC 717 interface circuit, a serial port circuit, an audio interface circuit, an Ethernet interface circuit, a real-time clock circuit, a single-board reset generation circuit, and a CF interface.

[0015] In an optional embodiment, the acquisition and processing board is used to acquire ARINC717 data of RTMU and DCU, ARINC644 bus data, ARINC429 data of RIU and GNSS system, audio analog signals of ACP and CCP, and acquire and process the discrete quantity signals input and output by the radio frequency board.

[0016] In an optional embodiment, the CF interface is used to connect an external CF card, and the CF card is used to store the airborne data acquired by the acquisition and processing board.

[0017] In an optional embodiment, the power supply board is used to convert the airborne 115VAC / 400Hz into a low-voltage DC power supply for use by other boards.

[0018] In an optional embodiment, the power supply board includes: an energy storage circuit, a voltage monitor, and an AD-DA, and the power supply board is powered by the on-board 115VAC 400Hz power supply.

[0019] An embodiment of the present invention provides an airborne data acquisition and transmission method, and the method includes:

[0020] Collect the ARINC717 data of the RTMU and DCU, the ARINC644 bus data, the ARINC429 data of the RIU and GNSS systems, and the audio analog signals of the ACP and CCP through the acquisition and processing board. Collect the discrete quantity signals input and output by the radio frequency board, and store the collected data on a removable CF card;

[0021] Frame the collected airborne data in a certain format, and transmit it to the ground data management terminal in real time through satellite communication according to the priority.

[0022] The present invention provides an airborne data acquisition and transmission device and an acquisition and transmission method. The device includes: an interface board, a backplane, an acquisition and processing board, a radio frequency board, a power supply board, and a display and keypad board; the interface board is connected to the backplane, and one end of the backplane and the acquisition and processing board is connected through the acquisition and processing board slot on the backplane; the other end of the acquisition and processing board is connected to the display and keypad board; the backplane and the radio frequency board are connected through the radio frequency card slot on the backplane; the backplane and the power supply board are connected through the power supply board slot on the backplane; the acquisition and processing board is used to collect and store airborne data, and transmit the collected airborne data to the ground data management terminal through the radio frequency board. Based on the flight record system architecture of data acquisition and real-time downlink, this application adds a radio frequency board on the basis of the flight recorder board card to realize real-time transmission to the high-performance portable real-time monitoring and data management module on the ground through satellite communication. Data recovery can be carried out when the flight recorder is not retrieved, reducing the cost of salvaging the flight recorder. Moreover, early warning before the accident and control during the accident can be carried out to reduce losses. Brief Description of the Drawings

[0023] Figure 1 It is an architecture diagram of an airborne data acquisition and transmission device provided by this application;

[0024] Figure 2 It is a schematic diagram of an airborne data acquisition and transmission method provided by this application. Detailed Embodiments

[0025] In order to better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of this application and the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. Without conflict, the technical features in the embodiments of this application and the embodiments can be combined with each other.

[0026] Please refer to Figure 1 , this application provides an airborne data acquisition and transmission device for an embodiment of the present invention. The device includes: an interface board, a backplane, an acquisition and processing board, a radio frequency board, a power supply board, and a display and keypad board;

[0027] The interface board is connected to the backplane, and one end of the backplane and the acquisition and processing board is connected through the slot for the acquisition and processing board on the backplane; the other end of the acquisition and processing board is connected to the display and keypad board; the backplane and the RF board are connected through the RF card slot on the backplane; the backplane and the power supply board are connected through the power supply board slot on the backplane; the acquisition and processing board is configured to acquire and store airborne data, and transmit the acquired airborne data to the ground data management terminal through the RF board.

[0028] Among them, the display and keypad board is used to provide functions of human-machine interaction interfaces such as indicating OLED and keys. The backplane is used to connect each single board and provide electrical interconnection for each single board. The interface board is used to connect the ARINC 600 connector and the EMC board. The CF card is used for data recording and software loading.

[0029] This embodiment has the function of real-time acquisition and transmission of airborne data, and the data originally to be stored in the flight recorder is transmitted in real time. It is no longer necessary to salvage the flight recorder to recover the data, which is conducive to timely carrying out accident investigations. It meets the requirements of the GADSS operation proposed by ICAO for timely recovery of flight recorder data. At the same time, it avoids the cost of salvaging the flight recorder, and can more carry out work such as pre-accident warning and in-accident control based on the real-time transmitted data, reducing losses.

[0030] This embodiment provides an airborne data acquisition and transmission device, which includes: an interface board, a backplane, an acquisition and processing board, an RF board, a power supply board, and a display and keypad board; the interface board is connected to the backplane, and one end of the backplane and the acquisition and processing board is connected through the slot for the acquisition and processing board on the backplane; the other end of the acquisition and processing board is connected to the display and keypad board; the backplane and the RF board are connected through the RF card slot on the backplane; the backplane and the power supply board are connected through the power supply board slot on the backplane; the acquisition and processing board is configured to acquire and store airborne data, and transmit the acquired airborne data to the ground data management terminal through the RF board. This application is based on the flight recorder system architecture of data acquisition and real-time transmission. An RF board is added on the basis of the flight recorder board to realize real-time transmission to the high-performance portable real-time monitoring and data management module on the ground through satellite communication. Data recovery can be carried out without salvaging the flight recorder, reducing the cost of salvaging the flight recorder, and more can carry out work such as pre-accident warning and in-accident control, reducing losses.

[0031] As Figure 1 shown, in an optional embodiment, the device further includes: an EMC board; the EMC board is disposed between the interface board and the backplane and is used to eliminate interference introduced from the rear connection.

[0032] The RF board includes: a pluggable SIM card module, a cellular wireless communication interlock control circuit, a cellular data communication module, a wireless combiner, and a detachable antenna. In an alternative embodiment, the RF board includes: a pluggable SIM card module, a cellular wireless communication interlock control circuit, four cellular data communication modules, two wireless combiners, and two detachable antennas; wherein, one end of the four cellular data communication modules is connected to the cellular wireless communication interlock control circuit, and the other end is connected to the two wireless combiners; the detachable antenna is detachably connected through the wireless combiner. The pluggable SIM card module includes four SIM card sockets, and each SIM card socket can install one SIM card, which are respectively used by the four cellular data communication modules. This module can be plugged and unplugged through the front panel, facilitating users to replace the SIM card. Through the four cellular data communication modules, the DAPU transmits data to the ground data management terminal. Among them, the detachable antenna is used to transmit / receive radio frequency signals, which can ensure that the DAPU is installed in the equipment compartment inside the aircraft hull and can communicate with the outside.

[0033] The acquisition and processing board includes: a local power supply circuit, an SOC circuit, an ARINC 429 interface circuit, a discrete quantity interface circuit, an ARINC 717 interface circuit, a serial port circuit, an audio interface circuit, an Ethernet interface circuit, a real-time clock circuit, a single-board reset generation circuit, and a CF interface. It is used to acquire ARINC717 data of the RTMU and DCU, ARINC644 bus data, ARINC429 data of the RIU and GNSS system, and audio analog signals of the ACP and CCP, and acquire and process the discrete quantity signals input and output by the RF board.

[0034] Specifically, the acquisition and processing board is mainly composed of 11 parts, including a local power supply circuit, an SOC circuit, an ARINC 429 interface circuit, a discrete quantity interface circuit (including ARINC591), an ARINC 717 interface circuit, a serial port circuit, an audio interface circuit, an Ethernet interface (ARINC664 interface and ARINC646 interface) circuit, a real-time clock (RTC) circuit, a single-board reset generation circuit, and a CF interface. It acquires ARINC717 data of the RTMU and DCU, acquires and analyzes ARINC644 bus data, acquires ARINC429 data of the RIU and GNSS system, acquires audio analog signals of the ACP and CCP, the ARINC646 interface can receive data from on-board test equipment, the ARINC646 interface conducts real-time data transmission with the satellite communication, and acquires and processes discrete quantity signals such as discrete quantity input and output of the RF interlock.

[0035] Such as Figure 1As shown, in an optional embodiment, the CF interface is used to connect to an external CF card, and the CF card is used to store the airborne data collected by the acquisition and processing board. The power supply board is used to convert the airborne 115VAC / 400Hz into a low-voltage DC power supply for other board cards. The power supply board includes: an energy storage circuit, voltage monitoring, and AD-DA. The power supply board is powered by the on-board 115VAC 400Hz power supply.

[0036] Please refer to Figure 2 , which is an airborne data acquisition and transmission method provided by an embodiment of the present invention. The method includes: collecting ARINC717 data of RTMU and DCU, ARINC644 bus data, ARINC429 data of RIU and GNSS system, audio analog signals of ACP and CCP through the acquisition and processing board, collecting and processing discrete signals input and output by the RF board, etc., and storing the collected airborne data on a removable CF card;

[0037] Frame the collected airborne data in a certain format, and transmit it to the ground data management terminal in real time through satellite communication according to the priority.

[0038] Specifically, the execution process of this transmission method can be as follows:

[0039] 1. Power supply: Powered by the on-board 115VAC 400Hz power supply;

[0040] 2. Data acquisition: Receive ARINC717 data of RTMU and DCU, receive RS422 data of RTMU, collect ARINC429 data of RIU and GNSS, collect a total of 4 channels of audio data of ACP and CCP, and collect and analyze ARINC664 bus data;

[0041] 3. Data storage: Store and record on the internal eMMC and removable CF card;

[0042] 4. Data transmission: Frame the collected data in a certain format, and transmit it to the ground high-performance portable real-time monitoring and data management module in real time through satellite communication according to the priority; after the flight, the flight data can be automatically downloaded through the wireless ground mobile network, and at the same time, the data can also be obtained by taking the card on the ground for ground analysis and processing;

[0043] 5. Data loading: Data can be loaded through the maintenance interface;

[0044] 6. Human-computer interaction: Perform human-computer interaction through the front panel display screen and buttons.

[0045] An airborne data acquisition and transmission method provided in this embodiment is based on the flight record system architecture for data acquisition and real-time downlink. A transmission module is added to the flight recorder board to achieve real-time transmission to a high-performance portable real-time monitoring and data management module on the ground through satellite communication. Data recovery can be performed even when the flight recorder has not been retrieved, reducing the cost of salvaging the flight recorder. Moreover, pre-accident warning and in-accident control can be carried out to minimize losses. Based on the data acquisition and transmission management method of the on-board flight recorder, according to the requirements for various types of data collected by the flight recorder for pre-accident warning, in-accident control, and post-accident recovery, a data acquisition and transmission plan for the flight recorder data is designed, and the acquisition and transmission paths for various data are determined.

[0046] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided in this application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0047] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An airborne data acquisition and transmission device, characterized in that, The device includes: an interface board, a backplane, a data acquisition and processing board, a radio frequency board, a power supply board, and a display and keypad board; The interface board is connected to the backplane, and one end of the backplane and the data acquisition and processing board is connected through the slot for the data acquisition and processing board on the backplane; the other end of the data acquisition and processing board is connected to the display and keypad board; The backplane and the radio frequency board are connected through the slot for the radio frequency card on the backplane; the backplane and the power supply board are connected through the slot for the power supply board on the backplane; The data acquisition and processing board is configured to acquire and store airborne data, and transmit the acquired airborne data to the ground data management terminal through the radio frequency board.

2. The device according to claim 1, wherein The device further includes: an EMC board; The EMC board is disposed between the interface board and the backplane, and is used to eliminate the interference signals introduced by the connection.

3. The device according to claim 2, characterized in that The radio frequency board includes: a pluggable SIM card module, a cellular wireless communication interlock control circuit, a cellular data communication module, a wireless combiner, and a detachable antenna; Wherein, one end of the cellular data communication module is connected to the cellular wireless communication interlock control circuit, and the other end is connected to the wireless combiner; the detachable antenna is connected and detached through the wireless combiner.

4. The device according to claim 3, characterized in that, The pluggable SIM card module includes SIM card sockets, and each SIM card socket can install 1 SIM card for use by the cellular data communication module respectively.

5. The device according to claim 1, characterized in that, The data acquisition and processing board includes: a local power supply circuit, a SOC circuit, an ARINC 429 interface circuit, a discrete quantity interface circuit, an ARINC 717 interface circuit, a serial port circuit, an audio interface circuit, an Ethernet interface circuit, a real-time clock circuit, a single-board reset generation circuit, and a CF interface.

6. The device according to claim 5, characterized in that, The data acquisition and processing board is configured to acquire the ARINC717 data of the RTMU and DCU, the ARINC644 bus data, the ARINC429 data of the RIU and GNSS system, the audio analog signals of the ACP and CCP, and acquire and process the discrete quantity signals input and output by the radio frequency board.

7. The device according to claim 5, characterized in that The CF interface is used to connect an external CF card, and the CF card is used to store the airborne data acquired by the data acquisition and processing board.

8. The device according to claim 1, characterized in that, The power supply board is configured to convert the airborne 115VAC / 400Hz into a low-voltage DC power supply for use by other boards.

9. The device according to claim 1, characterized in that The power supply board includes: an energy storage circuit, a voltage monitor, and an AD-DA, and the power supply board is powered by the on-board 115VAC 400Hz power supply.

10. An airborne data acquisition and transmission method, characterized in that, The method includes: Acquiring the ARINC717 data of the RTMU and DCU, the ARINC644 bus data, the ARINC429 data of the RIU and GNSS system, the audio analog signals of the ACP and CCP, and acquiring and processing the discrete quantity signals input and output by the radio frequency board through the data acquisition and processing board, and storing the acquired data on the detachable CF card; Framing the acquired airborne data in a certain format, and transmitting it to the ground data management terminal in real time through satellite communication according to the priority.

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