Onboard data loading recorder based on arinc 818 bus

Abstract

The application provides an ARINC818 bus-based airborne data loading recorder, which comprises a cabinet body, a power module, an audio and video processing subcard, an AFDX subcard and a data processing mainboard.

Description

Technical Field

[0001] This invention relates to the field of avionics technology, and more specifically to an airborne data loading recorder based on the ARINC818 bus. Background Technology

[0002] The ARINC818 bus features high bandwidth, high reliability, low latency, uncompressed operation, electromagnetic interference resistance, lightweight cabling, and high flexibility. It has become the unified standard for next-generation avionics digital video buses and is widely used in some commercial and military projects.

[0003] With technological advancements, there is an increasing demand for onboard data processing and storage, including flight data, audio data, video data, and bus monitoring data, as well as rapid loading of mission / planning data. Therefore, there is a pressing need for integrated aircraft data loading, transmission, processing, and storage, as well as video recording and caching. This necessitates the development of an airborne data load recorder based on the ARINC818 bus for onboard use. Summary of the Invention

[0004] In view of this, this application provides an airborne data loading recorder based on the ARINC818 bus, which is used in conjunction with an aircraft to perform comprehensive aircraft data loading, transmission, processing and storage. It is used for mission / planning data loading, and can record flight data, audio data, video data and bus monitoring data. It has a caching function and can forward video data.

[0005] This application provides the following technical solution: an airborne data loading recorder based on the ARINC818 bus, comprising:

[0006] The main body of the chassis is a sealed enclosure formed by an upper cover, a lower cover, a left side panel, a right side panel, a front panel, and a rear panel.

[0007] A power module is fixedly mounted on a cold plate. Multiple first protruding ridges are provided on the inner wall of the right side plate. The cold plate is fixedly assembled with the right side plate so that the power module is in close contact with the first protruding ridges.

[0008] An audio / video processing daughter card is provided with multiple second protruding ridges on the inner wall surface of the lower cover plate. The audio / video processing daughter card is fixedly mounted on the inner wall surface of the lower cover plate and closely attached to the second protruding ridges. An AFDX daughter card is mounted on the audio / video processing daughter card for monitoring avionics bus data and loading mission / planning data through the AFDX bus.

[0009] The data processing motherboard has multiple third protruding ridges on the inner wall surface of the left side plate. The data processing motherboard is fixedly mounted on the inner wall surface of the left side plate and is in close contact with the third protruding ridges.

[0010] The audio / video processing daughter card and the data processing motherboard are connected within the main body of the chassis via a flexible plate, and the power module is electrically connected to the data processing motherboard.

[0011] According to one embodiment of this application, the audio and video processing daughter card is provided with an optical receiving module. The video signal of the ARINC818 bus enters the airborne data loading recorder through the optical fiber connector. After being connected to the optical receiving module, it is converted into photoelectric signal and connected to the chip in the form of a high-speed differential signal for receiving, decoding and converting the video signal of the ARINC818 bus.

[0012] According to one embodiment of this application, after the video signal of the ARINC818 bus is connected to the fiber optic connector, it is connected to the MT head in the optical receiving module via the optical cable assembly.

[0013] According to one embodiment of this application, the audio / video processing sub-card is further provided with an analog signal acquisition interface, an RS-422 bus interface, a 100Mbps Ethernet bus interface, and a Gigabit Ethernet bus interface, for acquiring audio data from the CNI device through the analog signal acquisition interface, acquiring timing data from the CNI device through the RS-422 bus interface, receiving flight data and GJB289A bus monitoring data sent by the flight parameter device through the 100Mbps Ethernet bus interface, and receiving video data sent by onboard devices through the Gigabit Ethernet bus interface.

[0014] According to one embodiment of this application, a card mechanism for inserting and removing data cards is mounted on the front panel of the chassis body, and a door is provided on the front panel corresponding to the opening position of the card mechanism. The data card is connected to the audio and video processing daughter card via a flexible connection.

[0015] According to one embodiment of this application, at least two circular electrical connectors for signal cross-linking with onboard equipment are mounted on the rear panel of the chassis body.

[0016] According to one embodiment of this application, one of the at least two circular electrical connectors is connected to the audio / video processing daughter card via a flexible board.

[0017] According to one embodiment of this application, the chassis body is made of 6061 rust-resistant aluminum alloy material and is formed by vacuum brazing.

[0018] According to one embodiment of this application, an O-ring and a conductive rubber plate are respectively embedded in the upper and lower cover plates of the chassis body.

[0019] According to one embodiment of this application, the front panel of the chassis body is equipped with multiple sets of quick-release latches for quick-release operation.

[0020] Compared with the prior art, the beneficial effects achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: The airborne data loading recorder based on the ARINC818 bus of the present invention can receive and compress ARINC818 bus video, receive and compress audio signals, receive RS-422 bus data, has discrete signal acquisition function, has the ability to support AFDX daughter cards, has gigabit and 100-megabit Ethernet communication function, has SATA interface communication capability, can complete time stamp management and data packaging management capability, and has an airborne data loading recorder with a storage capacity of 1TB. Furthermore, the data loading recorder of the present invention is designed as an airborne accessory for a certain type of aircraft and features high reliability, small size, and fast data loading and unloading speed. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the airborne data loading recorder according to an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional external view of the airborne data loading recorder according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the rear panel flexible plate layout according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the external structure of the optical receiving module according to an embodiment of the present invention;

[0026] Among them, 1-power module, 2-audio and video processing daughter card, 3-AFDX daughter card, 4-data processing motherboard, 5-flexible board, 6-cold plate, 7-chassis body, 8-top cover, 9-bottom cover, 10-left side panel, 11-right side panel, 12-card mechanism, 13-door, 14-front panel, 15-rear panel, 16-quick release latch, 17-data card, 18-circular electrical connector. Detailed Implementation

[0027] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0028] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] like Figures 1-2 As shown, this embodiment of the invention provides an airborne data loading recorder based on the ARINC818 bus, comprising:

[0030] The main body of the chassis 7 is a sealed enclosure formed by an upper cover plate 8, a lower cover plate 9, a left side plate 10, a right side plate 11, a front panel 14, and a rear panel 15.

[0031] The power module 1 is fixedly mounted on the cold plate 6. The inner wall of the right side plate 11 is provided with multiple first protruding ridges. The cold plate 6 and the right side plate 11 are fixedly assembled so that the power module 1 is in close contact with the first protruding ridges. The power module 1 is assembled in close contact with the right side plate 11. The power devices in the power module 1 are cooled by the cold plate 6 and the first protruding ridges raised on the right side plate 11, so as to ensure its reliability.

[0032] The audio / video processing daughter card 2 has multiple second protruding ridges on the inner wall surface of the lower cover plate 9. The audio / video processing daughter card 2 is fixedly mounted on the inner wall surface of the lower cover plate 9 and is in close contact with the second protruding ridges. The audio / video processing daughter card 2 is equipped with an AFDX daughter card 3, which is used to monitor avionics bus data and load mission / planning data through the AFDX bus. The second protruding ridges raised by the lower cover plate 9 are used to dissipate heat from the power devices in the AFDX daughter card 3.

[0033] The data processing motherboard 4 has multiple third protruding ridges on the inner wall surface of the left side plate 10. The data processing motherboard 4 is fixedly mounted on the inner wall surface of the left side plate 10 and is in close contact with the third protruding ridges. The third protruding ridges raised from the left side plate 10 are used to dissipate heat from the power devices in the data processing motherboard 4.

[0034] The audio / video processing daughter card 2 and the data processing motherboard 4 are connected in the inner cavity of the chassis body 7 via a flexible plate 5. The power module 1 is used in conjunction with the socket on the data processing motherboard 4 via the built-in cable plug on the card.

[0035] In this embodiment, the power module 1 and the data processing motherboard 4 are respectively mounted closely to the left side panel 10 and the right side panel 11 of the product. The power devices face the side panels of the chassis. The left side panel 10 and the right side panel 11 of the chassis have raised ridges that are close to the heat dissipation surface of the power devices, which effectively reduces the heat.

[0036] In this embodiment, the audio / video processing daughter card 2 is equipped with an optical receiving module. The video signal from the ARINC818 bus enters the onboard data loading recorder via a fiber optic connector. After being connected to the optical receiving module, it undergoes photoelectric conversion and is input into the chip as a high-speed differential signal for receiving, decoding, and converting the ARINC818 bus video signal. The ARINC818 bus video signal, after entering the fiber optic connector, connects to the MT head in the optical receiving module via an optical cable assembly. The optical cable assembly, while ensuring the shortest bending radius, has through-holes in the audio / video processing daughter card 2, and is secured with binding wires to improve reliability. The optical cable assembly and the optical receiving module are connected via the MT head, making insertion convenient and facilitating disassembly and maintenance. A schematic diagram of the external structure of the optical receiving module is shown below. Figure 4 As shown.

[0037] The audio and video processing sub-card 2 is also equipped with an analog acquisition interface, an RS-422 bus interface, a 100 Mbps Ethernet bus interface, and a Gigabit Ethernet bus interface. It is used to acquire audio data from CNI (General Purpose Airborne Communication, Navigation and Identification) devices through the analog acquisition interface, acquire timing data from CNI devices through the RS-422 bus interface, receive flight data and GJB289A bus monitoring data sent by flight parameter devices through the 100 Mbps Ethernet bus interface, and receive video data sent by onboard devices through the Gigabit Ethernet bus interface. After processing the above data, it is stored in the data card 17, realizing the functions of aircraft integrated data loading, transmission, processing and storage, as well as video recording and caching.

[0038] In this embodiment, a card mechanism 12 for inserting and removing the data card 17 is mounted on the front panel 14 of the chassis body 7. A door 13 is provided on the front panel 14 corresponding to the opening position of the card mechanism 12. When the door 13 is opened, the data card 17 can be taken out, facilitating the insertion and removal of the data card 17. The data card 17 is connected to the audio / video processing daughter card 2 via a flexible connection.

[0039] In this embodiment, at least two circular electrical connectors 18 for signal cross-linking with onboard equipment are mounted on the rear panel 15 of the chassis body 7. One of the at least two circular electrical connectors 18 is connected to the audio / video processing daughter card 2 via a flexible board. In a specific embodiment, the data loading recorder externally cross-links with other onboard equipment via three circular electrical connectors 18. To improve the manufacturability of the product design, in addition to the fiber optic connector, the other two circular electrical connectors 18 cross-link with the internal audio / video processing daughter card 2 via a flexible board, enabling a wiring-free process directly within the chassis, reducing product weight, and improving product reliability. A schematic diagram of the flexible board layout is shown below. Figure 3 As shown.

[0040] In this embodiment, the chassis body 7 adopts a natural heat dissipation sealed chassis structure. For power devices, it employs a structure with good contact and thermal conductivity with the left side panel 10, right side panel 11, and lower cover 9 of the chassis, further transferring heat to the low-temperature region. The chassis body 7 is made of 6061 rust-resistant aluminum alloy material, formed by vacuum brazing, possessing sufficient strength and rigidity, and can effectively resist mold, salt spray, and damp heat testing environments.

[0041] The upper cover plate 8 and lower cover plate 9 of the main body of the chassis 7 are respectively fitted with O-rings and conductive rubber seals, which not only give the data loading recorder good electromagnetic compatibility, but also good resistance to salt spray, moisture and heat, and mold. The front panel 14 of the main body of the chassis 7 is equipped with multiple sets of quick-release latches 16 for quick-release operation.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An airborne data loading recorder based on the ARINC818 bus, characterized in that, include: The main body of the chassis is a sealed enclosure formed by an upper cover, a lower cover, a left side panel, a right side panel, a front panel, and a rear panel. A power module is fixedly mounted on a cold plate. Multiple first protruding ridges are provided on the inner wall of the right side plate. The cold plate is fixedly assembled with the right side plate so that the power module is in close contact with the first protruding ridges. An audio / video processing daughter card is provided with multiple second protruding ridges on the inner wall surface of the lower cover plate. The audio / video processing daughter card is fixedly mounted on the inner wall surface of the lower cover plate and closely attached to the second protruding ridges. An AFDX daughter card is mounted on the audio / video processing daughter card for monitoring avionics bus data and loading mission / planning data through the AFDX bus. The data processing motherboard has multiple third protruding ridges on the inner wall surface of the left side plate. The data processing motherboard is fixedly mounted on the inner wall surface of the left side plate and is in close contact with the third protruding ridges. The audio / video processing daughter card and the data processing motherboard are connected in the inner cavity of the chassis body via a flexible plate, and the power module is electrically connected to the data processing motherboard; The audio and video processing sub-card is also equipped with an analog signal acquisition interface, an RS-422 bus interface, a 100 Mbps Ethernet bus interface, and a Gigabit Ethernet bus interface. These interfaces are used to acquire audio data from the CNI device via the analog signal acquisition interface, acquire timing data from the CNI device via the RS-422 bus interface, receive flight data and GJB289A bus monitoring data from the flight parameter device via the 100 Mbps Ethernet bus interface, and receive video data from onboard devices via the Gigabit Ethernet bus interface.

2. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, The audio / video processing daughter card is equipped with an optical receiving module. The video signal of the ARINC818 bus enters the airborne data loading recorder through the optical fiber connector. After being connected to the optical receiving module, it undergoes photoelectric conversion and is connected to the chip in the form of a high-speed differential signal. This is used to receive, decode, and convert the video signal of the ARINC818 bus.

3. The airborne data loading recorder based on the ARINC818 bus according to claim 2, characterized in that, After the video signal of the ARINC818 bus is connected to the fiber optic connector, it is connected to the MT head in the optical receiving module via the optical cable assembly.

4. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, The front panel of the main body of the chassis is equipped with a card mechanism for inserting and removing data cards. A door is provided on the front panel corresponding to the opening position of the card mechanism. The data card is connected to the audio and video processing daughter card through a flexible connection.

5. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, At least two circular electrical connectors for signal cross-linking with onboard equipment are mounted on the rear panel of the main body of the chassis.

6. The airborne data loading recorder based on the ARINC818 bus according to claim 5, characterized in that, At least one of the two circular electrical connectors is connected to the audio / video processing daughter card via a flexible board.

7. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, The main body of the chassis is made of 6061 rust-proof aluminum alloy and is formed by vacuum brazing.

8. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, The upper and lower cover plates of the main body of the chassis are respectively fitted with O-rings and conductive rubber plates.

9. The airborne data loading recorder based on the ARINC818 bus according to claim 1, characterized in that, The front panel of the main body of the chassis is equipped with multiple sets of quick-release latches for quick disassembly.

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