Cooperative equipment for front cabin and rear cabin of airplane
By designing the motherboard, backplane, and interface board independently and connecting them with FPGA modules, the problems of signal interference and structural complexity in the collaborative equipment between the front and rear cabins of an aircraft were solved, thereby improving signal integrity and equipment compactness, and enhancing the flexibility and network stability of the equipment.
Patent Information
- Application Number
- CN202520162859.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-23
AI Technical Summary
In existing aircraft cabin coordination equipment, signal integrity is difficult to guarantee, the equipment structure is complex and inflexible, it cannot meet the compact requirements of the aerospace electronics field, and the ARINC interface of different aircraft models is inconsistent, resulting in poor equipment compatibility.
The design employs three independent boards: a motherboard, a backplane, and an interface board. The motherboard houses the processor and switching module, while the backplane contains the switching module and shielded cables. These are connected via an FPGA module to avoid signal interference. Floating interfaces are provided on the motherboard to improve scalability, and an antenna panel is used instead of a combiner to save space.
It improves signal stability and integrity, reduces equipment size, enhances equipment flexibility and scalability, ensures network security and stability, and saves onboard space.
Smart Images
Figure CN223796943U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of airborne communications, and in particular to a collaborative device for the front and rear cabins of an aircraft. Background Technology
[0002] With the development of high-throughput broadband satellite technology, the need for coordination between the cockpit (front cabin) and passenger cabin (rear cabin) of aircraft is increasing. Traditional air-to-ground flight data transmission occurs after the aircraft lands, for example, via Quick Access Recorder (QAR) or Wireless Quick Access Recorder (WQAR). The black box, used as data backup, is reserved for emergency situations. These traditional data transmission methods cannot achieve real-time air-to-ground data transmission or coordinated operation between the front and rear cabins (cockpit and passenger cabin). In recent years, the widespread adoption of in-flight connectivity (IFC) and in-flight entertainment (IFE) systems has provided higher communication bandwidth for both onboard and ground-based systems, making real-time air-to-ground data synchronization and real-time coordinated operation between the front and rear cabins possible.
[0003] In existing technologies, equipment used for cockpit-cabin collaboration often incorporates multiple types of interfaces (e.g., Ethernet, SATA, cellular, Wi-Fi, ARINC 429 / 717, discrete I / O control, etc.) to meet diverse data transmission needs. However, current collaboration equipment typically employs a single-board design. The presence of numerous interfaces on a single board leads to several issues: the coexistence of analog signals (e.g., cellular and Wi-Fi) and digital signals (e.g., ARINC 429) makes signal integrity difficult to guarantee. Furthermore, existing cockpit-cabin collaboration equipment generally uses combiners to connect multiple cellular signals, but combiners are bulky, resulting in complex equipment designs that fail to meet the compactness requirements of aerospace electronics. In addition, different aircraft models have different ARINC-related interfaces, requiring multiple different boards for adaptation to varying ARINC interface requirements, which is highly inflexible. Utility Model Content
[0004] In view of the above-mentioned problems of the prior art, this application provides an aircraft front and rear cabin coordination device that can ensure the integrity and reliability of data transmission, and can also reduce the size of the device and save onboard space.
[0005] To achieve the above objectives, the first aspect of this application provides an aircraft front and rear cabin coordination device, comprising: a motherboard, wherein the motherboard is provided with a processor, an enable circuit and a plurality of motherboard switching modules, the plurality of motherboard switching modules being connected in series to form a chain structure, the motherboard switching module located at the first end of the chain structure being connected to the processor, and the motherboard switching module located at the end of the chain structure being connected to the enable circuit; a backplane, wherein the backplane is provided with a ribbon cable connector and a first interface board connector connected to the ribbon cable connector, the ribbon cable connector also being connected to the plurality of motherboard switching modules; the backplane is also provided with a backplane switching module, the backplane switching module being connected to the enable circuit; and an interface board, wherein the interface board is provided with a second interface board connector, the second interface board connector being connected to the first interface board connector, and the second interface board connector also being connected to the backplane switching module.
[0006] As described above, this approach divides the aircraft's front and rear cabin coordination equipment into three independent boards: the motherboard, the backplane, and the interface board. This avoids signal interference between the modules on these three boards, thereby improving signal stability and integrity. Furthermore, the independent board design facilitates board replacement. In this approach, not only is a switching module located on the motherboard, but an independent switching module is also located on the backplane, allowing for easy expansion without changing the motherboard configuration. In this approach, an enable circuit connects the motherboard switching module and the backplane switching module. This enable circuit is disabled by default upon power-up. After the user completes interface initialization, the enable circuit is either enabled or disabled based on the user's selection. This avoids loop problems caused by the lack of VLAN isolation when users simultaneously use multiple Ethernet ports, further ensuring network security and stability.
[0007] As one implementation of this aspect, it further includes: an FPGA module disposed on the motherboard, the FPGA module being connected to the processor; a shielded ribbon cable and multiple protocol interfaces disposed on the backplane, the shielded ribbon cable being connected to the multiple protocol interfaces and the shielded ribbon cable also being connected to the FPGA module; and a low-speed data interface disposed on the interface board, the low-speed data interface being connected to the multiple protocol interfaces.
[0008] As described above, by placing multiple protocol interfaces on the backplane and connecting them to the FPGA on the motherboard via shielded cables, interference from signals on the motherboard to the signals transmitted through the protocol interfaces can be avoided, thus ensuring the integrity and correctness of the signals.
[0009] As one implementation of this aspect, the external connection interface of the motherboard switching module located at the end of the chain structure is left floating.
[0010] As described above, by setting the external interface of the switching module on the motherboard in a floating state, the scalability of the motherboard's switching interface is ensured, and the flexibility of the devices that can be connected to the motherboard is improved.
[0011] As one implementation of this aspect, it further includes: multiple debugging modules disposed on the motherboard, the debugging modules including a whole-system debugging module and a single-board debugging module; the whole-system debugging module includes at least two, one of which is connected to the motherboard switching module located at the first end of the chain structure, and the other is connected to the backplane switching module located on the backplane; the single-board debugging module includes multiple, and the multiple single-board debugging modules are respectively connected to the remaining motherboard switching modules in the chain structure one-to-one; wherein, the remaining motherboard switching modules are the remaining motherboard switching modules in the chain structure excluding the motherboard switching module at the first end.
[0012] As described above, by setting up a whole-machine debugging module and a single-board debugging module to perform regular debugging of the whole machine and single boards respectively, the security of the network equipment is ensured.
[0013] As one implementation of this aspect, it further includes: a first group of USB interfaces disposed on the motherboard, the first group of USB interfaces being connected to the processor, the first group of USB interfaces including multiple USB interfaces, the multiple USB interfaces being respectively connected to multiple cellular communication modules, the multiple cellular communication modules being connected to a first multi-interface antenna panel; wherein, the multiple cellular communication modules have different communication frequency bands.
[0014] As described above, by connecting multiple cellular communication modules, cellular communication capabilities and the adaptability of cellular networks on flight routes are improved. Furthermore, replacing the combiner connecting the cellular communication modules in existing technologies with an antenna panel can save significant space, allowing for a more compact design of the entire aircraft's front and rear cabin coordination equipment.
[0015] As one implementation of this aspect, it also includes: a SIM interface disposed on the motherboard, wherein each cellular communication module is connected to multiple SIM interfaces.
[0016] As one implementation of this aspect, it further includes: a second set of USB interfaces disposed on the motherboard, the second set of USB interfaces being connected to the processor, the second set of USB interfaces including multiple USB interfaces, the multiple USB interfaces being respectively connected to multiple positioning modules, the multiple positioning modules being connected to a second multi-interface antenna panel; wherein, the multiple positioning modules are positioning modules of different types.
[0017] As described above, by setting up multiple positioning modules to form a redundant positioning system, the system can switch to other positioning modules when one fails, ensuring flight safety. Furthermore, replacing the combiner connecting the positioning modules in existing technology with an antenna panel can save significant space, allowing for a more compact design of the entire aircraft's front and rear cabin coordination equipment.
[0018] As one implementation of this aspect, it further includes: a third set of USB interfaces disposed on the motherboard, the third set of USB interfaces being connected to the processor, the third set of USB interfaces including one or more USB interfaces, the one or more USB interfaces being suspended to serve as external USB interfaces reserved by the motherboard.
[0019] As described above, by setting up a set of floating USB ports on the motherboard, the motherboard's USB ports can be made expandable, thereby improving the flexibility of the devices that can be connected to the motherboard.
[0020] As one implementation of this aspect, it further includes: a storage module disposed on the motherboard, the storage module being connected to the processor; the storage module including a FLASH module connected to the processor; and / or the storage module including a SATA interface module connected to the processor, the SATA interface module being used to connect an external storage device.
[0021] As a result, the onboard FLASH module and SATA interface module that can connect to external storage devices have enriched the types of storage chips and improved the scalability and flexibility of the storage module.
[0022] As one implementation of this aspect, the motherboard and the backplate are connected by a T-type plug-in method.
[0023] As shown above, connecting the motherboard and backplate via a T-shaped plug-in method not only ensures a secure connection but also saves cables and space. Attached Figure Description
[0024] The various technical features of this application and their relationships will be further explained below with reference to the accompanying drawings. The drawings are exemplary; some technical features are not shown to scale, and some drawings may omit technical features commonly used in the art to which this application pertains that are not essential for understanding and implementing this application, or additionally show technical features that are not essential for understanding and implementing this application. In other words, the combination of various technical features shown in the drawings is not intended to limit this application. Furthermore, throughout this application, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:
[0025] Figure 1A schematic diagram of an aircraft front and rear cabin coordination device provided in this application embodiment;
[0026] Figure 2 A schematic diagram showing the connection between the processor and the USB interface provided in an embodiment of this application;
[0027] Figure 3 This is a schematic diagram of the separation of circuit boards for a collaborative device between the front and rear cabins of an aircraft, provided as an embodiment of this application. Detailed Implementation
[0028] The technical solutions provided in this application will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the device structures and business scenarios provided in the embodiments of this application are mainly for illustrating possible implementations of the technical solutions of this application and should not be construed as the sole limitation on the technical solutions of this application. Those skilled in the art will recognize that, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this application are equally applicable to similar technical problems.
[0029] It should be understood that the embodiments of this application provide a collaborative device for the front and rear cabins of an aircraft. Since these technical solutions solve the problem in the same or similar principles, some repetitive details may not be repeated in the following description of specific embodiments, but it should be considered that these specific embodiments have mutual references and can be combined with each other.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.
[0031] Before introducing the embodiments of the aircraft cockpit-front cabin collaboration device provided in this application, we will first introduce the application scenarios of this aircraft cockpit-front cabin collaboration device. This aircraft cockpit-front cabin collaboration device is applied in the aviation field. Through the various communication interfaces and functional modules provided by the device, data transmission and real-time collaboration between the cockpit (front cabin) and the passenger cabin (rear cabin) can be realized. For example, during the flight preparation phase, flight plans, meteorological data, etc. can be obtained from the ground or the cloud through this device; for example, during the takeoff and cruise phases, various flight parameters (such as speed, altitude, attitude, etc.) can be collected through this device.
[0032] It should be understood that the above application scenarios are illustrative and are not intended to limit the scope of this application.
[0033] This application provides an embodiment of an aircraft front and rear cabin coordination device, which will be described in detail below with reference to the accompanying drawings. It should be noted that the "connection" between the various devices and modules in the aircraft front and rear cabin coordination device of this application can be a physical connection or a communication connection.
[0034] like Figure 1 The diagram shown is a schematic of an aircraft front and rear cabin coordination device provided in an embodiment of this application. This device includes a main board A, a backplane B, and an interface board C. By rationally arranging components on the main board A, backplane B, and interface board C, the device not only improves the reliability of data transmission but also reduces size and saves space. The main board A and backplane B are connected using a T-type plug-in connection. Specifically, the aircraft front and rear cabin coordination device includes:
[0035] The processor 101 (i.e.,) is located on motherboard A. Figure 1 The CPU shown is used to manage its own input / output (I / O) quantities and control external devices or interfaces. It also runs an embedded operating system and manages critical control logic. The processor 101 supports multi-interface expansion, for example, it can use a dual-core ARM chip. Specifically, the processor 101 may include a state logic control module, which uses data collected from various modules to implement logic control.
[0036] Multiple motherboard switching modules are installed on motherboard A. These multiple motherboard switching modules are connected in series to form a chain structure. The motherboard switching module located at the first end of this chain structure ( Figure 1 The motherboard first switching module (represented by 102a) is connected to the processor 101, and the motherboard switching module (represented by 102a) is located at the end of this chain structure. Figure 1 The motherboard second switching module (represented by 102b) is connected to the enable circuit 103 located on the motherboard A. Furthermore, the external connection interface (i.e., switching interface) of the motherboard switching module located at the end of this chain structure can be in a reserved state, i.e., floating, thereby enabling the motherboard switching module's switching interface to be expandable. As one implementation, for example, the multiple motherboard switching modules may include two, i.e. Figure 1 The motherboard first switching module 102a and motherboard second switching module 102b shown are connected in series to form a chain structure. The motherboard first switching module 102a, located at the beginning of the chain structure, is connected to the processor 101 through a physical layer device (PHY). The motherboard second switching module 102b in the chain structure is connected to the backplane switching module 203 through an enable circuit 103 (i.e., Figure 1The hardware enable circuit is connected and enabled via the FPGA's I / O. The switching interface of the motherboard's second switching module 102b is reserved. It should be understood that the above example of two motherboard switching modules is exemplary; in other embodiments, the number may vary.
[0037] The ribbon cable connector 201, located on the backplane B, connects to multiple motherboard switching modules. In this embodiment, for example, the ribbon cable connector 201 can be a high-speed ribbon cable connector, which connects to the switching interfaces of the first switching module 102a and the second switching module 102b of the motherboard.
[0038] The first interface board connector 202 is disposed on the back panel B and is connected to the ribbon cable connector 201.
[0039] A backplane switching module 203 is disposed on the backplane B and is connected to an enable circuit 103 on the motherboard A. The backplane switching module 203 may include one or more.
[0040] The enable circuit 103, located on motherboard A, is a hardware enable circuit that forms the communication link between the second switching module 102b, located at the end of the chain structure on motherboard A, and the backplane switching module 203, located on backplane B. This enable circuit 103 is controlled via the I / O ports of processor 101 and through an FPGA. It is disabled by default upon power-up. After the user completes interface initialization, the enable circuit 103 can be enabled or disabled based on the user's selection. This configuration avoids loop-like problems caused by the lack of VLAN isolation when users simultaneously use multiple Ethernet ports, thus ensuring network security and stability.
[0041] In this embodiment, the motherboard switching module (including the first motherboard switching module 102a and the second motherboard switching module 102b) and the backplane switching module 203 can, for example, use MARVELL chips, with a single chip supporting 6 ports. The switching modules on the motherboard are connected in series and softly connected to the backplane via high-speed ribbon cables. The independently configured switching modules on the backplane allow for additional expansion without changing the motherboard configuration, making the entire device more flexible.
[0042] A second interface board connector 301 is disposed on interface board C. This second interface board connector 301 is connected to the first interface board connector 202 and also to the backplane switching module 203 on backplane B. For example, the second interface board connector 301 can be an Aricn600 model. The second interface board connector 301 may include one or more high-speed Ethernet data interfaces. The second interface board connector 301 may also include one or more transformers for voltage conversion of the received data as required.
[0043] It should be understood that the above interfaces are all exemplary descriptions and are not intended to limit the scope of this application.
[0044] The FPGA module 104 is located on motherboard A and is connected to the GPIO interface of processor 101.
[0045] A shielded ribbon cable 204 and various protocol interfaces 205 connected to the shielded ribbon cable 204 are disposed on the backplane B. The shielded ribbon cable 204 is also connected to the FPGA module 104. In this embodiment, for example, the shielded ribbon cable 204 can be a P120 coaxial shielded ribbon cable; the various protocol interfaces 205 may include, for example, a 429 interface, a DIS (Discrete Component Index) interface, a 717 interface, etc. Specifically:
[0046] The 429 interface is primarily used for data transmission via the ARINC429 protocol, a commonly used protocol in aircraft. Each chip supports one transmit and two receive signals. For example, this paper uses two chips connected in parallel, which enables two transmit and four receive signals. Flight information of the aircraft is collected based on this 429 interface, and then the data is transmitted out via the 429 bus protocol. For example, this 429 interface can collect the flight information listed in the table below (it should be understood that this is an exemplary description and not intended to limit the scope of this application):
[0047]
[0048]
[0049] The DIS interface is used to acquire discrete signals on the aircraft, including but not limited to airborne sensor signals and switching signals in the front cabin, such as the opening and closing of the cabin door, the contact of the aircraft tires with the ground, and the status of the aircraft handbrake.
[0050] The 717 bus is a digital data bus used in avionics systems. It uses differential signals for data transmission, has good anti-interference capabilities, and can provide high-speed, reliable, and secure data transmission.
[0051] The low-speed data interface 302 is located on the interface board C, and the low-speed data interface 302 is connected to the various protocol interfaces 205 in the backplane B. Figure 1 The low-speed data interface can be connected via the 429 interface, DIS interface, and 717 interface. In this embodiment, for example, the Arinc600 model can be selected.
[0052] In some embodiments, the interface board C further includes a radio frequency (RF) module and a power supply (POWER) module. The RF module is used to enable wireless communication, and the POWER module is used to supply power to the interface board.
[0053] Multiple debugging modules are located on motherboard A. These debugging modules include a system-wide debugging module for overall system debugging (i.e., Figure 1 The system includes a device debugging module 105 and a single-board debugging module 106 for debugging single boards. The system debugging module (device debugging module 105) comprises at least two modules, one of which exchanges with the motherboard module located at the head of the chain structure (i.e.,...). Figure 1 One is connected to the first motherboard switching module 102a), and the other is connected to the backplane switching module 203 located on the backplane. Multiple single-board debugging modules 106 are included, their number being one less than the total number of motherboard switching modules in the chain structure. Each single-board debugging module 106 is connected one-to-one with the remaining motherboard switching modules in the chain structure, excluding the first-end motherboard switching module. In this embodiment, the device debugging module 105 includes an M1 debugging module and an M2 debugging module. The M1 debugging module is connected to the first motherboard switching module 102a and is used to debug the motherboard A. The M2 debugging module is connected to the backplane switching module 203 and is used to debug the backplane B during the overall system assembly stage. In this embodiment, the first switching module 102a and the second switching module 102b of the chain structure are also each connected to a single-board debugging module 106, allowing the user to debug each switching module during the single-board stage.
[0054] The first set of USB interfaces 107 (USBHUB1) located on motherboard A is connected to processor 101 via USB1 interface on processor 101. This first set of USB interfaces 107 includes multiple USB ports, each connected to multiple cellular communication modules 108. The multiple cellular communication modules 108 are connected to a first multi-interface antenna panel 109, which is also located on motherboard A. The multiple cellular communication modules 108 operate on different communication frequency bands. In this embodiment, connecting multiple cellular communication modules via the first multi-interface antenna panel not only supports multi-channel, multi-band cellular signal transmission but also saves space compared to a combiner.
[0055] In some embodiments, the output side of the cellular communication module 108 is further provided with a filter module for filtering the signal to avoid interference.
[0056] The SIM interface 110 is located on the motherboard A, and each cellular communication module 108 can connect to multiple SIM interfaces 110.
[0057] In this embodiment, for example, the first group of USB interfaces 107 may include three USB interfaces, each connected to a cellular communication module (e.g., a 4G / 5G module) 108, thus forming three cellular communication links. These three cellular communication links are completely independent and cannot operate simultaneously on the same frequency band to avoid interference. When only one available cellular frequency band exists on the ground, only one of the three cellular communication modules can operate, with the other two serving as backups. When multiple available cellular frequency bands exist on the ground, the three cellular communication modules can operate simultaneously, with their specific control logic and load balancing dynamically controlled by a preset algorithm based on actual service requirements.
[0058] In this embodiment, each cellular communication module 108 is connected to three SIM interfaces 110, which are used to connect SIM cards. Only one of the three SIM cards connected to the same cellular communication module can operate at a time, i.e., a three-choice mode. The operator information for each SIM card is pre-entered into a database. The processor determines the operator information based on location information. If the operator is a known operator, the processor directly selects the corresponding SIM card to access the network. If the operator is an unknown operator, the processor sequentially connects the three SIM cards and saves the corresponding operator information locally.
[0059] The second set of USB ports 111 (USBHUB2) is located on motherboard A and is connected to processor 101 via USB2 port on processor 101. This second set of USB ports 111 includes multiple USB ports, each connected to multiple positioning modules 112. The multiple positioning modules 112 are connected to a second multi-interface antenna panel 113, which is also located on motherboard A. The multiple positioning modules 112 are of different types.
[0060] In this embodiment, for example, the second set of USB interfaces 111 may include two USB interfaces. One USB interface connects to the BeiDou module, which can use a third-generation GPS chip (GSW 3.0 / 3.1). The other USB interface connects to the GPS module, which can use a BeiDou-3 navigation chip, and has the function of full-system, full-frequency, high-precision navigation and positioning for airborne routing communication equipment. Both the BeiDou module and the GPS module are connected to the second multi-interface antenna panel 113. Through the two positioning modules, the real-time position of the aircraft can be located more accurately. In addition, the two positioning modules are redundant, so if one fails, the other positioning module can be used for positioning, thereby ensuring flight safety.
[0061] The third USB interface 114, located on motherboard A, is connected to processor 101 via the USB3 interface on processor 101. It includes one or more USB interfaces, all of which are floating and can be used as external USB interfaces reserved on the motherboard to expand the motherboard's functions.
[0062] like Figure 2 The diagram shows the connection between the processor and USB interfaces on motherboard A, including a first USB interface 107, a second USB interface 111, and a third USB interface 114. The first USB interface 107 uses a USB hub chip and connects to external modules (such as cellular communication modules), which are represented by Module 1 to Module 3 in the diagram. The second USB interface 111 uses a USB hub chip and connects to GPS and BDS (BeiDou navigation systems). The third USB interface 114 is a floating interface extended from the processor, serving as an extension of the motherboard's USB interfaces. It allows connection of other USB devices, increasing the flexibility of the motherboard's devices.
[0063] The storage module is located on motherboard A and is connected to processor 101. The storage module includes a FLASH module 115, which is an onboard chip and can use a 1GB NOR FLASH chip. The storage module may also include a SATA interface module 116, which is a hard drive expansion interface for connecting external storage devices (such as external hard drives), supporting external 4TB SSDs.
[0064] See also Figure 3The aircraft front and rear cabin coordination device provided in this application separates the main board A and the backplane B. Specifically, the interfaces and devices corresponding to analog signals are located on the main board A, while the interfaces and devices corresponding to digital signals are located on the backplane B. This avoids interference between analog and digital signals and ensures signal integrity. The connection between the two is achieved through high-speed ribbon cables and shielded ribbon cables (the connection of the components can be found in the description of the above embodiments). The signals from the cellular communication module and the positioning module are led out through the first antenna panel and the second antenna template, thus constituting the aircraft front and rear cabin coordination device provided in this application.
[0065] The aircraft front and rear cabin coordination equipment provided by the above embodiments can not only ensure the integrity and reliability of data transmission, but also reduce the size of the equipment and save onboard space.
[0066] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, all of which fall within the scope of protection of this application.
Claims
1. A collaborative device for the front and rear cabins of an aircraft, characterized in that, include: The motherboard has a processor, an enable circuit, and multiple motherboard switching modules. The multiple motherboard switching modules are connected in series to form a chain structure. The motherboard switching module at the beginning of the chain structure is connected to the processor, and the motherboard switching module at the end of the chain structure is connected to the enable circuit. A backplane is provided with a ribbon cable connector and a first interface board connector connected to the ribbon cable connector. The ribbon cable connector is also connected to the plurality of motherboard switching modules. A backplane switching module is also provided on the backplane, and the backplane switching module is connected to the enable circuit. An interface board is provided with a second interface board connector, which is connected to the first interface board connector and also connected to the backplane switching module.
2. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: An FPGA module is mounted on the motherboard and is connected to the processor. The shielded cable and multiple protocol interfaces are disposed on the backplane. The shielded cable is connected to the multiple protocol interfaces and is also connected to the FPGA module. The low-speed data interface is located on the interface board and is connected to the multiple protocol interfaces.
3. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, The external connection interface of the motherboard switching module located at the end of the chain structure is suspended.
4. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: Multiple debugging modules are installed on the motherboard, including a whole-machine debugging module and a single-board debugging module; The complete machine debugging module includes at least two modules, one of which is connected to the motherboard switching module located at the first end of the chain structure, and the other is connected to the backplane switching module located on the backplane. The single-board debugging module includes multiple modules, and each of the multiple single-board debugging modules is connected to one of the remaining motherboard switching modules in the chain structure; wherein, the remaining motherboard switching modules are the remaining motherboard switching modules in the chain structure excluding the motherboard switching module at the first end.
5. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: A first set of USB ports is provided on the motherboard and is connected to the processor. The first set of USB ports includes multiple USB ports, which are respectively connected to multiple cellular communication modules. The multiple cellular communication modules are connected to a first multi-interface antenna panel. The multiple cellular communication modules use different communication frequency bands.
6. The aircraft front and rear cabin coordination equipment according to claim 5, characterized in that, Also includes: The SIM interface is located on the motherboard, and each cellular communication module connects to multiple SIM interfaces.
7. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: A second set of USB interfaces is provided on the motherboard and is connected to the processor. The second set of USB interfaces includes multiple USB interfaces, which are respectively connected to multiple positioning modules. The multiple positioning modules are connected to a second multi-interface antenna panel. The multiple positioning modules are of different types.
8. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: A third set of USB ports is provided on the motherboard, which is connected to the processor. The third set of USB ports includes one or more USB ports, which are left floating to serve as external USB ports reserved on the motherboard.
9. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, Also includes: The storage module is located on the motherboard and is connected to the processor. The storage module includes a FLASH module connected to the processor; and / or The storage module includes a SATA interface module connected to the processor, and the SATA interface module is used to connect external storage devices.
10. The aircraft front and rear cabin coordination equipment according to claim 1, characterized in that, The motherboard and the backplate are connected by a T-type plug-in method.