Cabin communication system and vehicle

Abstract

The embodiment of the utility model provides a cockpit communication system and a vehicle, the cockpit communication system comprises a first host and a second host, the first host and the second host are in communication connection, and the first host and the second host are configured to mutually transmit multimedia signals through a time sensitive network. According to the embodiment of the utility model, the first host and the second host are connected through the time-sensitive network, and audio signals and video signals can be transmitted through a communication mode, so that on one hand, the design of internal circuits of the first host and the second host can be simplified, and the PCB area occupied by communication connection of the first host and the second host is reduced; the hardware cost is reduced; and on the other hand, the time-sensitive network is used for replacing A2B and Ethernet, so that the number of connecting wires between the first host and the second host is small, the EMC risk of the vehicle is reduced, and the reliability of the cabin communication system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of communication, and in particular to a cockpit communication system and a vehicle. Background Art

[0002] There are usually multiple multimedia hosts in the cockpit to drive more screens and other peripherals to meet the user's demand for multimedia audio-visual and entertainment experience in the cockpit. High-speed communication links are usually required between multiple multimedia hosts to achieve the transmission of control signals, audio signals, video signals, etc.

[0003] In current technology, different hosts are connected via CAN interfaces, Ethernet interfaces, and A2B interfaces, which requires setting up many communication lines and has a relatively complex structure. Utility Model Content

[0004] The embodiments of the utility model provide a cockpit communication system and a vehicle to solve the problem in the related art that many communication lines need to be set up between different hosts and the structure is relatively complex.

[0005] In order to solve the above technical problems, the utility model is achieved as follows:

[0006] In a first aspect, an embodiment of the utility model provides a cockpit communication system, which includes a first host and a second host, wherein the first host and the second host are communicatively connected and configured to transmit multimedia signals to each other through a time-sensitive network.

[0007] Optionally, the time-sensitive network includes a time-sensitive protocol and / or a time synchronization protocol, the time-sensitive protocol is used to enable the multimedia signal to be transmitted in priority to other signals, and the time synchronization protocol is used to achieve synchronous communication between the first host and the second host.

[0008] Optionally, the time-sensitive protocol includes the AVB protocol, and the time synchronization protocol includes any one of the 802.1AS protocol and the IEEE1588 protocol.

[0009] Optionally, the first host and the second host are connected via a first cable, and the first cable can support transmission of the multimedia signal.

[0010] Optionally, the first host is provided with a first interface, the second host is provided with a second interface, the first end of the first cable is connected to the first interface, and the second end of the first cable is connected to the second interface.

[0011] Optionally, a first chip is provided in the first host, the first chip can support time-sensitive network communication, and the first chip is connected to the first interface.

[0012] Optionally, a second chip is provided in the second host, the second chip can support time-sensitive network communication, and the second chip is connected to the second interface.

[0013] Optionally, the first interface and / or the second interface includes any one of a RMII interface, a MII interface, a RGMII interface, a SGMII interface, and a PCIE interface.

[0014] Optionally, a CAN bus, a first end of the CAN bus is connected to the first host, and a second end of the CAN bus is connected to the second host, so that control signals are transmitted between the first host and the second host based on the CAN communication protocol.

[0015] In a second aspect, an embodiment of the present utility model further proposes a vehicle, comprising a cockpit communication system as described in any one of the first aspects above.

[0016] The cockpit multimedia communication system includes a first host and a second host, wherein the first host and the second host are connected through a time-sensitive network communication, so that the first host and the second host can transmit video signals and audio signals to each other based on the time-sensitive network protocol. That is, in the embodiment of the utility model, the first host and the second host are connected through a time-sensitive network, and the audio signal and the video signal can be transmitted based on the time-sensitive network protocol. The time-sensitive network replaces the A2B and the non-time-sensitive Ethernet in the related technology, and the audio signal and the video signal can be transmitted through a communication method, so that the A2B interface on the first host and the second host, and the A2B harness for realizing the A2B connection between the first host and the second host can be cancelled. On the one hand, the design of the internal circuit of the first host and the second host can be simplified, and the PCB area occupied by the communication connection of the first host and the second host can be reduced, and the hardware cost can be reduced; on the other hand, since the time-sensitive network replaces the A2B and Ethernet, the connection wires between the first host and the second host can be reduced, so that the layout requirements of the first host and the second host in the vehicle are reduced, and the EMC risk of the vehicle is reduced, and the reliability of the cockpit communication system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram showing a cockpit communication system provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram showing a first host provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram showing a second host provided by an embodiment of the utility model.

[0020] Reference numerals:

[0021] 100: cockpit communication system; 10: first host; 20: second host; 11: first interface; 21: second interface; 30: first cable; 40: CAN bus; 12: first chip; 13: first system chip; 22: second chip; 23: second system chip; 14: first video input interface; 15: first video output interface; 16: first audio input interface; 17: first audio output interface; 24: second video input interface; 25: second video output interface; 18: third interface; 26: fourth interface. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0024] like Figures 1 to 3 As shown, the cockpit communication system 100 includes a first host 10 and a second host 20. The first host 10 and the second host 20 are communicatively connected and are configured to transmit multimedia signals to each other through a time-sensitive network.

[0025] The cockpit communication system 100 includes a first host 10 and a second host 20, wherein the first host 10 and the second host 20 are communicatively connected and configured to transmit multimedia signals through a time-sensitive network, so that the first host 10 and the second host 20 can exchange multimedia signals with each other based on a time-sensitive network protocol. Further, the multimedia signals can include video signals and audio signals. That is, in the embodiment of the utility model, the first host 10 and the second host 20 transmit multimedia signals through a time-sensitive network, and audio signals and video signals can be transmitted based on the time-sensitive network protocol. The time-sensitive network replaces the A2B and non-time-sensitive Ethernet in the related technology, and the audio signal and the video signal can be transmitted through a communication method, so that the A2B interface on the first host 10 and the second host 20, and the A2B harness for realizing the A2B connection between the first host 10 and the second host 20 can be cancelled. On the one hand, the design of the internal circuits of the first host 10 and the second host 20 can be simplified, and the PCB area occupied by the communication connection between the first host 10 and the second host 20 can be reduced, thereby reducing the hardware cost. On the other hand, since the time-sensitive network replaces A2B and Ethernet, the connection wires between the first host 10 and the second host 20 can be reduced, so that the layout requirements of the first host 10 and the second host 20 in the vehicle are reduced, and the EMC risk of the vehicle is reduced, thereby improving the reliability of the cockpit communication system 100.

[0026] It should be noted that the embodiment of the utility model cancels the A2B interface on the first host 10 and the second host 20, and the A2B harness for realizing the A2B connection between the first host 10 and the second host 20, that is, the A2B connection between the first host 10 and the second host 20 is canceled. Therefore, the original A2B chip in the first host 10 and the second host 20 can also be cancelled, which can further reduce the hardware cost of the first host 10 and the second host 20.

[0027] It should also be noted that the time-sensitive network (TSN) can include a time-sensitive protocol, and the time-sensitive network can also include a time synchronization protocol, and the time-sensitive network can also include a time-sensitive protocol and a time synchronization protocol, and this embodiment does not impose any restrictions on this. In the embodiment of the utility model, the setting of the time-sensitive protocol is used to realize the transmission of video signals and audio signals in priority to other signals, that is, by setting the time-sensitive protocol, the transmission priority of the video signal and the audio signal can be improved. It can be understood that in practical applications, the priority transmission of the video signal and the audio signal has the beneficial effects of reducing transmission loss, improving transmission efficiency, and low delay. The setting of the time synchronization protocol is used to realize synchronous communication between the first host 10 and the second host 20, which has the beneficial effect of maintaining high-precision time synchronization between the interconnected first host 10 and the second host 20, thereby realizing the synchronization of video and audio, and improving the user experience.

[0028] Furthermore, time-sensitive networking is a set of IEEE 802.1 protocol standards, including: IEEE 802.1AS-Rev, IEEE 802.1Qva, IEEE 802.1Qch, IEEE 802.1Qbv, IEEE 802.1Qbu, IEEE 802.1CB, IEEE802.1Qca and other protocols. Compared with traditional non-time Ethernet, it adds precise time synchronization, traffic priority control, loan reservation and other capabilities to ensure real-time, deterministic and reliable data transmission. Time-sensitive network Ethernet uses a time synchronization algorithm to synchronize the first host 10 and the second host 20, which can improve the synchronization accuracy of video signal and audio signal playback; time-sensitive network Ethernet also reduces the delay in the transmission of audio signals and video signals through bandwidth reservation, traffic priority, traffic scheduling and other protocol controls, so that the user experience is improved.

[0029] That is, the video signal and audio signal between the first host 10 and the second host 20 are transmitted through the time-sensitive network. The time synchronization function of the time-sensitive network can make the synchronization accuracy of the video signal and audio signal between the first host 10 and the second host 20 reach the millisecond level, greatly improving the problem of asynchronous images and sounds of different hosts. In addition, the time-sensitive network can also realize the priority transmission of video signals, reduce the delay of video transmission between the first host 10 and the second host 20, and improve the stability of video signal transmission.

[0030] In addition, in the embodiment of the utility model, the cockpit may have a central control host and a slave host, wherein the first host 10 may be the central control host, the second host 20 may be the slave host, and the number of the second host 20 is not limited to one. Alternatively, the first host 10 may be the slave host, and the second host 20 may be the central control host.

[0031] In addition, in some embodiments, the time sensitive protocol includes the AVB protocol, and the time synchronization protocol includes any one of the 802.1AS protocol and the IEEE1588 protocol.

[0032] Among them, the AVB (Audio Video Bridging) protocol is an Ethernet audio and video bridging technology, which is a new IEEE802 standard. Based on the traditional Ethernet network, it supports various network multimedia applications based on audio and video by ensuring bandwidth, limiting latency and precise clock synchronization. AVB focuses on enhancing the real-time audio and video performance of traditional Ethernet while maintaining 100% backward compatibility with traditional Ethernet. In addition, the 802.1AS protocol Generalized Precision Time Protocol will achieve precise time measurement for the fields of automobiles, industrial automation control, etc. The IEEE1588 protocol is a general specification for improving the timing synchronization capability of network systems. During the drafting process, it was mainly compiled with reference to Ethernet, so that distributed communication networks can have strict timing synchronization and be applied to industrial automation systems. The basic concept is to synchronize the internal clock of the network device (client) with the main clock of the host computer through hardware and software, providing an application with a synchronization establishment time of less than 10μs. Compared with the Ethernet delay time of 1,000μs that does not implement the IEEE1588 protocol, the timing synchronization indicators of the entire network are significantly improved.

[0033] In addition, in some embodiments, Figure 1 As shown, the cockpit communication system 100 may also include a first cable 30, the first host 10 has a first interface 11, the second host 20 has a second interface 21, the first interface 11 and the second interface 21 both support the time-sensitive network protocol, one end of the first cable 30 is connected to the first interface 11, and the other end of the first cable 30 is connected to the second interface 30, wherein the first cable 30 can support the transmission of multimedia signals.

[0034] The cockpit communication system 100 further includes a first cable 30, and the first host 10 and the second host 20 can be connected through the first cable 30 to realize the connection between the first host 10 and the second host 20 based on the time-sensitive network protocol, and then realize the transmission of multimedia signals between the first host 10 and the second host 20 through the first cable 30. Specifically, the first host 10 can have a first interface 11, and the second host 20 can have a second interface 21. The first interface 11 and the second interface 21 are connected through the first cable 30, so that the first host 10 and the second host 20 can be connected.

[0035] Among them, the first interface 11 and the second interface 21 can be bidirectional interfaces, which can perform input and output, so that for the first host 10, input and output can be performed through the first interface 11, and for the second host 20, input and output can be performed through the second interface 21, which can reduce the number of interfaces and the number of wires. Of course, the first host 10 and the second host 20 can also be connected through a unidirectional interface. For example, the first host 10 is provided with a first input interface and a first output interface, and the second host 20 is provided with a second input interface and a second output interface. The first input interface is connected to the second output interface, and the first output interface is connected to the second input interface. The specific connection method of the first host 10 and the second host 20 is not specifically limited in the embodiment of the utility model.

[0036] It should be noted that in order to enable a normal time-sensitive network connection between the first host 10 and the second host 20, the first interface 11 and the second interface 21 can both be interfaces that support the time-sensitive network protocol, and the multimedia signal can be transmitted between the first host 10 and the second host 20 through the first cable 30.

[0037] It should also be noted that since Ethernet is used in the related art to connect the first host 10 and the second host 20, and the Ethernet interface generally also supports the time-sensitive network protocol, when using the cockpit communication system 100 provided by the embodiment of the utility model, the first host 10 and the second host 20 can directly use the previous Ethernet connection interface for communication connection, which can reduce the changes to the first host 10 and the second host 20 and facilitate the improvement of the existing cockpit communication system 100.

[0038] In addition, in some embodiments, Figure 2 As shown, the first host 10 may be provided with a first chip 12 and a first system chip 13, the first chip 12 is connected to the first system chip 13, and the first chip 12 is connected to the first interface 11, wherein the first chip 12 can support time-sensitive network communication.

[0039] The first host 10 is provided with a first chip 12 and a first system chip 13, and the first chip 12 is connected to the first system chip 13, so the first chip 12 and the first system chip 13 can also communicate with each other. Among them, the first interface 11 is connected to the first chip 12, so the first host 10 can receive the video signal, audio signal, etc. transmitted by the second host 20 through the first interface 11, and the first chip 12 and the first system chip 13 are also connected, so the first chip 12 and the first system chip 13 can also transmit signals, and the first system chip 13 can receive the video signal, audio signal, etc. received by the first chip 12, and process the video signal, audio signal, etc. to meet the user's usage requirements.

[0040] It should be noted that the first chip 12 may have a first connection interface and a second connection interface, the first system chip 13 may have a third connection interface, the first connection interface may be connected to the first interface 11, and the second connection interface may be connected to the third connection interface. In the specific connection, a first connector and a second connector may be provided, a connection line may be drawn from the first connection interface of the first chip 12 and connected to the first connector, and then the first connector may be connected to the first interface 11 to realize the connection between the first chip 12 and the first interface 11; connection lines may be drawn from the second connection interface and the third connection interface respectively and connected to the second connector to realize the connection between the first chip 12 and the first system chip 13.

[0041] In addition, in some embodiments, the first chip 12 and the first system chip 13 may be integrated.

[0042] In the embodiment of the utility model, the first chip 12 and the first system chip 13 are integrated, that is, the first chip 12 can be integrated on the first system chip 13. On the one hand, the signal transmission distance between the first chip 12 and the first system chip 13 can be reduced, and the power consumption can be reduced; on the other hand, the integrated first chip 12 and the first system chip 13 are also smaller in size, which can simplify the internal design and layout of the first host 10.

[0043] In addition, in some embodiments, Figure 3 As shown, the second host 20 may be provided with a second chip 22 and a second system chip 23, the second chip 22 is connected to the second system chip 23, and the second chip 22 is provided with a second interface 21, wherein the second chip can support sensitive network communication.

[0044] The second host 20 is provided with a second chip 22 and a second system chip 23, and the second chip 22 is connected to the second system chip 23, so the second chip 22 and the second system chip 23 can also communicate with each other. Among them, the second interface 21 is connected to the second chip 22, so the second host 20 can receive the video signal, audio signal, etc. transmitted by the second host 20 through the second interface 21, and the second chip 22 and the second system chip 23 are also connected, so the second chip 22 and the second system chip 23 can also transmit signals, and the second system chip 23 can receive the video signal, audio signal, etc. received by the second chip 22, and process the video signal, audio signal, etc. to meet the user's usage requirements.

[0045] It should be noted that the second chip 22 may have a fourth connection interface and a fifth connection interface, the second system chip 23 may have a sixth connection interface, the fourth connection interface may be connected to the second interface 21, and the fifth connection interface may be connected to the sixth connection interface. In the specific connection, a third connector and a fourth connector may be provided, a connection line may be drawn from the fourth connection interface of the second chip 22 and connected to the third connector, and then the third connector may be connected to the second interface 21 to achieve the connection between the second chip 22 and the second interface 21; connection lines may be drawn from the fifth connection interface and the sixth connection interface and connected to the fourth connector to achieve the connection between the second chip 22 and the second system chip 23.

[0046] In addition, in some embodiments, the second chip 22 and the second system chip 23 may be integrated.

[0047] In the embodiment of the utility model, the second chip 22 and the second system chip 23 are integrated, that is, the second chip 22 can be integrated on the second system chip 23. On the one hand, the signal transmission distance between the second chip 22 and the second system chip 23 can be reduced, and the power consumption can be reduced; on the other hand, the integrated second chip 22 and the second system chip 23 are also smaller in size, which can simplify the design and layout inside the second host 20.

[0048] It should be noted that the first system chip 13 and the second system chip 23 are system-on-chips (System onChip, SOC), which may include the following main functions of some chips or modules in the SoC: central processing unit (CPU), graphics processing unit (GPU); image signal processing unit (Internet Service Provider, ISP); digital signal processor (Digital SignalProcessing, DSP), neural processing unit (Neural network Processing Unit, NPU); video codec, IO interface, clock, etc.

[0049] In addition, in some embodiments, the first interface 11 and / or the second interface 12 includes any one of an RMII interface, an MII interface, an RGMII interface, an SGMII interface, and a PCIE interface. Specifically, MII is a media independent interface, also called a media independent interface. It is an Ethernet industry standard defined by IEEE-802.3. It includes a data interface and a management interface between a MAC and a PHY. The data interface includes two independent channels for a transmitter and a receiver, respectively. Each channel has its own data, clock, and control signals. The MII data interface requires a total of 16 signals. The management interface is a dual-signal interface: one is a clock signal and the other is a data signal. The RMII (Reduced Media Independent Interface) interface, the simplified media independent interface is another implementation interface in the IEEE 802.3u standard in addition to the MII interface. The RMII interface has less I / O transmission than the MII interface. In terms of data transmission and reception, it has half the signal lines compared to the MII interface. RMII generally does not arrange two clocks for receiving and sending for each port, but all data ports share one clock for sending and receiving for all ports, which saves a lot of ports. One port of RMII requires 7 data lines, which is half less than MII, so the switch can access ports with twice as much data. RGMII (Reduced Gigabit Media Independent Interface) is an interface for connecting gigabit MAC and PHY. It is a reduced speed version relative to GTM (Gigabit Media Independent Interface), mainly to reduce the complexity and cost of the physical layer interface, making it suitable for low-cost applications. SGMII (Sedes Gigabit Media Independent Interface) is an interface standard for physical layer communication, which defines the signal definition and communication protocol between the Ethernet MAC (Media Access Control) layer and the PHY (Physical Layer) layer. Four different differential signals are used to transmit data and control signals. PCIE is the abbreviation of PCI Express, which is a type of PCI computer bus. It uses the existing PCI programming concepts and communication standards, but is based on a faster serial communication system.

[0050] The first interface 11 and the second interface 12 may be the same or different. For example, the first interface 11 may be an RMII interface, and the second interface 12 may also be an RMII interface, or an MII interface, or an RGMII interface, or an SGMII interface, which is not limited in this embodiment.

[0051] In addition, the second connection interface, the third connection interface, the fifth connection interface, and the sixth connection interface can be any one of the RMII interface, the MII interface, the RGMII interface, the SGMII interface, and the PCIE interface, or can also be other interfaces that support time-sensitive networks. The specific types of the second connection interface and the third connection interface are not specifically limited in the embodiments of the utility model.

[0052] In addition, in some embodiments, Figure 2 As shown, the first host 10 may further include a first video input interface 14 and a first video output interface 15. The first video input interface 14 is used to connect to a video input device to receive a video signal, and the first video output interface 15 is used to connect to a display device to send a video signal to the display device.

[0053] The first host 10 also includes a first video input interface 14 and a first video output interface 15, wherein the first video input interface 14 is used to connect to a video input device and can receive a video signal sent by the video input device; the first video output interface 15 is used to connect to a display device, and the first host 10 can send the video signal to the display device for display.

[0054] In addition, in some embodiments, Figure 2 As shown, the first host 10 may further include a first audio input interface 16 and a first audio output interface 17. The first audio input interface 16 is used to connect to an audio input device to receive an audio signal, and the first audio output interface 17 is used to connect to an audio output device to send an audio signal to the audio output device.

[0055] The first host 10 includes a first audio input interface 16 and a first audio output interface 17, wherein the first audio input interface 16 is used to connect to an audio input device and can receive an audio signal sent by the audio input device; the first audio output interface 17 is used to connect to an audio output device, and the first host 10 can send the audio signal to the audio output device through the first audio output interface 17 for playback.

[0056] It should be noted that the first video input interface 14, the first video output interface 15, the first audio input interface 16, and the first audio output interface 17 can all be connected to the first system chip 13. The first system chip 13 can receive audio signals or video signals and process the audio signals or video signals. The first system chip 13 can also send audio signals to the audio output device through the first audio output interface 17 for playback, and send video signals to the display device through the first video output interface 15 for display.

[0057] In addition, in some embodiments, Figure 3 As shown, the second host 20 may also include a second video input interface 24 and a second video output interface 25. The second video input interface 24 is used to connect to a video input device to receive an audio signal, and the second video output interface 25 is used to connect to a display device to send a video signal to the display device.

[0058] The second host 20 also includes a second video input interface 24 and a second video output interface 25, wherein the second video input interface 24 is used to connect to a video input device and can receive a video signal sent by the video input device; the second video output interface 25 is used to connect to a display device, and the second host 20 can send the video signal to the display device for display.

[0059] It should be noted that the second video input interface 24 and the second video output interface 25 can both be connected to the second system chip 23. The second system chip 23 can receive and process video signals. The second system chip 23 can also send the video signals to the display device through the second video output interface 25 for display.

[0060] It should also be noted that the first video input interface 14, the first video output interface 15, the first audio input interface 16, the first audio output interface 17, the second video input interface 24, and the second video output interface 25 may have one or more and may be connected to different devices.

[0061] Among them, the first video input interface 14, the first video output interface 15, the second video input interface 24, and the second video output interface 25 can be any one of the mipi interface, DP interface, LVDS interface, and GMSL interface, or can also be other interfaces that can transmit video signals. The specific types of the first video input interface 14, the first video output interface 15, the second video input interface 24, and the second video output interface 25 are not specifically limited in the embodiment of the utility model. The first video input interface 14 and the second video input interface 24 can be connected to a camera, a driving recorder, etc., and the first video output interface 15 and the second video output interface 25 can be connected to a display screen, etc. The first audio input interface 16 can be a digital interface, an analog interface, or an optical interface, which is used to connect to components such as a digital microphone, an analog microphone, and an AUX; the first audio output interface 17 can be a digital interface, an analog interface, or an optical interface, which is used to connect to a speaker, a sound, an audio amplifier, etc.

[0062] In the embodiment of the utility model, the first host 10 has a first audio input interface 16 and a first audio output interface 17, so that the first host 10 has a sound output function, and the second host 20 does not have a sound output function. When the second host 20 needs to make a sound, the second host 20 can send the audio signal to the first host 10 through the time-sensitive network, and the first host 10 processes it, and then sends the audio signal to the audio output device through the first audio output interface 17, and the audio output device makes a sound.

[0063] In addition, in some embodiments, the cockpit communication system 100 may further include a CAN bus 40, a first end of the CAN bus 40 is connected to the first host 10, and a second end of the CAN bus 40 is connected to the second host 20, so that the first host 10 and the second host 20 transmit control signals based on the CAN communication protocol. In addition, the first host 10 may also have a third interface 18, and the second host 20 may also be provided with a fourth interface 26, one end of the CAN bus 40 is connected to the third interface 18, and the other end of the CAN bus 40 is connected to the fourth interface 26, and the first host 10 and the second host 20 transmit control signals based on the CAN communication protocol.

[0064] The cockpit communication system 100 also includes a CAN bus 40. The first host 10 also has a third interface 18, and the second host 20 is also provided with a fourth interface 26. The third interface 18 and the fourth interface 26 can be connected via the CAN bus 40, so that the first host 10 and the second host 20 can be communicated based on the CAN communication protocol, so that the first host 10 and the second host 20 can transmit control signals based on the CAN bus 40.

[0065] That is, the present application may additionally set up a CAN bus 40 for transmission of control signals. Of course, the CAN bus 40 may not be additionally set up, and the first host 10 and the second host 20 may transmit control signals through a time-sensitive network.

[0066] It should be noted that control signals can be transmitted between the first host 10 and the second host 20. After one of the first host 10 and the second host 20 receives the control signal, the other can send a feedback signal, and the feedback signal can also be transmitted through the CAN bus 40.

[0067] The cockpit communication system 100 includes a first host 10 and a second host 20, wherein the first host 10 and the second host 20 are connected via a time-sensitive network communication, so that the first host 10 and the second host 20 can transmit video signals and audio signals to each other based on the time-sensitive network protocol. That is, in the embodiment of the utility model, the first host 10 and the second host 20 are connected through a time-sensitive network, and audio signals and video signals can be transmitted based on the time-sensitive network protocol. The time-sensitive network replaces the A2B and non-time-sensitive Ethernet in the related technology, and the audio signal and the video signal can be transmitted through a communication method, so that the A2B interface on the first host 10 and the second host 20, and the A2B harness for realizing the A2B connection between the first host 10 and the second host 20 can be cancelled. On the one hand, the design of the internal circuits of the first host 10 and the second host 20 can be simplified, and the PCB area occupied by the communication connection between the first host 10 and the second host 20 can be reduced, thereby reducing the hardware cost. On the other hand, since the time-sensitive network replaces A2B and Ethernet, the connection wires between the first host 10 and the second host 20 can be reduced, so that the layout requirements of the first host 10 and the second host 20 in the vehicle are reduced, and the EMC risk of the vehicle is reduced, thereby improving the reliability of the cockpit communication system 100.

[0068] In addition, an embodiment of the present utility model further provides a vehicle, which includes the cockpit communication system 100 in any one of the above embodiments.

[0069] In an embodiment of the utility model, the above-mentioned cockpit communication system 100 is arranged in a vehicle, wherein the first host 10 and the second host 20 are connected through a time-sensitive network, and audio signals and video signals can be transmitted based on a time-sensitive protocol and / or a time synchronization protocol, that is, both audio signals and video signals can be transmitted through a communication method, so that the A2B interface on the first host 10 and the second host 20, as well as the A2B wiring harness for realizing the A2B connection between the first host 10 and the second host 20 can be cancelled. On the one hand, the design of the internal circuits of the first host 10 and the second host 20 can be simplified, and the hardware cost can be reduced; on the other hand, the connecting wires between the first host 10 and the second host 20 can be reduced, which is convenient for the arrangement of the first host 10 and the second host 20 in the vehicle, and can also reduce the EMC risk of the vehicle and improve the reliability of the cockpit communication system 100.

[0070] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] Although the optional embodiments of the utility model embodiments have been described, those skilled in the art, once knowing the basic creative concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments and all changes and modifications falling within the scope of the utility model embodiments.

[0072] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0073] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A cockpit communication system, characterized in that: The system comprises a first host and a second host, wherein the first host and the second host are communicatively connected and configured to transmit multimedia signals to each other via a time-sensitive network.

2. The cockpit communication system according to claim 1, characterized in that: The time-sensitive network includes a time-sensitive protocol and / or a time synchronization protocol. The time-sensitive protocol is used to realize that the multimedia signal is transmitted in priority to other signals. The time synchronization protocol is used to realize synchronous communication between the first host and the second host.

3. The cockpit communication system according to claim 2, characterized in that: The time sensitive protocol includes the AVB protocol, and the time synchronization protocol includes any one of the 802.1AS protocol and the IEEE1588 protocol.

4. The cockpit communication system according to claim 1, characterized in that: The first host and the second host are connected via a first cable, and the first cable can support transmission of the multimedia signal.

5. The cockpit communication system according to claim 4, characterized in that: The first host is provided with a first interface, the second host is provided with a second interface, the first end of the first cable is connected to the first interface, and the second end of the first cable is connected to the second interface.

6. The cockpit communication system according to claim 5, characterized in that: The first host is provided with a first chip, the first chip can support the time-sensitive network, and the first chip is connected to the first interface.

7. The cockpit communication system according to claim 5, characterized in that: The second host is provided with a second chip, the second chip can support the time-sensitive network, and the second chip is connected to the second interface.

8. The cockpit communication system according to claim 5, characterized in that: The first interface and / or the second interface includes any one of an RMII interface, an MII interface, an RGMII interface, an SGMII interface, and a PCIE interface.

9. The cockpit communication system according to claim 1, characterized in that: Also includes: A CAN bus, wherein a first end of the CAN bus is connected to the first host, and a second end of the CAN bus is connected to the second host, so that a control signal is transmitted between the first host and the second host based on the CAN communication protocol.

10. A vehicle, characterized in that: The vehicle comprises the cockpit communication system according to any one of claims 1-9.

Images