Vehicle-mounted optical fiber communication system and method and vehicle

Abstract

The invention provides a vehicle-mounted optical fiber communication system and method and a vehicle. The vehicle-mounted optical fiber communication system comprises a main controller, a regional gateway, terminal equipment, a backbone network and an access network, the backbone network and the access network carry out signal transmission based on optical fibers; the backbone network comprises a control signal transmission channel and a data signal transmission channel; the main controller is used for sending an optical control signal to the regional gateway through the control signal transmission channel and sending a first optical data signal to the regional gateway through the data signal transmission channel; and the regional gateway is used for receiving the optical control signal and the first optical data signal, receiving a second optical data signal sent by the terminal equipment through the access network, and sending the second optical data signal to the main controller through the data signal transmission channel. Therefore, high-speed data communication between the slave master controller and the terminal equipment is realized, the data communication rate of the vehicle is improved, and actual use requirements can be met.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted communication technology, and in particular to a vehicle-mounted optical fiber communication system, method, and vehicle. Background Art

[0002] With the continuous development of technologies such as intelligent vehicle networking, autonomous driving, and high-definition video transmission, the number of in-vehicle electronic systems and the amount of in-vehicle transmission data are growing rapidly. This places higher demands on the data signal transmission rate of in-vehicle communication systems.

[0003] In related technologies, traditional in-vehicle Ethernet buses use copper cables as the transmission medium, with a maximum transmission rate of no more than 1 Gigabit per second (1Gbps), which cannot meet the high transmission rate requirements of vehicles. In addition, although some vehicles use fiber-optic communication, their in-vehicle network architecture still relies heavily on traditional Controller Area Network (CAN) and Local Interconnect Network (LIN) protocols for low-speed communication. This results in low data signal transmission rates at access points such as sensors, which cannot meet actual usage requirements. Summary of the Invention

[0004] The present application provides an on-vehicle optical fiber communication system, method, and vehicle, which can improve the data signal transmission rate of the vehicle access terminal to meet actual usage requirements.

[0005] In a first aspect, an embodiment of the present application provides an on-vehicle optical fiber communication system, comprising a main controller, a regional gateway, a terminal device, a backbone network, and an access network; the backbone network and the access network perform signal transmission based on optical fibers; the backbone network includes a control signal transmission channel and a data signal transmission channel;

[0006] The main controller is configured to send an optical control signal to the regional gateway through the control signal transmission channel, and send a first optical data signal to the regional gateway through the data signal transmission channel;

[0007] The regional gateway is configured to receive the optical control signal and the first optical data signal, receive the second optical data signal sent by the terminal device through the access network, and send the second optical data signal to the main controller through the data signal transmission channel.

[0008] In a possible implementation, the access network is a tree-like optical splitting structure; the first optical data signal is broadcast from the regional gateway to each terminal device through the tree-like optical splitting structure; the terminal device selectively decodes the first optical data signal;

[0009] The second optical data signal sent by the terminal device is sent to the regional gateway through the tree-like optical splitting structure, and is sent to the main controller through the backbone network.

[0010] In a possible implementation manner, the first optical data signal and the second optical data signal are transmitted in the access network using different optical fiber links.

[0011] In a possible implementation, the main controller includes a first optical transceiver module; the first optical transceiver module is used to integrate optical signals of multiple different wavelength bands into the same optical fiber for transmission.

[0012] In a possible implementation, the main controller further includes a data signal transmitting module and a data signal receiving module; the first optical transceiver module includes a first wave splitter and a first wave combiner;

[0013] The first optical data signal sent by the data signal transmitting module enters the data signal transmission channel through the first combiner; the second optical data signal in the data signal transmission channel enters the data signal receiving module through the first splitter.

[0014] In a possible implementation, the terminal device includes a second optical transceiver module; the second optical transceiver module is used to integrate optical signals of multiple different wavelength bands into the same optical fiber for transmission.

[0015] In a possible implementation, the terminal device further includes a transmitting module and a receiving module; the second optical transceiver module includes a second splitter and a second combiner;

[0016] The second optical data signal sent by the transmitting module enters the access network through the second combiner; the first optical data signal sent by the regional gateway enters the receiving module through the second splitter.

[0017] In one possible implementation, the regional gateway includes an optical switch;

[0018] The regional gateway is used to receive and analyze part of the optical control signal to switch the optical switch state; the optical switch state includes a through mode and a switching mode;

[0019] In the pass-through mode, the first optical data signal sent by the main controller passes directly through the regional gateway and is not transmitted to the terminal device corresponding to the regional gateway;

[0020] In the switching mode, the first optical data signal passes through the regional gateway and is transmitted to the terminal device corresponding to the regional gateway; the second optical data signal sent by the terminal device passes through the regional gateway and enters the backbone network.

[0021] In a possible implementation manner, the optical control signal is sent out one time segment earlier than the first optical data signal.

[0022] In a possible implementation manner, in the exchange mode, the first optical data signal and the second optical data signal are transmitted in the same time segment.

[0023] In a possible implementation manner, the partial optical control signal includes a first control signal and a second control signal;

[0024] When the regional gateway receives the second control signal, the optical switch state is switched from the direct mode to the switching mode within a time segment corresponding to the second control signal.

[0025] In one possible implementation, the optical switch includes two input ports and two output ports; the type of the optical switch includes an adjustable multimode interferometer or an adjustable directional coupler; the tuning method of the optical switch includes a thermo-optic switch, a micro-electromechanical system optical switch, or an electro-optical switch.

[0026] In a possible implementation, the optical fiber includes at least one of a multimode glass optical fiber, a single-mode glass optical fiber, a plastic optical fiber, and a hollow-core optical fiber.

[0027] In a second aspect, an embodiment of the present application provides another vehicle-mounted optical fiber communication system, including a main controller, a regional gateway, a terminal device, a backbone network, and an access network; the backbone network and the access network perform signal transmission based on optical fiber; the backbone network includes a main control signal transmission channel and a main data signal transmission channel, and also includes a control signal transmission backup channel and / or a data signal transmission backup channel;

[0028] The main controller is configured to send an optical control signal to the regional gateway through the control signal transmission main channel, and send a first optical data signal to the regional gateway through the data signal transmission main channel;

[0029] The regional gateway is configured to receive the optical control signal and the first optical data signal, receive a second optical data signal sent by the terminal device through the access network, and send the second optical data signal to the main controller through the backbone network;

[0030] In the event that a fault occurs in the main control signal transmission channel, the optical control signal is transmitted through the control signal transmission backup channel; and / or in the event that a fault occurs in the main data signal transmission channel, the first optical data signal and the second optical data signal are transmitted through the data signal transmission backup channel.

[0031] In one possible implementation, the main controller includes a data signal transmitting module, a data signal transmitting backup module, a data signal receiving module, a data signal receiving backup module, a first optical transceiver module, and a third optical transceiver module; the first optical transceiver module includes a first splitter and a first combiner; the third optical transceiver module includes a third splitter and a third combiner;

[0032] The first optical data signal sent by the data signal transmission module enters the data signal transmission main channel through the first combiner; the first optical data signal sent by the data signal transmission backup module enters the data signal transmission backup channel through the third combiner;

[0033] The second optical data signal transmitted by the data signal transmission main channel enters the data signal receiving module through the first demultiplexer; the second optical data signal transmitted by the data signal transmission backup channel enters the data signal receiving backup module through the third demultiplexer.

[0034] In a possible implementation, the main controller includes a control signal transmitting module, a control signal receiving module, a control signal transmitting backup module, and a control signal receiving backup module;

[0035] The control signal transmitting module and the control signal receiving module are communicatively connected to the control signal transmission main channel; the control signal transmitting backup module and the control signal receiving backup module are communicatively connected to the control signal transmission backup channel.

[0036] In one possible implementation, the regional gateway includes a main channel optical switch, a backup channel optical switch, and a main-backup channel switching optical switch;

[0037] The main channel optical switch is used to switch the data transmission mode between the main data signal transmission channel and the access network; the backup channel optical switch is used to switch the data transmission mode between the backup data signal transmission channel and the access network;

[0038] The main-backup channel switching optical switch is used to switch the data signal transmission backup channel and the data signal transmission backup channel.

[0039] In a possible implementation, the data transmission mode includes a direct mode and a switching mode;

[0040] In the pass-through mode, the first optical data signal passes directly through the regional gateway and is not transmitted to the terminal device corresponding to the regional gateway;

[0041] In the switching mode, the first optical data signal passes through the regional gateway and is transmitted to the terminal device corresponding to the regional gateway; the second optical data signal passes through the regional gateway and enters the backbone network.

[0042] In a third aspect, an embodiment of the present application provides an in-vehicle optical fiber communication method, which is applied to the in-vehicle optical fiber communication system according to any one of the first aspects, comprising:

[0043] The main controller sends an optical control signal to the regional gateway through the control signal transmission channel, and sends a first optical data signal to the regional gateway through the data signal transmission channel;

[0044] The regional gateway receives the optical control signal and the first optical data signal, receives the second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the data signal transmission channel.

[0045] In a fourth aspect, an embodiment of the present application provides another vehicle-mounted optical fiber communication method, which is applied to the vehicle-mounted optical fiber communication system according to any one of the second aspects, including:

[0046] The main controller sends an optical control signal to the regional gateway through the control signal transmission main channel, and sends a first optical data signal to the regional gateway through the data signal transmission main channel;

[0047] The regional gateway receives the optical control signal and the first optical data signal, receives a second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the backbone network;

[0048] In the event that a fault occurs in the main control signal transmission channel, the optical control signal is transmitted through the control signal transmission backup channel; and / or in the event that a fault occurs in the main data signal transmission channel, the first optical data signal and the second optical data signal are transmitted through the data signal transmission backup channel.

[0049] In a fifth aspect, an embodiment of the present application provides a vehicle, comprising the vehicle-mounted fiber optic communication system described in any one of the first aspect or the second aspect.

[0050] The vehicle-mounted optical fiber communication system, method, and vehicle provided by the embodiments of the present application include a main controller, a regional gateway, a terminal device, a backbone network, and an access network; the backbone network and the access network perform signal transmission based on optical fiber; the backbone network includes a control signal transmission channel and a data signal transmission channel; the main controller is used to send an optical control signal to the regional gateway through the control signal transmission channel, and to send a first optical data signal to the regional gateway through the data signal transmission channel; the regional gateway is used to receive the optical control signal and the first optical data signal, and to receive a second optical data signal sent by the terminal device through the access network, and to send a second optical data signal to the main controller through the data signal transmission channel. In this way, the vehicle terminal device can exchange data with the regional gateway based on the access network composed of optical fibers, and the regional gateway can exchange data with the main controller based on the backbone network composed of optical fibers, thereby realizing high-speed data communication between the main controller and the terminal device, improving the data communication rate of the vehicle, and meeting actual usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0052] Figure 1 A schematic diagram of the architecture of a vehicle-mounted optical fiber communication system 100 is provided for an embodiment of the present application;

[0053] Figure 2 A schematic diagram of a specific architecture of a vehicle-mounted optical fiber communication system 100 provided in an embodiment of the present application;

[0054] Figure 3 A schematic diagram of the structure of a main controller 01 provided in an embodiment of the present application;

[0055] Figure 4 A schematic diagram of the structure of a terminal device 03 provided in an embodiment of the present application;

[0056] Figure 5 A schematic diagram of the structure of a regional gateway 02 provided in an embodiment of the present application;

[0057] Figure 6 A schematic diagram of a regional gateway 02 data transmission mode provided in an embodiment of the present application;

[0058] Figure 7 A schematic diagram of the architecture of an on-vehicle optical fiber communication system 200 provided in an embodiment of the present application;

[0059] Figure 8 A schematic diagram of the specific architecture of a vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application;

[0060] Figure 9 A schematic structural diagram of a main controller 01' provided in an embodiment of the present application;

[0061] Figure 10 A schematic diagram of the structure of a regional gateway 02' provided in an embodiment of the present application;

[0062] Figure 11 A schematic diagram of signal transmission for switching between primary and backup data transmission channels of a vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application;

[0063] Figure 12 A schematic diagram of a mode for switching between primary and backup channels of a regional gateway of a vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application;

[0064] Figure 13 A schematic diagram of a process flow of a vehicle-mounted optical fiber communication method provided in an embodiment of the present application;

[0065] Figure 14 A schematic flow chart of a vehicle-mounted optical fiber communication method provided in an embodiment of the present application.

[0066] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0067] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments and drawings described herein are only used to explain the present application, and are not limitations of the present application. It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards, and provide corresponding operation portals for users to choose to authorize or refuse.

[0068] With the continuous development of technologies such as intelligent connected vehicles, autonomous driving, and high-definition video transmission, the number of in-vehicle electronic systems and the amount of data transmitted in vehicles are growing rapidly. High data signal transmission rates are essential for meeting the requirements for real-time, reliable, and secure transmission of in-vehicle information.

[0069] Traditional in-vehicle Ethernet buses use copper cables as a transmission medium, with a maximum transmission rate of no more than 1Gbps, which cannot meet future transmission rate requirements of at least 10Gbps. Furthermore, due to the increase in in-vehicle electronic devices and cabling, copper-based Ethernet buses are heavy and pose problems such as electromagnetic interference. To reduce vehicle weight and protect equipment from electromagnetic interference to ensure vehicle safety, optical fiber has begun to be used as a transmission medium in in-vehicle communication networks. Optical fiber offers advantages such as low transmission loss, high transmission rate, light weight, and resistance to electromagnetic interference. Using optical fiber as the physical medium for in-vehicle network systems can offset the drawbacks of traditional in-vehicle Ethernet, which relies on unshielded copper twisted-pair cables for data transmission.

[0070] In related technologies, although optical fiber is used for communication in the vehicle network architecture, due to factors such as manufacturing process, compatibility and cost, the vehicle network still mostly uses traditional CAN and LIN protocols for low-speed communication. For example, access terminals such as terminal devices need to upload and download data based on CAN and LIN buses, resulting in low efficiency in vehicle data signal transmission and inability to meet actual usage needs.

[0071] In order to solve the above problems, the present application provides an on-vehicle optical fiber communication system, method and vehicle, wherein the on-vehicle optical fiber communication system includes a main controller, a regional gateway, a terminal device, a backbone network and an access network; the backbone network and the access network perform signal transmission based on optical fiber; the backbone network includes a control signal transmission channel and a data signal transmission channel; the main controller is used to send an optical control signal to the regional gateway through the control signal transmission channel, and to send a first optical data signal to the regional gateway through the data signal transmission channel; the regional gateway is used to receive the optical control signal and the first optical data signal, and to receive a second optical data signal sent by the terminal device through the access network, and to send a second optical data signal to the main controller through the data signal transmission channel. In this way, the vehicle terminal device can exchange data with the regional gateway based on the access network composed of optical fibers, and the regional gateway can exchange data with the main controller based on the backbone network composed of optical fibers, thereby realizing high-speed data communication between the main controller and the terminal device, improving the data communication rate of the vehicle, and meeting actual usage requirements.

[0072] The following is a detailed description of the solutions shown in this application through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other, and the same or similar contents will not be repeated in different embodiments.

[0073] Figure 1 The present invention provides an embodiment of a vehicle-mounted optical fiber communication system 100. Figure 1As shown, the vehicle-mounted optical fiber communication system 100 includes a main controller 01, a regional gateway 02, a terminal device 03, a backbone network 04, and an access network 05. The backbone network 04 includes a control signal transmission channel 041 and a data signal transmission channel 042. The backbone network 04 and the access network 05 perform signal transmission based on optical fibers.

[0074] The main controller 01 is configured to send an optical control signal to the regional gateway 02 via a control signal transmission channel, and to send a first optical data signal to the regional gateway 02 via a data signal transmission channel;

[0075] The regional gateway 02 is configured to receive the optical control signal and the first optical data signal, receive the second optical data signal sent by the terminal device 03 via the access network 05, and send the second optical data signal to the main controller 01 via the data signal transmission channel.

[0076] In this embodiment of the present application, optical fiber is used for data signal transmission between the main controller 01, regional gateways 02, and terminal devices 03. The optical fiber between the main controller 01 and each regional gateway 02 forms the vehicle optical fiber communication system's backbone network 04; the optical fiber between the regional gateways 02 and their corresponding terminal devices 03 forms the vehicle optical fiber communication system's access network 05. The backbone network 04 includes both control signal transmission channels and data signal transmission channels, which prevents interference between control and data signals and ensures stable signal transmission.

[0077] Specifically, the main controller 01 can send an optical control signal to the regional gateway 02 through the control signal transmission channel of the backbone network 04. The optical control signal is an optical signal corresponding to the control signal and can be used to control the signal transmission mode of the regional gateway 02; the main controller 01 can also send a first optical data signal to the regional gateway 02 through the data signal transmission channel of the backbone network 04. The first optical data signal is an optical signal corresponding to the data signal, which may include specific data sent by the main controller 01 to the terminal device 03.

[0078] After receiving the optical control signal and the first optical data signal, the regional gateway 02 can adjust the signal transmission mode according to the optical control signal, and determine whether to send the first optical data signal to the terminal device 03 corresponding to the regional gateway 02 based on the difference in signal transmission mode. At the same time, the regional gateway 02 can continue to transmit the optical control signal to the next regional gateway 02, and finally the optical control signal is returned to the main controller 01.

[0079] The regional gateway 02 can also receive a second optical data signal sent by the terminal device 03 through the access network 05. The second optical data signal can refer to an optical signal corresponding to a data signal that the terminal device 03, such as a sensor, needs to upload to the main controller 01. The terminal device 03 can specifically include a sensor or other vehicle electronic control unit (ECU), etc. The embodiment of the present application does not limit the specific type of the access terminal device. The regional gateway 02 can send the second optical data signal to the main controller 01 through the data signal transmission channel in the backbone network 04, thereby realizing high-speed data transmission from the terminal device 03 to the main controller 01. In this way, in the vehicle-mounted optical fiber communication system 100 of the present application, high-speed signal transmission can be performed between the main controller 01, the regional gateway 02 and the terminal device 03 through optical fiber, which improves the signal transmission rate of the vehicle and can meet the actual use requirements of different scenarios.

[0080] For example, Figure 2 This is a schematic diagram of the specific architecture of a vehicle-mounted optical fiber communication system 100 provided in an embodiment of the present application. Figure 2 As shown, the vehicle-mounted optical fiber communication system 100 includes four regional gateways 02, which are distributed at different locations on the vehicle body. Based on actual needs, the number of regional gateways inside the vehicle can be 2, 3, or more, and this embodiment of the application does not limit this.

[0081] The main controller 01 and each regional gateway 02 form the backbone network of the on-board optical fiber communication system 100 via optical fiber. Terminal devices 03 are connected to the nearest regional gateway 02. Each regional gateway 02 and the multiple terminal devices 03 in that area form the access network 05 of the on-board optical fiber communication system. Both the backbone network 04 and the access network 05 utilize optical fiber for high-speed communication.

[0082] Specifically, the backbone network 04 between the main controller 01 and the regional gateways 02 in the on-board fiber-optic communication system 100 can employ a ring network topology. The main controller 01 sends an optical control signal and a first optical data signal to the regional gateways 02, which are transmitted via a control signal transmission channel 041 and a data signal transmission channel 042, respectively. As the optical control signal is transmitted to each regional gateway 02, a portion of the light is split off by a coupler or optical splitter to serve as the optical control signal for that regional gateway 02. The remaining optical control signal is then transmitted to the next regional gateway 02, ultimately returning to the main controller 01. The first optical data signal undergoes no optical-to-electrical-to-optical conversion as it passes through each regional gateway 02. Depending on the data transmission mode of the regional gateway 02 (e.g., direct mode or switching mode), the first optical data signal is either transmitted directly to the next regional gateway 02 or downlinked to the corresponding terminal device 03. Each transmission channel of the backbone network 04 simultaneously transmits optical signals of different wavelength bands, thereby increasing the communication bandwidth of the backbone network 04.

[0083] In one possible embodiment, the access network 05 is a tree-like splitting structure; the first optical data signal is broadcast from the regional gateway 02 to each terminal device 03 through the tree-like splitting structure; the terminal device 03 selectively decodes the first optical data signal; the second optical data signal sent by the terminal device 03 is sent to the regional gateway 02 through the tree-like splitting structure, and is sent to the main controller 01 through the backbone network 04.

[0084] In the embodiment of this application, Figure 2 As shown, the access network 05 between the regional gateway 02 and the terminal device 03 in the on-board optical fiber communication system 100 can adopt a tree-like optical splitting structure. After the first optical data signal from the backbone network 04 is transmitted to the regional gateway 02, if the data transmission mode of the regional gateway 02 is the switching mode, the first optical data signal can be broadcast to each terminal device 03 corresponding to the regional gateway 02 via the optical splitter 051 in the access network 05. The terminal device 03 can selectively decode the first optical data signal, achieving high-speed transmission of the first optical data signal from the main controller 01 to the terminal device 03. The optical splitter 051 can also be replaced by an optical switch, which is not limited in this embodiment of the present application.

[0085] When the terminal device 03 needs to upload data, the terminal device 03 can upload the second optical data signal to the regional gateway 02 in sequence according to the allocated time sequence and based on the tree-like optical splitting structure of the access network 03. The regional gateway 02 then uploads the second optical data signal to the main controller 01 through the data signal transmission channel 042 in the backbone network 04, realizing high-speed transmission of the second optical data signal from the terminal device 03 to the main controller 01, thereby ensuring the overall data communication rate of the vehicle.

[0086] In a possible implementation, the first optical data signal and the second optical data signal are transmitted in the access network 05 using different optical fiber links.

[0087] In the embodiment of this application, Figure 2 As shown, in the on-board fiber optic communication system 100, in order to avoid interference between the upload signal and the download signal, in the access network 05, the first optical data signal sent from the regional gateway 02 to the terminal device 03, and the second optical data signal uploaded from the terminal device 03 to the regional gateway 02, are transmitted using different optical fiber links. For example, the regional gateway 02 sends the first optical data signal to the terminal device 03 through the download optical fiber link in the access network 05, and the terminal device 03 sends the second optical data signal to the regional gateway 02 through the upload optical fiber link in the access network 05. This can avoid signal interference between the upload signal and the download signal in the access network 05, and ensure the stability and reliability of signal transmission.

[0088] In a possible implementation, the main controller 01 includes a first optical transceiver module; the first optical transceiver module is used to integrate optical signals of multiple different wavelength bands into the same optical fiber for transmission.

[0089] In an embodiment of the present application, an optical transceiver module may be provided in the main controller 01 and the terminal device 03 of the vehicle-mounted optical fiber communication system 100. The optical transceiver module may be used to integrate multiple optical signals of different wavelengths into the same optical fiber for transmission, and implement wavelength division multiplexing (WDA) in the backbone network and the access network, that is, to combine two or more optical carrier signals of different wavelengths and couple them into the same optical fiber for transmission. Specifically, the main controller 01 of the vehicle-mounted optical fiber communication system 100 may include a first optical transceiver module, which may specifically include a wavelength splitter and / or a wavelength combiner, etc. The first optical transceiver module may integrate multiple optical signals of different wavelengths into the same optical fiber for transmission, thereby improving the communication bandwidth of the vehicle-mounted optical fiber communication system 100.

[0090] In a possible implementation, the main controller 01 further includes a data signal transmitting module and a data signal receiving module; the first optical transceiver module includes a first splitter and a first combiner;

[0091] The first optical data signal sent by the data signal transmitting module enters the data signal transmission channel through the first combiner; the second optical data signal in the data signal transmission channel enters the data signal receiving module through the first splitter.

[0092] Figure 3 This is a schematic diagram of the structure of a main controller 01 provided in an embodiment of the present application. Figure 3As shown, the main controller 01 in the vehicle-mounted optical fiber communication system 100 includes a control signal transmitting module 011, a control signal receiving module 012, a data signal transmitting module 013, a data signal transmitting and receiving module 014, a first combiner 015 and a first splitter 016, wherein the first optical transceiver module in the main controller 01 includes a first combiner 015 and a first splitter 016, the number of data signal transmitting modules 013 and data signal receiving modules 014 can be N, N is a positive integer, and the specific value of N can be determined according to the number of transmission bands, which is not limited in the embodiment of the present application.

[0093] Specifically, the first optical data signal emitted by the data signal transmitting module 013 of the main controller 01 is collected and coupled by the signal of the first combiner 015, and enters the data signal transmission channel 042 in the backbone network 04; the second optical data signal in the data signal transmission channel 042 passes through the first splitter 016 in the main controller 01 and enters the data signal receiving module 014, thereby realizing wavelength division multiplexing of the signal in the backbone network 04 and improving the communication bandwidth and signal transmission rate.

[0094] In a possible implementation, the terminal device 03 includes a second optical transceiver module; the second optical transceiver module is used to integrate optical signals of multiple different wavelength bands into the same optical fiber for transmission.

[0095] In an embodiment of the present application, similar to the main controller 01, the terminal device 03 may include a second optical transceiver module, which is used to integrate two or more optical signals of different bands into the same optical fiber for transmission, thereby improving the communication bandwidth of the vehicle-mounted optical fiber communication system access network.

[0096] In one possible embodiment, the terminal device 03 also includes a transmitting module 031 and a receiving module 032; the second optical transceiver module includes a second splitter 034 and a second combiner 033; the second optical data signal sent by the transmitting module 031 enters the access network 05 through the second combiner 033; the first optical data signal sent by the regional gateway 02 enters the receiving module 032 through the second splitter 034.

[0097] Figure 4 This is a schematic diagram of the structure of a terminal device 03 in a vehicle-mounted optical fiber communication system provided in an embodiment of the present application. Figure 4As shown, terminal device 03 in the in-vehicle fiber-optic communication system 100 includes a transmitting module 031, a receiving module 032, a second combiner 033, and a second demultiplexer 034. The second optical transceiver module in terminal device 03 includes the second combiner 033 and the second demultiplexer 034. Similarly, the number of transmitting modules 031 and receiving modules 032 can be N, with the specific value of N being determined based on the number of actual transmission bands. Specifically, the first optical data signal transmitted from regional gateway 02 to terminal device 03 is demultiplexed by the second demultiplexer 034 in terminal device 03 before entering each receiving module 032. The second optical data signal emitted by each transmitting module 031 passes through the second combiner 033, enters access network 05, and is sent to regional gateway 02. Thus, by providing the second optical transceiver module including the second combiner 033 and the second demultiplexer 034 in terminal device 03, the communication bandwidth of access network 05 can be increased, thereby improving the overall data transmission rate of the vehicle.

[0098] In one possible implementation, the regional gateway 02 includes an optical switch; the regional gateway 02 is configured to receive and analyze a portion of the optical control signal to switch the optical switch state; the optical switch state includes a through mode and a switching mode;

[0099] In the pass-through mode, the first optical data signal sent by the main controller 01 passes directly through the regional gateway 02 and is not transmitted to the terminal device 03 corresponding to the regional gateway 02; in the switching mode, the first optical data signal passes through the regional gateway 02 and is transmitted to the terminal device 03 corresponding to the regional gateway 02; the second optical data signal sent by the terminal device 03 passes through the regional gateway 02 and enters the backbone network 05.

[0100] In an embodiment of the present application, the regional gateway 05 may include an optical switch, which can be used to switch the data transmission mode of the regional gateway. The regional switch 02 can receive and parse part of the optical control signal, and switch the state of the optical switch according to the part of the optical control signal. The data transmission mode corresponds to the optical switch state. The optical switch state or data transmission mode includes a pass-through mode and a switching mode. The pass-through mode means that the first optical data signal sent by the main controller 01 is not transmitted to the terminal device 03 corresponding to the regional gateway 02, but is directly transmitted to the next regional gateway 02 through the regional gateway 02. The switching mode means that the first optical data signal sent by the main controller 01 passes through the regional gateway 02 and is transmitted downward to the terminal device 03 corresponding to the regional gateway 02. At the same time, the second optical data signal uploaded by the terminal device 03 can pass through the regional gateway 02 and enter the backbone network 05. In this way, the regional gateway 02 can improve the reliability and flexibility of data transmission through different data transmission modes.

[0101] For example, Figure 5This is a structural diagram of a regional gateway 02 provided in an embodiment of the present application. Figure 5 As shown, the regional gateway 02 includes an optical coupler 021, a control signal processor 022, and an optical switch 023. Specifically, the optical coupler 021 is connected to the control signal transmission channel 041 of the backbone network 04 and is used to receive the optical control signal sent by the main controller 01. The optical coupler 021 can specifically receive a partial copy of the optical control signal and parse the partial copy of the optical control signal through the control signal processor 022 to control the state of the optical switch 023, thereby switching the data transmission mode of the regional gateway 02.

[0102] For example, Figure 6 This is a schematic diagram of a regional gateway 02 data transmission mode provided in an embodiment of the present application. Figure 6 As shown, the optical switch state or data transmission mode of the regional gateway 02 includes a through mode (Through) and an exchange mode (Exchange). In the through mode, the data time segments matched by some optical control signals are not used. At this time, the first optical data signal transmitted by the main controller 01 passes directly through the regional gateway 02 and is not transmitted downward to the terminal device 03 corresponding to the regional gateway 02. Instead, it is transmitted to the next regional gateway 02 for processing.

[0103] In switching mode, the data time segments matched by some control signals are used. That is, during these data time segments, the optical switch is in switching mode. During these data time segments, the first optical data signal transmitted by the master controller 01 is transmitted downward to the terminal device 03 corresponding to the regional gateway 02, enabling the terminal device 03 to download data. Simultaneously, the terminal device 03 can also upload the second optical data signal to the access network 05, which is then transmitted to the master controller 01 via the backbone network 04, enabling the terminal device 03 to upload data.

[0104] It should be noted that since the backbone network 04 and the access network 05 are both based on optical fiber for signal transmission, in the embodiment of the present application, the vehicle-mounted optical fiber communication system 100 in the regional gateway 02 does not require photoelectric conversion for the downlink of the first optical data signal and the uplink of the second optical data signal, which can increase the data transmission rate and reduce the signal transmission delay.

[0105] In a possible implementation manner, the optical control signal is sent out one time segment earlier than the first optical data signal.

[0106] In this embodiment of the present application, a time slot may refer to the minimum time unit for signal transmission, with each time slot corresponding to an independent signal transmission window. The optical control signal and first optical data signal transmitted by master controller 01 are divided into multiple time slots, with the optical control signal being transmitted one time slot earlier than the corresponding first optical data signal. Thus, when master controller 01 transmits the optical control signal and first optical data signal via backbone network 04, the optical control signal arrives at regional gateway 02 one time slot earlier than the corresponding first optical data signal. By receiving and parsing a portion of the optical control signal, regional gateway 02 can pre-set the optical switch state, thereby ensuring the reliability and accuracy of optical data signal transmission.

[0107] In a possible implementation, in the exchange mode, the first optical data signal and the second optical data signal are transmitted in the same time segment.

[0108] In this embodiment of the present application, when the data transmission mode of regional gateway 02 is switched, the downlink transmission of the first optical data signal in backbone network 04 and the uplink transmission of the second optical data signal in access network 05 can be bidirectionally transmitted in the same time segment. Compared to the related art method in which bidirectional signals between each gateway and the central controller require two control signals to be configured in two different time segments and data transmission is performed separately, in this embodiment of the present application, when the data transmission mode is switched, regional gateway 02 can simultaneously perform downlink transmission of the first optical data signal and uplink transmission of the second optical data signal, occupying the same time segment, thereby saving communication bandwidth and reducing data transmission latency.

[0109] In a possible implementation, the partial optical control signal includes a first control signal and a second control signal; when the regional gateway 02 receives the second control signal, the optical switch state is switched from the pass-through mode to the switching mode within the time segment corresponding to the second control signal.

[0110] In this embodiment of the present application, the partial optical control signals received and parsed by regional gateway 02 include two control signals: a first control signal and a second control signal, which correspond to switching the optical switch of regional gateway 02 to direct mode and switching mode, respectively. When regional gateway 02 does not receive any partial optical control signals or receives the first control signal, optical switch 023 of regional gateway 02 is in direct mode. When the regional gateway receives the second control signal, regional gateway 02 switches optical switch 023 to switching mode based on the second control signal. This prevents frequent switching of optical switch 023 and reduces its power consumption.

[0111] In one possible implementation, the optical switch 023 includes two input ports and two output ports. The type of the optical switch 023 includes a tunable multimode interferometer or a tunable directional coupler. The tuning method of the optical switch 023 includes a thermo-optic switch, a micro-electromechanical system optical switch, or an electro-optical switch.

[0112] In the embodiment of the present application, the optical switch 023 may include two input ports and two output ports, that is, a 2×2 optical switch device is used. The type of optical switch 023 in each regional gateway 02 may specifically include a tunable multi-mode interferometer (Tunable Multi-Mode Interferometer, MMI) or a tunable directional coupler (Tunable Directional Coupler, DC), etc., and of course other types may also be included, which is not limited in the embodiment of the present application. The tuning method of the optical switch (the method of changing the optical path state) may include a thermo-optical switch, a micro-electromechanical system optical switch or an electro-optical switch, etc., wherein the thermo-optical switch can change the refractive index of the material by heating the waveguide (such as an integrated resistor, etc.); the micro-electromechanical system optical switch (Micro-Electro-Mechanical Systems, MEMS) adjusts the optical path through a micro-mirror or waveguide displacement mechanism; the electro-optical switch can use the electro-optical effect to quickly adjust the refractive index. Of course, the specific tuning method of the optical switch may also adopt other types, which can be set based on the actual needs of the vehicle, and is not limited in the embodiment of the present application. In this way, the vehicle-mounted optical fiber communication system can further improve the vehicle communication rate and ensure the security of vehicle communication by flexibly selecting the optical switch type and tuning method.

[0113] In a possible implementation, the optical fiber includes at least one of a multimode glass optical fiber, a single-mode glass optical fiber, a plastic optical fiber, and a hollow-core optical fiber.

[0114] In the embodiments of the present application, the optical fibers of the vehicle-mounted optical fiber communication system 100 can include one or more of multimode glass optical fibers, single-mode glass optical fibers, plastic optical fibers, and hollow-core optical fibers, providing greater flexibility and reliability in the selection of optical fiber types. Furthermore, to address the complex wiring requirements of vehicles, the optical fibers of the vehicle-mounted optical fiber communication system 100 can be designed with bend-insensitive, high-temperature coatings, or multiple coatings to meet the actual vehicle usage requirements.

[0115] In addition, since the actual environment of the vehicle is usually a high-temperature vehicle environment, the laser used in traditional communications is not suitable for direct application to the vehicle-mounted optical fiber communication system 100 in the embodiment of the present application. The transmission module (control signal transmission module in the main controller, data signal transmission module and transmission module in the terminal device, etc.) used in the vehicle-mounted optical fiber communication system 100 in the embodiment of the present application needs to have high-temperature stability. For example, a multi-mode vertical cavity surface emitting laser (VCSEL) can use a 980 nanometer (nm) or 1064 nanometer wavelength or a quantum dot VCSEL structure to improve high-temperature resistance. A single-mode laser can use a quantum dot structure laser. Of course, other types of lasers can also be used, and the specific selection can be based on actual needs. The embodiment of the present application does not limit this.

[0116] Based on the above embodiments, Figure 7 FIG2 is a schematic diagram of another vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application. Figure 7 As shown, the vehicle-mounted optical fiber communication system 200 includes a main controller 01', a regional gateway 02', a terminal device 03', a backbone network 04' and an access network 05'; the backbone network 04' and the access network 05' perform signal transmission based on optical fibers; the backbone network 04' includes a control signal transmission main channel 041A and a data signal transmission main channel 042A, and also includes a control signal transmission backup channel 041B and / or a data signal transmission backup channel 042B ( Figure 7 The "and" situation is shown in the figure. In actual application, only the control signal transmission backup channel 041B or the data signal transmission backup channel 042B may be included.

[0117] The main controller 01' is configured to send an optical control signal to the regional gateway 02' via the control signal transmission main channel 041A, and to send a first optical data signal to the regional gateway 02' via the data signal transmission main channel 042A;

[0118] The regional gateway 02' is configured to receive the optical control signal and the first optical data signal, receive the second optical data signal sent by the terminal device 03' via the access network 05', and send the second optical data signal to the main controller 01' via the backbone network 04';

[0119] In the event of a failure in the control signal transmission main channel 041A, the optical control signal is transmitted through the control signal transmission backup channel 041B; and / or, in the event of a failure in the data signal transmission main channel 042A, the first optical data signal and the second optical data signal are transmitted through the data signal transmission backup channel 042B.

[0120] In related technologies, the network topology architecture of existing automobiles usually does not include backup lines. If the light source or optical fiber channel at any location in the network fails, the entire vehicle communication network will be paralyzed, and the stability and robustness of the vehicle network system are not strong.

[0121] For example, Figure 8 This is a schematic diagram of the specific architecture of another vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application. Figure 8 As shown, the vehicle-mounted optical fiber communication system 200 sets a backup topology for the backbone network 04'. In addition to the control signal transmission main channel 041A and the data signal transmission main channel 042A, the backbone network 04' also includes a control signal transmission backup channel 041B and / or a data signal transmission backup channel 042B. It should be noted that Figure 8 The control signal transmission backup channel 041B and the terminal devices 03' corresponding to the regional gateways 02' are not shown. Figure 8 An implementation scheme including a data signal transmission backup channel 042B is shown. In actual application, the backbone network 04' may also include a control signal transmission backup channel 041B, or include both a control signal transmission backup channel 041B and a data signal transmission backup channel 042B. This embodiment of the present application does not limit this.

[0122] Specifically, when a fault is detected in the control signal transmission main channel 041A or the data signal transmission main channel 042A in the backbone network 04' (for example, the regional gateway 02' does not receive the optical control signal or the first optical data signal, the optical power is abnormal, the signal-to-noise ratio does not meet the preset conditions, the light source fails or the link fails, etc.), the on-board fiber optic communication system 200 can transmit signals through the corresponding control signal transmission backup channel 041B or the data signal transmission backup channel 042B, so as to achieve flexible switching between the main channel and the backup channel, and ensure the stability and reliability of vehicle communication.

[0123] In one possible implementation, the main controller 01' includes a data signal transmitting module, a data signal transmitting backup module, a data signal receiving module, a data signal receiving backup module, a first optical transceiver module, and a third optical transceiver module; the first optical transceiver module includes a first splitter and a first combiner; the third optical transceiver module includes a third splitter and a third combiner;

[0124] The first optical data signal sent by the data signal transmission module enters the data signal transmission main channel through the first combiner; the first optical data signal sent by the data signal transmission backup module enters the data signal transmission backup channel through the third combiner;

[0125] The second optical data signal transmitted by the data signal transmission main channel enters the data signal receiving module through the first splitter; the second optical data signal transmitted by the data signal transmission backup channel enters the data signal receiving backup module through the third splitter.

[0126] In an embodiment of the present application, the main controller 01' of the vehicle-mounted communication system may also include, in addition to the data signal transmitting module, the data signal receiving module and the first optical transceiver module, a data signal transmitting backup module, a data signal receiving backup module and a third optical transceiver module in the backup architecture. Similarly, the number N of the data signal transmitting backup modules and the data signal receiving backup modules may be set according to the actual transmission band requirements, corresponding to the data signal transmitting module and the data signal receiving module, respectively.

[0127] For example, Figure 9 This is a schematic diagram of the structure of a main controller 01' provided in an embodiment of the present application. Figure 9 As shown, the main controller 01' includes a data signal transmitting module 013A, a data signal transmitting backup module 013B, a data signal receiving module 014A, a data signal receiving backup module 014B, a first combiner 015A, a first splitter 016A, a third combiner 015B and a third splitter 016B.

[0128] Specifically, the first optical data signal emitted by data signal transmission module 013A is aggregated and coupled by first combiner 015A and enters data signal transmission main channel 042A in backbone network 04'. The first optical data signal emitted by data signal transmission backup module 013B is aggregated and coupled by third combiner 015B and enters data signal transmission backup channel 042B in backbone network 04'. The second optical data signal transmitted in data signal transmission main channel 042A passes through first splitter 016A and enters data signal receiving module 014A. The second optical data signal transmitted in data signal transmission backup channel 042B passes through third splitter 016B and enters data signal receiving module 014B. In this way, the on-vehicle fiber-optic communication system 200, through the backup architecture of main controller 01' and backbone network 04', can ensure the stability and reliability of signal transmission.

[0129] In one possible implementation, the main controller includes a control signal transmitting module, a control signal receiving module, a control signal transmitting backup module, and a control signal receiving backup module;

[0130] The control signal transmitting module and the control signal receiving module are communicatively connected to the control signal transmission main channel; the control signal transmitting backup module and the control signal receiving backup module are communicatively connected to the control signal transmission backup channel.

[0131] In the embodiment of this application, Figure 9 As shown, the main controller 01' of the vehicle-mounted optical fiber communication system 200 may also include a control signal transmission module 011A, a control signal transmission backup module 011B, a control signal receiving module 012A, and a control signal receiving backup module 012B. The control signal transmission module 011A and the control signal receiving module 012A are communicatively connected to the main control signal transmission channel 041A in the backbone network, while the control signal transmission backup module 011B and the control signal receiving backup module 012B are communicatively connected to the main control signal transmission channel 041B in the backbone network. Thus, by backing up the control signal transceiver modules and the control signal transmission channels in the backbone network 04' in the main controller 01', the vehicle-mounted optical fiber communication system 200 can ensure the stability and reliability of optical control signal transmission, reception, and transmission, thereby ensuring the robustness of the vehicle's overall communication.

[0132] It should be noted that in the main controller 01' of the vehicle-mounted fiber optic communication system 200, backup settings can be made only for the transceiver module of the control signal and the control signal transmission channel, or backup settings can be made only for the transceiver module of the data signal and the data signal transmission channel, or backup settings can be made for the transceiver modules and transmission channels involved in the control signal and the data signal at the same time. The specific settings can be made based on actual needs, and the embodiments of the present application do not limit this.

[0133] In one possible implementation, the regional gateway 02' includes a main channel optical switch, a backup channel optical switch, and a main-backup channel switching optical switch;

[0134] The main channel optical switch is used to switch the data signal transmission mode between the main data signal transmission channel and the access network; the backup channel optical switch is used to switch the data signal transmission mode between the backup data signal transmission channel and the access network; the main and backup channel switching optical switch is used to switch the backup data signal transmission channel and the backup data signal transmission channel.

[0135] In the embodiment of the present application, the switching of the main transmission channel and the backup transmission channel in the backbone network 01' in the vehicle-mounted optical fiber communication system 200 can be achieved through each regional gateway 02'. This ensures that the main and backup transmission channels are switched for specific fault points, ensuring the overall reliability of the vehicle-mounted communication. The switching of the main and backup transmission channels in the regional gateway 02' can be achieved through an optical switch. The regional gateway 02' can be provided with a main channel optical switch, a backup channel optical switch, and a main and backup channel switching optical switch. The main channel optical switch can be used to switch the data transmission mode between the main data transmission channel and the access network; the backup channel optical switch can be used to switch the data transmission mode between the data signal transmission backup channel and the access network; and the main and backup channel switching optical switch can be used to switch the data signal transmission backup channel and the data signal transmission backup channel. In this way, the vehicle-mounted optical fiber communication system 200 ensures the fast and flexible switching of the main and backup transmission channels in the backbone network 04' through the setting of the optical switch in the regional gateway 02', which can ensure the stability of the vehicle-mounted optical fiber communication.

[0136] For example, Figure 10 This is a structural diagram of a regional gateway 02' provided in an embodiment of the present application. Figure 10 As shown, regional gateway 02' includes an optical coupler 021, a control signal processor 022, a main channel optical switch 023, a backup channel optical switch 024, and a main-backup channel switching optical switch 025. The three optical switches in regional gateway 02' are all configured in a 2×2 configuration and can be identical. Specifically, the main data signal transmission channel 042A and the backup data signal transmission channel 042B are respectively connected to the two input terminals of the main-backup channel switching optical switch 025. The first input terminal of the main-backup channel switching optical switch 025 is connected to the first input terminal of the main channel optical switch 023; the second input terminal of the main-backup channel switching optical switch 025 is connected to the second input terminal of the backup channel optical switch 024; the first output terminal of the main channel optical switch 023 is connected to the main data signal transmission channel 042A, and the second output terminal of the backup channel optical switch 024 is connected to the backup data signal transmission channel 042B. The second input of main channel optical switch 023 is connected to the first input of backup channel optical switch 024, serving as the upload optical link for terminal devices in the access network. The second output of main channel optical switch 023 is connected to the second output of backup channel optical switch 024, serving as the download optical link for terminal devices in the access network. In this way, the on-board optical fiber communication system, through the combination of optical switches in the regional gateway, ensures flexible switching between the main channel for backbone network data signal transmission and the backup channel for backbone network data transmission.

[0137] It should be noted that Figure 10Only the switching setting for the data signal transmission channel in the regional gateway 02' is shown. In actual application, the regional gateway 02' may also include an optical switch for switching the control signal transmission channel. The specific setting method may be to set at least one control signal optical switch before the optical coupler 021 to achieve switching between the control signal transmission main channel 041A and the control signal transmission backup channel 041B, etc. The embodiment of the present application is not limited to this.

[0138] In one possible embodiment, the data transmission mode includes a pass-through mode and a switching mode; in the pass-through mode, the first optical data signal passes directly through the regional gateway 02' and is not transmitted to the terminal device 03' corresponding to the regional gateway 02'; in the switching mode, the first optical data signal passes through the regional gateway 02' and is transmitted to the terminal device 03' corresponding to the regional gateway 02'; the second optical data signal passes through the regional gateway 02' and enters the backbone network 04'.

[0139] In the embodiment of the present application, similar to the on-board optical fiber communication system 100, the data transmission mode of the regional gateway in the on-board optical fiber communication system 200 may include a straight-through mode and a switching mode. Specifically, the straight-through mode refers to a transmission mode in which the first optical data signal transmitted in the backbone network is directly transmitted to the next regional gateway 02' through the regional gateway 02', without being sent down to the terminal device 03' corresponding to the regional gateway 02'; the switching mode refers to a transmission mode in which the first optical data signal transmitted in the backbone network 04' reaches the regional gateway 02', and the regional gateway sends the first optical data signal to the terminal device 03' through the access network 05', and at the same time, the terminal device 03' can upload the second optical data signal to the regional gateway 02' through the access network 05'. In this way, based on different data transmission modes, the on-board optical fiber communication system 200 can ensure the security of data transmission while ensuring the data transmission rate.

[0140] For example, Figure 11 A schematic diagram of signal transmission for switching between primary and backup data transmission channels of an on-vehicle optical fiber communication system 200 provided in an embodiment of the present application. Figure 12 A schematic diagram of a mode of switching the main and backup channels of a regional gateway of a vehicle-mounted optical fiber communication system 200 provided in an embodiment of the present application. Figure 11As shown, in the vehicle-mounted optical fiber communication system 200, taking the switching of the data signal transmission main channel 042A and the data signal transmission backup channel 042B in the backbone network 04' as an example, the optical data signal is sent from the main controller 01', transmitted to the regional gateway 02'C through the data signal transmission main channel 042A in the backbone network, and then transmitted to the regional gateway 02'D through the data signal transmission main channel 042A. At this time, due to a failure in the data signal transmission main channel 042A of the backbone network, the regional gateway 02'D switches from the data signal transmission main channel 042A to the data signal transmission backup channel 042B. The optical data signal enters regional gateway 02'E from regional gateway 02'D via data signal transmission backup channel 042B; then continues to enter regional gateway 02'F via data signal transmission backup channel 042B. At this time, due to a failure in data signal transmission backup channel 042B of backbone network 04', regional gateway 02'F switches from data signal transmission backup channel 042B to data signal transmission main channel 042A, and the optical data signal enters main controller 01' from regional gateway 02'F via data signal transmission main channel 042A. It should be noted that the optical data signal in the above transmission process can refer to the first optical data signal and / or the second optical data signal at different transmission stages, which is not limited in the embodiments of the present application.

[0141] like Figure 12 As shown, Figure 11 The central regional gateways 02'C, 02'D, 02'E and 02'F can respectively correspond to the four working modes of the regional gateway in the vehicle-mounted optical fiber communication system 200, namely, main channel transmission mode, main channel switching backup channel transmission mode, backup channel transmission mode and backup channel switching main channel transmission mode.

[0142] Specifically, in the main channel transmission mode, the optical data signal is transmitted to the regional gateway 02'C through the data signal transmission main channel 042A. In the regional gateway 02'C, the main-backup channel switching optical switch 025 is in the straight-through mode, and the data signal transmission main channel 042A and the data signal transmission backup channel 042B are not switched; the optical data signal passes through the main channel optical switch 023 and transmits the signal according to the data transmission mode (straight-through mode or switching mode) of the main channel optical switch 023; the backup channel optical switch 024 is in a non-working state.

[0143] In the main channel switching backup channel transmission mode, the optical data signal is transmitted to the regional gateway 02'D through the data signal transmission main channel 042A; in the regional gateway 02'D, the main and backup channel switching optical switch 025 is in the switching mode, and the data signal transmission main channel 042A is switched to the data signal transmission backup channel 042B; the optical data signal is transmitted according to the data transmission mode (through mode or switching mode) of the backup channel optical switch 024; the main channel optical switch 023 is in a non-working state.

[0144] In backup channel transmission mode, optical data signals are transmitted to regional gateway 02'E via backup data signal transmission channel 042B. In regional gateway 02'E, primary / backup channel switching optical switch 025 is in direct-through mode, and the primary data signal transmission channel 042A and the backup data signal transmission channel 042B are not switched. Optical data signals are transmitted according to the data transmission mode (direct-through mode or switching mode) of backup channel optical switch 024, while primary channel optical switch 023 is inactive.

[0145] In the backup channel switching primary channel transmission mode, optical data signals are transmitted to regional gateway 02'F via backup data signal transmission channel 042B. Within regional gateway 02'F, primary / backup channel switching optical switch 025 is in switching mode, and backup data signal transmission channel 042B switches to primary data signal transmission channel 042A. Optical data signals are transmitted according to the data transmission mode (through mode or switching mode) of primary channel switch 023, while backup channel switch 024 is inactive.

[0146] It should be emphasized that, except for the backup architecture, the remaining implementation methods of the vehicle-mounted fiber-optic communication system 200 and the vehicle-mounted fiber-optic communication system 100 (such as access network and terminal equipment, etc.) are the same, and can achieve the same technical effects. The embodiments of this application will not be repeated here.

[0147] Based on the above embodiments, Figure 13 This is a flow chart of a vehicle-mounted optical fiber communication method provided in an embodiment of the present application. Figure 13 The vehicle-mounted optical fiber communication method is applied to the above-mentioned vehicle-mounted optical fiber communication system 100, and may specifically include:

[0148] S1301. The main controller sends an optical control signal to the regional gateway through a control signal transmission channel, and sends a first optical data signal to the regional gateway through a data signal transmission channel.

[0149] S1302: The regional gateway receives the optical control signal and the first optical data signal, receives the second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the data signal transmission channel.

[0150] In the vehicle-mounted optical fiber communication method provided by an embodiment of the present application, the main controller of the vehicle-mounted optical fiber communication system sends an optical control signal to a regional gateway via a control signal transmission channel, and sends a first optical data signal to the regional gateway via a data signal transmission channel. The regional gateway receives the optical control signal and the first optical data signal, receives a second optical data signal sent by a terminal device via an access network, and sends the second optical data signal to the main controller via the data signal transmission channel. In this way, the vehicle terminal device can exchange data with the regional gateway based on the access network composed of optical fibers, and the regional gateway can exchange data with the main controller based on the backbone network composed of optical fibers. This achieves high-speed data communication between the main controller and the terminal device, improves the vehicle's data communication rate, and can meet actual usage requirements.

[0151] Based on the above embodiments, Figure 14 This is a flow chart of a vehicle-mounted optical fiber communication method provided in an embodiment of the present application. Figure 14 The vehicle-mounted optical fiber communication method is applied to the above-mentioned vehicle-mounted optical fiber communication system 200, and specifically may include:

[0152] S1401. The main controller sends an optical control signal to the regional gateway through a control signal transmission main channel, and sends a first optical data signal to the regional gateway through a data signal transmission main channel.

[0153] S1402: The regional gateway receives the optical control signal and the first optical data signal, receives the second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the backbone network.

[0154] S1403. When a fault occurs in a primary control signal transmission channel, the optical control signal is transmitted through a control signal transmission backup channel; and / or when a fault occurs in a primary data signal transmission channel, the first optical data signal and the second optical data signal are transmitted through a data signal transmission backup channel.

[0155] In an embodiment of the present application, the vehicle optical fiber communication system is provided with a control signal transmission channel and a data signal transmission channel in the backbone network, as well as a control signal transmission backup channel and / or a data signal transmission backup channel. In the event of a failure in the primary control signal transmission channel, the optical control signal is transmitted via the control signal transmission backup channel; in the event of a failure in the primary data signal transmission channel, the first optical data signal and the second optical data signal are transmitted via the data signal transmission backup channel. In this way, the vehicle optical fiber communication system can not only improve the signal transmission rate of the entire vehicle, but also ensure the stability and security of signal transmission.

[0156] An embodiment of the present application also provides a vehicle, which includes the vehicle-mounted fiber optic communication system 100 or the vehicle-mounted fiber optic communication system 200 in the aforementioned embodiment. The specific implementation method can refer to the aforementioned embodiment and can achieve the same technical effect. The embodiment of the present application will not be repeated here.

[0157] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0158] In this application, the term "include" and its variations may refer to non-restrictive inclusion; the term "or" and its variations may refer to "and / or". In this application, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In this application, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0159] The above are only some embodiments of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as within the scope of protection of the present application.

Claims

1. A vehicle-mounted optical fiber communication system, characterized in that: It includes a main controller, a regional gateway, a terminal device, a backbone network and an access network; the backbone network and the access network perform signal transmission based on optical fibers; the backbone network includes a control signal transmission channel and a data signal transmission channel; The main controller is configured to send an optical control signal to the regional gateway through the control signal transmission channel, and send a first optical data signal to the regional gateway through the data signal transmission channel; The regional gateway is configured to receive the optical control signal and the first optical data signal, receive the second optical data signal sent by the terminal device through the access network, and send the second optical data signal to the main controller through the data signal transmission channel.

2. The system according to claim 1, wherein: The access network is a tree-like optical splitting structure; the first optical data signal is broadcast from the regional gateway to each terminal device through the tree-like optical splitting structure; the terminal device selectively decodes the first optical data signal; The second optical data signal sent by the terminal device is sent to the regional gateway through the tree-like optical splitting structure, and is sent to the main controller through the backbone network.

3. The system according to claim 2, characterized in that The first optical data signal and the second optical data signal are transmitted in the access network using different optical fiber links.

4. The system according to claim 1, wherein: The main controller includes a first optical transceiver module; the first optical transceiver module is used to integrate optical signals of multiple different bands into the same optical fiber for transmission.

5. The system according to claim 4, characterized in that The main controller further includes a data signal transmitting module and a data signal receiving module; the first optical transceiver module includes a first splitter and a first combiner; The first optical data signal sent by the data signal transmitting module enters the data signal transmission channel through the first combiner; the second optical data signal in the data signal transmission channel enters the data signal receiving module through the first splitter.

6. The system according to claim 1, wherein: The terminal device includes a second optical transceiver module; the second optical transceiver module is used to integrate optical signals of multiple different bands into the same optical fiber for transmission.

7. The system according to claim 6, characterized in that The terminal device further includes a transmitting module and a receiving module; the second optical transceiver module includes a second splitter and a second combiner; The second optical data signal sent by the transmitting module enters the access network through the second combiner; the first optical data signal sent by the regional gateway enters the receiving module through the second splitter.

8. The system according to any one of claims 1 to 7, characterized in that The regional gateway includes an optical switch; The regional gateway is used to receive and analyze part of the optical control signal to switch the optical switch state; the optical switch state includes a through mode and a switching mode; In the pass-through mode, the first optical data signal sent by the main controller passes directly through the regional gateway and is not transmitted to the terminal device corresponding to the regional gateway; In the switching mode, the first optical data signal passes through the regional gateway and is transmitted to a terminal device corresponding to the regional gateway; The second optical data signal sent by the terminal device enters the backbone network through the regional gateway.

9. The system according to claim 8, characterized in that The optical control signal is sent out one time segment earlier than the first optical data signal.

10. The system according to claim 8, wherein: In the exchange mode, the first optical data signal and the second optical data signal are transmitted in the same time segment.

11. The system according to claim 8, wherein: The partial optical control signal includes a first control signal and a second control signal; When the regional gateway receives the second control signal, the optical switch state is switched from the direct mode to the switching mode within a time segment corresponding to the second control signal.

12. The system according to claim 8, wherein: The optical switch includes two input ports and two output ports; the type of the optical switch includes an adjustable multimode interferometer or an adjustable directional coupler; the tuning method of the optical switch includes a thermo-optic switch, a micro-electromechanical system optical switch or an electro-optical switch.

13. The system according to claim 1, wherein: The optical fiber includes at least one of a multimode glass optical fiber, a single-mode glass optical fiber, a plastic optical fiber and a hollow optical fiber.

14. A vehicle-mounted optical fiber communication system, characterized in that: It includes a main controller, regional gateways, terminal equipment, a backbone network and an access network; the backbone network and the access network perform signal transmission based on optical fibers; the backbone network includes a main control signal transmission channel and a main data signal transmission channel, and also includes a control signal transmission backup channel and / or a data signal transmission backup channel; The main controller is configured to send an optical control signal to the regional gateway through the control signal transmission main channel, and send a first optical data signal to the regional gateway through the data signal transmission main channel; The regional gateway is configured to receive the optical control signal and the first optical data signal, receive a second optical data signal sent by the terminal device through the access network, and send the second optical data signal to the main controller through the backbone network; In the event that a fault occurs in the main control signal transmission channel, the optical control signal is transmitted through the control signal transmission backup channel; and / or in the event that a fault occurs in the main data signal transmission channel, the first optical data signal and the second optical data signal are transmitted through the data signal transmission backup channel.

15. The system according to claim 14, wherein: The main controller includes a data signal transmitting module, a data signal transmitting backup module, a data signal receiving module, a data signal receiving backup module, a first optical transceiver module and a third optical transceiver module; the first optical transceiver module includes a first splitter and a first combiner; the third optical transceiver module includes a third splitter and a third combiner; The first optical data signal sent by the data signal transmission module enters the data signal transmission main channel through the first combiner; the first optical data signal sent by the data signal transmission backup module enters the data signal transmission backup channel through the third combiner; The second optical data signal transmitted by the data signal transmission main channel enters the data signal receiving module through the first wave splitter; The second optical data signal transmitted by the data signal transmission backup channel enters the data signal receiving backup module through the third wave splitter.

16. The system according to claim 14, wherein: The main controller includes a control signal transmitting module, a control signal receiving module, a control signal transmitting backup module and a control signal receiving backup module; The control signal transmitting module and the control signal receiving module are communicatively connected to the control signal transmission main channel; the control signal transmitting backup module and the control signal receiving backup module are communicatively connected to the control signal transmission backup channel.

17. The system according to claim 14, wherein: The regional gateway includes a main channel optical switch, a backup channel optical switch and a main-backup channel switching optical switch; The main channel optical switch is used to switch the data transmission mode between the main data signal transmission channel and the access network; the backup channel optical switch is used to switch the data transmission mode between the backup data signal transmission channel and the access network; The main-backup channel switching optical switch is used to switch the data signal transmission backup channel and the data signal transmission backup channel.

18. The system according to claim 17, wherein: The data transmission mode includes a direct mode and an exchange mode; In the pass-through mode, the first optical data signal passes directly through the regional gateway and is not transmitted to the terminal device corresponding to the regional gateway; In the switching mode, the first optical data signal passes through the regional gateway and is transmitted to the terminal device corresponding to the regional gateway; the second optical data signal passes through the regional gateway and enters the backbone network.

19. A vehicle-mounted optical fiber communication method, characterized in that: The vehicle-mounted optical fiber communication system according to any one of claims 1 to 13 comprises: The main controller sends an optical control signal to the regional gateway through the control signal transmission channel, and sends a first optical data signal to the regional gateway through the data signal transmission channel; The regional gateway receives the optical control signal and the first optical data signal, receives the second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the data signal transmission channel.

20. A vehicle-mounted optical fiber communication method, characterized in that: The vehicle-mounted optical fiber communication system according to any one of claims 14 to 18 comprises: The main controller sends an optical control signal to the regional gateway through the control signal transmission main channel, and sends a first optical data signal to the regional gateway through the data signal transmission main channel; The regional gateway receives the optical control signal and the first optical data signal, receives a second optical data signal sent by the terminal device through the access network, and sends the second optical data signal to the main controller through the backbone network; In the event that a fault occurs in the main control signal transmission channel, the optical control signal is transmitted through the control signal transmission backup channel; and / or in the event that a fault occurs in the main data signal transmission channel, the first optical data signal and the second optical data signal are transmitted through the data signal transmission backup channel.

21. A vehicle, characterized in that: The vehicle comprises the on-vehicle optical fiber communication system according to any one of claims 1 to 13 or any one of claims 14 to 18.

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