Transmission bus, communication system and vehicle

Abstract

The invention provides a transmission bus, a communication system and a vehicle. The transmission bus comprises a first optical module, a first coupling optical splitter, N1 second optical modules, a second coupling optical splitter and N2 third optical modules. The first coupling optical splitter is respectively connected with the second coupling optical splitter, the first optical module and the N1 second optical modules, and the second coupling optical splitter is also respectively connected with the N2 third optical modules. By adopting the transmission bus, the communication rate and the communication bandwidth of the vehicle-mounted transmission bus are improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a transmission bus, a communication system, and a vehicle. Background Art

[0002] With the development of the automotive industry, the control of various automotive electronic systems has gradually shifted towards automation and intelligence, and automotive electronic systems have become increasingly complex. The on-vehicle transmission buses commonly used in existing vehicles include the Local Interconnect Network (LIN), the Controller Area Network (CAN), and automotive Ethernet. However, with the rapid development of automotive intelligent networking and autonomous driving, the number of electronic units is increasing, and the amount of information transmission is also increasing. The existing transmission buses can no longer meet the real-time communication and control requirements of various automotive electronic systems. Therefore, how to solve the problem of performance mismatch of existing on-vehicle transmission buses has become one of the current research hotspots. Summary of the Invention

[0003] Embodiments of this application provide a transmission bus, a communication system, and a vehicle. Using this transmission bus as the on-vehicle transmission bus can solve the problem of performance mismatch of existing on-vehicle transmission buses.

[0004] In a first aspect, embodiments of this application provide a transmission bus. The transmission bus includes a first optical module, a first coupling optical splitter, N1 second optical modules, a second coupling optical splitter, and N2 third optical modules. The first coupling optical splitter is respectively connected to the second coupling optical splitter, the first optical module, and the N1 second optical modules. The second coupling optical splitter is also respectively connected to the N2 third optical modules, where N1 and N2 are both positive integers greater than or equal to 1.

[0005] In embodiments of this application, the transmission bus is composed of a first optical module, a first coupling optical splitter, a second coupling optical splitter, N1 second optical modules, and N2 third optical modules. Due to the combination of the optical transmission architecture, compared with the existing transmission buses, the transmission bus provided by this application has a larger communication bandwidth and a higher communication rate. Applying this transmission bus to a vehicle can effectively solve the problem of insufficient performance of existing on-vehicle transmission buses and effectively improve the signal transmission quality of the on-vehicle communication network.

[0006] In combination with the first aspect, in a feasible implementation, the first optical module is configured to perform electro-optical conversion on the received first electrical signal to obtain a first optical signal, and send the first optical signal to the first coupling optical splitter, wherein the first electrical signal carries first data. The first coupling optical splitter is configured to send a second optical signal carrying the first data to the second coupling optical splitter according to the first optical signal, and send a third optical signal carrying the first data to the N1 second optical modules.

[0007] In combination with the first aspect, in a feasible implementation, the second coupling optical splitter is configured to send a fourth optical signal carrying the first data to the N2 third optical modules according to the second optical signal.

[0008] In combination with the first aspect, in a feasible implementation, each of the N1 second optical modules is configured to perform opto-electrical conversion on the received third optical signal to obtain a second electrical signal and output it, wherein the second electrical signal carries the first data, and / or each of the N2 third optical modules is configured to perform opto-electrical conversion on the received fourth optical signal to obtain a third electrical signal and output it, wherein the third electrical signal carries the first data.

[0009] In combination with the first aspect, in a feasible implementation, the first optical module is a small form-factor pluggable (SFP) optical module.

[0010] In combination with the first aspect, in a feasible implementation, the first optical module is configured to obtain the service bandwidth indication information included in the first electrical signal, and adjust the bandwidth of the first optical module to the target bandwidth indicated by the service bandwidth indication information according to the service bandwidth indication information.

[0011] In the above implementation, the first optical module can flexibly adjust its bandwidth according to the required service bandwidth to complete communication transmission, improving the applicability and practicality of the transmission bus.

[0012] In combination with the first aspect, in a feasible implementation, the first optical module is connected to a vehicle-mounted controller. The vehicle-mounted controller is configured to generate the first electrical signal and send the first electrical signal to the first optical module.

[0013] In combination with the first aspect, in a feasible implementation, the first optical module is connected to the vehicle-mounted controller through a data pre-processor. The vehicle-mounted controller is configured to generate a fourth electrical signal carrying second data and send the fourth electrical signal to the data pre-processor. The data pre-processor is configured to extract the second data from the fourth electrical signal, pre-process the second data to obtain the first data, and generate and send the first electrical signal carrying the first data to the first optical module.

[0014] In the above implementation, the data pre-processor can first pre-process the received data and then send it to the vehicle-mounted controller for analysis and processing, thereby reducing the load of the vehicle-mounted controller, improving the communication rate, and enhancing its service real-time performance and practicality.

[0015] In combination with the first aspect, in a feasible implementation, the data pre-processor is a field-programmable gate array (FPGA).

[0016] In combination with the first aspect, in a feasible implementation, the FPGA is connected to the first optical module through a serializer / deserializer (SERDES). The FPGA is further configured to perform communication protocol conversion on the first electrical signal to obtain a first electrical signal adapted to the SERDES, and send the first electrical signal adapted to the SERDES to the first optical module through the SERDES.

[0017] In combination with the first aspect, in a feasible implementation, the FPGA is further configured to receive a seventh electrical signal sent by the first optical module, perform communication protocol conversion on the seventh electrical signal to obtain an electrical signal adapted to the interface between the vehicle-mounted controller and the FPGA, and send the seventh electrical signal to the vehicle-mounted controller.

[0018] In combination with the first aspect, in a feasible implementation, the second optical module and / or the third optical module is a high-speed optical transceiver module.

[0019] In the above implementation, the optical module being a high-speed optical transceiver module can improve its communication rate.

[0020] In combination with the first aspect, in a feasible implementation, each second optical module is connected to at least one first vehicle-mounted device, and each third optical module is connected to at least one second vehicle-mounted device. The first vehicle-mounted device is configured to receive a second electrical signal to obtain the first data. The second vehicle-mounted device is configured to receive a third electrical signal to obtain the first data.

[0021] In combination with the first aspect, in a feasible implementation, the communication bandwidth of the second optical module matches the service bandwidth required by the first vehicle-mounted device connected to the second optical module. The communication bandwidth of the third optical module matches the service bandwidth required by the second vehicle-mounted device connected to the third optical module.

[0022] In the above implementation, the communication bandwidth of the optical module matches the service bandwidth required by the vehicle-mounted device it is connected to, which can improve the communication rate of the transmission bus and enhance its applicability and practicality.

[0023] In combination with the first aspect, in a feasible implementation, the transmission bus further includes a third coupling optical splitter and N3 fourth optical modules. The third coupling optical splitter is respectively connected to the second coupling optical splitter and the N3 fourth optical modules, where N3 is a positive integer greater than or equal to 1. The second coupling optical splitter is further configured to send a fifth optical signal carrying the first data to the third coupling optical splitter according to the second optical signal. The third coupling optical splitter is configured to send a sixth optical signal carrying the first data to the N3 fourth optical modules according to the fifth optical signal. Each of the N3 fourth optical modules is configured to perform optoelectronic conversion on the received sixth optical signal to obtain a fifth electrical signal and output it, where the fifth electrical signal carries the first data.

[0024] In a second aspect, an embodiment of the present application provides a communication system, which includes the transmission bus as described in the first aspect above to achieve the beneficial effects of the transmission bus provided in the first aspect.

[0025] In a third aspect, an embodiment of the present application provides a vehicle, which includes the transmission bus as described in the first aspect above, or the communication system as described in the second aspect above, to achieve the beneficial effects of the transmission bus provided in the first aspect.

[0026] By implementing the embodiments of the present invention, the transmission bus is composed of at least two optical modules and at least two coupling optical splitters. Due to the combination of the optical transmission architecture, compared with the existing transmission bus, the transmission bus provided in the present application has a larger communication bandwidth and a higher communication rate. Applying this transmission bus to a vehicle can effectively solve the problem of insufficient performance of the existing vehicle-mounted transmission bus and effectively improve the signal transmission quality of the vehicle-mounted communication network. Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of a transmission bus provided by an embodiment of the present application;

[0029] Figure 2 is another schematic structural diagram of a transmission bus provided by an embodiment of the present application;

[0030] Figure 3 is another schematic structural diagram of a transmission bus provided by an embodiment of the present application;

[0031] Figure 4 is another schematic structural diagram of a transmission bus provided by an embodiment of the present application;

[0032] Figure 5 is another schematic structural diagram of a transmission bus provided by an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

[0034] Figure 7 is a schematic structural diagram of a vehicle provided by an embodiment of the present application. Detailed implementation manners

[0035] To enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0036] The in-vehicle transmission buses commonly used in existing automobiles include Local Interconnect Network (LIN), Controller Area Network (CAN), and in-vehicle Ethernet. However, with the rapid development of automotive intelligent networking and autonomous driving, there are more and more electronic units and the amount of information transmission is also increasing. The existing transmission buses can no longer meet the real-time communication and control requirements of various automotive electronic systems. Therefore, the technical problem to be solved by the present application is: how to solve the problem of mismatched performance of existing in-vehicle transmission buses.

[0037] To solve the above problems, the present application provides a transmission bus based on an optical communication architecture. The transmission bus may include at least two optical modules and at least two coupling splitters. Adopting this optical communication architecture improves both the communication rate and communication bandwidth of the transmission bus. Applying this transmission bus to a vehicle can solve the problem of insufficient performance of the existing in-vehicle transmission bus, that is, it can improve the communication rate and communication bandwidth of the in-vehicle transmission bus.

[0038] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a transmission bus provided by an embodiment of the present application. As Figure 1 shown, the transmission bus 10 may include a first optical module 11, a first coupling splitter 12, N1 second optical modules, a second coupling splitter 13, and N2 third optical modules. Among them, the above N1 second optical modules may specifically include second optical module 1, second optical module 2,..., second optical module N1. The above N2 third optical modules may specifically include third optical module 1, third optical module 2,..., third optical module N2. Here, both N1 and N2 are positive integers greater than or equal to 1.

[0039] The first coupling splitter 12 may be respectively connected to the second coupling splitter 13, the first optical module 11, and the N1 second optical modules. The second coupling splitter 13 may also be respectively connected to the N2 third optical modules.

[0040] In the embodiment of the present application, the transmission bus 10 is composed of a first optical module 11, a first coupling splitter 12, a second coupling splitter 13, N1 second optical modules, and N2 third optical modules. Due to the combination of the optical transmission architecture, compared with the existing transmission bus, the transmission bus provided by the present application has a larger communication bandwidth and a higher communication rate. Applying the transmission bus 10 to a vehicle can effectively solve the problem of insufficient performance of the existing in-vehicle transmission bus and effectively improve the signal transmission quality of the in-vehicle communication network.

[0041] Optionally, please continue to refer to Figure 1, in actual work, the first optical module 11 can be used to perform optoelectronic conversion on the received first electrical signal to obtain a first optical signal, and send the first optical signal to the first coupling and splitting optical device 12. Among them, the first electrical signal can carry first data. The first coupling and splitting optical device 12 can be used to send a second optical signal carrying the first data to the second coupling and splitting optical device 13 according to the first optical signal, and send a third optical signal carrying the first data to N1 second optical modules. Or rather, the first coupling and splitting optical device 12 can be used to decompose the first optical signal into a second optical signal and N1 third optical signals, send the second optical signal to the second coupling and splitting optical device 13, and send the N1 third optical signals to the N1 second optical modules respectively. It should be noted that in the embodiments of the present application, one second optical module can only receive one third optical signal.

[0042] Optionally, the second coupling and splitting optical device 13 can be used to send a fourth optical signal carrying the first data to N2 third optical modules according to the second optical signal. Or rather, the second coupling and splitting optical device 13 can be used to decompose the second optical signal to obtain N2 fourth optical signals, and send these N2 fourth optical signals to the N2 third optical modules respectively. It should be noted that in the embodiments of the application, one third optical module can only receive one fourth optical signal.

[0043] Optionally, the first optical module 11 can be connected to the first coupling and splitting optical device 12 through an LC optical connection port to transmit optical signals.

[0044] In some feasible implementation manners, each of the N1 second optical modules can be used to perform optoelectronic conversion on the received third optical signal to obtain a second electrical signal, and output the second electrical signal to the electronic device or equipment connected thereto. Among them, the second electrical signal can carry first data. It should be understood that the electronic device or equipment connected to the second optical module is the electronic device or equipment mounted on the transmission bus 10.

[0045] Exemplarily, here, the second optical module 1 among the N1 second optical modules is taken as an example to illustrate the above process. The second optical module 1 can receive a third optical signal S1 sent by the first coupling and splitting optical device 12. Further, the second optical module 1 can perform optoelectronic conversion on the third optical signal S1 to obtain a second electrical signal, and output the second electrical signal to the electronic device or equipment connected to the second optical module 1.

[0046] Each of the N2 third optical modules can be used to perform optoelectronic conversion on the received fourth optical signal to obtain a third electrical signal, and output the third electrical signal to the electronic device or equipment connected thereto. Among them, the third electrical signal can carry first data. Similarly, the electronic device or equipment connected to the third optical module is also the electronic device or equipment mounted on the transmission bus 10.

[0047] Exemplarily, the third optical module 1 among the N2 third optical modules is taken as an example to illustrate the above process. The third optical module 1 can receive a fourth optical signal S2 sent by the second coupling optical splitter 13. Further, the third optical module 1 can perform optoelectronic conversion on the fourth optical signal S2 to obtain a third electrical signal, and output the third electrical signal to the electronic device or equipment connected to the third optical module 1.

[0048] It should be noted that in actual implementation, the electrical parameters of the above first electrical signal, second electrical signal, and third electrical signal may be the same or different, and the present application does not make specific limitations on this.

[0049] It should be understood that in the embodiments of the present application, the process of data being transmitted from the first optical module 11, the first coupling optical splitter 12, the second optical module, the second coupling optical splitter 13, and the third optical module to the electronic device or equipment mounted on the transmission bus 10 can be referred to as data downlink. The process of data being transmitted from the electronic device or equipment mounted on the transmission bus 10, the second optical module, the third optical module, the first coupling optical splitter 12, and the second coupling optical splitter 13 to the first optical module 11 can be referred to as data uplink.

[0050] The foregoing is a description of data downlink. The following will describe data uplink based on Figure 1 the structure shown.

[0051] In specific implementation, each of the N2 third optical modules can be used to perform optoelectronic conversion on the received electrical signal sent by the electronic device or equipment connected thereto to obtain an optical signal, and send the optical signal to the second coupling optical splitter 13. Among them, the electrical signal sent by the electronic device or equipment connected to each third optical module can carry third data. The electronic device or equipment connected to the third optical module is also an electronic device or equipment mounted on the transmission bus 10.

[0052] Exemplarily, the third optical module 1 among the N2 third optical modules is taken as an example to illustrate the above process. The third optical module 1 can receive the electrical signal sent by the electronic device or equipment connected thereto. Further, the third optical module 1 can perform optoelectronic conversion on the electrical signal to obtain an optical signal S3, and send the optical signal S3 to the second coupling optical splitter 13.

[0053] The second coupling optical splitter 13 can be used to couple the optical signals sent by the N2 third optical modules, to obtain a new optical signal and send it to the first coupling optical splitter 12.

[0054] Each of the N1 second optical modules can be used to perform optoelectronic conversion on the received electrical signal sent by the electronic device or equipment it is connected to, so as to obtain an optical signal, and send the optical signal to the first coupling optical splitter 12. Among them, the electrical signal sent by the electronic device or equipment connected to each second optical module can carry the fourth data. The electronic device or equipment connected to the second optical module is also an electronic device or equipment mounted on the transmission bus 10.

[0055] Exemplarily, the second optical module 1 among the N1 second optical modules is taken as an example to illustrate the above process. The second optical module 1 can receive the electrical signal sent by the electronic device or equipment it is connected to. Further, the second optical module 1 can perform optoelectronic conversion on the electrical signal to obtain an optical signal S4, and send the optical signal S4 to the first coupling optical splitter 12.

[0056] The first coupling optical splitter 12 can be used to couple the optical signal sent by the second coupling optical splitter 13 and the optical signals sent by the N1 second optical modules to obtain a new optical signal, and send this new optical signal to the first optical module 11.

[0057] In an alternative embodiment, the first optical module 11 can be an SFP (Small Form Pluggable) optical module. The first optical module 11 can also be a Gigabit Interface Converter (GBIC), an SPF+ (Small Form-factor Pluggables), etc. The embodiments of the present application do not specifically limit the implementation form of the first optical module 11.

[0058] Optionally, when the first optical module 11 is an SFP optical module, the SFP optical module can be used to obtain the service bandwidth indication information included in the first electrical signal, and can adjust the bandwidth of the SFP optical module to the target bandwidth indicated by the service bandwidth indication information according to the service bandwidth indication information.

[0059] In the above implementation, the first optical module 11 can flexibly adjust its bandwidth according to the required service bandwidth to complete communication transmission, improving the applicability and practicality of the transmission bus 10.

[0060] It should be understood that the SFP optical module is only an alternative solution for the first optical module 11, and the first optical module 11 can also be other types of optical components or devices capable of adjusting the communication bandwidth. The embodiments of the present application do not specifically limit the implementation form of the first optical module 11.

[0061] In an alternative embodiment, please refer to Figure 2 , Figure 2This is another schematic structural diagram of a transmission bus provided by an embodiment of the present application. As Figure 2 shown, each of the N1 second optical modules can be connected to at least one first vehicle-mounted device, and each of the N2 third optical modules can be connected to at least one second vehicle-mounted device. It should be understood that Figure 2 the example shows that each second optical module is connected to one first vehicle-mounted device, and each third optical module is connected to one second vehicle-mounted device. It should also be understood that at this time, the transmission bus 10 can be a vehicle-mounted transmission bus.

[0062] It should be added that the vehicle-mounted device connected to the optical module can be the electronic device or equipment connected to the optical module described above.

[0063] In the embodiment of the present application, the vehicle-mounted device can be any form of electronic device or equipment capable of communication, such as a camera, a vehicle-mounted display screen, a lidar, a speaker, a vehicle-mounted navigator, a driving recorder, a sensor, etc. The embodiment of the present application does not specifically limit the implementation form of the vehicle-mounted device.

[0064] In specific implementation, in the case of data downlink, the first vehicle-mounted device provided by the present application can be used to receive the second electrical signal sent by the second optical module connected to it to obtain the first data carried by it. Exemplarily, assume that the second optical module 1 is connected to a first vehicle-mounted device, and the first vehicle-mounted device is a vehicle-mounted display screen, and the second electrical signal output to the first vehicle-mounted device carries the image data to be displayed. After receiving the second electrical signal, the vehicle-mounted display screen can extract the image data from the second electrical signal and display the image data.

[0065] The second vehicle-mounted device provided by the present application can be used to receive the third electrical signal sent by the third optical module connected to it to obtain the first data carried by it. Exemplarily, assume that the third optical module 1 is connected to a second vehicle-mounted device, and the second vehicle-mounted device is a vehicle-mounted camera, and the third electrical signal output to the second vehicle-mounted device carries the shooting instruction data. After receiving the above third electrical signal, the vehicle-mounted camera can extract the shooting instruction data and perform shooting based on the shooting instruction data.

[0066] Furthermore, both the first vehicle-mounted device and the second vehicle-mounted device can perform corresponding operations according to the first data.

[0067] It should be noted that since the processing process of the electrical signals received by each vehicle-mounted device connected to the optical module is similar, the vehicle-mounted device will give a unified description of this processing process here. After receiving the electrical signal sent by the optical module connected to it, the controller of the vehicle-mounted device itself can analyze and process the signal to obtain the data carried by the electrical signal. Further, the vehicle-mounted device can perform corresponding operations according to the data carried by the signal.

[0068] Optionally, the first coupling optical splitter 12 can send a second electrical signal to each first vehicle-mounted device connected to it through N1 second optical modules. When each first vehicle-mounted device receives the second electrical signal, each first vehicle-mounted device can determine whether the second electrical signal is the second electrical signal sent to itself. If it is determined that the second electrical signal is the signal sent to itself, the first data carried therein can be obtained according to the signal to perform relevant operations. If it is determined that the second electrical signal is not the signal sent to itself, the second electrical signal can be cleared.

[0069] Exemplarily, assume that the first vehicle-mounted device connected to the second optical module 1 is a vehicle-mounted display screen, and the first vehicle-mounted device connected to the second optical module 1 is a camera. When the first coupling optical splitter 12 sends a second electrical signal to the camera through the second optical module, both the vehicle-mounted display screen and the camera can receive the second electrical signal sent by the first coupling optical splitter 12. Then, the vehicle-mounted display screen can determine that the second electrical signal is not the electrical signal sent to itself, and further can clear the second electrical signal. The camera can determine that the second electrical signal is the electrical signal sent to itself, and further can perform relevant operations according to the first data carried by the second electrical signal.

[0070] Optionally, the second coupling optical splitter 13 sends a third electrical signal to each second vehicle-mounted device connected to it through N2 third optical modules, and the process of each second vehicle-mounted device receiving and processing the third electrical signal is similar to the process of the first coupling optical splitter 12 sending a second electrical signal to each first vehicle-mounted device connected to it through N1 second optical modules and each first vehicle-mounted device receiving and processing the second electrical signal, which will not be elaborated here.

[0071] The foregoing is a description of data downlink. Next, data uplink will be described based on Figure 2 the structure shown.

[0072] In a specific implementation, the first vehicle-mounted device provided by this application can be used to send an electrical signal to a second optical module connected thereto to transmit fourth data. Exemplarily, assume that a first vehicle-mounted device is connected to a second optical module 1, and this first vehicle-mounted device is a vehicle-mounted display screen. The electrical signal output by the first vehicle-mounted device carries instruction data for acquiring an image. The vehicle-mounted display screen can send an electrical signal carrying the instruction data for acquiring an image to the second optical module 1.

[0073] The second vehicle-mounted device provided by this application can be used to send an electrical signal to a third optical module connected thereto to transmit third data. Exemplarily, assume that a second vehicle-mounted device is connected to a third optical module 1, and this second vehicle-mounted device is a vehicle-mounted camera. The electrical signal output by the second vehicle-mounted device carries image data captured. The vehicle-mounted camera can send an electrical signal carrying the captured image data to the third optical module 1.

[0074] In an alternative implementation, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another transmission bus provided by an embodiment of this application. As Figure 3 shown, the first optical module 11 can be connected to the vehicle-mounted controller 14. It can also be understood that the transmission bus 10 is connected to the vehicle-mounted controller 14.

[0075] In a specific implementation, the vehicle-mounted controller 14 can be used to generate a first electrical signal carrying target data and send the first electrical signal to the first optical module 11.

[0076] Optionally, the vehicle-mounted controller 14 can receive a control instruction generated by a user operating the vehicle-mounted central control screen. Here, the control instruction is used to instruct the vehicle-mounted controller 14 to generate the above-mentioned first electrical signal carrying the first data. Further, the vehicle-mounted controller 14 can generate a first electrical signal carrying the first data according to the control instruction and send the first electrical signal to the first optical module 11 to complete data transmission.

[0077] Exemplarily, the vehicle-mounted controller 14 can receive a control instruction for a user to operate the vehicle-mounted central control screen to obtain the current video recording of the vehicle-mounted camera. Further, the vehicle-mounted controller 14 can generate a first electrical signal carrying the first data based on the control instruction and send the first electrical signal to the first optical module 11. Then, the first optical module 11 can perform optoelectronic conversion according to the first electrical signal to obtain a first optical signal, and further send the first optical signal to the optical module connected to the vehicle-mounted camera through a coupling optical splitter to perform optoelectronic conversion to obtain a second electrical signal and send it to the vehicle-mounted camera. Further, the vehicle-mounted camera can obtain the first data carried by the second electrical signal to send the current video recording captured by the vehicle-mounted camera to the vehicle-mounted controller 14.

[0078] In an alternative implementation, please refer toFigure 4 , Figure 4 is another schematic diagram of the transmission bus provided by the embodiments of the present application. As Figure 4 shown, the first optical module 11 can be connected to the vehicle-mounted controller 14 through the data pre-processor 15. It can also be understood that the transmission bus 10 is connected to the vehicle-mounted controller 14 through the data pre-processor 15.

[0079] In a specific implementation, in the case of data downlink, the vehicle-mounted controller 14 can be used to generate a fourth electrical signal carrying the second data, and send the fourth electrical signal to the data pre-processor 15. The data pre-processor 15 can be used to extract the second data carried in the fourth electrical signal, and preprocess the second data to obtain the first data. Further, the data pre-processor 15 can generate a first electrical signal carrying the first data according to the first data, and send the first electrical signal to the first optical module 11 to complete data transmission.

[0080] It should be noted that the preprocessing of data refers to some processing of data before the main processing, such as data cleaning, data integration, data conversion, and data reduction and other technologies.

[0081] Optionally, in the case of data uplink, the data pre-processor 15 can be used to receive a seventh electrical signal carrying the third data sent by the first optical module 11, and extract the third data carried in the seventh electrical signal. Further, the data pre-processor 15 can preprocess the third data to obtain the fourth data, and generate an eighth electrical signal carrying the fourth data. Further, the data pre-processor 15 can send the eighth electrical signal to the vehicle-mounted controller 14. The vehicle-mounted controller 14 can be used to extract the fourth data carried in the eighth electrical signal, and further perform processing such as analysis and calculation on the fourth data.

[0082] Exemplarily, assuming that the vehicle-mounted device is a vehicle-mounted camera, in the case where the vehicle-mounted camera sends an image signal to the vehicle-mounted controller 14, the data pre-processor 15 can receive a seventh electrical signal carrying the original image data sent by the first optical module 11. Then, it can extract the original image data carried therein, and preprocess the original image data such as image processing to obtain the image data after image processing. Further, the data pre-processor 15 can generate an eighth electrical signal carrying the image data after image processing, and send the eighth electrical signal to the vehicle-mounted controller 14. The vehicle-mounted controller 14 can be used to extract the image data after image processing carried in the eighth electrical signal, and further perform processing such as analysis and extraction on the image data after image processing to obtain image information.

[0083] Optionally, after the vehicle-mounted controller 14 analyzes and processes the fourth data, etc., the vehicle-mounted controller 14 can generate an electrical signal carrying the corresponding data again and send it to the data pre-processor 15. Further, the process of the data pre-processor 15 processing the electrical signal can refer to the process of the data pre-processor 15 processing the electrical signal described above, and will not be elaborated here.

[0084] In the above implementation, the data pre-processor 15 can first pre-process the received data and then send it to the vehicle-mounted controller 14 for analysis and processing, thereby reducing the load of the vehicle-mounted controller 14, improving the communication rate, and enhancing its service real-time performance and practicality.

[0085] In an alternative embodiment, the data pre-processor 15 can be an FPGA (Field Programmable Gate Array) or a DSP (Digital Signal Processor). The present application embodiment does not specifically limit the implementation form of the data pre-processor 15.

[0086] Optionally, when the data pre-processor 15 is an FPGA, the FPGA can be connected to the first optical module 11 through SERDES (Serializer / Deserializer).

[0087] Optionally, during data downlink, the FPGA can be used to perform communication protocol conversion on the received first electrical signal sent by the vehicle-mounted controller 14 to obtain a first electrical signal adapted to SERDES, and further send the first electrical signal adapted to SERDES to the first optical module 11 through SERDES.

[0088] Optionally, during data uplink, the FPGA can also be used to perform communication protocol conversion on the received seventh electrical signal sent by the first optical module 11 to obtain a seventh electrical signal adapted to the interface protocol between the vehicle-mounted controller 14 and the FPGA 15, and further send the seventh electrical signal to the vehicle-mounted controller 14.

[0089] In an alternative embodiment, please refer to Figure 5 , Figure 5 which is a schematic structural diagram of another transmission bus provided by the embodiments of the present application. As Figure 5 shown, the transmission bus 10 may further include a third coupling optical splitter 16 and N3 fourth optical modules. The third coupling optical splitter 16 can be respectively connected to the second coupling optical splitter 13 and N3 fourth optical modules. Exemplarily, the N3 fourth optical modules can be the fourth optical module 1, the fourth optical module 2,..., the fourth optical module N3. Here, N3 is a positive integer greater than or equal to 1.

[0090] In a specific implementation, the second coupling optical splitter 13 can also be used to send a fifth optical signal carrying the first data to the third coupling optical splitter 16 according to the second optical signal. The third coupling optical splitter 16 can be used to send a sixth optical signal carrying the first data to N3 fourth optical modules according to the fifth optical signal. Or rather, the second coupling optical splitter 13 can also be used to decompose the fifth optical signal based on the second optical signal and send the fifth optical signal to the third coupling optical splitter 16. The third coupling optical splitter 16 can be used to decompose the fifth optical signal into N3 sixth optical signals and send these N3 sixth optical signals to N3 fourth optical modules respectively. It should be noted that each fourth optical module can only receive one sixth optical signal.

[0091] Each of the N3 fourth optical modules can be used to perform optoelectronic conversion on the received sixth optical signal to obtain a fifth electrical signal and output the fifth electrical signal to the electronic device or equipment connected thereto. Among them, the fifth electrical signal can carry the first data.

[0092] Exemplarily, the fourth optical module 1 among the N3 fourth optical modules is taken as an example to illustrate the above process. The fourth optical module 1 can receive the sixth optical signal sent by the third coupling optical splitter 16. Further, the sixth optical signal can be subjected to optoelectronic conversion to obtain a fifth electrical signal, and the fifth electrical signal is output to the electronic device or equipment connected to the fourth optical module 1.

[0093] The foregoing is a description for data downlink. The data uplink will be described below based on Figure 5 the structure shown.

[0094] In a specific implementation, each of the N3 fourth optical modules can be used to perform optoelectronic conversion on the received electrical signal sent by the electronic device or equipment connected thereto to obtain an optical signal and send the signal to the third coupling optical splitter 16. Among them, the electrical signal sent by the electronic device or equipment connected to each fourth optical module can carry the fifth data. The electronic device or equipment connected to the fourth optical module is also an electronic device or equipment mounted on the transmission bus 10.

[0095] Exemplarily, the fourth optical module 1 among the N3 fourth optical modules is taken as an example to illustrate the above process. The fourth optical module 1 can receive the electrical signal sent by the electronic device or equipment connected thereto. Further, the fourth optical module 1 can perform optoelectronic conversion on the electrical signal to obtain an optical signal S5 and send the optical signal S5 to the third coupling optical splitter 16.

[0096] The third coupling optical splitter 16 can be used to couple the optical signals sent by the N3 fourth optical modules and obtain a new optical signal and send it to the second coupling optical splitter 13.

[0097] The second coupling optical splitter 13 can be used to obtain a new optical signal based on the optical signal sent by the third coupling optical splitter 16 and the optical signals sent by N2 third optical modules, and send this new optical signal to the first coupling optical splitter 12.

[0098] Optionally, the second optical module, the third optical module, and the fourth optical module can all be high-speed optical transceiver modules. For example, high-speed CAN optical transceivers, 10 Gigabit fiber optic transceivers, etc. The embodiments of the present application do not specifically limit the implementation forms of the second optical module, the third optical module, and the fourth optical module.

[0099] In the above implementation, the second optical module, the third optical module, and the fourth optical module are high-speed optical transceiver modules, which can improve their communication rates.

[0100] Optionally, the communication bandwidth of the second optical module can match the service bandwidth required by the first vehicle-mounted device connected to the second optical module. The communication bandwidth of the third optical module can match the service bandwidth required by the second vehicle-mounted device connected to the third optical module. The communication bandwidth of the fourth optical module can match the service bandwidth required by the vehicle-mounted device connected to the fourth optical module.

[0101] It should be noted that the communication bandwidth of the optical module matching the service bandwidth of the vehicle-mounted device connected to it means that the communication bandwidth of the optical module adapts to the service bandwidth required by the vehicle-mounted device connected to it. For example, when the vehicle-mounted device is a camera, assuming that its transmission service requires a large bandwidth, the communication bandwidth of the optical module connected to it can be relatively large. Another example is that when the vehicle-mounted device is a vehicle-mounted display screen, assuming that its transmission service requires a relatively small bandwidth, the communication bandwidth of the optical module connected to it can be relatively small.

[0102] In the above implementation, the communication bandwidth of the optical module matching the service bandwidth required by the vehicle-mounted device connected to it can improve the communication rate of the transmission bus 10 and enhance its applicability and practicality.

[0103] Optionally, the communication bandwidths of the optical modules can also be unified, so that the forms of the optical modules can be unified, which is convenient for design and production.

[0104] It should be noted here that due to the characteristics of the optical transmission reversibility of the coupling optical splitter and the high mutual isolation of the split light, the optical signals sent by the second optical module, the third optical module, and the fourth optical module through the optical splitter connected to them can only be transmitted to the first optical module 11 through the transmission bus 10 to receive the optical signal.

[0105] It should be noted that the foregoing description mentions the case where three coupled optical splitters can be connected in series in the transmission bus 10. In actual implementation, four or more coupled optical splitters can also be connected in series in the transmission bus 10, and the number of coupled optical splitters connected in series in the transmission bus 10 can be determined according to actual service requirements. Correspondingly, the transmission bus 10 can also include multiple optical modules such as a fifth optical module and a sixth optical module. The embodiments of the present application do not specifically limit the number of coupled optical splitters and optical modules.

[0106] Optionally, optical modules such as the second optical module, the third optical module, and the fourth optical module can be respectively connected to their corresponding coupled optical splitters through SC optical connection ports.

[0107] Optionally, multiple optical modules such as the fifth optical module and the sixth optical module can be high-speed optical transceiver modules, thereby improving the communication rate.

[0108] It should be supplemented that the splitting ratio of the coupled optical splitter can be determined by the number of electronic devices or equipment connected thereto and the service requirements corresponding to each electronic device or equipment. The embodiments of the present application do not specifically limit this.

[0109] In the embodiments of the present application, the first optical module 11, the first coupled optical splitter 12, N1 second optical modules, the second coupled optical splitter 13, and N2 third optical modules 1 included in the transmission bus 10 can be optically connected through waveguides. Optionally, the waveguide can be an optical fiber, which can be used to transmit the first optical signal. Exemplarily, the optical fiber can be a special optoelectronic composite cable, which can provide both communication functions and power supply functions. The optical fiber can be a single-mode optical fiber, a multi-mode optical fiber, a plastic optical fiber, etc. The embodiments of the present application do not specifically limit the implementation form of the waveguide.

[0110] In the embodiments of the present application, the vehicle-mounted device and the optical module, between the first optical module 11 and the vehicle-mounted controller 14, between the first optical module 11 and the data pre-processor 15, and between the data pre-processor 15 and the vehicle-mounted controller 14 can be electrically connected through lines. Optionally, the line can be a circuit integrated on a circuit board or a communication cable. The embodiments of the present application do not specifically limit the implementation form of the line.

[0111] The embodiments of the present application also provide a communication system. Please refer to Figure 6 , Figure 6 is a schematic structural diagram of a communication system provided by the embodiments of the present application. As Figure 6 shown, the communication system 60 can include the transmission bus 10 described in the above embodiments.

[0112] The embodiments of the present application also provide a vehicle. Please refer to Figure 7 , Figure 7 is a schematic structural diagram of a vehicle provided by the embodiments of the present application. AsFigure 7 As shown, the vehicle 70 may include the transmission bus 10 described in the above embodiments, or the communication system 60 described in the above embodiments. The vehicle 70 may include the in-vehicle devices described above, and may also include multiple wheels, a seat, an in-vehicle power supply, electrical devices, etc.

[0113] It should be noted that the transmission bus 10 provided in this application is not only applicable to the vehicle 70, but also applicable to other scenarios that require a transmission bus and have relatively high performance requirements for the transmission bus, such as the data transmission scenario in a computer system. The application scenarios of the transmission bus 10 in the embodiments of this application are not specifically limited.

[0114] It should be noted that for any of the above embodiments of the transmission bus, communication system, and vehicle, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, some of its steps can be in other sequences or performed simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to this application.

[0115] The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps is not limited to the listed steps, but optionally further includes steps not listed, or optionally further includes other steps inherent to these processes, methods, products, or devices.

[0116] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0117] Although this application has been described in connection with various embodiments herein, however, in the process of implementing the claimed application, those skilled in the art can understand and achieve other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality of cases. Certain measures are recited in mutually different dependent claims, but this does not indicate that these measures cannot be combined to produce good results.

[0118] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principles and implementation manners of a transmission bus, a communication system, and a vehicle of the present application. The description of the above embodiments is intended to help understand the method and core idea of the present application. At the same time, for those of ordinary skill in the art, based on the idea of a transmission bus, a communication system, and a vehicle of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present application.

[0119] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes computer storage media and communication media, where the communication media includes any medium that facilitates the transmission of a computer program from one place to another. The storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0120] The specific implementation manners described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above is only the specific implementation manners of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present application shall be included in the protection scope of the present application.

Claims

1. A transmission bus, characterized in that, the transmission bus includes a first optical module, a first coupling optical splitter, N1 second optical modules, a second coupling optical splitter, and N2 third optical modules. The first coupling optical splitter is respectively connected to the second coupling optical splitter, the first optical module, and the N1 second optical modules. The second coupling optical splitter is also respectively connected to the N2 third optical modules, where N1 and N2 are both positive integers greater than or equal to 1.

2. The transmission bus according to claim 1, characterized in that, the first optical module is configured to perform electro-optical conversion on the received first electrical signal to obtain a first optical signal, and send the first optical signal to the first coupling optical splitter, where the first electrical signal carries first data; the first coupling optical splitter is configured to send a second optical signal carrying the first data to the second coupling optical splitter and send a third optical signal carrying the first data to the N1 second optical modules according to the first optical signal.

3. The transmission bus according to claim 2, characterized in that, the second coupling optical splitter is configured to send a fourth optical signal carrying the first data to the N2 third optical modules according to the second optical signal.

4. The transmission bus according to claim 3, characterized in that, each of the N1 second optical modules is configured to perform opto-electrical conversion on the received third optical signal to obtain a second electrical signal and output it, where the second electrical signal carries the first data; and / or, each of the N2 third optical modules is configured to perform opto-electrical conversion on the received fourth optical signal to obtain a third electrical signal and output it, where the third electrical signal carries the first data.

5. The transmission bus according to any one of claims 1-4, characterized in that, the first optical module is a small form-factor pluggable (SFP) optical module.

6. The transmission bus according to claim 5, characterized in that, the first optical module is further configured to obtain service bandwidth indication information included in the first electrical signal, and adjust the bandwidth of the first optical module to a target bandwidth indicated by the service bandwidth indication information according to the service bandwidth indication information.

7. The transmission bus according to claim 5 or 6, characterized in that, the first optical module is connected to a vehicle-mounted controller; the vehicle-mounted controller is configured to generate the first electrical signal and send the first electrical signal to the first optical module.

8. The transmission bus according to claim 5 or 6, characterized in that, the first optical module is connected to the vehicle-mounted controller through a data pre-processor; the vehicle-mounted controller is configured to generate a fourth electrical signal carrying second data and send the fourth electrical signal to the data pre-processor; the data pre-processor is configured to extract the second data from the fourth electrical signal, pre-process the second data to obtain the first data, and generate and send the first electrical signal carrying the first data to the first optical module.

9. The transmission bus according to claim 8, It is characterized in that the data preprocessor is a field programmable gate array (FPGA).

10. The transmission bus according to claim 9, It is characterized in that the FPGA is connected to the first optical module through a serializer / deserializer (SERDES); the FPGA is further configured to perform communication protocol conversion on the first electrical signal to obtain a first electrical signal adapted to the SERDES, and send the first electrical signal adapted to the SERDES to the first optical module through the SERDES.

11. The transmission bus according to any one of claims 1-4, It is characterized in that the second optical module and / or the third optical module is a high-speed optical transceiver module.

12. The transmission bus according to claim 7, It is characterized in that each of the second optical modules is connected to at least one first vehicle-mounted device, and each of the third optical modules is connected to at least one second vehicle-mounted device; the first vehicle-mounted device is configured to receive a second electrical signal to obtain the first data; the second vehicle-mounted device is configured to receive a third electrical signal to obtain the first data.

13. The transmission bus according to claim 12, It is characterized in that the communication bandwidth of the second optical module matches the service bandwidth required by the first vehicle-mounted device connected to the second optical module; the communication bandwidth of the third optical module matches the service bandwidth required by the second vehicle-mounted device connected to the third optical module.

14. The transmission bus according to claim 12 or 13, It is characterized in that the transmission bus further includes a third coupling optical splitter and N3 fourth optical modules, the third coupling optical splitter is respectively connected to the second coupling optical splitter and the N3 fourth optical modules, where N3 is a positive integer greater than or equal to 1; the second coupling optical splitter is further configured to send a fifth optical signal carrying the first data to the third coupling optical splitter according to the second optical signal; the third coupling optical splitter is configured to send a sixth optical signal carrying the first data to the N3 fourth optical modules according to the fifth optical signal; each of the N3 fourth optical modules is configured to perform optoelectronic conversion on the received sixth optical signal to obtain a fifth electrical signal and output it, where the fifth electrical signal carries the first data.

15. A communication system, It is characterized in that it includes the transmission bus according to any one of claims 1-14.

16. A vehicle, It is characterized in that the vehicle includes the transmission bus according to any one of claims 1-14, or the communication system according to claim 15.

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