A vehicle-mounted communication system

Abstract

This invention relates to the field of communication technology, specifically to an in-vehicle communication system. It includes an OLT optoelectronic module, an optoelectronic composite cable, and an OUT optoelectronic module. The OLT optoelectronic module includes a first optical circuit board, a control circuit board, and a first interface. The first optical circuit board has a first transmitting end and a first receiving end, and is electrically connected to the control circuit board and the first interface. The OUT optoelectronic module includes a second optical circuit board, a second interface, and an in-vehicle camera. The second optical circuit board has a second transmitting end and a second receiving end, and the second interface and the in-vehicle camera are both electrically connected to the second optical circuit board. The two ends of the optoelectronic composite cable are respectively connected to the first interface and the second interface. The signal transmission of this in-vehicle communication system adopts an "electric-optical-electric" conversion transmission method. Compared with pure electric signal transmission, optical signals as a transmission medium have the advantage of high speed, which can significantly improve the system response speed and image transmission stability.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a vehicle-mounted communication system. Background Technology

[0002] With the rapid development of intelligent vehicles and in-vehicle infotainment systems, the number of in-vehicle cameras is constantly increasing and the image resolution is continuously improving, which puts forward higher requirements for the transmission rate of in-vehicle communication systems.

[0003] Currently, the signal transmission between vehicle cameras and vehicle screens mostly adopts the traditional copper cable electrical signal transmission scheme (such as coaxial cable). Although it can meet the basic transmission requirements, it still has the following shortcomings in practical applications: First, the transmission rate is prone to delay or stuttering; second, the copper cable harness is large in size, which is not conducive to the layout of the whole vehicle. Summary of the Invention

[0004] This invention provides a vehicle-mounted communication system to solve the problems of slow transmission rate and large wiring harness size in existing vehicle-mounted communication systems, which are not conducive to layout.

[0005] This invention discloses an in-vehicle communication system, including an OLT optoelectronic module, an optoelectronic composite cable, and an OUT optoelectronic module. The OLT optoelectronic module includes a first optical circuit board, a control circuit board, and a first interface. The first optical circuit board has a first transmitting end and a first receiving end, and is electrically connected to the control circuit board and the first interface. The control circuit board is used to output electrical signals to an in-vehicle screen and input electrical signals to the first transmitting end. The OUT optoelectronic module includes a second optical circuit board, a second interface, and an in-vehicle camera. The second optical circuit board has a second transmitting end and a second receiving end. The second interface and the in-vehicle camera are both electrically connected to the second optical circuit board. The in-vehicle camera is used to acquire image information and transmit it to the second transmitting end, and to receive electrical signals from the second receiving end. The two ends of the optoelectronic composite cable are respectively connected to the first interface and the second interface.

[0006] The first transmitting end processes an electrical signal into an optical signal and sends it to the second receiving end via the optoelectronic composite cable; the second receiving end converts the optical signal back into an electrical signal and transmits it back to the vehicle-mounted camera; the second transmitting end processes another electrical signal into another optical signal and sends it to the first receiving end via the optoelectronic composite cable; the first receiving end is used to convert another optical signal emitted by the second transmitting end back into another electrical signal and transmit it back to the control circuit board.

[0007] In one embodiment, the first transmitting end includes a first laser chip and a first fiber core. The first laser chip is mounted on the first optical circuit board and is connected to the first interface through the first fiber core. The first laser chip is used to emit light, which is reflected by the optical lens group and then enters the first interface. Alternatively, the first receiving end includes a first photodetector and a second fiber core. The first photodetector is mounted on the first optical circuit board and is connected to the first interface through the second fiber core. The photodetector is used to receive light emitted from the first interface.

[0008] In one embodiment, the vehicle-mounted camera includes a vehicle-mounted circuit board and a plurality of cameras, the plurality of cameras being mounted on the vehicle-mounted circuit board; the first transmitting end includes a plurality of first transmitting units, and the second receiving end includes a plurality of receiving units corresponding one-to-one with the first transmitting units; the first transmitting units are used to transmit corresponding optical signals to the corresponding cameras via the corresponding receiving units; the first receiving end includes a plurality of detection units, and the second transmitting end includes a plurality of second transmitting units corresponding one-to-one with the detection units, the detection units being used to receive optical signals returned by the corresponding cameras via the corresponding second transmitting units.

[0009] In one embodiment, the optoelectronic composite cable includes a cable body, which includes a power conductor and an optical fiber conductor. The power conductor is used to supply power to the OLT optoelectronic module and the OUT optoelectronic module; the optical fiber conductor is used to transmit optical signals between the OLT optoelectronic module and the OUT optoelectronic module.

[0010] In one embodiment, the optoelectronic composite cable includes two electrical connectors located at both ends of the cable body; multiple optoelectronic composite cables are provided; the vehicle communication system further includes a connector adapter, and the multiple optoelectronic composite cables are connected in series through the connector adapter, with the electrical connectors of the first and last two optoelectronic composite cables respectively plugged into the first interface and the second interface.

[0011] In one embodiment, a latching structure is provided at the connection point between the interlocking adapter and the electrical connector, the latching structure being used to lock and unlock the electrical connector.

[0012] In one embodiment, the OLT optoelectronic module further includes a first housing, in which the first optical circuit board and the control circuit board are both installed, and the first interface is exposed outside the first housing. The first housing is used to connect with external components. Alternatively, the OUT optoelectronic module further includes a second housing, in which the second optical circuit board is installed inside the first housing, and the first interface and the vehicle-mounted camera are both exposed outside the first housing. The second housing is used to connect with external components.

[0013] In one embodiment, the first housing includes a first middle frame and two first cover plates. In the thickness direction of the first middle frame, the first optical circuit board and the control circuit board are arranged vertically on the first middle frame. The two first cover plates are respectively covered on both sides of the first middle frame. The first middle frame is provided with a first opening, and the first interface is installed in the first opening.

[0014] In one embodiment, a sealing element is also included, with one sealing element provided at the connection position between the first middle frame and the first cover plate, and at the connection position between the first opening and the first interface.

[0015] In one embodiment, the first housing has a protrusion on its exterior and a first connector extending through the protrusion. The first connector is used to connect with an external component so that the first housing is fixed to the external component.

[0016] The beneficial effects of the vehicle-mounted communication system provided in this invention are as follows: The system has downlink and uplink signal transmission capabilities. Downlink signal transmission involves the vehicle screen generating an electrical signal via a control circuit board. A first transmitter receives this electrical signal, processes it into an optical signal, and transmits it to a second receiver via an optoelectronic composite cable. The second receiver then converts the optical signal back into an electrical signal and transmits it to the vehicle camera, thereby enabling the vehicle screen to control the camera. Uplink signal transmission involves the vehicle camera capturing image information and sending it to a second transmitter. The second transmitter processes this image into another optical signal, which is then transmitted to the first receiver via an optoelectronic composite cable. The first receiver converts this optical signal back into an electrical signal and sends it back to the control circuit board, which then feeds it back to the vehicle screen, enabling real-time display of the camera image. In both processes, because the system uses an "electric-optical-electric" conversion transmission method, compared to embodiments using pure electrical signal transmission, optical signals, as the transmission medium, have advantages such as high speed and strong resistance to electromagnetic interference, significantly improving system response speed and image transmission stability. Meanwhile, the fiber optic composite cable integrates power supply and signal transmission functions, and is smaller in size than copper cable, which effectively simplifies the complexity of the overall system and is more conducive to deployment in complex vehicle environments. Attached Figure Description

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a three-dimensional schematic diagram of the vehicle communication system provided in an embodiment of the present invention; Figure 2 This is a disassembly diagram of the vehicle communication system provided in an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the internal wires of the optoelectronic composite cable in the vehicle communication system provided in this embodiment of the invention after being stripped. Figure 4 This is a three-dimensional schematic diagram of the OLT optoelectronic module provided in an embodiment of the present invention; Figure 5 This is a disassembly diagram of the OLT optoelectronic module provided in an embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the OUT optoelectronic module provided in an embodiment of the present invention; Figure 7 This is a disassembly diagram of the OUT optoelectronic module provided in an embodiment of the present invention.

[0018] The labels for the attached figures are as follows: 1000, Vehicle-mounted communication system; 10, OLT optoelectronic module; 11, First optical circuit board; 111, First transmitter; 1111, First laser chip; 1112, First fiber core; 112, First receiver; 1121, First photodetector; 1122, Second fiber core; 12, Control circuit board; 13, First interface; 14, First housing; 141, First middle frame; 1411, First opening; 142, First cover plate; 143, Protrusion; 20, Optoelectronic composite cable; 21. Line body; 211. Power line core; 212. Fiber optic cable core; 22. Electrical connector; 221. Latch structure; 30. OUT optoelectronic module; 31. Second optical circuit board; 311. Second transmitter; 312. Second receiver; 32. Second interface; 33. Vehicle-mounted camera; 331. Vehicle-mounted circuit board; 332. Camera; 34. Second housing; 341. Second middle frame; 3411. Second port; 342. Second cover plate; 40. Connector; 50. Seal. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] This invention provides a vehicle-mounted communication system 1000, such as... Figures 1-7As shown, the vehicle communication system 1000 includes an OLT optoelectronic module 10, an optoelectronic composite cable 20, and an OUT optoelectronic module 30. The OLT optoelectronic module 10 includes a first optical circuit board 11, a control circuit board 12, and a first interface 13. The first optical circuit board 11 has a first transmitter 111 and a first receiver 112, and is electrically connected to the control circuit board 12 and the first interface 13. The control circuit board 12 is used to output electrical signals to the vehicle screen and input electrical signals to the first transmitter 111. The OUT optoelectronic module 30 includes a second optical circuit board 31, a second interface 32, and a vehicle camera 33. The second optical circuit board 31 has a second transmitter 311 and a second receiver 312. The second interface 32 and the vehicle camera 33 are both... Electrically connected to the second optical circuit board 31; the vehicle-mounted camera 33 is used to acquire image information and transmit it to the second transmitter 311, and to receive electrical signals from the second receiver 312; the two ends of the optoelectronic composite cable 20 are respectively connected to the first interface 13 and the second interface 32; wherein, the first transmitter 111 processes the electrical signal into an optical signal and sends it to the second receiver 312 via the optoelectronic composite cable 20; the second receiver 312 restores the optical signal into an electrical signal and sends it back to the vehicle-mounted camera 33; the second transmitter 311 processes another electrical signal into another optical signal and sends it to the first receiver 112 via the optoelectronic composite cable 20; the first receiver 112 is used to restore another optical signal emitted by the second transmitter 311 into another electrical signal and send it back to the control circuit board 12.

[0021] Specifically, the vehicle communication system 1000 has downlink signal transmission and uplink signal transmission. The downlink signal transmission involves the vehicle screen generating an electrical signal through the control circuit board 12. The first transmitter 111 receives the electrical signal and processes it into an optical signal, which is then transmitted to the second receiver 312 via the optoelectronic composite cable 20. The second receiver 312 converts the optical signal back into an electrical signal and transmits it to the vehicle camera 33, thereby enabling the vehicle screen to control the vehicle camera 33. The uplink signal transmission involves the vehicle camera 33 collecting image information and sending it to the second transmitter 311. The second transmitter 311 processes the image information into another optical signal, which is then transmitted to the first receiver 112 via the optoelectronic composite cable 20. The first receiver 112 converts the other optical signal back into another electrical signal and transmits it back to the control circuit board 12. The control circuit board 12 then feeds the signal back to the vehicle screen, thereby enabling real-time display of the camera 332's image. In both processes described above, because the system signal transmission adopts an "electric-optical-electric" conversion transmission method, compared with the embodiment using pure electrical signal transmission via copper cables, optical signals, as the transmission medium, have advantages such as high speed and strong resistance to electromagnetic interference, which can significantly improve the system response speed and image transmission stability. At the same time, the optoelectronic composite cable 20 integrates power supply and signal transmission functions, is smaller in size than copper cables, effectively simplifies the overall system complexity, and is more conducive to deployment in complex vehicle environments.

[0022] Reference Figure 4 and Figure 5 In one embodiment, the first transmitting end 111 includes a first laser chip 1111 and a first fiber core 1112. The first laser chip 1111 is mounted on the first optical circuit board 11, and the first laser chip 1111 is connected to the first interface 13 through the first fiber core 1112. The first laser chip 1111 emits light, which is reflected by an optical lens group and then enters the first interface 13. Thus, the first laser chip 1111 can process the electrical signal emitted by the control circuit board 12 into an optical signal. The optical signal enters the emission path of the first interface 13 through the first fiber core 1112. The optical signal can be transmitted using the optoelectronic composite cable 20 and sent to the second receiving end 312. The second receiving end 312 then converts the optical signal back into an electrical signal and transmits it to the vehicle-mounted camera 33, thereby enabling the vehicle-mounted screen to control the vehicle-mounted camera 33 to operate.

[0023] The first receiving end 112 includes a first photodetector 1121 and a second fiber core 1122. The first photodetector 1121 is mounted on the first optical circuit board 11 and is connected to the second connector via the second fiber core 1122. The first photodetector 1121 is used to receive the optical signal emitted from the first interface 13 and process the electrical signal. In this way, the first receiving end 112 can receive the optical signal from the second transmitting end 311, process the optical signal into an electrical signal, and transmit it to the control circuit board 12. The control circuit board 12 then feeds the electrical signal back to the vehicle screen, realizing the real-time display of image information captured by the vehicle camera 33.

[0024] In the above embodiment, the OLT optoelectronic module 10 converts electrical signals into optical signals and transmits them to the ONU optoelectronic module via the optoelectronic composite cable 20 to control the vehicle-mounted camera 33. Simultaneously, the ONU optoelectronic module converts the acquired image information into another optical signal and transmits it back to the OLT optoelectronic module 10 via the same optoelectronic composite cable 20, ultimately feeding back to the vehicle-mounted screen. This system utilizes the optoelectronic composite cable 20 for optical signal transmission, which offers higher efficiency and stability compared to pure electrical signal transmission, thus improving the response speed and reliability of the vehicle communication system 1000.

[0025] Similarly, the configuration of the second transmitter 311 is the same as that of the first transmitter 111, and the configuration of the second receiver 312 is the same as that of the first receiver 112, which will not be repeated here.

[0026] Reference Figure 6 and Figure 7Preferably, in one embodiment, the vehicle-mounted camera 33 includes a vehicle-mounted circuit board 331 and a plurality of cameras 332, the plurality of cameras 332 being mounted on the vehicle-mounted circuit board 331; the first transmitting end 111 includes a plurality of first transmitting units, and the second receiving end 312 includes a plurality of receiving units corresponding one-to-one with the transmitting units; the first transmitting units are used to transmit corresponding optical signals to the corresponding cameras 332 via the corresponding receiving units; the first receiving end 112 includes a plurality of detection units, and the second transmitting end 311 includes a plurality of second transmitting units corresponding one-to-one with the detection units, the detection units being used to receive the optical signals returned by the corresponding cameras 332 via the corresponding second transmitting units. Thus, the vehicle-mounted communication system 1000 sets up an independent optical transceiver channel for each camera 332, enabling simultaneous synchronous and coordinated control of multiple cameras 332, significantly improving system efficiency and scalability.

[0027] Specifically, multiple cameras 332 can be categorized into tri-lens cameras 332, surround-view cameras 332, lidar cameras 332, HUD cameras 332, etc.

[0028] Reference Figure 3 In one embodiment, the optoelectronic composite cable 20 includes a cable body 21, which includes a power core 211 and an optical fiber core 212. The power core 211 supplies power to the OLT optoelectronic module 10 and the OUT optoelectronic module 30; the optical fiber core 212 transmits optical signals between the OLT optoelectronic module 10 and the OUT optoelectronic module 30. Thus, power supply and signal transmission are separated and independent, ensuring stable power supply and more efficient optical signal transmission processing. The optical fiber core 212 can be adapted according to the number of first fiber cores 1112, second fiber cores 1122, and cameras 332 to meet the synchronous optical signal transmission of multiple cameras 332.

[0029] Reference Figure 3 In one embodiment, the optoelectronic composite cable 20 includes two electrical connectors 22 located at both ends of the cable body 21; multiple optoelectronic composite cables 20 are provided; the vehicle communication system 1000 also includes a connector adapter 40, through which the multiple optoelectronic composite cables 20 are connected in series, and the electrical connectors 22 of the first and last optoelectronic composite cables 20 are respectively plugged into the first interface 13 and the second interface 32. Thus, the electrical connectors 22 ensure the connection stability between the OLT optoelectronic module 10, the ONU optoelectronic module and the optoelectronic composite cable 20, ensuring reliable signal transmission; simultaneously, through the cooperation of multiple optoelectronic composite cables 20 and the connector adapter 40, the vehicle communication system 1000 can flexibly route and configure the number of cables according to the actual installation distance between the OLT optoelectronic module 10 and the ONU optoelectronic module, thus having higher adaptability.

[0030] Reference Figure 2In one embodiment, a latching structure 221 is provided at the connection point between the interlocking adapter 40 and the electrical connector 22. The latching structure 221 is used to lock and unlock the electrical connector 22. In this way, the latching structure 221 can ensure that the electrical connector 22 will not be accidentally separated due to external forces such as vehicle vibration after connection, thereby better adapting to the vehicle driving environment.

[0031] Specifically, the latch structure 221 includes a resilient latch arm and a locking lug, which are respectively disposed on the adapter 40 and the electrical connector 22. When the adapter 40 and the electrical connector 22 are plugged into each other, the resilient latch arm and the locking lug engage to achieve locking; by pressing the resilient latch arm, the two can be separated to achieve unlocking.

[0032] Reference Figure 4 and Figure 5 In one embodiment, the OLT optoelectronic module 10 further includes a first housing 14, in which the first optical circuit board 11 and the control circuit board 12 are both installed, and the first interface 13 is exposed outside the first housing 14. The first housing 14 is used for connection with external components. The OUT optoelectronic module 30 further includes a second housing 34, in which the second optical circuit board 31 is installed, and the first interface 13 and the vehicle-mounted camera 33 are both exposed outside the first housing 14. The second housing 34 is used for connection with external components. With this configuration, the first housing 14 and the second housing 34 can improve the protection of the OLT optoelectronic module 10 and the ONU optoelectronic module, and better adapt to the bumpy environment during vehicle operation. At the same time, the two housings can also reliably fix the module to the vehicle, ensuring installation reliability.

[0033] Specifically, the first housing 14 includes a first middle frame 141 and two first cover plates 142, in the thickness direction of the first middle frame 141 (e.g., ...). Figure 5 As shown in the X1 direction, the first optical circuit board 11 and the control circuit board 12 are arranged vertically within the first middle frame 141. Two first cover plates 142 are respectively installed on both sides of the first middle frame 141. The first middle frame 141 has a first opening 1411, and the first interface 13 is installed inside the first opening 1411. In this way, the first middle frame 141 can fix and limit the first optical circuit board 11 and the control circuit board 12. The vertical arrangement of the first optical circuit board 11 and the control circuit board 12 helps to reduce the size of the first housing 14, which is more conducive to the installation of the OLT optoelectronic module 10. The two first cover plates 142 can form a receiving cavity together with the first middle frame 141, which can protect the first optical circuit board 11 and the control circuit board 12.

[0034] Similarly, the second housing 34 includes a second middle frame 341 and two second cover plates 342, in the thickness direction of the second middle frame 341 (e.g. Figure 7As shown in the X2 direction, the second optical circuit board 31 and the vehicle-mounted camera 33 are arranged vertically in the second middle frame 341. Two second cover plates 342 are respectively covered on both sides of the second middle frame 341. The second cover plate 342 is provided with multiple second ports 3411. The second interface 32 and the multiple cameras 332 of the vehicle-mounted camera 33 are installed in one second port 3411.

[0035] Reference Figure 7 In one embodiment, a sealing element 50 is also included. A sealing element 50 is provided at the connection position between the first middle frame 141 and the first cover plate 142, and at the connection position between the first opening 1411 and the first interface 13. Thus, the sealing element 50 improves the waterproof and dustproof performance of the first housing 14, preventing damage to components inside the first housing 14 from dust or moisture, and extending the service life of the vehicle communication system 1000. Specifically, the sealing element 50 can be made of silicone material.

[0036] Reference Figure 5 There are many ways to connect the first housing 14 to the external component. In one embodiment, the first housing 14 has a protrusion 143 on its exterior and also includes a first connector that passes through the protrusion 143 and is used to connect with the external component, thereby fixing the first housing 14 to the external component. This achieves the goal of fixing the first housing 14 to the vehicle. Specifically, the first connector can be a screw, which passes through the protrusion 143 and is threaded onto the vehicle. In another embodiment, the first housing 14 has a connecting hole on its exterior for connecting a fastener. The fastener is positioned and installed inside the vehicle, thereby fixing the first housing 14 to the external component.

[0037] The connection method between the second housing 34 and the external components is similar to that of the first housing 14, and will not be repeated here.

[0038] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. A vehicle-mounted communication system, characterized in that, The system includes an OLT optoelectronic module, an optoelectronic composite cable, and an OUT optoelectronic module. The OLT optoelectronic module includes a first optical circuit board, a control circuit board, and a first interface. The first optical circuit board has a first transmitting end and a first receiving end, and is electrically connected to the control circuit board and the first interface. The control circuit board is used to output electrical signals to a vehicle-mounted screen and input electrical signals to the first transmitting end. The OUT optoelectronic module includes a second optical circuit board, a second interface, and a vehicle-mounted camera. The second optical circuit board has a second transmitting end and a second receiving end. The second interface and the vehicle-mounted camera are both electrically connected to the second optical circuit board. The vehicle-mounted camera is used to acquire image information and transmit it to the second transmitting end, and to receive electrical signals from the second receiving end. The two ends of the optoelectronic composite cable are respectively connected to the first interface and the second interface. The first transmitting end processes an electrical signal into an optical signal and sends it to the second receiving end via the optoelectronic composite cable; the second receiving end converts the optical signal back into an electrical signal and transmits it back to the vehicle-mounted camera; the second transmitting end processes another electrical signal into another optical signal and sends it to the first receiving end via the optoelectronic composite cable; the first receiving end is used to convert another optical signal emitted by the second transmitting end back into another electrical signal and transmit it back to the control circuit board.

2. The vehicle-mounted communication system according to claim 1, characterized in that, The first transmitting end includes a first laser chip and a first fiber core. The first laser chip is mounted on the first optical circuit board and is connected to the first interface through the first fiber core. The first laser chip is used to emit light, which is reflected by the optical lens group and then enters the first interface. Alternatively, the first receiving end includes a first photodetector and a second fiber core. The first photodetector is mounted on the first optical circuit board and is connected to the first interface through the second fiber core. The photodetector is used to receive light emitted from the first interface.

3. The vehicle-mounted communication system according to claim 2, characterized in that, The vehicle-mounted camera includes a vehicle-mounted circuit board and multiple cameras, with the multiple cameras mounted on the vehicle-mounted circuit board; the first transmitting end includes multiple first transmitting units, and the second receiving end includes multiple receiving units corresponding to the first transmitting units; the first transmitting units are used to transmit corresponding light signals to the corresponding cameras via the corresponding receiving units; the first receiving end includes multiple detection units, and the second transmitting end includes multiple second transmitting units corresponding to the detection units, with the detection units used to receive light signals returned by the corresponding cameras via the corresponding second transmitting units.

4. The vehicle-mounted communication system according to claim 3, characterized in that, The optoelectronic composite cable includes a cable body, which includes a power conductor core and an optical fiber core. The power conductor core is used to supply power to the OLT optoelectronic module and the OUT optoelectronic module; the optical fiber core is used to transmit optical signals between the OLT optoelectronic module and the OUT optoelectronic module.

5. The vehicle-mounted communication system according to claim 4, characterized in that, The optoelectronic composite cable includes two electrical connectors, which are located at both ends of the cable body; multiple optoelectronic composite cables are provided; the vehicle communication system also includes a connector adapter, and the multiple optoelectronic composite cables are connected in series through the connector adapter, with the electrical connectors of the first and last two optoelectronic composite cables respectively plugged into the first interface and the second interface.

6. The vehicle-mounted communication system according to claim 5, characterized in that, The connection points of the interlocking adapter and the electrical connector are provided with a latching structure, which is used to lock and unlock the electrical connector.

7. The vehicle-mounted communication system according to any one of claims 1-6, characterized in that, The OLT optoelectronic module further includes a first housing, in which the first optical circuit board and the control circuit board are both installed, and the first interface is exposed outside the first housing. The first housing is used to connect with external components; and / or, the OUT optoelectronic module further includes a second housing, in which the second optical circuit board is installed inside the first housing, and the first interface and the vehicle camera are both exposed outside the first housing. The second housing is used to connect with external components.

8. The vehicle-mounted communication system according to claim 7, characterized in that, The first housing includes a first middle frame and two first cover plates. In the thickness direction of the first middle frame, the first optical circuit board and the control circuit board are arranged vertically on the first middle frame. The two first cover plates are respectively covered on both sides of the first middle frame. The first middle frame is provided with a first opening, and the first interface is installed in the first opening.

9. The vehicle-mounted communication system according to claim 8, characterized in that, It also includes sealing elements, with one sealing element provided at the connection position between the first middle frame and the first cover plate, and at the connection position between the first opening and the first interface.

10. The vehicle-mounted communication system according to claim 7, characterized in that, The first housing has a protrusion on its exterior and also includes a first connector that passes through the protrusion and is used to connect with an external component so that the first housing is fixed to the external component.

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