Vehicle-mounted communication terminal, vehicle, and satellite communication system

Abstract

The utility model discloses a vehicle-mounted communication terminal, a vehicle and a satellite communication system. The vehicle-mounted communication terminal comprises an antenna port; the satellite communication module is in communication connection with the antenna port, and the satellite communication module is used for communicating with a low-orbit satellite through the antenna port; and the communication interface is in communication connection with the satellite communication module, and the communication interface is used for accessing the satellite communication module to a vehicle-mounted communication network. According to the scheme, the vehicle-mounted communication terminal comprises the satellite communication module and the corresponding communication interface, the satellite communication module can be used for communicating with a low-orbit satellite, and then the communication interface can be used for communicating with a vehicle-mounted communication network, so that a data communication link between the vehicle communication network and a low-orbit satellite system can be opened, and the communication efficiency is improved. Therefore, the vehicle can fully use abundant low-orbit satellite communication resources, the communication time delay is small, and the communication path loss is small.

Description

Technical Field

[0001] This application relates to the field of vehicle communication technology, and more specifically, to an in-vehicle communication terminal, a vehicle, and a satellite communication system. Background Art

[0002] In the outdoors without cellular networks, satellite communication is an important technical method to solve vehicle communication requirements. Currently, medium and high-orbit in-vehicle satellite communication devices are installed on vehicles to achieve communication functions with medium and high-orbit satellite systems.

[0003] However, limited by medium and high-orbit satellite communication resources and orbital communication distances, the satellite channel resources available for vehicles are few, and the communication delay is large. Summary of the Utility Model

[0004] Embodiments of this application provide an in-vehicle communication terminal, a vehicle, and a satellite communication system. The following introduces each aspect involved in the embodiments of this application.

[0005] In a first aspect, an in-vehicle communication terminal is provided, including: an antenna port; a satellite communication module communicatively connected to the antenna port, where the satellite communication module is configured to communicate with a low-orbit satellite through the antenna port; and a communication interface communicatively connected to the satellite communication module, where the communication interface is configured to connect the satellite communication module to an in-vehicle communication network.

[0006] As a possible implementation, the in-vehicle communication terminal further includes: a controller connected between the satellite communication module and the communication interface, where the controller is configured to control data transmission between the satellite communication module and the communication interface.

[0007] As a possible implementation, the controller is a microcontroller unit (MCU).

[0008] As a possible implementation, the controller is connected to the satellite communication module through a universal asynchronous receiver / transmitter (UART) interface.

[0009] As a possible implementation, the communication interface is configured to connect the satellite communication module to an in-vehicle Ethernet or a controller area network (CAN).

[0010] In a second aspect, a vehicle is provided, including the in-vehicle communication terminal according to the first aspect or any implementation of the first aspect.

[0011] As a possible implementation, the vehicle further includes: one or more electronic control units (ECUs) connected to the communication interface, where the one or more ECUs are configured to communicate with the in-vehicle communication terminal.

[0012] As a possible implementation, the vehicle further includes: a satellite antenna connected to the antenna port.

[0013] According to a third aspect, an equipment management system is provided, comprising a vehicle as described in the second aspect or any implementation of the second aspect; and one or more low-orbit satellites in communication with the vehicle.

[0014] As a possible implementation method, the satellite communication system also includes: a ground station, which is communicatively connected to the one or more low-orbit satellites; a server, on which a satellite cloud platform is provided, and the satellite cloud platform communicates with the one or more low-orbit satellites through the ground station.

[0015] The present application provides an on-vehicle communication terminal, which includes: an antenna port; a satellite communication module, communicatively connected to the antenna port, the communication module being used to communicate with a low-orbit satellite via the antenna port; and a communication interface, communicatively connected to the satellite communication module, the communication interface being used to connect the satellite communication module to an on-vehicle communication network. This solution provides an on-vehicle communication terminal, including a satellite communication module and a corresponding communication interface. The satellite communication module can be used to communicate with a low-orbit satellite, and then the communication interface can be used to communicate with the on-vehicle communication network, thereby establishing a data communication link between the vehicle communication network and the low-orbit satellite system, enabling the vehicle to fully utilize the abundant low-orbit satellite communication resources with low communication latency and low communication path loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a vehicle-mounted communication terminal provided in one embodiment of the present application.

[0017] Figure 2 It is a structural diagram of a vehicle-mounted communication terminal provided in another embodiment of the present application.

[0018] Figure 3 It is a structural schematic diagram of a vehicle provided in one embodiment of the present application.

[0019] Figure 4 FIG. 1 is a schematic diagram of the architecture of a satellite communication system provided in another embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0021] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and 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 will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the present utility model, unless otherwise clearly specified and limited, terms such as "arranged", "installed", "connected", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific circumstances.

[0023] The term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the elements listed, it may also include other elements not specifically listed.

[0024] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0025] In the technical field of satellite constellation communication, according to different operating altitudes, satellites can generally be divided into three categories: low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, and high earth orbit (HEO) satellites (which can be simply referred to as low-orbit satellites). Limited by the communication resources of medium and high-orbit satellites and the communication distance of orbits, the communication resources of medium and high-orbit satellite systems are relatively scarce, and the communication delay is relatively high.

[0026] In contrast, a low-orbit satellite system generally refers to a large satellite system composed of multiple low-orbit satellites that can perform real-time information processing. The distribution of low-orbit satellites is called a low-orbit satellite constellation. Due to its proximity to the ground, the low-orbit satellite communication system has advantages such as small delay, small path loss, and small transmit power, and is widely used in various fields. The low-orbit satellite constellation can provide global coverage, rapidly improve satellite communication, satellite remote sensing and other capabilities; it has great potential in communication broadband and can improve service quality with a relatively low signal propagation delay; applying the low-orbit constellation to the signal enhancement of the current global navigation satellite system can achieve rapid and precise positioning.

[0027] Therefore, how to implement the low-orbit satellite communication function of a vehicle is a technical problem that urgently needs to be solved.

[0028] In view of the above problems, the present application provides a vehicle-mounted communication terminal, which includes: an antenna port; a satellite communication module communicatively connected to the antenna port, and the communication module is used to communicate with a low-orbit satellite through the antenna port; a communication interface communicatively connected to the satellite communication module, and the communication interface is used to connect the satellite communication module to the vehicle-mounted communication network. This solution provides a vehicle-mounted communication terminal, including a satellite communication module and a corresponding communication interface. The satellite communication module can be used to communicate with a low-orbit satellite, and then communicate with the vehicle-mounted communication network through the above communication interface, so as to establish a data communication link between the vehicle communication network and the low-orbit satellite system, enabling the vehicle to make full use of rich low-orbit satellite communication resources, with small communication delay and small communication path loss. The vehicle-mounted communication terminal in the embodiments of the present application will be introduced in detail below with reference to the accompanying drawings.

[0029] Figure 1 A vehicle-mounted communication terminal 100 provided by an embodiment of the present application. Refer to Figure 1 , the vehicle-mounted communication terminal 100 may include: an antenna port 110, a satellite communication module 120, and a communication interface 130.

[0030] The satellite communication module 120 can be communicatively connected to the antenna port 110. The satellite communication module 120 is used to communicate with a low-orbit satellite through the antenna port 110. In some implementation manners, since the satellite communication module 120 is used to communicate with a low-orbit satellite, the satellite communication module 120 can also be referred to as a low-orbit satellite communication module.

[0031] It should be understood that the antenna port 110 of the vehicle-mounted communication terminal 100 can be used to connect to a satellite antenna. That is, the communication module can be used to communicate with a low-orbit satellite through the antenna port 110 via the satellite antenna.

[0032] In some implementation manners, the antenna port 110 can be, for example, an F-type connector interface or an N-type connector interface; of course, the antenna port 110 can also be other types of connector interfaces, and the present application does not make specific limitations thereto.

[0033] The embodiments of the present application do not make specific limitations on the communication method between the satellite communication module 120 and the low-orbit satellite. For example, short messages or phone calls can be made between the satellite communication module 120 and the low-orbit satellite. As an example, short message data communication can be performed between the satellite communication module 120 and the low-orbit satellite.

[0034] The communication interface 130 can be communicatively connected to the satellite communication module 120, and the communication interface 130 is used to connect the satellite communication module 120 to the vehicle-mounted communication network 130.

[0035] The embodiments of the present application do not specifically limit the type of the communication interface 130. For example, the communication interface 130 can be an Ethernet communication interface; or, the communication interface 130 can also be a controller area network (CAN) communication interface; of course, the communication interface 130 can also be other types of communication interfaces, such as the communication interface 130 can be a universal asynchronous receiver / transmitter (UART) interface, and the present application does not specifically limit this.

[0036] In some implementation manners, referring to Figure 2 , the vehicle-mounted communication terminal 100 further includes a controller 140. The controller 140 can be connected between the satellite communication module 120 and the communication interface 130, and the controller 140 is used to control the data transmission between the satellite communication module 120 and the communication interface 130.

[0037] The embodiments of the present application do not specifically limit the type of the controller 140. The controller 140 can be a micro control unit (MCU), or the controller 140 can also be a central processing unit (CPU). Or, the controller 140 can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0038] In some implementation manners, the controller 140 is connected to the satellite communication module 120 through a universal asynchronous receiver / transmitter UART interface.

[0039] In some implementation manners, the communication interface 130 can be used to connect the satellite communication module 120 to a vehicle-mounted communication network. The vehicle-mounted communication network can be, for example, Ethernet, or it can also be a controller area network (CAN), or it can also be a local interconnect network (LIN), etc., and the present application does not specifically limit this.

[0040] As an example, the communication interface 130 is used to connect the satellite communication module 120 to the vehicle controller area network via the CAN bus.

[0041] An embodiment of this application also provides a vehicle 200, as Figure 3 shown. The vehicle 200 includes any type of in-vehicle communication terminal 100 mentioned above.

[0042] In some implementation manners, the vehicle 200 further includes: one or more electronic control units (ECUs) 210. ECUs can be used to represent multiple electronic control units. One or more electronic control units 210 are connected to the communication interface 130, and one or more electronic control units 210 can be used to communicate with the in-vehicle communication terminal.

[0043] It should be noted that one or more electronic control units 210 can be used to manage and control the systems and functions of the vehicle 200. The ECU can exchange data with other ECUs or sensors through different communication interfaces.

[0044] In some implementation manners, one or more electronic control units 210 can be used to control various systems of the vehicle 200. The following are examples of data transmission control that one or more electronic control units 210 can perform:

[0045] (1) Powertrain control. Engine management system control: One or more electronic control units 210 monitor the operating state of the engine, such as speed, temperature, oil pressure, etc., and adjust parameters such as fuel injection volume and ignition timing accordingly. Transmission control: One or more electronic control units 210 can control the shift logic of the automatic transmission to optimize performance and fuel efficiency.

[0046] (2) Chassis and driving control. Braking system control: For ABS (antilock braking system) and ESC (electronic stability control system), one or more electronic control units 210 prevent wheel lock-up or loss of control by monitoring the data of wheel speed sensors. Suspension system control: For the active suspension system, one or more electronic control units 210 can adjust the hardness of the shock absorbers according to road conditions and vehicle dynamics. Steering system control: For EPS (electric power steering system), one or more electronic control units 210 adjust the steering assist according to vehicle speed and steering wheel angle.

[0047] (3) Safety system. Airbag control system control: One or more electronic control units 210 monitor the data of collision sensors and decide when to trigger the airbag. Reverse radar and camera control: One or more electronic control units 210 process the data from radar sensors or cameras and provide obstacle warnings to the driver or display rearview images.

[0048] (4) Infotainment System. Multimedia Center Control: One or more electronic control units 210 control functions such as audio and video playback and navigation systems, and interact with touchscreens or voice recognition systems. Telematics Control: One or more electronic control units 210 can collect vehicle data and send it to a service center via a cellular network for diagnosis and service reminders.

[0049] (5) Comfort System. Air Conditioning System Control: One or more electronic control units 210 adjust the operating mode of the air conditioner according to sensor data such as the temperature and humidity inside the vehicle. Seat Heating and Ventilation Control: One or more electronic control units 210 control the heating or ventilation system based on the set temperature and feedback from seat sensors.

[0050] (6) Diagnosis and Monitoring. On-Board Diagnosis Control: One or more electronic control units 210 communicate with external devices through a diagnostic interface to report fault codes and real-time vehicle data. Battery Management System Control: One or more electronic control units 210 monitor the battery voltage, current, and temperature to ensure the safe operation of the battery.

[0051] (7) Advanced Driver Assistance System Control: For example, one or more electronic control units 210 process data from radars or cameras to detect vehicles in blind spots. Another example is that one or more electronic control units 210 determine whether to initiate emergency braking based on the distance and speed of the obstacle ahead. Another example is that one or more electronic control units 210 monitor the distance to the vehicle in front through radar sensors and automatically adjust the vehicle speed to maintain a safe distance.

[0052] (8) Body Electronics System. Lighting System Control: One or more electronic control units 210 can automatically adjust the headlight brightness according to the ambient light intensity or control the daytime running lights. Door Lock and Key System Control: One or more electronic control units 210 communicate with the remote key to achieve keyless entry and start functions.

[0053] (9) Energy Management. Hybrid and Electric Vehicle Control: One or more electronic control units 210 manage battery charging, energy recovery, and power distribution between the electric motor and the internal combustion engine.

[0054] (10) Data Security and Encryption Control: One or more electronic control units 210 can implement encryption measures to protect data transmission and prevent unauthorized access.

[0055] Through these data transmission controls, one or more electronic control units 210 can ensure the efficient and safe operation of various vehicle systems and functions.

[0056] In some implementations, continue to refer to Figure 3, the vehicle 200 also includes a satellite antenna 220, and the satellite antenna 220 is connected to the antenna port 110.

[0057] This application does not specifically limit the type of the satellite antenna 220. For example, the satellite antenna 220 can be a C-band antenna (also known as a prime focus antenna); another example is that the satellite antenna 220 can also be a Ku-band antenna (offset antenna).

[0058] It should be noted that the C-band antenna is usually larger and is also called a "big dish". The C-band antenna can be used to receive C-band (about 3.7 to 4.2 GHz) signals.

[0059] It should be noted that the Ku-band antenna is usually smaller and is also called a "small dish". The C-band antenna can be used to receive Ku-band (about 12.25 to 12.75 GHz) signals.

[0060] The embodiment of this application also provides a satellite communication system, as Figure 4 shown, the satellite communication system 300 includes any type of vehicle 200 mentioned above and one or more low-earth orbit satellites 310, and the one or more low-earth orbit satellites 310 are communicatively connected to the vehicle 200.

[0061] In some implementation manners, the satellite communication system 300 further includes a ground station 320 and a server 330. The ground station 320 is communicatively connected to the one or more low-earth orbit satellites 310; a satellite cloud platform is provided on the server 330, and the satellite cloud platform communicates with the one or more low-earth orbit satellites 310 through the ground station 320.

[0062] In some implementation manners, the ground station 320 can be a fixed ground station or a mobile ground station, and this application does not specifically limit this.

[0063] In some implementation manners, the server 330 can be a general-purpose server, a compute-intensive server, or a storage-intensive server, and this application does not specifically limit this.

[0064] It can be seen from the above content that this solution provides an in-vehicle low-earth orbit satellite communication terminal, which can realize the interconnection and intercommunication of the vehicle with the ground network, the in-vehicle network, and the satellite network through the low-earth orbit satellite system.

[0065] It should be understood that the on-vehicle low-earth orbit terminal in the embodiments of the present application solves the communication link between the low-earth orbit satellite and the vehicle, avoids emergency communication in scenarios where there is no 4G / 5G communication in the cellular network, and also solves the problems of scarce communication resources and large communication latency of current medium- and high-earth orbit satellites. In addition, in the embodiments of the present application, the on-vehicle low-earth orbit terminal realizes interconnection and interoperability with the vehicle through CAN or in-vehicle Ethernet; externally, it communicates with the low-earth orbit satellite system through an on-vehicle antenna. In addition, satellite information can be sent to a ground observation station and then transmitted to the satellite cloud platform of the server.

[0066] It should be noted that the embodiments in the specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. It should be pointed out that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0067] As described above, the above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A vehicle-mounted communication terminal, characterized in that, Comprising: Antenna port; A satellite communication module, communicatively connected to the antenna port, the satellite communication module being configured to communicate with a low-earth orbit satellite via the antenna port; A communication interface, communicatively connected to the satellite communication module, the communication interface being configured to connect the satellite communication module to a vehicle communication network.

2. The vehicle-mounted communication terminal according to claim 1, characterized in that, The vehicle communication terminal further comprises: A controller, connected between the satellite communication module and the communication interface, the controller being configured to control data transmission between the satellite communication module and the communication interface.

3. The vehicle-mounted communication terminal according to claim 2, characterized in that, The controller is a microcontroller unit MCU.

4. The vehicle-mounted communication terminal according to claim 2, characterized in that, The controller is connected to the satellite communication module via a Universal Asynchronous Receiver-Transmitter UART interface.

5. The vehicle-mounted communication terminal according to any one of claims 1 to 4, characterized in that, The communication interface is configured to connect the satellite communication module to a vehicle Ethernet or a Controller Area Network CAN.

6. A vehicle, characterized in that, Comprising the vehicle communication terminal according to any one of claims 1 to 5.

7. The vehicle according to claim 6, characterized in that, The vehicle further comprises: One or more Electronic Control Units ECUs, connected to the communication interface, the one or more ECUs being configured to communicate with the vehicle communication terminal.

8. The vehicle according to claim 6 or 7, characterized in that, The vehicle further comprises: A satellite antenna, connected to the antenna port.

9. A satellite communication system, characterized in that, Comprising: The vehicle according to any one of claims 6 to 8; One or more low-earth orbit satellites, communicatively connected to the vehicle.

10. The satellite communication system according to claim 9, wherein The satellite communication system further comprises: A ground station, communicatively connected to the one or more low-earth orbit satellites; A server, on which a satellite cloud platform is provided, the satellite cloud platform communicating with the one or more low-earth orbit satellites via the ground station.

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