5G V2X vehicle-mounted terminal device

Abstract

The invention discloses a 5G V2X vehicle-mounted terminal device, and particularly relates to the technical field of wireless communication, which comprises a core processor, a power manager, a PCB (Printed Circuit Board) and an external interface, wherein the core processor comprises a 5G module, an AP (Access Point) processor and an MCU (Microprogrammed Control Unit); the power supply manager comprises a vehicle-mounted power supply, a standby battery and a power supply management chip; the PCB is a printed circuit board and bears connection and wiring of the core processor, the power manager, the 5G module and other external equipment; the external interfaces comprise a peripheral equipment interface, a storage interface, an encryption chip butt joint interface, a debugging interface, an expansion card slot and an antenna interface, through the low delay characteristic of 5G, the vehicle-mounted terminal can rapidly receive and send various information, support is provided for real-time sensing and interaction of a vehicle and the surrounding environment, the reaction time is shortened, and the service life of the vehicle-mounted terminal is prolonged. And accidents can be avoided and the traffic efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and more specifically, to a 5G V2X vehicle-mounted terminal device. Background Art

[0002] V2X is an application technology based on wireless communication technology to achieve information and data exchange between vehicles and the external environment such as vehicles and vehicles, vehicles and roads, vehicles and clouds, and vehicles and people to improve safety and efficiency. It mainly includes V2V, V2I, V2N, and V2P. V2V is the information exchange between different vehicles on the road through vehicle terminals. V2I is the exchange of traffic light information and traffic sign information between vehicles and RSU through vehicle terminals. Roadside infrastructure can receive information from nearby vehicles and also release traffic accident congestion information and road condition information to vehicles within the signal coverage range. V2P is the communication between vehicles and vulnerable traffic participants through vehicle terminals. Vehicles can perceive vulnerable traffic participants in blind spots in advance. V2N is the exchange of information between vehicles and cloud management platforms through vehicle terminals. The cloud platform can obtain and store data from vehicles in a wide range.

[0003] In recent years, Internet of Vehicles technology has continued to develop and mature, and combined with autonomous driving, it has become the basic technology and innovation hotspot of smart cities and intelligent transportation, promoting innovation in the field of automobile transportation. Through the Internet of Vehicles, cars, roads, people, and clouds form an organic whole. By exchanging information with each other, vehicles can obtain driving information beyond visual range and surrounding road information, so as to plan and make decisions in advance, greatly improve the safety and efficiency of the transportation system, and thus build a smart travel system. However, there is currently no integrated vehicle-mounted unit for 5G V2X. With the widespread deployment of 5G, it is necessary to provide 5G and V2X communication services on a single development board to better meet the communication needs of networking in the automotive field. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a 5G V2X vehicle-mounted terminal device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a 5G V2X vehicle-mounted terminal device, comprising a core processor, a power manager, a PCB board, and an external interface; wherein the core processor comprises a 5G module, an AP processor and an MCU unit; the power manager comprises an on-board power supply, a backup battery and a power management chip; the external interface comprises a peripheral device interface, a storage interface, an encryption chip docking interface, a debugging interface, an expansion card slot and an antenna interface.

[0006] In a preferred embodiment, the 5G module realizes 5G networking function and V2X communication function, and the peripherals include wifi, GNSS, eMMC, eSIM, I MU, HSM, Eth-phy, USB, CODEC;

[0007] Among them, Wi Fi provides the vehicle's Wi-Fi function and can connect to Wi-Fi for debugging; the GNSS antenna receives the positioning signal of the global navigation satellite system; eMMC serves as the FLAS memory of the 5G module, storing system files, program executable files and configuration files; eSIM is an embedded electronic user identification card that accesses the operator's network; I MU is an inertial measurement unit that provides the vehicle's three-axis acceleration and angular rate, and combines the positioning signal for combined navigation; HSM is a hardware encryption module; Eth-phy communicates by connecting to the T1 connector; USB is used to connect to a computer for debugging and data transmission; CODEC is an audio codec that connects to a microphone and speaker to provide the vehicle's emergency call function.

[0008] In a preferred embodiment, the AP processor is used to run the V2X protocol stack and is externally connected to eMMC, DDR, HSM and UART debugging interfaces, wherein the AP processor and the 5G module communicate via USB3.0, SPI and MCU, the AP is powered by a power manager and wakes up from sleep, DDR provides RAM for operation, and HSM provides hardware encryption functions.

[0009] In a preferred embodiment, the MCU unit is responsible for processing vehicle-side signals, connecting three CAN transceivers, one LIN transceiver, and multiple A / D converters to collect hardware buttons on the vehicle, including emergency call button signals, and connecting to the car remote control key RKE and Bluetooth BLE to send the collected data to the 5G module and AP processor via SPI, responsible for the power management of the entire T-box and realizing the sleep wake-up function.

[0010] In a preferred embodiment, the power management of the entire T-box and the realization of the sleep wake-up function, wherein the wake-up source of the vehicle terminal includes six types of signals, five types of wake-up source signals are directly connected to the MCU unit, and one type of wake-up source is sent to the 5G module; the five types of wake-up sources connected to the MCU unit are:

[0011] 1. CAN wake-up source of the vehicle CAN network. When the T-box is in sleep mode, the V2X function does not work. Other ECUs in the vehicle network can wake up the T-box through the CAN sleep wake-up signal.

[0012] 2. Remote control key RKE wake-up source: when the vehicle is dormant and the remote control key approaches the vehicle to a certain distance, RKE activates the T-box, and the MCU wakes up first. The MCU unit notifies the 5G module and AP to wake up;

[0013] 3. Bluetooth wake-up source, similar to RKE, can wake up the T-box and activate V2X functions;

[0014] 4. Emergency call button wake-up source: when the vehicle is in sleep mode, just press the e-Call button to wake up the T-box immediately and activate all functions;

[0015] 5. Cloud server wake-up source: When the 5G module is in sleep mode, the cloud server can activate the T-box by sending a text message. After receiving the text message, the 5G module wakes up the MCU unit, and the MCU unit then notifies the 5G module and AP to work normally.

[0016] In a preferred embodiment, the power manager includes a vehicle power supply, a backup battery and a power management chip. The vehicle terminal has two power supply modes. The vehicle power supply is the first power supply for the vehicle terminal; the backup battery is the second power supply for the vehicle terminal. When the vehicle power supply is abnormally powered off, it automatically switches to the backup battery; the power management chip has an output control relay switching, which can charge the backup battery when the vehicle power supply is normally powered, thereby realizing the charging and discharging of the backup battery.

[0017] In a preferred embodiment, the power supply process of the vehicle terminal is that after the input power passes through the input protection circuit, it is converted into VDD_3.3v power through LDO, and then converted into VDD_1.8v power through LDO. These two power supplies are converted into AP_3.3v and AP_1.8v power supplies through independent LDO converters to power the AP's peripheral eMMC and DDR. The specific steps are as follows:

[0018] Step A1, one LDO is converted into VDD_3.3v and one LDO is converted into CAN_5v power supply, which supplies power to the MCU and the peripheral CAN transceiver and A / D converter of the MCU unit;

[0019] Step A2, one LDO is converted to P_3.8v to supply power to the 5G module, P_3.8v is converted to power wifi_3.3v and wifi_1.8v through LDO, and P_3.8v is converted to independent power supplies Phy_3.3v and Phy_1.8v of Ethernet through LDO, P_3.8v is converted to P_3.3v and P_1.8v through LDO to supply power to the external eMMC and audio codec of the 5G module;

[0020] Among them, the LDO is a low-dropout linear regulator, which provides a stable DC voltage between the input voltage and the output voltage, and can maintain the stability of the output voltage even when the input voltage changes or the load current changes; the VDD represents the power supply voltage, and VDD_3.3v and VDD_1.8v represent power supply voltages of 3.3 volts and 1.8 volts respectively.

[0021] In a preferred embodiment, the PCB board is a printed circuit board, a basic board for supporting and connecting electronic components, adopts an 8-layer board design, places important signal lines on the inner layer for wiring, and the connector is designed on the same side. It can be modified according to the vehicle situation. The peripheral devices around the 5G module are placed near the interface PIN pins that communicate with the 5G module, and the built-in antenna is placed on the edge of the board.

[0022] The beneficial effects of the present invention are: a 5G V2X vehicle-mounted terminal device includes a core processor, a power manager, a PCB board, and an external interface; wherein the core processor includes a 5G module, an AP processor and an MCU; the power manager includes an on-board power supply, a backup battery and a power management chip; the PCB board is a printed circuit board, which carries the connection and wiring of the core processor, the power manager, the 5G module, and other external devices; the external interface includes a peripheral device interface, a storage interface, an encryption chip docking interface, a debugging interface, an expansion card slot and an antenna interface. By integrating the 5G module and the V2X module through the core board, Uu air interface communication and PC5 air interface communication are supported, thereby achieving an economical design and better meeting different communication needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a core board and a power manager of the present invention;

[0024] Figure 2 It is a schematic diagram of the core board, power manager and various peripherals connected to the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0026] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0028] Example 1

[0029] This embodiment provides Figure 1 and Figure 2 A 5G V2X vehicle-mounted terminal device is shown, which specifically includes a core processor, a power manager, a PCB board, and an external interface; wherein the core processor includes a 5G module, an AP processor and an MCU unit; the power manager includes an on-board power supply, a backup battery and a power management chip; the PCB board is a printed circuit board, which carries the connection and wiring of the core processor, the power manager, the 5G module, and other external devices; the external interface includes a peripheral device interface, a storage interface, an encryption chip docking interface, a debugging interface, an expansion card slot and an antenna interface.

[0030] In this embodiment, it is specifically necessary to explain the core processor, which includes a 5G module, an AP processor and an MCU unit. The 5G module implements the 5G networking function and the V2X communication function, and the peripherals include wifi, GNSS, eMMC, eSIM, IMU, HSM, Eth-phy, USB, CODEC;

[0031] Among them, Wi-Fi provides the vehicle's Wi-Fi function and can connect to Wi-Fi for debugging; the GNSS antenna receives positioning signals from the global navigation satellite system; eMMC is the FLAS memory of the 5G module, storing system files, program executable files and configuration files; eSIM is an embedded electronic user identification card that accesses the operator's network; IMU is an inertial measurement unit that provides the vehicle's three-axis acceleration and angular rate, and combines positioning signals for combined navigation; HSM is a hardware encryption module; Eth-phy communicates by connecting to the T1 connector; USB is used to connect to a computer for debugging and data transmission; CODEC is an audio codec that connects to a microphone and speaker to provide the vehicle's emergency call function;

[0032] The AP processor is used to run the V2X protocol stack and is externally connected to eMMC, DDR, HSM and UART debugging interfaces, wherein the AP processor and the 5G module communicate via USB3.0, SPI and MCU, the AP is powered by the power manager and wakes up from sleep, DDR provides RAM for operation, and HSM provides hardware encryption function;

[0033] The MCU unit is responsible for processing vehicle-side signals, connecting three CAN transceivers, one LIN transceiver, and multiple A / D converters to collect hardware buttons on the vehicle, including emergency call button signals, and connects to the car remote control key RKE and Bluetooth BLE to send the collected data to the 5G module and AP processor via SPI, responsible for the power management of the entire T-box and the realization of the sleep wake-up function;

[0034] The 5G module is connected to a 4×4 MIMO antenna, covering all frequency bands from 1G to 5G, realizing the networking function of the T-box, and connecting to two V2X antennas for V2X communication.

[0035] In this embodiment, it is specifically necessary to explain the power manager, which includes a vehicle-mounted power supply, a backup battery and a power management chip. The vehicle-mounted terminal has two power supply modes, and the vehicle-mounted power supply is the first power supply of the vehicle-mounted terminal;

[0036] The power supply process of the vehicle terminal is that after the input power passes through the input protection circuit, it is converted into VDD_3.3v power through LDO, and then converted into VDD_1.8v power through LDO. These two power supplies are converted into AP_3.3v and AP_1.8v power supplies through independent LDO converters to power the AP's peripheral eMMC and DDR. The specific steps are as follows:

[0037] Step A1, one LDO is converted into VDD_3.3v and one LDO is converted into CAN_5v power supply, which supplies power to the MCU and the peripheral CAN transceiver and A / D converter of the MCU unit;

[0038] Step A2, one LDO is converted to P_3.8v to supply power to the 5G module, P_3.8v is converted to power wifi_3.3v and wifi_1.8v through LDO, and P_3.8v is converted to independent power supplies Phy_3.3v and Phy_1.8v of Ethernet through LDO, P_3.8v is converted to P_3.3v and P_1.8v through LDO to supply power to the external eMMC and audio codec of the 5G module;

[0039] Wherein, the LDO is a low voltage drop linear regulator, which is used to provide a stable DC voltage between the input voltage and the output voltage, and can maintain the stability of the output voltage even when the input voltage changes and the load current changes; the VDD represents the power supply voltage, and VDD_3.3v and VDD_1.8v represent the power supply voltage of 3.3 volts and 1.8 volts respectively;

[0040] The backup battery is the second power supply for the vehicle terminal. When the vehicle power supply fails abnormally, it automatically switches to the backup battery.

[0041] The power management chip has an output control relay for switching, which can charge the backup battery when the vehicle power supply is normal, thereby realizing the charging and discharging of the backup battery.

[0042] In this embodiment, the PCB board specifically needs to be explained. The PCB board is a printed circuit board, a basic board for supporting and connecting electronic components. The electronic components are connected together by chemical methods to form a complete circuit, which carries the connection and wiring of the core processor, power manager, 5G module, and other external devices;

[0043] Among them, the PCB board adopts an 8-layer design, with important signal lines placed on the inner layer for wiring. The connector is designed on the same side and can be modified according to the vehicle situation. The peripheral devices around the 5G module are placed near the interface PIN pins that communicate with the 5G module; to ensure RF performance, other components should be avoided between the 5G module and the RF connector; the built-in antenna is placed on the edge of the board, and the final position needs to be determined based on the loading position and the vehicle environment; BLE and RKE use built-in or external antennas based on actual effects; the two WIFI antennas are placed at 90 degrees to avoid co-frequency interference; the exposed copper on the back of the 5G module is designed for heat dissipation, and a heat sink position is reserved above the 5G module.

[0044] In this embodiment, it should be specifically noted that the wake-up source of the vehicle terminal includes six types of signals, five of which are directly connected to the MCU unit, and one is sent to the 5G module; the five types of wake-up sources connected to the MCU unit are:

[0045] 1. CAN wake-up source of the vehicle-mounted CAN network. When the T-box is dormant, the V2X function does not work, and other ECUs in the vehicle network can wake up the T-box through the CAN dormant wake-up signal; the CAN is a controller area network, a commonly used communication protocol inside the vehicle, used for communication and data transmission between various electronic control units ECU of the vehicle; the T-box is a telematics box, used to connect the vehicle with the external network, and provide vehicle remote monitoring, remote control, vehicle positioning, and information service functions;

[0046] 2. Remote control key RKE wake-up source: when the vehicle is dormant and the remote control key approaches the vehicle to a certain distance, RKE activates the T-box, and the MCU wakes up first. The MCU unit notifies the 5G module and AP to wake up;

[0047] 3. Bluetooth wake-up source, similar to RKE, can wake up the T-box and activate V2X functions;

[0048] 4. Emergency call button wake-up source: when the vehicle is in sleep mode, just press the e-Call button to wake up the T-box immediately and activate all functions;

[0049] 5. Cloud server wake-up source: When the 5G module is in sleep mode, the cloud server can activate the T-box by sending a text message. After receiving the text message, the 5G module wakes up the MCU unit, and the MCU unit then notifies the 5G module and AP to work normally.

[0050] The above is a detailed introduction to a 5GV2X vehicle-mounted terminal device provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0051] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0053] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0054] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0055] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0056] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A 5G V2X vehicle-mounted terminal device, characterized in that: It includes a core processor, a power manager, a PCB board, and an external interface; wherein the core processor includes a 5G module, an AP processor and an MCU unit; the power manager includes an on-board power supply, a backup battery and a power management chip; the PCB board is a printed circuit board, which carries the connection and wiring of the core processor, the power manager, the 5G module, and other external devices; the external interface includes a peripheral device interface, a storage interface, an encryption chip docking interface, a debugging interface, an expansion card slot and an antenna interface.

2. A 5G V2X vehicle-mounted terminal device according to claim 1, characterized in that: The 5G module can realize 5G networking function and V2X communication function, and its peripherals include wifi, GNSS, eMMC, eSIM, IMU, HSM, Eth-phy, USB, and CODEC.

3. A 5G V2X vehicle-mounted terminal device according to claim 1, characterized in that: The AP processor is used to run the V2X protocol stack and is externally connected to eMMC, DDR, HSM and UART debugging interfaces, wherein the eMMC is used as the system's FLAS memory to store system files, program executable files and configuration files, DDR provides RAM for operation, and HSM provides hardware encryption function. The AP processor is powered by the power manager and wakes up from sleep.

4. A 5G V2X vehicle-mounted terminal device according to claim 1, characterized in that: The MCU unit is responsible for processing vehicle-side signals, connecting three CAN transceivers, one LIN transceiver, and multiple A / D converters to collect data from hardware buttons on the vehicle and send the collected data to the 5G module and AP processor via SPI.

5. A 5G V2X vehicle-mounted terminal device according to claim 1, characterized in that: The power manager includes a vehicle power supply, a backup battery and a power management chip. The vehicle terminal has two power supply modes. The vehicle power supply is the first power supply for the vehicle terminal; the backup battery is the second power supply for the vehicle terminal. When the vehicle power supply is abnormally powered off, it automatically switches to the backup battery; the power management chip has an output control relay switching, which can charge the backup battery when the vehicle power supply is normally powered, thereby realizing the charging and discharging of the backup battery.

6. A 5G V2X vehicle-mounted terminal device according to claim 5, characterized in that: The vehicle power supply is the first power supply for the vehicle terminal. The power supply process of the vehicle terminal is that after the input power passes through the input protection circuit, it is converted into VDD_3.3v power through LDO, and then converted into VDD_1.8v power through LDO. These two power supplies are converted into AP_3.3v and AP_1.8v power supplies through independent LDO converters to power the AP's peripheral eMMC and DDR. The specific steps are as follows: Step A1, one LDO is converted into VDD_3.3v and one LDO is converted into CAN_5v power supply, which supplies power to the MCU and the peripheral CAN transceiver and A / D converter of the MCU unit; Step A2, one LDO is converted to P_3.8v to supply power to the 5G module, P_3.8v is converted to power wifi_3.3v and wifi_1.8v through LDO, and P_3.8v is converted to independent power supplies Phy_3.3v and Phy_1.8v of Ethernet through LDO, P_3.8v is converted to P_3.3v and P_1.8v through LDO to supply power to the external eMMC and audio codec of the 5G module.

7. A 5G V2X vehicle-mounted terminal device according to claim 1, characterized in that: The PCB board is a printed circuit board with an 8-layer design. Important signal lines are routed on the inner layer, connectors are designed on the same side, peripheral devices around the 5G module are placed near the interface PIN pins that communicate with the 5G module, and the built-in antenna is placed on the edge of the board.

8. A 5G V2X vehicle-mounted terminal device according to claim 2, characterized in that: The wifi provides the vehicle's wireless network connection function; the GNSS antenna receives the positioning signal of the global navigation satellite system; the eMMC is the FLAS memory of the 5G module, storing system files, program executable files and configuration files; the eSIM is an embedded electronic user identification card, which accesses the operator's network; the IMU is an inertial measurement unit, which provides the vehicle's three-axis acceleration and angular rate, and combines the positioning signal for combined navigation; the HSM is a hardware encryption module; the Eth-phy communicates by connecting the T1 connector; USB is used to connect to a computer for debugging and data transmission; CODEC is an audio codec that connects to a microphone and speaker and provides the vehicle's emergency call function.

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