Vehicle terminal

Abstract

The utility model provides a kind of vehicle terminal, it is related to vehicle networking technical field, vehicle terminal includes: control component and N antenna components;Each antenna component includes one switch module and N transceiving antennas;N transceiving antennas in one antenna component are connected with switch module in N antenna components respectively, and one transceiving antenna in N transceiving antennas in one antenna component is connected with switch module in one antenna component;Each switch module is connected with control component;In the case where control component detects first antenna component failure, control component sends target control signal to the switch module of second antenna component, and target control signal is used to control the switch module of second antenna component connection N transceiving antennas open and transceive V2X data.The utility model can switch to second antenna component to continue transceiving V2X data when first antenna component fails, improve the stability and reliability of vehicle terminal.

Description

Technical Field

[0001] This utility model relates to the field of vehicle networking technology, and in particular to an in-vehicle terminal. Background Technology

[0002] Vehicle to Everything (V2X) technology is being used more and more widely in intelligent vehicle terminals, and it has become an indispensable part of intelligent driving in some closed scenarios such as mining areas. In some intelligent driving technology solutions, such as unmanned safe driving and collision warning, V2X technology is heavily relied upon.

[0003] Currently, the structure of vehicle-mounted terminals based on V2X technology is as follows: Figure 1 As shown, it typically consists of three parts: a central processing unit (CPU), a V2X module, and an antenna assembly. The antenna assembly uses one antenna (TX) to transmit V2X signals and two antennas (RX) to receive V2X signals. The CPU, as the application processor, mainly implements the application processing of V2X data and enables early warning for various application scenarios. The V2X module mainly implements the protocol stack processing of Long Term Evolution-Vehicle (LTE-V).

[0004] However, existing vehicle terminals based on V2X technology cannot continue to send V2X signals when the V2X module or CPU crashes (or restarts). From the perspective of other vehicles, the vehicle to which the vehicle terminal belongs will disappear from the map they are traveling on. Even if the recovery time is within 1 minute, there is still a risk of vehicle collision.

[0005] Therefore, existing vehicle terminals based on V2X technology suffer from poor stability and reliability. Utility Model Content

[0006] This utility model discloses a vehicle-mounted terminal to solve the problems of poor stability and reliability of existing vehicle-mounted terminals based on V2X technology.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] This utility model embodiment provides a vehicle-mounted terminal, including:

[0009] The system consists of a control component and N antenna components, where N is an integer greater than 2.

[0010] Each of the antenna assemblies includes a switching module and N transceiver antennas;

[0011] In this configuration, N transceiver antennas in one antenna assembly are respectively connected to the switch modules in the N antenna assemblies, and one of the transceiver antennas in one antenna assembly is connected to the switch module in one antenna assembly; each switch module is connected to the control component.

[0012] If the control component detects a fault in the first antenna component, the control component sends a target control signal to the switching module of the second antenna component. The target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna component to turn on and transmit and receive V2X data.

[0013] The first antenna component is at least one of the N antenna components, and the second antenna component is at least one non-faulty antenna component other than the first antenna component among the N antenna components.

[0014] Optionally, the switch module includes an antenna transceiver switch and a vehicle-to-everything (V2X) communication module connected to the antenna transceiver switch;

[0015] One of the antenna transceiver switches is connected to N of the transceiver antennas;

[0016] The V2X communication module is used to: control N transceiver antennas to turn on and transmit / receive V2X data via the antenna transceiver switch, or control N transceiver antennas to turn off and stop transmitting / receiving V2X data via the antenna transceiver switch.

[0017] Optionally, the control component includes a logic processing unit and a central processing unit;

[0018] The logic processing unit is used for:

[0019] Power-on control is applied to the antenna assembly;

[0020] Send a control signal to the switch module to control the transceiver antenna to turn on and transmit / receive V2X data, or control the transceiver antenna to turn off and stop transmitting / receiving V2X data;

[0021] Detect whether the antenna assembly is faulty;

[0022] The central processing unit is used for:

[0023] The switching module receives V2X data received by the transceiver antenna.

[0024] V2X data is sent to the switching module so that the transceiver antenna can transmit V2X data.

[0025] Optionally, the logic processing unit is further configured to send an indication signal to the central processing unit, the indication signal being used to indicate a fault in the first antenna assembly;

[0026] Specifically, the central processing unit is used to receive the indication signal and send the target control signal to the logic processing unit;

[0027] The logic processing unit is also used to send the target control signal to the switching module of the second antenna assembly.

[0028] Optionally, the control component is used to send self-test signals to the third antenna component and the fourth antenna component, the self-test signals being used to instruct the first switch module to turn on the first transceiver antenna and turn off the second transceiver antenna, and to instruct the second switch module to turn on the third transceiver antenna and turn off the fourth transceiver antenna;

[0029] The first transceiver antenna transmits V2X data, and the third transceiver antenna receives V2X data.

[0030] The third transceiver antenna transmits V2X data, and the first transceiver antenna receives V2X data.

[0031] Wherein, the first switch module is the switch module of the third antenna assembly, the first transceiver antenna is the transceiver antenna in the third antenna assembly connected to the first switch module, and the second transceiver antenna is the transceiver antenna connected to the first switch module other than the first transceiver antenna; the second switch module is the switch module of the fourth antenna assembly, the third transceiver antenna is the transceiver antenna in the fourth antenna assembly connected to the second switch module, and the fourth transceiver antenna is the transceiver antenna connected to the second switch module other than the first transceiver antenna.

[0032] Optionally, the transceiver antenna is a bidirectional amplifier (BDA) antenna.

[0033] Optionally, the antenna assembly further includes a Global Navigation Satellite System (GNSS) antenna and a GNSS control module connected to the GNSS antenna;

[0034] The GNSS control module is used to control the GNSS antenna to turn on and receive satellite signals, and to control the GNSS antenna to turn off and stop receiving satellite signals.

[0035] Optionally, N equals 2.

[0036] Optionally, the target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna assembly to turn on and take turns transmitting and receiving V2X data.

[0037] The beneficial effects of this utility model are:

[0038] The vehicle-mounted terminal provided by this utility model includes a control component and N (N is an integer greater than 2) antenna components. Each antenna component includes a switch module and N transceiver antennas. The N transceiver antennas in one antenna component are respectively connected to the switch modules in the N antenna components. Furthermore, one of the transceiver antennas in one antenna component is connected to the switch module in that antenna component. Each switch module is connected to the control component. In other words, the vehicle-mounted terminal provided by this utility model includes multiple antenna components and a control component connected to these multiple antenna components. When the control component detects a fault in at least one antenna component (i.e., the first antenna component), it sends a target control signal to at least one non-faulty antenna component (i.e., the second antenna component) to control the N transceiver antennas connected to the second antenna component to turn on and transmit / receive V2X data, thus completing the switching of the faulty antenna component. When the first antenna component fails and cannot continue transmitting / receiving V2X data, the system can switch to the second antenna component to continue transmitting / receiving V2X data, avoiding collisions with the vehicle to which the vehicle-mounted terminal belongs and improving the stability and reliability of the vehicle-mounted terminal. Attached Figure Description

[0039] Figure 1 This is a schematic diagram showing the structure of the vehicle-mounted terminal based on V2X technology provided by this utility model;

[0040] Figure 2 This is a schematic diagram showing the structure of the vehicle-mounted terminal provided in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram showing the connection of the V2X communication module, antenna transceiver switch, and N transceiver antennas provided in an embodiment of the present invention.

[0042] Figure 4 A flowchart illustrating the antenna control method provided in this embodiment of the present invention;

[0043] Figure 5 This is a flowchart illustrating the self-test process of the transceiver antenna provided in this embodiment of the present invention.

[0044] Figure 6 This is a flowchart illustrating the specific process of the antenna control method provided in this embodiment of the present invention. Detailed Implementation

[0045] To make the technical problems, technical solutions, and advantages of this application clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0046] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0047] In the various embodiments of this application, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0048] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, "A or B" covers three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0049] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc.; an indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0050] To address the issues of poor stability and reliability in existing V2X-based vehicle terminals, this invention provides a vehicle terminal.

[0051] like Figure 2 As shown, this utility model embodiment provides a vehicle-mounted terminal, including:

[0052] The system consists of a control component and N antenna components, where N is an integer greater than 2.

[0053] The number of control components is one.

[0054] For example, N equals 2, meaning the vehicle terminal includes one control component and two antenna components; N equals 3, meaning the vehicle terminal includes one control component and three antenna components; and N equals 4, meaning the vehicle terminal includes one control component and four antenna components.

[0055] like Figure 2 As shown, the vehicle-mounted terminal includes a control component and two antenna components.

[0056] Each of the antenna assemblies includes a switching module and N transceiver antennas.

[0057] For example, if N equals 2, the vehicle terminal includes one control component and two antenna components, each antenna component including one switch module and two transceiver antennas; if N equals 3, the vehicle terminal includes one control component and three antenna components, each antenna component including one switch module and three transceiver antennas; and if N equals 4, the vehicle terminal includes one control component and four antenna components, each antenna component including one switch module and four transceiver antennas.

[0058] N transceiver antennas in an antenna assembly are respectively connected to the switching modules in the N antenna assemblies, and one of the transceiver antennas in an antenna assembly is connected to the switching module in the antenna assembly.

[0059] Understandably, one of the N transceiver antennas in an antenna assembly is connected to a switching module.

[0060] For example, such as Figure 2 As shown, N equals 2, meaning the vehicle terminal includes one control component and two antenna components. The first antenna component includes a switch module 1, a transceiver antenna TRX0, and a transceiver antenna TRX1. The second antenna component includes a switch module 2, a transceiver antenna TRX0', and a transceiver antenna TRX1'. The transceiver antenna TRX0 is connected to the switch module 1, the transceiver antenna TRX1 is connected to the switch module 2, and the transceiver antenna TRX1' is connected to the switch module 1 and the transceiver antenna TRX0' is connected to the switch module 2.

[0061] For example, if N equals 3, the vehicle terminal includes one control component and three antenna components. The first antenna component includes a switch module 1, a transceiver antenna TRX0, a transceiver antenna TRX1, and a transceiver antenna TRX2. The second antenna component includes a switch module 2, a transceiver antenna TRX0', a transceiver antenna TRX1', and a transceiver antenna TRX2'. The third antenna component includes a switch module 3 and a transceiver antenna TRX0'. The system includes a transceiver antenna TRX1 and a transceiver antenna TRX2. Transceiver antenna TRX0 is connected to switch module 1, transceiver antenna TRX1 is connected to switch module 2, and transceiver antenna TRX2 is connected to switch module 3. Transceiver antenna TRX1' is connected to switch module 1, transceiver antenna TRX0' is connected to switch module 2, and transceiver antenna TRX2'' is connected to switch module 3. Transceiver antenna TRX2'' is connected to switch module 1, transceiver antenna TRX0'' is connected to switch module 3, and transceiver antenna TRX1'' is connected to switch module 2.

[0062] Each switch module in each antenna assembly is connected to the control assembly.

[0063] For example, if N equals 2, the vehicle terminal includes one control component and two antenna components, and the switch modules included in each antenna component are all connected to the control component; or if N equals 3, the vehicle terminal includes one control component and three antenna components, and the switch modules included in each antenna component are all connected to the control component.

[0064] If the control component detects a fault in the first antenna component, the control component sends a target control signal to the switching module of the second antenna component. The target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna component to turn on and transmit and receive V2X data. The first antenna component is at least one of the N antenna components, and the second antenna component is at least one antenna component that is not faulty, excluding the first antenna component.

[0065] Understandably, if the control component detects a failure in at least one of the N antenna components (i.e., the first antenna component), the control component sends a target control signal to the switching module of at least one of the N antenna components that is not faulty (i.e., the second antenna component). This signal controls the N transceiver antennas connected to the switching module of the second antenna component to activate and transmit / receive V2X data, thus completing the antenna component switching. In other words, if the first antenna component fails and cannot continue transmitting / receiving V2X data, the system can switch to the second antenna component to continue transmitting / receiving V2X data, avoiding collisions with the vehicle to which the vehicle terminal belongs and improving the stability and reliability of the vehicle terminal. This also prevents a blind spot caused by the failure of a single antenna component when the vehicle terminal only includes one antenna component.

[0066] It should be noted that the V2X data in this embodiment of the present invention can also be referred to as V2X message.

[0067] For example, such as Figure 2 As shown, N equals 2, meaning the vehicle terminal includes one control component and two antenna components. When the control component detects a fault in the first antenna component (which is the antenna component to which the switch module 1 belongs), the control component sends a target control signal to the switch module of the second antenna component (i.e., switch module 2) to control the N transceiver antennas (i.e., transceiver antenna TRX0' and transceiver antenna TRX1) connected to the switch module of the second antenna component (i.e., switch module 2) to turn on and transmit and receive V2X data.

[0068] For example, N equals 3, meaning the vehicle terminal includes one control component and three antenna components. When the control component detects a fault in the first antenna component (which is the antenna component to which the switch module 2 belongs), the control component sends a target control signal to the switch module of the second antenna component (i.e., switch module 1) to control the N transceiver antennas (i.e., transceiver antenna TRX0, transceiver antenna TRX1, and transceiver antenna TRX2'') connected to the switch module of the second antenna component (i.e., switch module 1) to turn on and transmit and receive V2X data.

[0069] Preferably, in order to ensure the switching function of the antenna assembly and save on the material usage of the antenna assembly, N, etc., is 2. That is, the vehicle terminal includes a control assembly and two antenna assemblies. One of the two antenna assemblies can be called the main antenna assembly, and the switching module in the main antenna assembly is called the main switching module. The other antenna assembly can be called the auxiliary antenna assembly, and the switching module in the auxiliary antenna assembly is called the auxiliary switching module.

[0070] Optionally, the target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna component to turn on and take turns transmitting and receiving V2X data.

[0071] That is, the control component controls the switching module of the second antenna component, so as to realize the turn-by-turn transmission and reception of the N transceiver antennas connected to the switching module of the second antenna component.

[0072] In some embodiments, the switch module includes an antenna transceiver switch and a vehicle-to-everything (V2X) communication module connected to the antenna transceiver switch;

[0073] In the case where N equals 2, the V2X communication module in the main switch module can also be called the main V2X communication module, and the V2X communication module in the auxiliary switch module can also be called the auxiliary V2X communication module.

[0074] One of the antenna transceiver switches is connected to N of the transceiver antennas.

[0075] For example, N equals 2, meaning the vehicle terminal includes one control component and two antenna components. The first antenna component includes a switch module 1, a transceiver antenna TRX0, and a transceiver antenna TRX1. The second antenna component includes a switch module 2, a transceiver antenna TRX0', and a transceiver antenna TRX1'. The transceiver antenna TRX0 is connected to the antenna transceiver switch in switch module 1, the transceiver antenna TRX1 is connected to the antenna transceiver switch in switch module 2, and the transceiver antenna TRX1' is connected to the antenna transceiver switch in switch module 1 and the transceiver antenna TRX0' is connected to the antenna transceiver switch in switch module 2.

[0076] For example, if N equals 3, the vehicle terminal includes one control component and three antenna components. The first antenna component includes a switch module 1, a transceiver antenna TRX0, a transceiver antenna TRX1, and a transceiver antenna TRX2. The second antenna component includes a switch module 2, a transceiver antenna TRX0', a transceiver antenna TRX1', and a transceiver antenna TRX2'. The third antenna component includes a switch module 3, a transceiver antenna TRX0'', a transceiver antenna TRX1'', and a transceiver antenna TRX2''. The transceiver antennas... TRX0 connects to the antenna transceiver switch in switch module 1, TRX1 connects to the antenna transceiver switch in switch module 2, TRX2 connects to the antenna transceiver switch in switch module 3, TRX1' connects to the antenna transceiver switch in switch module 1, TRX0' connects to the antenna transceiver switch in switch module 2, TRX2' connects to the antenna transceiver switch in switch module 3, TRX2'' connects to the antenna transceiver switch in switch module 1, TRX0'' connects to the antenna transceiver switch in switch module 3, and TRX1'' connects to the antenna transceiver switch in switch module 2.

[0077] The V2X communication module is used to: control N transceiver antennas (the N transceiver antennas are transceiver antennas connected to the antenna transceiver switch) to turn on and transmit and receive V2X data via an antenna transceiver switch, or control N transceiver antennas (the N transceiver antennas are transceiver antennas connected to the antenna transceiver switch) to turn off and stop transmitting and receiving V2X data via an antenna transceiver switch.

[0078] A connection diagram of the V2X communication module, antenna transceiver switch, and N transceiver antennas is shown below. Figure 3 As shown in the diagram. N equals 2, and the antenna transceiver switch connects the transceiver antenna TRX0 in the main antenna assembly (MAIN_ANT) and the transceiver antenna TRX1' in the auxiliary antenna assembly (AUX_ANT). The V2X communication module is used to control the transceiver antennas to transmit and receive V2X data (TX / RX) via the antenna transceiver switch, to control the transceiver antennas to receive V2X data (RX) via the antenna transceiver switch, and to switch the transceiver antennas to transmit and receive V2X data via the antenna transceiver switch (“switching control”).

[0079] For example, the control transmission function of the V2X communication module includes control of primary transmission and retransmission. Figure 2 The V2X communication module shown achieves alternating transmission of TRX0 and TRX1' by controlling the antenna transmit / receive switch. During primary transmission, TRX0 connected to the V2X communication module transmits; during retransmission, TRX1' connected to the V2X communication module transmits, thus realizing the dual-transmit and dual-receive function of the vehicle terminal. The V2X communication module is responsible for modulation and demodulation of the underlying protocol stack and physical layer, and then transmits the information through the air interface via the transmit / receive antenna.

[0080] In some embodiments, the control component includes a logic processing unit and a central processing unit (CPU).

[0081] Among them, the logic processing unit mainly refers to the Complex Programmable Logic Device (CPLD) or the Microcontroller Unit (MCU).

[0082] The logic processing unit is used for the following a, b, and c:

[0083] a. Power on the antenna assembly.

[0084] Understandably, the logic processing unit is responsible for controlling the power-on timing of the vehicle terminal.

[0085] b. Send a control signal to the switch module to control the transceiver antenna to turn on and transmit / receive V2X data, or control the transceiver antenna to turn off and stop transmitting / receiving V2X data.

[0086] That is, the logic processing unit is responsible for sending control signals to the switching module to realize the path switching of the antenna component.

[0087] c. Check whether the antenna assembly is faulty.

[0088] That is, the logic processing unit is responsible for monitoring the status of the antenna assembly (or the V2X communication module in the antenna assembly).

[0089] Optionally, the logic processing unit is responsible for monitoring the status of the central processing unit. That is, if the central processing unit fails, the logic processing unit can also detect the failure and control the switching of the antenna components.

[0090] The central processing unit, also known as the application processing unit or application processor, is responsible for processing application messages.

[0091] The central processing unit is used for the following d and e:

[0092] d. Receive V2X data received by the transceiver antenna through the switch module;

[0093] e. Send V2X data to the switch module so that the transceiver antenna can send V2X data.

[0094] That is, the central processing unit sends the V2X data to the V2X communication module in the switching module via the Ethernet port, and receives V2X data, while realizing the operation and maintenance of the entire vehicle terminal and communication with the cloud control system.

[0095] It should be noted that under normal operating conditions, the CPU sends vehicle information (i.e., V2X data) to the first antenna assembly (or main antenna assembly), which then transmits the vehicle information to other vehicles. When the main antenna assembly fails, the logic processing unit detects this and notifies the CPU, which then switches between the main and second antenna assemblies (or auxiliary antenna assemblies). Furthermore, the logic processing unit can also detect CPU failures and directly control the antenna assemblies to switch and transmit important vehicle information (including vehicle location, speed, path, and status) to surrounding vehicles. This means that even when the CPU is suspended or restarted, the antenna assemblies can still transmit and receive V2X data, further enhancing the reliability of the onboard terminal in V2X communication.

[0096] The V2X data in this embodiment of the present invention includes the vehicle location, speed, path, and status of the vehicle to which the vehicle terminal belongs.

[0097] In some embodiments, the control component is used to send self-test signals to the third antenna component and the fourth antenna component, the self-test signals being used to instruct the first switch module to turn on the first transceiver antenna and turn off the second transceiver antenna, and to instruct the second switch module to turn on the third transceiver antenna and turn off the fourth transceiver antenna;

[0098] The first transceiver antenna transmits V2X data, and the third transceiver antenna receives V2X data.

[0099] The third transceiver antenna transmits V2X data, and the first transceiver antenna receives V2X data.

[0100] Wherein, the first switch module is the switch module of the third antenna assembly, the first transceiver antenna is the transceiver antenna in the third antenna assembly connected to the first switch module, and the second transceiver antenna is the transceiver antenna connected to the first switch module other than the first transceiver antenna; the second switch module is the switch module of the fourth antenna assembly, the third transceiver antenna is the transceiver antenna in the fourth antenna assembly connected to the second switch module, and the fourth transceiver antenna is the transceiver antenna connected to the second switch module other than the first transceiver antenna.

[0101] Specifically, after the vehicle terminal is powered on, the logic processing unit in the control component controls the timing of each power supply module to complete the overall board startup. After the CPU in the control component starts normally, it will determine whether to initiate a self-test of the antenna assembly. This self-test can be performed after power-on or periodically. Periodic self-tests should not affect normal V2X data transmission and reception. If the self-test passes, the next step of normal service interaction will proceed. If the self-test fails, an alarm will be output, requiring technical personnel to intervene for further investigation.

[0102] Taking the third antenna component out of N antenna components as an example, the self-test process is explained in detail. The third antenna component is any one of the N antenna components, and the fourth antenna component is any one of the N antenna components other than the third antenna component.

[0103] The self-test process is as follows: The control component sends a self-test signal to the V2X communication module in the first switch module of the third antenna assembly, and to the V2X communication module in the second switch module of the fourth antenna assembly. Based on the self-test signal, the V2X communication module in the first switch module controls the first transceiver antenna of the third antenna assembly to transmit V2X data. Based on the self-test signal, the V2X communication module in the second switch module controls the third transceiver antenna in the fourth antenna assembly to receive V2X data. At the same time, based on the self-test signal, the V2X communication module in the first switch module controls all transceiver antennas connected to the first switch module except for the first transceiver antenna to be turned off. Based on the self-test signal, the V2X communication module in the second switch module controls all transceiver antennas connected to the second switch module except for the third transceiver antenna to be turned off and disconnected without any signal, so as to perform a self-test of the transmission function of the V2X communication module and the first transceiver antenna.

[0104] The V2X communication module initiates a tester self-test. The first transceiver antenna transmits V2X data based on the self-test signal, and the third transceiver antenna receives V2X data based on the self-test signal. The system acquires first signal detection data during the process of the third transceiver antenna receiving the V2X data. The first signal detection data includes the first reception delay and / or the first reference signal receiving power (RSRP) of the third transceiver antenna receiving the V2X data. If the first reception delay is less than the first preset reception delay and / or the first RSRP is greater than the first preset RSRP, it is determined that the transmission function self-test of the V2X communication module and the first transceiver antenna has passed.

[0105] The control component sends a self-test signal to the V2X communication module in the first switch module of the third antenna assembly and to the V2X communication module in the second switch module of the fourth antenna assembly. Based on the self-test signal, the V2X communication module in the first switch module controls the first transceiver antenna of the third antenna assembly to receive V2X data. Based on the self-test signal, the V2X communication module in the second switch module controls the third transceiver antenna in the fourth antenna assembly to transmit V2X data. At the same time, based on the self-test signal, the V2X communication module in the first switch module controls all transceiver antennas connected to the first switch module except for the first transceiver antenna to turn off. Based on the self-test signal, the V2X communication module in the second switch module controls all transceiver antennas connected to the second switch module except for the third transceiver antenna to turn off and disconnect without any signal, so as to perform a self-test of the receiving function of the V2X communication module and the first transceiver antenna.

[0106] The V2X communication module initiates a tester self-test. The third transceiver antenna transmits V2X data based on the self-test signal, and the first transceiver antenna receives V2X data based on the self-test signal. Second signal detection data is obtained during the process of the first transceiver antenna receiving the V2X data. The second signal detection data includes the second reception delay and / or the second RSRP of the first transceiver antenna receiving the V2X data. If the second reception delay is less than the second preset reception delay and / or the second RSRP is greater than the second preset RSRP, it is determined that the reception function self-test of the V2X communication module and the first transceiver antenna has passed.

[0107] Optionally, the first reception delay and the second reception delay may be equal or unequal, and the first preset RSRP and the second preset RSRP may be equal or unequal.

[0108] For example, the first and second reception delays are equal, both being 20ms, and the first and second preset RSRPs are equal, both being -70dBm.

[0109] It should be noted that the first and second preset RSRPs are related to the distance between the two transmitting and receiving antennas. According to the 3GPP model, when the spacing is 1m, the theoretical single subcarrier received power is -65dBm. Considering the influence of the environment, a margin of 5dB is left. Therefore, the first and second preset RSRPs are -70dBm.

[0110] After the V2X communication module and the first transceiver antenna pass the self-test of transmitting function and receiving function, it is determined that the V2X communication module and the first transceiver antenna have passed the self-test.

[0111] After performing the self-test of the V2X communication module and the first transceiver antenna according to the above procedure, each V2X communication module and transceiver antenna for each antenna assembly can be self-tested according to the above procedure.

[0112] In some embodiments, the transceiver antenna is a bidirectional amplifier (BDA) antenna, or, more specifically, an adaptive bidirectional amplifier (BDA) antenna. This BDA antenna provides bidirectional amplification, compensating for the low transmitted signal power and signal attenuation caused by insertion loss of the RF cable.

[0113] The antenna transmit / receive switch enables dual-transmit and dual-receive functionality.

[0114] In some embodiments, such as Figure 2 As shown, the antenna assembly also includes a Global Navigation Satellite System (GNSS) antenna and a GNSS control module connected to the GNSS antenna;

[0115] The GNSS control module is used to control the GNSS antenna to turn on and receive satellite signals, and to control the GNSS antenna to turn off and stop receiving satellite signals.

[0116] In summary, the vehicle-mounted terminal provided in this embodiment is a V2X-based terminal. Through the design of the transceiver antenna layout and control logic, it achieves self-testing of the V2X communication module and transceiver antennas, enabling real-time monitoring of its V2X transmission and reception during use. Furthermore, a logic chip determines whether the vehicle-mounted terminal can promptly switch to the second antenna component if the first antenna component fails, preventing the vehicle equipped with this terminal from becoming a blind spot for other vehicles and causing collisions due to surrounding vehicles not receiving the V2X signal. This enhances the communication reliability and stability of the vehicle-mounted terminal, ensuring normal V2X signal communication even if one antenna component fails.

[0117] like Figure 4 As shown, this utility model embodiment also provides an antenna control method, applied to the vehicle-mounted terminal described above, the method comprising:

[0118] Step 401: If the control component detects a fault in the first antenna component, a target control signal is sent to the switching module of the second antenna component.

[0119] Specifically, in this step, if the control component detects that at least one of the N antenna components (i.e., the first antenna component) has failed, the control component sends a target control signal to the switching module of at least one of the N antenna components that has not failed (i.e., the second antenna component), excluding the first antenna component.

[0120] Step 402: The switching module of the second antenna assembly controls the N transceiver antennas connected to the switching module of the second antenna assembly to turn on and transmit / receive V2X data according to the target control signal.

[0121] In this step, the switching module of the second antenna component controls the N transceiver antennas connected to the switching module of the second antenna component to turn on and transmit and receive V2X data according to the target control signal, thus completing the switching of the antenna components. That is, when the first antenna component fails and cannot continue to transmit and receive V2X data, it can switch to the second antenna component to continue to transmit and receive V2X data, avoiding collisions with the vehicle to which the vehicle terminal belongs and improving the stability and reliability of the vehicle terminal.

[0122] In some embodiments, the method further includes:

[0123] The control component sends self-test signals to the third and fourth antenna components.

[0124] In one optional implementation, after the N antenna components are powered on, the control component sends a self-test signal to the third antenna component and the fourth antenna component.

[0125] After the vehicle terminal is powered on, the timing of each power supply module is controlled by the logic processing unit in the control component to complete the startup of the entire board. After the CPU in the control component starts normally, it will determine whether to initiate the self-test of the antenna component. The self-test can be initiated after power-on.

[0126] In another alternative implementation, the control component periodically sends self-test signals to the third antenna component and the fourth antenna component, i.e., performs periodic self-tests.

[0127] Periodic self-checks should not affect normal V2X data transmission and reception.

[0128] Subsequently, the first transceiver antenna transmits V2X data according to the self-test signal, and the third transceiver antenna receives V2X data according to the self-test signal, thereby obtaining the first signal detection data during the process of the third transceiver antenna receiving the V2X data;

[0129] The third transceiver antenna transmits V2X data according to the self-test signal, and the first transceiver antenna receives V2X data according to the self-test signal, thereby obtaining the second signal detection data during the process of the first transceiver antenna receiving the V2X data.

[0130] If the first signal detection data meets the first preset condition and the second signal detection data meets the second preset condition, it is determined that the first transceiver antenna has passed the self-test.

[0131] The first signal detection data includes the first reception delay and / or the first reference signal reception power RSRP of the third transceiver antenna receiving the V2X data.

[0132] The second signal detection data includes the second receive delay and / or the second RSRP of the first transceiver antenna receiving the V2X data;

[0133] The method further includes:

[0134] If the first reception delay is less than the first preset reception delay and / or the first RSRP is greater than the first preset RSRP, it is determined that the first signal detection data satisfies the first preset condition.

[0135] If the second reception delay is less than the second preset reception delay and / or the second RSRP is greater than the second preset RSRP, it is determined that the second signal detection data meets the second preset condition.

[0136] Taking the third antenna component out of N antenna components as an example, the self-test process is explained in detail. The third antenna component is any one of the N antenna components, and the fourth antenna component is any one of the N antenna components other than the third antenna component.

[0137] The self-test process is as follows: The control component sends a self-test signal to the V2X communication module in the first switch module of the third antenna assembly, and to the V2X communication module in the second switch module of the fourth antenna assembly. Based on the self-test signal, the V2X communication module in the first switch module controls the first transceiver antenna of the third antenna assembly to transmit V2X data. Based on the self-test signal, the V2X communication module in the second switch module controls the third transceiver antenna in the fourth antenna assembly to receive V2X data. At the same time, based on the self-test signal, the V2X communication module in the first switch module controls all transceiver antennas connected to the first switch module except for the first transceiver antenna to be turned off. Based on the self-test signal, the V2X communication module in the second switch module controls all transceiver antennas connected to the second switch module except for the third transceiver antenna to be turned off and disconnected without any signal, so as to perform a self-test of the transmission function of the V2X communication module and the first transceiver antenna.

[0138] The V2X communication module initiates a tester self-test. The first transceiver antenna transmits V2X data based on the self-test signal, and the third transceiver antenna receives V2X data based on the self-test signal. The system acquires first signal detection data during the process of the third transceiver antenna receiving the V2X data. The first signal detection data includes the first reception delay and / or the first reference signal receiving power (RSRP) of the third transceiver antenna receiving the V2X data. If the first reception delay is less than the first preset reception delay and / or the first RSRP is greater than the first preset RSRP, it is determined that the transmission function self-test of the V2X communication module and the first transceiver antenna has passed.

[0139] The control component sends a self-test signal to the V2X communication module in the first switch module of the third antenna assembly and to the V2X communication module in the second switch module of the fourth antenna assembly. Based on the self-test signal, the V2X communication module in the first switch module controls the first transceiver antenna of the third antenna assembly to receive V2X data. Based on the self-test signal, the V2X communication module in the second switch module controls the third transceiver antenna in the fourth antenna assembly to transmit V2X data. At the same time, based on the self-test signal, the V2X communication module in the first switch module controls all transceiver antennas connected to the first switch module except for the first transceiver antenna to turn off. Based on the self-test signal, the V2X communication module in the second switch module controls all transceiver antennas connected to the second switch module except for the third transceiver antenna to turn off and disconnect without any signal, so as to perform a self-test of the receiving function of the V2X communication module and the first transceiver antenna.

[0140] The V2X communication module initiates a tester self-test. The third transceiver antenna transmits V2X data based on the self-test signal, and the first transceiver antenna receives V2X data based on the self-test signal. Second signal detection data is obtained during the process of the first transceiver antenna receiving the V2X data. The second signal detection data includes the second reception delay and / or the second RSRP of the first transceiver antenna receiving the V2X data. If the second reception delay is less than the second preset reception delay and / or the second RSRP is greater than the second preset RSRP, it is determined that the reception function self-test of the V2X communication module and the first transceiver antenna has passed.

[0141] Optionally, the first reception delay and the second reception delay may be equal or unequal, and the first preset RSRP and the second preset RSRP may be equal or unequal.

[0142] The following is combined with Figure 5 This explains the self-test procedure for the transmitting and receiving antennas:

[0143] After the vehicle terminal (or N antenna components) is powered on, a self-test of the V2X communication module and transceiver antennas is initiated to determine whether the self-test is enabled, i.e., whether the self-test can be performed. If the self-test is not enabled (No), proceed directly to the next step, such as using it directly. If the self-test is enabled (Yes), perform the self-test according to the above process to determine whether the self-test passes. If it passes (Yes), proceed directly to the next step, such as using it. If it fails (No), issue an alarm.

[0144] In some embodiments, the switching module of the second antenna assembly controls the N transceiver antennas connected to the switching module of the second antenna assembly to turn on and transmit / receive V2X data according to the target control signal, including:

[0145] The switching module of the second antenna assembly controls the N transceiver antennas connected to the switching module of the second antenna assembly to turn on and take turns transmitting and receiving V2X data according to the target control signal.

[0146] That is, the control component controls the switching module of the second antenna component, so as to realize the turn-by-turn transmission and reception of the N transceiver antennas connected to the switching module of the second antenna component.

[0147] It should be noted that the antenna control method provided in this utility model embodiment is applied to the vehicle terminal as described above. Therefore, all embodiments of the vehicle terminal described above are applicable to this antenna control method and can achieve the same or similar technical effects.

[0148] The following is combined with Figure 6 Taking a vehicle-mounted terminal comprising two antenna assemblies as an example, the specific flow of the antenna control method provided in this embodiment is explained. The first antenna assembly is the main antenna assembly, and the second antenna assembly is the auxiliary antenna assembly. The specific flow is as follows:

[0149] Perform CPU status monitoring. If the CPU status is normal, proceed to branch one; if the CPU status is abnormal, proceed to branch two.

[0150] Branch 1: Monitor the status of the main antenna assembly; when the main antenna assembly is in normal condition and no fault has occurred, the CPU controls the V2X data transceiver port to be the main antenna assembly; when the main antenna assembly is in abnormal condition or has failed, monitor the status of the auxiliary antenna assembly; when the auxiliary antenna assembly is in normal condition and no fault has occurred, the CPU controls the V2X data transceiver port to be the auxiliary antenna assembly; when the auxiliary antenna assembly is in abnormal condition or has failed, generate a critical alarm message and conduct personnel investigation.

[0151] Branch 2: Monitor the status of the main antenna assembly; when the main antenna assembly is in normal condition and no fault has occurred, the logic processing unit controls the V2X data transceiver port to be the main antenna assembly; when the main antenna assembly is in abnormal condition or has failed, monitor the status of the auxiliary antenna assembly; when the auxiliary antenna assembly is in normal condition and no fault has occurred, the logic processing unit controls the V2X data transceiver port to be the auxiliary antenna assembly; when the auxiliary antenna assembly is in abnormal condition or has failed, generate a critical alarm message and conduct personnel investigation.

[0152] The above describes the preferred embodiments of this utility model. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this utility model, and these improvements and modifications are also within the protection scope of this utility model.

Claims

1. A vehicle-mounted terminal, characterized in that, include: The system consists of a control component and N antenna components, where N is an integer greater than 2. Each of the antenna assemblies includes a switching module and N transceiver antennas; In this configuration, N transceiver antennas in one antenna assembly are respectively connected to the switch modules in the N antenna assemblies, and one of the transceiver antennas in one antenna assembly is connected to the switch module in one antenna assembly; each switch module is connected to the control component. If the control component detects a fault in the first antenna component, the control component sends a target control signal to the switching module of the second antenna component. The target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna component to turn on and transmit and receive V2X data. The first antenna component is at least one of the N antenna components, and the second antenna component is at least one non-faulty antenna component other than the first antenna component among the N antenna components.

2. The vehicle-mounted terminal according to claim 1, characterized in that, The switch module includes an antenna transceiver switch and a vehicle-to-everything (V2X) communication module connected to the antenna transceiver switch. One of the antenna transceiver switches is connected to N of the transceiver antennas; The V2X communication module is used to: control N transceiver antennas to turn on and transmit / receive V2X data via the antenna transceiver switch, or control N transceiver antennas to turn off and stop transmitting / receiving V2X data via the antenna transceiver switch.

3. The vehicle-mounted terminal according to claim 1, characterized in that, The control components include a logic processing unit and a central processing unit; The logic processing unit is used for: Power-on control is applied to the antenna assembly; Send a control signal to the switch module to control the transceiver antenna to turn on and transmit / receive V2X data, or control the transceiver antenna to turn off and stop transmitting / receiving V2X data; Detect whether the antenna assembly is faulty; The central processing unit is used for: The switching module receives V2X data received by the transceiver antenna. V2X data is sent to the switching module so that the transceiver antenna can transmit V2X data.

4. The vehicle-mounted terminal according to claim 3, characterized in that, The logic processing unit is also configured to send an indication signal to the central processing unit, the indication signal being used to indicate a fault in the first antenna assembly; Specifically, the central processing unit is used to receive the indication signal and send the target control signal to the logic processing unit; The logic processing unit is also used to send the target control signal to the switching module of the second antenna assembly.

5. The vehicle-mounted terminal according to claim 1, characterized in that, The control component is used to send self-test signals to the third antenna component and the fourth antenna component. The self-test signals are used to instruct the first switch module to turn on the first transceiver antenna and turn off the second transceiver antenna, and to instruct the second switch module to turn on the third transceiver antenna and turn off the fourth transceiver antenna. The first transceiver antenna transmits V2X data, and the third transceiver antenna receives V2X data. The third transceiver antenna transmits V2X data, and the first transceiver antenna receives V2X data. Wherein, the first switch module is the switch module of the third antenna assembly, the first transceiver antenna is the transceiver antenna in the third antenna assembly connected to the first switch module, and the second transceiver antenna is the transceiver antenna connected to the first switch module other than the first transceiver antenna; the second switch module is the switch module of the fourth antenna assembly, the third transceiver antenna is the transceiver antenna in the fourth antenna assembly connected to the second switch module, and the fourth transceiver antenna is the transceiver antenna connected to the second switch module other than the first transceiver antenna.

6. The vehicle-mounted terminal according to any one of claims 1 to 5, characterized in that, The transceiver antenna is a bidirectional amplifier (BDA) antenna.

7. The vehicle-mounted terminal according to claim 1, characterized in that, The antenna assembly also includes a Global Navigation Satellite System (GNSS) antenna and a GNSS control module connected to the GNSS antenna; The GNSS control module is used to control the GNSS antenna to turn on and receive satellite signals, and to control the GNSS antenna to turn off and stop receiving satellite signals.

8. The vehicle-mounted terminal according to claim 1, characterized in that, N equals 2.

9. The vehicle-mounted terminal according to claim 1, characterized in that, The target control signal is used to control the N transceiver antennas connected to the switching module of the second antenna assembly to turn on and take turns transmitting and receiving V2X data.

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