CN116801366A - Power compensation methods, V2X systems, vehicles and storage media - Google Patents

Abstract

The application provides a power compensation method, a V2X system, a vehicle and a storage medium. The V2X antenna transmits a downlink communication signal to the V2X module in the power compensation method, the V2X module responds to the downlink communication signal and feeds back an uplink communication signal to the V2X antenna, so that output power of the V2X signal is given to the V2X antenna, wherein the output power of the V2X signal is expected transmission power of the V2X module, and then the V2X antenna performs power compensation based on the output power of the V2X signal, so that the purpose that actual transmission power of the V2X signal is consistent with expected transmission power of the V2X module is achieved. Based on the uplink and downlink communication process, the V2X antenna always uses the output power of the V2X signal as a target value to adjust the actual transmitting power of the V2X signal, and the power compensation precision is improved.

Description

Power compensation methods, V2X systems, vehicles and storage media

Technical field

This application relates to the field of wireless communication technology, and specifically relates to a power compensation method, V2X system, vehicle and storage medium.

Background technique

V2X stands for Vehicle to everything, which is the connection between vehicles and everything. X represents all traffic participants such as other vehicles, transportation infrastructure, and pedestrians.

In the traditional solution, the V2X system includes a V2X antenna and a V2X module. The V2X antenna and the V2X module are connected through a coaxial cable. The V2X antenna is generally installed in multiple different locations on the vehicle, such as on the roof, front and rear windshields. Glass, front and rear bumpers, left and right rearview mirrors, etc. V2X modules are generally integrated with vehicle-mounted equipment. It can be seen that the installation locations of the V2X module and the V2X antenna are relatively far apart. In addition, the working frequency band of the radio frequency signal of the V2X antenna is 5.85~5.925GHz. Longer signal transmission distance in this frequency band will lead to greater signal loss.

Large signal loss will seriously reduce the signal power of the V2X signal actually sent by the V2X antenna, and will also reduce the signal power of the received V2X signal, resulting in a decline in communication quality and affecting the communication reliability of vehicle-mounted equipment.

Contents of the invention

The embodiments of this application are dedicated to providing a power compensation method, V2X system, vehicle and storage medium, which are introduced from the following aspects below.

In the first aspect, a power compensation method is provided. The method is applied to the V2X antenna of the V2X system. The V2X system also includes a V2X module. The method includes: sending a downlink communication signal to the V2X module, and the downlink communication signal carries the antenna status. Information, the antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information; receiving the uplink communication signal sent by the V2X module in response to the downlink communication signal, the uplink communication signal carries the V2X module output The output power of the V2X signal; power compensation is performed based on the output power.

In one embodiment, performing power compensation based on the output power includes: obtaining the actual transmission power of the V2X signal transmitted by the V2X antenna; determining the power compensation value based on the difference between the actual transmission power and the output power; and performing power compensation based on the power compensation value.

In one embodiment, sending a downlink communication signal to the V2X module includes: receiving an instruction from the V2X module, and sending a downlink communication signal to the V2X module based on the instruction.

In one embodiment, sending a downlink communication signal to the V2X module includes: periodically sending a downlink communication signal to the V2X module.

In one embodiment, the V2X antenna includes a receiving circuit and a transmitting circuit. The receiving circuit includes a low noise amplifier (LNA), and the transmitting circuit includes a power amplifier (PA). Power compensation is performed based on the output power, including: obtaining the ambient temperature value; The ambient temperature value determines the gain of the low-noise amplifier (LNA) and the gain of the power amplifier (PA); power compensation is based on the output power and the gain of the low-noise amplifier (LNA), or, alternatively, based on the output power and the gain of the power amplifier (PA) Perform power compensation.

In the second aspect, a power compensation method is provided, which is applied to the V2X module of the V2X system. The V2X system also includes a V2X antenna. The method includes: receiving a downlink communication signal sent by the V2X antenna; the downlink communication signal carries antenna status information, The antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information; in response to the downlink communication signal, an uplink communication signal is sent to the V2X antenna, and the uplink communication signal carries the output of the V2X signal output by the V2X module Power, the output power is used for power compensation of the V2X antenna.

In one embodiment, the method further includes: sending a transceiver status control signal to the V2X antenna, where the transceiver status control signal is used for the V2X antenna to receive the V2X signal or transmit the V2X signal.

In the third aspect, a V2X system is provided, including a V2X antenna and a V2X module. The V2X antenna and the V2X module are connected through a coaxial cable. The V2X antenna sends a downlink communication signal to the V2X module, and the downlink communication signal carries the antenna. Status information, the antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information; the V2X module receives the downlink communication signal sent by the V2X antenna, and sends uplink communication to the V2X antenna in response to the downlink communication signal signal, the uplink communication signal carries the output power of the V2X signal output by the V2X module; the V2X antenna receives the uplink communication signal and performs power compensation based on the output power.

A fourth aspect provides a vehicle equipped with the V2X system as described in the above embodiment.

In a fifth aspect, a computer storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method as described in any one of the above embodiments is implemented.

Embodiments of the present application provide a power compensation method. In this method, the V2X antenna sends a downlink communication signal to the V2X module, and the V2X module feeds back the uplink communication signal to the V2X antenna in response to the downlink communication signal, thereby reducing the output power of the V2X signal. Given to the V2X antenna, the output power of the V2X signal is the expected transmission power of the V2X module, and then the V2X antenna performs power compensation based on the output power of the V2X signal, thereby achieving the actual transmission power of the V2X signal and the expected transmission of the V2X module. Power consistent purpose. This application is based on this uplink and downlink communication process, so that the V2X antenna always adjusts the actual transmission power of the V2X signal using the output power of the V2X signal as the target value, thereby improving the power compensation accuracy.

Description of the drawings

Figure 1 shows a schematic diagram of a V2X system.

Figure 2 shows a schematic structural diagram of a V2X system.

Figure 3 shows a schematic diagram of a power compensation method.

Figure 4 shows a flow chart of a method for power compensation according to output power.

Figure 5 shows a flow chart of a method for power compensation based on output power.

Figure 6 shows a schematic diagram of a power compensation method.

Figure 7 shows an interaction diagram of a V2X system.

Figure 8 shows a block diagram of a V2X module.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments.

With the rapid development of intelligent driving technology, vehicles need to obtain more and more real-time information from their surroundings, so V2X technology emerged as the times require.

Generally speaking, V2X antennas are installed outside the vehicle to facilitate reception of signals around the vehicle. However, the outside of the vehicle is often exposed to high temperatures, causing the ambient temperature to be too high. V2X modules are prone to operational failures in high-temperature environments, so V2X modules are not suitable for installation together with V2X antennas. At present, considering the heat dissipation problem of V2X modules, V2X modules are generally integrated with vehicle-mounted equipment.

However, this brings a new problem, that is, the distance between the V2X module and the V2X antenna is long. Since the working frequency band of the radio frequency signal of the V2X antenna is 5.85~5.925GHz, the signal loss in the cable is relatively large in this frequency band. Moreover, the farther the signal travels in the cable, the greater the loss. The increase in signal loss will lead to a reduction in the sensitivity of the V2X module when receiving V2X signals, as well as a reduction in signal power and a shortening of the communication distance when the V2X antenna transmits V2X signals. This will cause serious reliability problems in the V2X system.

Therefore, effective compensation for the signal insertion loss introduced by the RF transmission line in the car is of great significance to the communication distance in the frequency band outside the car.

In the traditional solution, the method of power compensation is to measure the actual transmit power, obtain the pre-solidified transmit power target value, and adjust the power compensator according to the actual transmit power and the transmit power target value until the actual transmit power reaches the transmit power target value. Among them, in this traditional solution, the target value of the transmission power is fixed. For example, if the target transmission power value is 23db, then the actual transmission power of the V2X antenna is adjusted to 23db every time, and then transmitted into free space.

However, in this traditional solution, the target value of the transmission power is fixed, causing the V2X antenna to only transmit the V2X signal with one transmission power, which limits the selectivity of the transmission power of the V2X signal.

In some cases, for example, the output power of the V2X signal output by the V2X module is 20db. In other words, the V2X module expects the V2X signal to be transmitted at 20db. When using the traditional solution for power compensation, it will only adjust the actual transmission power of the V2X signal to 23db and transmit it. Obviously, the actual transmission power of the V2X signal is inconsistent with the expected transmission power of the V2X module.

In order to solve this problem, embodiments of the present application provide a power compensation method. In this method, the V2X antenna sends a downlink communication signal to the V2X module, and the V2X module feeds back the uplink communication signal to the V2X antenna in response to the downlink communication signal, thereby The output power of the V2X signal is given to the V2X antenna. The output power of the V2X signal is the expected transmission power of the V2X module. Then the V2X antenna performs power compensation based on the output power of the V2X signal, thereby achieving the actual transmission power of the V2X signal. The desired transmit power of V2X modules is consistent. This application is based on this uplink and downlink communication process, so that the V2X antenna always adjusts the actual transmission power of the V2X signal using the output power of the V2X signal as the target value, thereby improving the power compensation accuracy.

The V2X system provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

As shown in Figures 1 and 2, Figure 1 shows a schematic diagram of a V2X system, and Figure 2 shows a schematic structural diagram of a V2X system. The V2X system includes a V2X antenna and a V2X module. There are multiple V2X antennas and can be installed at different locations on the vehicle. The V2X module is installed inside the vehicle and integrated with the on-board equipment. The V2X module and V2X antenna are connected through coaxial cables.

As shown in Figure 2, the V2X module includes the UART_DL pin, UART_UL pin, TxRx_SW pin and ANT_CV2X_TRx pin. The UART_DL pin is used to receive downlink communication signals (hereinafter referred to as UART_DL), and the UART_UL pin is used for output. The uplink communication signal (UART_UL is used below), the TxRx_SW pin is used to output the transceiver status control signal (TxRx_SW is used below), and the ANT_CV2X_TRx pin is used to output or receive V2X signals.

In the embodiment of the present application, the uplink communication signal UART_UL, the downlink communication signal UART_DL, the transceiver status control signal TxRx_SW, and the V2X signal are all coupled on a coaxial cable for transmission. This method can avoid using multiple redundant cables, greatly saving costs and making installation easier. Moreover, the transmission time delay of these signals in the coaxial cable can reach the microsecond level, with low latency.

The structure of the V2X module will be described below with reference to Figure 2. As shown in Figure 2, the crystal generates a frequency 1 carrier that carries frequency 1 to modulate UART_UL onto the coaxial cable. For example, the modulation process: the UART_UL pin is connected to the AND gate, the crystal is connected to the AND gate, UART_UL and frequency 1 pass through the AND gate, and then are input to the filter circuit. After filtering, the filter circuit is coupled to the coaxial cable, and the coaxial cable is transmitted to the V2X antenna.

Similarly, the crystal generates a frequency 2 carrier, which modulates TxRx_SW onto the coaxial cable with frequency 2. For example, the modulation process: the TxRx_SW pin is connected to the AND gate, the crystal is connected to the AND gate, TxRx_SW and frequency 2 pass through the AND gate, and then input to the filter circuit, which is coupled to the coaxial cable after filtering, and is transmitted to the V2X antenna by the coaxial cable.

In the embodiment of this application, a comparator, a filter circuit, and a detection circuit are also connected between the UART_DL pin and the coaxial cable. The coaxial cable transmits the UART_DL from the V2X antenna to the V2X module, and the UART_DL passes through the detection circuit and filtering circuit. The circuit and comparator demodulate and restore the information carried in the UART_DL sent by the V2X antenna.

The structure of the V2X antenna is described below with reference to Figure 2. As shown in Figure 2, the V2X antenna includes an MCU, antenna and compensation circuit. Among them, the V2X module transmits the uplink communication signal, transceiver status control signal and V2X signal to the V2X antenna through the coaxial cable, and then divides the uplink communication signal, transceiver status control signal and V2X signal through the multiplexer. Among them, the V2X signal enters the compensation circuit and is emitted by the antenna connected to the compensation circuit. Uplink communication signals and transceiver status control signals enter the MCU.

Among them, the MCU includes UART_DL pin, UART_UL pin, TxRx_SW pin, Temp_Det pin, Power_Det pin and GPIOs pin. Among them, the UART_DL pin is used to output downlink communication signals (hereinafter referred to as UART_DL), the UART_UL pin is used to receive uplink communication signals, the TxRx_SW pin is used to receive transceiver status control signals, the Temp_Det pin is used to measure temperature, and the Power_Det pin It is used to measure the actual transmit power. The GPIOs pin is connected to the compensation circuit and is used to control the on and off of the compensation circuit and power adjustment.

In the embodiment of this application, the crystal generates a frequency 3 carrier wave, and carries frequency 3 to modulate UART_DL onto the coaxial cable. For example, the modulation process: the UART_DL pin is connected to the AND gate, the crystal is connected to the AND gate, UART_DL and frequency 3 pass through the AND gate, and then are input to the filter circuit. After filtering, the filter circuit is coupled to the coaxial cable, and the coaxial cable is transmitted to the V2X module.

In the embodiment of this application, a detection circuit, a filter circuit and a comparator are also connected between the UART_UL pin and the coaxial cable. The uplink communication signal is demodulated through the detection circuit, filter circuit and comparator to restore the uplink communication sent by the V2X module. The information carried in the signal.

A detector circuit, a filter circuit and a comparator are also connected between the TxRx_SW pin and the coaxial cable. The transceiver status control signal is demodulated through the detector circuit, filter circuit and comparator to restore the transceiver status control signal carried by the V2X module. information.

Among them, the transceiver status control signal is also transmitted to the compensation circuit, which is used to control the reception path to be turned on when receiving V2X signals, and to control the transmitting path to be turned on when transmitting V2X signals. The GPIOs pins of the MCU control the power compensation circuit based on the received transceiver status control signal to perform power compensation on the received V2X signal when receiving the V2X signal, and perform power compensation on the V2X signal that needs to be transmitted when transmitting the V2X signal.

In one implementation, the Temp_Det pin is connected to the thermistor and is used to collect the temperature value monitored by the thermistor.

In one implementation, the Power_Det pin is connected to the input end of the antenna and is used to detect the output power value of the antenna.

In one implementation, the compensation circuit includes an electronic attenuator, a receiving circuit and a transmitting circuit, wherein the receiving circuit includes a low noise amplifier (LNA), the transmitting circuit includes a power amplifier (PA), and the receiving circuit's low noise amplifier (LNA) One end of the power amplifier (PA) of the transmitting circuit is connected to the SPDT switch K1, and the other end is connected to the SPDT switch K2. One end of the power amplifier (PA) of the transmitting circuit is connected to the SPDT switch K1, and the other end is connected to the SPDT switch K2. Among them, an electronic attenuator is provided between the single-pole double-throw switch K1 and the coaxial cable, and the single-pole double-throw switch K2 is connected to the antenna. The transceiver status control signal is transmitted to the single-pole double-throw switch K1 and the single-pole double-throw switch K2. GPIOs pins connect to electronic attenuators, receive circuits, and transmit circuits.

The power compensation method provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

As shown in Figure 3, Figure 3 shows a schematic diagram of a power compensation method, which is applied to the V2X antenna in the V2X system provided by the above embodiment. The method includes:

Step 301: Send a downlink communication signal to the V2X module.

The downlink communication signal carries antenna status information, and the antenna status information includes at least one of temperature information, transmitted data packet count, and status/fault information.

In some implementations, the V2X antenna periodically sends downlink communication signals to the V2X module.

In other implementations, the V2X module can send instructions to the V2X antenna. After receiving the instructions, the V2X antenna sends downlink communication signals to the V2X module.

In the embodiment of the present application, the V2X antenna can modulate the downlink communication signal based on the frequency 3 carrier to couple the downlink communication signal into the coaxial cable.

In some implementations, when the vehicle starts and the V2X system is powered on and starts working, the V2X antenna sends downlink communication signals to the V2X module.

Step 302: Receive the uplink communication signal sent by the V2X module in response to the downlink communication signal.

Among them, the uplink communication signal carries the output power of the V2X signal output by the V2X module.

In one case, after the V2X module receives the downlink communication signal, it can immediately send the uplink communication signal. During this process, the V2X module can ignore various information carried in the downlink communication signal.

In another case, after receiving the downlink communication signal, the V2X module can determine whether the line loss measurement needs to be reinitiated based on the temperature information, transmitted packet count and status/fault information in the downlink communication signal. Among them, the purpose of line loss measurement is to perform power compensation.

For example, if the change value of the temperature information carried in the downlink communication signal exceeds the threshold compared to the temperature information carried in the downlink communication signal received within the preset time period, it means that the ambient temperature of the V2X antenna has changed significantly. When the ambient temperature changes, the line loss of the coaxial cable will also change. Among them, when the ambient temperature changes relatively large, the line loss changes greatly, and when the ambient temperature changes relatively small, the line loss changes relatively small. In this case, the V2X module can determine that the line loss measurement needs to be re-measured.

Or, for example, when the number of transmitted data packets exceeds the threshold, it means that the current line loss has been used for a period of time and the line loss needs to be remeasured. Therefore, the V2X module can determine that the line loss needs to be measured again.

In another case, after the V2X module receives the downlink communication signal, when the V2X module determines that the output power of the output V2X signal has changed based on multiple factors compared with the previous output power, the V2X module can report to the V2X The antenna sends uplink communication signals.

It should be noted that the V2X antenna generally includes a main antenna and a diversity antenna. For convenience of description, the V2X antenna in the embodiment of this application refers to the main antenna by default. When the main antenna fails, it can be switched and the diversity antenna can be used as the main antenna. The specific implementation process includes: the downlink communication signal carries status/fault information. When the status/fault information indicates that the V2X antenna (main antenna) is faulty or in poor health, the V2X module can switch to the backup V2X antenna (diversity antenna). ), transmit and receive V2X signals through the backup V2X antenna (diversity antenna). The power compensation process of the backup V2X antenna (diversity antenna) is the same as the power compensation process of the V2X antenna (main antenna) provided in the embodiment of the present application, and will not be described again here.

Step 303: Perform power compensation according to the output power.

In the embodiment of this application, the V2X antenna can demodulate the uplink communication signal to obtain the output power of the V2X signal output by the V2X module. In this way, the V2X antenna can use the output power as the expected transmission power to adjust the actual transmission power of the V2X signal. , thereby making the actual transmission power of the V2X signal consistent with the expected transmission power of the V2X module, improving the accuracy of power compensation.

In the embodiment of this application, the antenna is used as a transceiver antenna at the same time. In one case, the antenna transmits a V2X signal, in which the V2X module outputs a V2X signal. The V2X signal is transmitted to the V2X antenna via a coaxial cable and enters the electronic attenuator for attenuation. Then the transmit circuit is turned on through the single-pole double-throw switch K1, and the power is amplified by the power amplifier (PA) in the transmit circuit. Then it is output to the antenna through the single-pole double-throw switch K2, and is sent to free space by the antenna. During this process, the V2X antenna can adjust the electronic attenuator and power amplifier (PA) based on the output power, so that the power of the V2X signal output to the antenna is consistent with the output power.

In another case, the antenna receives the V2X signal, turns on the receiving circuit through the single-pole double-throw switch K2, amplifies the power of the received V2X signal through the low-noise amplifier (LNA) in the receiving circuit, and then passes the single-pole double-throw switch K1 conducts the receiving circuit, attenuates the received V2X signal through the electronic attenuator, outputs it to the coaxial cable, and transmits it to the V2X module via the coaxial cable. In this process, the V2X antenna can determine the true line loss based on the output power, and then adjust the electronic attenuator and low noise amplifier (LNA) to compensate for the received V2X signal based on the true line loss. In this way, the V2X signal passes through the coaxial cable from When the V2X antenna transmits to the V2X module, due to compensation, the power of the V2X signal received by the V2X module will not be affected by line loss.

In the embodiment of the present application, through the interaction of uplink communication signals and downlink communication signals between the V2X antenna and the V2X module, the V2X antenna can perform power compensation based on the output power of the V2X signal expected by the V2X module. It can compensate for the signal loss caused by long transmission lines, so that the transmit power and receiving sensitivity of the vehicle's external antenna remain the same as the V2X module, ensuring the reliability of in-vehicle communications.

Based on the above embodiments, as shown in FIG. 4 , FIG. 4 shows a flow chart of a method for power compensation according to the output power. The method includes steps 401 to 403 .

Step 401: Obtain the actual transmission power of the V2X signal transmitted by the V2X antenna.

Step 402: Determine the power compensation value based on the difference between the actual transmit power and the output power.

Step 403: Perform power compensation according to the power compensation value.

In the embodiment of this application, the V2X antenna can detect the actual transmission power of the V2X signal through the Power_Det pin. Then calculate the difference between the output power and the actual transmit power. For example, by subtracting the actual transmit power from the output power, you can get the line loss value under the current temperature environment. This line loss value is the power compensation value.

In the embodiment of this application, the process of power compensation based on the power compensation value can be understood as increasing the power of the V2X signal by adjusting the electronic attenuator and the power amplifier (PA) or low noise amplifier (LNA), where the increased The value can be understood as the power compensation value.

It should be noted that when the ambient temperature changes, the gain of the power amplifier (PA) or low-noise amplifier (LNA) will also change. For example, when the ambient temperature is in the first temperature range, the gain of the power amplifier (PA) is 20db, and when the ambient temperature is in the second temperature range, the gain of the power amplifier (PA) is 22db.

Therefore, based on the above embodiments, in this embodiment of the present application, please refer to FIG. 5 , which shows a flow chart of a method for power compensation according to the output power. The method includes steps 501 to 503 .

Step 501: Obtain the ambient temperature value.

Step 502: Determine the gain of the power amplifier (PA) or the gain of the low-noise amplifier (LNA) according to the ambient temperature value.

Step 503: Perform power compensation based on the output power and the gain of the low-noise amplifier (LNA), or perform power compensation based on the output power and the gain of the power amplifier (PA).

In the embodiment of this application, when the V2X antenna performs power compensation based on the power compensation value, it is also necessary to obtain the ambient temperature value collected by the Temp_Det pin. Among them, different ambient temperature values may correspond to different gains of power amplifiers (PA) or low-noise amplifiers (LNA). At the same time, the V2X antenna can also detect the actual transmission power of the V2X signal through the Power_Det pin.

In the embodiment of this application, when transmitting a V2X signal, the power compensation value can be determined according to the output power and the actual transmission power, and the electronic attenuator can be determined according to the gain of the power amplifier (PA) corresponding to the power compensation value and the current ambient temperature value. The adjustment amount, based on which the electronic attenuator is adjusted to achieve power compensation for the V2X signal.

Based on a similar principle, when receiving a V2X signal, the adjustment amount of the electronic attenuator can be determined based on the power compensation value and the gain of the low-noise amplifier (LNA) corresponding to the current ambient temperature value. Based on this, the electronic attenuator is adjusted to achieve Compensation for V2X signals.

In the embodiment of this application, through temperature detection and power detection, the two-way communication feedback system can adapt to temperature changes to determine the compensation value and adjust the power, realizing real-time adjustment of the transmit power of the V2X antenna and ensuring the accuracy of the V2X system.

Based on the above embodiments, as shown in Figure 6, Figure 6 shows a schematic diagram of a power compensation method, which is applied to the V2X module of the V2X system. The V2X system also includes a V2X antenna. The method includes steps 601 to step 602.

Step 601: Receive downlink communication signals sent by the V2X antenna.

The downlink communication signal carries antenna status information, and the antenna status information includes at least one of temperature information, transmitted data packet count, and status/fault information.

Step 602: Send an uplink communication signal to the V2X antenna in response to the downlink communication signal.

Among them, the uplink communication signal carries the output power of the V2X signal output by the V2X module, and the output power is used for power compensation of the V2X antenna.

Based on the above embodiments, in the embodiment of the present application, the V2X module sends a transceiver status control signal to the V2X antenna. The transceiver status control signal can control the V2X system to send V2X signals during the high level period and during the low level period. Receive V2X signals.

Among them, after the V2X antenna receives the transceiver status control signal, it can directly control the compensation circuit to perform power compensation on the transceiver V2X signal based on the transceiver status control signal. This ensures synchronization of transmission and reception on both sides of the V2X module and V2X antenna, with low latency. Ensure the stability of the V2X system. At the same time, the transmission status control signal is also given to the MCU, which interrupts edge detection and synchronizes to the GPIOs pins to control the power compensation value of the compensation circuit during transmission and reception.

It should be noted that in the embodiment of the present application, the uplink communication signal and the transceiver status control signal are independently separated, so that the power values of the uplink communication signal transmission can be sequenced corresponding to the actual power of each frame when the V2X module transmits the V2X signal.

In the embodiment of this application, the V2X module communicates with the V2X antenna in two directions, and sends the output power of the V2X signal to the V2X antenna for power compensation by the V2X antenna, thereby eliminating the line loss generated when the V2X signal is transmitted through the coaxial cable. Improve the accuracy of V2X systems.

Based on the above embodiments, embodiments of the present application also provide a V2X system. The V2X system includes a V2X antenna and a V2X module. The V2X antenna and the V2X module are connected through a coaxial cable. Please refer to Figure 7, which shows an interaction diagram of a V2X system.

Step 701: The V2X antenna sends downlink communication signals to the V2X module.

The downlink communication signal carries antenna status information, and the antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information;

Step 702: The V2X module receives the downlink communication signal sent by the V2X antenna, and responds to the downlink communication signal by sending an uplink communication signal to the V2X antenna.

The uplink communication signal carries the output power of the V2X signal output by the V2X module;

Step 703: The V2X antenna receives the uplink communication signal and performs power compensation according to the output power.

For the V2X system provided in the embodiments of this application, reference may be made to the content disclosed in each embodiment, and details will not be described here.

On the basis of the above embodiments, embodiments of the present application also provide a vehicle in which the V2X system as described in the above embodiments is installed, in which the V2X antennas are installed at multiple different positions of the vehicle, and the V2X module Integrated with vehicle-mounted equipment, the V2X antenna and V2X module are connected through coaxial cables.

The process of the V2X system implementing the power compensation method provided by the embodiments of this application can refer to the disclosed content of the above implementations, and will not be described again here.

As shown in Figure 8, Figure 8 shows a block diagram of a V2X module. The V2X module 800 shown in Figure 8 may include: a memory 810, a processor 820 and an input/output interface 830. Among them, the memory 810, the processor 820, and the input/output interface 830 are connected through internal connection paths. The memory 810 is used to store instructions, and the processor 820 is used to execute the instructions stored in the memory 810 to control the input/output interface 830 to receive Input data and information, output operation results and other data.

It should be understood that in this embodiment of the present application, the processor 820 may adopt a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits. The circuit is used to execute relevant programs to implement the technical solutions provided by the embodiments of this application.

The memory 810 may include read-only memory and random access memory and provides instructions and data to the processor 820 . A portion of processor 820 may also include non-volatile random access memory. For example, processor 820 may also store device type information.

During the implementation process, each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 820 . The power compensation method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory 810. The processor 820 reads the information in the memory 810 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits ( application specific integrated circuit (ASIC), ready-made field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

On the basis of the above embodiments, embodiments of the present application also provide a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, all contents regarding the power compensation method in the above embodiments are implemented. This will not be described in detail.

Each of the solutions described above can be implemented individually or in combination with each other, which is not specifically limited in the embodiments of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (10)

1. A power compensation method, characterized in that it is applied to a V2X antenna of a V2X system, the V2X system further includes a V2X module, and the method includes: Send a downlink communication signal to the V2X module, the downlink communication signal carries antenna status information, and the antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information; Receive an uplink communication signal sent by the V2X module in response to the downlink communication signal, where the uplink communication signal carries the output power of the V2X signal output by the V2X module; Power compensation is performed based on the output power. 2. The method according to claim 1, characterized in that, performing power compensation according to the output power includes: Obtain the actual transmission power of the V2X signal transmitted by the V2X antenna; Determine a power compensation value based on the difference between the actual transmit power and the output power; Power compensation is performed according to the power compensation value. 3. The method according to claim 1, wherein sending a downlink communication signal to the V2X module includes: Receive instructions from the V2X module, and send downlink communication signals to the V2X module based on the instructions. 4. The method according to claim 1, wherein sending a downlink communication signal to the V2X module includes: Periodically send downlink communication signals to the V2X module. 5. The method according to claim 1, wherein the V2X antenna includes a receiving circuit and a transmitting circuit, the receiving circuit includes a low noise amplifier (LNA), and the transmitting circuit includes a power amplifier (PA), so Power compensation based on the output power includes: Get the ambient temperature value; Determine the gain of the low noise amplifier (LNA) and the gain of the power amplifier (PA) according to the ambient temperature value; Power compensation is performed based on the output power and the gain of the low noise amplifier (LNA), or power compensation is performed based on the output power and the gain of the power amplifier (PA). 6. A power compensation method, characterized in that it is applied to a V2X module of a V2X system, the V2X system further includes a V2X antenna, and the method includes: Receive downlink communication signals sent by the V2X antenna; the downlink communication signals carry antenna status information, and the antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information; In response to the downlink communication signal, an uplink communication signal is sent to the V2X antenna. The uplink communication signal carries the output power of the V2X signal output by the V2X module, and the output power is used to power the V2X antenna. compensate. 7. The method according to claim 6, characterized in that the method further comprises: Send a transceiver status control signal to the V2X antenna, where the transceiver status control signal is used for the V2X antenna to receive a V2X signal or send a V2X signal. 8. A V2X system, characterized in that it includes a V2X antenna and a V2X module, and the V2X antenna and the V2X module are connected through a coaxial cable, wherein, The V2X antenna sends a downlink communication signal to the V2X module. The downlink communication signal carries antenna status information. The antenna status information includes at least one of temperature information, transmitted data packet count and status/fault information. ; The V2X module receives the downlink communication signal sent by the V2X antenna, and responds to the downlink communication signal by sending an uplink communication signal to the V2X antenna. The uplink communication signal carries the V2X signal output by the V2X module. the output power; The V2X antenna receives the uplink communication signal and performs power compensation according to the output power. 9. A vehicle, characterized by being equipped with the V2X system according to claim 8. 10. A computer storage medium, characterized in that a computer program is stored thereon, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.