Power compensation circuit, v2x system, and vehicle

Abstract

This application discloses a power compensation circuit, a V2X system, and a vehicle. In the power compensation circuit, a first transceiver module is connected to an RF module and configured to transmit signals with the RF module; a second transceiver module is connected to an antenna and configured to transmit signals with the antenna; a detection module is connected to the first transceiver module and configured to receive a first RF signal transmitted by the first transceiver module, and obtain a detection signal based on the first power of the first RF signal; an adjustment module is connected to the first transceiver module, the second transceiver module, and the detection module respectively, and is configured to determine a compensation mode based on the detection signal, and perform power compensation on the RF signal between the first transceiver module and the second transceiver module according to the compensation mode. This application can simultaneously perform power compensation on the RF signal during transmission, ensuring the stability and reliability of the RF signal transmission.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a power compensation circuit, a V2X system, and a vehicle. Background Technology

[0002] Communication systems consist of radio frequency (RF) modules and antennas. In V2X (Vehicle-to-Everything) communication systems, the relatively long RF cable between the RF module and antenna results in significant signal loss during high-frequency transmission. This signal loss and attenuation negatively impacts the signal quality of the communication system. Therefore, reducing RF signal attenuation and improving the stability and reliability of RF signal transmission are currently key technical challenges that the industry is actively researching. Summary of the Invention

[0003] This application provides a power compensation circuit, a V2X system, and a vehicle, aiming to reduce the signal attenuation of radio frequency signals in a communication system and improve the stability and reliability of radio frequency signal transmission, so as to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a power compensation circuit is provided for power compensation of radio frequency signals between a radio frequency module and an antenna. The circuit includes: a first transceiver module connected to the radio frequency module and configured to transmit signals with the radio frequency module; a second transceiver module connected to the antenna and configured to transmit signals with the antenna; a detection module connected to the first transceiver module and configured to obtain a detection signal based on a first radio frequency signal transmitted by the first transceiver module; and an adjustment module connected to the first transceiver module, the second transceiver module, and the detection module respectively, configured to determine a compensation mode based on the detection signal and perform power compensation of the radio frequency signals between the first transceiver module and the second transceiver module according to the compensation mode.

[0005] In some embodiments, the detection module includes: a power detection unit connected to the first transceiver module and configured to detect a first power of the first radio frequency signal; and a power comparison unit connected to the power detection unit and configured to generate the detection signal based on the first power.

[0006] In some embodiments, the first transceiver module includes: a first multiplexing unit connected to the radio frequency module and configured to receive the original signal transmitted by the radio frequency module; and a first coupling unit connected to the first multiplexing unit and configured to obtain the first radio frequency signal based on the original signal.

[0007] In some embodiments, the detection module further includes: a power management unit connected to the first multiplexing unit and configured to obtain a reference power based on the original signal; a first input terminal of a power comparison unit connected to the power detection unit, a second input terminal of the power comparison unit connected to the power management unit, and the power comparison unit configured to obtain the detection signal based on the first power and the reference power of the power management unit.

[0008] In some embodiments, the adjustment module includes a first switching unit, a compensation unit, and a second switching unit sequentially disposed between the first transceiver module and the second transceiver module, and a control unit connected to the compensation unit and the second transceiver module; wherein, the first switching unit is configured to determine a first on / off state between the first transceiver module and the compensation unit; the second switching unit is configured to determine a second on / off state between the compensation unit and the second transceiver module; the compensation unit is configured to determine the compensation mode based on the first on / off state and the second on / off state; and the control unit is configured to perform power compensation on the radio frequency signal between the first transceiver module and the second transceiver module based on the second power of the second radio frequency signal transmitted by the second transceiver module.

[0009] In some embodiments, the compensation unit includes a first compensation branch and a second compensation branch connected in parallel. The first compensation branch is configured to perform power compensation on the radio frequency signal transmitted from the radio frequency module to the antenna, and the second compensation branch is configured to perform power compensation on the radio frequency signal transmitted from the antenna and received by the radio frequency module. A first terminal of the first switching unit is connected to a first transceiver module, and a second terminal of the first switching unit is floatingly connected to either the first terminal of the first compensation branch or the first terminal of the second compensation branch. A first terminal of the second switching unit is floatingly connected to either the second terminal of the first compensation branch or the second terminal of the second compensation branch, and a second terminal of the second switching unit is connected to the second transceiver module. The control terminals of both the first and second switching units are connected to the detection module.

[0010] In some embodiments, the first compensation branch is provided with a first power adjustment device, and the second compensation branch is provided with a second power adjustment device; the control unit includes: a power detection device connected to the second transceiver module and configured to detect the second power of the second radio frequency signal transmitted by the second transceiver module; and a control chip connected to the first power adjustment device, the second power adjustment device and the power detection device respectively and configured to determine the adjustment power of the first power adjustment device or the second power adjustment device based on the second power.

[0011] In some embodiments, the first compensation branch further includes a first power amplifier disposed between the first power adjustment device and the second switching unit, and the second compensation branch further includes a second power amplifier disposed between the second power adjustment device and the second switching unit.

[0012] According to a second aspect of this application, a V2X system is provided, including a radio frequency module and an antenna, and a power compensation circuit as provided in the first aspect above, the power compensation circuit being connected to the radio frequency module and the antenna respectively, and configured to perform power compensation on the radio frequency signal between the radio frequency module and the antenna.

[0013] According to a third aspect of this application, a vehicle is provided, including a power compensation circuit as provided in the first aspect above, or a V2X system as provided in the second aspect above.

[0014] In summary, the technical solution proposed in this application is used to perform power compensation on the radio frequency signal between the radio frequency module and the antenna. The power compensation circuit of this application includes: a first transceiver module connected to the radio frequency module and configured to transmit signals with the radio frequency module; a second transceiver module connected to the antenna and configured to transmit signals with the antenna; a detection module connected to the first transceiver module and configured to receive a first radio frequency signal transmitted by the first transceiver module, and obtain a detection signal based on the first power of the first radio frequency signal; and an adjustment module connected to the first transceiver module, the second transceiver module, and the detection module respectively, configured to determine a compensation mode based on the detection signal, and perform power compensation on the radio frequency signal between the first transceiver module and the second transceiver module according to the compensation mode.

[0015] This application embodiment determines the compensation mode of the adjustment module by detecting the first radio frequency signal transmitted by the radio frequency module. Then, based on the determined compensation mode, power compensation can be performed on the radio frequency signal between the radio frequency module and the antenna simultaneously with signal transmission, thereby reducing signal attenuation of the radio frequency signal in the communication system and improving the transmission quality of the radio frequency signal. This application embodiment can simultaneously perform power compensation on the radio frequency signal during transmission, ensuring the stability and reliability of the radio frequency signal transmission. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a power compensation circuit provided in some embodiments of this application; Figure 2 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application; Figure 3 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application; Figure 4 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application; Figure 5 This is a circuit diagram of a power compensation circuit provided in some embodiments of this application.

[0018] Explanation of icon numbers: 100, Radio frequency module; 200, Antenna; 300, First transceiver module; 310, First multiplexing unit; 320, First coupling unit; 400, Second transceiver module; 500, Detection module; 510, Power detection unit; 520, Power comparison unit; 530, Power management unit; 600, Adjustment module; 610, First switching unit; 620, Compensation unit; 630, Second switching unit; 640, Control unit. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the following description, specific embodiments of the invention will be illustrated with reference to steps and symbols performed by one or more computers, unless otherwise stated. Therefore, these steps and operations will be referred to several times as being performed by a computer, and computer execution as referred to herein includes operations by a computer processing unit representing electronic signals of data in a structured format. This operation transforms the data or maintains it at a location in the computer's memory system, which can be reconfigured or otherwise alter the operation of the computer in a manner well known to those skilled in the art. The data structure maintained by the data is the physical location of the memory, which has specific characteristics defined by the data format. However, the principles of the invention described above are not intended to be limiting, and those skilled in the art will understand that many of the steps and operations described below can also be implemented in hardware.

[0021] The terms "module" or "unit" as used herein can be considered as software objects executing on the computing system. The various components, modules, engines, and services described herein can be considered as implementations on the computing system. While the apparatus and methods described herein are preferably implemented in software, they can also be implemented in hardware, both of which are within the scope of this invention.

[0022] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is “connected” or “coupled” to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein may include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0023] Vehicle-to-Everything (V2X) is a communication system in vehicle-to-everything (V2X) technology, designed to enable vehicles to connect and communicate with their surroundings via wireless communication. V2X systems allow vehicles to exchange information with other vehicles (V2V), roadside infrastructure (V2I), pedestrians (V2P), networks (V2N), and other devices, thereby improving road safety, traffic efficiency, and the driving experience.

[0024] In V2X (Vehicle to Everything) systems, there is usually a seven- to nine-meter-long RF cable between the RF module and the antenna. The high-frequency signal loss through the cable can reach up to 11dB of insertion loss, and the signal attenuation has a serious impact on the signal quality of the communication system.

[0025] In view of this, embodiments of this application provide a power compensation circuit, a V2X system, and a vehicle, which aim to reduce the signal attenuation of radio frequency signals in the communication system and improve the stability and reliability of radio frequency signal transmission.

[0026] In a first aspect, embodiments of this application provide a power compensation circuit.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of a power compensation circuit provided in some embodiments of this application. The power compensation circuit in this application embodiment is used to compensate the power of the radio frequency signal between the radio frequency module 100 and the antenna 200, such as... Figure 1 As shown, the power compensation circuit includes a first transceiver module 300, a second transceiver module 400, a detection module 500, and an adjustment module 600. The first transceiver module 300 is connected to the radio frequency module 100 and configured to transmit signals with the radio frequency module 100. The second transceiver module 400 is connected to the antenna 200 and configured to transmit signals with the antenna 200. The detection module 500 is connected to the first transceiver module 300 and configured to obtain a detection signal based on a first radio frequency signal transmitted by the first transceiver module 300. The adjustment module 600 is connected to the first transceiver module 300, the second transceiver module 400, and the detection module 500, respectively, and configured to determine a compensation mode based on the detection signal, and perform power compensation on the radio frequency signal between the first transceiver module 300 and the second transceiver module 400 according to the compensation mode.

[0028] The radio frequency (RF) module 100 and antenna 200 are devices used for signal transmission in a communication system. The RF module 100 converts the signals from the baseband processor into RF signals and transmits them to the antenna 200 via an RF cable, which then transmits them outwards. In this embodiment, a power compensation circuit is provided between the RF module 100 and the antenna 200 to compensate for the losses caused by transmitting high-frequency signals between the RF module 100 and the antenna 200, thereby reducing signal attenuation during transmission and improving signal quality.

[0029] The first transceiver module 300 is connected to the radio frequency module 100 for signal transmission with the radio frequency module 100. The second transceiver module 400 is connected to the antenna 200 for signal transmission with the antenna. Exemplarily, the first transceiver module 300 and the second transceiver module 400 may be signal couplers to extract radio frequency signals from the radio frequency module 100 or the antenna 200.

[0030] The detection module 500 is connected to the first transceiver module 300 and detects the first radio frequency (RF) signal extracted by the first transceiver module 300 from the RF module 100 to obtain a detection signal. The adjustment module 600 determines the compensation mode of the RF signal based on the detection signal generated by the detection module 500. The compensation mode can correspond to the working state of the RF module 100. For example, when the RF module 100 is in the transmitting state, the compensation mode corresponding to the adjustment module 600 compensates for the RF signal transmitted by the RF module 100 to the antenna 200; when the RF module 100 is in the receiving state, the compensation mode corresponding to the adjustment module 600 compensates for the RF signal received by the RF module 100 from the antenna 200. This embodiment of the application determines the compensation mode based on the first RF signal, which can simultaneously perform power compensation on the RF signal during transmission, ensuring the stability and reliability of the RF signal transmission.

[0031] In some embodiments, please refer to Figure 2 , Figure 2 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application. For example... Figure 2 As shown, the detection module 500 includes a power detection unit 510 and a power comparison unit 520. The power detection unit 510 is connected to the first transceiver module 300 and is configured to determine a first power of the first radio frequency signal. The power comparison unit 520 is connected to the power detection unit 510 and is configured to generate a detection signal based on the first power.

[0032] The detection module 500 detects the power of the first radio frequency signal through the power detection unit 510, so as to determine the working state of the radio frequency module 100 based on the first power of the first radio frequency signal, and then generates a detection signal corresponding to the working state.

[0033] In some implementations, the power detection unit 510 can be a detector diode. The detector diode rectifies the radio frequency signal received by the first transceiver module 300 based on the unidirectional transmission characteristic of a diode, and then transmits the rectified signal through an integrator to obtain the DC component. It can be understood that when the radio frequency module 100 is in transmit mode, the first power detected by the power detection unit 510 is greater than the power threshold; when the radio frequency module 100 is in receive mode, since the power detection unit 510 cannot detect the radio frequency signal transmitted by the radio frequency module 100, the detected first power is almost zero.

[0034] The power comparison unit 520 is connected to the power detection unit 510. Based on the first power detected by the power detection unit 510, a detection signal is generated so that the adjustment module 600 can determine the compensation mode under the current operating condition.

[0035] In some implementations, the power comparison unit 520 can be a comparator. The comparator generates a detection signal based on the first power detected by the power detection unit 510. For example, the comparator receives the first power and a reference power, and determines the first power based on the reference power to obtain the detection signal. For example, if the first power is greater than the reference power, the comparator outputs a high-level detection signal, indicating that the RF module 100 is in a transmitting state; if the first power is less than the reference power, the comparator outputs a low-level detection signal, indicating that the RF module 100 is in a receiving state. The adjustment module 600 determines the operating state of the RF module 100 based on the detection signal sent by the detection module 500, and then determines the compensation mode corresponding to the operating state of the RF module 100.

[0036] In some embodiments, please refer to Figure 3 , Figure 3 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application. For example... Figure 3 As shown, the first transceiver module 300 includes a first multiplexing unit 310 and a first coupling unit 320. The first multiplexing unit 310 is connected to the radio frequency module 100 and is configured to receive the original signal transmitted by the radio frequency module. The first coupling unit 320 is connected to the first multiplexing unit 310 and is configured to obtain a first radio frequency signal based on the original signal.

[0037] The first transceiver module 300 is connected to the radio frequency module 100 to extract and process the radio frequency signals transmitted by the radio frequency module 100. It should be noted that the original signal transmitted by the radio frequency module 100 can be a multiplexed signal, that is, it includes both radio frequency signals and power signals. Therefore, the first transceiver module 300 first receives the multiple original signals transmitted by the radio frequency module 100 through the first multiplexing unit 310, and then extracts the first radio frequency signal from the original signal through the first coupling unit 320, so that the detection module 500 can generate a detection signal based on the extracted first radio frequency signal. Simultaneously, the adjustment module 600 is also connected to the first coupling unit 320 to perform power compensation on the radio frequency signal transmitted by the first coupling unit 320.

[0038] In some embodiments, please continue reading Figure 3 The detection module 500 also includes a power management unit 530, which is connected to the first multiplexing unit 310 and configured to obtain a reference power based on the original signal. A first input terminal of a power comparison unit 520 is connected to the power detection unit 510, and a second input terminal of the power comparison unit 520 is connected to the power management unit 530. The power comparison unit 520 is configured to obtain a detection signal based on the first power detected by the power detection unit 510 and the reference power transmitted by the power management unit 530.

[0039] The power management unit 530 is connected to the first multiplexing unit 310. It obtains a reference power from the original signal received by the first multiplexing unit 310 and transmits this reference power to the power comparison unit 520, so that the power comparison unit 520 can obtain a detection signal based on the detected first power and the reference power. Exemplarily, the two input terminals of the power comparison unit 520 receive the first power and the reference power, respectively. When the first power is greater than the reference power, the power comparison unit 520 outputs a high-level detection signal to the adjustment module 600; when the first power is less than the reference power, the power comparison unit 520 outputs a low-level detection signal to the adjustment module 600.

[0040] In some embodiments, the power management unit 530 is further configured to obtain a power supply based on the original signal, so as to power the power comparison unit 520 based on the power supply.

[0041] In some implementations, the power management unit 530 includes a low dropout regulator (LDO). An LDO can maintain a stable voltage output even when the input and output voltage difference is small; it has a simple structure and fast response.

[0042] In some embodiments, please refer to Figure 4 , Figure 4 This is a schematic diagram of another power compensation circuit provided in some embodiments of this application. For example... Figure 4 As shown, the adjustment module 600 includes a first switching unit 610, a compensation unit 620, and a second switching unit sequentially disposed between the first transceiver module 300 and the second transceiver module 400, and a control unit 640 connected to the compensation unit 620 and the second transceiver module 400. The first switching unit 610 is configured to determine a first on / off state between the first transceiver module and the compensation unit 620. The second switching unit 630 is configured to determine a second on / off state between the compensation unit 620 and the second transceiver module 400. The compensation unit 620 determines a compensation mode based on the first and second on / off states. The control unit 640 is configured to perform power compensation on the radio frequency signal between the first transceiver module 300 and the second transceiver module 400 based on the second power of the second radio frequency signal transmitted by the second transceiver module 400.

[0043] When the RF module 100 is connected to the first transceiver module 300 and the antenna 200 is connected to the second transceiver module 400, power compensation is performed on the RF signal between the RF module 100 and the antenna 200, which means power compensation is performed on the RF signal between the first transceiver module 300 and the second transceiver module 400.

[0044] Please continue reading. Figure 4 The first transceiver module 300 and the second transceiver module 400 include a first switch unit 610, a compensation unit 620 and a second switch unit 630 connected in sequence. The first switch unit 610 connects the compensation unit 620 to the first transceiver module 300, and the second switch unit 630 connects the compensation unit 620 to the second transceiver module 400.

[0045] The adjustment module 600 also includes a control unit 640. The control unit 640 determines the power difference that the compensation unit 620 needs to compensate based on the second power of the second radio frequency signal transmitted by the second transceiver module 400, and then performs power compensation on the radio frequency signal in the compensation unit 620. For example, if the power of the radio frequency signal transmitted by the radio frequency module 100 is approximately 23dB, the control unit 640 can acquire the second power of the second radio frequency signal in the second transceiver module 400, calculate the power difference between the second power and 23dB, and then perform power compensation based on the power difference.

[0046] In some embodiments, the compensation unit 620 includes a first compensation branch and a second compensation branch connected in parallel. The first compensation branch is configured to perform power compensation on the radio frequency signal transmitted from the radio frequency module 100 to the antenna 200, and the second compensation branch is configured to perform power compensation on the radio frequency signal received by the radio frequency module 100 from the radio frequency signal transmitted from the antenna 200. A first terminal of the first switching unit 610 is connected to the first transceiver module 300, and a second terminal of the first switching unit 610 is floatingly connected to the first terminal of the first compensation branch or the first terminal of the second compensation branch. A first terminal of the second switching unit 630 is floatingly connected to the second terminal of the first compensation branch or the second terminal of the second compensation branch, and a second terminal of the second switching unit 630 is connected to the second transceiver module 400. The control terminals of both the first switching unit 610 and the second switching unit 630 are connected to the detection module 500.

[0047] Please continue reading. Figure 4 The compensation unit 620 includes two compensation branches, which are used to compensate the power of the uplink and downlink radio frequency signals, respectively. The floating connection of the switching unit means that the switching unit can be connected to either the first compensation branch or the second compensation branch, and the specific on / off state can be controlled by a detection signal.

[0048] The first on / off state indicates the connection state between the first switching unit 610 and the compensation branch in the compensation unit 620, and the second on / off state indicates the connection state between the second switching unit 630 and the compensation branch in the compensation unit 620. The first and second on / off states are related to the compensation mode; for example, when performing power compensation on the RF signal transmitted by the RF module 100, both the first switching unit 610 and the second switching unit 630 are connected to the first compensation branch and disconnected from the second compensation branch; when performing power compensation on the RF signal received by the RF module 100, both the first switching unit 610 and the second switching unit 630 are connected to the second compensation branch and disconnected from the first compensation branch. The control terminals of the first switching unit 610 and the second switching unit 630 are connected to the detection module 500, and the first and second on / off states can be determined based on the detection signal from the detection module 500 to correspond to the compensation mode. In some implementations, the first switching unit 610 and the second switching unit 630 can be switches, relays, etc.

[0049] In some embodiments, the first compensation branch is provided with a first power adjustment device, and the second compensation branch is provided with a second power adjustment device. The control unit 640 includes a power detection device and a control chip. The power detection device is connected to the second transceiver module 400 and configured to detect the second power of the second radio frequency signal transmitted by the second transceiver module. The control chip is connected to the first power adjustment device, the second power adjustment device, and the power detection device, respectively, and is configured to determine the adjustment power of the first power adjustment device or the second power adjustment device based on the second power.

[0050] The first power adjustment device in the first compensation branch is used to perform power compensation on the radio frequency signal transmitted from the radio frequency module 100 to the antenna 200. The second power adjustment device in the second compensation branch is used to perform power compensation on the radio frequency signal received by the radio frequency module 100 from the antenna 200. In this embodiment, the control unit 640 performs power detection on the radio frequency signal transmitted by the second transceiver module 400 to obtain the power difference of the radio frequency signal. The control unit 640 sends the calculated power difference to the power adjustment device so that the power adjustment device can perform power compensation on the radio frequency signal.

[0051] In some implementations, the first power adjustment device and the second power adjustment device can be electronic attenuators. Electronic attenuators can control the attenuation amount through electrical signals, enabling dynamic adjustment of the signal amplitude without interrupting signal transmission.

[0052] In this embodiment, the control unit 640 is configured to collect the radio frequency signal from the antenna 200, obtain the accurate power loss of the radio frequency signal during transmission, and perform precise power compensation on the radio frequency signal. This ensures that the output power of the radio frequency module 100 is the same as the input power of the antenna 200, improves the reliability and stability of radio frequency signal transmission, reduces the communication error rate, and improves communication quality.

[0053] In some embodiments, the first compensation branch further includes a first power amplifier disposed between the first power adjustment device and the second switching unit 630. The second compensation branch further includes a second power amplifier disposed between the second power adjustment device and the second switching unit 630.

[0054] The first power amplifier and the second power amplifier are configured in different compensation branches to compensate for the power of the RF module 100 under different operating states. For example, when the RF module 100 is in transmit mode, the first compensation branch is activated, and the first power amplifier and the second power adjustment device synchronously compensate for the power of the RF signal transmitted by the RF module 100. When the RF module 100 is in receive mode, the second compensation branch is activated, and the second power amplifier and the second power adjustment device synchronously compensate for the power of the RF signal received by the RF module 100. For example, the first power amplifier can be a transmit power amplifier (PA), and the second power amplifier can be a receive power amplifier, i.e., a low noise amplifier (LNA).

[0055] This application embodiment uses different compensation branches to perform power compensation on the radio frequency signal of the radio frequency module 100 under different operating states. Furthermore, by acquiring the radio frequency signal power at the antenna 200, this application embodiment can obtain a precise power difference value during the transmission of the radio frequency signal. Then, the compensation unit 620 can perform power compensation based on this power difference value, ensuring that the output power of the radio frequency module 100 is the same as the input power of the antenna 200, thereby improving the reliability and stability of radio frequency signal transmission.

[0056] The power compensation circuit of this application embodiment will now be described through a specific example.

[0057] Please see Figure 5 , Figure 5 This is a circuit diagram of a power compensation circuit provided in some embodiments of this application. For example... Figure 5 As shown, the radio frequency module 100 is installed in the vehicle-mounted intelligent terminal (Telematics BOX, abbreviated as T-BOX). The radio frequency module 100 is provided with an antenna interface, one end of the radio frequency cable is connected to the antenna interface, and the other end is connected to the antenna 200. In this embodiment of the application, a power compensation circuit is provided between the radio frequency module 100 and the antenna 200 to perform power compensation on the radio frequency signal between the radio frequency module 100 and the antenna 200.

[0058] like Figure 5As shown, the radio frequency (RF) signal output by the RF module 100 is combined with the power signal from the vehicle-mounted intelligent terminal and input to the second multiplexing unit for transmission. In this embodiment, the power compensation circuit receives the original signal transmitted by the RF module 100 through the first multiplexing unit 310 and extracts the RF signal from the original signal through the first coupling unit 320. The power detection unit 510 detects the first power of the RF signal using a detector diode and combines this with the comparator output of the power comparison unit 520 to obtain a detection signal corresponding to the operating state of the RF module 100. A high-level detection signal indicates that the RF module 100 is in a transmitting state, and a low-level detection signal indicates that the RF module 100 is in a receiving state.

[0059] The detection module 500 also includes a low-dropout linear regulator, which serves as a power management unit 530. The power management unit 530 obtains a reference power based on the original signal transmitted by the RF module 100, enabling the power comparison unit 520 to generate a detection signal based on the first power detected by the power detection unit 510. The power management unit 530 also generates a power supply based on the original signal to power the power comparison unit 520.

[0060] The power comparison unit 520 sends the generated detection signal to the first switching unit 610 and the second switching unit 630 of the adjustment module 600 to determine the compensation branch of the compensation unit 620 based on the detection signal. For example, when the RF module 100 is in a transmitting state, the first compensation branch of the compensation unit 620 is connected to perform power compensation on the RF signal transmitted by the RF module 100 through the first compensation branch; when the RF module 100 is in a receiving state, the second compensation branch of the compensation unit 620 is connected to perform power compensation on the RF signal received by the RF module 100 through the second compensation branch.

[0061] The adjustment module 600 is connected to the control unit 640 via the second transceiver module 400. The control unit 640 uses a power detector (PD) to detect the power of the second radio frequency signal transmitted from the antenna 200 received by the second transceiver module 400, obtaining the second power, and transmits the detected second power to the control chip MCU. The control chip MCU calculates the power difference that needs to be compensated based on the collected power, and then sends this power difference to the power adjustment devices in different adjustment branches. The compensation branches, based on the received power difference, combine with power amplifiers to achieve power compensation of the radio frequency signal.

[0062] In some implementations, the first coupling unit 320 and the second transceiver module 400 can be couplers to extract radio frequency signals in a signal coupling-based manner.

[0063] The power compensation circuit of this application embodiment determines the compensation mode based on the first radio frequency signal transmitted by the radio frequency module 100. It can simultaneously compensate the power of the radio frequency signal during transmission, ensuring the stability and reliability of the radio frequency signal transmission. Based on the power compensation circuit provided in this application embodiment, signal attenuation caused by long-distance transmission between the radio frequency module 100 and the antenna 200 can be avoided, increasing the transmission distance of the radio frequency signal by at least 30%. The power compensation circuit of this application embodiment is applicable to various communication systems and has strong versatility.

[0064] In some embodiments, a V2X system is also provided, including an RF module and an antenna, as well as a power compensation circuit as described in the above embodiments. The power compensation circuit is connected to the RF module and the antenna respectively, and is configured to perform power compensation on the RF signal between the RF module and the antenna.

[0065] It should be understood that for a detailed description of the structure, operation, and beneficial effects of the above-mentioned V2X system, please refer to the embodiment of the power compensation circuit described above, which will not be repeated here.

[0066] In some embodiments, a vehicle is also provided, which includes the power compensation circuit proposed in the above embodiments, or the V2X system proposed in the above embodiments.

[0067] It should be understood that for a detailed description of the structure, operation, and beneficial effects of the above-mentioned vehicle, please refer to the embodiment of the power compensation circuit described above, which will not be repeated here.

[0068] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0069] The above provides a detailed description of a temperature acquisition method, acquisition device, storage medium, and electronic device provided in the embodiments of this application, and uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power compensation circuit, characterized in that, The circuit is used for power compensation of the radio frequency signal between the radio frequency module (100) and the antenna (200), and includes: The first transceiver module (300) is connected to the radio frequency module (100) and is configured to transmit signals with the radio frequency module (100); The second transceiver module (400) is connected to the antenna (200) and is configured to transmit signals with the antenna (200); The detection module (500) is connected to the first transceiver module (300) and is configured to obtain a detection signal based on the first radio frequency signal sent by the first transceiver module (300); The adjustment module (600) is connected to the first transceiver module (300), the second transceiver module (400) and the detection module (500) respectively, and is configured to determine the compensation mode based on the detection signal, and perform power compensation on the radio frequency signal between the first transceiver module (300) and the second transceiver module (400) according to the compensation mode.

2. The circuit according to claim 1, characterized in that, The detection module (500) includes: A power detection unit (510), connected to the first transceiver module (300), is configured to detect the first power of the first radio frequency signal; A power comparison unit (520), connected to the power detection unit (510), is configured to generate the detection signal based on the first power.

3. The circuit according to claim 2, characterized in that, The first transceiver module (300) includes: The first multiplexing unit (310) is connected to the radio frequency module (100) and is configured to receive the original signal transmitted by the radio frequency module (100); The first coupling unit (320), connected to the first multiplexing unit (310), is configured to obtain the first radio frequency signal based on the original signal.

4. The circuit according to claim 3, characterized in that, The detection module (500) further includes: A power management unit (530), connected to the first multiplexing unit (310), is configured to obtain a reference power based on the original signal; The first input terminal of the power comparison unit (520) is connected to the power detection unit (510), and the second input terminal of the power comparison unit (520) is connected to the power management unit (530). The power comparison unit (520) is configured to obtain the detection signal based on the first power and the reference power of the power management unit (530).

5. The circuit according to claim 1, characterized in that, The adjustment module (600) includes a first switching unit (610), a compensation unit (620), and a second switching unit (630) sequentially disposed between the first transceiver module (300) and the second transceiver module (400), and a control unit (640) connected to the compensation unit (620) and the second transceiver module (400); wherein, The first switching unit (610) is configured to determine a first on / off state between the first transceiver module (300) and the compensation unit (620); The second switching unit (630) is configured to determine a second on / off state between the compensation unit (620) and the second transceiver module (400); The compensation unit (620) is configured to determine the compensation mode based on the first on / off state and the second on / off state; The control unit (640) is configured to perform power compensation on the radio frequency signal between the first transceiver module (300) and the second transceiver module (400) based on the second power of the second radio frequency signal transmitted by the second transceiver module (400).

6. The circuit according to claim 5, characterized in that, The compensation unit (620) includes a first compensation branch and a second compensation branch connected in parallel. The first compensation branch is configured to perform power compensation on the radio frequency signal sent by the radio frequency module (100) to the antenna (200), and the second compensation branch is configured to perform power compensation on the radio frequency signal transmitted by the antenna (200) received by the radio frequency module (100). The first end of the first switch unit (610) is connected to the first transceiver module (300), and the second end of the first switch unit (610) is floatingly connected to the first end of the first compensation branch or the first end of the second compensation branch; the first end of the second switch unit (630) is floatingly connected to the second end of the first compensation branch or the second end of the second compensation branch, and the second end of the second switch unit (630) is connected to the second transceiver module (400); the control ends of the first switch unit (610) and the second switch unit (630) are both connected to the detection module (500).

7. The circuit according to claim 6, characterized in that, The first compensation branch is equipped with a first power adjustment device, and the second compensation branch is equipped with a second power adjustment device; the control unit (640) includes: A power detection device, connected to the second transceiver module (400), is configured to detect the second power of the second radio frequency signal transmitted by the second transceiver module (400); The control chip is connected to the first power adjustment device, the second power adjustment device, and the power detection device respectively, and is configured to determine the adjustment power of the first power adjustment device or the second power adjustment device based on the second power.

8. The circuit according to claim 7, characterized in that, The first compensation branch further includes a first power amplifier disposed between the first power adjustment device and the second switching unit (630), and the second compensation branch further includes a second power amplifier disposed between the second power adjustment device and the second switching unit (630).

9. A V2X system, characterized in that, The device includes a radio frequency module and an antenna, as well as a power compensation circuit as described in any one of claims 1 to 8, wherein the power compensation circuit is connected to the radio frequency module and the antenna respectively, and is configured to perform power compensation on the radio frequency signal between the radio frequency module and the antenna.

10. A vehicle, characterized in that, Includes the power compensation circuit as described in any one of claims 1 to 8, or the V2X system as described in claim 9.

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