Communication system and vehicle

Abstract

The utility model relates to a communication system and a vehicle. The communication system comprises an active antenna, the active antenna comprises a first amplification circuit, and the first amplification circuit is used for amplifying a signal received by the active antenna or a signal transmitted by the active antenna; and a processing device connected with the active antenna, the processing device comprising a second amplification circuit for amplifying a signal received from the active antenna or a signal transmitted to the active antenna. According to the communication system and the vehicle, signal attenuation between the antenna and the processing equipment caused by line loss can be compensated, so that the distance between the antenna and the processing equipment is not limited, and the stability of the communication system is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular, to a communication system and a vehicle. Background Art

[0002] Tiantong satellite network is an autonomous and controllable satellite mobile communication system that can provide all-weather, all-day, stable and reliable mobile communication services, supporting voice, short message and data services. When the ground communication network cannot cover or the ground network cannot be used, Tiantong satellite network is an important means of communication, which can provide satellite communication services that are not restricted by ground network coverage.

[0003] For the vehicle-mounted system, a satellite network communication function can also be configured. In order to realize the satellite network communication function, the vehicle needs to be configured with a corresponding satellite network communication system. Utility Model Content

[0004] The purpose of the present disclosure is to provide a communication system and a vehicle, which can compensate for the signal attenuation between the antenna and the processing device caused by line loss, so that the distance between the antenna and the processing device is not limited, thereby improving the stability of the communication system.

[0005] In order to achieve the above-mentioned objectives, in a first aspect, the present disclosure provides a communication system, comprising: an active antenna, the active antenna comprising a first amplifying circuit, the first amplifying circuit being used to amplify a signal received by or transmitted by the active antenna; a processing device connected to the active antenna, the processing device comprising a second amplifying circuit, the second amplifying circuit being used to amplify a signal received from or transmitted to the active antenna.

[0006] Optionally, the active antenna also includes a first DC blocking capacitor and a first RF connector, one end of the first DC blocking capacitor is connected to the first amplifying circuit, and the other end of the first DC blocking capacitor is connected to the first RF connector; and / or the processing device also includes a second DC blocking capacitor and a second RF connector, one end of the second DC blocking capacitor is connected to the second amplifying circuit, and the other end of the second DC blocking capacitor is connected to the second RF connector; wherein the first RF connector and / or the second RF connector are used to connect the active antenna and the processing device.

[0007] Optionally, the active antenna includes a first controller, which is connected to the first amplifying circuit, and the processing device includes a second controller, which is connected to the second amplifying circuit; wherein the second controller is used to generate an active antenna control instruction and transmit it to the first controller, and the first controller is used to generate an amplifier enable control instruction according to the active antenna control instruction and transmit it to the first amplifying circuit.

[0008] Optionally, the active antenna also includes a first signal processor, a third DC blocking capacitor and a first RF connector, the first controller is connected to the first signal processor, and the first signal processor is connected to the first RF connector; the processing device also includes a second signal processor, a fourth DC blocking capacitor and a second RF connector, the second controller is connected to the second signal processor, the second signal processor is connected to the second RF connector, and the second RF connector is connected to the first RF connector.

[0009] Optionally, the first signal processor and / or the second signal processor is an on-off keying modem.

[0010] Optionally, the first RF connector is connected to the second RF connector via a connecting line, and a length of the connecting line is within a preset length range.

[0011] Optionally, the active antenna further includes a power supply, the first controller is connected to the power supply, and the first controller is further configured to generate a power supply control instruction according to the active antenna control instruction and transmit the instruction to the power supply.

[0012] Optionally, the active antenna also includes an analog-to-digital converter, the first controller is connected to the analog-to-digital converter, the first controller is also used to generate an analog-to-digital converter control instruction according to the active antenna control instruction, and transmit it to the analog-to-digital converter, and the analog-to-digital converter is used to sample temperature data according to the analog-to-digital converter control instruction.

[0013] Optionally, at least one of the first amplifying circuit and the second amplifying circuit includes: at least one sub-amplifying circuit, each of the sub-amplifying circuits includes an amplifier and a filter connected to the amplifier, wherein different sub-amplifying circuits include amplifiers of different types.

[0014] Optionally, the active antenna further includes a first RF switch, which is connected to the first amplifying circuit; and / or the processing device further includes a second RF switch and a baseband, which is connected to the second amplifying circuit, and which is connected to the baseband.

[0015] Optionally, the communication system is a vehicle-mounted communication system, and the active antenna and the processing device are arranged at different positions of the vehicle.

[0016] In a second aspect, an embodiment of the present disclosure provides a vehicle, wherein the vehicle comprises the communication system as described in the first aspect.

[0017] Through the above technical solution, an active antenna is used. Since the active antenna has a built-in amplification circuit, the active antenna can amplify the signal, and the processing device connected to the active antenna also has a built-in amplification circuit, so the processing device can also amplify the signal. Furthermore, the active antenna and the processing device can achieve two-stage amplification of the signal, which can compensate for the signal attenuation caused by the line loss between the active antenna and the processing device, so that the distance between the antenna and the processing device is not limited, and the stability of the communication system is improved.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0020] Figure 1 It is a structural block diagram of a communication system according to an exemplary embodiment.

[0021] Figure 2 is a schematic diagram of an amplifier circuit according to an exemplary embodiment.

[0022] Figure 3 is a schematic diagram of an active antenna according to an exemplary embodiment.

[0023] Figure 4 is a schematic diagram of a processing device according to an exemplary embodiment.

[0024] Figure 5 The diagram is a partial circuit structure diagram of a communication system according to an exemplary embodiment.

[0025] Figure 6 It is a schematic diagram of a partial circuit structure of another communication system according to an exemplary embodiment.

[0026] Figure 7 is a schematic diagram of a circuit structure of an S-BOX according to an exemplary embodiment.

[0027] Figure 8 It is a schematic diagram of a functional block diagram of a vehicle according to an exemplary embodiment. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise specified, directional words such as "up, down, left, right, front, back", etc. are used only to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0030] Tiantong satellite network is an autonomous and controllable satellite mobile communication system that can provide all-weather, all-day, stable and reliable mobile communication services, supporting voice, short message and data services. When the ground communication network cannot cover or the ground network cannot be used, Tiantong satellite network is an important means of communication, which can provide satellite communication services that are not restricted by ground network coverage.

[0031] For the vehicle-mounted system, a satellite network communication function can also be configured. In order to realize the satellite network communication function, the vehicle needs to be configured with a corresponding satellite network communication system.

[0032] S-BOX is a terminal device for Tiantong satellite network communication, which can be carried on vehicles. S-BOX realizes the following vehicle-mounted Tiantong satellite communication functions:

[0033] Satellite mobile communication function: S-BOX can realize satellite mobile communication function, and realize functions such as voice calls, text message sending and data transmission through the satellite network.

[0034] Tiantong location: S-BOX obtains location information from the vehicle and uses the Tiantong location service channel to send positioning information.

[0035] Emergency rescue function: When the user encounters an emergency, he can initiate an SOS (emergency call signal). The device will automatically send a distress signal to the rescue center and provide the user's location and vehicle information so that rescue personnel can arrive at the scene in time for rescue.

[0036] Real-time vehicle information monitoring function: S-BOX communicates with the vehicle through the CAN (Controller Area Network) bus to obtain real-time vehicle information, including vehicle speed, engine speed, fuel consumption, battery voltage, etc. When there is no ground network, the background can also monitor and analyze vehicle driving data in real time.

[0037] Remote control function: The vehicle can be remotely controlled through S-BOX in the background.

[0038] It can be seen that S-BOX, as a vehicle-mounted terminal of the Tiantong satellite network, can not only realize satellite mobile communications of the vehicle, but also realize relevant control of the vehicle. It should be understood that as a vehicle-mounted terminal of the Tiantong satellite network, S-BOX can include a host and an antenna, the antenna is an external antenna, and the host can be regarded as a processing device. Therefore, S-BOX can be understood as a communication system configured on the vehicle, which includes a processing device and an external antenna.

[0039] In the related art, vehicles use a passive antenna solution, which has a limiting condition: the layout distance between the host and the antenna cannot exceed 1 meter. The reasons are analyzed as follows:

[0040] Through the analysis of actual installation scenarios, the vehicle-mounted S-BOX device is generally combined with the vehicle center console, and the split host of the S-BOX is installed in the cockpit area inside the car. The S-BOX also includes a set of external passive antennas, which are installed in areas where the signal is not blocked; such as spoilers, sunroofs, front windshields, and other areas that can receive satellite signals. Among them, the external antenna uses a passive antenna, there is no amplifier inside, only the antenna body and the RF connector. The S-BOX split host end integrates the CAN interface and power supply; and the communication module of the split host integrates the satellite baseband, filter, amplifier and RF switch. Since the RF transmitting and receiving amplifiers are only one level inside the communication module, the line length of the split host and the external antenna is limited to less than 1 meter, which has many limitations. If it exceeds 1 meter, the RF signal attenuation is serious, which is easy to cause communication instability and other problems, resulting in the inability to use the satellite communication function. That is, the installation location of the split host and antenna is limited, and it is difficult to find a suitable installation location.

[0041] However, as the intelligence of vehicles increases, there are more and more smart devices on the vehicles, the space for equipment is becoming increasingly tight, and it is becoming increasingly difficult to choose the location of the split host and external antenna, making it impossible to implement the solution.

[0042] Based on this, the embodiment of the present disclosure provides a technical solution, in which an active antenna is used. Since the active antenna has a built-in amplification circuit, the active antenna can amplify the signal, and the processing device connected to the active antenna also has a built-in amplification circuit, so the processing device can also amplify the signal. Furthermore, the active antenna and the processing device can achieve two-stage amplification of the signal, which can compensate for the signal attenuation caused by the line loss between the active antenna and the processing device, so that the distance between the antenna and the processing device is not limited, and the stability of the communication system is improved.

[0043] Figure 1 is a structural block diagram of a communication system 10 according to an exemplary embodiment. Figure 1As shown, the communication system 10 includes: an active antenna 11 and a processing device 12, wherein the active antenna 11 and the processing device 12 are connected.

[0044] In combination with the introduction of the aforementioned application scenarios, the active antenna 11 can be an external active antenna 11 of the S-BOX device, and the processing device 12 can be a split host of the S-BOX device. It should be understood that the communication system 10 can be applied to other devices or systems with communication functions in addition to vehicles. In addition, the communication system 10 can be a system based on satellite communication or a system based on other types of communication methods, which is not limited in the embodiments of the present disclosure.

[0045] The active antenna 11 includes a first amplifier circuit, which is used to amplify the signal received or transmitted by the active antenna 11. The processing device 12 includes a second amplifier circuit, which is used to amplify the signal received from the active antenna 11 or the signal transmitted to the active antenna 11.

[0046] It can be understood that the signal received by the active antenna 11 can be a signal sent by the processing device 12, or an external signal received by the antenna, such as a Tiantong network signal; the active antenna 11 can also send a signal to the processing device 12, and transmit a signal to the outside. Correspondingly, the signal received by the processing device 12 can be a signal transmitted by the active antenna 11; the processing device 12 can also transmit a signal to the active antenna 11.

[0047] Therefore, both the active antenna 11 and the processing device 12 have built-in amplification circuits, and in the signal transmission and reception scenario, two-stage amplification of the signal can be achieved, and this two-stage amplification can reduce the signal attenuation caused by line loss. Furthermore, the distance between the active antenna 11 and the processing device 12 is no longer limited. For example, in the related art, the distance between the active antenna 11 and the processing device 12 cannot exceed 1 meter, but with this technical solution, the distance between the active antenna 11 and the processing device 12 can be between 5 and 10 meters.

[0048] For signal amplification processing, Example 1: The processing device 12 performs a first-stage amplification on the signal to be sent through the second amplification circuit, and then transmits the first-stage amplified signal to the active antenna 11; then, the active antenna 11 performs a second-stage amplification on the signal transmitted by the processing device 12 through the first amplification circuit, and then transmits the second-stage amplified signal to the external device. Example 2: The active antenna 11 performs a first-stage amplification on the received signal through the first amplification circuit, and then transmits the first-stage amplified signal to the processing device 12; then, the processing device 12 performs a second-stage amplification on the signal transmitted by the active antenna 11 through the second amplification circuit, and then further processes the second-stage amplified signal.

[0049] The signal that the processing device 12 needs to send is a signal generated by a signal source. For example, in a satellite communication scenario, a satellite signal is generated by a satellite baseband (a signal source).

[0050] It can be seen that the active antenna 11 and the processing device 12 have the functions of receiving and transmitting signals respectively. In different application scenarios, the signal flows in different directions, and correspondingly, the two-stage amplification methods of the signal may also be different.

[0051] Figure 2 is a schematic diagram of an amplifier circuit 20 according to an exemplary embodiment. Figure 2 As shown, the amplifier circuit 20 can be a first amplifier circuit or a second amplifier circuit, and the amplifier circuit 20 includes: at least one sub-amplifier circuit 21, each sub-amplifier circuit 21 includes an amplifier and a filter connected to the amplifier, wherein different sub-amplifier circuits 21 include different types of amplifiers.

[0052] In some embodiments, the first amplifier circuit and the second amplifier circuit can both adopt Figure 2 In some other embodiments, the first amplifier circuit or the second amplifier circuit may adopt Figure 2 The implementation of the amplifier circuit 20 shown is not limited here.

[0053] In some embodiments, different types of amplifiers may be: a PA (Power Amplifier) ​​amplifier, an LNA (Low Noise Amplifie) amplifier, and the like.

[0054] The amplifier circuit 20 in the processing device 12 can be integrated in the communication module of the processing device 12. Therefore, the corresponding power supply supplies power to the communication module, which is regarded as supplying power to the amplifier circuit 20. For the amplifier circuit 20 in the active antenna 11, since the active antenna 11 also has a built-in power supply, the power supply can realize the power supply of the amplifier circuit 20.

[0055] In combination with the introduction of the above-mentioned embodiment, the processing device 12 and the active antenna 11 both have the function of receiving or transmitting signals. In addition, since the amplifying circuit 20 may include at least one amplifying device, the use of the amplifying device may also need to be switched. Therefore, the signal transmission and reception switching and the switching of the amplifying device can be realized by corresponding devices.

[0056] As an optional embodiment, the active antenna 11 also includes a first RF switch, which is connected to the first amplifying circuit; and / or the processing device 12 also includes a second RF switch and a baseband, the second RF switch is connected to the second amplifying circuit, and the second amplifying circuit is connected to the baseband.

[0057] For the active antenna 11, the output end of the first RF switch can be connected to the signal transceiver end of the wired antenna, and a signal is sent to the outside or received through the signal transceiver end. The first RF switch can switch the amplifier of the first amplifying circuit and switch the signal transceiver mode. For example, the signal transceiver end can be an antenna interface.

[0058] For the processing device 12, the second RF switch, the second amplifying circuit and the satellite baseband can constitute a communication module. Thus, the baseband can be used as a signal source, and the signal generated by it can be amplified and processed by the second amplifying circuit. Therefore, the second RF switch can switch the amplifier of the second amplifying circuit, and switch the signal transmission and reception mode.

[0059] In the embodiment of the present disclosure, the processing device 12 and the active antenna 11 can be connected by a connecting line, and the length of the connecting line is within a preset length range. For example, the connecting line can be a radio frequency coaxial cable, etc.; the preset length range can be 5 to 10 meters. It can be understood that the implementation method of the connecting line and the implementation method of the preset length range can be set in combination with different application scenarios, and are not limited in the embodiment of the present disclosure.

[0060] It is understandable that if the processing device 12 and the corresponding components of the active antenna 11 are directly connected through a connecting line, it will cause problems such as signal instability and signal confusion. Therefore, in the embodiment of the present disclosure, further connection can be achieved through a radio frequency connector; and when the signal is transmitted to the amplification processing circuit, it can also undergo pre-processing of the signal.

[0061] Figure 3 is a schematic diagram of an active antenna 11 according to an exemplary embodiment. Figure 3 As shown, the active antenna 11 further includes: a first DC blocking capacitor C1 and a first RF connector 110, one end of the first DC blocking capacitor C1 is connected to the first amplifying circuit 112, and the other end of the first DC blocking capacitor C1 is connected to the first RF connector 110. The first RF connector 110 can be used to realize the connection between the active antenna 11 and the processing device 12.

[0062] The first DC blocking capacitor C1 can isolate the first amplifying circuit 112 from other circuits of the active antenna 11 and implement signal transmission, which can allow AC signals to pass through while blocking or significantly attenuating DC signals.

[0063] Figure 4 is a schematic diagram of a processing device 12 according to an exemplary embodiment. Figure 4As shown, the processing device 12 further includes: a second DC blocking capacitor and a second RF connector 120, one end of the second DC blocking capacitor is connected to the second amplifying circuit 122, and the other end of the second DC blocking capacitor is connected to the second RF connector 120. The second RF connector 120 can be used to realize the connection between the active antenna 11 and the processing device 12.

[0064] The second DC blocking capacitor can isolate the second amplifier circuit 122 from other circuits of the processing device 12 and realize signal transmission. It can allow AC signals to pass through, while blocking or significantly attenuating DC signals. In addition, since the second amplifier circuit 122 can be part of the communication module of the processing device 12, the second DC blocking capacitor can also serve as a DC blocking capacitor for the entire communication module.

[0065] Combination Figure 3 and Figure 4 The illustrated embodiment is an optional embodiment in which the active antenna 11 and the processing device 12 are connected by connecting the first RF connector 110 to the second RF connector 120 .

[0066] In the embodiment of the present disclosure, the active antenna 11 includes: a power supply, a first amplifier circuit 112, and a radio frequency switch. It can be understood that for the power supply, if the power supply is always supplied, it will lead to excessive energy consumption. And, for the first amplifier circuit 112 and the radio frequency switch, corresponding switching enable control is required. Therefore, in order to reduce the system power consumption and enable the active antenna 11 to operate stably, a corresponding control circuit can be added to realize the control of the active antenna 11 by the processing device 12.

[0067] Figure 5 FIG. 1 is a schematic diagram showing a partial circuit structure of a communication system 10 according to an exemplary embodiment. Figure 5 As shown, the active antenna 11 includes a first controller 114, and the processing device 12 includes a second controller 124. Based on the connection relationship between the active antenna 11 and the processing device 12, the first controller 114 and the second controller 124 are also considered to have a connection relationship.

[0068] The first controller 114 is connected to the first amplifier circuit 112, and the second controller 124 is connected to the second amplifier circuit 122. Figure 5 The first amplifier circuit 112 and the second amplifier circuit 122 are not shown. It can be understood that the first controller 114 can configure the first amplifier circuit 112 connection end, and the second controller 124 can configure the second amplifier circuit 122 connection end, so as to respectively realize the connection of the corresponding amplifier circuits 20.

[0069] The second controller 124 is used to generate an active antenna control instruction and transmit it to the first controller 114 . The first controller 114 is used to generate an amplifier enable control instruction according to the active antenna control instruction and transmit it to the first amplifying circuit 112 .

[0070] For example, the first controller 114 and the second controller 124 may both be MCU (Microcontroller Unit) controllers. For the first controller 114, it may be configured with at least one enabling terminal, and the at least one enabling terminal is respectively connected to a corresponding circuit or device, for example: the at least one enabling terminal includes a radio frequency enabling terminal, and the radio frequency enabling terminal is connected to a first radio frequency switch and / or an amplifier, so that the radio frequency enabling terminal can transmit an enabling signal to the first radio frequency switch and / or the amplifier.

[0071] For the second controller 124, it can be configured with a serial port and a pulse code modulation port. Since the second amplifying circuit 122 is integrated in the communication module, the serial port and the pulse code modulation port can be connected to the corresponding devices of the communication module, so that the second controller 124 can control each device in the communication module through the serial port and the pulse code modulation port. For example, the pulse code modulation port is used to output the control signal of the second RF switch and / or amplifier.

[0072] Furthermore, based on the implementation of the first controller 114 and the second controller 124, the second controller 124 can also generate an active antenna control instruction and transmit it to the first controller 114. The first controller 114 is used to generate an amplifier enable control instruction according to the active antenna control instruction and transmit it to the first amplification circuit 112.

[0073] In some embodiments, the second controller 124 may generate active antenna control instructions based on the principle of time slot control to reduce system power consumption.

[0074] In the embodiment of the present disclosure, in order to ensure the control stability of the active antenna 11, the signal transmitted to the active antenna 11 may be a signal that has undergone signal processing.

[0075] Figure 6 is a partial circuit structure diagram of another communication system 10 according to an exemplary embodiment. Figure 6As shown, the active antenna 11 further includes a first signal processor 116, a third DC blocking capacitor C3 and a first RF connector 110, the first controller 114 is connected to the first signal processor 116, and the first signal processor 116 is connected to the first RF connector 110. Correspondingly, the processing device 12 further includes a second signal processor 126, a fourth DC blocking capacitor C4 and a second RF connector 120, the second controller 124 is connected to the second signal processor 126, the second signal processor 126 is connected to the second RF connector 120, and the second RF connector 120 is connected to the first RF connector 110.

[0076] The first signal processor 116 and the first controller 114 may be connected via a serial port, and the second signal processor 126 and the second controller 124 may be connected via a serial port.

[0077] Then, the control signal flow between the processing device 12 and the active antenna 11 is: the second controller 124, the second signal processor 126, the fourth DC blocking capacitor C4, the second RF connector 120, the first RF connector 110, the third DC blocking capacitor C3, the first signal processor 116, and the first controller 114.

[0078] It should be noted that the transmission of the control signal and the transmission of the communication signal are separate and independent transmissions, and the processing is also separate and independent processing. It can be understood that on the basis that the processing device 12 and the active antenna 11 are respectively provided with corresponding DC blocking capacitors, independent processing and transmission of signals can be achieved.

[0079] As an optional implementation, the first signal processor 116 and / or the second signal processor 126 is an on-off keying modem.

[0080] For the on-off keying modem, its English name is OOK (full name: On-Off Keying) modem, which can realize signal modulation and demodulation. For example, the model of OOK can be: SN65HVD62. This model of OOK is compatible with the Antenna Interface Standard Group v2.0 specification, and has an active bandpass filter integrated inside to improve the anti-interference ability, suitable for long-distance coaxial medium transmission, and can be compatible with RF signals.

[0081] It can be understood that the implementation of the first signal processor 116 and the second signal processor 126 can refer to the chip structure of this model of OOK, and the specific circuit structure will not be introduced in the embodiment of the present disclosure.

[0082] On the basis of configuring the first controller 114 and the second controller 124 , the processing device 12 can also implement more active antenna 11 controls.

[0083] As an optional implementation, the active antenna 11 also includes a power supply, the first controller 114 is connected to the power supply, and the first controller 114 is further used to generate a power supply control instruction according to the active antenna control instruction and transmit it to the power supply.

[0084] In this implementation, the control mode of the power supply can also be parsed through the active antenna control instruction, so as to perform corresponding enabling control on the power supply.

[0085] As an optional embodiment, the active antenna 11 also includes an analog-to-digital converter, and the first controller 114 is connected to the analog-to-digital converter. The first controller 114 is also used to generate an analog-to-digital converter control instruction according to the active antenna control instruction and transmit it to the analog-to-digital converter. The analog-to-digital converter is used to sample temperature data according to the analog-to-digital converter control instruction.

[0086] The analog-to-digital converter (ADC) is an analog-to-digital converter. The ADC module can be disposed inside the first controller 114 , and can sample corresponding temperature devices such as resistors inside the first controller 114 , implement sampling of temperature data, and further implement temperature monitoring of the active antenna 11 .

[0087] Therefore, the first controller 114 can also parse the control mode of the analog-to-digital converter from the active antenna control instruction, thereby performing corresponding enabling control on the analog-to-digital converter.

[0088] In some embodiments, the communication system 10 is a vehicle-mounted communication system 10, and the active antenna 11 and the processing device 12 are arranged at different positions of the vehicle. For example, the processing device 12 is installed in the cabin area inside the vehicle. The active antenna 11 is installed in an area where the signal is not blocked, such as a spoiler, a sunroof, a front windshield, etc., for receiving communication signals.

[0089] Figure 7 FIG. 1 is a schematic diagram of a circuit structure of an S-BOX according to an exemplary embodiment. The circuit structure can be regarded as an application example of the communication system 10 of the embodiment of the present disclosure. Figure 7 As shown, the S-BOX includes an external active antenna and a split host motherboard. The split host motherboard can be understood as the motherboard part of the split host, which can correspond to the motherboard of the processing device 12 of the communication system 10.

[0090] The circuit structure of the external active antenna can be divided into the signal transmission part, the power supply part and the control part; as well as the connecting devices: RF connector and ANT (antenna interface).

[0091] The signal transmission part includes: a DC blocking capacitor, two amplifying sub-circuits and a radio frequency switch connected in sequence. The first amplifying sub-circuit includes a filter and a PA amplifier, and the second amplifying sub-circuit includes a filter and an LNA amplifier. The radio frequency switch is connected to the ANT.

[0092] The power supply part includes a DC / DC (Direct Current / Direct Current) power supply, which can be connected to the RF connector, PA amplifier and LNA amplifier respectively to realize the power supply of the entire active antenna.

[0093] The control part includes: a DC blocking capacitor, an OOK modem and an MCU controller connected in sequence. The OOK modulator is connected to the MCU controller via a UART (Universal Asynchronous Receiver / Transmitter), which is a bidirectional, serial, asynchronous communication bus used to achieve low-speed data communication. In addition, the MCU controller includes: a power enable terminal, an RF enable terminal and an ADC sampling terminal, which are used to achieve power enable, RF enable and ADC sampling control respectively.

[0094] Regarding the split host motherboard structure, it can be divided into satellite communication module part, control part, power supply part; and connecting device: RF connector.

[0095] The satellite communication module includes: satellite baseband, two amplifying sub-circuits, and RF switch connected in sequence. The first amplifying sub-circuit includes a filter and a PA amplifier, and the second amplifying sub-circuit includes a filter and an LNA amplifier. The RF switch is connected to the RF connector through a DC blocking capacitor.

[0096] The control part includes: an MCU controller, an OOK modem, and a DC blocking capacitor connected in sequence. The MCU controller and the OOK modem are connected via UART.

[0097] In addition, the MCU controller also includes: UART interface, PCM (Pulse Code Modulation) interface and CAN interface. Among them, different UART interfaces can respectively connect the satellite baseband and OOK modem. The CAN interface can realize the communication between S-BOX and the whole vehicle.

[0098] The power supply part includes a DC / DC power supply, which can be connected to the MCU controller and the satellite communication module respectively to realize power supply for the MCU controller and the satellite communication module.

[0099] In addition, the RF connector can also be connected to a power switch, which is powered by a DC / DC power supply with DC12V.

[0100] In addition, the distance between the split host motherboard and the external active antenna can be 5~10 meters.

[0101] based on Figure 7 The circuit structure shown is compared with the related art. The external antenna of the related art adopts a passive antenna, and there is no PA amplifier or LNA amplifier inside. It only has the antenna body and the RF connector. The split host integrates the CAN interface and DC / DC power supply. The satellite communication module integrates the satellite baseband, filter, PA amplifier, LNA amplifier and RF switch. Since the RF transmitting and receiving amplifiers are only one level inside the module, the line length of the split host and the external active antenna is limited to less than 1 meter, which has many limitations. If it exceeds 1 meter, the RF signal will be severely attenuated, causing communication instability and other problems.

[0102] In the disclosed embodiment, an external active antenna solution is adopted, and the antenna end integrates a PA amplifier, an LNA amplifier, a filter, an RF switch, etc., and performs a first-level amplification and filtering on the received and transmitted signals at the antenna end, and switches between receiving and transmitting signals. Then, it is sent to the satellite communication module of the host, and the satellite communication module also integrates a PA amplifier, an LNA amplifier, a filter, an RF switch, etc., to perform a second-level amplification and filtering, and switches between receiving and transmitting signals. By adopting two-stage amplification, the signal attenuation caused by the wiring harness can be compensated, so that the distance between the split host and the external active antenna is not limited (it can be 5 to 10 meters, meeting the vehicle installation requirements), and the installation is flexible.

[0103] In addition, the split host and the external active antenna adopt a one-line communication mode. The MCU controller, OOK modem, ADC temperature sampling, DC / DC power supply, etc. are integrated on the external active antenna. The split host integrates the MCU controller, OOK modem, DC / DC power supply, power supply switch, satellite communication module, etc.; the satellite communication module integrates the PA amplifier, LNA amplifier, filter, RF switch, etc. Through the PA amplifier enable control, LNA amplifier enable control, DC / DC power supply enable control and ADC temperature sampling data control of the external active antenna, low-power time-sharing logic control, temperature status monitoring, power supply control, etc. are realized.

[0104] Therefore, the external active antenna is equivalent to an intelligent antenna. The one-line coaxial cable between the split host and the external active antenna transmits the antenna power DC signal, OOK modulation and demodulation signal, Tiantong satellite communication RF receiving and transmitting signal, etc. The one-line solution has simple requirements for the wiring harness and is not restricted in installation distance, which simplifies the difficulty of project implementation.

[0105] Furthermore, the technical solution of the embodiment of the present disclosure can have the following technical effects:

[0106] The distance between the processing device 12 and the active antenna 11 is not limited, and the installation is flexible.

[0107] The first-level RF signal amplification is performed on the antenna end, and the second-level RF signal amplification is performed on the processing device end. The overall system performance of the product is high, the product call effect is good, and the user experience is good.

[0108] The time-slot level control of PA amplifier and LAN amplifier enablement and the enablement control of DC / DC power supply can all be achieved through the modem signal transceiver solution to achieve the lowest power consumption.

[0109] In the one-line solution, only one RF coaxial cable needs to be arranged between the processing device 12 and the active antenna, and no additional control line and power supply line are required. The project implementation is simple and the solution is easy to implement.

[0110] The temperature detection function and antenna power supply detection function added at the antenna end realize intelligent detection and intelligent control of the antenna.

[0111] Figure 8 800 is a functional block diagram of a vehicle according to an exemplary embodiment. The vehicle 800 may include various subsystems, such as an infotainment system 810, a perception system 820, a decision control system 830, a drive system 840, and an on-board communication system 850. The vehicle 800 may also include more or fewer subsystems, and each subsystem may include multiple components. In addition, each subsystem and each component of the vehicle 800 may be interconnected by wire or wirelessly.

[0112] Among them, the vehicle-mounted communication system 850 can adopt the implementation of the communication system 10 provided in the embodiment of the present disclosure.

[0113] In some embodiments, the infotainment system 810 may include a communication system, an entertainment system, and a navigation system, etc.

[0114] The perception system 820 may include several sensors for sensing information about the environment around the vehicle 800. For example, the perception system 820 may include a global positioning system (the global positioning system may be a GPS system, or a Beidou system or other positioning systems), an inertial measurement unit (IMU), a laser radar, a millimeter wave radar, an ultrasonic radar, and a camera.

[0115] The decision control system 830 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0116] The drive system 840 may include components that provide powered motion for the vehicle 800. In one embodiment, the drive system 840 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of an internal combustion engine, an electric motor, and an air compression engine. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0117] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0118] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0119] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A communication system, characterized in that: include: An active antenna, the active antenna comprising a first amplifying circuit, the first amplifying circuit being used to amplify a signal received or transmitted by the active antenna; A processing device connected to the active antenna, the processing device comprising a second amplifying circuit, wherein the second amplifying circuit is used to amplify a signal received from the active antenna or a signal transmitted to the active antenna.

2. The communication system according to claim 1, characterized in that The active antenna further includes a first DC blocking capacitor and a first RF connector, one end of the first DC blocking capacitor is connected to the first amplifying circuit, and the other end of the first DC blocking capacitor is connected to the first RF connector; and / or, The processing device further includes a second DC blocking capacitor and a second RF connector, one end of the second DC blocking capacitor is connected to the second amplifying circuit, and the other end of the second DC blocking capacitor is connected to the second RF connector; The first RF connector and / or the second RF connector are used to connect the active antenna and the processing device.

3. The communication system according to claim 1, characterized in that: The active antenna includes a first controller connected to the first amplifying circuit, and the processing device includes a second controller connected to the second amplifying circuit; The second controller is used to generate an active antenna control instruction and transmit it to the first controller, and the first controller is used to generate an amplifier enable control instruction according to the active antenna control instruction and transmit it to the first amplifying circuit.

4. The communication system according to claim 3, characterized in that: The active antenna further includes a first signal processor, a third DC blocking capacitor and a first RF connector, the first controller is connected to the first signal processor, and the first signal processor is connected to the first RF connector; The processing device also includes a second signal processor, a fourth DC blocking capacitor and a second RF connector. The second controller is connected to the second signal processor, the second signal processor is connected to the second RF connector, and the second RF connector is connected to the first RF connector.

5. The communication system according to claim 4, characterized in that: The first signal processor and / or the second signal processor is an on-off keying modem.

6. The communication system according to claim 2 or 4, characterized in that: The first RF connector is connected to the second RF connector via a connecting line, and the length of the connecting line is within a preset length range.

7. The communication system according to any one of claims 3 to 5, characterized in that: The active antenna also includes a power supply, the first controller is connected to the power supply, and the first controller is further used to generate a power supply control instruction according to the active antenna control instruction and transmit it to the power supply.

8. The communication system according to any one of claims 3 to 5, characterized in that: The active antenna also includes an analog-to-digital converter, the first controller is connected to the analog-to-digital converter, the first controller is also used to generate an analog-to-digital converter control instruction according to the active antenna control instruction, and transmit it to the analog-to-digital converter, and the analog-to-digital converter is used to sample temperature data according to the analog-to-digital converter control instruction.

9. The communication system according to claim 1, characterized in that: At least one of the first amplifying circuit and the second amplifying circuit comprises: At least one sub-amplifier circuit, each of the sub-amplifier circuits includes an amplifier and a filter connected to the amplifier, wherein different sub-amplifier circuits include amplifiers of different types.

10. The communication system according to claim 1 or 9, characterized in that: The active antenna further includes a first radio frequency switch, wherein the first radio frequency switch is connected to the first amplifying circuit; and / or, The processing device further includes a second radio frequency switch and a baseband, wherein the second radio frequency switch is connected to the second amplifying circuit, and the second amplifying circuit is connected to the baseband.

11. The communication system according to claim 1, characterized in that: The communication system is a vehicle-mounted communication system, and the active antenna and the processing device are arranged at different positions of the vehicle.

12. A vehicle, characterized in that: The vehicle comprises: A communication system as claimed in any one of claims 1 to 11.

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