CN112929038A - Vehicle-mounted radio frequency device, system and automobile - Google Patents
Vehicle-mounted radio frequency device, system and automobile Download PDFInfo
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- CN112929038A CN112929038A CN202110175989.XA CN202110175989A CN112929038A CN 112929038 A CN112929038 A CN 112929038A CN 202110175989 A CN202110175989 A CN 202110175989A CN 112929038 A CN112929038 A CN 112929038A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Abstract
The invention provides a vehicle-mounted radio frequency device, a system and an automobile, which relate to the technical field of vehicle-mounted radio frequency, and the vehicle-mounted radio frequency device comprises: the system comprises an antenna module, vehicle-mounted equipment and a radio frequency channel; the antenna module is connected with the vehicle-mounted equipment through a radio frequency channel; wherein, the antenna module includes: a combining unit and a plurality of radio frequency antennas; the antenna connecting ends of the merging units are respectively connected with the plurality of radio frequency antennas; the radio frequency connecting end of the merging unit is connected with the radio frequency channel; the merging unit is used for merging the radio frequency signals of the radio frequency antennas and transmitting the radio frequency signals to the vehicle-mounted equipment through a radio frequency channel; the radio frequency antenna is used for receiving and transmitting radio frequency signals; the radio frequency channel is used for providing a signal transmission channel of a radio frequency signal; the vehicle-mounted equipment is used for controlling the vehicle through the radio frequency signal. The vehicle-mounted radio frequency device integrates radio frequency channels corresponding to a plurality of traditional radio frequency antennas into one radio frequency channel, reduces the number of connecting wires between the antennas and vehicle-mounted equipment, and improves the installation and maintenance efficiency of the radio frequency antennas.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted radio frequency, in particular to a vehicle-mounted radio frequency device, a system and an automobile.
Background
Along with the development of intelligent car networking, the antenna of mobile unit is more and more in the car, for example GNSS antenna, many 5G/4G/3G antennas, C-V2X antenna etc. all antennas add up to have more than ten, every antenna passes through respective radio frequency channel and mobile unit links to each other, mobile unit can increase a plurality of radio frequency connectors and radio frequency connecting wire, this can increase mobile unit cost and equipment volume to a great extent, a plurality of interface connectors and connecting wire can make the installation and debugging technology complicated, and can also cause the wrong connection.
When the vehicle-mounted antenna in the prior art is connected with the vehicle-mounted equipment, a plurality of radio frequency channels are arranged, each radio frequency channel is provided with a radio frequency connector and a radio frequency line, and therefore the vehicle-mounted equipment is provided with a plurality of radio frequency connectors and radio frequency lines. Because the radio frequency connector and the radio frequency line of the vehicle-mounted equipment are expensive, the traditional vehicle-mounted antenna is higher in cost for connecting the vehicle-mounted equipment, and meanwhile, because the number of the radio frequency connectors and the radio frequency lines is large, the installation process is also complex.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a vehicle-mounted rf device, a system and a vehicle, which integrate the rf channels corresponding to a plurality of conventional rf antennas into one rf channel, so that only one rf channel is needed between an antenna module and a vehicle-mounted device to complete transmission of rf signals, which is beneficial to reducing the number of connection lines between the antenna and the vehicle-mounted device, and improving the installation and maintenance efficiency of the rf antenna.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted radio frequency device, where the vehicle-mounted radio frequency device includes: the system comprises an antenna module, vehicle-mounted equipment and a radio frequency channel; the antenna module is connected with the vehicle-mounted equipment through a radio frequency channel;
the antenna module includes: a combining unit and a plurality of radio frequency antennas; the antenna connecting ends of the merging units are respectively connected with the plurality of radio frequency antennas; the radio frequency connecting end of the merging unit is connected with the radio frequency channel; the merging unit is used for merging the radio frequency signals of the radio frequency antennas and transmitting the radio frequency signals to the vehicle-mounted equipment through a radio frequency channel; the radio frequency antenna is used for receiving and transmitting radio frequency signals;
the radio frequency channel is used for providing a signal transmission channel of a radio frequency signal; the vehicle-mounted equipment is used for controlling the vehicle through the radio frequency signal.
In some embodiments, the merging unit comprises: the device comprises a mixer, a combination matcher and a combination filter corresponding to a plurality of radio frequency antennas;
each radio frequency antenna is respectively connected with each corresponding combined filter, and the antenna connecting end of each combined filter is used as the antenna connecting end of each combined unit and is used for connecting the corresponding radio frequency antenna;
the merging filter is connected with the mixer after passing through the corresponding merging matcher; the radio frequency connecting end of the mixer is used as the radio frequency connecting end of the merging unit and is used for connecting a radio frequency channel.
In some embodiments, an in-vehicle apparatus includes: the system comprises a splitting unit and a vehicle-mounted communication module; the antenna connecting end of the splitting unit is connected with the radio frequency channel; the communication connecting end of the splitting unit is connected with the vehicle-mounted communication module;
the splitting unit is used for splitting radio frequency signals corresponding to a plurality of radio frequency antennas in the radio frequency channel;
the vehicle-mounted communication module is used for carrying out radio frequency communication according to radio frequency signals corresponding to the radio frequency antennas.
In some embodiments, the splitting unit comprises: the radio frequency antenna comprises a hybrid splitter, a plurality of splitting filters and splitting matchers, wherein the splitting filters and the splitting matchers respectively correspond to the radio frequency antenna;
the channel connecting end of the hybrid splitter is connected with the radio frequency channel; the filter connecting ends of the hybrid splitters are respectively connected with the plurality of splitting filters; the split filter is connected with the vehicle-mounted communication module after being connected with the corresponding split matcher.
In some embodiments, the combining filter and the splitting filter corresponding to the same rf antenna are the same band pass filter; the combining matcher and the splitting matcher which correspond to the same radio frequency antenna are the same impedance matcher.
In some embodiments, a radio frequency antenna, comprising: a GNSS antenna, a C-V2X antenna, and one or more mobile communications antennas.
In some embodiments, the radio frequency signal of the GNSS antenna is unidirectionally input to the antenna connection terminal corresponding to the combining unit.
In some embodiments, the rf signals of the C-V2X antenna and the mobile communication antenna are inputted to the antenna connection terminals corresponding to the combining unit in a bidirectional manner.
In a second aspect, an embodiment of the present invention provides a vehicle-mounted radio frequency system, where the vehicle-mounted radio frequency system includes: the antenna control module and the radio frequency control module are respectively connected with the radio frequency device; the radio frequency device comprises the vehicle-mounted radio frequency device mentioned in the first aspect;
the radio frequency device is connected with the antenna control module and the radio frequency control module through a built-in radio frequency channel;
the antenna control module is used for controlling the working state of the vehicle-mounted radio frequency antenna;
the radio frequency control module is used for controlling the radio frequency signal.
In a third aspect, the embodiment of the present invention provides an automobile, which includes the vehicle-mounted radio frequency system mentioned in the second aspect.
The embodiment of the invention has the following beneficial effects:
the invention provides a vehicle-mounted radio frequency device, a system and an automobile, wherein the vehicle-mounted radio frequency device comprises: the system comprises an antenna module, vehicle-mounted equipment and a radio frequency channel; the antenna module is connected with the vehicle-mounted equipment through a radio frequency channel; wherein, the antenna module includes: a combining unit and a plurality of radio frequency antennas; the antenna connecting ends of the merging units are respectively connected with the plurality of radio frequency antennas; the radio frequency connecting end of the merging unit is connected with the radio frequency channel; the merging unit is used for merging the radio frequency signals of the radio frequency antennas and transmitting the radio frequency signals to the vehicle-mounted equipment through a radio frequency channel; the radio frequency antenna is used for receiving and transmitting radio frequency signals; the radio frequency channel is used for providing a signal transmission channel of a radio frequency signal; the vehicle-mounted equipment is used for controlling the vehicle through the radio frequency signal. The vehicle-mounted radio frequency device integrates radio frequency channels corresponding to a plurality of traditional radio frequency antennas into one radio frequency channel, so that only one radio frequency channel is needed between the antenna module and the vehicle-mounted equipment to complete the transmission of radio frequency signals, the number of connecting wires between the antennas and the vehicle-mounted equipment is reduced, and the installation and maintenance efficiency of the radio frequency antennas is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention as set forth above.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a vehicle-mounted radio frequency device in the prior art according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle-mounted radio frequency device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a merging unit in a vehicle-mounted radio frequency device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an on-board device in an on-board radio frequency device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a vehicle-mounted radio frequency system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an automobile according to an embodiment of the present invention.
Icon:
100-an antenna module; 110-a merging unit; 120-a radio frequency antenna; 200-a vehicle-mounted device; 300-a radio frequency channel; 111-a mixer; 112-merge matcher; 113-a combining filter; 210-split unit; 220-vehicle communication module; 211-a hybrid splitter; 212-splitting filter; 213-split matcher; 510-a radio frequency device; 520-an antenna control module; 530-radio frequency control module.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Along with the development of intelligent car networking, the antenna of mobile unit is more and more in the car, for example GNSS antenna, many 5G/4G/3G antennas, C-V2X antenna etc. all antennas add up to have more than ten, every antenna passes through respective radio frequency channel and mobile unit links to each other, mobile unit can increase a plurality of radio frequency connectors and radio frequency connecting wire, this can increase mobile unit cost and equipment volume to a great extent, a plurality of interface connectors and connecting wire can make the installation and debugging technology complicated, and can also cause wrong connection etc..
In a conventional vehicle-mounted antenna-connected vehicle-mounted device, each antenna shares one radio frequency channel to be connected to the vehicle-mounted device, so that the vehicle-mounted device has a plurality of radio frequency channels connected to the antennas, as shown in fig. 1. It can be seen that the conventional vehicle-mounted antenna is connected with the vehicle-mounted equipment and has a plurality of radio frequency channels, each radio frequency channel is provided with a radio frequency connector and a radio frequency line, and thus the vehicle-mounted equipment is provided with a plurality of radio frequency connectors and radio frequency lines.
Based on this, the embodiment of the invention provides a vehicle-mounted radio frequency device, a system and an automobile, wherein radio frequency channels corresponding to a plurality of traditional radio frequency antennas are integrated into one radio frequency channel, so that only one radio frequency channel is needed between an antenna module and vehicle-mounted equipment to complete the transmission of radio frequency signals, the integration of the plurality of antenna radio frequency channels of the vehicle-mounted equipment into one antenna radio frequency channel is realized, the antenna radio frequency channels of the vehicle-mounted equipment are normalized, and the vehicle-mounted radio frequency device, the system and the automobile are beneficial to reducing the product cost and the volume of the radio frequency equipment; meanwhile, the efficiency of installation and debugging is improved, and the reliability and the stability of the radio frequency device are improved.
In order to facilitate understanding of the embodiment, a detailed description is first given of a vehicle-mounted radio frequency device disclosed in the embodiment of the present invention.
Referring to fig. 2, a schematic structural diagram of a vehicle-mounted radio frequency device is shown, where the vehicle-mounted radio frequency device includes: the antenna module 100, the vehicle-mounted equipment 200 and the radio frequency channel 300; the antenna module 100 is connected with the vehicle-mounted equipment 200 through a radio frequency channel 300;
the antenna module 100 includes: a combining unit 110 and a plurality of rf antennas 120; the antenna connection ends of the combining unit 110 are respectively connected to the plurality of rf antennas 120; the rf connection end of the merging unit 110 is connected to the rf channel 300; the combining unit 110 is configured to combine the radio frequency signals of the radio frequency antenna 120 and transmit the combined radio frequency signals to the vehicle-mounted device 200 through the radio frequency channel 300; the rf antenna 120 is used for receiving and transmitting rf signals;
the rf channel 300 is used to provide a signal transmission channel of an rf signal, such as a transmission channel related to a navigation positioning rf signal, a network communication rf signal, a C-V2X (vehicle to electronic, internet of vehicles) rf signal, and the like; the vehicle-mounted device 200 is used for controlling a vehicle through radio frequency signals, and is a device such as a navigation device, a vehicle networking module, a vehicle-mounted telephone and the like.
Specifically, the vehicle-mounted rf device in this embodiment includes a plurality of rf antennas 120, and these rf antennas 120 are directly connected to the vehicle-mounted device 200 in the prior art; the vehicle-mounted rf device in this embodiment combines the rf antennas 120 through the combining unit 110, and is directly connected to the vehicle-mounted device 200 through the rf channel 300 after the combination is completed. The combining unit 110 and the rf antennas 120 form the antenna module 100, and different rf antennas 120 are respectively connected to the combining unit 110 through respective rf channels, which can be understood as that the rf channels of the rf antennas 120 are encapsulated in the antenna module. Therefore, the whole vehicle-mounted radio frequency device can realize the connection of a plurality of radio frequency antennas and vehicle-mounted equipment through only one radio frequency channel 300.
According to the vehicle-mounted radio frequency device provided in the embodiment, the radio frequency channels corresponding to the traditional multiple radio frequency antennas are integrated into one radio frequency channel, so that only one radio frequency channel is needed between the antenna module and the vehicle-mounted equipment to complete transmission of radio frequency signals, the number of connecting lines between the antenna and the vehicle-mounted equipment is reduced, and the installation and maintenance efficiency of the radio frequency antennas is improved.
The combining unit 110 in fig. 2 integrates the rf antennas 120 of different rf types, and the rf antennas 120 need to be matched and integrated in the combining unit 110, specifically, see the schematic structural diagram of the combining unit shown in fig. 3, where the combining unit 110 includes: a mixer 111, and a combining matcher 112 and a combining filter 113 corresponding to the plurality of rf antennas 120.
Each rf antenna 120 is connected to each corresponding combining filter 113, and an antenna connection end of the combining filter 113 is used as an antenna connection end of the combining unit 110 for connecting to the corresponding rf antenna; the combining filter 113 is connected with the mixer 111 after passing through the corresponding combining matcher 112; the rf connection of the mixer 111 serves as the rf connection of the combining unit 110 for connecting the rf channels 300.
When the radio frequency signal in the radio frequency channel 300 is uniformly transmitted to the vehicle-mounted device 200, the vehicle-mounted device 200 needs to split the combined radio frequency signal into a plurality of radio frequency signals before combination, specifically, see a schematic structural diagram of the vehicle-mounted device shown in fig. 4, where the vehicle-mounted device 200 includes: a splitting unit 210 and a vehicle-mounted communication module 220; the antenna connection end of the splitting unit 210 is connected to the rf channel 300; the communication connecting end of the splitting unit 210 is connected with the vehicle-mounted communication module 220; the splitting unit 210 is configured to split radio frequency signals corresponding to multiple radio frequency antennas in the radio frequency channel 300; the vehicle-mounted communication module 220 is configured to perform radio frequency communication according to radio frequency signals corresponding to the plurality of radio frequency antennas.
Specifically, the splitting unit 210 includes: a hybrid splitter 211, and a plurality of splitting filters 212 and splitting matchers 213 respectively corresponding to the radio frequency antennas; the channel connection end of the hybrid splitter 211 is connected to the rf channel 300; the filter connection ends of the hybrid splitter 211 are connected to the plurality of splitting filters 212, respectively; the splitting filter 212 and the corresponding splitting matcher 213 are connected with the vehicle-mounted communication module 220.
The combining filter and the splitting filter corresponding to the same rf antenna in fig. 3 and 4 may be the same band pass filter; the combining matcher and the splitting matcher which correspond to the same radio frequency antenna are the same impedance matcher. A radio frequency antenna, comprising: a GNSS antenna, a C-V2X antenna, and one or more mobile communications antennas, such as mobile communications antennas that may use 5G, 4G, etc. protocols in conjunction with particular communications protocols. For example, in a GNSS frequency band, a combining filter in the antenna module and a splitting filter in the vehicle-mounted device are the same band-pass filter; the combined matcher in the antenna module and the split matcher in the vehicle-mounted equipment are the same impedance matcher. The filters and the matchers under the frequency bands of other different antennas are the same as those under the GNSS frequency band, and are not described again.
The radio frequency signal frequency band of each antenna corresponds to a respective band-pass filter, and the band-pass filters gate target signals corresponding to the respective antennas and suppress out-of-band signals; the band-pass filters are connected with the mixer through an impedance matcher so that the mixer and each band-pass filter carry out impedance matching on the corresponding frequency band; all the radio frequency signals are mixed in a mixer, and the mixer mixes the multiple signals into one signal, so that the multiple antenna signals are normalized into one signal.
One path of received signals needs to be mixed and branched into multiple paths of signals at a vehicle-mounted end, or the multiple paths of transmitted signals need to be mixed into one path of transmitted signals, each path of branched signals passes through a band-pass filter and is subjected to matching of respective frequency bands and radio frequency interface connection corresponding to a vehicle-mounted communication module, and matching of respective frequency bands is achieved. Each branch signal is connected with the corresponding radio frequency interface of the vehicle-mounted communication module through the band-pass filter and the matching of the respective frequency bands, so that the vehicle-mounted end mixes and branches one received signal into a plurality of signals or mixes a plurality of transmitted branch signals into one normalized signal.
In some embodiments, the radio frequency signal of the GNSS antenna is unidirectionally input to the antenna connection end corresponding to the combining unit; the radio frequency signals of the C-V2X antenna and the mobile communication antenna are bidirectionally input to the antenna connecting end corresponding to the merging unit.
The band-pass filter of each frequency band and the corresponding impedance matcher are matched according to the respective frequency band, and the frequency outside the frequency band is high-impedance. Due to the design, the band isolation degree between the band-pass filters is very large, the band-pass filters hardly attenuate signals in the band, and the impedance of the band-pass filters to signals outside the band is very large and is close to an open circuit. The normalized radio frequency channel transmission method can meet the requirement of different frequency bands for transmission by the normalized radio frequency channel, so that each frequency band has its own channel and is isolated from each other, and the purpose of transmitting a plurality of antenna signals by one radio frequency channel according to frequency division is realized.
As can be seen from the vehicle-mounted radio frequency device mentioned in the above embodiment, the vehicle-mounted radio frequency device includes: the system comprises an antenna module, vehicle-mounted equipment and a radio frequency channel; the antenna module is connected with the vehicle-mounted equipment through a radio frequency channel; wherein, the antenna module includes: a combining unit and a plurality of radio frequency antennas; the antenna connecting ends of the merging units are respectively connected with the plurality of radio frequency antennas; the radio frequency connecting end of the merging unit is connected with the radio frequency channel; the merging unit is used for merging the radio frequency signals of the radio frequency antennas and transmitting the radio frequency signals to the vehicle-mounted equipment through a radio frequency channel; the radio frequency antenna is used for receiving and transmitting radio frequency signals; the radio frequency channel is used for providing a signal transmission channel of a radio frequency signal; the vehicle-mounted equipment is used for controlling the vehicle through the radio frequency signal. The vehicle-mounted radio frequency device integrates radio frequency channels corresponding to a plurality of traditional radio frequency antennas into one radio frequency channel, so that only one radio frequency channel is needed between the antenna module and the vehicle-mounted equipment to complete the transmission of radio frequency signals, the number of connecting wires between the antennas and the vehicle-mounted equipment is reduced, and the installation and maintenance efficiency of the radio frequency antennas is improved.
An embodiment of the present invention provides a vehicle-mounted radio frequency system, as shown in fig. 5, the vehicle-mounted radio frequency system includes: a radio frequency device 510, and an antenna control module 520 and a radio frequency control module 530 respectively connected to the radio frequency device 510; the radio frequency device 510 includes the vehicle-mounted radio frequency device mentioned in the above embodiment;
the radio frequency device 510 is connected with the antenna control module 520 and the radio frequency control module 530 through a built-in radio frequency channel;
the antenna control module 520 is used for controlling the working state of the vehicle-mounted radio frequency antenna;
the rf control module 530 is used for controlling the rf signal.
The radio frequency device provided by the embodiment of the invention has the same technical characteristics as the vehicle-mounted radio frequency device provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved. For the sake of brevity, where not mentioned in the section of the embodiments, reference may be made to the corresponding matters in the foregoing embodiments.
An embodiment of the present invention provides an automobile, as shown in fig. 6, which includes the vehicle-mounted radio frequency system mentioned in the foregoing embodiment.
The vehicle-mounted radio frequency system provided by the embodiment of the invention has the same technical characteristics as the vehicle-mounted radio frequency system provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved. For the sake of brevity, where not mentioned in the section of the embodiments, reference may be made to the corresponding matters in the foregoing embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A vehicle radio frequency device, comprising: the system comprises an antenna module, vehicle-mounted equipment and a radio frequency channel; the antenna module is connected with the vehicle-mounted equipment through the radio frequency channel;
the antenna module includes: a combining unit and a plurality of radio frequency antennas; the antenna connecting ends of the merging units are respectively connected with the plurality of radio frequency antennas; the radio frequency connecting end of the merging unit is connected with the radio frequency channel; the merging unit is used for merging the radio frequency signals of the radio frequency antennas and transmitting the radio frequency signals to the vehicle-mounted equipment through the radio frequency channel; the radio frequency antenna is used for receiving and sending radio frequency signals;
the radio frequency channel is used for providing a signal transmission channel of a radio frequency signal; the vehicle-mounted equipment is used for controlling the vehicle through the radio frequency signal.
2. The in-vehicle radio frequency apparatus according to claim 1, wherein the merging unit includes: the mixer, and a combination matcher and a combination filter corresponding to the plurality of radio frequency antennas;
each radio frequency antenna is respectively connected with each corresponding combined filter, and the antenna connecting end of each combined filter is used as the antenna connecting end of each combined unit and is used for connecting the corresponding radio frequency antenna;
the merging filter is connected with the mixer after passing through the corresponding merging matcher; and the radio frequency connecting end of the mixer is used as the radio frequency connecting end of the merging unit and is used for connecting a radio frequency channel.
3. The in-vehicle radio frequency apparatus according to claim 2, wherein the in-vehicle device includes: the system comprises a splitting unit and a vehicle-mounted communication module; the antenna connecting end of the splitting unit is connected with the radio frequency channel; the communication connecting end of the splitting unit is connected with the vehicle-mounted communication module;
the splitting unit is configured to split radio frequency signals corresponding to the plurality of radio frequency antennas in the radio frequency channel;
the vehicle-mounted communication module is used for carrying out radio frequency communication according to radio frequency signals corresponding to the radio frequency antennas.
4. The in-vehicle radio frequency device according to claim 3, wherein the splitting unit includes: the hybrid splitter, and a plurality of splitting filters and splitting matchers respectively corresponding to the radio frequency antenna;
the channel connecting end of the hybrid splitter is connected with the radio frequency channel; the filter connecting ends of the hybrid splitters are respectively connected with the plurality of splitting filters; the split filter is connected with the corresponding split matcher and then connected with the vehicle-mounted communication module.
5. The vehicle-mounted radio frequency device according to claim 4, wherein the combining filter and the splitting filter corresponding to the same radio frequency antenna are the same band-pass filter; the combining matcher and the splitting matcher which correspond to the same radio frequency antenna are the same impedance matcher.
6. The in-vehicle radio frequency device according to claim 1, wherein the radio frequency antenna comprises: a GNSS antenna, a C-V2X antenna, and one or more mobile communications antennas.
7. The on-vehicle radio frequency device according to claim 6, wherein the radio frequency signal of the GNSS antenna is inputted to the antenna connection terminal corresponding to the combining unit in a unidirectional manner.
8. The vehicle-mounted radio frequency device according to claim 6, wherein radio frequency signals of the C-V2X antenna and the mobile communication antenna are bidirectionally input to the antenna connection terminals corresponding to the merging unit.
9. A vehicle radio frequency system, comprising: the antenna control module and the radio frequency control module are respectively connected with the radio frequency device; the radio frequency device comprises the vehicle-mounted radio frequency device of any one of claims 1 to 8;
the radio frequency device is connected with the antenna control module and the radio frequency control module through a built-in radio frequency channel;
the antenna control module is used for controlling the working state of the vehicle-mounted radio frequency antenna;
the radio frequency control module is used for controlling the radio frequency signal.
10. A vehicle comprising the on-board radio frequency system of claim 9.
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| CN202110175989.XA CN112929038A (en) | 2021-02-09 | 2021-02-09 | Vehicle-mounted radio frequency device, system and automobile |
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| CN202110175989.XA CN112929038A (en) | 2021-02-09 | 2021-02-09 | Vehicle-mounted radio frequency device, system and automobile |
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| CN211918575U (en) * | 2019-11-29 | 2020-11-13 | 惠州市德赛西威汽车电子股份有限公司 | FM/AM and GNSS signal transmission circuit and automobile electronic system thereof |
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