CN216850317U - Circuit for V2X device, V2X device and vehicle - Google Patents
Circuit for V2X device, V2X device and vehicle Download PDFInfo
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- CN216850317U CN216850317U CN202220722105.8U CN202220722105U CN216850317U CN 216850317 U CN216850317 U CN 216850317U CN 202220722105 U CN202220722105 U CN 202220722105U CN 216850317 U CN216850317 U CN 216850317U
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Abstract
The present disclosure relates to a circuit for a V2X device, a V2X device and a vehicle, applicable in the field of unmanned vehicles, the circuit comprising: a main control unit; a navigation unit and a V2X unit respectively connected with the main control unit; and one end of the power dividing circuit is connected with the navigation unit and the V2X unit respectively, the other end of the power dividing circuit is connected to an external connection end, and the external connection end is used for accessing a navigation antenna. On the premise of not influencing the performance, based on the setting of the power dividing circuit, the transmission of two paths of navigation signals can be realized only by installing one antenna, and the equipment volume and the peripheral cost can be effectively reduced.
Description
Technical Field
The present disclosure relates to the field of vehicle technologies, and in particular, to a circuit for a V2X device, a V2X device, and a vehicle.
Background
In the field of vehicles, a Vehicle networking communication technology (V2X, Vehicle to evolution) is used as a realization technology for Vehicle-road cooperation, can greatly improve traffic operation efficiency, and is widely applied to the fields of Vehicle communication, automatic driving and the like at present.
The V2X device is used as a basic hardware unit in the field of vehicle-road cooperation and can provide communication between vehicles and vehicles, between vehicles and roads and between vehicles and clouds.
Navigation signals (e.g., GNSS signals) accessed from the outside by a navigation antenna (e.g., a global navigation satellite system GNSS antenna) in a V2X device provide the necessary 1PPS (pulse per second) signals and timing position information for the vehicle.
SUMMERY OF THE UTILITY MODEL
In development, it was found that the following technical problems need to be solved or at least partially solved: for V2X devices, the main control unit needs to access 1PPS and timing position information transmitted by an antenna through a navigation module, the V2X unit also needs to acquire navigation signals from the outside, and for this type of V2X devices, two antennas are needed to provide two paths of navigation signals respectively; no matter the active antenna or the passive antenna is adopted, the design of a hardware circuit and a peripheral structure is relatively complex; in view of this, embodiments of the present disclosure provide a circuit for a V2X device, a V2X device, and a vehicle.
In a first aspect, embodiments of the present disclosure provide a circuit for a V2X device. The above circuit includes: a main control unit; a navigation unit and a V2X unit respectively connected with the main control unit; and one end of the power dividing circuit is respectively connected with the navigation unit and the V2X unit, the other end of the power dividing circuit is connected to an external terminal, and the external terminal is used for accessing a navigation antenna.
According to an embodiment of the present disclosure, the navigation antenna is an active navigation antenna, and the circuit further includes: a capacitor connected between the power dividing circuit and the external terminal; and the power supply output end of the power supply circuit is connected between the capacitor and the external connection end.
According to an embodiment of the present disclosure, the power supply circuit includes: the output end of the power supply module is connected between the capacitor and the external connection end through the inductor.
According to an embodiment of the present disclosure, the power dividing circuit includes: a one-to-two microstrip power divider; and an impedance matching circuit arranged on at least one of the input path or the output path of the one-to-two microstrip power divider.
According to an embodiment of the present disclosure, the impedance matching circuit is an L-C circuit.
According to an embodiment of the present disclosure, the power dividing circuit includes: a first resistor, a second resistor and a third resistor; one end of the second resistor and one end of the third resistor are connected in parallel to one end of the first resistor, the other end of the first resistor is connected to the external terminal, the other end of the second resistor is connected to the navigation unit, and the other end of the third resistor is connected to the V2X unit; the navigation antenna is an active navigation antenna connected with a signal amplification unit, a preset reference of a gain of the signal amplification unit needs to be higher than insertion losses of the first resistor, the second resistor and the third resistor, and the gain is a target gain value obtained by increasing a required signal gain value on the basis of the preset reference.
According to an embodiment of the present disclosure, the above circuit further includes: and the antenna socket is fixedly connected or detachably connected with the external connection end.
According to this disclosed embodiment, install above-mentioned navigation antenna on the above-mentioned antenna socket, above-mentioned navigation antenna includes: a signal transmission antenna and a low noise amplifier, wherein the low noise amplifier is connected between the signal transmission antenna and the antenna socket.
In a second aspect, embodiments of the present disclosure provide a V2X apparatus. The V2X device described above includes a circuit as described above.
In a third aspect, embodiments of the present disclosure provide a vehicle. The vehicle includes a circuit as described above or a V2X device as described above.
The technical scheme provided by the embodiment of the disclosure at least has part or all of the following advantages:
the power dividing circuit is arranged in the navigation signal transmission path of the navigation unit and the navigation signal transmission path of the V2X unit, only one path of navigation antenna needs to be arranged, one path of navigation signal which is connected in series from the navigation antenna is subjected to power distribution through the power dividing circuit and is transmitted to the navigation unit and the V2X unit respectively, for V2X equipment which needs to be provided with two navigation antennas, on the premise that the performance is not affected, the two antennas are reduced into one antenna through the power dividing circuit, and the equipment volume and the peripheral cost can be effectively reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 schematically illustrates a schematic structural diagram of a circuit for a V2X device according to an embodiment of the present disclosure;
fig. 2 schematically illustrates a schematic structural diagram of a circuit for a V2X device according to another embodiment of the present disclosure;
FIG. 3 schematically illustrates a structural schematic of a circuit for a V2X device, according to yet another embodiment of the present disclosure;
FIG. 4 schematically illustrates a schematic structural diagram of a circuit for a V2X device, according to yet another embodiment of the present disclosure;
FIG. 5 schematically illustrates a structural schematic diagram of a circuit for a V2X device, according to yet another embodiment of the present disclosure; and
fig. 6 schematically illustrates a structural schematic diagram of a circuit for a V2X device according to yet another embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Fig. 1 schematically illustrates a schematic structural diagram of a circuit for a V2X device according to an embodiment of the present disclosure.
A first exemplary embodiment of the present disclosure provides a circuit for a V2X device.
Referring to fig. 1, a circuit 100 for a V2X device provided by the embodiment of the present disclosure includes: the main control unit 110, the navigation unit 121 and the V2X unit 122 respectively connected to the main control unit 110, and the power dividing circuit 130. One end of the power dividing circuit 130 is connected to the navigation unit 121 and the V2X unit 122, respectively, and the other end of the power dividing circuit 130 is connected to the external connection terminal J1Outside of theTerminal J1For accessing the navigation antenna 150.
For example, referring to the dashed box in FIG. 1, the outer terminal J1For connection to an antenna socket 140, the antenna socket 140 being adapted to receive a navigation antenna 150. In other embodiments, other ways of accessing the navigation antenna may be used.
By arranging the power dividing circuit 130 in the navigation signal transmission paths of the navigation unit 121 and the V2X unit 122, only one navigation antenna 150 needs to be arranged, one path of navigation signal serially connected from the navigation antenna 150 is respectively subjected to power distribution through the power dividing circuit 130 and is respectively transmitted to the navigation unit 121 and the V2X unit 122, for V2X equipment requiring two navigation antennas, on the premise that the performance is not affected, the two navigation antennas are reduced into one antenna through the power dividing circuit, and the equipment volume and the peripheral cost can be effectively reduced.
Fig. 2 schematically shows a schematic structural diagram of a circuit for a V2X device according to another embodiment of the present disclosure.
According to an embodiment of the present disclosure, referring to fig. 2, the navigation antenna 150 for access is an active navigation antenna, and the circuit 100 further includes: capacitor C1And a power supply circuit 160. Capacitor C1Connected to the power dividing circuit 130 and the external terminal J1The power supply output terminal of the power supply circuit 160 is connected to the capacitor C1And the outer connection end J1In the meantime.
Because the power division circuit arranged on the navigation signal transmission path divides the radio frequency signal of the satellite (such as GNSS) into two, the navigation antenna used for access only adopts an active navigation antenna, and the power attenuation of the received radio frequency navigation signal is not too low; otherwise, the passive antenna will affect the carrier-to-noise ratio of the satellite signal obtained by the baseband demodulation of the main control unit.
Fig. 3 schematically shows a schematic structural diagram of a circuit for a V2X device according to yet another embodiment of the present disclosure.
According to an embodiment of the present disclosure, as shown with reference to fig. 3, the power supply circuit 160 includes: power supply module S1And an inductance L1The power supply module S1Via the output terminal ofThe above-mentioned inductance L1Is connected to the capacitor C1And the outer connection end J1In the meantime.
Power supply module S1For dc supply, the output voltage provided is, for example, 3V to 5V.
By providing an inductance L, as indicated by the dashed arrow in FIG. 31And a capacitor C1On the one hand from the power supply module S1The output power supply signal passes through the inductor L1Then transmitted to the main trunk circuit where the navigation signal is positioned due to the capacitor C1Has the function of isolating direct current, thereby enabling the power supply signal to pass through the external connection terminal J1The power is transmitted to the antenna socket to supply power to the navigation antenna 150, so that the damage caused by the transmission of the power supply signal to the power dividing circuit 130 is avoided; on the other hand, the navigation signal received from the navigation antenna 150 is received via the external connection terminal J1In the process of transmitting to the power dividing circuit, the power dividing circuit is based on the inductor L1The arrangement of (2) can isolate the radio frequency signal, and avoids the influence of the accessed navigation signal on the power supply path, thereby realizing that the navigation signal and the power supply signal are not influenced by each other on the whole.
Fig. 4 schematically shows a schematic structural diagram of a circuit for a V2X device according to yet another embodiment of the present disclosure.
According to an embodiment of the present disclosure, referring to fig. 4, the power dividing circuit 130 includes: a one-to-two microstrip power divider 131; and an impedance matching circuit 132 disposed on at least one of an input path and an output path of the one-to-two microstrip power divider 131.
Referring to fig. 4, the impedance matching circuit 132 is an L-C circuit, and the impedance matching circuit 132 includes a capacitor C connected in parallel2And an inductance L2Capacitors C arranged in parallel2And an inductance L2A one-to-two microstrip power divider 131 and a capacitor C connected in series1For implementing impedance matching between the input and the output of the one-to-two microstrip power divider 131.
Fig. 5 schematically illustrates a structural schematic diagram of a circuit for a V2X device according to yet another embodiment of the present disclosure.
According to an embodiment of the present disclosure, referring to FIG. 5, power is dividedThe path 130 includes: a first resistor R1A second resistor R2And a third resistor R3(ii) a A second resistor R2And a third resistor R3Is connected in parallel to the first resistor R1The first resistor R1Is connected to the outer connection end J1A second resistance R2Is connected to the navigation unit 121, a third resistor R3And the other end is connected to V2X cell 122; the navigation antenna 150 is an active navigation antenna 151 connected with a signal amplification unit 152, and a preset reference of the gain of the signal amplification unit 152 needs to be higher than the first resistor R1A second resistor R2And a third resistor R3The gain of the signal amplifying unit 152 is a target gain value obtained by increasing a desired signal gain value (e.g., 15dB to 30dB) based on a preset reference (e.g., ≧ 3 dB). The signal amplification unit is for example a Low Noise Amplifier (LNA).
In this embodiment, the insertion loss of the power dividing circuit constructed by using the resistor is large, so that it is required to ensure that a signal amplifying unit in the active navigation antenna has sufficient gain to offset the insertion loss.
It should be noted that, in the above embodiments, the hardware circuit includes the main control unit 110, the navigation unit 121 and the V2X unit 122 respectively connected to the main control unit 110, and the power dividing circuit 130 as an example, for example, in the smallest sales unit of the circuit (hardware circuit) provided in the embodiments of the present disclosure, the hardware circuit has an external connection end, and is connected to the navigation antenna through the external connection end, for example, the external connection end may be connected to an external antenna socket, and the navigation antenna is mounted to the antenna socket.
Fig. 6 schematically illustrates a structural schematic diagram of a circuit for a V2X device according to yet another embodiment of the present disclosure.
In other embodiments of the present disclosure, the circuit 100 further includes: an antenna socket 140, the antenna socket 140 and the external connection terminal J1Fixed connection or detachable connection.
According to an embodiment of the present disclosure, the antenna socket 140 is mounted with a navigation antenna 150, and the navigation antenna 150 includes: a signal transmission antenna 151 and a low noise amplifier 152a, the low noise amplifier 152a being connected between the signal transmission antenna 151 and the antenna socket 140.
A second exemplary embodiment of the present disclosure provides a V2X device. The V2X device described above includes the circuit 100 described above.
A third exemplary embodiment of the present disclosure provides a vehicle. The vehicle includes a circuit 100 as described above or a V2X device as described above. The vehicle is a conventional vehicle or an autonomous vehicle.
To sum up, the circuit for the V2X device, the V2X device, and the vehicle provided in the embodiments of the present disclosure can realize transmission of two navigation signals only by installing one antenna based on the power division circuit without affecting performance, and can effectively reduce the device size and the peripheral cost.
The various embodiments mentioned in this disclosure can be combined with each other into new embodiments. Any plurality of the units mentioned in the above embodiments may be combined into one unit, or any one of the units may be split into multiple units. Alternatively, at least part of the functionality of one or more of these units/modules may be combined with at least part of the functionality of other units/modules and implemented in a single unit. At least one of the above units may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in hardware or firmware in any other reasonable way of integrating or packaging circuits, or in a combination of software and hardware, or a combination of software and firmware.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the purpose of describing particular embodiments of the present disclosure, and is intended to enable those skilled in the art to understand or implement the technical concepts of the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A circuit for a V2X device, comprising:
a main control unit;
the navigation unit and the V2X unit are respectively connected with the main control unit; and
and one end of the power dividing circuit is respectively connected with the navigation unit and the V2X unit, the other end of the power dividing circuit is connected to an external end, and the external end is used for accessing a navigation antenna.
2. The circuit of claim 1, wherein the navigation antenna is an active navigation antenna, the circuit further comprising:
the capacitor is connected between the power dividing circuit and the external connection end;
and the power supply output end of the power supply circuit is connected between the capacitor and the external connection end.
3. The circuit of claim 2, wherein the power supply circuit comprises:
the output end of the power supply module is connected between the capacitor and the external connection end through the inductor.
4. The circuit of claim 1, wherein the power division circuit comprises:
a one-to-two microstrip power divider;
and the impedance matching circuit is arranged on at least one of an input path or an output path of the one-to-two microstrip power divider.
5. The circuit of claim 4, wherein the impedance matching circuit is an L-C circuit.
6. The circuit of claim 1, wherein the power division circuit comprises: a first resistor, a second resistor and a third resistor;
one end of the second resistor and one end of the third resistor are connected to one end of the first resistor in parallel, the other end of the first resistor is connected to the external connection end, the other end of the second resistor is connected to the navigation unit, and the other end of the third resistor is connected to the V2X unit;
the navigation antenna is an active navigation antenna connected with a signal amplification unit, the preset reference of the gain of the signal amplification unit needs to be higher than the insertion loss of the first resistor, the second resistor and the third resistor, and the gain is a target gain value obtained by increasing a required signal gain value on the basis of the preset reference.
7. The circuit of any one of claims 1-6, further comprising:
and the antenna socket is fixedly connected or detachably connected with the external connection end.
8. The circuit of claim 7, wherein the antenna socket has the navigation antenna mounted thereon, the navigation antenna comprising:
the low noise amplifier is connected between the signal transmission antenna and the antenna socket.
9. A V2X device, comprising the circuit of any one of claims 1-8.
10. A vehicle comprising the circuit of any one of claims 1-8 or the V2X device of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220722105.8U CN216850317U (en) | 2022-03-29 | 2022-03-29 | Circuit for V2X device, V2X device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220722105.8U CN216850317U (en) | 2022-03-29 | 2022-03-29 | Circuit for V2X device, V2X device and vehicle |
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| CN216850317U true CN216850317U (en) | 2022-06-28 |
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| CN202220722105.8U Active CN216850317U (en) | 2022-03-29 | 2022-03-29 | Circuit for V2X device, V2X device and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115593328A (en) * | 2022-09-07 | 2023-01-13 | 智道网联科技（北京）有限公司（Cn） | Circuit suitable for automatic driving vehicle and vehicle |
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2022
- 2022-03-29 CN CN202220722105.8U patent/CN216850317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115593328A (en) * | 2022-09-07 | 2023-01-13 | 智道网联科技（北京）有限公司（Cn） | Circuit suitable for automatic driving vehicle and vehicle |
| WO2024051159A1 (en) * | 2022-09-07 | 2024-03-14 | 智道网联科技(北京)有限公司 | Circuit applicable to autonomous vehicle, and vehicle |
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