CN112037343A - Multi-angle antenna device for road side unit - Google Patents
Multi-angle antenna device for road side unit Download PDFInfo
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- CN112037343A CN112037343A CN202010881047.9A CN202010881047A CN112037343A CN 112037343 A CN112037343 A CN 112037343A CN 202010881047 A CN202010881047 A CN 202010881047A CN 112037343 A CN112037343 A CN 112037343A
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- 238000004891 communication Methods 0.000 claims abstract description 54
- 230000000007 visual effect Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000010287 polarization Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 101000823089 Equus caballus Alpha-1-antiproteinase 1 Proteins 0.000 description 3
- 101000651211 Homo sapiens Transcription factor PU.1 Proteins 0.000 description 3
- 102100027654 Transcription factor PU.1 Human genes 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 101100048435 Caenorhabditis elegans unc-18 gene Proteins 0.000 description 1
- 101000823108 Equus caballus Alpha-1-antiproteinase 3 Proteins 0.000 description 1
- 101000941170 Homo sapiens U6 snRNA phosphodiesterase 1 Proteins 0.000 description 1
- 102100031314 U6 snRNA phosphodiesterase 1 Human genes 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/02—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Business, Economics & Management (AREA)
- Finance (AREA)
- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
The invention provides a multi-angle antenna device for a road side unit. The method comprises the following steps: the system comprises a system controller 2, a microwave communication module 3, a loop camera 4 and a plurality of groups of antennas 9-12, wherein the camera system 4 has a 360-degree shooting visual angle, and the position of a vehicle can be identified through image processing. The multiple groups of antennas 9-12 are arranged along the shooting angle of view, and the action ranges of the antennas respectively correspond to different areas in the shooting angle of view. The microwave communication module 3 is connected with the corresponding antennas 9-12 according to the position of the vehicle identified by the loop camera 4, and communicates with the vehicle-mounted electronic tag on the vehicle to acquire vehicle information.
Description
Technical Field
The present invention relates to a multi-angle antenna device for a Road Side Unit (RSU), and more particularly, to a multi-angle antenna device for a Road Side Unit (RSU).
Background
The phenomenon of disorderly parking on the street not only affects the image of the city, but also causes great obstacles for the traffic trip of the vehicle owner. When an individual vehicle passes through the high-speed toll gate, the vehicle is intentionally followed, and the automatic fee deduction for high-speed toll collection is avoided. Illegal behaviors such as counterfeiting of license plates of other people and the like also occur occasionally, and traffic safety is affected.
With the application scheme of ETC policy 'accelerating the promotion of highway electronic non-stop rapid toll collection' released by the transportation division in 2019 and the preferential policy released by various banks, the popularization rate of ETC vehicles installed in the end of 2019 reaches over 90%, and an ETC equipment vehicle-mounted electronic tag (OBU) becomes a unique electronic identification of vehicle identity.
The existing ETC type roadside parking charging device further utilizes the RSU to read vehicle information in the vehicle-mounted electronic tag after identifying the vehicle type and license plate information of a vehicle through the camera, so that the identification accuracy is improved. Because the coverage of the RSU antenna in the width direction is small, great difficulty is brought to the installation and debugging of the antenna. In addition, in the using process, the deviation of the antenna position is not easy to be found, regular detection is usually needed, and the popularization of the ETC type roadside parking charging device is influenced due to the huge maintenance workload during the use of a large amount of the ETC type roadside parking charging device.
The invention aims to provide an antenna device for a multi-angle road side unit, which is used for solving the problem that an RSU antenna is difficult to install and debug.
Disclosure of Invention
The first technical scheme of the invention is a multi-angle antenna device for a road side unit, which is characterized by comprising the following components: a vehicle signal transceiver, a camera system, a plurality of groups of antennas and an antenna adapter,
the camera system has a certain shooting visual angle, is arranged at the roadside to shoot the image of the vehicle, identifies the vehicle and the position of the vehicle through image processing,
the multiple groups of antennas are arranged along the shooting visual angle of the camera system, the action ranges of the antennas respectively correspond to different areas in the shooting visual angle,
the vehicle signal transceiver communicates with the vehicle-mounted electronic tag to acquire vehicle information,
the antenna adapter connects an antenna corresponding to the vehicle position to the vehicle signal transceiver according to the vehicle position identified by the camera system.
The second technical solution is based on the first technical solution, and the action ranges of the multiple groups of antennas in the horizontal direction are connected seamlessly or have partial overlapping.
The third technical solution is based on the second technical solution, and the camera system has a 360 ° shooting angle of view.
The fourth technical scheme is based on the third technical scheme, and the camera in the camera system is a dome camera or a gunlock camera.
The fifth technical scheme is based on the third technical scheme, the camera system identifies the vehicle type and the license plate of the vehicle through image processing, and the vehicle signal transceiver acquires the vehicle type and the license plate information of the vehicle through communication with the vehicle-mounted electronic tag.
A sixth technical solution is based on the third technical solution, and the antenna is a microwave antenna.
The seventh technical solution is based on the sixth technical solution, the antenna is a microstrip high gain array antenna or a phased array antenna, and the wave velocity scanning is realized by controlling the phase and power distribution ratio of each antenna unit of the array antenna.
The eighth technical solution is based on the seventh technical solution, and the polarization mode of the antenna is right-hand circular polarization or linear polarization.
The ninth technical proposal is based on the seventh technical proposal and comprises a system controller (2), a communication module and a safety certification module (13), wherein the communication module, the safety certification module (13), the camera system (4) and the vehicle signal transceiver are connected with the system controller (2),
the communication module comprises any one or combination of a network port communication module (5), an RS485 communication module (6), a WIFI communication module (7), a 4G/5G communication module (8) and a Bluetooth communication module (14).
The tenth technical solution is based on any one of the third to the ninth technical solutions, and includes a microwave communication module (3) composed of a controller (30), a microwave transceiver (31), a power amplifier (32), a low noise amplifier (33), a single-pole double-throw switch (34), a single-pole 4-throw switch (35), a network port transceiver (36), and a connector (37),
the controller (30), the microwave transceiver (31), the power amplifier (32), the low noise amplifier (33), the single-pole double-throw switch (34), the network port transceiver (36) and the connector (37) are used as the vehicle signal transceiver to communicate with the vehicle-mounted electronic tag to acquire vehicle information,
the single pole double throw switch (34) is connected as the antenna adapter to the antenna corresponding to the vehicle position.
Drawings
Fig. 1 is a structural explanatory diagram of a multi-angle antenna device for a roadside unit;
FIG. 2 is a diagram illustrating the structure of a power module;
fig. 3 is a diagram illustrating a structure of a microwave communication module.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the technical solutions of the present invention are further described below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a structural explanatory diagram of a multi-angle antenna device for a roadside unit. As shown in fig. 1, the multi-angle antenna device mainly comprises a power module 1, a system controller 2, a microwave communication module 3, a dome camera (camera system) 4, a network port communication module 5, an RS485 communication module 6, a WIFI communication module 7, a 4G/5G communication module 8, a bluetooth communication module 14, an antenna (front) 9, an antenna (rear) 10, an antenna (left) 11, an antenna (right) 12, a security authentication module 13, and the like.
The system controller 2 is respectively connected with the microwave communication module 3 through the LAN1, the dome camera (camera system) 4 through the LAN2, the SPI1 and the internet access communication module 5, the UART1 and the RS485 communication module 6, the USB1 and WIFI communication module 7, the USB2 and 4G/5G communication modules 8, the SPI3 and bluetooth communication module 14, and the SPI1 and the security authentication module 13.
The network port communication module 5, the RS485 communication module 6, the WIFI communication module 7, the 4G/5G communication module 8 and the Bluetooth communication module 14 are used as communication modules for sending the acquired information to an external server or receiving an instruction. The security authentication module 13 performs security management of the system controller 2.
The ball machine camera 4 is provided, for example, in a roadside parking lot, and monitors a vehicle entering the roadside parking lot. The dome camera 4 has a shooting angle of view of 360 degrees, and can monitor the situation in the roadside parking lot within 360 degrees in the horizontal direction. The dome camera 4 has an image processing function, and accurately identifies the vehicle type and the license plate information of the vehicle entering the parking area through image processing of the shot image.
The antenna (front) 9, the antenna (rear) 10, the antenna (left) 11 and the antenna (right) 12 are evenly distributed at four positions, namely, the action range of the antenna 9 corresponds to the front of the shooting visual angle, the action range of the antenna 10 corresponds to the rear of the shooting visual angle, the action range of the antenna 11 corresponds to the left of the shooting visual angle, the action range of the antenna 12 corresponds to the right of the shooting visual angle, and the action ranges of the four antennas (9-12) in the horizontal direction are seamlessly connected or partially overlapped.
In the present embodiment, the antennas 9, 10, 11, and 12 are microstrip high gain array antennas or phased array antennas, and the phase and power distribution ratio of each antenna element of the array antennas are controlled to realize the wave velocity scanning and to position the vehicle. The antenna polarization mode is preferably right-hand circular polarization, and can also be linear polarization. The form of the antenna can also be other forms of antennas, such as a horn antenna, a waveguide slot antenna and the like, as long as the four antennas can cover 360 degrees in the horizontal direction, and no blind area in horizontal microwave communication is ensured. The structure of the antenna is not limited to the above form, any antenna can communicate with an OBU on a vehicle, the action range is smaller than the shooting visual angle of the camera 4 of the dome camera, and the combined action range is applicable to the antenna corresponding to the whole shooting visual angle.
Under the control of the system controller 2, the dome camera 424 hours performs road side monitoring, and when a vehicle is shot, an image processing system in the dome camera 4 performs image processing on the image, detects the position of the vehicle, and identifies vehicle information such as the model number and the license plate number of the vehicle.
After the system controller 2 acquires the vehicle position information detected by the dome camera 4, the microwave communication module 3 is started to communicate with the OBU on the vehicle to acquire vehicle information such as vehicle license plate number and the like.
The microwave communication module 3 receives vehicle position information from the system controller 2, and communicates with an antenna corresponding to the vehicle position. Therefore, even if the coverage (action range) of the antennas (9-12) in the width (horizontal) direction is narrow, the microwave communication module 3 can accurately communicate with the OBU on the vehicle, and the problem that the vehicle information (such as the vehicle type and the license plate information) cannot be read due to the deviation of the antenna positions is avoided. That is, in the present invention, the four antennas and the dome camera 4 are fixed in advance, and there is no need to adjust positions for the respective antennas at the time of mounting, and there is no need to perform regular detection and adjustment.
The system controller 2 may compare the vehicle information from the dome camera 4 with the vehicle information from the microwave communication module 3 when transmitting the vehicle information to the server, and transmit the vehicle information to the server when the two pieces of vehicle information match each other, so as to improve the accuracy of the vehicle information.
Fig. 2 is a diagram illustrating the structure of the power module. The power module 1 is used for providing different required voltages for each module, the input voltage of the power module is alternating current 220V, direct current voltage 12V is output after passing through the switching power module 20, direct current voltage 5V is output by the output end after the voltage 12V passes through the DC/DC power chip and the filter circuit 21, different voltages such as 3.3V, 3V and 1.8V are output after the voltage 5V passes through the LDO and the filter circuit 22 with different output voltages, and working voltage is provided for each module.
Fig. 3 is a diagram illustrating a structure of a microwave communication module. As shown in fig. 3, the microwave communication module 3 is composed of a controller 30, a microwave transceiver 31, a Power Amplifier (PA)32, a Low Noise Amplifier (LNA)33, a single-pole double-throw connector (SPDT)34, a single-pole 4-throw connector (SP4T)35, a network port transceiver 36, and a connector 37. Controller 30 is connected to microwave transceiver 31 via SPI1 and to portal transceiver 36 via SPI 2. The microwave transceiver 31 realizes modulation and demodulation of 5.8GHz microwave signals. A Power Amplifier (PA)32 performs amplification of the transmit signal to a certain power and then radiates out to the antenna. A Low Noise Amplifier (LNA)33 enables further amplification of the weak signal received by the antenna.
The single-pole double-throw connector 34 realizes the switching of receiving and transmitting of signals. The single-pole 4-throw connector 35 realizes the functions of selecting and connecting the antenna 9, the antenna 10, the antenna 11 and the antenna 12, that is, selecting the corresponding antenna for the connection function according to the vehicle position information.
For example, when the dome camera 4 recognizes information of a preceding vehicle, the single-pole 4 throw 35 is connected to the antenna 9 in front, and the microwave transceiver 31 communicates with an on-board electronic tag (OBU) in the preceding vehicle via the antenna 9 in front to acquire vehicle information or perform parking charge processing.
The controller 30, the microwave transceiver 31, the power amplifier 32, the low noise amplifier 33, the single-pole double-throw switch connector 34, the network port transceiver 36 and the connector 37 constitute a vehicle signal transceiver for communicating with the vehicle-mounted electronic tag to acquire vehicle information in the claims.
The single-pole 4-throw connector 35 constitutes an antenna adapter for connecting an antenna corresponding to a vehicle position in the claims.
In the present embodiment, the position of the vehicle, the vehicle model number, and the license plate information are detected by using the dome camera having a shooting angle of 360 °, but shooting by using the gun camera is also possible.
The number of antennas is not limited to four groups, and may be arbitrarily selected according to the coverage of the antennas.
The camera system is not limited to a dome camera or a gun camera having a shooting angle of 360 °, and various other types of camera mechanisms may be used as long as the camera system has a wide shooting angle and can cover a range to be detected.
The technical scheme of the invention brings beneficial effects
The multi-angle antenna device not only has a video identification function and can accurately identify various vehicle types and license plates, but also has a microwave communication function, and can read vehicle information in an in-vehicle electronic tag (OBU) through microwaves. The ball machine camera 4 detects the vehicle, after discerning the vehicle position, microwave communication module 3 can the antenna of automatic selection corresponding direction, then carries out microwave communication again, and the microwave antenna of every direction all has wave speed scanning function, can communicate with the OBU on the vehicle of different distances to can fix a position the vehicle.
Compared with the traditional single-antenna roadside device, the multi-angle antenna device has a 360-degree visual field, so that the trouble of manually adjusting the installation angle of the antenna is avoided during installation. And the communication can be carried out by selecting various communication modes such as internet access, RS485, WIFI, 4G/5G, Bluetooth and the like between the external server, wherein the communication modes of WIFI, 4G/5G and Bluetooth do not need wiring, and the installation is convenient. And maintenance work such as detection is not required to be carried out regularly, and the use cost is reduced.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily made by those skilled in the art within the technical scope of the present invention described above should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A multi-angle antenna device for a roadside unit, characterized by comprising: a vehicle signal transceiver, a camera system, a plurality of groups of antennas and an antenna adapter,
the camera system has a certain shooting visual angle, is arranged at the roadside to shoot the image of the vehicle, identifies the vehicle and the position of the vehicle through image processing,
the multiple groups of antennas are arranged along the shooting visual angle of the camera system, the action ranges of the antennas respectively correspond to different areas in the shooting visual angle,
the vehicle signal transceiver communicates with the vehicle-mounted electronic tag to acquire vehicle information,
the antenna adapter connects an antenna corresponding to the vehicle position to the vehicle signal transceiver according to the vehicle position identified by the camera system.
2. The multi-angle antenna device for the road side unit according to claim 1, wherein the action ranges of the multiple groups of antennas in the horizontal direction are connected seamlessly or partially overlapped.
3. The multi-angle antenna device for a roadside unit according to claim 2, wherein: the camera system has a 360-degree shooting visual angle.
4. The multi-angle antenna device for a roadside unit according to claim 3, wherein: the camera in the camera system is a camera of a ball machine or a camera of a gun camera.
5. The multi-angle antenna device for a roadside unit according to claim 3, wherein: the camera system identifies the type and the license plate of the vehicle through image processing, and the vehicle signal transceiver acquires the type and the license plate information of the vehicle through communication with the vehicle-mounted electronic tag.
6. The multi-angle antenna device for a roadside unit according to claim 3, wherein: the antenna is a microwave antenna.
7. The multi-angle antenna device for a roadside unit according to claim 6, wherein: the antenna is a microstrip high-gain array antenna or a phased array antenna, and wave velocity scanning is realized by controlling the phase and power distribution ratio of each antenna unit of the array antenna.
8. The multi-angle antenna device for a roadside unit according to claim 7, wherein: the polarization mode of the antenna is right-hand circular polarization or linear polarization.
9. The multi-angle antenna device for a roadside unit according to claim 7, further comprising: a system controller (2), a communication module and a safety certification module (13), wherein the communication module, the safety certification module (13), the camera system (4) and the vehicle signal transceiver are connected with the system controller (2),
the communication module comprises any one or combination of a network port communication module (5), an RS485 communication module (6), a WIFI communication module (7), a 4G/5G communication module (8) and a Bluetooth communication module (14).
10. The multi-angle antenna device for a roadside unit according to any one of claims 3 to 9, wherein: comprises a microwave communication module (3) which consists of a controller (30), a microwave transceiver (31), a power amplifier (32), a low noise amplifier (33), a single-pole double-throw switch (34), a single-pole 4-throw switch (35), a network port transceiver (36) and a connector (37),
the controller (30), the microwave transceiver (31), the power amplifier (32), the low noise amplifier (33), the single-pole double-throw switch (34), the network port transceiver (36) and the connector (37) are used as the vehicle signal transceiver to communicate with the vehicle-mounted electronic tag to acquire vehicle information,
the single pole double throw switch (34) is connected as the antenna adapter to the antenna corresponding to the vehicle position.
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| CN202010881047.9A CN112037343A (en) | 2020-08-27 | 2020-08-27 | Multi-angle antenna device for road side unit |
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| CN202010881047.9A CN112037343A (en) | 2020-08-27 | 2020-08-27 | Multi-angle antenna device for road side unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114627405A (en) * | 2022-02-14 | 2022-06-14 | 苏州大学 | Vehicle integrated vision identification method |
| CN115954648A (en) * | 2022-12-29 | 2023-04-11 | 北京万集科技股份有限公司 | RSU antenna and electronic toll collection system |
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| CN212460618U (en) * | 2020-08-27 | 2021-02-02 | 北京握奇数据股份有限公司 | Multi-angle antenna device for road side unit |
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2020
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| CN115954648A (en) * | 2022-12-29 | 2023-04-11 | 北京万集科技股份有限公司 | RSU antenna and electronic toll collection system |
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