CN112565570A - Passenger vehicle overload real-time monitoring system and method based on V2X and V2X vehicle-mounted unit - Google Patents
Passenger vehicle overload real-time monitoring system and method based on V2X and V2X vehicle-mounted unit Download PDFInfo
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- CN112565570A CN112565570A CN202011383491.4A CN202011383491A CN112565570A CN 112565570 A CN112565570 A CN 112565570A CN 202011383491 A CN202011383491 A CN 202011383491A CN 112565570 A CN112565570 A CN 112565570A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
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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
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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Abstract
The invention provides a passenger vehicle overload real-time monitoring system and method based on V2X and a V2X vehicle-mounted unit, wherein the system comprises a camera, a passenger vehicle central control platform, a V2X vehicle-mounted unit, a V2X road side base station and a passenger vehicle rear end platform, wherein the camera is used for acquiring the number of passengers getting on and off the passenger vehicle and the number of passengers in the passenger vehicle and uploading the number of passengers to the passenger vehicle central control platform; the passenger car central control platform judges whether the number of people in the passenger car is overloaded or not, and uploads a result to the V2X vehicle-mounted unit and informs a driver; the V2X vehicle-mounted unit acquires vehicle information and information of the number of people in the vehicle and uploads the information to the V2X road side base station; the V2X roadside base station uploads the acquired vehicle information and the information of the number of people in the passenger car to the passenger transport rear-end platform, and the passenger transport vehicle overload real-time monitoring system and method based on V2X and the V2X vehicle-mounted unit can monitor whether the number of people in the passenger car is overloaded in real time, so that traffic accidents caused by overload can be effectively prevented; the workload of a traffic management department is reduced; meanwhile, comfortable experience is brought to passengers.
Description
Technical Field
The invention relates to a passenger vehicle overload real-time monitoring system and a method, in particular to a passenger vehicle overload real-time monitoring system and a passenger vehicle overload real-time monitoring method based on V2X and a V2X vehicle-mounted unit.
Background
ETC: (Electronic Toll Collection) Electronic Toll Collection (ETC) system is the most advanced way and bridge charging mode in the world at present, deducts the amount of money on a user card or carries out background settlement processing with a bank by using a computer networking technology through the special short-range microwave communication between a vehicle-mounted Electronic tag arranged on a vehicle windshield and a microwave antenna on an ETC lane of a Toll station, the ETC is an advanced electronic toll collection technology, is mainly applied to ramp entrances and exits and main line sign stations at present, and is an ETC application mode under a closed highway toll scene.
V2X (Vehicle to assessing) is based on technologies such as wireless communication, sensing detection and the like to acquire Vehicle and road information, realize real-time information interaction of vehicles, roads, people and networks, perform Vehicle safety control and road cooperative management, guarantee traffic safety and improve traffic efficiency. The V2X includes Vehicle networking communication technologies such as V2V (Vehicle to Vehicle), V2I (Vehicle to Infrastructure), V2P (Vehicle to Pedestrian), and V2N (Vehicle to Network), which are key technologies in future intelligent transportation systems.
Passenger transport backend platform: through the background management website, passenger car overload management can be effectively carried out and information can be consulted by a browser, the background of the website needs account number and password login verification, and after login is successful, the website enters a management interface of the background of the website to carry out a related series of operations.
A camera: the camera has the basic functions of video shooting/transmission, static image capture and the like, and processes and converts images into digital signals which can be identified by a computer by a photosensitive component and a control component in the camera after the images are collected by a lens, and then the digital signals are input into the computer by a parallel port or USB connection and then are restored by software.
The automobile central control platform: the central control of the automobile is the place for controlling comfortable entertainment devices such as an automobile air conditioner, a sound and the like, the central control of the automobile comprises a central control door lock system, a driver can control the opening and closing of the door of the whole automobile and a glass lifting system through the central control of the automobile, the central control door lock system mainly has three functions of central control, speed control and independent control, the driver can control the opening and closing of all door locks, meanwhile, when the driving speed reaches a certain speed, the door is automatically locked, other doors are provided with independent switches, the door of the driver can be independently controlled, the central control platform of the central control of the automobile is provided with various vehicle controllers such as a sound control panel and the like.
At present, the overload supervision of passenger vehicles is mainly carried out by a transportation management department when passenger vehicles exit from a station at a passenger station, and the detection methods can not monitor the number of passengers on the vehicles in real time and can not stop the behaviors of getting on and off the passengers midway; by installing a camera for monitoring, the method cannot monitor the video images in real time because no network is available for uploading.
In order to solve the technical defects of the prior art, a passenger vehicle overload real-time monitoring system and method based on V2X and a V2X vehicle-mounted unit are provided, so that traffic accidents caused by overload can be effectively reduced, passenger overload is struck, and driving safety is improved.
Disclosure of Invention
Based on the defects of the prior art, the invention provides a passenger vehicle overload real-time monitoring system based on V2X, which comprises a camera, a passenger vehicle central control platform, a V2X vehicle-mounted unit, a V2X road side base station and a passenger vehicle rear end platform, wherein the camera, the passenger vehicle central control platform, the V2X vehicle-mounted unit, the V2X road side base station and the passenger vehicle rear end platform are sequentially connected;
the camera is used for acquiring the number of passengers getting on the bus, the number of passengers getting off the bus and the number of the passengers left in the bus and uploading the number to the bus central control platform;
the passenger car central control platform judges whether the number of people in the passenger car is overloaded or not, and uploads a result to the V2X vehicle-mounted unit and informs a driver;
the V2X vehicle-mounted unit acquires vehicle information and information of the number of people in the vehicle and uploads the information to the V2X road side base station;
and the V2X road side base station uploads the acquired vehicle information and the number information in the vehicle to the passenger transport rear-end platform.
As an improvement of the passenger vehicle overload real-time monitoring system based on V2X, the cameras of the passenger vehicle overload real-time monitoring system based on V2X comprise two or more cameras which are respectively positioned at the front door, the rear door and the interior of a passenger vehicle.
As an improvement of the V2X-based passenger vehicle overload real-time monitoring system, the V2X-based passenger vehicle overload real-time monitoring system is an embedded camera.
As an improvement of the V2X-based passenger vehicle overload real-time monitoring system, the V2X vehicle-mounted unit of the V2X-based passenger vehicle overload real-time monitoring system uploads information to the V2X road-side base station through V2X communication.
As an improvement of the passenger vehicle overload real-time monitoring system based on V2X, the V2X vehicle-mounted unit of the passenger vehicle overload real-time monitoring system based on V2X is connected with the passenger vehicle central control platform through a CAN bus.
As an improvement of the V2X-based passenger vehicle overload real-time monitoring system, the V2X-side base station of the V2X-based passenger vehicle overload real-time monitoring system is communicated with the passenger rear-end platform through a wireless network.
Based on the defects of the prior art, the invention provides a passenger vehicle overload real-time monitoring method based on V2X, and the method of the passenger vehicle overload real-time monitoring system based on V2X specifically comprises the following steps:
the camera processes video image information of the number of passengers getting on the bus, the number of passengers getting off the bus and the number of the remaining passengers in the bus, and counts the number of passengers and uploads the number of the passengers to the bus central control platform;
the passenger car central control platform judges whether the number of people on the passenger car is overloaded or not through the information acquired from the camera, and if the passenger car is overloaded, the passenger car central control platform can remind a driver and perform information interaction with the V2X vehicle-mounted unit;
after acquiring the overload information of the passenger car, the V2X vehicle-mounted unit uploads the overload information of the passenger car to the V2X road-side base station through V2X communication;
and the V2X road side base station transmits the overload information to the passenger transport rear end platform through a network, so that the condition of carrying passengers of the passenger transport vehicle is monitored in real time.
Based on the defects of the prior art, the V2X vehicle-mounted unit is arranged on a passenger vehicle and comprises an internal module and an external antenna, wherein the internal module is connected with the external antenna through a coaxial cable, the internal module comprises a processor, an ETC module, a positioning module, a power management module, a network module, a CAN module, an encryption module, an Ethernet module, a V2X module, a WIFI module, a display interface and a storage module, and the ETC module, the positioning module, the power management module, the network module, the CAN module, the encryption module, the Ethernet module, the V2X module, the WIFI module, the display interface and the storage module are connected with the processor.
As an improvement of the V2X vehicle-mounted unit, the positioning module of the V2X vehicle-mounted unit comprises a Beidou/GPS positioning structure, and the ETC module and the Beidou/GPS positioning structure are connected with the processor through serial ports.
As an improvement of the vehicle-mounted unit V2X, the external antenna of the vehicle-mounted unit V2X comprises a GNSS antenna, a WLAN antenna, a V2X antenna, an ETC antenna and a 4G/5G antenna.
Compared with the prior art, the passenger vehicle overload real-time monitoring system and method based on V2X and the V2X vehicle-mounted unit have the following beneficial effects: the passenger car central control platform processes the information of the number of people in the passenger car and the video image information, judges whether the number of people in the passenger car is overloaded or not, and can observe whether a driver is tired or not at the same time, thereby reducing the occurrence of traffic accidents; the passenger car central control platform transmits overload information to the V2X vehicle-mounted unit, and can remind a driver of the overload state of a vehicle through voice to enable the driver to perform corresponding processing, so that the overload of the passenger car is effectively prevented, and traffic accidents caused by the overload are reduced; the trouble of setting a card to check overload is reduced, and the workload of a traffic management department is reduced; meanwhile, comfortable experience is brought to passengers.
Drawings
Fig. 1 is a schematic view of the system and method for monitoring overload of passenger vehicles based on V2X and the installation of the camera on the passenger vehicle of the preferred embodiment of V2X on-board unit of the invention.
Fig. 2 is a flow chart of the V2X-based overload real-time monitoring system for passenger vehicles according to the preferred embodiments of V2X-based overload real-time monitoring system for passenger vehicles, method and V2X on-board unit of the present invention.
Fig. 3 is a block diagram of the V2X-based passenger vehicle overload real-time monitoring system and method based on V2X and the V2X on-board unit according to the preferred embodiment of the invention.
FIG. 4 is a block diagram of the V2X on-board unit of the preferred embodiment of the passenger vehicle overload real-time monitoring system and method based on V2X and the V2X on-board unit of the invention.
Detailed Description
The invention relates to a passenger vehicle overload real-time monitoring system and method based on V2X and a V2X vehicle-mounted unit, which are mainly suitable for monitoring whether passenger vehicles are overloaded or not.
With reference to fig. 1, 2, 3 and 4, the V2X-based passenger vehicle overload real-time monitoring system, method and V2X on-board unit of the present invention will be described in detail.
As shown in fig. 3, the passenger vehicle overload real-time monitoring system based on V2X in this embodiment includes a camera, a passenger vehicle central control platform, a V2X onboard unit, a V2X roadside base station, and a passenger vehicle rear end platform, where the camera, the passenger vehicle central control platform, the V2X onboard unit, the V2X roadside base station, and the passenger vehicle rear end platform are connected in sequence;
the system comprises a camera, a central control platform, a front door, a rear door, a left door, a right door, a left door, a right door, a left door, a;
in other embodiments, two embedded cameras are included and are respectively positioned at the front door of the passenger car and in the passenger car.
The passenger car central control platform judges whether the number of people in the passenger car is overloaded or not, uploads the result to the V2X vehicle-mounted unit and informs a driver, the passenger car central control platform judges whether the passenger car is overloaded or not through the number information obtained from the camera, and if the passenger car central control platform is overloaded, the voice broadcast informs the driver that the passenger car is overloaded and requires timely processing.
The V2X vehicle-mounted unit acquires vehicle information and information of the number of people in the vehicle and uploads the information to the V2X road side base station, the V2X vehicle-mounted unit is connected with the passenger car central control platform through a CAN bus, and the V2X vehicle-mounted unit CAN acquire the information of the passenger car, such as the vehicle information, the running speed, the number of people in the vehicle, illegal parking, fatigue driving of a driver and the like, and uploads the information to the V2X road side base station, so that various information of the vehicle CAN be monitored in real time;
the V2X road side base station uploads the acquired vehicle information and the number information in the vehicle to the passenger transport rear end platform, the V2X vehicle-mounted unit uploads the overload information of the passenger vehicle to the V2X road side base station through V2X communication, the V2X road side base station transmits the overload information to the passenger transport rear end platform through a network, meanwhile, the V2X road side base station can also collect information of surrounding facilities, roads, weather, vehicles, pedestrians and the like, and sends early warning information to the V2X vehicle-mounted unit in a broadcasting mode, and the V2X vehicle-mounted unit enables a driver to know the surrounding information in advance through voice broadcasting, so that protection preparation is made in advance, and the driving safety is greatly improved.
The passenger transport rear-end platform can monitor information such as vehicle overload and fatigue driving of a driver, so that the passenger transport rear-end platform can monitor abnormal information of the vehicle in real time, and the later-stage unified management of the passenger transport vehicle is facilitated.
In this embodiment, the method for monitoring overload of a passenger vehicle in real time based on V2X includes the following steps:
the camera processes video image information of the number of passengers getting on the bus, the number of passengers getting off the bus and the number of the remaining passengers in the bus, and uploads the counted number of passengers to the bus central control platform;
the passenger car central control platform judges whether the number of people on the passenger car is overloaded or not through the information acquired from the camera, if the passenger car is overloaded, the passenger car central control platform can remind a driver and carry out information interaction with the V2X vehicle-mounted unit, and if the passenger car is not overloaded, the vehicle runs normally;
after acquiring the overload information of the passenger car, the V2X vehicle-mounted unit uploads the overload information of the passenger car to the V2X road-side base station through V2X communication;
and the V2X road side base station transmits the overload information to the passenger transport rear end platform through a network, so that the condition of carrying passengers of the passenger transport vehicle is monitored in real time.
In this embodiment, the V2X on-board unit of the invention includes an internal module and an external antenna, the internal module is connected to the external antenna through a coaxial cable, the internal module includes a processor, an ETC module, a positioning module, a power management module, a network module, a CAN module, an encryption module, an ethernet module, a V2X module, a WIFI module, a display interface, and a storage module, the ETC module, the positioning module, the power management module, the network module, the CAN module, the encryption module, the ethernet module, the V2X module, the WIFI module, the display interface, and the storage module are connected to the processor, the ETC module is automatically issued through the internet via a wireless network, bound vehicle information is written into the ETC module in an encrypted manner, when passing through a highway toll station, the ETC and the RSU antenna carry out information interaction, carry out information authentication and fee deduction and quickly pass through a toll station; the ETC module is integrated into the V2X vehicle-mounted unit, and can also work in coordination, so that the cost is reduced, and the installation space of vehicle-mounted equipment is saved.
In this embodiment, the positioning module of the V2X vehicle-mounted unit of the invention includes a big dipper/GPS positioning structure, the ETC module and the big dipper/GPS positioning structure are connected with the processor through a serial port, the ETC module mainly consists of an OBU, the OBU interacts with RSU antenna information to perform information authentication and fee deduction, and the information passes through a toll station quickly; the positioning module is used for carrying out centimeter-level precision positioning on the vehicle; the ETC module can acquire the positional information of orientation module output uploads vehicle positional information through the DSRC communication at ETC transaction in-process and gives the toll station system, is favorable to the toll station system to the detection and the judgement of following car interference, adjacent lane interference to can support big dipper free flow charge.
In this embodiment, the external antenna of the V2X vehicle-mounted unit of the invention includes a GNSS antenna, a WLAN antenna, a V2X antenna, an ETC antenna and a 4G/5G antenna, the GNSS antenna is connected with the internal module through a GNSS connection port, and the GNSS antenna is installed on the top of the vehicle to enhance the signal of the positioning antenna; the WLAN antenna is connected with the built-in module through a WLAN connecting port, is arranged outside the equipment and is used for enhancing signals of the WLAN antenna; the 4G/5G antenna is connected with the built-in module through a 4G/5G connector, is installed on the top of an automobile and is used for enhancing signals of the 4G/5G antenna, and the V2X antenna is connected with the built-in module through a V2X interface, is installed on the top of the automobile and is used for enhancing signals of the V2X antenna; the ETC antenna pass through the ANT interface with built-in module connects, installs in car top or front windshield department, can effectively receive RSU's 5.8G signal, the ETC antenna is 5.8G communication antenna.
In this embodiment, the network module of the V2X vehicle-mounted unit of the invention is connected with the processor through a serial port, and the network module mainly comprises a 4G/5G module and uploads information to the cloud platform through a network; the Ethernet module is connected with the processor through an RGMII interface, can communicate with a server through an Internet network, and can also be used as a program debugging interface in the early development period; the WIFI module is connected with the processor through an SDIO interface and is used for being connected with a tablet personal computer or other display instruments through WIFI and displaying information such as sent or received video images and the like; the display interface is connected with the processor through an HDMI interface and is used for being connected with other display instruments and displaying information such as transmitted or received video images and the like; the CAN module is connected with the processor through a CAN bus and used for acquiring information of the control platform in the passenger car; the encryption module is connected with the processor through the SPI, consists of CA chips and sends and receives information in an encryption mode to prevent the information from being modified or stolen by people; the storage module is connected with the processor through the SPI and used for storing data information; the V2X module is connected with the processor through PCIE and is mainly used for connection and communication between the passenger car and external information; the power management unit provides corresponding voltage required by work for each module, and stable work of each module is ensured.
Compared with the prior art, the passenger vehicle overload real-time monitoring system based on V2X has the following beneficial effects: the passenger car central control platform processes the information of the number of people in the passenger car and the video image information, judges whether the number of people in the passenger car is overloaded or not, and can observe whether a driver is tired or not at the same time, thereby reducing the occurrence of traffic accidents; the passenger car central control platform transmits overload information to the V2X vehicle-mounted unit, and the passenger car central control can remind a driver of the fact that the vehicle is in an overload state through voice and enable the driver to perform corresponding processing, so that overload of the passenger car is effectively prevented, and traffic accidents caused by overload are reduced; the trouble of setting a card to check overload is reduced, and the workload of a traffic management department is reduced; meanwhile, comfortable experience is brought to passengers.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A passenger vehicle overload real-time monitoring system based on V2X is characterized by comprising a camera, a passenger vehicle central control platform, a V2X vehicle-mounted unit, a V2X road side base station and a passenger vehicle rear end platform, wherein the camera, the passenger vehicle central control platform, the V2X vehicle-mounted unit, the V2X road side base station and the passenger vehicle rear end platform are sequentially connected;
the camera is used for acquiring the number of passengers getting on the bus, the number of passengers getting off the bus and the number of the passengers left in the bus and uploading the number to the bus central control platform;
the passenger car central control platform judges whether the number of people in the passenger car is overloaded or not, and uploads a result to the V2X vehicle-mounted unit and informs a driver;
the V2X vehicle-mounted unit acquires vehicle information and information of the number of people in the vehicle and uploads the information to the V2X road side base station;
and the V2X road side base station uploads the acquired vehicle information and the number information in the vehicle to the passenger transport rear-end platform.
2. The V2X-based passenger vehicle overload real-time monitoring system according to claim 1, wherein the cameras comprise two or more cameras, located at the front door, the rear door and the inside of the passenger vehicle.
3. The V2X-based passenger vehicle overload real-time monitoring system according to claim 2, wherein the camera is an embedded camera.
4. The V2X-based passenger vehicle overload real-time monitoring system according to claim 1, wherein the V2X on-board unit uploads vehicle information to the V2X road-side base station via V2X communication.
5. The V2X-based passenger vehicle overload real-time monitoring system according to claim 1, wherein the V2X on-board unit is connected to the passenger vehicle central control platform through a CAN bus.
6. The V2X-based passenger vehicle overload real-time monitoring system according to claim 1, wherein the V2X road-side base station communicates with the passenger rear-end platform via a wireless network.
7. The method for real-time monitoring of the overload of the passenger vehicle based on V2X according to any one of claims 1-6, wherein the concrete steps include:
the camera processes video image information of the number of passengers getting on the bus, the number of passengers getting off the bus and the number of the remaining passengers in the bus, and counts the number of passengers and uploads the number of the passengers to the bus central control platform;
the passenger car central control platform judges whether the number of people on the passenger car is overloaded or not through the information acquired from the camera, and if the passenger car is overloaded, the passenger car central control platform can remind a driver and perform information interaction with the V2X vehicle-mounted unit;
after acquiring the overload information of the passenger car, the V2X vehicle-mounted unit uploads the overload information of the passenger car to the V2X road-side base station through V2X communication;
and the V2X road side base station transmits the overload information to the passenger transport rear end platform through a network, so that the condition of carrying passengers of the passenger transport vehicle is monitored in real time.
8. The utility model provides a V2X vehicle-mounted unit, its characterized in that installs on passenger vehicle, includes built-in module and external antenna, built-in module with external antenna passes through coaxial cable and connects, built-in module includes treater, ETC module, orientation module, power management module, network module, CAN module, encryption module, ethernet module, V2X module, WIFI module, display interface and storage module, the ETC module the orientation module the power management module the network module the CAN module the encryption module the ethernet module the V2X module the WIFI module the display interface with storage module with the treater is connected.
9. The V2X on-board unit according to claim 8, wherein the positioning module includes a beidou/GPS positioning structure, the ETC module and the beidou/GPS positioning structure being connected to the processor via a serial port.
10. The V2X on-board unit according to claim 8, wherein the external antenna includes a GNSS antenna, a WLAN antenna, a V2X antenna, an ETC antenna, and a 4G/5G antenna.
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Cited By (1)
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| CN117496711A (en) * | 2023-11-14 | 2024-02-02 | 南京智慧交通信息股份有限公司 | 5G-based man-vehicle road integrated intelligent traffic system and method |
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| CN109584562A (en) * | 2018-12-21 | 2019-04-05 | 深圳市金溢科技股份有限公司 | Passenger stock overload method for real-time monitoring, terminal and system based on V2X |
| CN110738743A (en) * | 2019-09-20 | 2020-01-31 | 深圳成谷科技有限公司 | Vehicle-mounted terminal and dual-mode antenna for vehicle-mounted terminal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117496711A (en) * | 2023-11-14 | 2024-02-02 | 南京智慧交通信息股份有限公司 | 5G-based man-vehicle road integrated intelligent traffic system and method |
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