CN114743390B - Variable information board capable of interacting with unmanned vehicle information and implementation method - Google Patents
Variable information board capable of interacting with unmanned vehicle information and implementation method Download PDFInfo
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- CN114743390B CN114743390B CN202210281510.5A CN202210281510A CN114743390B CN 114743390 B CN114743390 B CN 114743390B CN 202210281510 A CN202210281510 A CN 202210281510A CN 114743390 B CN114743390 B CN 114743390B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/091—Traffic information broadcasting
- G08G1/094—Hardware aspects; Signal processing or signal properties, e.g. frequency bands
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/615—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096725—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information generates an automatic action on the vehicle control
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/502—LED transmitters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Atmospheric Sciences (AREA)
- Multimedia (AREA)
- Traffic Control Systems (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention provides a variable information board capable of interacting with unmanned vehicle information and an implementation method thereof. The system comprises a road information receiver, a signal controller, a visual information display device and an ultraviolet communication device, and is characterized in that the matched ultraviolet information receiver is installed on an unmanned vehicle. The variable information board displays the received road information through the visual information display device and broadcasts the received road information through the ultraviolet communication array, and the unmanned vehicle can read the panel information through the visual sensor and also can receive the ultraviolet signal, so that enough information can be obtained to enable the driving computer to make better judgment. Compared with the prior facilities, the variable information board is more intelligent, and has wide communication range and strong environment adaptability due to the use of the ultraviolet communication array.
Description
Technical Field
The invention belongs to the technical field of traffic equipment, and particularly relates to a variable information board capable of interacting with unmanned vehicle information and an implementation method.
Background
Along with the continuous increase of the mileage of expressways and the maintenance quantity of motor vehicles in China, the road conditions of the expressways are more and more complex, so that the traffic safety of the expressways is ensured, the information early warning is timely carried out on drivers, and the rapid and effective traffic induction is carried out on the vehicles so as to avoid accidents, thereby being one of the key points of expressway management work. At present, the traffic guidance modes of the expressway mainly comprise a variable information board, broadcast signals, mobile navigation and the like.
The variable information board is also called as variable information sign, which is a road traffic sign controlled by remote control device to display the driving environment on the road in front in real time. The traditional variable information board is usually an LED indication board, is controlled by a traffic management department, displays the related road conditions of the corresponding road sections, and is used for reminding a driver to take corresponding measures in time. With the advent of unmanned technology, there may be unmanned vehicles running on highways in the near future. At present, an unmanned vehicle generally uses built-in sensors to sense surrounding road conditions, and then uses a related algorithm to make judgment and decision by a built-in computer. Usually, the sensors use technologies such as machine vision and the like to identify pedestrians, vehicles, road signs and the like to acquire related information, and can also acquire surrounding road condition information in real time through navigation systems such as GPS and the like. However, the positioning accuracy of the current GPS is only 3 meters, and the current navigation system has a certain delay, so that the unmanned vehicle cannot utilize the information in time when making a decision. Although the unmanned vehicle can timely read the information on the variable information board through the visual sensor, the system cannot work normally if severe weather conditions such as rainy days, foggy days and the like are met. On the one hand, the above reasons easily cause potential safety hazards in the running of the unmanned vehicle, and on the other hand, the road passing efficiency is also easily reduced.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of providing a variable information board capable of interacting with unmanned vehicle information and an implementation method thereof aiming at the defects of the prior art.
In order to solve the technical problems, a first aspect discloses a variable information board capable of interacting with information of an unmanned vehicle, which comprises a road information receiver, a signal controller, a visual information display device and an ultraviolet communication device, wherein the unmanned vehicle is provided with a matched ultraviolet information receiver;
the road information receiver is used for receiving traffic information sent by a traffic management department and sending the traffic information to the signal controller;
the signal controller is used for receiving and processing the traffic information and controlling the visual information display device and the ultraviolet communication device;
the visual information display device is used for displaying literal symbol information according to the control of the signal controller;
the ultraviolet communication device is used for sending an ultraviolet signal to the ultraviolet information receiver according to the control of the signal controller, wherein the ultraviolet signal comprises current road condition information;
the ultraviolet information receiver is used for receiving ultraviolet signals sent by the ultraviolet communication device and realizing information interaction.
Further, the ultraviolet communication device comprises a first ultraviolet communication structure and a second ultraviolet communication structure, wherein the first ultraviolet communication structure and the second ultraviolet communication structure are connected with the signal controller through buses, the first ultraviolet communication structure comprises a first panel and a first ultraviolet communication array arranged on the first panel, and the second ultraviolet communication structure comprises a second panel and a second ultraviolet communication array arranged on the second panel; the current road condition information comprises a safe driving prompt, current position and weather environment conditions, front lane accident information and road section congestion conditions.
Further, the first ultraviolet communication array and the second ultraviolet communication array each comprise more than two basic sending units, and the more than two basic sending units are orderly arranged to form the communication array.
Further, the basic transmitting unit is a solar blind ultraviolet LED, and solar blind ultraviolet light with the wavelength of 200nm to 280nm is selected between the basic transmitting unit and the ultraviolet information receiver for wireless communication.
Further, the visual information display device is an LED display screen and is positioned on one surface facing the coming vehicle direction.
Further, the first ultraviolet communication structure is nested within the visual display device.
Further, the road information receiver is connected with the information summarizing server of the traffic management department through an optical cable, and timely acquires traffic information including road information and related indication information of the traffic management department.
Further, the signal controller processes the traffic information, and controls the visual information display device and the ultraviolet communication device to include:
classifying the traffic information aiming at a visual information display device and an ultraviolet communication device to obtain visual information and ultraviolet communication information;
decoding the visual information to obtain decoded visual information, and controlling a visual information display device to display the decoded visual information;
and modulating and amplifying the ultraviolet communication information to obtain an ultraviolet signal, and controlling the ultraviolet communication device to drive and circularly send the ultraviolet signal.
Further, the ultraviolet information receiver comprises an ultraviolet detector, an amplifier, a demodulator and a decoder, wherein the ultraviolet detector is used for detecting an ultraviolet signal sent by the ultraviolet communication device, the amplifier is used for amplifying the received ultraviolet signal, the demodulator is used for extracting binary information modulated in the ultraviolet signal, and the decoder decodes and converts the binary information into generally identifiable ultraviolet communication information.
The second aspect discloses a method for implementing a variable information board capable of interacting with information of an unmanned vehicle, using the variable information board capable of interacting with information of an unmanned vehicle, comprising:
the road information receiver receives traffic information from a traffic management department in real time and transmits the traffic information to the signal controller;
the signal controller receives traffic information, classifies the traffic information aiming at the visual information display device and the ultraviolet communication device, and obtains visual information and ultraviolet communication information;
decoding the visual information to obtain decoded visual information; directly displaying the decoded visual information on a visual information display device;
modulating and amplifying the ultraviolet communication information to obtain an ultraviolet signal; the device is driven by an ultraviolet communication device to circularly emit ultraviolet signals;
when the unmanned vehicle drives through the variable information board, the ultraviolet information receiver captures the ultraviolet signals, and the broadcast ultraviolet communication information is obtained through amplification, demodulation and decoding, so that information interaction is realized.
The beneficial effects are that:
compared with a variable information board only provided with a visual information display device, the variable information board capable of interacting with information of an unmanned vehicle can actively send information to a driving vehicle, so that the vehicle can scan information through a visual sensor and can also receive real-time road conditions to obtain more time-efficient information, and a driving computer can make more perfect judgment. Because ultraviolet communication is used, the system can get rid of the constraint of weather conditions, can work under severe weather conditions, has strong environment adaptability, and can effectively enlarge the radiation range and improve the stability during signal transmission by using an array instead of single signal source communication.
Drawings
The foregoing and/or other advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings and detailed description.
Fig. 1 is a schematic diagram of a basic structure of a variable information board capable of interacting with information of an unmanned vehicle.
Fig. 2 is a basic application scenario of a variable information board capable of interacting with information of an unmanned vehicle provided by the present application.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, a first embodiment of the present application discloses a variable information board 1 that can interact with information of an unmanned vehicle, including a road information receiver 100, a signal controller 200, a visual information display device 300, and an ultraviolet communication device 400, while installing a mating ultraviolet information receiver on the unmanned vehicle.
The road information receiver 100 is configured to receive traffic information transmitted by a traffic management department and transmit the traffic information to the signal controller 200;
the signal controller 200 is used for receiving and processing the traffic information and controlling the visual information display device 300 and the ultraviolet communication device 400;
the visual information display device 300 is configured to display text symbol information according to the control of the signal controller 200;
the ultraviolet communication device 400 is configured to send an ultraviolet signal to the ultraviolet information receiver according to the control of the signal controller 200, where the ultraviolet signal includes current road condition information;
the ultraviolet information receiver is configured to receive an ultraviolet signal sent by the ultraviolet communication device 400, so as to implement information interaction.
The visual information display device 300 is an LED display screen, and is mounted on the side of the variable information board 1 facing the direction of the coming vehicle by a fixing bolt.
The ultraviolet communication device 400 includes a first ultraviolet communication structure and a second ultraviolet communication structure, where the first ultraviolet communication structure and the second ultraviolet communication structure are connected with the signal controller 200 through buses, the first ultraviolet communication structure includes a first panel 401 and a first ultraviolet communication array 402 disposed on the first panel 401, and the second ultraviolet communication structure includes a second panel 403 and a second ultraviolet communication array 404 disposed on the second panel 403; the current road condition information comprises a safe driving prompt, current position and weather environment conditions, front lane accident information and road section congestion conditions.
By adopting the two ultraviolet communication structures, the signal radiation range can be enlarged on the premise of ensuring signal directionality and high gain, the wider pavement range around the information board is covered, more stable signal transmission connection is provided, and the situations of signal mistransmission, less transmission and the like are reduced.
The first ultraviolet communication array 402 and the second ultraviolet communication array 404 each include more than two basic transmission units 405, and the more than two basic transmission units 405 are orderly arranged to form a communication array.
Solar blind ultraviolet LEDs are adopted as a basic transmitting unit 405, and are orderly arranged to form an ultraviolet communication array. The first ultraviolet communication structure and the second ultraviolet communication structure are installed on the front side and the back side of the variable information board 1 through fixing bolts, wherein the first ultraviolet communication structure facing the coming direction is nested in the visual information display device 300, namely the LED display screen.
The base transmitting unit 405 and the ultraviolet information receiver select the solar blind area ultraviolet light with the wavelength of 200 to 280nm for wireless communication. Compared with other wireless communication modes, the ultraviolet light communication has the following advantages:
the background noise is low. Since ultraviolet light in the 200nm to 280nm band near the earth's surface is almost absorbed by the ozone layer, there is no fear of the existence of large background noise.
No precise alignment is required. Unlike laser communication, which requires precise alignment tracking, ultraviolet light is scattered by air, and the signal source is not a point source but a 'face' for the receiving end, so that the method can be applied to complex terrains.
The existing spectrum resources are not consumed. Current developments in microwave communications have depleted the use of existing frequency bands, while optical communications can effectively supplement existing communication modes.
The road information receiver 100 is connected to an information aggregation server of a traffic management department through an optical cable, and timely acquires traffic information including road information and related instruction information of the traffic management department. The information summarizing server of the traffic management department belongs to the prior art, and the embodiment of the invention is not limited herein.
The road information receiver 100 transmits the received traffic information signal to the signal controller 200, and the signal controller 200 controls the visual information display device 300 and the ultraviolet communication device 400 to include:
classifying the traffic information for the visual information display device 300 and the ultraviolet communication device 400 to obtain visual information and ultraviolet communication information;
decoding the visual information to obtain decoded visual information, and controlling the visual information display device 300 to display the decoded visual information;
the ultraviolet communication information is modulated and amplified to obtain an ultraviolet signal, and the ultraviolet communication array driving cycle of the ultraviolet communication device 400 is controlled to transmit the ultraviolet signal.
The above parts are main parts of the variable information board 1, and the variable information board 1 further includes other structures, such as a mounting bracket, and the main parts further include a power system, etc., which belong to the prior art, and embodiments of the present invention are not limited herein. The main body of the variable information board 1 is arranged on the mounting bracket which is higher than the road surface by a certain height through the fixing bolts, so that the later maintenance and overhaul are facilitated.
The unmanned vehicle is fixedly provided with an ultraviolet information receiver, the ultraviolet information receiver comprises an ultraviolet detector, an amplifier, a demodulator and a decoder, the ultraviolet detector is used for detecting an ultraviolet signal sent by the ultraviolet communication device 400, the amplifier is used for amplifying the ultraviolet signal, the demodulator is used for extracting binary information modulated in the ultraviolet signal, and the decoder decodes and converts the binary information into generally identifiable ultraviolet communication information. The unmanned vehicle moves on the road and the application scenario is shown in fig. 2.
The second embodiment of the application discloses a method for realizing a variable information board capable of interacting with information of an unmanned vehicle, which comprises the following steps:
the variable information board 1, which can interact with information of an unmanned vehicle, receives traffic information from an information aggregation server of a traffic management department in real time through the road information receiver 100, and transmits the traffic information to the signal controller 200.
The signal controller 200, upon receiving the traffic information signal, classifies the visual information display device 300 and the ultraviolet communication device 400 to obtain visual information and ultraviolet communication information.
The visual information of the visual information display apparatus 300 is directly displayed on the screen of the visual information display apparatus 300 after being decoded.
The ultraviolet communication information of the ultraviolet communication device 400 needs to be modulated, amplified, and the like, and finally the ultraviolet communication array of the ultraviolet communication device 400 drives and circularly emits ultraviolet signals.
When the unmanned vehicle drives through the variable information board 1, the ultraviolet information receiver captures ultraviolet signals, and the broadcast ultraviolet communication information is obtained through amplification, demodulation and decoding, so that information interaction is realized.
The invention provides a variable information board capable of interacting with unmanned vehicle information and a realization method thereof, and the method and the way for realizing the technical scheme are numerous, the above description is only a specific embodiment of the invention, and it should be pointed out that a plurality of improvements and modifications can be made to those skilled in the art without departing from the principle of the invention, and the improvements and modifications are also considered as the protection scope of the invention. The components not explicitly described in this embodiment can be implemented by using the prior art.
Claims (1)
1. A variable information board capable of interacting with information of an unmanned vehicle, which is characterized by comprising a road information receiver (100), a signal controller (200), a visual information display device (300) and an ultraviolet communication device (400), wherein the unmanned vehicle is provided with a matched ultraviolet information receiver;
the road information receiver (100) is used for receiving traffic information sent by a traffic management department and sending the traffic information to the signal controller (200);
the signal controller (200) is used for receiving and processing the traffic information and controlling the visual information display device (300) and the ultraviolet communication device (400);
the visual information display device (300) is used for displaying literal symbol information according to the control of the signal controller (200);
the ultraviolet communication device (400) is used for sending an ultraviolet signal to the ultraviolet information receiver according to the control of the signal controller (200), wherein the ultraviolet signal comprises current road condition information;
the ultraviolet information receiver is used for receiving ultraviolet signals sent by the ultraviolet communication device (400) and realizing information interaction;
the ultraviolet communication device (400) comprises a first ultraviolet communication structure and a second ultraviolet communication structure, wherein the first ultraviolet communication structure and the second ultraviolet communication structure are connected with the signal controller (200) through buses, the first ultraviolet communication structure comprises a first panel (401) and a first ultraviolet communication array (402) arranged on the first panel (401), and the second ultraviolet communication structure comprises a second panel (403) and a second ultraviolet communication array (404) arranged on the second panel (403); the current road condition information comprises a safe driving prompt, current position and weather environment conditions, front lane accident information and road section congestion conditions;
the first ultraviolet communication array (402) and the second ultraviolet communication array (404) comprise more than two basic sending units (405), and the more than two basic sending units (405) are orderly arranged to form a communication array;
the basic transmitting unit (405) is a solar blind ultraviolet LED, and solar blind ultraviolet light with the wavelength of 200nm to 280nm is selected between the basic transmitting unit (405) and the ultraviolet information receiver for wireless communication;
the visual information display device (300) is an LED display screen and is positioned on one surface facing the coming vehicle direction;
the first ultraviolet communication structure is nested within a visual display device (300);
the road information receiver (100) is connected with an information summarizing server of a traffic management department through an optical cable, and timely acquires traffic information including road information and related indication information of the traffic management department;
the signal controller (200) processes the traffic information and controls a visual information display device (300) and an ultraviolet communication device (400) to include:
classifying the traffic information with respect to a visual information display device (300) and an ultraviolet communication device (400) to obtain visual information and ultraviolet communication information;
decoding the visual information to obtain decoded visual information, and controlling a visual information display device (300) to display the decoded visual information;
modulating and amplifying the ultraviolet communication information to obtain an ultraviolet signal, and controlling an ultraviolet communication device (400) to drive and circularly send the ultraviolet signal;
the ultraviolet information receiver comprises an ultraviolet detector, an amplifier, a demodulator and a decoder, wherein the ultraviolet detector is used for detecting an ultraviolet signal sent by the ultraviolet communication device (400), the amplifier is used for amplifying the ultraviolet signal, the demodulator is used for extracting binary information modulated in the ultraviolet signal, and the decoder decodes and converts the binary information into identifiable ultraviolet communication information;
the variable information board capable of interacting with the information of the unmanned vehicle is applied to the following method, and comprises the following steps of:
the road information receiver (100) receives traffic information from a traffic management department in real time and transmits the traffic information to the signal controller (200);
the signal controller (200) receives traffic information, classifies the traffic information aiming at the visual information display device (300) and the ultraviolet communication device (400) and obtains visual information and ultraviolet communication information;
decoding the visual information to obtain decoded visual information; directly displaying the decoded visual information on a visual information display device (300);
modulating and amplifying the ultraviolet communication information to obtain an ultraviolet signal; driven by an ultraviolet communication device (400), circularly transmitting ultraviolet signals;
when the unmanned vehicle drives through the variable information board, the ultraviolet information receiver captures the ultraviolet signals, and the broadcast ultraviolet communication information is obtained through amplification, demodulation and decoding, so that information interaction is realized.
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| CN102163373A (en) * | 2011-05-05 | 2011-08-24 | 白维 | Infrared road directional traffic communication directing and prompting system |
| CN205428216U (en) * | 2016-03-23 | 2016-08-03 | 长安大学 | High early warning system of automobile body under road limit for height condition |
| CN106019211B (en) * | 2016-05-12 | 2019-01-18 | 西安工程大学 | A kind of tank location of communication system and communication means based on wireless ultraviolet light |
| CN107564316B (en) * | 2017-10-18 | 2022-02-25 | 特路（北京）科技有限公司 | Information processing method for information board and information board |
| CN108674450A (en) * | 2018-06-27 | 2018-10-19 | 西安工程大学 | Rail vehicle collision avoidance system and collision-proof method based on wireless ultraviolet light |
| CN109285364A (en) * | 2018-11-20 | 2019-01-29 | 公安部交通管理科学研究所 | A kind of traffic offence realtime alarm system and alarm method |
| CN109870679A (en) * | 2019-02-21 | 2019-06-11 | 西安理工大学 | A kind of airport ground service automobile wireless ultraviolet light anti-collision early warning method |
| CA3034485C (en) * | 2019-02-21 | 2019-09-24 | Juan M. Miranda | Communication system for traffic control equipment |
| CN211124362U (en) * | 2019-10-18 | 2020-07-28 | 长安大学 | Multisource traffic information perception roadside equipment towards wisdom highway |
| CN211406026U (en) * | 2020-02-28 | 2020-09-01 | 淮南师范学院 | Monitoring system with ultraviolet laser communication function |
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