CN111882864A - Road digital signage control system of urban intelligent traffic - Google Patents
Road digital signage control system of urban intelligent traffic Download PDFInfo
- Publication number
- CN111882864A CN111882864A CN202010629683.2A CN202010629683A CN111882864A CN 111882864 A CN111882864 A CN 111882864A CN 202010629683 A CN202010629683 A CN 202010629683A CN 111882864 A CN111882864 A CN 111882864A
- Authority
- CN
- China
- Prior art keywords
- road
- vehicle
- information
- sign
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
-
- 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
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- 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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Remote Sensing (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides a road digital signage control system for urban intelligent traffic, which comprises: the system comprises a road monitoring module, a central processing module, a label control module and a digital label arranged on an urban road; the road monitoring module is used for acquiring road traffic data and sending the acquired road traffic data to the central processing module; the central processing module is used for analyzing the received road traffic data and analyzing the traffic condition of each road in the city, wherein the traffic condition of the road comprises the congestion information of the road; and the sign control module is used for sending a corresponding display instruction to the digital sign corresponding to the road when the central processing module analyzes that the road is congested. The digital sign is used for controlling the digital sign corresponding to the congested road to display the congested road information, so that the digital sign is beneficial to playing the roles of prompting and early warning for a driver of a vehicle about to enter the congested road, and more reasonable path planning is facilitated.
Description
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to a road digital signage control system for urban intelligent traffic.
Background
Along with the development of urban intelligent traffic, more and more digital signs are arranged in urban roads, but in the prior art, the digital signs generally display traffic safety reminding information and the like, and periodically and circularly play fixed display information to prompt drivers of vehicles running on the roads; however, most of the display contents of the digital signage are pre-recorded by workers, the intelligent level is not high, and the actual prompting effect is deviated.
Disclosure of Invention
In view of the above problems, the present invention is directed to a road sign control system for urban intelligent traffic.
The purpose of the invention is realized by adopting the following technical scheme:
a road digital signage control system for urban intelligent traffic is provided, comprising:
the system comprises a road monitoring module, a central processing module, a label control module and a digital label arranged on an urban road; wherein
The road monitoring module is used for acquiring road traffic data and sending the acquired road traffic data to the central processing module;
the central processing module is used for analyzing the received road traffic data and analyzing the traffic condition of each road in the city, wherein the traffic condition of the road comprises the congestion information of the road;
the sign control module is used for sending a corresponding display instruction to the digital sign corresponding to the road when the central processing module analyzes that the road is congested;
the road monitoring module comprises a vehicle-mounted acquisition node and a convergence node, wherein the vehicle-mounted acquisition node is deployed in a road driving vehicle, and the convergence node is deployed on a digital sign and is used for acquiring vehicle driving information of the vehicle in which the vehicle is located as road traffic data; the vehicle running information comprises acquisition time, positioning information and the average running speed of the vehicle in a time period; the convergent node is used for collecting road traffic data collected by the vehicle-mounted collection node and uploading the road traffic data to the central processing module.
In one embodiment, the signage control module further comprises a signage database;
the sign database stores ID information of each digital sign distributed in the urban road and road information corresponding to each digital sign.
In one embodiment, the signage control module further comprises a map database;
the map database stores road network information of a city, which comprises the connection relation and the connection relation network of each road of the city.
In one embodiment, the central processing module is disposed in a cloud computing platform; the central processing module and the sink node realize data interaction through a wireless network.
In one embodiment, the sink node establishes a connection with a vehicle-mounted acquisition node within its communication range and implements data interaction with the vehicle-mounted acquisition node within its communication range.
In one embodiment, the central processing module analyzes the received road traffic data, including:
1) performing primary classification according to positioning information contained in the received road traffic data, and corresponding the road traffic data to corresponding roads;
2) for each road, performing secondary screening according to acquisition time information contained in the received road traffic data, and screening out road traffic data of which the time difference between the acquisition time and the current time is smaller than a set threshold range as target data;
3) calculating an average value according to the average running speed of the vehicle in a time period, wherein the average value is contained in all the target data and is used as the running speed information of the road;
4) and judging the form speed information of the road, and marking the road as a congested road when the road running speed information is less than a set first threshold value.
In one embodiment, the sign control module sends a congestion display instruction of the congested road to a digital sign corresponding to an incoming road of the congested road according to the road information marked as the congested road, and controls the corresponding digital sign to display the congestion information of the congested road.
The invention has the beneficial effects that:
1) the vehicle-mounted collection node is arranged in the vehicle, so that the traffic condition of the road where the vehicle is located is accurately reflected according to the data collected by the vehicle-mounted collection node in the running process of the vehicle on the urban road, and the accuracy is high.
2) According to the road traffic data collected by the road monitoring module, the central processing module performs unified processing, analyzes the congested road, controls digital signs corresponding to the congested road (such as digital signs arranged on other roads entering the congested road) and controls the digital signs to display the congested road information, so that the digital signs are helpful for prompting and early warning a driver of a vehicle about to enter the congested road, and more reasonable path planning is facilitated.
3) The digital sign on the road is used as a sink node, collects and fuses data of the vehicle-mounted collection nodes, uploads the collected data to the central processing module for processing, and can help to reduce overall energy consumption of the road monitoring module and improve data transmission quality.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a frame structure diagram of the present invention.
Reference numerals:
road monitoring module 1, central processing module 2, sign control module 3 and digital sign 4
Detailed Description
The invention is further described in connection with the following application scenarios.
Referring to fig. 1, there is shown a road digital signage 4 control system for urban intelligent traffic, comprising:
the system comprises a road monitoring module 1, a central processing module 2, a label control module 3 and a digital label 4 arranged on an urban road; wherein
The road monitoring module 1 is used for collecting road traffic data and sending the collected road traffic data to the central processing module 2;
the central processing module 2 is used for analyzing the received road traffic data and analyzing the traffic condition of each road in the city, wherein the traffic condition of the road comprises the congestion information of the road;
the sign control module 3 is used for sending a corresponding display instruction to the digital sign 4 corresponding to the road when the central processing module 2 analyzes that the road is congested;
the road monitoring module 1 comprises a vehicle-mounted acquisition node deployed in a road running vehicle and a convergence node deployed on the digital sign 4, wherein the vehicle-mounted acquisition node is used for acquiring vehicle running information of the vehicle in which the vehicle is located as road traffic data; the vehicle running information comprises acquisition time, positioning information and the average running speed of the vehicle in a time period; the convergent node is used for collecting road traffic data collected by the vehicle-mounted collection node and uploading the road traffic data to the central processing module 2.
By arranging the vehicle-mounted acquisition nodes in the vehicle, the traffic condition of the road where the vehicle is located is accurately reflected according to the data acquired by the vehicle-mounted acquisition nodes in the running process of the vehicle on the urban road, and the accuracy is high.
Meanwhile, compared with the prior art that road traffic information is collected through the fixedly arranged roadside collection nodes, the road traffic information is collected through the vehicle-mounted collection nodes arranged in the vehicle, and the problem that under the condition that no vehicle runs possibly existing in a remote road or a road at a late night, the roadside collection nodes need to continuously collect energy, so that energy consumption is wasted can be avoided. Through the mode of the vehicle-mounted collection node, corresponding road traffic information can be acquired only when a vehicle is on the road, and further processing is carried out, so that information processing screening can be realized, and the processing mode of urban intelligent traffic information processing is optimized.
According to the road traffic data collected by the road monitoring module 1, the central processing module 2 performs unified processing, analyzes the congested road, controls the digital sign 4 corresponding to the congested road (such as the digital sign 4 arranged on other roads entering the congested road) and controls the digital sign to display the congested road information, thereby being beneficial to playing the prompting and early warning roles on the driver of the vehicle about to enter the congested road and facilitating the more reasonable path planning.
The digital sign 4 arranged on the road simultaneously serves as a sink node, collects and fuses data of the vehicle-mounted collection nodes, uploads the collected data to the central processing module 2 for processing, and can help to reduce overall energy consumption of the road monitoring module 1 and improve data transmission quality.
In one scenario, because the driving speed of the vehicle may have a condition with a large speed change frequency according to road conditions (such as traffic lights), drivers (such as driving habits of the drivers) and other factors, a proper acquisition period is set in the present application, and then the average speed of the vehicle in the acquisition period is used as a reference, so as to reflect the current driving speed of the vehicle in the road section.
In one embodiment, signage control module 3 further comprises a signage database;
the sign database stores ID information of each digital sign 4 distributed in the urban road and road information corresponding to each digital sign 4.
In one embodiment, the signage control module 3 further comprises a map database;
the map database stores road network information of a city, which comprises the connection relation and the connection relation network of each road of the city. The method comprises the information of the driving-in road and the driving-out road corresponding to each road.
In one embodiment, the central processing module 2 is disposed in a cloud computing platform; the central processing module 2 and the sink node realize data interaction through a wireless network.
In one embodiment, the signage control module 3 is disposed in a cloud computing platform; and the label control module 3 and the convergent node and/or the digital label 4 realize data interaction through a wireless network. The sign control module 3 may directly establish communication with the designated digital sign 4 to transmit the display instruction, or return the display instruction to the corresponding sink node, and the sink node transmits the display instruction to the digital sign 4 corresponding thereto.
In one embodiment, the sink node establishes a connection with a vehicle-mounted acquisition node within its communication range and implements data interaction with the vehicle-mounted acquisition node within its communication range. The sink node periodically collects data collected by the vehicle-mounted collection nodes in the communication range of the sink node with a first set period, and periodically uploads the data collected in the period to the central processing module 2 with a second set period.
In one embodiment, the sink node periodically sends broadcast information to the vehicle-mounted collection nodes within its transmission range, and the vehicle-mounted collection nodes establish connection with the sink node after receiving the broadcast information.
In one embodiment, when the vehicle-mounted collection node does not receive the broadcast information sent by the sink node or cannot establish connection with the sink node for a period of time exceeding a set time, the vehicle-mounted collection node starts to search other vehicle-mounted collection nodes within the communication range of the vehicle-mounted collection node as neighbor nodes, selects one relay node from the neighbor nodes, and sends the vehicle running information collected by the relay node to the sink node through the relay node.
The method for selecting the relay node by the vehicle-mounted acquisition node comprises the following steps:
1) the vehicle-mounted collection node sends a relay request signal to a neighbor node of the vehicle-mounted collection node and receives a relay reply signal returned by the neighbor node, wherein the relay reply signal comprises information whether the neighbor node establishes connection with the aggregation node, data transmission delay information between the neighbor node and the aggregation node and collected vehicle running information of the neighbor node;
2) respectively judging the performance of the neighbor nodes from the neighbor nodes which are connected with the aggregation node, wherein the performance of the neighbor nodes is obtained by the following function:
in the formula, DjRepresenting a performance score of a jth neighbor node of the neighbor nodes that have established a connection with the sink node, wherein J is 1, 2. v. ofjRepresents the current average running speed, v, of the vehicle contained in the running information of the vehicle returned by the jth neighbor nodemaxRepresenting the maximum current vehicle average traveling speed returned from the neighbor node; t isjDenotes the duration of the connection between the jth neighbor node and the sink node, YjThe data transmission delay between the jth neighbor node and the sink node is represented, and Y' represents a set delay standard value; alpha is alpha1、α2、α3Respectively represent the set adjustment factors;
3) and selecting the neighbor node with the maximum performance score as the relay node of the vehicle-mounted acquisition node according to the performance scores of the neighbor nodes, and sending the acquired data to the sink node through the selected relay node by the vehicle-mounted acquisition node.
In the above embodiment, the situation that the vehicle-mounted collection node cannot establish a connection with the aggregation node in a tunnel or other special situations, so that the collected vehicle driving information cannot be sent to the central management module is solved. When the vehicle-mounted acquisition node cannot be connected with the sink node continuously for a time period exceeding the set time period, the vehicle-mounted acquisition node performs data transmission with the sink node in a multi-hop mode by taking other vehicle-mounted nodes as relay nodes, and the data transmission performance of the vehicle-mounted acquisition node under special conditions can be improved.
Meanwhile, when the relay node is selected, considering that the vehicle-mounted node is arranged in a vehicle running on a road, since the moving relay node can cause certain influence on signal transmission, in order to ensure the data transmission performance of the relay node, a neighbor node with a slower moving speed is selected as the relay node, so that the effect is better; meanwhile, the communication performance (continuous communication time and delay) of the relay node and the sink node is taken as a basis, the performance of the neighbor nodes is comprehensively judged, the optimal neighbor node is selected from the performance of the neighbor nodes to serve as the relay node to realize multi-hop data transmission, the transmission performance of the vehicle-mounted acquisition node on the acquired data is improved, and the acquired information can be accurately transmitted to the central management module in real time.
In one embodiment, the central processing module 2 analyzes the received road traffic data, including:
1) performing primary classification according to positioning information contained in the received road traffic data (for example, acquiring a corresponding road according to the positioning information), and corresponding the road traffic data to the corresponding road;
2) for each road, performing secondary screening according to acquisition time information contained in the received road traffic data, and screening out road traffic data of which the time difference between the acquisition time and the current time is smaller than a set threshold range as target data; in order to ensure the real-time control of the digital label 4, the selected analysis data is analyzed according to the data collected in the latest period of time;
3) calculating the average value of the running speeds of all target vehicles according to the average running speeds of the vehicles in a time period, wherein the average value of the running speeds of all the target vehicles is contained in all the target data and is used as the running speed information of the road;
4) and judging the formal speed information of the link, and marking the link as a congested link when the road running speed information is less than a set first threshold (for example, 20 km/h).
In one embodiment, the sign control module 3 sends a congestion display instruction of the congested road to the digital sign 4 corresponding to the incoming road of the congested road according to the road information marked as the congested road, and controls the corresponding digital sign 4 to display the congestion information of the congested road.
The entrance road of the congested road is communicated with the congested road, which is acquired according to the map information, and the traffic flow can enter other roads of the congested road;
in one scenario, the inbound road may be a direct inbound road in direct communication with the congested road, or an indirect inbound road in indirect communication with the congested road toward the congested road (e.g., a secondary inbound road in communication with the direct inbound road, or a tertiary inbound road further extended to the secondary inbound road, etc.)
The urban road is divided into a one-way lane as one road, namely, a two-way lane, which is set to include two roads in the application.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be analyzed by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A road digital signage control system of urban intelligent traffic, comprising:
the system comprises a road monitoring module, a central processing module, a label control module and a digital label arranged on an urban road; wherein
The road monitoring module is used for acquiring road traffic data and sending the acquired road traffic data to the central processing module;
the central processing module is used for analyzing the received road traffic data and analyzing the traffic condition of each road in the city, wherein the traffic condition of the road comprises the congestion information of the road;
the sign control module is used for sending a corresponding display instruction to the digital sign corresponding to the road when the central processing module analyzes that the road is congested;
the road monitoring module comprises a vehicle-mounted acquisition node and a convergence node, wherein the vehicle-mounted acquisition node is deployed in a road running vehicle, and the convergence node is deployed on a digital sign and is used for acquiring vehicle running information of the vehicle in which the vehicle is located as the road traffic data; wherein the vehicle driving information comprises acquisition time, positioning information and an average driving speed of the vehicle in a time period; the convergent node is used for collecting road traffic data collected by the vehicle-mounted collection node and uploading the road traffic data to the central processing module.
2. The road sign control system for intelligent urban traffic according to claim 1, wherein said sign control module further comprises a sign database and a map database;
the sign database stores the ID information of each digital sign distributed in the urban road and the road information corresponding to each digital sign.
The map database stores road network information of a city, which comprises the connection relation and the connection relation network of each road of the city.
3. The road sign board control system for intelligent urban traffic of claim 1, wherein the central processing module is disposed in a cloud computing platform; and the central processing module and the sink node realize data interaction through a wireless network.
4. The road digital signage control system of urban intelligent traffic as recited in claim 1, wherein the aggregation node establishes connection with the vehicle-mounted collection nodes in the communication range thereof and realizes data interaction with the vehicle-mounted collection nodes in the communication range thereof.
5. The road sign control system for intelligent urban traffic as claimed in claim 1, wherein the central processing module analyzes the received road traffic data, comprising:
1) performing primary classification according to positioning information contained in the received road traffic data, and corresponding the road traffic data to corresponding roads;
2) for each road, performing secondary screening according to acquisition time information contained in the received road traffic data, and screening out road traffic data of which the time difference between the acquisition time and the current time is smaller than a set threshold range as target data;
3) calculating an average value according to the average running speed of the vehicle in a time period, wherein the average value is contained in all the target data and is used as the running speed information of the road;
4) judging the form speed information of the road, and marking the road as a congested road when the form speed information of the road is less than a set first threshold value;
and the sign control module sends a congestion display instruction of the congested road to a digital sign corresponding to an access road of the congested road according to the road information marked as the congested road, and controls the digital sign to display the congestion information of the congested road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629683.2A CN111882864A (en) | 2020-07-02 | 2020-07-02 | Road digital signage control system of urban intelligent traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629683.2A CN111882864A (en) | 2020-07-02 | 2020-07-02 | Road digital signage control system of urban intelligent traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111882864A true CN111882864A (en) | 2020-11-03 |
Family
ID=73150950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010629683.2A Withdrawn CN111882864A (en) | 2020-07-02 | 2020-07-02 | Road digital signage control system of urban intelligent traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111882864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898549A (en) * | 2022-03-07 | 2022-08-12 | 上海市城市建设设计研究总院（集团）有限公司 | Information display system and method for road travel time and information board |
| CN115472026A (en) * | 2021-06-10 | 2022-12-13 | 湖南九九智能环保股份有限公司 | Method and system for commanding vehicle to run by intelligent fluorescent landmark in material shed |
-
2020
- 2020-07-02 CN CN202010629683.2A patent/CN111882864A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472026A (en) * | 2021-06-10 | 2022-12-13 | 湖南九九智能环保股份有限公司 | Method and system for commanding vehicle to run by intelligent fluorescent landmark in material shed |
| CN115472026B (en) * | 2021-06-10 | 2023-06-20 | 湖南九九智能环保股份有限公司 | Method and system for commanding vehicle to travel through intelligent fluorescent landmarks in material shed |
| CN114898549A (en) * | 2022-03-07 | 2022-08-12 | 上海市城市建设设计研究总院（集团）有限公司 | Information display system and method for road travel time and information board |
| CN114898549B (en) * | 2022-03-07 | 2023-10-10 | 上海市城市建设设计研究总院（集团）有限公司 | Highway travel time information display system, method and information board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109087503B (en) | Vehicle-vehicle cooperation system and method based on V2X | |
| Djahel et al. | Toward V2I communication technology-based solution for reducing road traffic congestion in smart cities | |
| US5528234A (en) | Traffic monitoring system for determining vehicle dimensions, speed, and class | |
| EP2876620B1 (en) | Driving assistance system and driving assistance method | |
| CN109979220B (en) | High-speed service area intelligent system for automobile trip | |
| CN102903237B (en) | Device and method for traffic management service | |
| WO2022042098A1 (en) | Remote driving method, apparatus, and system, device, and medium | |
| CN108848460B (en) | Man-vehicle association method based on RFID and GPS data | |
| CN107490384B (en) | Optimal static path selection method based on urban road network | |
| CN103745612A (en) | Vehicle-mounted terminal and intelligent traffic management device capable of realizing real-time interaction with same | |
| CN108922194A (en) | A kind of dynamic controllable intelligent traffic information prompting system based on big data | |
| CN103200526A (en) | Vehicular ad hoc network routing method based on road side units (RSUs) | |
| CN108039046B (en) | Urban intersection pedestrian detection and identification system based on C-V2X | |
| US7116245B1 (en) | Method and system for beacon/heading emergency vehicle intersection preemption | |
| CN112489433A (en) | Traffic congestion analysis method and device | |
| CN113409607A (en) | Road condition information pushing system, method, device, equipment and storage medium | |
| CN111882864A (en) | Road digital signage control system of urban intelligent traffic | |
| US20230118619A1 (en) | Parking-stopping point management device, parking-stopping point management method, and vehicle device | |
| US10930145B2 (en) | Traffic system for predicting and providing traffic signal switching timing | |
| Seredynski et al. | The emerging applications of intelligent vehicular networks for traffic efficiency | |
| CN114283619A (en) | Vehicle obstacle avoidance system, platform framework, method and vehicle based on V2X | |
| CN111882472A (en) | Urban intelligent traffic information management system based on Internet of things | |
| CN110072210B (en) | Road network information collection method under vehicle-mounted self-organizing network RSU missing scene | |
| CN111653110B (en) | Intelligent traffic light system based on Beidou satellite positioning | |
| CN110049467B (en) | Region clustering method based on different signal lamp states |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201103 |
|
| WW01 | Invention patent application withdrawn after publication |