CN111898225A - System, method and readable storage medium for quickly creating simulation road network - Google Patents
System, method and readable storage medium for quickly creating simulation road network Download PDFInfo
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- 238000005516 engineering process Methods 0.000 description 3
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Abstract
The invention discloses a system, a method and a readable storage medium for quickly creating a simulation road network, wherein the system comprises an intersection channelized generation module, a simulation road network generation module and a simulation road network generation module, wherein an intersection channelized graph is generated by utilizing an intersection channelized drawing method according to acquired intersection channelized data; the road section generating module is used for generating a road section map according to the intersection information generated by the intersection channelizing module; the road network generation and display module is used for automatically creating a simulation road network according to the data of the intersection channelized generation module and the road section generation module and displaying the simulation road network on the electronic map in a layer mode; the simulation road network export module: and analyzing and converting the road network data generated by the three modules into a corresponding road network format according to the data format required by the simulation road network file, and writing the road network data into the simulation road network file, thereby realizing the rapid creation of the simulation road network. The method is simple and convenient to operate, simplifies the workload of manual editing, and improves the automation capability of road network generation.
Description
Technical Field
The invention relates to the technical field of microscopic traffic simulation, in particular to a system, a method and a readable storage medium for quickly creating a simulated road network.
Background
The traffic simulation technology is an important component of intelligent technology, is an important application of computer technology in the field of traffic engineering, can dynamically and realistically simulate various traffic phenomena such as traffic flow, traffic accidents and the like, reproduce the time-space change of the traffic flow, deeply analyze the characteristics of vehicles, drivers, pedestrians, roads and traffic, and effectively carry out research on aspects such as traffic planning, traffic organization and management, traffic energy conservation, material transportation flow rationalization and the like.
The creation of road network is the foundation of simulation, and the existing Vissim simulation software only carries out manual operation through a road network editor provided by the simulation software and needs to be drawn based on detailed CAD drawings such as road engineering drawings. As disclosed in chinese patent publication No.: CN102521438A, published: 2012-06-27, which discloses a two-stage parameter calibration method for traffic conflict simulation, specifically constructing an intersection model in the first step: the micro traffic simulation software VISSIM is widely applied to the field of micro traffic simulation, and the construction of an intersection simulation model firstly requires the on-site data acquisition of an intersection, including the information of intersection geometric dimension, traffic flow, large and small vehicle proportion, traffic signal timing and the like. And then establishing a simulated intersection according to the intersection aerial photograph or the CAD graph, and defining information such as traffic flow, large and small vehicle proportion, vehicle speed, traffic signal timing and the like in the simulation model according to the actual observation data.
The process is time-consuming and labor-consuming, common researchers cannot use the road network data due to the confidentiality of the road engineering drawings, and the road network data provided by other existing systems is difficult to use.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a system, a method and a readable storage medium for quickly creating a simulation road network, which are simple and convenient to operate, simplify the workload of manual editing and improve the automation capability of road network generation.
In order to achieve the purpose of the invention, the technical scheme is as follows: a system for quickly creating a simulation road network comprises an intersection channelizing generation module, a road section generation module, a road network generation and display module and a simulation road network export module;
the intersection canalization generating module generates an intersection canalization graph by using an intersection canalization drawing method according to the acquired intersection canalization data;
the road section generating module is used for setting a road section connection relation between two road sections according to the road section information generated by the road section canalization module, setting information of the road section such as the trend, the green belt and the lane, and logically connecting the two road sections into a road section so as to generate a road section map;
the road network generation and display module automatically creates a simulation road network according to the data of the intersection canalization generation module and the road section generation module and displays the simulation road network on the electronic map in a layer mode;
the simulation road network export module: and analyzing and converting the road network data generated by the three modules into a corresponding road network format according to the data format required by the simulation road network file, and writing the road network data into the simulation road network file, thereby realizing the rapid creation of the simulation road network.
Based on the system for quickly creating the simulated road network, the invention also provides a method for quickly creating the simulated road network, which comprises the following steps:
s1: acquiring intersection canalization data, inputting an intersection canalization generation module, adjusting included angles of all entrances of an intersection and direction angles of the intersection to enable the intersection to meet actual conditions, and calculating coordinates of a plurality of elements including an entrance lane, a green belt and a zebra crossing in all directions according to the input intersection canalization data and longitude and latitude information and an intersection central point as a reference according to an intersection canalization drawing method for drawing an intersection canalization diagram;
s2: according to the intersection information set in the step S2, setting a starting intersection and an ending intersection of the road section, a green belt width, a lane number and a lane width on the road section generating module, and drawing the road section between the two intersections on the electronic map, thereby realizing the generation of the road section map by using the road section generating module;
s3: the method comprises the steps that a road network generation and display module is utilized to count all relationships between intersections and road sections, intersection canalization graphs and road section relationship graphs are drawn on an electronic map according to longitude and latitude information, finally, a road network is formed, and a simulation road network is displayed on the electronic map in a map layer mode;
s4: and converting the road network data created in the steps S1-S3 into a road network data format required by simulation software by using a simulation road network export module, and writing the road network data into a simulation road network file to realize the rapid creation of the simulation road network.
The invention also provides a readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method for quickly creating a simulated road network.
The invention has the following beneficial effects:
compared with the prior art, the method is convenient to operate, the electronic map and the existing road information can be used for quickly creating the road network, and the created road network can be used as a high-precision map for other systems to be repeatedly used; meanwhile, the necessity of road engineering drawings is omitted, so that the way of acquiring road network data is more diversified; meanwhile, the workload of manually drawing the road network is simplified; the invention can realize the microscopic simulation of road networks, road sections and single intersections.
Drawings
Fig. 1 is a block diagram of a system for quickly creating a simulated road network according to embodiment 1.
Fig. 2 is a flowchart of a method for quickly creating a simulated road network according to embodiment 2.
Fig. 3 is a flowchart of forming a link connector according to embodiment 2.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
Example 1
As shown in fig. 1, a system for quickly creating a simulated road network includes an intersection channelized generation module, a road section generation module, a road network generation and display module, and a simulated road network export module;
the intersection canalization generating module generates an intersection canalization graph by using an intersection canalization drawing method according to the acquired intersection canalization data;
the road section generating module is used for setting a road section connection relation between two road sections according to the road section information generated by the road section canalization module, setting information of the road section such as the trend, the green belt and the lane, and logically connecting the two road sections into a road section so as to generate a road section map;
the road network generation and display module automatically creates a simulation road network according to the data of the intersection canalization generation module and the road section generation module and displays the simulation road network on the electronic map in a layer mode;
the simulation road network export module: and analyzing and converting the road network data generated by the three modules into a corresponding road network format according to a data format required by simulation road network software, and writing the road network data into a VISSIM simulation road network file, thereby realizing the rapid creation of the simulation road network. The simulation road network software further comprises a Caliper, Paramics and FLOWSIM. The road network format is specifically converted, and corresponding setting can be performed according to the requirements of specifically used simulation road network software.
In a specific embodiment, the intersection canalization generation module comprises a manual creation submodule and an external introduction submodule;
the external import submodule imports intersection channelized data generated by other systems according to a specified format;
the manual establishing sub-module can automatically generate an establishing intersection layer by positioning and selecting the intersection to be established on the electronic map, and enter and adjust the relevant parameters of intersection canalization on an intersection canalization information entry interface to enable the parameters to be matched with the intersection structure on the electronic map.
In a specific embodiment, the intersection data information includes: the system comprises a crossing name, an entrance and exit direction, the number of lanes at each entrance and exit, the width of each lane, the function type of each lane, the type and width of a central isolation strip, a zebra crossing, a pedestrian crossing safety island, a right-turn channelized type and a non-motor lane.
Example 2
Based on the system for quickly creating a simulated road network described in embodiment 1, this embodiment provides a method for quickly creating a simulated road network, as shown in fig. 2, where the method performs the following steps:
s1: collecting intersection channelized data and road section data at a real scene map or at an actual intersection for all intersections needing to draw a road network, wherein the intersection channelized data and the road section data can be obtained by combining GIS data, an internet aerial photograph and a street scene map of a city or at the actual intersection; or intersection structure data can be obtained through the existing system, and intersection channelized data and road section data can be collected through traffic flow detectors, wherein the traffic flow detectors specifically comprise geomagnetic detectors, coils, microwaves detectors and video detectors. And positioning to a corresponding intersection on the electronic map, recording the longitude and latitude of the intersection and creating the intersection.
Inputting the obtained intersection channelized data and intersection data into an intersection channelized generation module, adjusting the included angle of each entrance of the intersection and the direction angle of the intersection to enable the included angle and the direction angle of the intersection to be in line with the actual situation, calculating the coordinates of several elements including an entrance lane, a green belt and a zebra crossing in each direction according to an intersection channelized drawing method by taking an intersection center point as a reference according to the input intersection channelized data and longitude and latitude information, and drawing an intersection channelized graph;
the intersection channelized data information comprises: crossing name, direction of entrance and exit, number of lanes and width of each lane at each entrance and exit, function type of each lane, type and width of central isolation strip, zebra crossing, pedestrian crossing safety island, right-turn channelized type, non-motor vehicle lane, etc.
S2: according to the intersection information set in the step S2, setting a starting intersection and an ending intersection of the road section, a green belt width, a lane number and a lane width on the road section generating module, and drawing the road section between the two intersections on the electronic map, thereby realizing the generation of the road section map by using the road section generating module; and the trend, the bending degree and the like of the road section can be manually adjusted to be in line with the reality.
S3: the method comprises the steps that a road network generation and display module is utilized to count all relationships between intersections and road sections, intersection canalization graphs and road section relationship graphs are drawn on an electronic map according to longitude and latitude information, finally, a road network is formed, and a simulation road network is displayed on the electronic map in a map layer mode;
s4: and converting the road network data created in the steps S1-S3 into a road network data format required by simulation software by using a simulation road network export module, and writing the road network data into a simulation road network file to realize the rapid creation of the simulation road network.
In a specific embodiment, step S4, converting the road network data into a road network data format required by the simulation software, specifically, converting the intersection canalization structure into a set consisting of a plurality of turning road segments and road segment connectors, and dividing the intersection into several parts including an entrance in each direction, an exit in each direction, and a central turning area, wherein the exit in each direction and the entrance in each direction can be directly used as road segments to be converted into the simulation road network data; the central steering area judges the driving path of the vehicle according to the steering type of the entrance lane in a certain direction, establishes the connection relationship between the entrance lane in the current direction and the exit lanes in other directions to form a road connector, and the flow is as shown in fig. 3, and the converted data is exported to a simulation road network file according to a road network data format to realize rapid establishment.
Example 3
The present embodiments also provide a readable storage medium having stored thereon a computer program that when executed by a processor performs the steps of:
s1: collecting intersection channelized data and road section data at a real scene map or at an actual intersection for all intersections needing to draw a road network, wherein the intersection channelized data and the road section data can be obtained by combining GIS data, an internet aerial photograph and a street scene map of a city or at the actual intersection; or intersection structure data can be obtained through the existing system, and intersection channelized data and road section data can be collected through traffic flow detectors, wherein the traffic flow detectors specifically comprise geomagnetic detectors, coils, microwaves detectors and video detectors. And positioning to a corresponding intersection on the electronic map, recording the longitude and latitude of the intersection and creating the intersection.
Inputting the obtained intersection channelized data and intersection data into an intersection channelized generation module, adjusting the included angle of each entrance of the intersection and the direction angle of the intersection to enable the included angle and the direction angle of the intersection to be in line with the actual situation, calculating the coordinates of several elements including an entrance lane, a green belt and a zebra crossing in each direction according to an intersection channelized drawing method by taking an intersection center point as a reference according to the input intersection channelized data and longitude and latitude information, and drawing an intersection channelized graph;
the intersection channelized data information comprises: crossing name, direction of entrance and exit, number of lanes and width of each lane at each entrance and exit, function type of each lane, type and width of central isolation strip, zebra crossing, pedestrian crossing safety island, right-turn channelized type, non-motor vehicle lane, etc.
S2: according to the intersection information set in the step S2, setting a starting intersection and an ending intersection of the road section, a green belt width, a lane number and a lane width on the road section generating module, and drawing the road section between the two intersections on the electronic map, thereby realizing the generation of the road section map by using the road section generating module; and the trend, the bending degree and the like of the road section can be manually adjusted to be in line with the reality.
S3: the method comprises the steps that a road network generation and display module is utilized to count all relationships between intersections and road sections, intersection canalization graphs and road section relationship graphs are drawn on an electronic map according to longitude and latitude information, finally, a road network is formed, and a simulation road network is displayed on the electronic map in a map layer mode;
s4: and converting the road network data created in the steps S1-S3 into a road network data format required by simulation software by using a simulation road network export module, and writing the road network data into a simulation road network file to realize the rapid creation of the simulation road network.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A system for quickly creating a simulation road network is characterized in that: the system comprises an intersection channelizing generation module, a road section generation module, a road network generation and display module and a simulation road network export module;
the intersection canalization generating module generates an intersection canalization graph by using an intersection canalization drawing method according to the acquired intersection canalization data;
the road section generating module is used for setting a road section connection relation between two road sections according to the road section information generated by the road section canalization module, setting information of the road section such as the trend, the green belt and the lane, and logically connecting the two road sections into a road section so as to generate a road section map;
the road network generation and display module automatically creates a simulation road network according to the data of the intersection canalization generation module and the road section generation module and displays the simulation road network on the electronic map in a layer mode;
the simulation road network export module: and analyzing and converting the road network data generated by the three modules into a corresponding road network format according to the data format required by the simulation road network file, and writing the road network data into the simulation road network file, thereby realizing the rapid creation of the simulation road network.
2. The system for rapidly creating a simulated road network according to claim 1, wherein: the intersection channelizing generation module comprises a manual creation sub-module; the external import submodule imports intersection channelized data generated by other systems according to a specified format.
3. The system for rapidly creating a simulated road network according to claim 1, wherein: the intersection channelizing generation module also comprises an external import submodule;
the manual establishing sub-module can automatically generate an establishing intersection layer by positioning and selecting the intersection to be established on the electronic map, and enter and adjust the relevant parameters of intersection canalization on an intersection canalization information entry interface to enable the parameters to be matched with the intersection structure on the electronic map.
4. The system for rapidly creating a simulated road network according to claim 1, wherein: the intersection data information comprises: the system comprises a crossing name, an entrance and exit direction, the number of lanes at each entrance and exit, the width of each lane, the function type of each lane, the type and width of a central isolation strip, a zebra crossing, a pedestrian crossing safety island, a right-turn channelized type and a non-motor lane.
5. The system for rapidly creating a simulated road network according to claim 1, wherein: the simulation road network software comprises VISSIM, Caliper, Paramics and FLOWSIM.
6. A method for rapidly creating a simulation road network system based on any claim 1 to 5, wherein the method comprises the following steps: the method comprises the following steps:
s1: acquiring intersection canalization data, inputting an intersection canalization generation module, adjusting included angles of all entrances of an intersection and direction angles of the intersection to enable the intersection to meet actual conditions, and calculating coordinates of a plurality of elements including an entrance lane, a green belt and a zebra crossing in all directions according to the input intersection canalization data and longitude and latitude information and an intersection central point as a reference according to an intersection canalization drawing method for drawing an intersection canalization diagram;
s2: according to the intersection information set in the step S2, setting a starting intersection and an ending intersection of the road section, a green belt width, a lane number and a lane width on the road section generating module, and drawing the road section between the two intersections on the electronic map, thereby realizing the generation of the road section map by using the road section generating module;
s3: the method comprises the steps that a road network generation and display module is utilized to count all relationships between intersections and road sections, intersection canalization graphs and road section relationship graphs are drawn on an electronic map according to longitude and latitude information, finally, a road network is formed, and a simulation road network is displayed on the electronic map in a map layer mode;
s4: and converting the road network data created in the steps S1-S3 into a road network data format required by simulation software by using a simulation road network export module, and writing the road network data into a simulation road network file to realize the rapid creation of the simulation road network.
7. The method for quickly creating a simulated road network according to claim 6, wherein: step S1, the intersection channelized data and the road segment data may be obtained by combining the GIS data of the city, the internet aerial photograph and the street view map or from the actual intersection.
8. The method for quickly creating a simulated road network according to claim 6, wherein: step S1, intersection canalization data and road section data can be collected through a traffic flow detector, which specifically comprises geomagnetic detectors, coils, microwaves and video detectors.
9. The method for quickly creating a simulated road network according to claim 6, wherein: step S4, converting road network data into road network data format required by simulation software, specifically, converting intersection canalization structure into a set composed of multiple turning road sections and road section connectors, dividing the intersection into several parts of each direction inlet, each direction outlet and central turning area, wherein each direction outlet and each direction inlet can be directly used as road sections to be converted into simulation road network data; the central steering area judges the driving path of the vehicle according to the steering type of the entrance lane in a certain direction, establishes the connection relation between the entrance lane in the current direction and the exit lanes in other directions, forms a road connector, and exports the converted data to a simulation road network file according to a road network data format, so that the rapid establishment is realized.
10. A readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the method for quickly creating a simulated road network according to any one of claims 7 to 9.
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