Single-intersection simulation signal scheme generation method based on guiding process

Abstract

The invention discloses a method for generating a single-intersection simulation signal scheme based on a guiding process. The method comprises the following steps: establishing an intersection road network model; selecting an intersection which needs to be subjected to signal timing simulation; setting parameters of a signal control machine; confirming direction positioning of an intersection entrance lane; matching the lane numbers; inputting basic data of a signal timing scheme; setting and selecting a phase; adjusting the phase sequence as required; and finishing setting and storing. According to the invention, the user is guided to complete the setting of the signal scheme step by step through ordered steps, so that the systematicness and integrity of the design are improved. Therefore, even a user who does not deeply understand traffic signal control can conveniently complete setting of a signal scheme, and the professionalism of traffic simulation software operation is reduced. A user can flexibly adjust various parameters according to actual requirements and traffic conditions, the operation mode of phase and lane matching is optimized, and the probability of matching errors is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of urban traffic control, and in particular relates to a method for generating a single intersection simulation signal scheme based on a guidance process. Background Art

[0002] With the continuous development of the modernization process, the urban motor vehicle ownership data has reached a new high. According to statistics, the national motor vehicle ownership will reach 435 million in 2023. A large number of vehicles have affected the daily traffic of urban residents and increased the incidence of road traffic accidents. Therefore, in order to study traffic behavior, explore the changing laws of traffic flow movement over time and space, and analyze road traffic conditions more scientifically, people have introduced micro-traffic simulation software. The software simulates the operating status of traffic participants such as vehicles, pedestrians and traffic lights by establishing a mathematical model of the traffic operation system. In this way, quantitative traffic operation index data can be obtained, and scientific data support can be provided for decision-making means such as road network design plans, traffic scheduling plans, and signal control plans, so as to ultimately achieve the purpose of optimizing traffic flow operation, improving road network transportation efficiency, and improving road traffic safety.

[0003] In order to optimize the control efficiency of signal control schemes, more and more practitioners use micro-traffic simulation software to simulate intersection signal control. By inputting data such as road network information, signal timing, traffic flow and vehicle operation information into the software, the movement of vehicles when passing through intersections is simulated, and indicators such as queue length, number of queues, delay time and intersection passing time are used to evaluate whether the timing scheme needs to be optimized. Therefore, quickly generating intersection simulation signal schemes and providing a simpler and more efficient operation process for the operation evaluation of traffic simulation systems have become an optimization direction for micro-traffic simulation software.

[0004] In the existing technology, most simulation software requires a strong professional background in traffic and an understanding of the principle of signal timing, which greatly raises the threshold for software timing operation. The signal timing operation of most mainstream simulation software is relatively complex and has many steps. Users are required to switch operations in multiple different areas such as the toolbar, menu bar, pop-up window, and software operation interface, and there is a lack of operation guidance. Users need to spend a lot of time learning software operations. Summary of the invention

[0005] The purpose of the present invention is to provide a method for generating a single intersection simulation signal scheme based on a guidance process, so as to solve the problems in the prior art proposed in the background technology that the simulation software requires a strong traffic professional background, raises the threshold of software timing operation, and the signal timing operation is relatively complex and has many steps.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A method for generating a single intersection simulation signal scheme based on a guidance process comprises the following steps:

[0008] Step S1, establishing an intersection road network model;

[0009] Step S2, select the intersection where the signal timing simulation is required, and establish a signal controller at the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0010] Step S3, set the signal control machine parameters, select the signal control scheme under the control machine and determine whether to confirm and save. If yes, proceed to the next step, otherwise, modify it;

[0011] Step S4, confirm the direction of the entrance road of the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0012] Step S5, matching the lane number; and judging whether to confirm and save, if yes, proceed to the next step, if no, modify;

[0013] Step S6, input the basic data of the signal timing plan; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0014] Step S7, set and select the phase, add the required number of phases according to user needs and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0015] Step S8, adjust the phase sequence; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; complete the setting.

[0016] According to the above technical solution, in step S1, the specific process of establishing the intersection road network model in the software is as follows:

[0017] The user draws a road in the software, and drags the waypoints of one road with the mouse and places them on the lanes of another road. An intersection will be formed at the intersection. The user can modify the number of lanes, lane driving direction, and entrance channelization of the road by modifying the road attributes.

[0018] According to the above technical solution, in step S1, the specific process of adding a signal controller at the selected intersection is as follows:

[0019] The user selects the signal controller function module in the software, clicks on the intersection that needs to be timed, and a pop-up window for adding a signal controller pops up. The user enters the controller name and confirms to proceed to the next step.

[0020] According to the above technical solution, in step S3, selecting the signal control scheme under the control machine includes selecting the activation and end time of the control machine and confirming the light color of the special signal control scheme.

[0021] According to the above technical solution, in step S3, the specific process of setting basic parameters in the signal controller is as follows:

[0022] Step S301, in the timing interface, the overall layout is a lane direction diagram of the intersection, and the operation area is displayed on the right;

[0023] Step S302, generating a signal control scheme 1 by default;

[0024] Step S303, input the start and end time of the scheme to confirm the running time of the scheme; if no input is made, the simulation will be enabled throughout the whole process;

[0025] Step S304, the user can modify the scheme name;

[0026] Step S305, selection of special control modes, including full red time, flashing light color, etc.;

[0027] Step S306, confirm, and proceed to step S4.

[0028] According to the above technical solution, in step S4, the direction positioning of the selected intersection is confirmed as follows:

[0029] Step S401, when entering the timing interface, the intersection is arranged according to the directions of north up, south down, west left, and east right, and the page displays a compass;

[0030] Step S402, the directions of the entrance road are divided into north, northeast, east, southeast, south, southwest, west, and northwest;

[0031] Step S403, according to the calibrated direction positioning, the direction corresponding to each entrance road of the intersection is marked at the entrance road position;

[0032] Step S404, confirm, and proceed to step S5.

[0033] According to the above technical solution, in step S5, the matching of lane numbers is confirmed as follows:

[0034] Step S501, select a lane number matching scheme, start from the north direction and rotate clockwise, passing through each road section in turn; define the lane number according to the sequence and lane position information.

[0035] In step S502, the overall order must be the entrance road first, then the exit road, and finally the crosswalk.

[0036] Step S503, confirm, and proceed to step S6.

[0037] According to the above technical solution, in step S7, the phase is set and selected as follows:

[0038] Step S701, adding the required number of phases according to the signal timing plan;

[0039] Step S702, selecting a corresponding direction in the phase information according to the entrance road direction and the vehicle flow direction of the phase;

[0040] Step S703, modifying the data of the phase according to the green light start time and green light duration of the phase.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention guides users to gradually complete the setting of the signal scheme through orderly steps, ensuring that no link is missed, and improving the systematicness and integrity of the design. Through clear guidance steps and feedback mechanisms, even users who do not have a deep understanding of traffic signal control can easily complete the setting of the signal scheme, reducing the professionalism of the operation of traffic simulation software. Users can flexibly adjust various parameters according to actual needs and traffic conditions, such as phase setting and phase sequence adjustment, to ensure that the generated signal scheme can effectively cope with different traffic flow conditions, optimize the operation mode of phase and lane matching, and reduce the probability of matching errors. Through a reasonable signal timing plan, it is possible to effectively optimize traffic flow, reduce traffic congestion, improve the traffic efficiency of intersections, and ensure traffic safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A flow chart of a method for generating a simulation signal scheme according to the present invention;

[0044] Figure 2 A schematic diagram of modeling an intersection of the present invention;

[0045] Figure 3 A schematic diagram of a signal control machine is established for the present invention;

[0046] Figure 4 A signal control machine parameter configuration diagram is provided for the present invention;

[0047] Figure 5 It is the intersection direction positioning and lane matching map of the present invention;

[0048] Figure 6 It is a phase setting diagram of the present invention;

[0049] Figure 7 This is the intersection direction positioning and lane matching diagram of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Embodiment 1

[0052] like Figure 1 As shown, a method for generating a single intersection simulation signal scheme based on a guidance process is characterized in that it includes the following steps:

[0053] Step S1, establishing an intersection road network model;

[0054] Step S2, select the intersection where the signal timing simulation is required, and establish a signal controller at the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0055] Step S3, set the signal control machine parameters, select the signal control scheme under the control machine and determine whether to confirm and save. If yes, proceed to the next step, otherwise, modify it;

[0056] Step S4, confirm the direction of the entrance road of the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0057] Step S5, matching the lane number; and judging whether to confirm and save, if yes, proceed to the next step, if no, modify;

[0058] Step S6, input the basic data of the signal timing plan; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0059] Step S7, set and select the phase, add the required number of phases according to user needs and determine whether to confirm and save, if yes, proceed to the next step, if not, modify;

[0060] Step S8, adjust the phase sequence; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; complete the setting.

[0061] The present invention guides users to gradually complete the setting of the signal scheme through orderly steps, ensuring that no link is missed, and improving the systematicness and integrity of the design. Through clear guidance steps and feedback mechanisms, even users who do not have a deep understanding of traffic signal control can easily complete the setting of the signal scheme, reducing the professionalism of the operation of traffic simulation software. Users can flexibly adjust various parameters according to actual needs and traffic conditions, such as phase setting and phase sequence adjustment, to ensure that the generated signal scheme can effectively cope with different traffic flow conditions, optimize the operation mode of phase and lane matching, and reduce the probability of matching errors. Through a reasonable signal timing plan, it is possible to effectively optimize traffic flow, reduce traffic congestion, improve the traffic efficiency of intersections, and ensure traffic safety.

[0062] Embodiment 2

[0063] This embodiment is a further refinement of the first embodiment.

[0064] Preferably, in step S1, the specific process of establishing the intersection network model in the software is as follows:

[0065] like Figure 2 As shown in the figure, the user draws a road in the software, and drags the waypoints of one road and places them on the lanes of another road by dragging the waypoints with the mouse, and an intersection is automatically formed at the intersection. The user can modify the number of lanes, lane driving direction, entrance channelization and other settings of the road by modifying the road attributes.

[0066] Preferably, the specific process of step S2, adding a signal controller at the selected intersection is as follows:

[0067] like Figure 3 As shown, the user selects the signal controller function module in the software, right-clicks the intersection that needs to be timed, and a pop-up window for adding a signal controller pops up. The user enters the controller name and confirms to proceed to the next step.

[0068] Preferably, after completing the setting of step S2, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0069] Preferably, step S3, setting basic parameters in the selected signal controller is as follows:

[0070] like Figure 4 As shown, 1. In the timing interface, the overall layout is a lane direction map of the intersection, and the operation area is displayed on the right.

[0071] 2. The default signal control scheme is 1.

[0072] 3. Enter the start and end time of the plan to confirm the running time of the plan; if no entry is made, the simulation will be enabled throughout the entire process.

[0073] 4. Users can modify the scheme name.

[0074] 5. Selection of special control methods, including all-red time, flashing light color, etc.

[0075] 6. Confirm and proceed to the next step.

[0076] Preferably, after completing the setting of step S3, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0077] Preferably, in step S4, the direction positioning of the selected intersection is confirmed as follows:

[0078] 1. When entering the timing interface, the intersections are arranged according to the directions of north at the top, south at the bottom, west at the left, and east at the right, and a compass is displayed on the page.

[0079] 2. According to the Public Security Industry Standard GA / T1049.2-2013 of the People's Republic of China, the directions of the entrance roads are divided into north, northeast, east, southeast, south, southwest, west and northwest.

[0080] 3. Based on the calibrated direction positioning, the software automatically marks the directions corresponding to each entrance road of the intersection at the entrance road position.

[0081] 4. Confirm and proceed to the next step.

[0082] Preferably, after completing the setting of step S4, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0083] Preferably, in step S5, the situation of confirming the lane number matching is as follows:

[0084] like Figure 5 As shown, 1. Select a lane number matching scheme, such as starting from the north and rotating clockwise, passing through each road section in turn; define the lane number according to the sequence, lane position and other information.

[0085] 2. The overall order must be entrance road first, then exit road, and finally pedestrian crossing.

[0086] 3. Confirm and proceed to the next step.

[0087] When the matching scheme is to rotate clockwise from the north and increase the lane number from the outside to the inside, the outermost lane of the north entrance is numbered 0, and increases by 1 towards the central dividing strip; the east entrance continues the numbering of the north entrance and increases by 1. Then the exit lanes and crosswalks are numbered in order of direction.

[0088] Preferably, after completing the setting of S5, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0089] Preferably, in step S6, the basic data of the input signal timing scheme is as follows:

[0090] The user enters the control cycle duration data based on his / her personal information.

[0091] Preferably, after completing the setting of step S6, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0092] Preferably, in step S7, the phase is set and selected as follows:

[0093] like Figure 6 As shown, 1. Add the required number of phases according to the signal timing plan.

[0094] 2. According to the entrance lane direction and the traffic flow direction of the phase, select the corresponding direction in the phase information.

[0095] 3. Modify the data of the phase according to the green light start time and green light duration of the phase.

[0096] Preferably, after completing the setting of S7, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0097] Preferably, in step S8, the phase sequence is adjusted as required as follows:

[0098] like Figure 7 As shown, the user can adjust the phase sequence as needed based on the known signal timing scheme. Click the up and down arrows after the phase to increase the order of the phase in the signal control scheme.

[0099] Preferably, after completing the setting of S8, the user chooses whether to confirm and save, and if so, proceeds to the next step, and if not, returns to the previous step to make changes.

[0100] Preferably, after the user confirms that all the previous steps have been completed, the user clicks OK to save the signal timing plan, thereby completing the signal timing setting for the intersection.

[0101] In the present invention, the generation of simulated intersection signal schemes is performed based on the guidance process, which reduces the possibility of missed operations and wrong operations. The operation interface of the simulated intersection signal scheme is optimized to improve the operation efficiency. The default direction of the intersection is defined, and the phase setting can be directly selected according to the entrance lane direction and the vehicle flow movement direction. The possibility of lane and phase mismatch is reduced, and the operation efficiency is improved.

[0102] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0103] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for generating a single intersection simulation signal scheme based on a guidance process, characterized in that: The following steps are involved: Step S1, establishing an intersection road network model; Step S2, select the intersection where the signal timing simulation is required, and establish a signal controller at the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; Step S3, set the signal control machine parameters, select the signal control scheme under the control machine and determine whether to confirm and save. If yes, proceed to the next step, otherwise, modify it; Step S4, confirm the direction of the entrance road of the intersection; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; Step S5, matching the lane number; and judging whether to confirm and save, if yes, proceed to the next step, if no, modify; Step S6, input the basic data of the signal timing plan; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; Step S7, set and select the phase, add the required number of phases according to user needs and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; Step S8, adjust the phase sequence; and determine whether to confirm and save, if yes, proceed to the next step, if not, modify; complete the setting.

2. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S1, the specific process of establishing the intersection network model in the software is as follows: The user draws a road in the software, and drags the waypoints of one road with the mouse and places them on the lanes of another road. An intersection will be formed at the intersection. The user can modify the number of lanes, lane driving direction, and entrance channelization of the road by modifying the road attributes.

3. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S1, the specific process of adding a signal controller at the selected intersection is as follows: The user selects the signal controller function module in the software, clicks on the intersection that needs to be timed, and a pop-up window for adding a signal controller pops up. The user enters the controller name and confirms to proceed to the next step.

4. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S3, selecting the signal control scheme under the control machine includes selecting the activation and end time of the control machine and confirming the light color of the special signal control scheme.

5. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 4, characterized in that: In step S3, the specific process of setting basic parameters in the signal controller is as follows: Step S301, in the timing interface, the overall layout is a lane direction diagram of the intersection, and the operation area is displayed on the right; Step S302, generating a signal control scheme 1 by default; Step S303, input the start and end time of the scheme to confirm the running time of the scheme; if no input is made, the simulation will be enabled throughout the whole process; Step S304, the user can modify the scheme name; Step S305, selection of special control modes, including full red time, flashing light color, etc.; Step S306, confirm, and proceed to step S4.

6. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S4, the direction positioning of the selected intersection is confirmed as follows: Step S401, when entering the timing interface, the intersection is arranged according to the directions of north up, south down, west left, and east right, and the page displays a compass; Step S402, the directions of the entrance road are divided into north, northeast, east, southeast, south, southwest, west, and northwest; Step S403, according to the calibrated direction positioning, the direction corresponding to each entrance road of the intersection is marked at the entrance road position; Step S404, confirm, and proceed to step S5.

7. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S5, the lane number matching is confirmed as follows: Step S501, select a lane number matching scheme, start from the north direction and rotate clockwise, passing through each road section in turn; define the lane number according to the sequence and lane position information. In step S502, the overall order must be the entrance road first, then the exit road, and finally the crosswalk. Step S503, confirm, and proceed to step S6.

8. The method for generating a single intersection simulation signal scheme based on a guidance process according to claim 1, characterized in that: In step S7, the phase is set and selected as follows: Step S701, adding the required number of phases according to the signal timing plan; Step S702, selecting a corresponding direction in the phase information according to the entrance road direction and the vehicle flow direction of the phase; Step S703, modifying the data of the phase according to the green light start time and green light duration of the phase.

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