Intersection phase sequence configuration method, device, equipment and medium

Abstract

The invention discloses a phase and phase sequence configuration method and device of an intersection, equipment and a medium. The method comprises the following steps: matching lane channelization and / or lamp bank information with a preset judgment condition, and judging the traffic flow direction type of each entrance; determining a release sequence of each barrier unit based on the lane flow; based on the lane channelization and the lane flow, calculating the lane flow similarity between different turning lanes of each entrance; according to the lane channelization and the lane saturation flow, the minimum number of green passing vehicles of each lane is obtained; based on the lane channelization and the congestion delay index, the congestion state of the entrance is judged; when the traffic flow direction types of the opposite entrances in the barrier units are all left straight independent release, the phase sequence of the barrier units is set based on the lane flow similarity; otherwise, the phase sequence of the barrier unit is set according to the lane saturation flow, the minimum number of vehicles capable of passing through the green and the entrance congestion state; and combining the release sequence and the phase sequence of each barrier unit to obtain the phase sequence of the used intersection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent transportation, and in particular to a phase sequence configuration method and device for an intersection, an intersection phase sequence configuration apparatus, an intersection phase sequence configuration device, and a medium. BACKGROUND

[0002] In recent years, with the continuous growth of the number of vehicles in cities, the safe and efficient traffic of urban road intersections has received more and more attention. Among them, the signal control of the intersection is the most direct means to ensure the safe and efficient traffic of the intersection, and making a reasonable and effective signal timing plan is the most basic link of signal control. When the traffic police at various places make a signal timing plan, they need to consider the phase sequence configuration scheme of the intersection.

[0003] However, when configuring the phase sequence of the intersection, on the one hand, the configuration is made according to the experience of the person, and the cycle of making the scheme is long and the effect is uneven. On the other hand, the configuration is made by selecting a template in a preset phase template according to the lane flow, and the factors considered when selecting the template are too single, so that the selected template is not accurate. Therefore, the existing phase sequence configuration scheme is unreasonable, which makes the signal timing plan based on the phase sequence of the intersection inefficient, easy to cause congestion of vehicles at the intersection, and even cause traffic accidents.

[0004] Therefore, it is urgent to provide a reasonable and effective phase sequence configuration scheme to minimize conflicts and maximize efficiency, improve the efficiency and quality of the signal timing plan, and ensure the safe and efficient traffic of vehicles at the intersection. SUMMARY

[0005] The embodiments of the present application provide a phase sequence configuration method, device, equipment and medium for an intersection, to solve the problem that the existing phase sequence configuration scheme is unreasonable, which makes the signal timing plan based on the phase sequence of the intersection inefficient.

[0006] In a first aspect, the present application provides a phase sequence configuration method for an intersection, the method comprising:

[0007] When it is determined that the intersection is a used intersection, obtaining lane channelization, light group information and traffic information of the intersection, the traffic information including lane flow, lane saturation flow and congestion delay index;

[0008] Matching the lane channelization and / or the light group information with a preset judgment condition to determine the type of traffic flow direction of each entrance in the intersection; determining the release order of each barrier unit in the intersection based on the lane flow, the barrier unit including opposite entrances;

[0009] calculate lane flow similarity between different turning lanes of each import based on the lane channelization and the lane flow; obtain minimum green passable vehicle number of each lane according to the lane channelization and the lane saturated flow; determine import congestion state of each import based on the lane channelization and the congestion delay index;

[0010] when the traffic flow direction type of the barrier unit is left straight alone, compare the lane flow similarity with the similarity threshold value, and set the phase sequence of the barrier unit; when the traffic flow direction type of any import in the barrier unit is left straight simultaneous release, use the first comparison result of the lane saturated flow and the saturated flow threshold value, the second comparison result of the lane flow and the minimum green passable vehicle number, and the import congestion state to set the phase sequence of the barrier unit;

[0011] combine the release order and the phase sequence of each barrier unit in the intersection to obtain the phase sequence of the intersection.

[0012] In a second aspect, the present application provides a phase sequence configuration device of an intersection, the device comprising:

[0013] an information acquisition module, configured to acquire lane channelization, light group information and traffic information of the intersection when the intersection is a used intersection, wherein the traffic information comprises lane flow, lane saturated flow and congestion delay index;

[0014] a judgment module, configured to match the lane channelization and / or the light group information with a preset judgment condition, and determine traffic flow direction type of each import in the intersection;

[0015] a barrier order determination module, configured to determine release order of each barrier unit in the intersection based on the lane flow, wherein the barrier unit comprises opposite import;

[0016] a parameter determination module, configured to calculate lane flow similarity between different turning lanes of each import based on the lane channelization and the lane flow; obtain minimum green passable vehicle number of each lane according to the lane channelization and the lane saturated flow; determine import congestion state of each import based on the lane channelization and the congestion delay index;

[0017] The phase sequence configuration module is configured to compare the lane flow similarity and the similarity threshold value when the vehicle flow direction type of each entrance in the barrier unit is left straight alone, and set the phase sequence of the barrier unit; and when the vehicle flow direction type of any entrance in the barrier unit is left straight simultaneous release, set the phase sequence of the barrier unit by using a first comparison result of the lane saturation flow and the saturation flow threshold value, a second comparison result of the lane flow and the minimum green number of passable vehicles, and the entrance congestion state.

[0018] The phase sequence determination module is configured to combine the release order of each barrier unit in the intersection and the phase sequence to obtain the phase sequence of the intersection.

[0019] In a third aspect, the present application also provides an electronic device, which comprises a processor configured to implement the steps of the phase sequence configuration method of the intersection according to any one of the above aspects when executing a computer program stored in a memory.

[0020] In a fourth aspect, the present application also provides a computer readable storage medium storing a computer program, which is configured to implement the steps of the phase sequence configuration method of the intersection according to any one of the above aspects when executed by a processor.

[0021] In a fifth aspect, the present application provides a computer program product comprising a computer program, which is configured to implement the phase sequence configuration method of the intersection according to the first aspect when executed by a processor.

[0022] The technical solutions provided by the embodiments of the present application at least have the following beneficial effects:

[0023] In the embodiments of the present application, the traffic evaluation parameters such as the vehicle flow direction type of each entrance in the intersection, the release order of each barrier unit, the lane flow similarity between different turning lanes of each entrance, the minimum green number of passable vehicles of each lane, and the entrance congestion state of each entrance are calculated by using the lane channelization, light group information, lane flow, lane saturation flow, congestion delay index, and other information, and the phase sequence of the intersection is configured according to the traffic evaluation parameters and the preset traffic evaluation parameter threshold value. Compared with the single factor used in the prior art, the phase sequence configuration scheme obtained is more reasonable, and the efficiency and quality of the signal timing scheme determined based on the phase sequence configuration scheme are improved, so that the vehicles passing through the intersection are safer and more efficient.

[0024] Other features and advantages of the present application will be described in the following description and become apparent from the description, or be learned from the practice of the present application. The purposes and other advantages of the present application can be achieved and obtained by the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0026] Figure 1 A flowchart illustrating a phase sequence configuration method for an intersection provided in an embodiment of this application;

[0027] Figure 2 A schematic flowchart illustrating a lane flow acquisition method provided in an embodiment of this application;

[0028] Figure 3 A schematic diagram of a phase sequence combination provided in an embodiment of this application;

[0029] Figure 4 A schematic diagram of a phase sequence combination provided in an embodiment of this application;

[0030] Figure 5 A schematic diagram of a phase sequence combination provided in an embodiment of this application;

[0031] Figure 6 A schematic diagram of a phase sequence combination provided in an embodiment of this application;

[0032] Figure 7 A schematic diagram of the overall process of a phase sequence configuration method for an existing intersection provided in this application embodiment;

[0033] Figure 8 A flowchart illustrating a method for configuring the phase sequence of a pedestrian walkway, as provided in an embodiment of this application;

[0034] Figure 9 A schematic diagram of a phase sequence combination provided in an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the overall process of a pedestrian walkway phase sequence configuration method provided in an embodiment of this application;

[0036] Figure 11 A flowchart illustrating a method for configuring phase sequence at a newly constructed intersection, as provided in an embodiment of this application;

[0037] Figure 12 A schematic diagram of a phase sequence configuration device for an intersection provided in an embodiment of this application;

[0038] Figure 13 This is a schematic diagram of an electronic device structure provided in an embodiment of this application. Detailed Implementation

[0039] In order to make the purposes, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0040] It should be noted that the terms "comprising" and "having" and their conjugates involved in the present application are intended to cover the inclusion, not the exclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] The terms "first", "second" in the specification are only for descriptive purposes, and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] The word "exemplary" used in the following means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" is not necessarily interpreted as superior or better than other embodiments.

[0043] In recent years, with the continuous growth of the number of vehicles in cities, the safe and efficient passing of urban road intersections has been paid more and more attention. Among them, the signal control of the intersection is the most direct means to ensure the safe and efficient passing of vehicles at the intersection, and making a reasonable and effective signal timing plan is the most basic link of signal control. When the traffic police make a signal timing plan, they need to consider the phase sequence configuration scheme of the intersection.

[0044] However, at present, when configuring the phase sequence of the intersection, on the one hand, it is configured according to artificial experience, and the cycle of the scheme is long and the effect is uneven. On the other hand, according to the lane flow, a template is selected from the preset phase template for configuration, and the factors considered when selecting the template are too single, so that the selected template is not accurate. Therefore, the existing phase sequence configuration scheme is unreasonable, so that the signal timing plan based on the phase sequence of the intersection is not efficient, which easily causes congestion of vehicles at the intersection, and even causes traffic accidents.

[0045] Therefore, it is urgent to provide a reasonable and effective phase sequence configuration scheme to minimize conflicts and maximize efficiency, improve the efficiency and quality of the signal light timing scheme, and ensure the safe and efficient traffic of vehicles at the intersection. In view of this, the present application provides a phase sequence configuration method, device, equipment and medium for an intersection, to solve the problem that the existing phase sequence configuration scheme is unreasonable, and the signal light timing scheme based on the phase sequence of the intersection is not efficient.

[0046] The inventive concept of the embodiments of the present application can be summarized as follows:

[0047] For a newly built intersection, the lane channelization and light group information of the intersection are acquired to determine the traffic direction type, and then the phase sequence of the lane is determined according to the traffic direction type and the number of lanes in each barrier unit of the intersection, with the optimization target of zero intersection conflict, minimum opposite conflict, minimum split conflict, and minimum outlet flow conflict.

[0048] For an existing intersection, the phase sequence of the lane is optimized by acquiring the lane channelization, light group information, lane flow, lane saturation flow, congestion delay index and other data of the intersection provided by the electric police, detector, Internet and the like, and preprocessing the historical data of at least one month, calculating the traffic direction type, lane flow similarity, minimum green vehicle number that pedestrians can pass, and import congestion state evaluation parameters, and using the evaluation parameters.

[0049] For a sidewalk, the point data on the map information is acquired to determine the dense demand period of pedestrians, such as the "school drop-off period", and then the phase sequence scheme of the lane in the dense demand period of pedestrians is optimized based on the traffic direction type, and the phase sequence of the sidewalk is determined based on the phase sequence of the lane and the preset pedestrian-lane phase combination, so that the sidewalk phase follows the conflict-free lane phase and is combined and released at the same time.

[0050] The phase sequence configuration method for an intersection provided by the present application is applied to an electronic device, which can be a PC, a mobile terminal, a server, etc. The phase sequence configuration method for an intersection provided by the present application can be applied to a distributed software platform represented by a blockchain.

[0051] To further illustrate the technical solutions provided by the embodiments of the present application, the following will describe in detail with reference to the drawings and specific embodiments. Although the embodiments of the present application provide the method operation steps as described in the following embodiments or shown in the drawings, more or fewer operation steps can be included in the method based on conventional or non-creative labor. The execution order of these steps is not limited to the execution order provided by the embodiments of the present application.

[0052] Referring toFigure 1 A flowchart of a phase sequence configuration method for a junction in an embodiment of the present application is shown in the figure. The method can be implemented as the steps shown in the figure. Figure 1

[0053] In step S101, when it is determined that the junction is a used junction, the lane channelization, light group information and traffic information of the junction are obtained. The traffic information includes lane flow, lane saturated flow and congestion delay index.

[0054] The lane channelization and light group information of the junction are set and recorded when the junction is planned, for example, traffic signs, markings and traffic islands are set for the junction.

[0055] Some devices are usually placed at the traffic junction, such as junction geomagnetic, coil detector, radar, edge computing detection device, etc. The traffic information in the historical time interval can be collected through these devices, and then the signal machine accesses these devices to obtain the lane flow, lane saturated flow and link travel time of each lane of the junction in the historical time interval.

[0056] The central signal control system accesses the electric police vehicle, portal equipment and other devices to obtain the lane flow in the last one month, filter the effective data, calculate the lane saturated flow, access the Internet data to filter the effective link section, and obtain the link travel time data in the last one month. The map information can also be accessed to obtain the point data of target buildings such as schools, hospitals, scenic spots and business circles.

[0057] In the present application, the central signal control system needs to process the obtained data after obtaining the data, and filter out invalid data. The specific implementation can be as follows:

[0058] Lane flow: if the lane flow of the current lane is 1 or abnormally large all day, it is considered that the lane flow of the current lane today is invalid; if the lane flow of each day in the historical time interval is invalid, it is considered that there is no valid data in the historical time interval.

[0059] In specific implementation, it is necessary to determine the valid data to eliminate abnormal lane flow under the condition of abnormality and interference, for example, 5-minute lane flow ≥100 vehicles, at this time, the lane flow is greater than the maximum value of 5-minute lane flow, and it is considered that the lane flow is abnormally large, and the data needs to be eliminated. The maximum value of 5-minute lane flow is calculated according to the saturated headway. For example, the lane flow during the day period 6:00-22:00 is 0, which is considered to be manually controlled, and the lane is not released during the statistical time interval, and the data is eliminated.

[0060] ​Lane saturated flow: in the lane with detector, if the lane flow of the current lane is 0 all day, it is considered that there is no effective data on the day, if the lane flow of the current lane is 0 continuously for more than 30 minutes, it is considered that there is no effective data in the current period, if there is no effective data in the historical length, it is considered that there is no effective data in the current lane in the historical length.

[0061] Link travel time: link travel time is obtained every half hour, according to the principle of 3δ, if the link travel time x i satisfies , x i is a valid value. Wherein is the mean value obtained after a large number of experiments.

[0062] In this application, the data obtained is processed, and after invalid data is screened out, the data in the historical length is statistically summarized to obtain the traffic information of the intersection, i.e. lane flow, lane saturated flow and congestion delay index.

[0063] Among them, the lane flow of the intersection is obtained in the manner as shown in Figure 2 .

[0064] In step 201, the lane flow of the intersection in the historical length is obtained.

[0065] In step 202, for each lane of the intersection, the flow of the lane in the scheduling period in the historical length is sorted in ascending order to obtain a sorting result.

[0066] In step 203, the flow in the preset threshold range in the sorting result is taken as the lane flow of the lane.

[0067] For example, the flow of the current lane in the scheduling period in the historical length is sorted in ascending order, and the flow value at the 85th position in the sorting result is taken as the lane flow of the current lane, which can meet the traffic flow demand of at least 85%.

[0068] Among them, the lane saturated flow of the intersection is determined in the following manner:

[0069] For each lane of the intersection, the lane saturated flow of the lane in the historical length is averaged to obtain the lane saturated flow of the lane.

[0070] For example, the lane saturated flow of the current lane in the historical length is calculated after invalid data is removed, and the lane saturated flow of a single lane is obtained. If it is not calculated, the configured lane saturated flow threshold is taken as the lane saturated flow of the current lane. For example, the lane saturated flow threshold of the straight lane is 1600 vehicles / hour by default, and the lane saturated flow threshold of the left turn lane is 1500 vehicles / hour by default.

[0071] The congestion delay index of the intersection is determined according to the following manner:

[0072] For each lane of the intersection, the link travel time of the lane in the historical time length is averaged to obtain the travel time of the lane; the link travel time of the lane in the historical time length is sorted to obtain the free flow travel time; and the ratio of the travel time to the free flow travel time is taken as the congestion delay index of the lane.

[0073] For example, after obtaining the effective data, the average of the link travel time of the lane in the historical time length is calculated as the travel time of the current link; then the average of the historical time length in the daytime period 6:00-22:00 is obtained, and sorted from large to small, and then the 15th percentile value of the sorting result is taken as the free flow travel time of the current lane, and then the ratio of the travel time to the free flow travel time is taken as the congestion delay index of the current lane.

[0074] Thus, the data processing and statistical summary can be obtained to obtain the traffic information of the intersection.

[0075] In step S102, the lane channelization and / or light group information is matched with the preset judgment condition to judge the traffic direction type of each entrance of the intersection.

[0076] In one possible implementation, when the lane channelization and / or light group information is matched with the preset judgment condition to judge the traffic direction type of each entrance of the intersection, the following operations are performed for each entrance:

[0077] If the entrance is identified to include only an independent left-turn lane and an independent straight lane based on the lane channelization, and the entrance is identified to include only an independent left-turn light group and an independent straight light group based on the light group information, it is determined that the traffic direction type of the entrance is left-straight separate release;

[0078] If the entrance is identified to include a left-straight composite lane based on the lane channelization, and / or the entrance is identified to include only one light group based on the light group information, it is determined that the traffic direction type of the entrance is left-straight simultaneous release.

[0079] In the present application, the traffic direction type of the motor vehicle lane of one entrance direction mainly has left-straight separate release and left-straight simultaneous release, which can be determined by the lane channelization and / or light group information of the intersection to judge the traffic direction type adopted by the entrance direction:

[0080] If the lane channelization and the light group information both satisfy the following conditions, it is considered that the import direction has the requirement of left turn and straight separate release, and the vehicle flow direction type of the import is left straight separate release: the import only includes independent left turn lane and independent straight lane; the import only includes independent left turn light group and independent straight light group. That is, the two conditions must be met at the same time.

[0081] If the lane channelization or the light group information satisfies one of the following conditions, it is considered that the import direction does not have the requirement of left turn and straight separate release, and the vehicle flow direction type of the import is left straight simultaneous release: the import has left straight composite lane; there is only one light group, and the signal light points to left straight composite, and the light group form can be disc light or arrow light. That is, if any of the following conditions is met, the vehicle flow direction type of the import is left straight simultaneous release:

[0082] Condition 1, the import has left straight composite lane;

[0083] Condition 2, the import has only one light group;

[0084] Condition 3, the import has left straight composite lane, and the import has only one light group.

[0085] In step S103, the release order of each barrier unit in the intersection is determined based on the lane flow.

[0086] In the present application, the phase sequence of the lanes is combined according to different intersection shapes. The present application supports cross intersections, T-shaped intersections, ring-shaped intersections, and pedestrian secondary street crossing intersections.

[0087] Taking a cross intersection as an example, it is judged that there are four import motor vehicle light groups, and the intersection is considered to be a cross intersection. First, the intersection barrier is divided according to the opposite direction, and the opposite import is taken as a barrier unit; then the phase sequence under the barrier unit is generated according to the evaluation parameters of the lane, and the final phase sequence of the intersection is obtained in combination with the release order of each barrier unit in the intersection.

[0088] Among them, the barrier unit includes the opposite import. The south-north import is a barrier unit, and the east-west import is a barrier unit. A cross intersection has 2 barrier units.

[0089] In one possible implementation, the release order of each barrier unit in the intersection is determined based on the lane flow, which is executed as follows: the lane flow of all lanes in each barrier unit is sorted to determine the maximum lane flow of each barrier unit; the maximum lane flow of each barrier unit in the intersection is sorted in descending order to obtain a sorting result; and the sorting result is taken as the release order of each barrier unit in the intersection.

[0090] In other words, the release order of the barrier unit is arranged according to the maximum single lane flow under the barrier, and the larger the maximum lane flow is, the earlier it is placed.

[0091] Thus, the release order of each barrier unit in the intersection is obtained.

[0092] In step S104, the lane flow similarity between different turning lanes of each entrance is calculated based on the lane channelization and the lane flow; the minimum green light through vehicle number of each lane is obtained according to the lane channelization and the lane saturated flow; and the entrance congestion state of each entrance is judged based on the lane channelization and the congestion delay index.

[0093] In specific implementation, the calculation of the lane flow similarity between different turning lanes of each entrance based on the lane channelization and the lane flow is performed as follows: first, the left turning lanes and the straight lanes of the entrance are determined according to the lane channelization; then the maximum lane flow of the left turning lanes is determined according to the lane flow of each left turning lane; the maximum lane flow of the straight lanes is determined according to the lane flow of each straight lane; and finally, the lane flow similarity between different turning lanes of each entrance is calculated according to formula (1):

[0094]

[0095] wherein sim(θ) is the lane flow similarity between different turning lanes of the entrance; q l is the maximum lane flow of the straight lanes; q s is the maximum lane flow of the left turning lanes; and avg is the average value.

[0096] In specific implementation, the minimum green light through vehicle number of each lane is obtained according to the lane channelization and the lane saturated flow as follows: first, the number of lanes and the lane width of each turning of the entrance are determined according to the lane channelization; then the minimum green light time is determined according to the number of lanes and the lane width of each turning; and finally, the minimum green light through vehicle number of the lane is determined according to the minimum green light time and the lane saturated flow.

[0097] The minimum green light through vehicle number of the lane is calculated according to the following formula:

[0098] Minimum green light through vehicle number = minimum green light time x lane saturated flow / 3600.

[0099] wherein the minimum green light time = (lane width x number of lanes) / pedestrian walking speed. The lane width is 3.5 m by default if not configured, and the pedestrian walking speed is 1 m / s by default.

[0100] In specific implementation, the entrance congestion state of each entrance is judged based on the lane channelization and the congestion delay index as follows: each entrance of the intersection is determined according to the lane channelization; then the latest congestion delay index of each entrance is used; if the proportion of the time length during which the congestion delay index is greater than the index threshold value exceeds the time length threshold value, it is determined that the entrance congestion state of the entrance is congestion, otherwise it is determined that the entrance congestion state of the entrance is not congestion.

[0101] For example, the congestion state of the import is determined according to the latest link state of each import, and if the proportion of the congestion time length of the current link whose congestion delay index is greater than or equal to 1.8 (index threshold) is more than 30% (time length threshold), it is considered that the current import is in a congestion state; otherwise, it is considered that the current import is in an uncongestion state.

[0102] It should be noted that the execution order of steps S102, S103 and S104 in the present application is not sequential.

[0103] In step S105, when the vehicle flow direction type of each import in the barrier unit is left straight separate release, the lane flow similarity and the similarity threshold are compared, and the phase sequence of the barrier unit is set; when the vehicle flow direction type of any import in the barrier unit is left straight simultaneous release, the first comparison result of the lane saturation flow and the saturation flow threshold, the second comparison result of the lane flow and the minimum green number of through vehicles, and the import congestion state are used to set the phase sequence of the barrier unit.

[0104] Among them, the similarity threshold and the saturation flow threshold can be set according to actual needs.

[0105] In one possible implementation, when the vehicle flow direction type of each import in the barrier unit is left straight separate release, the lane flow similarity and the similarity threshold are compared, and the phase sequence of the barrier unit is set, which has the following two configuration methods:

[0106] Method one: if the lane flow similarity between different turning lanes of each import in the barrier unit is greater than the similarity threshold, the phase sequence of the barrier unit is single-port round release and prohibition of overlap.

[0107] When the demand of different turning lanes (mainly left turn and straight) of the same import is balanced, i.e. each import in the barrier unit respectively meets: the lane flow similarity between the left turn lane and the straight lane is greater than the similarity threshold, the phase sequence of the barrier unit is recommended to be "single-port round release + prohibition of overlap".

[0108] As shown in Figure 3 Fig. 1 is an example of phase sequence combination when the vehicle flow direction type of each import in the barrier unit is left straight separate release.

[0109] Among them, the barrier unit is a double-ring combination, and the phase sequence of the half-ring is "single-port round release":

[0110] When the barrier unit is south-north import, the two half-rings are: ring 1-southward phase (barrier first phase) + dummy phase, ring 2-dummy phase + northward phase, i.e. the south import is released first, and then the north import is released.

[0111] When the barrier unit is the east-west import, the two half-rings are respectively: ring 1-east phase (barrier first phase) + virtual phase, ring 2-virtual phase + west phase, that is, first put the east import, and then put the west import.

[0112] Among them, the barrier first phase is the phase with the largest lane flow or the phase with the largest number of lanes.

[0113] Method two: if the lane flow similarity between different turning lanes of any import in the barrier unit is not greater than the similarity threshold, the phase sequence of the barrier unit is symmetric release and allows to overlap.

[0114] When the demand of different turning lanes (mainly left turn and straight) in any import is not balanced, that is, the lane flow similarity between the left turn lane and the straight lane of any import in the barrier unit is not greater than the lane flow similarity of different turning lanes of any import, it is recommended that the phase sequence of the barrier unit is "symmetric release + allows to overlap".

[0115] As shown in Figure 4 , it is a phase sequence combination example two when the traffic direction type of the opposite import in the barrier unit is left straight separate release.

[0116] Among them, the barrier unit is a double ring combination, and the phase sequence of the half ring is "first release straight lane and then release left turn lane":

[0117] When the barrier unit is the south-north import, the two half-rings are respectively: ring 1-south straight + north left, ring 2-north straight + south left, that is, first release the straight lane of the south import and the straight lane of the north import, and then release the left turn lane of the north import and the left turn lane of the south import.

[0118] When the barrier unit is the east-west import, the two half-rings are respectively: ring 1-east straight + west left, ring 2-west straight + east left, that is, first release the straight lane of the east import and the straight lane of the west import, and then release the left turn lane of the west import and the left turn lane of the east import.

[0119] When at least one import must release straight and left turn at the same time due to lane conditions (composite lane) or light group (disc light) conditions in the opposite import, that is, when the traffic direction type of one import in the opposite import is left straight simultaneous release, and the traffic direction type of the other import is left straight separate release, it is determined that the traffic direction type of any import in the barrier unit is left straight simultaneous release.

[0120] In one possible implementation, when the traffic direction type of any import in the barrier unit is left straight simultaneous release, the first comparison result of the lane saturation flow and the saturation flow threshold, the second comparison result of the lane flow and the minimum green number of vehicles that can pass, and the import congestion state are used to set the phase sequence of the barrier unit, and there are the following three configuration modes:

[0121] Method 1: If the first comparison result is that the maximum lane saturation flow of each entrance in the barrier unit is less than the saturation flow threshold, and the second comparison result is that the maximum lane flow corresponding to any light group in the barrier unit is less than the minimum number of vehicles that can pass through the green light, then the phase sequence of the barrier unit is reverse mixed release.

[0122] During implementation, when the demand at both entrances within the barrier unit is relatively low, and vehicles pass through in a state of low saturation, sparse merging, and interleaving of conflicting vehicles, that is, when the maximum lane saturation flow at each entrance is less than the saturation flow threshold, and the maximum lane flow corresponding to any light group is less than the minimum number of vehicles that can pass through on green, then the recommended phase sequence for the barrier unit is "opposite mixed release".

[0123] The saturation flow threshold can be set based on experience, for example, it can be set to 0.5. Mixed release for opposing traffic means that all turning lanes at opposing entrances are released simultaneously.

[0124] like Figure 5 The image shows an example of a phase sequence combination when the traffic flow direction type of any inlet within the barrier unit is left-hand and straight-through, allowing simultaneous passage.

[0125] The barrier unit is a double-ring combination, and the phase sequence of the half-rings is "opposite mixed placement":

[0126] When the barrier unit has north and south entrances, the two semi-rings are: Ring 1 - south phase (including the combination of lights controlling the south straight and south left) and Ring 2 - north phase.

[0127] When the barrier unit is located at the east or west entrance, the two semi-rings are: Ring 1 – eastward phase and Ring 2 – westward phase.

[0128] Method 2: If the first comparison result is that the maximum lane saturation flow at any entrance within the barrier unit is greater than the saturation flow threshold, and / or the second comparison result is that the maximum lane flow corresponding to the light group within the barrier unit is greater than the minimum number of vehicles that can pass through on green, and the entrance congestion status at any entrance within the barrier unit is congested, then the phase sequence of the barrier unit is one-way wheel release and no overlap.

[0129] During implementation, when there is significant demand at one entrance within a barrier unit and limited space for overlapping in conflict directions (i.e., the maximum lane saturation flow at any entrance within the barrier unit exceeds the saturation flow threshold, and / or the maximum lane flow corresponding to each light group within the barrier unit exceeds the minimum number of vehicles that can pass through on green), the recommended phase sequence for the barrier unit is "one-way wheel release." When any entrance is congested, the recommended phase sequence for the barrier unit is "no overlap."

[0130] like Figure 6 As shown, this is an example two of the phase sequence combinations when the traffic flow direction type of any inlet within the barrier unit is left-hand and straight-through, allowing simultaneous passage.

[0131] Wherein, the barrier unit is a double ring combination, and the phase sequence of the half rings is “first one-way release, then mixed release, and finally one-way release”:

[0132] When the barrier unit is a south-north import, the two half rings are respectively: ring 1—southward phase (barrier first phase) + post-position virtual phase, ring 2—pre-position virtual phase + northward phase.

[0133] When the barrier unit is an east-west import, the two half rings are respectively: ring 1—eastward phase (barrier first phase) + post-position virtual phase, ring 2—pre-position virtual phase + westward phase.

[0134] Wherein, the barrier first phase is the phase with the largest lane flow or the phase with the largest number of lanes.

[0135] The pre-position virtual phase in the present application needs to meet the following conditions: the vehicle flow of the main phase can form a continuous flow. That is, the green light duration of the pre-position virtual phase is at least longer than the minimum green light time of the main phase, and at most does not exceed the maximum saturated release duration of the main phase.

[0136] Wherein, the minimum green light time of the main phase can be determined according to the lane width and the number of lanes, that is, the minimum green light time = (lane width × lane number) / pedestrian step speed. The lane width is not configured by default as 3.5m, and the pedestrian step speed is 1m / s by default.

[0137] Wherein, the maximum saturated release duration of the main phase is determined according to the lane expansion or guide arrow of the import channel control turning. When the import channel control turning corresponding to the main phase has lane expansion or guide arrow, the maximum lane saturated release duration is calculated through the lane expansion length or the number of guide arrows. Specifically, as shown in formula (2):

[0138]

[0139] Wherein, t s is the maximum lane saturated release duration under the main phase; lw i is the lane expansion length (m) of the i-th lane, H i is the saturated vehicle headway (generally 2-3s) of the i-th lane; n is the number of guide arrows, L g,i is the guide arrow length interval (generally 6-7m) on the i-th lane.

[0140] The maximum lane saturated release duration of the channel control turning under the main phase is taken as the maximum saturated release duration of the main phase.

[0141] The third mode: if the first comparison result is that the maximum lane saturation flow of any entrance in the barrier unit is greater than the saturation flow threshold, and / or the second comparison result is that the maximum lane flow corresponding to the light group in the barrier unit is greater than the minimum green number of vehicles that can pass, and the entrance congestion state of each entrance in the barrier unit is not congested, then the phase sequence of the barrier unit is one-way rotation and allows to overlap.

[0142] In the implementation, when there is a large demand for one entrance in the barrier unit and there is less penetration space in the conflict direction, that is, the maximum lane saturation flow of any entrance in the barrier unit is greater than the saturation flow threshold, and / or the maximum lane flow corresponding to the light group in the barrier unit is greater than the minimum green number of vehicles that can pass, then the recommended phase sequence of the barrier unit is one-way rotation. When each entrance is in an uncongested state, the recommended phase sequence of the barrier unit is to allow overlap.

[0143] The phase sequence combination example of the third mode is the same as the second phase sequence combination example as shown in Figure 6 , and will not be described one by one here.

[0144] In step S106, the release order of each barrier unit in the intersection and the phase sequence are combined to obtain the phase sequence of the intersection.

[0145] In order to facilitate understanding of the overall scheme of the phase sequence configuration of the used intersection in the present application, the flowchart as shown in Figure 7 is used for description.

[0146] In step E1, it is determined that the intersection is a used intersection;

[0147] In step E2, the intersection is divided into barrier units;

[0148] In step E3, it is determined whether the barrier unit is a barrier with the maximum lane flow. If yes, in step E4, the barrier unit is determined to be a first barrier unit. If not, in step E5, the barrier unit is determined to be a last barrier unit.

[0149] In step E6, the release order of each barrier unit is generated.

[0150] In step E7, it is determined whether the vehicle flow direction type of the opposite entrance in the barrier unit is left straight alone.

[0151] When the vehicle flow direction type of the opposite entrance in the barrier unit is left straight alone, in step E8, it is determined whether the lane flow similarity between different turning lanes of each entrance is greater than the similarity threshold. If yes, in step E9, the phase sequence of the barrier unit is determined to be one-way rotation and prohibited overlap. If not, in step E10, the phase sequence of the barrier unit is determined to be symmetric release and allowed overlap.

[0152] When the vehicle flow direction type of any import in the barrier unit is left straight simultaneous release, in step E11, it is determined whether the maximum lane saturation flow of each import in the barrier unit is less than the saturation flow threshold value, and whether the maximum lane flow corresponding to any light group in the barrier unit is less than the minimum green passable vehicle number; if so, in step E12, it is determined that the phase sequence of the barrier unit is opposite mixed release; if not, in step E13, it is determined whether any import in the barrier unit is in a congestion state; if so, in step E14, it is determined that the phase sequence of the barrier unit is one-way round release and prohibits overlap; if not, in step E15, it is determined that the phase sequence of the barrier unit is one-way round release and allows overlap.

[0153] As shown in Figure 7 , a phase sequence configuration method of an intersection is shown after it is determined that the intersection is a used intersection.

[0154] In a possible implementation, when there is a target building in the intersection preset area, the intersection will have a pedestrian dense period, and therefore the phase sequence of the intersection needs to be adjusted. At this time, the phase sequence configuration method provided by the application includes the steps shown in Figure 8 .

[0155] In step S801, map information in the intersection preset area is obtained.

[0156] In step S802, if it is determined based on the map information that there is a target building in the intersection preset area, a time period in which the number of pedestrians is greater than a number threshold value is determined.

[0157] The target building includes a school, a hospital, a scenic spot, a business district, and the like, and the number of pedestrians in the time period is greater than a number threshold value, for example, a time period when school is over.

[0158] In step S803, when the vehicle flow direction type of each import in the barrier unit is left straight separate release, the phase sequence of the lane in the barrier unit is set to opposite release and prohibits overlap in the time period.

[0159] In step S804, when the vehicle flow direction type of any import in the barrier unit is left straight simultaneous release, the phase sequence of the lane in the barrier unit is set to one-port round release and prohibits overlap in the time period.

[0160] In step S805, based on the phase sequence of the lane in each barrier unit and a preset pedestrian-lane phase combination, the phase sequence of the sidewalk in the barrier unit is determined.

[0161] In the implementation, if it is determined according to the map information that there is a target building in the preset area of the intersection, in order to minimize the conflict between pedestrians and motor vehicles and ensure the safety of pedestrians following the straight lane during the time period of high pedestrian density, the phase sequence of the lane needs to be adjusted. When the traffic flow direction type of each entrance in the barrier unit is left straight separate release, the phase sequence of the lane is adjusted to be symmetric release and no overlap. When the traffic flow direction type of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the lane is adjusted to be single-port rotation release and no overlap.

[0162] Meanwhile, the phase sequence of the sidewalk is determined according to the preset pedestrian-lane phase combination. As shown in the figure, it is an example of the preset pedestrian-lane phase combination in the barrier unit. Figure 9

[0163] When the sidewalk is a south-north zebra crossing release, the preset pedestrian-lane phase combination is: pedestrian-lane phase combination 1-south zebra crossing + west straight, pedestrian-lane phase combination 2-north zebra crossing + east straight.

[0164] When the sidewalk is an east-west zebra crossing release, the preset pedestrian-lane phase combination is: pedestrian-lane phase combination 1-west zebra crossing + north straight, pedestrian-lane phase combination 2-east zebra crossing + south straight.

[0165] In order to facilitate the understanding of the overall scheme of the phase sequence configuration of the sidewalk in this application, it is described in combination with the flow chart as shown in the figure. Figure 10

[0166] In step M1, the map information in the preset area of the intersection is obtained.

[0167] In step M2, it is determined whether there is a target building in the preset area of the intersection.

[0168] If there is a target building in the preset area of the intersection, it is directly determined in step M3 whether it is a time period with a number of pedestrians greater than a number threshold. If it is a time period with a number of pedestrians greater than a number threshold, in step M4, when the traffic flow direction type of each entrance in the barrier unit is left straight separate release, the phase sequence of the lane is adjusted to be symmetric release and no overlap. When the traffic flow direction type of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the lane is adjusted to be single-port rotation release and no overlap. If it is not a time period with a number of pedestrians greater than a number threshold, step M5 is directly executed to determine the phase sequence of the sidewalk according to the preset pedestrian-lane phase combination.

[0169] If there is no target building in the preset area of the intersection, step M5 is directly executed.

[0170] ​​In step M6, when the sidewalk is a north-south zebra crossing, the combinations are: combination 1 - south zebra crossing + west straight, combination 2 - north zebra crossing + east straight; in step M7, when the sidewalk is an east-west zebra crossing, the combinations are: combination 1 - west zebra crossing + north straight, combination 2 - east zebra crossing + south straight.

[0171] As shown in Figure 10 , a method for adjusting the phase sequence of the intersection in a pedestrian dense period and a phase sequence configuration scheme of the sidewalk are shown after it is determined that the intersection is a used intersection. Finally, the release order of each barrier unit in the intersection, the phase sequence of the lane, and the phase sequence of the sidewalk are combined to obtain the phase sequence of the intersection in the pedestrian dense period.

[0172] In a possible implementation, if the intersection is a newly built intersection, no motor vehicle has traveled in the intersection, there is no traffic information, and therefore the phase sequence of the intersection cannot be configured using the above steps, so the phase sequence configuration method provided by the present application further includes the steps shown in Figure 11 .

[0173] In step S1101, when it is determined that the intersection is a newly built intersection, the lane channelization and light group information of the intersection are obtained.

[0174] In step S1102, the lane channelization and / or light group information are matched with a preset judgment condition to determine the traffic direction type of each entrance in the intersection.

[0175] In step S1103, the following operations are performed for each barrier unit of the intersection:

[0176] When the traffic direction type of the opposite entrances in the barrier unit is left straight separate release, if the number of the same turning lanes of the opposite entrances is the same, the phase sequence of the barrier unit is symmetric release and allows overlap; if the number of at least one same turning lane of the opposite entrances is different, the phase sequence of the barrier unit is single-port round release and allows overlap.

[0177] When it is determined that the traffic direction type of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the barrier unit in the preset daytime period is set to single-port round release and allows overlap, and the phase sequence of the barrier unit in the preset nighttime period is set to opposite mixed release.

[0178] In a specific implementation, when the traffic direction type of the opposite entrances in the barrier unit is left straight separate release, if the number of left turning lanes and the number of straight lanes of the opposite entrances are consistent, the recommended phase sequence of the barrier unit is “symmetric release + allows overlap”, otherwise the recommended phase sequence of the barrier unit is “single-port round release + allows overlap”.

[0179] When it is determined that the vehicle flow direction type of any import of the barrier unit is left straight while releasing, the demand is relatively large in the day period (6:00-22:00), and the phase sequence of the barrier unit is recommended to be ''single-port round release + allow overlap''; in the night period, the demand of each direction is relatively small, and the phase sequence of the barrier unit is recommended to be ''opposite mixed release''.

[0180] Finally, the release order of each barrier unit in the intersection and the phase sequence of the barrier unit are combined to obtain the phase sequence of the newly-built intersection.

[0181] Therefore, in the present application, the traffic evaluation parameters such as the lane channelization, the light group information, the lane flow, the lane saturated flow, the congestion delay index, the vehicle flow direction type of each import in the intersection, the release order of each barrier unit, the lane flow similarity between different turning lanes of each import, the minimum green passable vehicle number of each lane and the import congestion state of each import are calculated, and the phase sequence of the intersection is configured according to the evaluation parameters. Compared with the single factor used in the prior art, the phase sequence configuration scheme obtained is more reasonable, and the efficiency and quality of the signal lamp timing scheme determined based on the phase sequence configuration scheme are improved, so that the vehicles passing through the intersection are safer and more efficient.

[0182] Based on the same inventive concept, the present application also provides a phase sequence configuration device of an intersection, Figure 12 A structural schematic diagram of a phase sequence configuration device of an intersection provided by the present application embodiment, the device comprises:

[0183] The information acquisition module 1201 is configured to, when it is determined that the intersection is a used intersection, acquire the lane channelization, the light group information and the traffic information of the intersection, and the traffic information includes the lane flow, the lane saturated flow and the congestion delay index;

[0184] The judgment module 1202 is configured to match the lane channelization and / or the light group information with a preset judgment condition, and judge the vehicle flow direction type of each import in the intersection.

[0185] The barrier order determination module 1203 is configured to determine the release order of each barrier unit in the intersection based on the lane flow, and the barrier unit includes opposite imports.

[0186] The parameter determination module 1204 is configured to calculate the lane flow similarity between different turning lanes of each import based on the lane channelization and the lane flow, obtain the minimum green passable vehicle number of each lane according to the lane channelization and the lane saturated flow, and judge the import congestion state of each import based on the lane channelization and the congestion delay index.

[0187] The phase sequence configuration module 1205 is configured to: when the types of vehicle flow directions of opposite entrances in the barrier unit are all left straight alone release, compare the lane flow similarity and the similarity threshold, and set the phase sequence of the barrier unit; when the type of vehicle flow direction of any entrance in the barrier unit is left straight simultaneous release, set the phase sequence of the barrier unit by using a first comparison result of the lane saturation flow and the saturation flow threshold, a second comparison result of the lane flow and the minimum green number of passable vehicles, and the entrance congestion state.

[0188] The phase sequence determination module 1206 is configured to combine the release order of each barrier unit in the intersection and the phase sequence to obtain the phase sequence of the intersection.

[0189] In a possible implementation, the device further includes:

[0190] The information acquisition module 1201 is further configured to acquire the lane channelization and the light group information of the intersection when the intersection is a newly-built intersection.

[0191] The judgment module 1202 is further configured to match the lane channelization and / or the light group information with a preset judgment condition, and judge the types of vehicle flow directions of each entrance in the intersection.

[0192] The phase sequence configuration module 1205 is further configured to perform the following operations for each barrier unit of the intersection:

[0193] When the types of vehicle flow directions of opposite entrances in the barrier unit are all left straight alone release, if the number of same turning lanes of opposite entrances is the same, the phase sequence of the barrier unit is symmetric release and allows overlap; if the number of at least one same turning lane of opposite entrances is different, the phase sequence of the barrier unit is single-port rotation and allows overlap.

[0194] When the type of vehicle flow direction of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the barrier unit in a preset daytime period is set to single-port rotation and allows overlap, and the phase sequence of the barrier unit in a preset nighttime period is set to opposite mixed release.

[0195] In a possible implementation, the device further includes:

[0196] The information acquisition module 1201 is further configured to acquire map information in a preset area of the intersection.

[0197] The parameter determination module 1204 is further configured to determine a time period in which the number of pedestrians is greater than a number threshold, if it is determined based on the map information that there is a target building in the preset area of the intersection.

[0198] The phase sequence configuration module 1205 is further configured to set the phase sequence of the lanes in the barrier unit to symmetric release and prohibit overlap when the type of vehicle flow direction of each entrance in the barrier unit is left-straight separate release.

[0199] The phase sequence configuration module 1205 is further configured to set the phase sequence of the lanes in the barrier unit to single-entrance round release and prohibit overlap when the type of vehicle flow direction of any entrance in the barrier unit is left-straight simultaneous release.

[0200] The phase sequence configuration module 1205 is further configured to determine the phase sequence of the pedestrian walkway in the barrier unit based on the phase sequence of the lanes in each barrier unit and a preset pedestrian-lane phase combination.

[0201] In a possible implementation, the judging module 1202 is specifically configured to:

[0202] For each entrance, the following operations are performed:

[0203] If it is identified based on the lane channeling that the entrance only includes independent left-turn lanes and independent straight lanes, and it is identified based on the light group information that the entrance only includes independent left-turn light groups and independent straight light groups, it is determined that the type of vehicle flow direction of the entrance is left-straight separate release.

[0204] If it is identified based on the lane channeling that the entrance includes left-straight composite lanes, and / or it is identified based on the light group information that the entrance only has one light group, it is determined that the type of vehicle flow direction of the entrance is left-straight simultaneous release.

[0205] In a possible implementation, the phase sequence configuration module 1205 is specifically configured to:

[0206] If the lane flow similarity between different turning lanes of each entrance in the barrier unit is greater than a similarity threshold, the phase sequence of the barrier unit is single-entrance round release and prohibit overlap.

[0207] If the lane flow similarity between different turning lanes of any entrance in the barrier unit is not greater than the similarity threshold, the phase sequence of the barrier unit is symmetric release and allow overlap.

[0208] In a possible implementation, the phase sequence configuration module 1205 is specifically configured to:

[0209] If the first comparison result is that the maximum lane saturation flow of each entrance in the barrier unit is less than a saturation flow threshold, and the second comparison result is that the maximum lane flow corresponding to any light group in the barrier unit is less than the minimum number of green-passable vehicles, the phase sequence of the barrier unit is opposite mixed release.

[0210] If the first comparison result is that the maximum lane saturation flow of any import of the barrier unit is greater than the saturation flow threshold, and / or the second comparison result is that the maximum lane flow corresponding to the light group in the barrier unit is greater than the minimum green passable vehicle number, and the import congestion state of any import of the barrier unit is congestion, the phase sequence of the barrier unit is one-way round and prohibited from lapping.

[0211] If the first comparison result is that the maximum lane saturation flow of any import of the barrier unit is greater than the saturation flow threshold, and / or the second comparison result is that the maximum lane flow corresponding to the light group in the barrier unit is greater than the minimum green passable vehicle number, and the import congestion state of each import of the barrier unit is not congestion, the phase sequence of the barrier unit is one-way round and allowed to lap.

[0212] In a possible implementation, the information acquisition module 1201 is specifically configured to acquire the lane flow of the intersection according to the following manner: acquiring the lane flow of the intersection within a historical time length; for each lane of the intersection, sorting the flow of the lane in the scheduling period within the historical time length in ascending order to obtain a sorting result; and taking the flow in a preset threshold range in the sorting result as the lane flow of the lane.

[0213] Based on the same inventive concept, the embodiment of the present application also provides an electronic device, Figure 13 An electronic device structure schematic diagram provided by the embodiment of the present application is shown in Figure 13 As shown, it includes a processor 1301, a communication interface 1302, a memory 1303 and a communication bus 1304, wherein the processor 1301, the communication interface 1302 and the memory 1303 complete mutual communication through the communication bus 1304.

[0214] The memory 1303 stores a computer program, and when the program is executed by the processor 1301, the processor 1301 executes the steps of any intersection phase sequence configuration method provided by the embodiment of the present application.

[0215] Since the above-mentioned electronic device solves the problem similar to the intersection phase sequence configuration method, the implementation of the above-mentioned electronic device can refer to the embodiment of the method, and the repeated parts will not be described here.

[0216] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface 1302 is used for communication between the above electronic device and other devices. The memory can include a Random Access Memory (RAM) and can also include a Non-Volatile Memory (NVM), such as at least one disk memory. Optionally, the memory can also be at least one storage device located away from the aforementioned processor.

[0217] The processor mentioned above can be a general-purpose processor, including a central processing unit, a network processor (NP), etc.; can also be a Digital Signal Processing (DSP), an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0218] On the basis of the above embodiments, the embodiment of the application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program executable by a processor. When the program runs on the processor, the processor executes the steps of any intersection phase sequence configuration method provided by the embodiment of the application.

[0219] Based on the same inventive concept, the embodiment of the application provides a computer program product, including a computer program, and the computer program is executed by a processor to realize the steps of any intersection phase sequence configuration method provided by the embodiment of the application.

[0220] Since the principle of solving the problem of the above computer readable storage medium is similar to the intersection phase sequence configuration method, the implementation of the above computer readable storage medium can refer to the embodiment of the method, and the repeated parts will not be described here.

[0221] Those skilled in the art will appreciate that embodiments of the present application can be readily used as software, hardware, or a combination of software and hardware. In one

[0222] The present application is described in reference to the flow diagrams and / or block diagrams of the methods, apparatus (systems) and computer program products according to this application. It will be understood that each block of the flow diagrams and / or block diagrams, and combinations of blocks in the flow diagrams and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flow diagrams and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing the function specified by the flow diagram and / or block diagram block or blocks.

[0223] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing the function specified by the flow diagram and / or block diagram block or blocks.

[0224] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing the function specified by the flow diagram and / or block diagram block or blocks.

[0225] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their legal equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for phase and sequence configuration of an intersection, characterized in that, The method comprises: When the intersection is determined to be a used intersection, lane channelization, light group information and traffic information of the intersection are acquired, the traffic information comprising lane flow, lane saturation flow and congestion delay index; The lane channelization and / or the light group information are matched with a preset judgment condition to determine the vehicle flow direction type of each entrance in the intersection; the lane flow is used to determine the release order of each barrier unit in the intersection; the barrier unit comprises opposite entrances; Based on the lane channelization and the lane flow, lane flow similarity between different turning lanes of each entrance is calculated; based on the lane channelization and the lane saturation flow, the minimum green passable vehicle number of each lane is obtained; based on the lane channelization and the congestion delay index, the entrance congestion state of each entrance is determined; When the vehicle flow direction type of opposite entrances in the barrier unit is left straight separate release, the lane flow similarity and a similarity threshold value are compared to set the phase sequence of the barrier unit; when the vehicle flow direction type of any entrance in the barrier unit is left straight simultaneous release, a first comparison result of the lane saturation flow and a saturation flow threshold value, a second comparison result of the lane flow and the minimum green passable vehicle number, and the entrance congestion state are used to set the phase sequence of the barrier unit; The release order and the phase sequence of each barrier unit in the intersection are combined to obtain the phase sequence of the intersection.

2. The method of claim 1, wherein, The method further comprises: When the intersection is determined to be a new intersection, lane channelization and light group information of the intersection are acquired; The lane channelization and / or the light group information are matched with the preset judgment condition to determine the vehicle flow direction type of each entrance in the intersection; For each barrier unit of the intersection, the following operations are performed: When the vehicle flow direction type of opposite entrances in the barrier unit is left straight separate release, if the number of the same turning lanes of the opposite entrances is the same, the phase sequence of the barrier unit is symmetric release and allows overlap; if the number of at least one same turning lane of the opposite entrances is different, the phase sequence of the barrier unit is single-port rotation and allows overlap; When the vehicle flow direction type of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the barrier unit in a preset daytime period is set to single-port rotation and allows overlap, and the phase sequence of the barrier unit in a preset nighttime period is set to opposite mixed release.

3. The method of claim 1, wherein, The method further comprises: Map information in a preset area of the intersection is acquired; If it is determined based on the map information that there is a target building in the preset area of the intersection, a time period in which the number of pedestrians is greater than a number threshold value is determined; When the vehicle flow direction type of each entrance in the barrier unit is left straight separate release, the phase sequence of the lanes in the barrier unit is set to symmetric release and prohibits overlap in the time period; When the vehicle flow direction type of any entrance in the barrier unit is left straight simultaneous release, the phase sequence of the lanes in the barrier unit is set to single-port rotation and prohibits overlap in the time period; The phase sequence of the sidewalk in each barrier unit is determined based on the phase sequence of the lanes in the barrier unit and a preset phase combination of the pedestrian and vehicle lanes.

4. The method according to claim 1 or 2, characterized in that, The lane channelization and / or the lamp group information are matched with the preset judgment condition to determine the vehicle flow direction type of each entrance in the intersection, including: For each entrance, the following operations are performed: If it is identified based on the lane channelization that the entrance only includes an independent left-turn lane and an independent straight lane, and based on the lamp group information that the entrance only includes an independent left-turn lamp group and an independent straight lamp group, it is determined that the vehicle flow direction type of the entrance is left-straight separate release; If it is identified based on the lane channelization that the entrance includes a left-straight composite lane, and / or based on the lamp group information that the entrance only has one lamp group, it is determined that the vehicle flow direction type of the entrance is left-straight simultaneous release.

5. The method of claim 1, wherein, The lane flow similarity and the similarity threshold value are compared to set the phase sequence of the barrier unit, including: If the lane flow similarity between different turning lanes of each entrance in the barrier unit is greater than the similarity threshold value, the phase sequence of the barrier unit is single-entrance round release and no overlap is allowed; If the lane flow similarity between different turning lanes of any entrance in the barrier unit is not greater than the similarity threshold value, the phase sequence of the barrier unit is symmetric release and overlap is allowed.

6. The method of claim 1, wherein, The first comparison result of the lane saturation flow and the saturation flow threshold value, the second comparison result of the lane flow and the minimum green number of vehicles, and the entrance congestion state are used to set the phase sequence of the barrier unit, including: If the first comparison result is that the maximum lane saturation flow of each entrance in the barrier unit is less than the saturation flow threshold value, and the second comparison result is that the maximum lane flow corresponding to any lamp group in the barrier unit is less than the minimum green number of vehicles, the phase sequence of the barrier unit is opposite mixed release; If the first comparison result is that the maximum lane saturation flow of any entrance in the barrier unit is greater than the saturation flow threshold value, and / or the second comparison result is that the maximum lane flow corresponding to the lamp group in the barrier unit is greater than the minimum green number of vehicles, and the entrance congestion state of any entrance in the barrier unit is congestion, the phase sequence of the barrier unit is one-way round release and no overlap is allowed; If the first comparison result is that the maximum lane saturation flow of any entrance in the barrier unit is greater than the saturation flow threshold value, and / or the second comparison result is that the maximum lane flow corresponding to the lamp group in the barrier unit is greater than the minimum green number of vehicles, and the entrance congestion state of each entrance in the barrier unit is not congestion, the phase sequence of the barrier unit is one-way round release and overlap is allowed.

7. The method of claim 1, wherein, The lane flow of the intersection is obtained in the following manner: The lane flow in the historical time period of the intersection is obtained; For each lane of the intersection, the flow of the lane in the dispatching period in the historical time period is sorted in ascending order to obtain a sorting result; The traffic flow of a preset threshold range in the sorting result is taken as the lane traffic flow of the lane.

8. A phase sequence configuration device of an intersection, characterized by, The device comprises: An information acquisition module, configured to acquire lane channelization, light group information and traffic information of the intersection when the intersection is determined as a used intersection, wherein the traffic information comprises lane traffic flow, lane saturation traffic flow and congestion delay index; A judgment module, configured to match the lane channelization and / or the light group information with a preset judgment condition, and judge the vehicle flow direction type of each entrance in the intersection; A barrier sequence determination module, configured to determine the release sequence of each barrier unit in the intersection based on the lane traffic flow, wherein the barrier unit comprises a facing entrance; A parameter determination module, configured to calculate the lane traffic flow similarity between different turning lanes of each entrance based on the lane channelization and the lane traffic flow, obtain the minimum green passable vehicle number of each lane according to the lane channelization and the lane saturation traffic flow, and judge the entrance congestion state of each entrance based on the lane channelization and the congestion delay index; A phase and sequence configuration module, configured to compare the lane traffic flow similarity with a similarity threshold value when the vehicle flow direction type of the facing entrance in the barrier unit is left straight separate release, and set the phase and sequence of the barrier unit; when the vehicle flow direction type of any entrance in the barrier unit is left straight simultaneous release, use a first comparison result of the lane saturation traffic flow and a saturation traffic flow threshold value, a second comparison result of the lane traffic flow and the minimum green passable vehicle number, and the entrance congestion state to set the phase and sequence of the barrier unit; A phase and sequence determination module, configured to combine the release sequence and the phase and sequence of each barrier unit in the intersection to obtain the phase and sequence of the intersection.

9. An electronic device, comprising: The electronic device comprises a processor configured to implement the steps of the phase and sequence configuration method of the intersection according to any one of claims 1-7 when executing a computer program stored in a memory.

10. A computer-readable storage medium, characterized in that, The electronic device comprises a processor configured to implement the steps of the phase and sequence configuration method of the intersection according to any one of claims 1-7 when executing a computer program stored in a memory.

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