CN113053143A

CN113053143A - Signal lamp timing optimization method and device and electronic equipment

Info

Publication number: CN113053143A
Application number: CN202110352060.XA
Authority: CN
Inventors: 胡灿
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-06-29

Abstract

The application discloses a signal lamp timing optimization method, a signal lamp timing optimization device and electronic equipment, wherein a first time length of a target lamp color after signal lamp adjustment with a first phase is determined; acquiring phase correlation information of a first phase and a first phase group, wherein the first phase group is a phase except the first phase; determining a second phase in the first phase group that satisfies a target condition with the first phase based on the phase correlation information; and based on the first time length, adjusting the timing of the target lamp color of the signal lamp in the second phase to obtain the timing information of the signal lamp after adjustment.

Description

Signal lamp timing optimization method and device and electronic equipment

Technical Field

The application relates to the technical field of information processing, in particular to a signal lamp timing optimization method and device and electronic equipment.

Background

The vehicles bring traversal to daily life of people, however, as more and more vehicles drive to the road, the traffic load of the road is increased, and in addition, the traffic signal lamps cannot reasonably regulate and control the vehicle passing in all directions, so that the traffic jam phenomenon is serious.

Therefore, in the scene of the internet of vehicles, the timing of the traffic signal lamps needs to be adjusted to improve the passing efficiency of the intersection. However, when the timing adjustment is performed on the signal lamps, the timing of one signal lamp is modified to affect the timing of other signal lamps, and how to efficiently and reasonably optimize the timing of the signal lamps is a problem to be solved urgently.

Disclosure of Invention

In view of this, the present application provides the following technical solutions:

a signal lamp timing optimization method comprises the following steps:

determining a first time length of a target light color after signal lamp adjustment with a first phase, wherein the phase represents a passing direction of independent control of the signal lamp;

acquiring phase correlation information of the first phase and a first phase group, wherein the first phase group is a phase except the first phase;

determining, in the first phase, a second phase satisfying a target condition with the first phase based on the phase correlation information;

and adjusting the timing of the target lamp color of the signal lamp in the second phase based on the first time length to obtain the adjusted timing information of the signal lamp.

Optionally, the obtaining phase association information of the first phase and the first phase group includes:

acquiring spatial association information of the first phase and each phase in a first phase group, wherein the spatial association represents that the first phase and the phase in the first phase group have association of a spatial motion track;

and acquiring time correlation information of the first phase and each phase in the first phase group, wherein the time correlation represents that the first phase and the phase in the first phase group have time correlation when the lamp color is the same.

Optionally, the determining, based on the phase correlation information, a second phase that satisfies a target condition with the first phase comprises:

determining a phase in the first phase group having both spatial correlation and temporal correlation with the first phase based on the spatial correlation information and the temporal correlation information, the phase being determined as a second phase.

Optionally, the adjusting the timing of the target light color of the signal lamp in the second phase based on the first time length to obtain the adjusted timing information of the signal lamp includes:

determining an increase time length of a target light color of a signal lamp having a first phase based on the first time length;

and moving the starting time of the target light color of the signal lamp in the second phase back by the adding duration to obtain the adjusted timing information of the signal lamp.

Optionally, the method further comprises:

determining a third phase meeting a target condition in the second phase group based on the second phase and the second desired phase association information, wherein the second phase group is a phase other than the first phase and the second phase;

and adjusting the timing of the target lamp color of the signal lamp of the third phase based on the first time length to obtain adjusted timing information of the third phase.

Optionally, the adjusting the timing of the target lamp color of the signal lamp in the third phase based on the first duration to obtain the adjusted timing information in the third phase includes:

detecting whether the third phase is a compensated phase of the first phase;

if so, determining the increasing time length of the target light color of the signal lamp with the first phase based on the first time length;

and shifting the starting time of the target light color of the signal lamp of the third phase back by the increasing time length, and simultaneously reducing the time length of the target light color of the signal lamp of the third phase by the increasing time length.

Optionally, the obtaining of the adjusted time-distribution information of the signal lamp includes:

and if the timing adjustment of the signal lamp is the fixed period adjustment, adjusting the time length of the associated lamp color of the signal lamp and the target lamp color according to the period time length of the signal lamp after the timing adjustment of the target lamp color of the signal lamp is responded, and acquiring the timing information of the signal lamp.

Optionally, the method further comprises:

detecting whether an associated signal lamp corresponding to the adjusted signal lamp exists or not;

if so, based on the adjusted timing information of the signal lamp, timing adjustment is carried out on the associated signal lamp so as to obtain the adjusted timing information of the associated signal lamp.

A signal timing optimization device, comprising:

the first determining unit is used for determining a first time length of the target light color after the signal lamp with a first phase is adjusted, and the phase represents the passing direction of the signal lamp independent control;

an obtaining unit, configured to obtain phase association information between the first phase and a first phase group, where the first phase group is a phase other than the first phase;

a second determining unit configured to determine, in the first phase group, a second phase that satisfies a target condition with the first phase, based on the phase correlation information;

and the adjusting unit is used for adjusting the timing of the target lamp color of the signal lamp in the second phase based on the first time length to obtain the timing information of the adjusted signal lamp.

An electronic device, comprising:

a memory for storing an application program and data generated by the application program running;

a processor for executing the application to implement:

determining, in the first phase group, a second phase satisfying a target condition with the first phase based on the phase correlation information;

By the technical scheme, the application discloses a signal lamp timing optimization method, a signal lamp timing optimization device and electronic equipment, and the method comprises the steps of determining a first time length of a target lamp color after signal lamp adjustment with a first phase; acquiring phase correlation information of a first phase and a first phase group, wherein the first phase group is a phase except the first phase; determining a second phase in the first phase group that satisfies a target condition with the first phase based on the phase correlation information; and based on the first time length, adjusting the timing of the target lamp color of the signal lamp in the second phase to obtain the timing information of the signal lamp after adjustment. Through phase correlation information among the phases, after one phase is adjusted, other phases are automatically adjusted, and the purpose of efficiently and reasonably optimizing the timing of the signal lamp is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the provided drawings without creative efforts.

Fig. 1 is a schematic flowchart of a signal timing optimization method provided in an embodiment of the present application;

fig. 2 is a schematic diagram of an intersection phase according to an embodiment of the present application;

FIG. 3 is a schematic diagram of initial green light timing of each phase of a target intersection according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a phase time correlation provided in an embodiment of the present application;

fig. 5 is a schematic diagram of green timing of a signal lamp after timing adjustment of phase 6 according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of green light timing after phase timing adjustment according to an embodiment of the present disclosure;

fig. 7 is a schematic flowchart of a signal lamp timing optimization apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a signal lamp timing optimization method, which can be applied to the field of timing adjustment of traffic signal lamps, wherein the signal lamps can be traffic signal lamps at passing intersections and can also be pedestrian signal lamps.

For convenience of description of the embodiments of the present application, first, a description is given of related concepts in a traffic signal control scenario in the embodiments of the present application.

And (3) color of the lamp: the signal lamp only has three colors of red, green and yellow, and the three lights can appear alternately according to a certain sequence, generally the sequence of green, yellow and red.

Phase position: the passing direction of a vehicle or a pedestrian independently controlled by the signal lamp is a phase.

And (3) period: the time taken for the signal lamp of each phase to go through one color wheel revolution of green, yellow and red lamps is one period, i.e. the period of each phase is usually the same.

Timing: the time length of each light color of the signal lamp is indicated, and the time distribution of the three light colors is added together to form a period.

It is to be noted that relational terms such as first and second, and the like, appearing in the embodiments of the present application, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Specifically, in the embodiment of the present application, for example, the first phase and the second phase are only characterized by two identical phases, which may not be identical to the first phase and the second phase labeled in some scenarios, for example, phase 1, phase 2, and phase 3 may be labeled in a certain drawing, and the first phase may not necessarily refer to phase 1 corresponding to the description of the embodiment, which is subject to the specific description in the embodiment of the present application.

Referring to fig. 1, a schematic flow chart of a signal timing optimization method provided in an embodiment of the present application is shown, where the method may include the following steps:

s101, determining a first time length of the target light color after the signal lamp with the first phase is adjusted.

The phase position represents the traffic direction independently controlled by the signal lamp, i.e. the traffic direction of a vehicle or a pedestrian independently controlled by the signal lamp is called a phase position. Referring to fig. 2, which shows a schematic diagram of the phases of the intersection provided by the embodiment of the present application, each line with arrows in fig. 2 identifies one phase, and a total of 8 phases are included in fig. 2. The phase labels relate to the actual application scenario, and the phase labels in fig. 2 do not indicate that the control turns to the right, since normally the right turn phase and the phase label in the straight direction are the same signal light control. In some application scenarios, the signal lights in the straight-going direction and the right-turning direction are separately controlled, and the intersection corresponding to the scenario may include 12 phases, and the division criterion of which phase is adopted in the embodiment of the present application is not limited.

The signal lamp has three lamp colors, namely green, red and yellow, the target lamp color refers to one of the lamp colors, but in an actual application scene, in order to facilitate optimization of signal lamp timing, the duration of the green lamp or the duration of the red lamp is usually adjusted, the duration of the yellow lamp is usually not changed, in a specific application scene, any one of the lamp colors can also be adjusted as the target lamp color, and in the embodiment of the present application, in order to facilitate description of the target lamp color, the target lamp color is usually referred to as the green lamp.

It should be noted that the signal lamp with the first phase determined in the embodiment of the present application is a signal lamp to be adjusted determined based on the traffic flow of the current traffic area, for example, at the first road junction, the traffic in the phases from south to north is congested, and in order to meet the normal traffic demand, the traffic duration corresponding to the phases from south to north, that is, the duration of the green light, may be increased by a certain time, that is, the phase from south to north is determined as the first phase. And the first phase may represent only one phase, i.e. a north-south phase, or may represent a group of phases, for example, the first phase includes a north-south phase and a south-north phase, and if a group of phases is represented, the initial timing information of the group of phases and the pass control signal are the same.

The first time length of the adjusted target light color refers to a time length occupied by each target light color of the signal lamp, and if the target light color is a green light, the initial time length of the green light of the first phase is 30S, and the time length of the corresponding adjusted green light can be 40S, the first time length corresponds to the 40S.

In another possible embodiment, the time length of the post-adjustment change of the signal light of the first phase, for example, the time length increased compared to the initial time length or the time length decreased compared to the initial time length, may also be determined, and then the time lengths of the other associated phases may be adjusted according to the time length of the change.

S102, acquiring the associated phase information of the first phase and the first phase group.

The first phase group is the phases other than the first phase, and taking the phase diagram shown in fig. 2 as an example, if 8 phases are included, after determining one of the phases as the first phase, the remaining 7 phases are taken as the first phase group.

The associated phase information of the first phase and the first phase group refers to the associated phase information of the first phase and each phase in the first phase group, that is, whether the first phase has a certain association with other phases except the first phase, the association refers to a phase which is affected if the duration of the target lamp color of the first phase is adjusted, and the affected phase has a phase association with the first phase. The phase correlation information may include spatial correlation information and temporal correlation information, and in general, the temporal correlation information refers to a temporal relationship existing with a phase of the same target lamp color of the phase after the phase target lamp color timing is changed. This will be explained in detail in the following examples.

And S103, determining a second phase meeting the target condition with the first phase in the first phase group based on the phase correlation information.

The target condition refers to a condition that the phase correlation information satisfies, for example, the target condition may be a condition that phases overlap in both space and time.

The second phase is substantially a conflict phase of the first phase, that is, after the timing adjustment of the target light color is performed on the first phase, if the timing corresponding to the second phase is not adjusted, the traffic confusion is caused, and even the traffic accident is caused.

And S104, based on the first duration, adjusting the configuration of the target light color of the signal lamp in the second phase to obtain the adjusted timing information of the signal lamp.

After the second phase corresponding to the first phase is obtained, the timing of the second phase needs to be synchronously adjusted, and the smooth passing of the intersection corresponding to the adjusted signal lamp can be ensured. In the embodiment of the present application, in order to ensure efficient and reasonable adjustment, the timing of the signal lamp for adjusting the second phase is also adjusted by using the target lamp color as the adjustment target, for example, the first phase is the timing adjustment for the green lamp, and the second phase is the timing adjustment for the green lamp, but the adjustment manners of the two are different. Specifically, if the first duration is obtained after a certain timing is added to the green light of the first phase, the initial time of the original green light of the corresponding second phase needs to be shifted backward for a certain time. For example, the original time duration of the first phase green light is 30S, and if the time duration is increased to 40S, the original second phase starts to turn green light after 40S of the first phase green light is finished, and the second phase starts to turn green light after 50S of the first phase green light is finished.

And further, whether other phases with phase association information of the second phase meeting the target condition exist or not needs to be determined, if so, the timing of the phase is adjusted according to the timing adjustment mode, so that the phases are not influenced after the timing adjustment, and the method is more reasonable.

The application discloses a signal lamp timing optimization method, which comprises the steps of determining a first time length of a target lamp color after signal lamp adjustment with a first phase; acquiring phase correlation information of a first phase and a first phase group, wherein the first phase group is a phase except the first phase; determining a second phase in the first phase group that satisfies a target condition with the first phase based on the phase correlation information; and based on the first time length, adjusting the timing of the target lamp color of the signal lamp in the second phase to obtain the timing information of the signal lamp after adjustment. Through phase correlation information among the phases, after one phase is adjusted, other phases are automatically adjusted, and the purpose of efficiently and reasonably optimizing the timing of the signal lamp is achieved.

The following describes the phase-related information in the embodiments of the present application.

In a possible implementation manner, the obtaining phase association information of the first phase and the first phase group includes:

acquiring spatial correlation information of the first phase and each phase in the first phase group;

time correlation information of the first phase and each phase in the first phase group is obtained.

The spatial correlation represents the correlation of the first phase and the phase in the first phase group, wherein the spatial correlation represents the spatial motion track, and the temporal correlation represents the correlation of the first phase and the phase in the first phase group in the same lamp color existence time. For example, spatial correlation between phases specifically means that if the motion trajectories of vehicles or pedestrians of two phases intersect, the two phases are considered to be spatially correlated, i.e., there is a spatial conflict. The time correlation between the phases specifically means that if there is an overlap between the times when the lamp colors of the two phases are green lamps, the two phases are considered to be correlated in time, that is, there is a time conflict, and it should be noted that the determination of the time correlation between the phases is determined based on the timing of each lamp color of the phases. Taking the phase diagram of the intersection shown in fig. 2 as an example, if it is necessary to determine the phase having time correlation corresponding to the phase 1, it is necessary to determine which phase is also in the green light in the time period when the phase 1 is in the green light, and it can be known from the phase timing (i.e., the corresponding general timing pattern) corresponding to fig. 2 that the

phases

2, 5, and 6 are all likely to be in the green light when the phase 1 is in the green light, and may be different from the time period when the phase 1 is in the green light, but have an overlapping portion with the time when the phase 1 is in the green light, it is determined that the

phases

2, 5, and 6 have time correlation with the phase 1.

Correspondingly, the determining a second phase satisfying a target condition with the first phase based on the phase correlation information includes:

determining a phase in the first phase group having both spatial correlation and temporal correlation with the first phase based on the correlation information and temporal correlation information, the phase being determined as a second phase.

If the two phases are associated in space and time, that is, the two phases conflict in space and time, the two phases are considered to conflict, and the phase conflict is not allowed to occur at a normally-operating intersection, and the synchronized corresponding timing adjustment needs to be performed on the conflicting phases.

It should be noted that, in the embodiment of the present application, the second phase satisfying the target condition with the first phase may be a phase having both spatial correlation and temporal correlation with the first phase, and in an actual processing process, the phases having both spatial correlation and temporal correlation with the first phase may be determined, and then the same phase in the two groups of phases may be found, that is, the same phase satisfies both spatial correlation and temporal correlation with the first phase, and is determined as the second phase. The phase associated with the first phase meeting the space may be determined first, and then the phase associated with the first phase meeting the time is determined in the phase meeting the space association.

In the embodiment of the present application, a timing adjustment method is as follows: determining an increase duration of a target light color of the signal lamp having the first phase based on the first duration; and moving the starting time of the target light color of the signal lamp in the second phase back by the adding duration to obtain the adjusted timing information of the signal lamp.

The adjustment method corresponding to this embodiment is an adjustment method of increasing the timing of the target light color of the signal light in the first phase, that is, the first time length is the initial time length of the target light color of the signal light in the first phase plus the increased time length, for example, the green light timing of the signal light in the phase from south at a certain intersection is increased by 10S, the phase corresponding to the phase needs to be determined according to the spatial association and the time association, for example, the second phase, that is, the starting time of the green light in the second phase is shifted backward by 10S, and then the corresponding timing information is obtained, where the timing information includes not only the time length of each light color in the adjusted phase, but also the starting time of each light color in each phase, for example, the green light time of the associated phase is shifted backward.

It should be noted that, in the embodiment of the present application, the process of adjusting the timing of the phase signal is a process of adjusting one by one, that is, after the second phase is determined based on the association information of the first phase and the phase, it is necessary to continue to use the second phase as a reference phase to determine whether there is an associated phase that meets the target condition with the second phase, and if there is an associated phase, the associated phase is continuously adjusted until all associated phases (which may also be referred to as collision phases) are adjusted, so that the final adjusted phase is not subjected to collision adjustment.

Therefore, the embodiment of the present application further includes:

determining a third phase meeting the target condition in the second phase group based on the phase correlation information of the second phase and the second phase group; wherein the second phase group is a phase other than the first phase and the second phase;

and adjusting the timing of the target lamp color of the signal lamp of the third phase based on the first time length to obtain the adjusted timing information of the third phase.

Initially, the first phase is used as a reference phase, and then it is determined whether there are other conflicting phases with respect to the reference phase (i.e. the first phase), i.e. the second phase is the conflicting phase of the first phase, for example, if the green light timing of the first phase increases, the green light timing of the second phase may be shifted backward, while the second phase is used as the reference phase to continue to be adjusted backward, and if there is a conflicting phase corresponding to the second phase, e.g. the third phase, the green light timing of the third phase is correspondingly shifted backward.

If the green timing increases for a certain phase, there is a phase in which the green timing decreases for another phase, and the phase in which the green timing increases is generally referred to as an optimum phase, and the phase in which the green timing decreases is referred to as a compensation phase. Therefore, whether the timing adjustment needs to be performed also needs to consider whether the phase with the phase relation is the compensation phase.

Therefore, in a possible implementation manner of the present application, taking the third phase as an example, detecting whether the third phase is a compensation phase, specifically, adjusting the timing of the target lamp color of the signal lamp in the third phase based on the first time length to obtain the adjusted timing information of the third phase includes:

detecting whether the third phase is a compensation phase of the first phase;

if so, determining an increase time length of the target light color of the signal lamp with the first phase based on the first time length;

and shifting the target light color starting time of the signal lamp of the third phase back by the increasing time length, and simultaneously reducing the target light color time length of the signal lamp of the third phase by the increasing time length.

For example, the original green duration of the third phase is 30S, which is changed to green 20S after the end of the green of the first phase, and the green duration of the first phase is increased by 10S. Since the third phase is the associated phase (may also be referred to as a collision phase) of the first phase and is also the compensation phase of the first phase, the green light start time of the first phase is shifted backward by 10S, and the duration of the green light of the third phase is shortened by 10S. Correspondingly, the adjusted timing information of the third phase is as follows: the green light period of the third phase becomes 20S, which becomes green 30S after the end of the green light of the first phase.

Because the timing adjustment of a certain lamp color of the phase affects the period of the phase, that is, the time for each phase of the signal lamp to go through one color wheel rotation of green, yellow and red lamps is not limited, if the duration of the period is not limited, after the timing adjustment of a certain lamp color is increased or decreased, the corresponding period can be increased or decreased by the corresponding time, that is, the period-variable adjustment is performed.

In another embodiment, if the timing of the signal lamp is adjusted to be a fixed period adjustment, after the timing of the target light color of the signal lamp is adjusted in response, the time length of the associated light color of the signal lamp and the target light color is adjusted according to the period time length of the signal lamp, and the timing information of the signal lamp is obtained.

For example, when the green timing of the first phase is increased by 10S, since the period is fixed, the corresponding red timing of the first phase may be decreased by 10S.

In some application scenarios, in order to be able to match the speed of the passing object, the vehicle signal lamp and the pedestrian signal lamp are separately arranged, and in order to ensure the safety of pedestrian passing, the green light of the vehicle signal lamp is usually turned on earlier than the green light of the pedestrian signal lamp by several seconds on the same phase. In the application scene, if the vehicle signal lamp finishes timing adjustment based on the signal lamp of the phase to be adjusted, the pedestrian signal lamp is used as the associated signal lamp of the vehicle signal lamp, and corresponding adjustment is carried out on timing of the pedestrian signal lamp based on timing information of the adjusted vehicle signal lamp so as to obtain the timing information of the pedestrian signal lamp after adjustment.

It should be noted that, the signal lamp timing optimization method in the embodiment of the present application further includes: the method is characterized in that a group of target signal lamp optimization schemes are stored in advance, and the schemes are suitable for directly calling the target signal lamp optimization schemes when the signal lamp timing optimization schemes cannot be determined within a certain period so as to ensure reasonable operation of signal lamps. For example, when it is detected that the vehicle at a certain intersection is congested, in order to quickly solve the problem, timing of signal lights needs to be adjusted, and if an optimal scheme cannot be calculated within a specified time limit range, the target signal light optimization scheme is called to solve the problem of signal light timing optimization at the intersection, so that the problem of congestion at the intersection is alleviated. The target signal lamp optimization scheme pre-stored in this embodiment may be a scheme generated based on an existing optimization experience, or may be a scheme generated by using a simpler processing manner, for example, after a green light timing of a certain phase is added, green light timings corresponding to other phases are all added, and the like.

The signal lamp timing optimization method in the embodiment of the present application is described below with the signal lamp of the target intersection shown in fig. 2 as an application scenario. For convenience of description, the first phase in the above-described embodiment is referred to as an optimal phase, i.e., a phase in which green lighting timing increases, a phase in which green lighting timing decreases is referred to as a compensation phase, and a phase in which phase association information with the optimal phase satisfies a target condition is referred to as a collision phase.

Referring to fig. 3, a schematic diagram of the initial green light timing for each phase of a target intersection is shown. As shown in fig. 3, the initial green timing for phase 1 and phase 2 is the same, e.g., 40S. The initial green timing of phase 3 and phase 4 is the same, 40S, and the green lamps of phase 3 and phase 4 are lit up 20 seconds after the green lamps of phase 1 and phase 2 are finished. The initial green timing of phase 5 and phase 6 are both 20S, and the green lamps of phase 5 and phase 6 are lit immediately after the green lamps of phase 1 and phase 2 are finished. The initial green timing of phase 7 and phase 8 are both 20S, and the green lamps of phase 7 and phase 8 are lit immediately after the green lamps of phase 3 and phase 4 are finished. It should be noted that the specific values illustrated in fig. 3 are set for convenience of description, and the actual values need to be matched with the actual situations of the corresponding ports.

The first phase in the above embodiments is described as an optimal phase for the convenience of description of the application scenario, and a phase satisfying a target condition with the first phase is described as a conflicting phase.

Assuming that the phase 1 is a first phase, that is, an optimized phase is determined first, the determination of the optimized phase is related to the traffic state at the intersection, and if the traffic of the signal lamp control direction corresponding to the phase 1 is congested, a certain green light timing needs to be added for the phase 1, for example, the added green light timing is 10S. After determining the phase 1 that needs to be increased during green lighting, there is a phase that needs to be decreased during green lighting in order to properly adjust the timing, and the phase that needs to be decreased during green lighting is called the compensation phase. Generally, the traffic direction of the optimized phase and the traffic direction of the compensation phase are opposite, the phase 1 is taken as the optimized phase, which represents the traffic direction from south to north, if the duration of green light in the direction is increased, the traffic direction from the south to north is proved to be more, if the number of vehicles corresponding to the traffic direction from east to west is less, the phase in the traffic direction from east to west can be controlled to be the compensation phase, namely, when the duration of green light is reduced as the compensation phase, the normal traffic requirement can be met. Phase 3 can therefore be used as a compensation phase in this scenario, and its green timing needs to be reduced by 10S. It should be noted that, after the optimized phase is determined in the embodiment of the present application, the associated phase may be determined first, and then whether a compensation phase exists in the associated phase is determined while determining the associated phase, or after the optimized phase is determined, the compensation phase is determined, and then the associated phase is determined, and when the associated phase is subjected to timing adjustment, an adjustment manner in which the associated phase is simultaneously corresponding to the compensation phase needs to be considered, specifically, the following embodiments will be described, and details are not described here.

The associated phase is a phase which is spatially associated with the phase 1 and temporally associated with the phase 1, wherein the spatial association means that the motion tracks of the vehicles or pedestrians in the two phases are crossed, and the temporal association means that the time when the lamp colors of the two phases are green lamps are overlapped. Therefore, as can be seen from fig. 2, the number of phases spatially associated with (i.e., spatially conflicting with) phase 1 is 4, namely, phase 3, phase 4, phase 6, and phase 7.

Referring to fig. 4, which shows a schematic diagram of the time relationship of the phases, in fig. 4, the black rectangular bars represent the initial green light timing of each phase, since the phase 1 is the optimized phase in the application scenario, i.e., the green light timing thereof needs to be increased by 10S, in fig. 4, the gray rectangular bars represent the green light timing of the phase 1, which needs to be increased by 10S, and since the phase 3 is the compensation phase of the phase 1, the initial green light timing thereof needs to be decreased by 10S, and in fig. 4, the green light timing of the phase 3 is represented by the rectangular bars with twill filling, which needs to be decreased by 10S. As can be seen from fig. 4, after the green timing of phase 1 increases, there are three phases, phase 2, phase 5 and phase 6, which conflict with the green timing of phase 1.

From the above spatial correlation and temporal correlation of phase 1, it can be derived that the collision phase satisfying both the spatial correlation and the temporal correlation with phase 1 is only phase 6, and then the green time of phase 6 needs to be shifted backward, i.e. the green time of phase 6 is shifted backward by 10S, as shown in fig. 5, which shows a schematic diagram of green timing of the signal lamp after timing adjustment of phase 6, and in fig. 5, since the collision phase of phase 6 being phase 1 is determined, green timing in which phase 1 needs to be increased, green timing in which phase 3 needs to be decreased, and green start time of phase 6 needs to be shifted backward by 10S of green timing of each phase are shown in the diagram of fig. 5.

After the timing adjustment for phase 6, there is no conflicting phase for phase 1. Taking phase 6 as a reference phase, it can be calculated that the phases spatially related to phase 6 include phase 1, phase 3 and phase 8, and the phases temporally related to phase 6 include phase 3, phase 5 and phase 4, so that the phase colliding with phase 6 is phase 3, and the timing of phase 3 needs to be shifted backward by 10S, while phase 3 is a compensation phase, and the green timing of phase 3 is reduced by 10S. Then, after the timing adjustment is performed on the phase 3, no conflict phase which is not adjusted exists, and then the phase timing adjustment is completed. Referring to fig. 6, which shows a schematic diagram of adjusted phase timing provided in the embodiment of the present application, it is determined in fig. 6 that the conflicting phase of phase 6 is phase 3, and phase 3 is a compensating phase, then in fig. 6, not only the green light start time of phase 3 is shifted backward by 10S, but also the initial green light timing of phase 3 is reduced by 10S, the black rectangular bar representing the green light duration of phase 3 in fig. 6 is shifted backward by a distance representing 10S, and the corresponding diagonal filled rectangular bar representing the reduction of 10S in original fig. 5 is removed, so that compared with the corresponding original green light timing, the green light timing of phase 3 is shifted backward and also needs to be reduced. Thus, the timing adjustment of the relevant phase is completed, and the adjustment result is as shown in fig. 6, the green timing of the phase 1 is increased by the time length represented by the gray area, the green timing of the phase 3 is decreased by 10S, the green start time is shifted backward, the green start time of the phase 6 is shifted backward, and the green timing of the other phases is not changed.

It should be noted that in this embodiment, only the target light color is adjusted correspondingly, that is, the green light timing is adjusted, the adjustment of other light colors is only completed by matching, and it is necessary to consider whether the interface is adjusted in a fixed period or a variable period, if the interface is adjusted in a fixed period, the duration of other light colors needs to be reduced, and if the interface is adjusted in a variable period, the interface is correspondingly extended.

The embodiment of the application provides a signal lamp timing optimization method, which comprises the steps of determining a first time length of a target lamp color after signal lamp adjustment with a first phase; acquiring phase correlation information of a first phase and a first phase group, wherein the first phase group is a phase except the first phase; determining a second phase in the first phase group that satisfies a target condition with the first phase based on the phase correlation information; and based on the first time length, adjusting the timing of the target lamp color of the signal lamp in the second phase to obtain the timing information of the signal lamp after adjustment. Through phase correlation information among the phases, after one phase is adjusted, other phases are automatically adjusted, and the purpose of efficiently and reasonably optimizing the timing of the signal lamp is achieved.

Referring to fig. 7, an embodiment of the present application provides a signal lamp timing optimization apparatus, including:

a first determining unit 10, configured to determine a first duration of an adjusted target light color of a signal lamp having a first phase, where the phase represents a passing direction of independent control of the signal lamp;

an obtaining unit 20, configured to obtain phase correlation information between the first phase and a first phase group, where the first phase group is a phase other than the first phase;

a second determining unit 30, configured to determine, in the first phase group, a second phase that satisfies a target condition with the first phase based on the phase correlation information;

and the adjusting unit 40 is configured to adjust the timing of the target light color of the signal lamp in the second phase based on the first time length, and obtain timing information of the adjusted signal lamp.

The embodiment of the application provides a signal lamp timing optimization device, wherein a first determining unit determines a first time length of a target lamp color after signal lamp adjustment with a first phase; the acquisition unit acquires phase correlation information of a first phase and a first phase group, the first phase group being a phase other than the first phase; a second determination unit determines, in the first phase group, a second phase satisfying a target condition with the first phase based on the phase correlation information; the adjusting unit adjusts the timing of the target light color of the signal lamp in the second phase based on the first duration to obtain the timing information of the adjusted signal lamp. Through phase correlation information among the phases, after one phase is adjusted, other phases are automatically adjusted, and the purpose of efficiently and reasonably optimizing the timing of the signal lamp is achieved.

In one embodiment, the acquisition unit includes:

the first obtaining subunit is configured to obtain spatial association information between the first phase and each phase in the first phase group, where the spatial association indicates that there is an association between the first phase and a spatial motion trajectory of the phase in the first phase group;

and the second acquisition subunit is used for acquiring the time correlation information of the first phase and each phase in the first phase group, wherein the time correlation represents that the first phase and the phase in the first phase group have time correlation when the lamp color is the same.

Correspondingly, the second determining unit includes:

a first determining subunit, configured to determine, based on the spatial correlation information and the temporal correlation information, a phase in the first phase group that is spatially correlated and temporally correlated with the first phase at the same time, and determine the phase as a second phase.

Optionally, the adjusting unit includes:

a second determining subunit configured to determine, based on the first time length, an increase time length of a target light color of the signal lamp having the first phase;

and the first adjusting subunit is used for shifting the starting time of the target light color of the signal lamp in the second phase back by the adding duration to obtain the timing information of the adjusted signal lamp.

Optionally, the apparatus further comprises:

a third determining subunit configured to determine, based on phase association information of the second phase and a second phase group, a third phase in the second phase group that satisfies a target condition, the second phase group being a phase other than the first phase and the second phase;

the adjusting unit is further configured to adjust the timing of the target light color of the signal lamp in the third phase based on the first duration, and obtain timing information of the adjusted third phase.

In a possible real-time manner, the adjusting unit is specifically configured to:

detecting whether the third phase is a compensated phase of the first phase;

Optionally, the adjusting unit further includes:

and the period adjusting subunit is used for adjusting the time length of the associated light color of the signal lamp and the target light color according to the period time length of the signal lamp after responding to the adjustment of the timing of the target light color of the signal lamp if the timing of the signal lamp is adjusted to be the fixed period adjustment, so as to obtain the timing information of the signal lamp.

In another embodiment, the apparatus further comprises:

a detection unit for detecting whether there is an associated signal lamp corresponding to the adjusted signal lamp;

and the association adjusting unit is used for adjusting the time distribution of the associated signal lamp based on the adjusted time distribution information of the signal lamp to obtain the adjusted time distribution information of the associated signal lamp if the time distribution information of the associated signal lamp is the adjusted time distribution information of the associated signal lamp.

It should be noted that, for the specific implementation of each unit in the present embodiment, reference may be made to the corresponding content in the foregoing, and details are not described here.

In the embodiment of the application, the electronic equipment is further provided, and the technical scheme is mainly used for efficiently and reasonably optimizing the timing of the signal lamp. Specifically, the electronic device in this embodiment may include the following structure:

a processor for executing the application to implement:

It should be noted that, the specific implementation of the processor in the present embodiment may refer to the corresponding content in the foregoing, and is not described in detail here.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A signal lamp timing optimization method comprises the following steps:

2. The method of claim 1, the obtaining phase association information for the first phase and first phase group comprising:

3. The method of claim 2, the determining, based on the phase correlation information, a second phase that satisfies a target condition with the first phase, comprising:

4. The method of claim 1, wherein the adjusting the timing of the target lamp color of the signal lamp in the second phase based on the first time duration to obtain the adjusted timing information of the signal lamp comprises:

5. The method of claim 1, further comprising:

determining a third phase satisfying a target condition in a second phase group based on phase correlation information of the second phase and the second phase group, wherein the second phase group is a phase except the first phase and the second phase;

6. The method of claim 5, wherein the adjusting the timing of the target lamp color of the signal lamp in the third phase based on the first time duration to obtain the adjusted timing information in the third phase comprises:

detecting whether the third phase is a compensated phase of the first phase;

7. The method of claim 1, wherein the obtaining of the adjusted timing information of the signal lamp comprises:

8. The method of claim 1, further comprising:

9. A signal timing optimization device, comprising:

10. An electronic device, comprising:

a processor for executing the application to implement: