CN116129662A - Intersection vehicle passing control method and device - Google Patents
Intersection vehicle passing control method and device Download PDFInfo
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- CN116129662A CN116129662A CN202211533664.5A CN202211533664A CN116129662A CN 116129662 A CN116129662 A CN 116129662A CN 202211533664 A CN202211533664 A CN 202211533664A CN 116129662 A CN116129662 A CN 116129662A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/081—Plural intersections under common control
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Abstract
The invention discloses a method and a device for controlling traffic of vehicles at an intersection, which relate to the technical field of intelligent networking and comprise the following steps: acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit; determining an outlet road section and an inlet road section corresponding to the target road section, and respectively corresponding to the outlet road section and the inlet road section; calculating a congestion index corresponding to a target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate; if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current bearing capacity of the lane; allocating the remaining lane capacity to the entrance section; and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guiding screen so as to control the vehicles at the intersection to pass. By applying the technical scheme, the number of vehicles entering the intersection can be accurately controlled.
Description
Technical Field
The invention relates to the technical field of intelligent networking, in particular to a method and a device for controlling traffic of vehicles at an intersection.
Background
Along with the continuous increase of vehicles, road condition information is more and more complex, and how to effectively avoid intersection congestion is a technical problem to be solved currently.
At present, the traffic light time length related to the traffic direction is generally adjusted according to the number of vehicles waiting to pass on the road and the speed of the vehicles passing through the road end so as to realize the control of the vehicle passing. However, in this way, vehicles can rob to enter the intersection at the time of the yellow light, so this way does not have a way to truly control the number of vehicles entering the intersection, and when the intersection capacity overflows, and insufficient space cannot be provided for the vehicles in the intersection, the vehicles in multiple directions will be jammed at the intersection, thereby causing traffic jam and even traffic paralysis.
Disclosure of Invention
The invention provides a method and a device for controlling traffic of vehicles at an intersection, which mainly can accurately control the quantity of vehicles entering the intersection and avoid blocking the intersection.
According to a first aspect of an embodiment of the present invention, there is provided an intersection vehicle passing control method, including:
acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit;
determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
Calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane;
if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained;
and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
According to a second aspect of the embodiment of the present invention, there is provided an intersection vehicle passage control device including:
the acquisition unit is used for acquiring the lane capacity and the current lane bearing capacity of the target road section associated with the intersection exit;
the determining unit is used for determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
the calculating unit is used for calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
The calculating unit is further configured to calculate a remaining lane capacity corresponding to the target road section according to the lane capacity and the current bearing capacity of the lane if congestion of the target road section is determined according to the congestion index;
the distribution unit is used for distributing the residual lane capacity to a plurality of the entrance sections if a plurality of the entrance sections exist, so as to obtain a residual lane capacity distribution result;
and the issuing unit is used for issuing corresponding vehicle guidance information to the flow guiding screen according to the remaining lane capacity distribution result so as to control the vehicles at the intersection to pass.
According to a third aspect of embodiments of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit;
determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
If the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane;
if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained;
and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
According to a fourth aspect of embodiments of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the program:
acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit;
determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
If the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane;
if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained;
and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
The innovation points of the embodiment of the invention include:
1. the precise control of the number of vehicles entering the intersection by using the capacity assessment model is one of the innovative points of the embodiment of the invention.
2. On the premise of no intersection congestion, the maximization of the traffic flow of the intersection is realized by utilizing an intersection real-time feedback mechanism, and the improvement of the traffic efficiency of vehicles is one of the innovation points of the embodiment of the invention.
3. By adjusting the green time of the key road section where congestion occurs, the congestion situation is relieved.
Compared with the prior art, the method and the device for controlling the traffic of the intersection provided by the invention have the advantages that compared with the mode of adjusting the time length of the traffic lights according to the number of vehicles waiting to pass in the road and the speed of the vehicles passing through the road end, the method and the device for controlling the traffic of the intersection can acquire the lane capacity and the current bearing capacity of the target road section associated with the exit of the intersection, determine the exit road section and the entrance road section corresponding to the target road section, and the exit vehicle speed and the entrance vehicle speed respectively corresponding to the exit road section and the entrance road section, calculate the congestion index corresponding to the target road section according to the lane capacity, the current bearing capacity of the lane and the entrance vehicle speed, calculate the remaining lane capacity corresponding to the target road section if the congestion index is determined according to the congestion index, and allocate the remaining lane capacity to a plurality of entrance road sections if the entrance road section is provided, obtain the remaining capacity allocation result, and finally send corresponding guidance vehicle traffic information to the intersection according to the remaining capacity allocation result. Therefore, under the condition that the target road section is congested, the invention calculates the residual lane capacity of the target road section, distributes the residual lane capacity to the entrance road section in proportion, and simultaneously displays information by the guide screen, thereby accurately controlling the number of vehicles entering the intersection and avoiding the intersection from being blocked.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic flow chart of a method for controlling traffic at an intersection according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the overall architecture of an intersection vehicle traffic control system according to an embodiment of the present invention;
FIG. 3 shows a schematic diagram of a road segment provided by an embodiment of the present invention;
fig. 4 is a schematic flow chart of another intersection vehicle traffic control method according to an embodiment of the present invention;
Fig. 5 shows a schematic structural diagram of an intersection vehicle traffic control device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another intersection vehicle traffic control device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments of the present invention and the accompanying drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
The prior art can not accurately control the number of vehicles entering the intersection, and is easy to cause the intersection to be blocked.
In order to overcome the above-mentioned drawbacks, an embodiment of the present invention provides a method for controlling traffic at an intersection, as shown in fig. 1, the method includes:
and 101, acquiring the lane capacity and the current carrying capacity of the lane of the target road section associated with the intersection exit.
The target road section is a road section connected with the intersection outlet, the target road section can be one, two or more, and in addition, the lane capacity is the maximum bearing capacity of the target road section under ideal conditions.
The embodiment of the invention is mainly suitable for scenes of accurately controlling the traffic quantity of vehicles at the intersections. The execution main body of the embodiment of the invention is a device capable of accurately controlling the traffic quantity of vehicles at an intersection, such as an intersection calculating unit.
In order to avoid blocking an intersection, an embodiment of the present invention provides an intersection vehicle traffic control system, as shown in fig. 2, where one intersection corresponds to one subsystem unit, the subsystem unit includes multiple road section sensing units and one intersection calculating unit, and the subsystem units of different intersections can communicate through a global communication network. The road section sensing unit comprises 4 types of sensors, namely a traffic flow sensor, a network vehicle or OBU, road side equipment RSU and an induction screen, wherein the number of each type of sensor is determined by the length of the road section and the number of lanes, and the traffic flow sensor is responsible for monitoring the traffic flow outlet speed, the vehicle density and the vehicle running direction; the internet-connected vehicle or the OBU is connected with the RSU, and can report vehicle information and receive road side information; the RSU is responsible for accessing vehicles entering the road section in real time and communicating with the intersection calculating unit; the induction screen is responsible for displaying the current limiting information pushed by the intersection calculating unit for viewing by the non-internet-connected vehicle. In addition, the intersection calculating unit comprises a common commercial server, a camera and a software calculating unit, wherein the common commercial server is used for data storage and software calculation; the camera is used for identifying and calculating the visual model so as to monitor the running state of the intersection; the software calculating unit comprises a flow calculating unit, a feedback unit and a control unit, wherein the flow calculating unit is used for calculating the road section congestion index in real time, the feedback unit is used for calculating the traffic efficiency of the road junction in real time, and the control unit is used for controlling the duration of the traffic light and the state of the induction screen according to the road section congestion index and the traffic efficiency of the road junction.
For the embodiment of the invention, in order to accurately control the number of vehicles entering the intersection and avoid the intersection congestion, the lane capacity of the target road section is measured according to road network information, and meanwhile, the current bearing capacity of the lane is obtained by using a traffic flow sensor so as to construct a capacity model of the target road section.
Step 102, determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively.
The exit traffic flow rate is the exit rate from the target road section to the exit road section, and the entrance traffic flow rate is the entrance rate from the entrance road section to the target road section.
In order to avoid ambiguity, the embodiment of the invention has a clear definition on a road section, wherein 3 road sections are included in fig. 3, the intersection of the road section 1 and the road section 2 is the intersection 1, the intersection of the road section 2 and the road section 3 is the intersection 2, the direction of the traffic is shown as the arrow direction, for the intersection 1, the target road section associated with the outlet of the intersection 1 is the road section 2, the inlet road section corresponding to the road section 2 is the road section 1, the speed from the road section 1 (inlet road section) to the road section 2 is the inlet traffic speed, the outlet road section corresponding to the road section 2 is the road section 3, and the speed from the road section 2 to the road section 3 (outlet road section) is the outlet traffic speed.
For the embodiment of the invention, the outlet road section and the inlet road section corresponding to the target road section can be obtained from road network information, the outlet traffic flow rate can be obtained through statistics of a traffic flow sensor, a mapping relationship exists between the outlet road section and the outlet traffic flow rate, the outlet traffic flow rate from the target road section to the outlet road section can be determined through the outlet road section, the inlet traffic flow rate can be obtained through statistics of the traffic flow sensor, a mapping relationship exists between the inlet road section and the inlet traffic flow rate, and the inlet traffic flow rate from the inlet road section to the target road section can be determined through the inlet road section.
Further, the remaining lane capacity corresponding to the target road section can be calculated according to the lane capacity and the current bearing capacity of the lane, and then a capacity model of the target road section is constructed according to the lane capacity corresponding to the target road section, the current bearing capacity of the lane, the remaining lane capacity, the outlet road section, the outlet traffic flow rate and the inlet traffic flow rate corresponding to the target road section, wherein the description object of the capacity model is the road section, and the specific table is as follows:
| parameter type | Parameter representation |
| Exit traffic flow rate | OV-i |
| Outlet section | OR2OV |
| Lane capacity | C |
| Current bearing capacity of lane | CC |
| Remaining lane capacity | SC |
| Inlet traffic flow rate | IV-i |
| Entrance road section | IR2IV |
When the target road section has a plurality of outlet road sections or a plurality of inlet road sections, a plurality of outlet traffic flow rates or a plurality of inlet traffic flow rates exist, IV-i can represent the inlet traffic flow rate from any one of the inlet road sections to the target road section, OV-i can represent the outlet traffic flow rate from the target road section to any one of the outlet road sections, and the value of i can be 0. Further, the remaining lane capacity may be negative, indicating that the target road has been overloaded. In this way, a capacity model of the target road section can be constructed in the above manner, so that the number of vehicles entering the intersection can be precisely controlled according to the capacity model.
And 103, calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate.
The congestion indexes comprise a capacity congestion index, a rate congestion index and an expected congestion index, wherein the capacity congestion index represents the current congestion degree, the rate congestion index represents the possibility that a current control system possibly causes congestion, the expected congestion index represents the possibility that the congestion occurs in the future due to the increase of traffic flow, and the smaller the value of the congestion index is, the more congestion is represented in a target road section.
For the embodiment of the invention, after the capacity model corresponding to the target road section is built, the congestion index corresponding to the target road section is calculated according to the lane capacity, the current bearing capacity of the lane, the outlet traffic flow rate corresponding to the outlet road section and the inlet traffic flow rate corresponding to the inlet road section in the capacity model, so that whether the target road section is congested currently is judged according to the congestion index, and if so, the number of vehicles entering the intersection is required to be controlled. Based on this, step 103 specifically includes: calculating a first capacity difference between the lane capacity and the current bearing capacity of the lane, and dividing the first capacity difference by the lane capacity to obtain the capacity congestion index; calculating a speed difference according to the outlet traffic flow rate corresponding to the outlet road section and the inlet traffic flow rate corresponding to the inlet road section, and dividing the speed difference by the outlet speed to obtain the speed congestion index; and determining the target capacity of the inlet road section flowing into the target road section, calculating a second capacity difference between the current bearing capacity of the lane and the target capacity, and dividing the second capacity difference by the current bearing capacity of the lane to obtain the expected congestion index.
The specific calculation formula of the capacity congestion index is as follows:
capacity congestion index= (lane capacity-current load capacity of lane)/lane capacity
Further, when calculating the rate congestion index, calculating a rate difference according to the outlet traffic flow rate corresponding to the outlet road section and the inlet traffic flow rate corresponding to the inlet road section, and dividing the rate difference by the outlet rate to obtain the rate congestion index, including: if a plurality of the inlet road sections and a plurality of the outlet road sections exist, calculating a first outlet velocity sum and an inlet velocity sum according to the outlet traffic flow velocity respectively corresponding to the outlet road sections and the inlet traffic flow velocity respectively corresponding to the inlet road sections, and subtracting the first outlet velocity sum from the inlet velocity sum to obtain the velocity difference; and dividing the rate difference by the sum of the first exit rates to obtain the rate congestion index. The specific calculation formula of the rate congestion index is as follows:
rate congestion index = (first exit rate sum-entrance rate sum)/first exit rate sum
Further, in calculating the expected congestion index, the determining the target capacity of the entry road segment flowing into the target road segment includes: if a plurality of the inlet road sections exist, determining the road section capacity corresponding to each inlet road section; calculating a second sum of the exit rates of each of the inlet road segments to its associated outlet road segment; calculating the capacity ratio of each inlet road section flowing into the target road section according to the sum of the inlet speed corresponding to each inlet road section and the second outlet speed; calculating the capacity of each inlet road section flowing into the target road section according to the road section capacity and the capacity proportion corresponding to each inlet road section; and adding the capacities of the inlet road sections flowing into the target road sections to obtain the target capacity. The specific calculation formula of the expected congestion index is as follows:
Expected congestion index= { lane current load-road capacity of the sigma entrance road section (entrance speed of entrance road section to target road section/second exit speed sum) }/lane current load
According to the method, the capacity congestion index, the rate congestion index and the expected congestion index corresponding to the target road section can be calculated respectively, so that whether the target road section is congested or not can be judged according to the congestion index.
And 104, if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current bearing capacity of the lane.
For the embodiment of the present invention, the smaller the values of the capacity congestion index, the rate congestion index and the expected congestion index, the more congested the target road section is represented, so whether the target road section is congested can be determined according to the value of the congestion index, based on which step 104 specifically includes: determining that the target road section is congested when any one of the capacity congestion index, the rate congestion index and the expected congestion index is smaller than a preset threshold value; and subtracting the current bearing capacity of the lane from the lane capacity to obtain the remaining lane capacity. The preset threshold may be set according to an actual service requirement, for example, the preset threshold is set to 10%, and the preset thresholds of the capacity congestion index, the rate congestion index and the expected congestion index may be different.
And 105, if a plurality of the entrance sections exist, distributing the residual lane capacity to the plurality of the entrance sections to obtain a residual lane capacity distribution result.
With the embodiment of the invention, when at least two entrance sections exist in the target section, the remaining lane capacity can be allocated to the entrance sections according to the entrance rate ratio between the entrance sections, so that the number of vehicles entering the intersection per entrance section can be accurately controlled.
And 106, according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
For the embodiment of the invention, after the distribution of the residual lane capacity is completed, corresponding display information can be issued to the induction screen according to the distribution result of the residual lane capacity and the vehicle information of the intersection, for example, if the left turning direction capacity is only X, the vehicle with the license plate number xxx can advance into the diversion lane and can not enter the intersection, and thus, the control of the number of the vehicles entering the intersection can be realized.
According to the intersection vehicle traffic control method provided by the embodiment of the invention, under the condition that the target road section is congested, the remaining lane capacity of the target road section is calculated and is distributed to the entrance road section in proportion, and meanwhile, the information display is carried out by the guide screen, so that the number of vehicles entering the intersection can be accurately controlled, and the intersection blockage can be avoided.
Further, as a refinement and extension to the above embodiment, the embodiment of the present invention provides another intersection vehicle traffic control method, as shown in fig. 4, where the method includes:
For the embodiment of the present invention, the process of obtaining the lane capacity and the current lane bearing capacity is the same as that of step 101, and will not be described here again.
For the embodiment of the invention, the remaining lane capacity corresponding to the target road section can be calculated according to the lane capacity and the current bearing capacity of the lane, and then the capacity model of the target road section is constructed according to the lane capacity, the current bearing capacity of the lane and the remaining lane capacity corresponding to the target road section, and the outlet road section, the inlet road section, the outlet traffic flow rate and the inlet traffic flow rate corresponding to the target road section.
And 203, calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate.
For the embodiment of the present invention, the specific process of calculating the congestion index corresponding to the target road segment is identical to step 103, and will not be described herein.
And 204, if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current bearing capacity of the lane.
For the embodiment of the invention, when any one of the calculated capacity congestion index, the rate congestion index and the expected congestion index is smaller than a preset threshold value, determining the congestion of the target road section, and subtracting the current bearing capacity of the lane from the lane capacity to obtain the remaining lane capacity.
And 205, if a plurality of the entrance sections exist, distributing the residual lane capacity to the plurality of the entrance sections to obtain a residual lane capacity distribution result.
For the embodiment of the present invention, in order to accurately control the vehicle data entering the intersection, step 205 specifically includes: calculating the inlet speed ratio among a plurality of inlet road sections according to the inlet traffic flow speeds respectively corresponding to the inlet road sections; and distributing the residual lane capacity to a plurality of entrance road sections according to the entrance speed ratio to obtain a residual lane capacity distribution result.
For example, the inlet rate ratio between inlet section 1, inlet section 2, and inlet section 3 is 1:2:2. The remaining lane capacity may be allocated to the section 1, the section 2, and the section 3 according to the ratio.
And 206, according to the remaining lane capacity allocation result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
For the embodiment of the invention, when the vehicle is controlled to pass through, aiming at any one of a plurality of entrance road sections, if the fact that the any one entrance road section has no capacity is determined according to the remaining lane capacity allocation result, a green light is adjusted to be a red light, or the red light is kept; if the capacity of any one of the entry road sections is determined according to the remaining lane capacity allocation result, judging whether the current traffic light time exists; and if the vehicle is currently at the green time, allowing the vehicle to pass through the intersection, and updating the capacity of any one of the entrance road sections. After updating the capacity, continuing to judge whether the capacity exists in any one of the entrance road sections, and repeating the above process to realize accurate control of vehicles entering the intersection.
The primary aim of the embodiment of the invention is to avoid the congestion of the intersection, and the maximization of the traffic flow of the intersection is needed to be realized as much as possible on the premise that the intersection is not congested so as to improve the overall running efficiency of the vehicle. Based on this, it is necessary to detect in real time whether there are vehicles that stay at the intersection without entering the target road section in time, so as to adjust the number of vehicles entering the intersection each time according to the detection result.
And step 208, if the vehicles which do not enter the target road section in time and stay at the intersection exist, reducing the number of vehicles passing next time, and not increasing the number of vehicles passing in a preset time.
The preset time length can be set according to actual service requirements, for example, the preset time length is 30 minutes.
For the embodiment of the invention, if the vehicles which do not enter the target road section in time and stay at the intersection exist, the situation that the number of vehicles entering the intersection is increased continuously next time can cause the intersection to be congested is indicated, so that the number of vehicles passing through needs to be reduced when the vehicles are released next time, and the number of vehicles does not increase any more within a certain period of time.
For the embodiment of the invention, if no vehicles which do not enter the target road section in time and stay at the intersection exist, the number of vehicles passing through can be tried to be increased when the vehicles are released next time, and the vehicles at the intersection are continuously detected, so that the maximization of the traffic flow of the intersection can be realized as much as possible under the condition of ensuring that the intersection is not blocked, and the overall running efficiency of the vehicles is improved.
In a specific application scene, adjacent road sections can form a directed acyclic graph, and the global communication module can find a blocked key road section according to the graph and can relieve the road section blocking condition by adjusting the passing time of the key road section. Based thereon, the method further comprises: calculating a congestion index of the exit road section; if the outlet road section is determined to be not congested according to the congestion index of the outlet road section, and the target road section is determined to be congested according to the congestion index of the target road section, judging whether the green light time of the outlet direction of the target road section is temporarily lengthened or not; if the green light time of the exit direction of the target road section is not lengthened temporarily, determining the target road section as a key road section, and prolonging the green light time of the exit direction of the key road section. The target link may represent any one of the links.
Specifically, when determining a critical road section, the congestion index of an exit road section corresponding to the target road section needs to be calculated first, if the exit road section is determined to be not congested according to the capacity congestion index and the rate congestion index of the exit road section, meanwhile, the congestion of the target road section is determined according to the capacity congestion index of the target road section, and the approach congestion of the target road section is determined according to the rate congestion index and the expected congestion index of the target road section, whether the green light time of the exit direction of the target road section is temporarily lengthened or not needs to be determined, if the green light time of the target road section is not temporarily lengthened, the fact that the congestion occurs due to the target road section is indicated, and therefore the target road section is determined to be the critical road section, and in order to alleviate the congestion condition of the critical road section, the green light time of the critical road section needs to be prolonged.
According to the another intersection vehicle traffic control method provided by the embodiment of the invention, under the condition that the target road section is congested, the remaining lane capacity of the target road section is calculated and is distributed to the entrance road section in proportion, and meanwhile, the information display is carried out by the guide screen, so that the number of vehicles entering the intersection can be accurately controlled, and the intersection blockage can be avoided.
Further, as a specific implementation of fig. 1, an embodiment of the present invention provides an intersection vehicle traffic control device, as shown in fig. 5, where the device includes: an acquisition unit 31, a determination unit 32, a calculation unit 33, an allocation unit 34, and a delivery unit 35.
The acquiring unit 31 may be configured to acquire a lane capacity and a current lane bearing capacity of a target link associated with an intersection exit.
The determining unit 32 may be configured to determine an outlet road segment and an inlet road segment corresponding to the target road segment, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road segment and the inlet road segment, respectively.
The calculating unit 33 may be configured to calculate a congestion index corresponding to the target link according to the lane capacity, the current load capacity of the lane, the exit traffic flow rate, and the entrance traffic flow rate.
The calculating unit 33 may be further configured to calculate a remaining lane capacity corresponding to the target link according to the lane capacity and the current load of the lane if congestion of the target link is determined according to the congestion index.
The allocation unit 34 may be configured to allocate the remaining lane capacity to a plurality of the entry segments if there are a plurality of the entry segments, so as to obtain a remaining lane capacity allocation result.
The issuing unit 35 may be configured to issue corresponding vehicle guidance information to the flow guiding screen according to the remaining lane capacity allocation result, so as to control the vehicle passing at the intersection.
In a specific application scenario, the congestion index includes a capacity congestion index, a rate congestion index, and an expected congestion index, and the calculating unit 33, as shown in fig. 6, includes a first calculating module 331, a second calculating module 332, and a third calculating module 333.
The first calculating module 331 may be configured to calculate a first capacity difference between the lane capacity and the current load capacity of the lane, and divide the first capacity difference by the lane capacity to obtain the capacity congestion index.
The second calculating module 332 may be configured to calculate a rate difference according to an outlet traffic flow rate corresponding to the outlet road section and an inlet traffic flow rate corresponding to the inlet road section, and divide the rate difference by the outlet rate to obtain the rate congestion index.
The third calculation module 333 may be configured to determine a target capacity of the entrance road segment flowing into the target road segment, calculate a second capacity difference between the current load capacity of the lane and the target capacity, and divide the second capacity difference by the current load capacity of the lane to obtain the expected congestion index.
Further, the second calculating module 332 may specifically be configured to calculate a first sum of the exit velocity and a sum of the entrance velocity according to the exit traffic velocity corresponding to each of the exit road segments and the entrance traffic velocity corresponding to each of the entrance road segments if there are a plurality of the exit road segments and the exit road segments, and subtract the first sum of the exit velocity and the sum of the entrance velocity to obtain the velocity difference; and dividing the rate difference by the sum of the first exit rates to obtain the rate congestion index.
Further, the third calculation module 333 may specifically be configured to determine a link capacity corresponding to each of the entry links if there are a plurality of entry links; calculating a second sum of the exit rates of each of the inlet road segments to its associated outlet road segment; calculating the capacity ratio of each inlet road section flowing into the target road section according to the sum of the inlet speed corresponding to each inlet road section and the second outlet speed; calculating the capacity of each inlet road section flowing into the target road section according to the road section capacity and the capacity proportion corresponding to each inlet road section; and adding the capacities of the inlet road sections flowing into the target road sections to obtain the target capacity.
In a specific application scenario, the calculating unit 33 may be specifically configured to determine that the target road segment is congested when any one of the capacity congestion index, the rate congestion index, and the expected congestion index is less than a preset threshold; and subtracting the current bearing capacity of the lane from the lane capacity to obtain the remaining lane capacity.
In a specific application scenario, the allocation unit 34 includes a fourth calculation module 341 and an allocation module 342.
The fourth calculating module 341 may be configured to calculate an inlet rate ratio between the plurality of inlet road segments according to inlet traffic flow rates corresponding to the plurality of inlet road segments respectively.
The allocation module 342 may be configured to allocate the remaining lane capacity to a plurality of the entry road segments according to the entry rate ratio, so as to obtain the remaining lane capacity allocation result.
In a specific application scenario, the apparatus further comprises an updating unit 36.
The adjusting unit 36 may be configured to adjust a green light to a red light or keep the red light for any one of the plurality of entry segments if it is determined that the any one of the entry segments has no capacity according to the remaining lane capacity allocation result; if the capacity of any one of the entry road sections is determined according to the remaining lane capacity allocation result, judging whether the current traffic light time exists; and if the vehicle is currently at the green time, allowing the vehicle to pass through the intersection, and updating the capacity of any one of the entrance road sections.
In a specific application scenario, the device further comprises a detection unit 37.
The adjusting unit 37 may be configured to detect whether there is a vehicle that does not enter the target road section in time and stays at the intersection; if vehicles which do not enter the target road section in time and stay at the intersection exist, the number of vehicles passing next time is reduced, and the number of vehicles passing is not increased within a preset time length; and if no vehicles which do not enter the target road section in time and stay at the intersection exist, increasing the number of vehicles passing next time.
In a specific application scenario, the device further comprises a decision unit 38.
The calculation unit 33 may also be configured to calculate a congestion index of the egress road section.
The determining unit 38 may be configured to determine whether the green time of the exit direction of the target road segment is temporarily lengthened if it is determined that the exit road segment is not congested according to the congestion index of the exit road segment and if it is determined that the target road segment is congested according to the congestion index of the target road segment.
The determining unit 32 may be further configured to determine that the target road segment is a critical road segment if the green time of the exit direction of the target road segment is not temporarily lengthened, and lengthen the green time of the exit direction of the critical road segment.
It should be noted that, other corresponding descriptions of each functional module related to the intersection vehicle traffic control device provided by the embodiment of the present invention may refer to corresponding descriptions of the method shown in fig. 1, and are not repeated herein.
Based on the above method as shown in fig. 1, correspondingly, the embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, implements the following steps: acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit; determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively; calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate; if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane; if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained; and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
Based on the embodiment of the method shown in fig. 1 and the device shown in fig. 5, the embodiment of the invention further provides a physical structure diagram of an electronic device, as shown in fig. 7, where the electronic device includes: a processor 41, a memory 42, and a computer program stored on the memory 42 and executable on the processor, wherein the memory 42 and the processor 41 are both arranged on a bus 43, the processor 41 performing the following steps when said program is executed: acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit; determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively; calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate; if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane; if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained; and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
According to the embodiment of the invention, under the condition that the target road section is congested, the remaining lane capacity of the target road section is calculated, the remaining lane capacity is proportionally distributed to the entrance road section, and meanwhile, the information display is carried out by the flow guide screen, so that the number of vehicles entering the intersection can be accurately controlled, and the intersection is prevented from being blocked.
Those of ordinary skill in the art will appreciate that: the drawing is a schematic diagram of one embodiment and the modules or flows in the drawing are not necessarily required to practice the invention.
Those of ordinary skill in the art will appreciate that: the modules in the apparatus of the embodiments may be distributed in the apparatus of the embodiments according to the description of the embodiments, or may be located in one or more apparatuses different from the present embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An intersection vehicle passing control method, characterized by comprising:
acquiring the lane capacity and the current carrying capacity of a lane of a target road section associated with an intersection exit;
determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
if the congestion of the target road section is determined according to the congestion index, calculating the remaining lane capacity corresponding to the target road section according to the lane capacity and the current carrying capacity of the lane;
if a plurality of the entrance road sections exist, the remaining lane capacity is distributed to a plurality of the entrance road sections, and a remaining lane capacity distribution result is obtained;
and according to the remaining lane capacity distribution result, corresponding vehicle guidance information is issued to the flow guide screen so as to control the vehicles at the intersection to pass.
2. The method of claim 1, wherein the congestion index comprises a capacity congestion index, a rate congestion index, and an expected congestion index, and wherein calculating the congestion index corresponding to the target road segment based on the lane capacity, the current load capacity of the lane, the exit traffic rate, and the entrance traffic rate comprises:
Calculating a first capacity difference between the lane capacity and the current bearing capacity of the lane, and dividing the first capacity difference by the lane capacity to obtain the capacity congestion index;
calculating a speed difference according to the outlet traffic flow rate corresponding to the outlet road section and the inlet traffic flow rate corresponding to the inlet road section, and dividing the speed difference by the outlet speed to obtain the speed congestion index;
and determining the target capacity of the inlet road section flowing into the target road section, calculating a second capacity difference between the current bearing capacity of the lane and the target capacity, and dividing the second capacity difference by the current bearing capacity of the lane to obtain the expected congestion index.
3. The method of claim 2, wherein calculating a rate difference from the outlet traffic flow rate corresponding to the outlet road segment and the inlet traffic flow rate corresponding to the inlet road segment and dividing the rate difference by the outlet rate to obtain the rate congestion index comprises:
if a plurality of the inlet road sections and a plurality of the outlet road sections exist, calculating a first outlet velocity sum and an inlet velocity sum according to the outlet traffic flow velocity respectively corresponding to the outlet road sections and the inlet traffic flow velocity respectively corresponding to the inlet road sections, and subtracting the first outlet velocity sum from the inlet velocity sum to obtain the velocity difference;
Dividing the rate difference by the sum of the first exit rates to obtain the rate congestion index;
the determining the target capacity of the entry road segment flowing into the target road segment includes:
if a plurality of the inlet road sections exist, determining the road section capacity corresponding to each inlet road section;
calculating a second sum of the exit rates of each of the inlet road segments to its associated outlet road segment;
calculating the capacity ratio of each inlet road section flowing into the target road section according to the sum of the inlet speed corresponding to each inlet road section and the second outlet speed;
calculating the capacity of each inlet road section flowing into the target road section according to the road section capacity and the capacity proportion corresponding to each inlet road section;
and adding the capacities of the inlet road sections flowing into the target road sections to obtain the target capacity.
4. The method according to claim 2, wherein if the congestion index determines that the target link is congested, calculating a remaining lane capacity corresponding to the target link according to the lane capacity and the current lane bearing capacity includes:
determining that the target road section is congested when any one of the capacity congestion index, the rate congestion index and the expected congestion index is smaller than a preset threshold value;
And subtracting the current bearing capacity of the lane from the lane capacity to obtain the remaining lane capacity.
5. The method according to claim 1, wherein said allocating the remaining lane capacity to a plurality of the entry road segments to obtain a remaining lane capacity allocation result includes:
calculating the inlet speed ratio among a plurality of inlet road sections according to the inlet traffic flow speeds respectively corresponding to the inlet road sections;
distributing the remaining lane capacity to a plurality of entrance road sections according to the entrance rate proportion to obtain a remaining lane capacity distribution result;
the method further comprises the steps of:
for any one of the plurality of entrance road sections, if the capacity of any one of the entrance road sections is determined to be free from the remaining lane capacity allocation result, the green light is adjusted to be a red light or the red light is kept;
if the capacity of any one of the entry road sections is determined according to the remaining lane capacity allocation result, judging whether the current traffic light time exists;
and if the vehicle is currently at the green time, allowing the vehicle to pass through the intersection, and updating the capacity of any one of the entrance road sections.
6. The method according to any one of claims 1-5, further comprising:
Detecting whether a vehicle which does not enter the target road section in time and stays at the intersection exists or not;
if vehicles which do not enter the target road section in time and stay at the intersection exist, the number of vehicles passing next time is reduced, and the number of vehicles passing is not increased within a preset time length;
and if no vehicles which do not enter the target road section in time and stay at the intersection exist, increasing the number of vehicles passing next time.
7. The method according to any one of claims 1-5, further comprising:
calculating a congestion index of the exit road section;
if the outlet road section is determined to be not congested according to the congestion index of the outlet road section, and the target road section is determined to be congested according to the congestion index of the target road section, judging whether the green light time of the outlet direction of the target road section is temporarily lengthened or not;
if the green light time of the exit direction of the target road section is not lengthened temporarily, determining the target road section as a key road section, and prolonging the green light time of the exit direction of the key road section.
8. An intersection vehicle passing control device, characterized by comprising:
the acquisition unit is used for acquiring the lane capacity and the current lane bearing capacity of the target road section associated with the intersection exit;
The determining unit is used for determining an outlet road section and an inlet road section corresponding to the target road section, and an outlet traffic flow rate and an inlet traffic flow rate corresponding to the outlet road section and the inlet road section respectively;
the calculating unit is used for calculating a congestion index corresponding to the target road section according to the lane capacity, the current carrying capacity of the lane, the outlet traffic flow rate and the inlet traffic flow rate;
the calculating unit is further configured to calculate a remaining lane capacity corresponding to the target road section according to the lane capacity and the current bearing capacity of the lane if congestion of the target road section is determined according to the congestion index;
the distribution unit is used for distributing the residual lane capacity to a plurality of the entrance sections if a plurality of the entrance sections exist, so as to obtain a residual lane capacity distribution result;
and the issuing unit is used for issuing corresponding vehicle guidance information to the flow guiding screen according to the remaining lane capacity distribution result so as to control the vehicles at the intersection to pass.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program when executed by the processor implements the steps of the method of any one of claims 1 to 7.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090125160A1 (en) * | 2007-11-13 | 2009-05-14 | Desai Shitalkumar V | Relieving Urban Traffic Congestion |
| JP2011192051A (en) * | 2010-03-15 | 2011-09-29 | Sumitomo Electric Ind Ltd | Congestion determination device and computer program |
| CN103280098A (en) * | 2013-05-23 | 2013-09-04 | 北京交通发展研究中心 | Traffic congestion index calculation method |
| CN105405294A (en) * | 2015-12-30 | 2016-03-16 | 杭州中奥科技有限公司 | Early warning method of traffic congestion roads |
| CN109690646A (en) * | 2017-06-12 | 2019-04-26 | 北京嘀嘀无限科技发展有限公司 | The system and method for analysis and adjustment condition of road surface |
| CN110364002A (en) * | 2019-05-22 | 2019-10-22 | 江苏科创交通安全产业研究院有限公司 | A kind of vehicle three-level Induction Control method and system in Traffic Net |
| JP2020009189A (en) * | 2018-07-09 | 2020-01-16 | 株式会社トヨタマップマスター | Congestion state specifying method, congestion state specifying device, and computer program |
| US20200143672A1 (en) * | 2017-03-31 | 2020-05-07 | Nec Corporation | Traffic congestion estimating device, traffic congestion estimating method, and recording medium storing program thereof |
| CN111915876A (en) * | 2019-05-08 | 2020-11-10 | 储诚茗 | Road traffic control system and control method thereof |
| EP3908013A1 (en) * | 2020-05-07 | 2021-11-10 | T-Mobile USA, Inc. | Management of telecommunications network congestion on roadways |
| CN113706862A (en) * | 2021-08-04 | 2021-11-26 | 同济大学 | Distributed active equalization management and control method considering road network capacity constraint |
| JP2021189734A (en) * | 2020-05-29 | 2021-12-13 | 株式会社東芝 | Traffic condition prediction device, and traffic condition prediction method |
| CN114141032A (en) * | 2022-02-07 | 2022-03-04 | 青岛海信网络科技股份有限公司 | Traffic signal control scheme generation method and equipment |
-
2022
- 2022-12-02 CN CN202211533664.5A patent/CN116129662B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090125160A1 (en) * | 2007-11-13 | 2009-05-14 | Desai Shitalkumar V | Relieving Urban Traffic Congestion |
| JP2011192051A (en) * | 2010-03-15 | 2011-09-29 | Sumitomo Electric Ind Ltd | Congestion determination device and computer program |
| CN103280098A (en) * | 2013-05-23 | 2013-09-04 | 北京交通发展研究中心 | Traffic congestion index calculation method |
| CN105405294A (en) * | 2015-12-30 | 2016-03-16 | 杭州中奥科技有限公司 | Early warning method of traffic congestion roads |
| US20200143672A1 (en) * | 2017-03-31 | 2020-05-07 | Nec Corporation | Traffic congestion estimating device, traffic congestion estimating method, and recording medium storing program thereof |
| CN109690646A (en) * | 2017-06-12 | 2019-04-26 | 北京嘀嘀无限科技发展有限公司 | The system and method for analysis and adjustment condition of road surface |
| JP2020009189A (en) * | 2018-07-09 | 2020-01-16 | 株式会社トヨタマップマスター | Congestion state specifying method, congestion state specifying device, and computer program |
| CN111915876A (en) * | 2019-05-08 | 2020-11-10 | 储诚茗 | Road traffic control system and control method thereof |
| CN110364002A (en) * | 2019-05-22 | 2019-10-22 | 江苏科创交通安全产业研究院有限公司 | A kind of vehicle three-level Induction Control method and system in Traffic Net |
| EP3908013A1 (en) * | 2020-05-07 | 2021-11-10 | T-Mobile USA, Inc. | Management of telecommunications network congestion on roadways |
| JP2021189734A (en) * | 2020-05-29 | 2021-12-13 | 株式会社東芝 | Traffic condition prediction device, and traffic condition prediction method |
| CN113706862A (en) * | 2021-08-04 | 2021-11-26 | 同济大学 | Distributed active equalization management and control method considering road network capacity constraint |
| CN114141032A (en) * | 2022-02-07 | 2022-03-04 | 青岛海信网络科技股份有限公司 | Traffic signal control scheme generation method and equipment |
Non-Patent Citations (1)
| Title |
|---|
| 王福建;龚成宇;马东方;郭伟伟;王殿海;: "采用交通出行量数据的多点联动瓶颈控制方法", 浙江大学学报(工学版), no. 02, pages 54 - 59 * |
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|---|---|
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