Intersection signal timing optimization method, system, device and storage medium

Abstract

The application discloses a kind of intersection signal machine timing optimization method, system, equipment and storage medium, method includes: intersection RSU obtains all network connection vehicle information in monitoring range;According to network connection vehicle information, the vehicle queuing number of lane m in the corresponding traffic direction of phase is calculated as;Intersection RSU obtains the signal timing scheme given by signal machine;According to the queuing vehicle number as and the signal timing scheme given by signal machine, determine the timing optimization scheme of signal machine, and signal machine adjusts the red light signal work according to timing optimization scheme.Compared with prior art, the application generates timing optimization scheme by real-time acquisition of network connection vehicle information by intersection RSU in combination with signal timing information of signal machine, timely adjusts signal timing of each phase in different directions, reduces queuing time of vehicle through intersection, and relieves traffic pressure at intersection.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of intelligent traffic control, and more particularly relates to a method, system, device and storage medium for optimizing the timing of intersection signal machines. BACKGROUND

[0002] With the rapid development of China's economy and the significant improvement of residents' income level, the number of motor vehicles has increased dramatically, and urban traffic demand has also grown. This has led to increasingly serious road traffic congestion, especially at urban intersections, where frequent traffic flow changes pose a great challenge to traffic management. In order to effectively address this challenge, optimizing the signal timing at intersections has become an important research direction. The present application aims to provide a method, system, device and storage medium for optimizing the timing of intersection signal machines, which improves signal control technology to achieve more efficient and economical traffic flow management, to adapt to rapidly changing traffic conditions, reduce congestion and improve road usage efficiency.

[0003] To solve the above problems, patent document CN114373312A discloses a city traffic intelligent control method and system based on traffic informatization, which uses field device cameras to collect images of each direction of the intersection on urban roads and uploads them to the traffic signal control center to achieve adaptive control of urban road traffic signal lights.

[0004] Although the prior art such as patent application CN114373312A provides an intelligent traffic control scheme, it still has some shortcomings. First, the cost of implementing this system is high, involving high-end hardware devices and complex data processing requirements, which limits its application in a wider area. Second, there is a time difference between information collection and processing and the display of red and green light phases, which cannot fully reflect the traffic signal information in real time. This delay prevents the signal lights from being adjusted in real time to adapt to the real-time changes in traffic flow, thereby affecting the smoothness of traffic flow and vehicle passage efficiency. The method and system proposed in the present application aim to overcome these problems by achieving more accurate and timely traffic signal control in a more efficient and cost-effective way. SUMMARY

[0005] In view of the above defects or improvement needs of the prior art, the present application provides a method and system for optimizing the timing of intersection signal machines, which mainly uses video cameras or vehicle detectors arranged in corresponding lanes to collect vehicle information passing through the intersection. The data collected by these collection methods has low accuracy, and the implementation cost of vehicle detectors is high. In the present application, the vehicle information of connected vehicles is directly sent to the intersection RSU by the on-board unit, improving the accuracy of vehicle information.

[0006] In order to achieve the above object, according to a first aspect of the present application, a method for optimizing timing of an intersection signal is provided, comprising the following steps: an intersection RSU acquires information of all connected vehicles in a monitoring range; a phase QUOTE is calculated according to the information of the connected vehicles The number of vehicles in queue in lane m in the corresponding traffic direction is The intersection RSU acquires a signal timing scheme given by a signal machine; the number of vehicles in queue is The timing optimization scheme of the signal machine is determined according to the number of vehicles in queue and the signal timing scheme given by the signal machine, and the signal machine adjusts the operation of the traffic light signal according to the timing optimization scheme.

[0007] Further, the step of determining the timing optimization scheme of the signal machine comprises:

[0008] According to The phase QUOTE is calculated The total number of vehicles in queue in all lanes in the corresponding traffic direction is ;

[0009] According to The maximum value of the total number of vehicles in queue is The corresponding phase is taken as a target adjustment phase ;

[0010] It is judged whether the target adjustment phase is passable according to the signal timing scheme given by the signal machine, and the signal timing optimization scheme corresponding to each phase is determined according to the judgment result, and the signal machine adjusts the operation of the traffic light signal according to the timing optimization scheme.

[0011] Further, the step of judging whether the target adjustment phase is passable according to the signal timing scheme given by the signal machine, and determining the signal timing optimization scheme corresponding to each phase according to the judgment result comprises:

[0012] The signal corresponding to the target adjustment phase is acquired according to the signal timing scheme given by the signal machine

[0013] If the signal corresponding to the target adjustment phase is a green light signal, the target adjustment phase is passable, and the signal timing optimization scheme corresponding to the target adjustment phase and the phases after the target adjustment phase is determined

[0014] If the signal corresponding to the target adjustment phase is a non-green light signal, the target adjustment phase is not passable, and the signal timing optimization scheme corresponding to the target adjustment phase and the phases before the target adjustment phase is determined.

[0015] Further, the step of determining the signal timing optimization scheme corresponding to the target adjustment phase and the phases after the target adjustment phase comprises:

[0016] The phase QUOTE is acquired according to the current timing scheme of the signal machine The given passage time corresponding to the phase is ;

[0017] According to , the phase is calculated The maximum vehicle passage time in the corresponding lane is QUOTE , according to QUOTE The phase is obtained The maximum vehicle passage time in the corresponding lane is QUOTE ; from the target adjustment phase, the value of each phase corresponding to the is replaced as the new signal timing of the phase.

[0018] Further, the step of determining the signal timing optimization scheme of the target adjustment phase and each phase before it includes:

[0019] According to the current signal timing scheme of the signal, the phase is obtained The given passage time corresponding to the phase is ; according to , the phase is calculated The maximum vehicle passage time in the corresponding lane is QUOTE , according to , the phase is obtained The maximum vehicle passage time in the corresponding lane is QUOTE If ≥ , the signal timing of the signal corresponding to the phase is not adjusted, and the current value is maintained; if , the signal timing of the signal corresponding to the phase is updated to

[0020] In a second aspect, the application provides a signal timing optimization system for an intersection, comprising a network-connected vehicle, an intersection RSU, and a signal; wherein the network-connected vehicle is in communication with the intersection RSU and is configured to send network-connected vehicle information to the intersection RSU; the intersection RSU is in communication with the network-connected vehicle and the signal, and is configured to receive network-connected vehicle information and signal timing information of the signal, determine a signal timing optimization scheme for the signal based on the network-connected vehicle information and the signal timing information, and control the signal to work; the signal receives the signal timing optimization scheme sent by the intersection RSU and adjusts the red and green light signal to work. The intersection RSU comprises a communication module and a calculation module; the communication module is in communication with the network-connected vehicle and the signal, and receives network-connected vehicle information and signal timing information of the signal; based on the network-connected vehicle information and the signal timing information, the signal timing optimization scheme is calculated and sent to the signal to control the red and green light signal to work.

[0021] The intersection RSU comprises:

[0022] The intersection RSU acquires all the information of the connected vehicles in the monitoring range, and calculates the phase The number of vehicles in the queue of the lane m in the corresponding traffic direction is The intersection RSU acquires the signal timing scheme given by the signal machine;

[0023] According to the number of vehicles in the queue and the signal timing scheme given by the signal machine, the timing optimization scheme of the signal machine is determined, and the signal machine adjusts the work of the traffic light signal according to the timing optimization scheme.

[0024] According to a third aspect of the present application, an electronic device is provided, comprising a processor and a memory, which are connected to each other;

[0025] The memory is used for storing a computer program;

[0026] The processor is configured to execute the intersection signal machine timing optimization method when the computer program is called.

[0027] According to a third aspect of the present application, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to realize the intersection signal machine timing optimization method.

[0028] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0029] 1. In the present application, the intersection RSU acquires all the information of the connected vehicles in the monitoring range, and calculates the phase The number of vehicles in the queue of the lane m in the corresponding traffic direction is The intersection RSU acquires the signal timing scheme given by the signal machine; according to the number of vehicles in the queue and the signal timing scheme given by the signal machine, the timing optimization scheme of the signal machine is determined, and the signal machine adjusts the work of the traffic light signal according to the timing optimization scheme, the vehicle information of the connected vehicle is directly sent to the intersection RSU by the on-board unit, which improves the accuracy of the vehicle information and reduces the cost of the vehicle detector.

[0030] 2. In the present application, the intersection RSU generates the timing optimization scheme according to the acquired connected vehicle information and signal timing information, timely adjusts the signal timing of each phase in different directions, reduces the queuing time of vehicles passing through the intersection, and improves the traffic efficiency at the intersection.

[0031] 3The intersection signal timing optimization system of the application comprises a networked vehicle, a road side unit (RSU) of an intersection and a signal machine, and through this design, the system can realize highly intelligent traffic flow control, thereby effectively relieving the traffic pressure of the urban intersection. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A flow chart of an intersection signal timing optimization method of the application;

[0033] Figure 2 A structural diagram of an intersection signal timing optimization system of the application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application. In addition, the technical features involved in each embodiment of the application described below can be combined with each other as long as they do not conflict with each other.

[0035] In the existing adaptive traffic light control method, video cameras or vehicle detectors arranged in the corresponding lanes are often used to collect vehicle information passing through the intersection. The data collected by these collection methods has low accuracy, and the implementation cost of the vehicle detector is high. Figure 1 As shown, the embodiment of the application provides an intersection signal timing optimization method, and the steps include,

[0036] S10: The intersection RSU acquires all the networked vehicle information in the monitoring range;

[0037] The intersection RSU is one of the road side facilities RSU, which is usually arranged at the traffic intersection and can communicate and exchange data with the networked vehicles in the monitoring range, so as to acquire the information sent by the networked vehicles, including but not limited to vehicle positioning information and real-time speed; it should be noted that the intersection RSU in this embodiment has a computing function module in addition to the communication function module.

[0038] S20: According to the networked vehicle information, the phase The number of vehicles queuing in the lane m in the corresponding traffic direction is ;

[0039] The intersection RSU computing module calculates the number of vehicles queuing in each lane in the corresponding traffic direction according to the real-time speed and positioning information of each networked vehicle sent by all the networked vehicles in the monitoring range to the intersection RSU; let the signal phase The number of vehicles queuing in the lane m in the corresponding traffic direction is The queue size in a certain lane is the number of vehicles that can be accommodated between the stop line and the connected vehicle with a speed of 0 and the last position in that lane.

[0040] S30: The intersection RSU obtains the signal timing scheme given by the traffic signal controller;

[0041] The intersection RSU is connected to the traffic signal controller and receives a given signal timing scheme from the traffic signal controller. Based on the given signal timing scheme, the timing of traffic light signal adjustments can be determined.

[0042] S40: Based on the number of vehicles in the queue, QUOTE The timing scheme given by the traffic signal controller determines the timing optimization scheme of the traffic signal controller, and the traffic signal controller adjusts the operation of the traffic light signals according to the timing optimization scheme.

[0043] The specific steps for determining the signal timing optimization scheme are as shown in steps S401-S403:

[0044] S401: According to Calculate phase The total number of vehicles queuing in all lanes in the corresponding direction of travel is ;

[0045] According to phase Number of vehicles queuing in lane m in the corresponding direction of travel The phase can be calculated. The total number of vehicles queuing in all lanes in the corresponding direction of travel is It should be noted that, among other things, phase There can be 1 or m lanes in the corresponding direction of traffic.

[0046] S402: According to The maximum number of vehicles in the queue is: ,by The corresponding phase is used as the target phase adjustment;

[0047] According to phase QUOTE Total number of vehicles queuing in all lanes in the corresponding direction of travel It can be seen that within one signal period, the set of the total number of vehicles queuing in all lanes in all directions corresponding to all phases is { , ,... }, according to the set The maximum total number of vehicles in the queue can be obtained. ,because The phase with the largest total number of vehicles queuing is therefore... The corresponding phase is taken as a target adjustment phase, and the signal timing of the phase is adjusted as early as possible to empty the queued vehicles of the phase as soon as possible, to reduce the number of queued vehicles at the intersection to the maximum extent, and to relieve the traffic pressure at the intersection.

[0048] S403: Determine whether the target adjustment phase is passable according to the signal timing scheme given by the signal machine, and determine the signal timing optimization scheme corresponding to each phase according to the determination result, and the signal machine adjusts the red-green light signal work according to the timing optimization scheme.

[0049] It should be understood that the signal corresponding to the target adjustment phase is obtained according to the timing scheme given by the signal machine, and if the signal corresponding to the target adjustment phase is a green light signal, the target adjustment phase is passable, and the signal timing optimization scheme corresponding to the target adjustment phase and each phase after the target adjustment phase in the same signal cycle is determined, that is, the signal timing optimization scheme corresponding to the target adjustment phase and each phase after the target adjustment phase is determined; the signal machine adjusts the red-green light signal work according to the adjusted timing optimization scheme.

[0050] It should be noted that the step of determining the signal timing optimization scheme corresponding to the target adjustment phase and each phase after the target adjustment phase comprises:

[0051] According to the current timing scheme of the signal machine, the phase The corresponding given passing time is ;

[0052] According to The phase The maximum passing time of the vehicle in the corresponding lane is , according to QUOTE The phase The maximum passing time of the vehicle in the corresponding lane is ;

[0053] From the target adjustment phase, the signal timing optimization scheme corresponding to each phase after the target adjustment phase is replaced by as the new signal machine optimization timing of the phase.

[0054] It should be understood that if the signal corresponding to the target adjustment phase is not a green light signal, the target adjustment phase is not passable, and from the next phase of the target adjustment phase, the signal timing optimization scheme corresponding to the remaining phases in the same signal cycle, the phases before the target adjustment phase in the next signal cycle, and the target adjustment phase is determined, that is, the signal timing optimization scheme corresponding to the target adjustment phase and each phase before the target adjustment phase is determined, and the signal machine adjusts the red-green light signal work according to the timing optimization scheme.

[0055] It should be noted that the step of determining the target adjustment phase and the signal timing optimization scheme corresponding to each phase before it includes:

[0056] According to the current timing scheme of the signal, the phase is obtained The corresponding given travel time is ;

[0057] According to Calculate the phase The queuing vehicle travel time of the corresponding lane m is , according to Obtain the phase The maximum vehicle travel time in the corresponding lane is ;

[0058] If ≥ , the signal timing time corresponding to the phase is not adjusted, and the current value is maintained; if , the signal timing time corresponding to the phase is updated to .

[0059] As Figure 2 shown, an intersection signal timing optimization system, the system mainly includes a networked vehicle, a road side unit (RSU) of the intersection and a signal machine. Through this design, the system can realize highly intelligent traffic flow control, so as to effectively alleviate the traffic pressure of urban intersection.

[0060] The working principle of the system is as follows: the networked vehicle is connected with the intersection RSU through communication connection, when the vehicle enters the detection range of the RSU, it begins to transmit the key vehicle information to the RSU. These information not only includes the real-time speed of the vehicle, but also includes the accurate positioning information, which are the key data for optimizing the signal timing. The real-time transmission of vehicle information enables the system to accurately grasp the traffic conditions of the intersection, so as to make more detailed signal adjustment.

[0061] The RSU of the intersection is the core component of the system, including a communication module and a calculation module. The main function of the communication module is to serve as a bridge for information transmission between the networked vehicle and the signal machine. It not only receives the vehicle information from the networked vehicle, but also receives the signal timing information sent by the signal machine. The calculation module analyzes the current traffic flow according to the collected data, and calculates the best signal timing optimization scheme.

[0062] The optimization scheme is then sent to the signal machine through the communication module. After receiving the optimization scheme, the signal machine adjusts the working mode of the traffic light according to the provided data. This dynamic adjustment method can flexibly adjust the display time of the signal light according to the real-time traffic situation, effectively relieving the traffic pressure at the intersection and improving the overall efficiency of the traffic system.

[0063] In summary, the intersection signal machine timing optimization system of the present application can significantly improve the smoothness of traffic flow and the capacity of the road by realizing efficient information exchange between the connected vehicles and the intersection RSU, combined with the high-speed computing power of the RSU, which can respond to changes in traffic conditions in real time and intelligently adjust signal timing. In addition, the system has lower cost and better practicability than the prior art, and is more suitable for wide deployment in various types of urban intersections.

[0064] The intersection RSU comprises:

[0065] The intersection RSU obtains information of all connected vehicles in the monitoring range;

[0066] According to the connected vehicle information, the phase The number of vehicles in queue in lane m in the corresponding traffic direction is The intersection RSU obtains the signal timing scheme given by the signal machine;

[0067] According to the number of queued vehicles and the signal timing scheme given by the signal machine, the timing optimization scheme of the signal machine is determined, and the signal machine adjusts the traffic light signal according to the timing optimization scheme.

[0068] The present application also provides a computer readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of any one of the above data shaping communication methods can be implemented.

[0069] The computer readable storage medium can include a variety of program code storage media, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0070] For the computer readable storage medium provided by the present application, please refer to the above method embodiments, which will not be repeated here.

[0071] The various embodiments described in the specification are progressive in nature, and each embodiment highlights the differences from other embodiments. The same or similar parts among the various embodiments can be mutually referred to. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method.

[0072] Those skilled in the art will further appreciate that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or both. To clearly illustrate the interchangeability of hardware and software, the above description has generally been stated in terms of examples without limitation as to the specific components that can be employed in the construction of the examples. The features of the examples described above can be implemented in a variety of ways. To the extent there are any steps described in this specification which are not expressly included in the claims, those steps should not be read as being necessarily included in the claims.

[0073] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), flash memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0074] The above provides a data shaping communication method, a data shaping communication device, a transmission device and a computer readable storage medium. The principles and implementation manners of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method and the core idea of the present application. It should be pointed out that for those skilled in the art of the embodiments, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A method for timing optimization of an intersection signal, characterized in that, The method comprises the following steps: S10: The intersection RSU communication module acquires information of all connected vehicles in a monitoring range; S20: Calculate the phase according to the networked vehicle information The number of vehicles in the queue of lane m in the corresponding traffic direction is ; S30: The intersection RSU communication module acquires a signal timing scheme given by the signal machine; S40: intersection RSU calculation module, according to Calculate the phase The total number of vehicles in all lanes in the corresponding direction is ; According to The maximum value of the total number of queued vehicles is , in order to The corresponding phase is taken as the target adjustment phase; According to the signal timing scheme given by the signal machine, the signal corresponding to the target adjustment phase is acquired; If the signal corresponding to the target adjustment phase is a green light signal, the target adjustment phase is passable, and a signal timing optimization scheme corresponding to the target adjustment phase and each phase after the target adjustment phase is determined; If the signal corresponding to the target adjustment phase is a non-green light signal, the target adjustment phase is not passable, and a signal timing optimization scheme corresponding to the target adjustment phase and each phase before the target adjustment phase is determined.

2. The method of timing optimization for an intersection signal according to claim 1, wherein, The step of determining the signal timing optimization scheme corresponding to the target adjustment phase and each phase after the target adjustment phase comprises: S40321: Obtain the phase according to the current timing plan of the signal machine The corresponding given passing time is ; S40322: according to Calculate the phase The queuing vehicle travel time of the corresponding lane m is , according to Obtain the phase The maximum value of the vehicle travel time in the corresponding lane is ; S40323: from the target adjustment phase, with each phase corresponding to the value instead As the new signal phase optimization timing.

3. The method of timing optimization for an intersection signal as defined in claim 1, wherein, The step of determining the signal timing optimization scheme corresponding to the target adjustment phase and each phase before the target adjustment phase comprises: S40331: Obtain the phase according to the current timing plan of the signal machine The corresponding given passing time is ; S40332: according to Calculate the phase The queuing vehicle travel time of the corresponding lane m is , according to Get the phase The maximum value of the vehicle travel time in the corresponding lane is ; S40333: if ≥ , the signal timing time corresponding to the phase is not adjusted, and the current value is maintained; if , the signal timing time corresponding to the phase is updated to .

4. A system for optimizing timing of an intersection signal, referring to the method for optimizing timing of an intersection signal according to claim 1, characterized in that, The system comprises a connected vehicle, an intersection RSU, and a signal machine; The connected vehicle is in communication connection with the intersection RSU, and is configured to send connected vehicle information to the intersection RSU; The intersection RSU is in communication connection with the connected vehicle and the signal machine, and is configured to receive connected vehicle information and signal timing information of the signal machine, determine a signal timing optimization scheme of the signal machine according to the connected vehicle information and the signal timing information, and control the signal machine to work; The signal machine receives the signal timing optimization scheme sent by the intersection RSU, and adjusts the red and green light signal to work.

5. A system for timing optimization of an intersection signal according to claim 4, characterized in that, The intersection RSU comprises an intersection RSU communication module and an intersection RSU calculation module; The intersection RSU communication module is in communication with the connected vehicle and the signal machine, and receives connected vehicle information and signal timing information of the signal machine; The intersection RSU calculation module calculates a signal timing optimization scheme of the signal machine according to the connected vehicle information and the signal timing information, and sends the signal timing optimization scheme to the signal machine to control the red and green light signal to work.

6. The intersection signal machine timing optimization system according to claim 5, wherein The intersection RSU comprises: The intersection RSU acquires information of all connected vehicles in a monitoring range; computing the phase according to the connected vehicle information the number of vehicles in queue in lane m in the corresponding direction of travel is ; The intersection RSU acquires a signal timing scheme given by the signal machine; According to the vehicle queuing number And the signal timing scheme given by the signal determines the timing optimization scheme of the signal, and the signal adjusts the work of the traffic light signal according to the timing optimization scheme.

7. An electronic device, comprising: The system comprises a processor and a memory, and the processor and the memory are connected to each other; The memory is configured to store a computer program; The processor is configured to execute the intersection signal machine timing optimization method according to any one of claims 1 to 3 when the computer program is called.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the intersection signal machine timing optimization method according to any one of claims 1 to 3.

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