Traffic signal command and control system based on dynamic shunting

Abstract

The invention discloses a traffic signal command and control system based on dynamic shunting, and relates to the technical field of traffic signal control. The light jump delay unit is used for setting indication data of the first target and the second target, wherein the indication data are specifically divided into a red light, a green light and a yellow light; according to the traffic signal command and control system based on dynamic shunting, potential safety hazards to pedestrians caused by vehicle starting due to insufficient time when the pedestrians normally pass in the green light process can be avoided, and accidents caused by the fact that the pedestrians suddenly turn back because vehicle drivers accelerate to start the vehicles after taking the pedestrians as passing can be well avoided; the safety of traffic signal command control is enhanced, the indication data of the transverse traffic signal lamps and the longitudinal traffic signal lamps are dynamically adjusted according to the number, dynamic adjustment can be performed according to the traffic state of the crossroad, and the intelligent degree of traffic signal command control is enhanced based on the condition of dynamic shunting.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic signal control, and specifically to a traffic signal command and control system based on dynamic diversion. Background Art

[0002] Referring to a Chinese patent, an intelligent traffic command and control system (Publication No.: CN106600989A, Publication Date: April 26, 2017), this patent adopts the intelligent traffic command and control system of the present invention, which can more reasonably command vehicles to pass, improve the driving speed of urban vehicles, and increase the traffic flow by about one time under the condition that the existing road resources remain unchanged, reduce the road congestion situation. At the same time, due to the reduction of unreasonable starts and stops and waiting, the vehicle fuel consumption can be reduced.

[0003] However, there are still other problems in the existing traffic signal command and control system. For example, during the process of vehicle green light communication, when pedestrians are passing normally during the green light, but due to insufficient time, the red light comes on when they have walked halfway or less than halfway. At this time, there may be blind spots for vehicles far away from the pedestrians, and sudden acceleration and sudden running of pedestrians are extremely likely to cause potential safety hazards. And when the vehicle driver accelerates and starts the vehicle after thinking that the pedestrians have passed and the pedestrians suddenly turn back, an accident may occur. At the same time, for the traffic state at intersections, there is an unreasonable time setting distribution during the change of traffic flow or within a specific time range, reducing the efficiency of the traffic signal command and control system. For this reason, the present invention proposes a traffic signal command and control system based on dynamic diversion to solve the above-mentioned problems. Summary of the Invention

[0004] (I) Technical Problems to be Solved In view of the deficiencies of the prior art, the present invention provides a traffic signal command and control system based on dynamic diversion, which solves the problems mentioned in the above background art.

[0005] (II) Technical Solutions To achieve the above object, the present invention is realized through the following technical solutions: A traffic signal command and control system based on dynamic diversion, including: A jump light delay unit: setting the indication data of the first target and the second target, and the indication data is specifically divided into red light, green light, and yellow light; When the first target or the second target is in the red light state, analyze according to the pedestrian position on the sidewalk, so as to delay and adjust the red light data of the first target or the second target; Wherein, the first target and the second target are respectively the horizontal traffic signal light and the vertical traffic signal light; Dynamic adjustment unit: Collect the number of behavioral targets within the area range, and dynamically adjust the indication data of the first target and the second target according to the number, where the behavioral target is specifically a motor vehicle.

[0006] As an improved technical solution, the specific method of analyzing according to the pedestrian position on the sidewalk to delay the adjustment of the red light data of the first target or the second target is: S1: First, record the area of the sidewalk as Sk, and then divide the area Sk into three areas, namely Sa, Sb, and Sc. Among them, Sa and Sc are located on both sides of the sidewalk area, Sb is located in the middle of the sidewalk area, area Sb is the warning area, and Sa and Sc are non-warning areas; S2: When no pedestrians are in area Sb, at this time, the horizontal traffic signal light and the vertical traffic signal light jump according to the set data; when at least one pedestrian is in area Sb, at this time, after the set data of the vertical traffic signal light is completed, it still remains in the red light state, and after the set data of the horizontal traffic signal light is completed, it jumps according to the set data.

[0007] As an improved technical solution, the specific method of the vertical traffic signal light remaining in the red light state after the set data is completed is: S21: First, set the delay value of the delayed traffic signal light and mark it as Gs, and mark the original green light communication data as Us, where , when the value of Gs is reached and pedestrians are still recognized in area Sb, the traffic signal light jumps normally, and the green light value of the jump is T, where T = Us - Gs.

[0008] As an improved technical solution, the specific method of the dynamic adjustment unit dynamically adjusting the indication data of the first target and the second target according to the number is: P1: First, set the vehicle recognition area F, identify the number of vehicles within area F, and mark the vertical data as YSn and the horizontal data as XSn. n is specifically the sequence number of each recognition time node. Then, set the initial indication data according to the ratio of YSn and XSn; P2: Since YSn and XSn are dynamic values, at this time, collect the ratio of YSn and XSn within the current time t at the time node sequence number n and record it as L1. Then, set the initial ratio of YSn and XSn as L2, and set the difference threshold of the ratio as YL. When |L1 - L2| ≤ YL, the indication data is not adjusted. When |L1 - L2| > YL, the indication data is adjusted according to the ratio.

[0009] As an improved technical solution, when the indication data in P2 is adjusted according to a ratio, a time range (TA, TB) is set, and the adjustment of YSn and XSn is only carried out within the time range (TA, TB).

[0010] As an improved technical solution, it further includes a special recognition unit: when used to recognize the appearance of special vehicles and synchronously collect corresponding horn information, the first target and the second target are adjusted, where the special vehicles include ambulances, police cars, and fire trucks.

[0011] As an improved technical solution, the specific way for the special recognition unit to adjust the first target and the second target is that after time T, the indication data of the horizontal traffic signal light and the vertical traffic signal light pauses, and the communication traffic signal light of the current special vehicle jumps to green. After the special vehicle passes, the indication data of the horizontal traffic signal light and the vertical traffic signal light returns to the initial state.

[0012] (III) Beneficial effects The present invention provides a traffic signal command and control system based on dynamic diversion. Compared with the prior art, it has the following beneficial effects: This traffic signal command and control system based on dynamic diversion analyzes according to the pedestrian positions on the sidewalk, so that the red light data of the horizontal traffic signal light and the vertical traffic signal light are adjusted with a delay. It can avoid the safety hazards caused by vehicles starting when pedestrians are passing normally during the green light process due to insufficient time, and can also well avoid accidents caused by vehicle drivers accelerating and starting the vehicle after thinking that pedestrians have passed while pedestrians suddenly turn back, enhancing the safety of traffic signal command and control. Cooperating with the dynamic adjustment of the indication data of the horizontal traffic signal light and the vertical traffic signal light according to the quantity, it can be dynamically adjusted according to the traffic state at the crossroads. Based on the dynamic diversion situation, the intelligence level of traffic signal command and control is enhanced. Brief description of the drawings

[0013] Figure 1 It is a block diagram of a traffic signal command and control system based on dynamic diversion shown in an embodiment of the present application; Figure 2 It is a schematic structural diagram of an electronic device shown in an embodiment of the present application; Figure 3 It is a schematic diagram of the sidewalk area division shown in an embodiment of the present application. Detailed implementation manners

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] Please refer to Figures 1 - 3 , the embodiments of the present invention provide four technical solutions: Embodiment 1

[0016] A traffic signal command and control system based on dynamic shunt, including: A jump light delay unit: setting the indication data of the first target and the second target, and the indication data is specifically divided into red light, green light and yellow light; when the first target or the second target is in the green light state, analyze according to the pedestrian position on the sidewalk, so as to delay and adjust the green light data of the first target or the second target; wherein, the first target and the second target are the horizontal traffic signal light and the vertical traffic signal light respectively.

[0017] The specific method of analyzing according to the pedestrian position on the sidewalk to delay and adjust the red light data of the first target or the second target is: S1: First, record the area of the sidewalk as Sk, and then divide the area Sk into three areas, namely Sa, Sb and Sc. Among them, Sa and Sc are located on both sides of the sidewalk area, Sb is located in the middle of the sidewalk area, area Sb is a warning area, and Sa and Sc are non-warning areas; it should be noted that area Sb is at least 3 times that of area Sa or area Sc, and the area of area Sa or area Sc is the same.

[0018] As Figure 3 shown, combined with a specific example for analysis, the area of the sidewalk is recorded as Sk, and the three divided areas are S1, S2 and S3 respectively. The areas of S1 and S3 are the same, and the area of S2 is 3 times that of S1 or S3. When a pedestrian is on S2, person recognition will be performed, which can be realized by relying on a camera, and the analysis of the person can be distinguished according to the recognized image.

[0019] S2: When no pedestrian is in area Sb, specifically: the pedestrian is only in area Sa and / or area Sc, or the pedestrian is no longer in the area Sk of the sidewalk. At this time, it is a non-warning area, and the horizontal traffic signal light and the vertical traffic signal light jump lights according to the set data, and the original red light normally jumps to the green light; when at least one pedestrian is in area Sb, at this time, after the set data of the vertical traffic signal light is completed, it still remains in the red light state, and after the set data of the horizontal traffic signal light is completed, it jumps lights according to the set data.

[0020] The specific way for the vertical traffic signal to remain red after the set data is completed is as follows: S21: First, set the delay value of the delayed traffic signal, mark it as Gs, and mark the original green light communication data as Us. Among them, , when the value of Gs is reached and pedestrians are still recognized in the Sb area, the traffic signal jumps normally, and the green light value for the jump is T, where T = Us - Gs.

[0021] Combined with a specific example for analysis, taking the intersection to be passed currently as the vertical traffic signal and not considering the situation of the horizontal traffic signal (the situation of the horizontal traffic signal can be analyzed in the same way as the vertical traffic signal). When the green light communication time of the traffic signal is 30s, the maximum delay value Gs is 6s at this time. When it was originally green, it still waits for 6s to jump, and the time to jump to green changes from the original 30s to 24s. If pedestrians leave the Sb area within 6s, it is calculated according to the actual time. For example, if pedestrians leave in 3s, then it waits for 3s to jump, and the time to jump to green changes from the original 30s to 27s.

[0022] Dynamic adjustment unit: Collect the number of behavioral targets within the area range and dynamically adjust the indication data of the first target and the second target according to the number. Among them, the behavioral target is specifically a motor vehicle; the specific way for the dynamic adjustment unit to dynamically adjust the indication data of the first target and the second target according to the number is as follows: P1: First, set the vehicle recognition area F, identify the number of vehicles within the area F, mark the vertical data as YSn, and the horizontal data as XSn. n is specifically the sequence number of each recognition time node. Then, set the initial indication data according to the ratio of YSn and XSn; P2: Since YSn and XSn are dynamic values, at this time, the ratio of YSn and XSn within the current time t is collected at the time node serial number n and denoted as L1. Then, the initial set ratio of YSn and XSn is L2, and the difference threshold of the ratio is set as YL. When ∣L1 - L2∣ ≤ YL, the indication data is not adjusted. When ∣L1 - L2∣ > YL, the indication data is adjusted according to the ratio. It should be noted that when adjusting according to the ratio, it is rounded up in units of at least 1 s, following the rounding method. It should be noted that the setting of the difference threshold YL is to prevent meaningless adjustments due to small-range fluctuations. For example, the ratio of YSn and XSn is 1.2:1.1, and the adjustment range may be only 1 - 2 s. Therefore, such adjustments are directly excluded, and the value of YL can be set according to actual needs. When the indication data in P2 is adjusted according to the ratio, a time range (TA, TB) is set, and the adjustment of YSn and XSn is only carried out within the time range (TA, TB). The time range (TA, TB) is, for example, from 7:00 to 9:00 in the morning and from 5:00 to 7:00 in the evening.

[0023] Analysis is carried out in combination with a specific example. Taking the initial indication data with the ratio of YSn and XSn set as 1:1 as an example, taking the green light as an example, the green lights of both YSn and XSn are 30 s, and t is taken as 5 min. After 5 min, the collected data shows that the ratio of YSn and XSn is 2.3:1. At this time, the green light value of YSn should be adjusted to 60÷3.3×2.3≈41.8. At this time, the rounded green light value of YSn is 42 s, and the green light value of XSn should be adjusted to 18 s. Embodiment 2

[0024] Based on Embodiment 1, this embodiment is different from Embodiment 1 in that it further includes a special recognition unit: used to recognize the appearance of special vehicles, and when the corresponding horn information is synchronously collected, the first target and the second target are adjusted. Among them, special vehicles include ambulances, police cars, and fire trucks. The specific way for the special recognition unit to adjust the first target and the second target is that after time T, the indication data of the horizontal traffic lights and the vertical traffic lights pauses, and the communication traffic lights of the current special vehicle turn green. After the special vehicle passes, the indication data of the horizontal traffic lights and the vertical traffic lights returns to the initial state.

[0025] Analysis is carried out with specific examples. Taking the case where there are 30 seconds left for the red light in the passing direction of the ambulance at the current vertical traffic signal as an example, at this time the time T is 5 seconds, the green light of the horizontal traffic signal is on for 2 seconds, then turns into a yellow light for 3 seconds, and directly jumps to a red light after that. After the camera recognizes that the ambulance has passed, when the traffic signal returns to 30 seconds left for the red light, during this period, the green light of the horizontal traffic signal is still on for 2 seconds and then turns into a yellow light for 3 seconds to reduce potential safety hazards. If it was originally a green light, keep the current green light, and after the camera recognizes that the ambulance has passed, resume the initial green light timing. Embodiment III

[0026] A traffic signal command and control system based on dynamic diversion includes: A light jump delay unit: setting the indication data of the first target and the second target, and the indication data is specifically divided into red light, green light and yellow light; When the first target or the second target is in a red light state, analyze according to the pedestrian position on the sidewalk to delay and adjust the red light data of the first target or the second target; Among them, the first target and the second target are the horizontal traffic signal and the vertical traffic signal respectively; A dynamic adjustment unit: collecting the number of behavioral targets within the regional scope, and dynamically adjusting the indication data of the first target and the second target according to the number, where the behavioral target is specifically a motor vehicle; A special recognition unit: used to recognize the appearance of special vehicles, and when the corresponding horn information is collected synchronously, adjust the first target and the second target, where the special vehicles include ambulances, police cars and fire trucks.

[0027] Meanwhile, the content not described in detail in this specification belongs to the well-known prior art in the art.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Embodiment 4

[0030] Corresponding to the foregoing method embodiments for implementing application functions, the present application also provides an electronic device and corresponding embodiments.

[0031] See Figure 2 , the electronic device 1000 includes a memory 1010 and a processor 1020.

[0032] The processor 1020 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0033] The memory 1010 may include various types of storage units, such as system memory, read-only memory (ROM), and permanent storage devices. Among them, the ROM may store static data or instructions required by the processor 1020 or other modules of the computer. The permanent storage device may be a readable and writable storage device. The permanent storage device may be a non-volatile storage device that does not lose the stored instructions and data even when the computer is powered off. In some embodiments, the permanent storage device employs a mass storage device (such as a magnetic or optical disk, flash memory) as the permanent storage device. In some other embodiments, the permanent storage device may be a removable storage device (such as a floppy disk, optical drive). The system memory may be a readable and writable storage device or a volatile readable and writable storage device, such as dynamic random access memory. The system memory may store some or all of the instructions and data required by the processor during operation. In addition, the memory 1010 may include any combination of computer-readable storage media, including various types of semiconductor storage chips (DRAM, SRAM, SDRAM, flash memory, programmable read-only memory), and magnetic disks and / or optical disks may also be employed. In some embodiments, the memory 1010 may include a removable storage device that is readable and / or writable, such as a compact disc (CD), read-only digital versatile disc (such as DVD-ROM, dual-layer DVD-ROM), read-only Blu-ray disc, super density disc, flash memory card (such as SD card, min SD card, Micro-SD card, etc.), magnetic floppy disk, and so on. Computer-readable storage media do not include carrier waves and instantaneous electronic signals transmitted wirelessly or by wire.

[0034] Executable code is stored on the memory 1010, and when the executable code is processed by the processor 1020, it may cause the processor 1020 to execute some or all of the methods described above.

[0035] The solution of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0036] In addition, the method according to the present application may also be implemented as a computer program or a computer program product, which includes computer program code instructions for executing some or all of the steps in the above method of the present application.

[0037] Alternatively, the present application may also be implemented as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having executable code (or computer program, or computer instruction code) stored thereon, which, when executed by a processor of an electronic device (or an electronic device, a server, etc.), causes the processor to perform some or all of the steps of the above-described method according to the present application.

[0038] Those skilled in the art will also understand that the various exemplary logical blocks, modules, circuits, and algorithmic steps described in connection with the application herein can be implemented as electronic hardware, computer software, or a combination of both.

[0039] The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a part of code, which contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the figures. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0040] The embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A traffic signal command and control system based on dynamic diversion, characterized in that: include: Light trip delay unit: set the indication data of the first target and the second target, and the indication data are specifically divided into red light, green light and yellow light; When the first target or the second target is in a red light state, analyzing according to the position of pedestrians on the sidewalk, so that the red light data of the first target or the second target is delayed and adjusted; Among them, the first target and the second target are the horizontal traffic signal light and the longitudinal traffic signal light respectively; Dynamic adjustment unit: collects the number of behavioral targets within the area, and dynamically adjusts the indication data of the first target and the second target according to the number, wherein the behavioral target is specifically a motor vehicle.

2. The traffic signal command and control system based on dynamic diversion according to claim 1 is characterized in that: The specific method of analyzing the pedestrian position on the sidewalk to delay the red light data of the first target or the second target is: S1: First, the sidewalk area is recorded as Sk, and then the area Sk is divided into three areas, namely Sa, Sb and Sc, where Sa and Sc are located on both sides of the sidewalk area, Sb is located in the middle of the sidewalk area, area Sb is a warning area, and Sa and Sc are non-warning areas; S2: When no pedestrians are in the Sb area, the transverse traffic light and the longitudinal traffic light will trip according to the set data; when at least one pedestrian is in the Sb area, the longitudinal traffic light will remain in the red light state after the set data is completed, and the transverse traffic light will trip according to the set data after the set data is completed.

3. The traffic signal command and control system based on dynamic diversion according to claim 2 is characterized in that: The specific method for the longitudinal traffic light to maintain the red light state after the set data is completed is: S21: First, set the delay value of the delayed traffic light and mark it as Gs, and mark the original green light communication data as Us, where When the value of Gs is reached and the Sb area still recognizes pedestrians, the traffic light will trip normally, and the green light value of the tripped light is T, where T=Us-Gs.

4. The traffic signal command and control system based on dynamic diversion according to claim 1 is characterized in that: The specific manner in which the dynamic adjustment unit dynamically adjusts the indication data of the first target and the second target according to the quantity is: P1: First, set the vehicle identification area F, identify the number of vehicles in area F, and mark the longitudinal data as YSn and the transverse data as XSn, where n is the time node number of each identification, and then set the initial indication data according to the ratio of YSn and XSn; P2: Since YSn and XSn are dynamic values, the ratio of YSn and XSn in the current time t is collected with time node number n, and recorded as L1. Then the initial setting ratio of YSn and XSn is L2, and the difference threshold of the ratio is set to YL. When |L1-L2|≤YL, the indication data is not adjusted. When |L1-L2|>YL, the indication data is adjusted according to the ratio.

5. The traffic signal command and control system based on dynamic diversion according to claim 4 is characterized in that: When the indicated data in P2 is adjusted according to the ratio, the time range (TA, TB) is set, and the adjustment of YSn and XSn is only performed within the time range (TA, TB).

6. The traffic signal command and control system based on dynamic diversion according to claim 1 is characterized in that: It also includes a special identification unit: used to identify the appearance of special vehicles, and when the corresponding horn information is synchronously collected, the first target and the second target are adjusted, wherein the special vehicles include ambulances, police cars and fire trucks.

7. The traffic signal command and control system based on dynamic diversion according to claim 6 is characterized in that: The specific method for adjusting the first target and the second target in the special identification unit is that after time T, the indication data of the transverse traffic light and the longitudinal traffic light are suspended, and the communication traffic light of the current special vehicle is turned green. When the special vehicle passes, the indication data of the transverse traffic light and the longitudinal traffic light are restored to the initial state.

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