Traffic Signal Command and Control System Based on Dynamic Diversion

Abstract

The present invention discloses a traffic signal command and control system based on dynamic shunting, and the present invention relates to the technical field of traffic signal control. Jump light delay unit: Set 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; This traffic signal command and control system based on dynamic shunting can avoid the safety hazards caused by vehicles starting when pedestrians are passing normally during the green light process but 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 and pedestrians suddenly turning back, enhancing the safety of traffic signal command and control. Cooperating with dynamically adjusting the indication data of the horizontal traffic signal lights and the vertical traffic signal lights according to the quantity, it can be dynamically adjusted according to the traffic state of the intersection. Based on the dynamic shunting situation, the intelligent degree of traffic signal command and control is enhanced.

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, double the traffic flow under the condition of unchanged existing road resources, reduce road congestion, and at the same time reduce vehicle fuel consumption due to reducing unreasonable starts, stops and waits.

[0003] However, there are still other problems in the existing traffic signal command and control system. For example, during the green light communication of vehicles, when pedestrians are passing normally during the green light, but due to insufficient time, the light turns red when they are halfway or less than halfway through. At this time, vehicles far from the pedestrians may have blind spots, and sudden accelerations and sudden runs of pedestrians are extremely likely to cause safety hazards. Also, when the vehicle driver accelerates to start the vehicle thinking that the pedestrian has passed and the pedestrian suddenly turns back, an accident may occur. At the same time, the traffic state at intersections has unreasonable time setting distributions 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

[0005] Aiming at 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.

[0006] (II) Technical Solutions

[0007] 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:

[0008] 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;

[0009] When the first target or the second target is in the 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;

[0010] Among them, the first target and the second target are the horizontal traffic signal light and the vertical traffic signal light respectively;

[0011] Dynamic adjustment unit: collect the number of behavioral targets within the regional scope, 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.

[0012] As an improved technical solution, the specific manner 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:

[0013] 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;

[0014] 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.

[0015] As an improved technical solution, the specific manner of the vertical traffic signal light remaining in the red light state after the set data is completed is:

[0016] 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.

[0017] As an improved technical solution, the specific manner of the dynamic adjustment unit dynamically adjusting the indication data of the first target and the second target according to the number is:

[0018] 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 serial number of each recognition time node, and then set the initial indication data according to the ratio of YSn and XSn;

[0019] 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.

[0020] As an improved technical solution, 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).

[0021] As an improved technical solution, 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, where the special vehicles include ambulances, police cars, and fire trucks.

[0022] 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. When the special vehicle passes, the indication data of the horizontal traffic signal light and the vertical traffic signal light returns to the initial state.

[0023] (III) Beneficial effects

[0024] 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:

[0025] This traffic signal command and control system based on dynamic diversion analyzes according to the pedestrian position 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 and pedestrians suddenly turning 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 intelligent degree of traffic signal command and control is enhanced. Description of the drawings

[0026] Figure 1 It is a block diagram of the traffic signal command and control system based on dynamic diversion shown in the embodiment of the present application;

[0027] Figure 2Schematic structural diagram of the electronic device shown in the embodiments of the present application;

[0028] Figure 3 Schematic diagram of sidewalk area division shown in the embodiments of the present application. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 - 3 , the embodiments of the present invention provide four technical solutions: Embodiment 1

[0031] A traffic signal command and control system based on dynamic diversion, including:

[0032] 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, analyzing according to the pedestrian position on the sidewalk 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.

[0033] The specific method for 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:

[0034] S1: First, denote 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.

[0035] As Figure 3 shown, in combination with a specific example analysis, the area of the sidewalk is denoted 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.

[0036] S2: When none of the pedestrians in a row is in the Sb area, specifically: the pedestrians are only in the Sa and / or Sc areas, or the pedestrians are no longer in the Sk area of the sidewalk. At this time, it is a non-warning area. At this time, the horizontal traffic signal and the vertical traffic signal 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 the Sb area, after the set data is completed, the vertical traffic signal still remains in the red light state, and after the set data is completed, the horizontal traffic signal jumps lights according to the set data.

[0037] The specific way that the vertical traffic signal still remains in the red light state after the set data is completed is:

[0038] S21: First, set the delay value of the delayed traffic signal and 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 lights normally, and the green light value for jumping lights is T, where T = Us - Gs.

[0039] Combined with a specific example for analysis, taking the current intersection to be passed 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 with reference to the vertical traffic signal. When the green light communication time of the traffic signal is 30s, at this time, the maximum delay value Gs is 6s. When it was originally green, it still waits for 6s to jump lights, and the time to jump to the green light changes from the original 30s to 24s. If the pedestrian leaves the Sb area within 6s, it is calculated according to the actual time. For example, if the pedestrian leaves in 3s, then it waits for 3s to jump lights, and the time to jump to the green light changes from the original 30s to 27s.

[0040] 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 in the dynamic adjustment unit to dynamically adjust the indication data of the first target and the second target according to the number is:

[0041] P1: First, set the vehicle recognition area F, recognize the number of vehicles within the area F, and mark the vertical data as YSn and the horizontal data as XSn. n is specifically the serial number of each recognition time node. Then, set the initial indication data according to the ratio of YSn and XSn;

[0042] 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 method of rounding. 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.

[0043] Analyze with a specific example. Taking the initial indication data with a ratio of YSn and XSn set to 1:1 as an example, taking the green light as an example, the green lights of both YSn and XSn are 30 s, 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, and after rounding, the green - light value of YSn is 42 s, and the green - light value of XSn should be adjusted to 18 s. Embodiment Two

[0044] Based on Embodiment One, and the difference from Embodiment One is 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, it makes the first target and the second target be adjusted. Among them, special vehicles include ambulances, police cars, and fire trucks. The specific way for the special recognition unit to make the first target and the second target be adjusted is that after time T, the indication data of the horizontal traffic lights and the vertical traffic lights pauses, and the communication traffic light of the current special vehicle jumps to green. When the special vehicle passes, the indication data of the horizontal traffic lights and the vertical traffic lights returns to the initial state.

[0045] 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 prompts 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 signal light returns to 30 seconds left for the red light, during this period, the green light of the horizontal traffic signal still prompts 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

[0046] A traffic signal command and control system based on dynamic diversion includes:

[0047] 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;

[0048] When the first target or the second target is in a red light state, analyze according to the pedestrian position on the sidewalk to make a delay adjustment to the red light data of the first target or the second target;

[0049] Wherein, the first target and the second target are the horizontal traffic signal light and the vertical traffic signal light respectively;

[0050] A dynamic adjustment unit: collecting the number of behavioral targets within the regional range and dynamically adjusting the indication data of the first target and the second target according to the number, wherein the behavioral target is specifically a motor vehicle;

[0051] A special recognition unit: used to recognize the appearance of special vehicles, and when the corresponding horn information is synchronously collected, make adjustments to the first target and the second target, wherein the special vehicles include ambulances, police cars and fire trucks.

[0052] At the same time, the content not described in detail in this specification belongs to the well-known prior art in the art.

[0053] 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 "comprising", "including" 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.

[0054] 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

[0055] Corresponding to the foregoing embodiment of the application function implementation method, the present application also provides an electronic device and a corresponding embodiment.

[0056] See Figure 2 , the electronic device 1000 includes a memory 1010 and a processor 1020.

[0057] 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.

[0058] 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 uses 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 used. 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.

[0059] 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.

[0060] The solutions of the present application have been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective 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.

[0061] In addition, the method according to the present application can 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 above steps of the method of the present application.

[0062] Alternatively, the present application can 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, and when the executable code (or computer program, or computer instruction code) is executed by a processor of an electronic device (or an electronic device, a server, etc.), the processor is caused to execute some or all of the steps of the above-described method according to the present application.

[0063] Those skilled in the art will also understand that the various exemplary logical blocks, modules, circuits, and algorithm steps described in connection with the applications herein can be implemented as electronic hardware, computer software, or a combination of both.

[0064] 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 code, or a portion thereof that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the figures. For example, two consecutive blocks may actually be executed substantially in parallel, or 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 diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, 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.

[0065] 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 are obvious 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 shunting, characterized in that, Including: A headlight delay unit: setting indication data for a first target and a second target, and the indication data is specifically divided into red lights, green lights, and yellow lights; When the first target or the second target is in a red light state, analyze according to the pedestrian position on the sidewalk, so that the red light data of the first target or the second target is delayed and adjusted; Wherein, the first target and the second target are a horizontal traffic signal light and a vertical traffic signal light respectively; A dynamic adjustment unit: collecting the number of behavioral targets within the area range, and dynamically adjusting the indication data of the first target and the second target according to the number, wherein the behavioral target is specifically a motor vehicle; The specific method of analyzing according to the pedestrian position on the sidewalk so that the red light data of the first target or the second target is delayed and adjusted 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; S2: When no pedestrians are in area Sb, at this time, the horizontal traffic signal light and the vertical traffic signal light perform headlight jumps 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 performs headlight jumps according to the set data; The specific method of dynamically adjusting the indication data of the first target and the second target according to the number in the dynamic adjustment unit is: P1: First, set the identification area F of the vehicle, 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 serial number of each identification 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 serial number n and record it as L1. Then, set the initial set 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.

2. The traffic signal command and control system based on dynamic shunting according to claim 1, wherein: 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, 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 lights change normally, and the green light value for the change is T, where T = Us - Gs.

3. The traffic signal command and control system based on dynamic shunting according to claim 1, wherein: When the indication data is adjusted according to the ratio in P2, set the time range (TA, TB), and the adjustment of YSn and XSn is only carried out within the time range (TA, TB).

4. The traffic signal command and control system based on dynamic shunting according to claim 1, characterized in that: It further includes a special identification unit: used to identify the appearance of special vehicles, and when the corresponding honking information is synchronously collected, make the first target and the second target be adjusted, where the special vehicles include ambulances, police cars, and fire trucks.

5. The traffic signal command and control system based on dynamic shunting according to claim 4, characterized in that: 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 are suspended, and the communication traffic signal light of the current special vehicle is changed to green. After the special vehicle passes, the indication data of the horizontal traffic signal light and the vertical traffic signal light return to the initial state.

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