Traffic signal control method and device for motor vehicle lane detection control
By adding detectors at urban road intersections, the vehicle driving situation is detected and the release phase is reduced, the idle and empty release of motor vehicle lanes during peak and night periods is solved, which improves the efficiency of intersections and reduces safety hazards.
Patent Information
- Application Number
- CN202411699944.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-02-18
AI Technical Summary
During peak peaks, nights or holidays, motor vehicle lanes at urban road intersections are idle and empty, resulting in reduced efficiency of intersections and safety hazards.
By adding a detector to detect the vehicle's driving situation, reducing the release phase, thereby skipping some signal control phase and avoiding the occurrence of empty release phenomenon.
It effectively reduces the phenomenon of empty and discharge at intersections, improves the efficiency of intersections, reduces the conflict between left turning and straight walking at night, and reduces safety hazards.
Smart Images
Figure CN119479338A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of urban road traffic signal control, and in particular relates to a traffic signal control method and device for detecting and controlling a motor vehicle lane. Background Art
[0002] A motor vehicle lane is a driving channel designed for motor vehicles. It occupies the area from the first vehicle lane to the center line on the right side of the road or urban road. If there is no clear center line, the geometric center line of the road shall prevail. Pedestrians or non-motor vehicles are strictly prohibited from entering this lane to ensure smooth and safe traffic.
[0003] my country started research on urban signal light control systems relatively late, but has developed rapidly in recent years. In most cities, signal light systems have achieved computer networking control, creating conditions for the gradual realization of network optimization control. At the same time, some advanced adaptive control technologies and intelligent transportation systems are also being gradually promoted and applied. After research, it was found that there are still some deficiencies in the signal control of motor vehicle lanes at intersections. For example, during off-peak and nighttime periods, some motor vehicle lanes are idle, while the intersection still releases traffic in that direction, resulting in empty intersections and reduced intersection efficiency; full-screen light control is used at night. In order to reduce the cycle, the full-release phase will be used. Although full-screen lights allow conflicts, there are still conflicts between left turns and straight driving, which poses certain safety hazards.
[0004] Therefore, in view of the situation where lanes at intersections are idle or vacant during off-peak hours, at night, or on holidays, it is necessary to propose a signal control solution to improve intersection efficiency and reduce the phenomenon of vacant lanes. Summary of the invention
[0005] The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a traffic signal control method and device for detecting and controlling motor vehicle lanes. In view of the existence of motor vehicle lanes at signal-controlled intersections, when the lanes at intersections are idle or vacant during off-peak hours, at night, or on holidays, detectors are added to detect vehicles and reduce the release phases, thereby reducing the vacant phenomenon and improving intersection efficiency.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a traffic signal control method for detecting and controlling a motor vehicle lane, comprising the following steps: Obtain basic information about the intersection and determine whether the intersection meets the conditions for setting up motor vehicle lanes and dedicated lighting fixtures; When the conditions for setting up motor vehicle lanes and special lamps are met, determine whether there is a phenomenon that the motor vehicle lane is idle or vacant during certain periods of time; When there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods, additional detection equipment will be installed to detect whether there are vehicles driving on the motor vehicle lane; When there are vehicles traveling on the motor vehicle lane, the phase is enabled in the next cycle, otherwise it is skipped.
[0007] As a preferred technical solution, the installation conditions of the motor vehicle dedicated lane and the dedicated lamps are specifically set to one of the following conditions: The entrance road is a dedicated lane for U-turn vehicles and is equipped with corresponding U-turn arrow lights; Detect oncoming vehicles in all lanes and reduce phases based on actual conditions.
[0008] As a preferred technical solution, the determination of the idle or vacant motor vehicle lanes during certain periods of time includes: Detect vehicles on the motor vehicle lanes and analyze vehicle flow at different times; When the vehicle flow in a certain period is zero, the motor vehicle lane in that period is regarded as idle or vacant.
[0009] As a preferred technical solution, the vehicle flow in the certain period is zero, specifically: no vehicle passes through the entrance road during the continuous intersection cycle, and the number of vehicles entering the motor vehicle lane intersection is zero within 15 to 30 consecutive seconds, then the vehicle flow is deemed to be zero.
[0010] As a preferred technical solution, the detection equipment includes a geomagnetic coil detector, a radar detector, a video detection probe, a laser detector and an infrared detector.
[0011] As a preferred technical solution, when there is no vehicle entering the motor vehicle lane at the intersection, the signal control phase for releasing the motor vehicle lane is skipped.
[0012] As a preferred technical solution, the signal control phase includes: Phase 1: The east entrance is open to traffic, and other entrances are prohibited from opening. Vehicles on the east entrance turn left from east to west; Phase 2: The northern entrance is open to traffic, and other entrances are prohibited from being opened. Vehicles on the northern entrance turn left from north to south. Phase 3: The U-turn lanes of the north and south entrances are open, and other entrances are prohibited. Vehicles in the north entrance turn left from north to south, and vehicles in the U-turn lane of the south entrance turn around from south to north and drive south. If the detector detects that there is no vehicle entering the south entrance, the phase will be automatically skipped. If it is detected that there is a vehicle entering later, this phase will be run; Phase 4: The through lanes of the north and south entrances are open to traffic, and other entrances are prohibited from being opened. Vehicles in the north entrance go straight from north to south.
[0013] In a second aspect, the present invention further provides a traffic signal control system for motor vehicle lane detection control, which is applied to the traffic signal control method for motor vehicle lane detection control, including an intersection analysis module, a first calculation module, a second calculation module and a control execution module; The intersection analysis module is used to obtain basic information about the intersection and determine whether the intersection meets the conditions for setting up motor vehicle lanes and special lamps; The first calculation module is used to determine whether the motor vehicle lane is idle or vacant during some periods of time when the conditions for setting the motor vehicle lane and the dedicated lamp are met; The second calculation module is used to add detection equipment to detect whether there are vehicles running on the motor vehicle lane when there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods; The control execution module is used to enable the phase in the next cycle when there is a vehicle running on the motor vehicle lane, otherwise it is skipped.
[0014] In a third aspect, the present invention provides an electronic device, the electronic device comprising: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores computer program instructions that can be executed by the at least one processor, and the computer program instructions are executed by the at least one processor so that the at least one processor can execute the traffic signal control method for motor vehicle lane detection control.
[0015] In a fourth aspect, the present invention provides a computer-readable storage medium storing a program, which, when executed by a processor, implements the traffic signal control method for detecting and controlling a motor vehicle lane.
[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) In the case of idle lanes and vacant lanes at intersections during off-peak hours, nighttime, or holidays, the present invention adds detectors to detect vehicles and skips some signal control phases, thereby reducing the vacant lanes and improving intersection efficiency.
[0017] (2) The present invention reduces the conflict between left turn and straight driving caused by full-screen light control at night by reducing the release phase, thereby reducing the safety hazard at the intersection.
[0018] (3) It can be combined with detectors to implement induction control at intersections to improve traffic efficiency at intersections. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 A flow chart of a traffic signal control method for detecting and controlling a motor vehicle lane according to an embodiment of the present invention; Figure 2 This is a demonstration diagram of basic information of an intersection according to an embodiment of the present invention; Figure 3 A schematic diagram of a lane being idle or vacant in an embodiment of the present invention; Figure 4 This is a comparison diagram before and after the optimization scheme of the embodiment of the present invention; Figure 5 A schematic diagram of the structure of a traffic signal control system for detecting and controlling a motor vehicle lane according to an embodiment of the present invention; Figure 6 4 is a structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.
[0022] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.
[0023] See also Figure 1 This embodiment provides a traffic signal control method for detecting and controlling a motor vehicle lane. A signal-controlled intersection in a certain city is a key intersection for entering and leaving the city. The three directions are main roads, and there are also traffic attraction points such as business districts, residential areas, communities, government agencies, and schools around it. The intersection adopts a phase-reversing phase, and there is a serious phenomenon of empty U-turn lanes, which reduces the traffic efficiency of the intersection.
[0024] This embodiment includes the following steps: S1. Obtain basic information of the intersection and determine whether the intersection meets the requirements of motor vehicle dedicated lanes and dedicated lighting.
[0025] like Figure 2 As shown, the south entrance of the intersection uses a dedicated U-turn lane and is equipped with corresponding U-turn arrow lights. If the conditions are met, proceed to the next step.
[0026] S2. Determine whether there is a lane idle or vacant phenomenon during certain periods of time.
[0027] like Figure 3 As shown in Table 1, the full-phase travel time in the scheme before optimization of this embodiment is 140s, while the U-turn lane at the south entrance of the intersection is idle, and the U-turn phase direction of the south intersection is 20 seconds, which shows that there is a serious idling phenomenon.
[0028] Table 1 S3. Add detection equipment to detect whether there is a vehicle driving on the motor vehicle lane; that is, use the vehicle detection function of the detector to determine whether there is a vehicle entering the lane.
[0029] Among them, the detectors can be selected from local existing equipment, and the accuracy needs to be ensured to avoid intersection congestion due to the detectors, such as radar detectors, video detection probes, laser detectors and infrared detectors.
[0030] In particular, when the conditions for adding detection equipment are met at an intersection, the intersection uses a geomagnetic coil detector, which has the advantages of little meteorological influence, being unaffected by rain, snow or fog, and having high accuracy in fixed-point detection data compared to other technologies. It also requires high accuracy and is not prone to failure, thus reducing the risk of failure to detect due to equipment failure.
[0031] S4: If there is a vehicle coming in the lane, the phase will be enabled in the next cycle. If there is no vehicle, continue to choose to skip.
[0032] See also Figure 4 In part (a), the signal control at the intersection before optimization has four phases, namely: Phase 1: The east entrance is open to traffic, and other entrances are prohibited from opening. Vehicles on the east entrance turn left from east to west; Phase 2: The northern entrance is open to traffic, and other entrances are prohibited from being opened. Vehicles on the northern entrance turn left from north to south. Phase 3: The U-turn lanes of the north and south entrances are open, and other entrances are prohibited. Vehicles in the north entrance turn left from north to south, and vehicles in the U-turn lane of the south entrance turn around from south to north and drive south. If the detector detects that there is no vehicle entering the south entrance, the phase will be automatically skipped. If it is detected that there is a vehicle entering later, this phase will be run; Phase 4: The through lanes of the north and south entrances are open to traffic, and other entrances are prohibited from being opened. Vehicles in the north entrance go straight from north to south.
[0033] In particular, when it is detected that there are no vehicles passing through the U-turn lane, phase three can be jumped directly, which can reduce the intersection cycle, reduce waiting time, and improve traffic efficiency.
[0034] See also Figure 4 Part (b) and Tables 2 and 3, Table 2 Table 3 After optimization, the overall traffic efficiency of the intersection has been improved, and detection equipment has been added to the southern U-turn lane. The phenomenon of empty U-turns at the intersection has been eliminated, and the number of queues for north-south straight traffic has been reduced to one pass.
[0035] It should be noted that, for the sake of convenience, the aforementioned method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited to the described order of actions, because according to the present invention, certain steps can be performed in other orders or simultaneously.
[0036] Based on the same idea as the traffic signal control method for motor vehicle lane detection control in the above embodiment, the present invention also provides a traffic signal control system for motor vehicle lane detection control, which can be used to execute the above traffic signal control method for motor vehicle lane detection control. For ease of explanation, the structural schematic diagram of the embodiment of the traffic signal control system for motor vehicle lane detection control only shows the parts related to the embodiment of the present invention. Those skilled in the art can understand that the illustrated structure does not constitute a limitation on the device, and may include more or fewer components than shown in the diagram, or combine certain components, or arrange the components differently.
[0037] See also Figure 5 In another embodiment of the present application, a traffic signal control system 10 for detecting and controlling a motor vehicle lane is provided, the system comprising a road intersection analysis module 11, a first calculation module 12, a second calculation module 13 and a control execution module 14; The intersection analysis module 11 is used to obtain basic information of the intersection and determine whether the intersection meets the conditions for setting up a dedicated lane for motor vehicles and dedicated lamps; The first calculation module 12 is used to determine whether the motor vehicle lane is idle or vacant for some time periods when the conditions for setting the motor vehicle lane and the dedicated lamp are met; The second calculation module 13 is used to add a detection device to detect whether there is a vehicle running on the motor vehicle lane when there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods; The control execution module 14 is used to enable the phase in the next cycle when there is a vehicle running on the motor vehicle lane, and skip it otherwise.
[0038] It should be noted that the traffic signal control system for motor vehicle lane detection and control of the present invention corresponds one to one with the traffic signal control method for motor vehicle lane detection and control of the present invention. The technical features and beneficial effects described in the embodiment of the traffic signal control method for motor vehicle lane detection and control are applicable to the embodiment of the traffic signal control method for motor vehicle lane detection and control. For specific contents, please refer to the description in the embodiment of the method of the present invention, which will not be repeated here. This is hereby declared.
[0039] In addition, in the implementation of the traffic signal control system for motor vehicle lane detection control in the above-mentioned embodiment, the logical division of each program module is only an example. In actual application, the above-mentioned functions can be assigned to different program modules as needed, for example, for the convenience of corresponding hardware configuration requirements or software implementation. That is, the internal structure of the traffic signal control system for motor vehicle lane detection control is divided into different program modules to complete all or part of the functions described above.
[0040] See also Figure 6 In one embodiment, an electronic device for implementing a traffic signal control method for motor vehicle lane detection control is provided. The electronic device 20 may include a first processor 21, a first memory 22 and a bus, and may also include a computer program stored in the first memory 22 and executable on the first processor 21, such as a traffic signal control program 23 for motor vehicle lane detection control.
[0041] The first memory 22 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the first memory 22 can be an internal storage unit of the electronic device 20, such as a mobile hard disk of the electronic device 20. In other embodiments, the first memory 22 can also be an external storage device of the electronic device 20, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 20. Further, the first memory 22 can also include both an internal storage unit of the electronic device 20 and an external storage device. The first memory 22 can not only be used to store application software and various types of data installed in the electronic device 20, such as the code of the traffic signal control program 23 of the motor vehicle lane detection control, but also can be used to temporarily store data that has been output or is to be output.
[0042] In some embodiments, the first processor 21 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips. The first processor 21 is the control core (ControlUnit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes various functions and processes data of the electronic device 20 by running or executing programs or modules stored in the first memory 22, and calling data stored in the first memory 22.
[0043] Figure 6 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 6 The structure shown does not constitute a limitation on the electronic device 20 , and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.
[0044] The traffic signal control program 23 for detecting and controlling the motor vehicle lane stored in the first memory 22 of the electronic device 20 is a combination of multiple instructions, and when executed in the first processor 21, the following can be achieved: Obtain basic information about the intersection and determine whether the intersection meets the conditions for setting up motor vehicle lanes and dedicated lighting fixtures; When the conditions for setting up motor vehicle lanes and special lamps are met, determine whether there is a phenomenon that the motor vehicle lane is idle or vacant during certain periods of time; When there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods, additional detection equipment will be installed to detect whether there are vehicles driving on the motor vehicle lane; When there are vehicles traveling on the motor vehicle lane, the phase is enabled in the next cycle, otherwise it is skipped.
[0045] Furthermore, if the module / unit integrated in the electronic device 20 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile computer-readable storage medium. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).
[0046] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
[0047] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0048] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
Claims
1. A traffic signal control method for detecting and controlling a motor vehicle lane, characterized in that: The steps include: Obtain basic information about the intersection and determine whether the intersection meets the conditions for setting up motor vehicle lanes and dedicated lighting fixtures; When the conditions for setting up motor vehicle lanes and special lamps are met, determine whether there is a phenomenon that the motor vehicle lane is idle or vacant during certain periods of time; When there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods, additional detection equipment will be installed to detect whether there are vehicles driving on the motor vehicle lane; When there are vehicles traveling on the motor vehicle lane, the phase is enabled in the next cycle, otherwise it is skipped.
2. The traffic signal control method for motor vehicle lane detection control according to claim 1 is characterized in that: The conditions for setting up the motor vehicle lane and the special lamps are specifically set to one of the following conditions: The entrance road is a dedicated lane for U-turn vehicles and is equipped with corresponding U-turn arrow lights; Detect oncoming vehicles in all lanes and reduce phases based on actual conditions.
3. The traffic signal control method for motor vehicle lane detection control according to claim 1 is characterized in that: The determination of the idle or vacant motor vehicle lanes during certain periods of time includes: Detect vehicles on the motor vehicle lanes and analyze vehicle flow at different times; When the vehicle flow in a certain period is zero, the motor vehicle lane in that period is regarded as idle or vacant.
4. The traffic signal control method for motor vehicle lane detection control according to claim 3 is characterized in that: The vehicle flow in the certain period is zero, specifically: no vehicle passes through the entrance road during the continuous intersection cycle, and the number of vehicles entering the motor vehicle lane intersection is zero within 15 to 30 consecutive seconds, then the vehicle flow is considered to be zero.
5. The traffic signal control method for motor vehicle lane detection control according to claim 1 is characterized in that: The detection equipment includes a geomagnetic coil detector, a radar detector, a video detection probe, a laser detector and an infrared detector.
6. The traffic signal control method for motor vehicle lane detection control according to claim 1, characterized in that: When there is no vehicle entering the motor vehicle lane at the intersection, the signal control phase for releasing the motor vehicle lane is skipped.
7. The traffic signal control method for motor vehicle lane detection control according to claim 6 is characterized in that: The signal control phase includes: Phase 1: The east entrance is open to traffic, and other entrances are prohibited from opening. Vehicles on the east entrance turn left from east to west; Phase 2: The northern entrance is open to traffic, and other entrances are prohibited from being opened. Vehicles on the northern entrance turn left from north to south. Phase 3: The U-turn lanes of the north and south entrances are open, and other entrances are prohibited. Vehicles in the north entrance turn left from north to south, and vehicles in the U-turn lane of the south entrance turn around from south to north and drive south. If the detector detects that there is no vehicle entering the south entrance, the phase will be automatically skipped. If it is detected that there is a vehicle entering later, this phase will be run; Phase 4: The through lanes of the north and south entrances are open to traffic, and other entrances are prohibited from being opened. Vehicles in the north entrance go straight from north to south.
8. A traffic signal control system for detecting and controlling a motor vehicle lane, characterized in that: A traffic signal control method for detecting and controlling a motor vehicle lane as described in any one of claims 1 to 7, comprising an intersection analysis module, a first calculation module, a second calculation module and a control execution module; The intersection analysis module is used to obtain basic information about the intersection and determine whether the intersection meets the conditions for setting up motor vehicle lanes and special lamps; The first calculation module is used to determine whether the motor vehicle lane is idle or vacant during some periods of time when the conditions for setting the motor vehicle lane and the dedicated lamp are met; The second calculation module is used to add detection equipment to detect whether there are vehicles running on the motor vehicle lane when there is a phenomenon that the motor vehicle lane is idle or vacant for some time periods; The control execution module is used to enable the phase in the next cycle when there is a vehicle running on the motor vehicle lane, otherwise it is skipped.
9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores computer program instructions that can be executed by the at least one processor, and the computer program instructions are executed by the at least one processor so that the at least one processor can execute the traffic signal control method for motor vehicle lane detection control as described in any one of claims 1-7.
10. A computer-readable storage medium storing a program, characterized in that: When the program is executed by a processor, the traffic signal control method for motor vehicle lane detection control as described in any one of claims 1 to 7 is implemented.