CN113744546A - Signal lamp control method and system of drive test unit based on V2X - Google Patents
Signal lamp control method and system of drive test unit based on V2X Download PDFInfo
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- CN113744546A CN113744546A CN202111118953.4A CN202111118953A CN113744546A CN 113744546 A CN113744546 A CN 113744546A CN 202111118953 A CN202111118953 A CN 202111118953A CN 113744546 A CN113744546 A CN 113744546A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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Abstract
The embodiment of the invention provides a signal lamp control method and system of a drive test unit based on V2X. The method comprises the following steps: acquiring the traffic signal lamp state of a signal lamp of a road section covered by a road test unit; determining the current running speed of the passing vehicle corresponding to the current weather condition according to the preset corresponding relation between the historical weather condition and the running speed of the passing vehicle, and determining the estimated number of vehicles capable of running in the current green light state based on the remaining green light duration and the current running speed; determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical traffic record; and judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold, and determining the increasing duration of the green light based on the difference value of the historical passage record and the preset parameter threshold. The invention can adjust the state of the signal lamp in time, realize the fuzzy control of the signal lamp and avoid potential safety hazards.
Description
Technical Field
The invention relates to the technical field of traffic signal lamp control, in particular to a signal lamp control method and system of a drive test unit based on V2X.
Background
The cooperative development of the vehicle road refers to the combination of the cooperative relationship between the vehicle networking and the roadside signal equipment. The advanced internet of things technology is adopted to realize interaction and fusion of real-time dynamic information of the vehicle road based on the excellent wireless transmission technology, the road passing efficiency is improved as much as possible on the premise of ensuring the traffic safety, and a safe and efficient traffic system is realized.
When a driver drives to a road, the state information of a traffic signal lamp needs to be passively acquired, the driver is greatly influenced by the environment, when the visible distance is small, the distance for acquiring the traffic light state by the driver is short, the condition that the vehicle runs the red light when reaching a stop line often occurs, and the traffic safety is seriously influenced by the condition.
Disclosure of Invention
The embodiment of the invention aims to provide a signal lamp control method and system of a drive test unit based on V2X, which can adjust the state of a signal lamp in time, realize fuzzy control of the signal lamp and avoid potential safety hazards.
In order to achieve the above object, an embodiment of the present invention provides a method for controlling a signal lamp of a drive test unit based on V2X, where the method for controlling a signal lamp of a drive test unit based on V2X includes:
acquiring the traffic signal lamp state of a signal lamp of a road section covered by a road test unit, the visible distance of an external environment and the current weather condition;
when the visible distance of the external environment is smaller than the preset visible distance and the traffic light state is green, determining the current running speed of the passing vehicle corresponding to the current weather condition according to the preset corresponding relation between the historical weather condition and the running speed of the passing vehicle, and determining the estimated number of vehicles capable of running in the current green light state based on the remaining green light time and the current running speed shown in the traffic light state;
determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical passage record, wherein the historical passage record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the intersections and the speed of the intersections; and
and judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold, and determining the increasing duration of the green light based on the difference value of the historical passage record and the preset parameter threshold when the judgment result is yes.
Preferably, the determining the target vehicle in the road section according to the estimated number of vehicles comprises:
sequencing the vehicles in the road section according to the sequence of the distance from the vehicles to the traffic signal lamp from near to far; and
and determining the vehicles with the last preset number threshold value in the plurality of vehicles of the previous estimated vehicles as the target vehicles.
Preferably, the determining whether to increase the duration of the green light according to the comparison result between the historical passage record and a preset parameter threshold includes:
when the proportion of the number of intersections in the yellow light passing state to the total number of the intersections is larger than a preset proportion threshold value and the speed of the intersections is larger than a preset speed threshold value, judging that the duration of the green light needs to be increased;
and when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased.
Preferably, the proportion threshold is configured to be related to the proportion of the number of intersections in the yellow light passing state to the total number of the intersections in the last preset time;
the speed threshold is configured to correlate to a speed through the intersection within a last preset time.
Preferably, the determining the increased time period of the green light based on the difference between the historical passage record and the preset parameter threshold comprises:
and determining the increasing time of the green light according to a preset interval to which the difference between the ratio of the number of intersections in the state of passing the yellow light to the total number of the intersections and the preset ratio threshold belongs and a preset interval to which the difference between the speed of the intersections and the preset speed threshold belongs.
In addition, the present invention provides a traffic light control system of a drive test unit based on V2X, wherein the traffic light control system of a drive test unit based on V2X includes:
the information acquisition unit is used for acquiring the traffic signal lamp state of the signal lamp of the road section covered by the road test unit, the visible distance of the external environment and the current weather condition;
the vehicle number pre-estimation unit is used for determining the current running speed of the passing vehicle corresponding to the current weather condition according to the corresponding relation between the preset historical weather condition and the running speed of the passing vehicle when the visible distance of the external environment is smaller than the preset visible distance and the traffic signal lamp state is green, and determining the pre-estimated number of the passing vehicles in the current green lamp state based on the green lamp remaining time and the current running speed shown by the traffic signal lamp state;
the record acquisition unit is used for determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical traffic record, wherein the historical traffic record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the passing intersections and the speed of the passing intersections; and
and the time length determining unit is used for judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold value, and determining the increasing time length of the green light based on the difference value of the historical passage record and the preset parameter threshold value when the judgment result is yes.
Preferably, the determining, by the record obtaining unit, the target vehicle in the road segment according to the estimated number of vehicles includes:
the sequencing module is used for sequencing the vehicles in the road section from near to far according to the distance between the vehicles and the traffic signal lamp; and
the vehicle determining module is used for determining vehicles with the last preset number threshold value in a plurality of vehicles of the previous estimated vehicle as target vehicles.
Preferably, the determining unit of the duration for determining whether to increase the duration of the green light according to the comparison result between the historical passage record and the preset parameter threshold includes:
the duration determining unit is used for judging that the duration of the green light needs to be increased when the proportion of the number of intersections in the yellow light passing state to the total number of the intersections is greater than a preset proportion threshold value and the speed of the intersections is greater than a preset speed threshold value;
and when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased.
In addition, the invention also provides a machine-readable storage medium, wherein the machine-readable storage medium is stored with instructions, and the instructions are used for enabling the machine to execute the signal lamp control method based on the V2X drive test unit.
Through the technical scheme, the wireless signal transmission is realized by utilizing the technology of the drive test unit and the V2X, the number of the traffic lights which can pass through the intersection is estimated according to the remaining duration of the green light, then the vehicles which possibly cannot pass through in the past are independently compared and analyzed, the passing probability and the danger to new people are determined, and then the safety of the passing personnel is ensured through the data, so that traffic accidents are avoided.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a flow chart illustrating a signal light control method of a drive test unit based on V2X according to the present invention; and
fig. 2 is a block diagram illustrating a signal lamp control system of a drive test unit based on V2X according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart of a signal light control method of a drive test unit based on V2X according to the present invention, and as shown in fig. 1, the signal light control method of a drive test unit based on V2X includes:
s101, acquiring the traffic signal lamp state of a signal lamp of a road section covered by a road test unit, the visible distance of an external environment and the current weather condition; the states of the traffic signal lamps can include a green light state, a red light state or a yellow light state, and additionally include the time of the green light and the red light, and the like; the visible distance of the external environment is related to the visibility of the environment, and the value reflects the distance visible to the driver; the weather condition reflects the influence of the outside on the driver, and the control strategy of the signal lamp is influenced in severe weather conditions such as rain or snow.
S102, when the visible distance of the external environment is smaller than a preset visible distance threshold value and the traffic signal lamp state is a green light, determining the current running speed of the passing vehicle corresponding to the current weather condition according to the preset corresponding relation between the historical weather condition and the running speed of the passing vehicle, and determining the estimated number of the passing vehicles in the current green light state based on the remaining green light time and the current running speed shown by the traffic signal lamp state; the visible distance threshold may be 500m, and when the signal lamp is in a green state, it may be determined that the signal lamp needs to be controlled, otherwise a traffic accident may occur. The preset corresponding relationship between the historical weather conditions and the running speed of the passing vehicle can be based on the corresponding relationship between the historical weather conditions and the running speed of the passing vehicle, for example, in the case of rain, the running speed is 10km/h according to the historical conditions, the rest time is 20s for example, and then several vehicles which can probably pass can be calculated according to the speed. In this case, the vehicle is started over, and only the average traveling speed of the vehicle is considered.
S103, determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical traffic record, wherein the historical traffic record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the intersections and the speed of the intersections; the target vehicle may be analyzed according to the predicted vehicle (i.e. the vehicle closest to the vehicle that substantially passes), these vehicles may include vehicles that are predicted to pass and may also include vehicles that are predicted to not pass, and the number may be set according to the situation, for example, 1. The proportion of the number of intersections in the yellow light state to the total number of the intersections mainly reflects that the times of the vehicles passing the traffic lights through the yellow light account for the times of passing all the traffic lights, for example, the number of the vehicles passing the traffic lights through the yellow light is 10 times, and the number of the vehicles passing all the traffic lights is 100 times, so that the proportion is 1/10; the speed through the intersection reflects the speed value of the vehicle through the intersection in the historical situation, for example, 10 km/h. The speed is not the same speed as the speed in S102, which is the equilibrium speed of a single vehicle, but the speed in S102 is the parallel speed of all vehicles, and the two concepts are different and cannot be mixed.
S104, judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold, and determining the increasing duration of the green light based on the difference value of the historical passage record and the preset parameter threshold when the judgment result is yes. The historical traffic records can reflect the things of the vehicles, whether the duration is increased or not is related to the historical traffic records of the target vehicles, the worse the record is, the higher the probability of accidents at the possible intersection is, and at the moment, the duration of the green light needs to be increased to avoid the accidents.
Preferably, the determining the target vehicle in the road section according to the estimated number of vehicles comprises:
sequencing the vehicles in the road section according to the sequence of the distance from the vehicles to the traffic signal lamp from near to far; the sequence is the sequence of queuing at the intersection, and the sorting is carried out according to the sequence.
And determining the vehicles with the last preset number threshold value in the plurality of vehicles of the previous estimated vehicles as the target vehicles. For example, if the number of predicted vehicles is 10, the target vehicle is the last 2 of the 10 vehicles and the 2 vehicles which are ranked before and cannot pass through the prediction to form the target vehicle.
Preferably, the determining whether to increase the duration of the green light according to the comparison result between the historical passage record and a preset parameter threshold includes:
when the proportion of the number of intersections in the state of passing the yellow light to the total number of the intersections is greater than a preset proportion threshold value and the speed of the intersections is greater than a preset speed threshold value by 10km/h, judging that the duration of the green light needs to be increased; under the condition, the danger coefficient of the vehicle is judged to be higher, and the market of green lights needs to be increased to avoid the safety risk to the pedestrian when the vehicle passes through the intersection.
And when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased. In this case, the risk factor of the vehicle is low, and the vehicle can be kept from danger without increasing the number of green lights.
Preferably, the proportion threshold is configured to be related to the proportion of the number of intersections in the yellow light passing state to the total number of the intersections in the last preset time; the speed threshold is configured to correlate to a speed through the intersection within a last preset time.
Preferably, the determining the increased time period of the green light based on the difference between the historical passage record and the preset parameter threshold comprises: and determining the increasing time of the green light according to a preset interval to which the difference between the ratio of the number of intersections in the state of passing the yellow light to the total number of the intersections and the preset ratio threshold belongs and a preset interval to which the difference between the speed of the intersections and the preset speed threshold belongs. The interval may be preset and related to the increased duration, and the increased duration is longer if the difference is larger, and may be specifically selected according to an actual situation.
In addition, the invention also provides a signal lamp control system of the drive test unit based on V2X, and the signal lamp control system of the drive test unit based on V2X comprises:
the information acquisition unit is used for acquiring the traffic signal lamp state of the signal lamp of the road section covered by the road test unit, the visible distance of the external environment and the current weather condition;
the vehicle number pre-estimation unit is used for determining the current running speed of the passing vehicle corresponding to the current weather condition according to the corresponding relation between the preset historical weather condition and the running speed of the passing vehicle when the visible distance of the external environment is smaller than the preset visible distance and the traffic signal lamp state is green, and determining the pre-estimated number of the passing vehicles in the current green lamp state based on the green lamp remaining time and the current running speed shown by the traffic signal lamp state;
the record acquisition unit is used for determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical traffic record, wherein the historical traffic record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the passing intersections and the speed of the passing intersections; and
and the time length determining unit is used for judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold value, and determining the increasing time length of the green light based on the difference value of the historical passage record and the preset parameter threshold value when the judgment result is yes.
Preferably, the determining, by the record obtaining unit, the target vehicle in the road segment according to the estimated number of vehicles includes:
the sequencing module is used for sequencing the vehicles in the road section from near to far according to the distance between the vehicles and the traffic signal lamp; and
the vehicle determining module is used for determining vehicles with the last preset number threshold value in a plurality of vehicles of the previous estimated vehicle as target vehicles.
Preferably, the determining unit of the duration for determining whether to increase the duration of the green light according to the comparison result between the historical passage record and the preset parameter threshold includes:
the duration determining unit is used for judging that the duration of the green light needs to be increased when the proportion of the number of intersections in the yellow light passing state to the total number of the intersections is greater than a preset proportion threshold value and the speed of the intersections is greater than a preset speed threshold value;
and when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased.
In addition, the invention also provides a machine-readable storage medium, wherein the machine-readable storage medium is stored with instructions, and the instructions are used for enabling the machine to execute the signal lamp control method based on the V2X drive test unit.
In addition, the present invention also provides a processor for executing a program, wherein the program is executed to perform: the signal lamp control method based on the drive test unit of V2X is described above.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A signal lamp control method of a V2X-based drive test unit is characterized in that the signal lamp control method of the V2X-based drive test unit comprises the following steps:
acquiring the traffic signal lamp state of a signal lamp of a road section covered by a road test unit, the visible distance of an external environment and the current weather condition;
when the visible distance of the external environment is smaller than the preset visible distance and the traffic light state is green, determining the current running speed of the passing vehicle corresponding to the current weather condition according to the preset corresponding relation between the historical weather condition and the running speed of the passing vehicle, and determining the estimated number of vehicles capable of running in the current green light state based on the remaining green light time and the current running speed shown in the traffic light state;
determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical passage record, wherein the historical passage record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the intersections and the speed of the intersections; and
and judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold, and determining the increasing duration of the green light based on the difference value of the historical passage record and the preset parameter threshold when the judgment result is yes.
2. The signal light control method based on the V2X road test unit according to claim 1, wherein the determining the target vehicle in the road section according to the estimated vehicle number comprises:
sequencing the vehicles in the road section according to the sequence of the distance from the vehicles to the traffic signal lamp from near to far; and
and determining the vehicles with the last preset number threshold value in the plurality of vehicles of the previous estimated vehicles as the target vehicles.
3. The signal light control method of the V2X-based drive test unit, wherein the determining whether to increase the duration of the green light according to the comparison result of the historical passage record and the preset parameter threshold comprises:
when the proportion of the number of intersections in the yellow light passing state to the total number of the intersections is larger than a preset proportion threshold value and the speed of the intersections is larger than a preset speed threshold value, judging that the duration of the green light needs to be increased;
and when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased.
4. The signal light control method of the V2X-based drive test unit, wherein the proportional threshold is configured to be related to the proportion of the number of crossing in the yellow light passing state to the total number of passing crossings within the latest preset time;
the speed threshold is configured to correlate to a speed through the intersection within a last preset time.
5. The signal light control method of the V2X-based drive test unit, wherein the determining the length of the green light increase time based on the difference between the historical transit record and the preset parameter threshold comprises:
and determining the increasing time of the green light according to a preset interval to which the difference between the ratio of the number of intersections in the state of passing the yellow light to the total number of the intersections and the preset ratio threshold belongs and a preset interval to which the difference between the speed of the intersections and the preset speed threshold belongs.
6. A signal lamp control system of a V2X-based drive test unit is characterized in that the signal lamp control system of the V2X-based drive test unit comprises:
the information acquisition unit is used for acquiring the traffic signal lamp state of the signal lamp of the road section covered by the road test unit, the visible distance of the external environment and the current weather condition;
the vehicle number pre-estimation unit is used for determining the current running speed of the passing vehicle corresponding to the current weather condition according to the corresponding relation between the preset historical weather condition and the running speed of the passing vehicle when the visible distance of the external environment is smaller than the preset visible distance and the traffic signal lamp state is green, and determining the pre-estimated number of the passing vehicles in the current green lamp state based on the green lamp remaining time and the current running speed shown by the traffic signal lamp state;
the record acquisition unit is used for determining a target vehicle in the road section according to the estimated vehicle number, and acquiring vehicle identity information of the target vehicle and a corresponding historical traffic record, wherein the historical traffic record is configured to be related to the proportion of the number of intersections in a yellow light passing state to the total number of the passing intersections and the speed of the passing intersections; and
and the time length determining unit is used for judging whether the duration of the green light needs to be increased or not according to the comparison result of the historical passage record and the preset parameter threshold value, and determining the increasing time length of the green light based on the difference value of the historical passage record and the preset parameter threshold value when the judgment result is yes.
7. The signal lamp control system of the V2X-based road test unit according to claim 6, wherein the record obtaining unit for determining the target vehicle in the road section according to the estimated vehicle number comprises:
the sequencing module is used for sequencing the vehicles in the road section from near to far according to the distance between the vehicles and the traffic signal lamp; and
the vehicle determining module is used for determining vehicles with the last preset number threshold value in a plurality of vehicles of the previous estimated vehicle as target vehicles.
8. The signal lamp control system of the V2X based road test unit according to claim 7, wherein the duration determining unit for determining whether to increase the duration of the green light according to the comparison result of the historical passage record and the preset parameter threshold comprises:
the duration determining unit is used for judging that the duration of the green light needs to be increased when the proportion of the number of intersections in the yellow light passing state to the total number of the intersections is greater than a preset proportion threshold value and the speed of the intersections is greater than a preset speed threshold value;
and when the proportion of the number of intersections in the state of passing the yellow light to the total number of the passing intersections is smaller than or equal to a preset proportion threshold value, or the speed of the passing intersections is smaller than or equal to a preset speed threshold value, judging that the duration of the green light does not need to be increased.
9. A machine-readable storage medium having stored thereon instructions for causing a machine to execute the method of signal light control of a V2X-based drive test unit according to any one of claims 1 to 5.
10. A processor configured to execute a program, wherein the program is configured to perform: the signal lamp control method based on the V2X drive test unit according to any one of claims 1-5.
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| CN115938141A (en) * | 2023-03-15 | 2023-04-07 | 昆明理工大学 | Sidewalk traffic signal lamp with dynamic identification and intelligent adjustment functions |
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| CN115938141A (en) * | 2023-03-15 | 2023-04-07 | 昆明理工大学 | Sidewalk traffic signal lamp with dynamic identification and intelligent adjustment functions |
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Application publication date: 20211203 |