CN111968383A - Method for realizing speed guidance of intersection by using electronic identification information of automobile - Google Patents

Abstract

The invention provides a method for realizing speed guidance at an intersection by using electronic identification information of an automobile, which mainly detects a running automobile in real time through an electronic identification detection antenna and a detector arranged at the intersection for road test, acquires corresponding automobile information and transmits the automobile information to a control center. The control center calculates the average driving speed and time of the vehicle passing through the current intersection and the corresponding vehicle type along the road at the previous moment by using the electronic identification detection information, calculates the reasonable time and speed of the currently detected vehicle passing through the next intersection by combining the traffic signal control information and the speed limit regulation of the next intersection, and pushes the vehicle speed guide information to the currently detected vehicle by using an information broadcasting method, thereby realizing the guide of the driving speed of the vehicle passing through the road and the intersection along the line. The invention can effectively reduce blind operation caused by driving information loss, reduce the probability of traffic safety accidents, mine the value of the existing electronic identification system, play the role of information and promote the technical progress.

Description

Method for realizing speed guidance of intersection by using electronic identification information of automobile

Technical Field

The invention belongs to the technical field of traffic engineering, and particularly relates to a method for realizing speed guidance at an intersection by using automobile electronic identification information.

Background

With the rapid development of the intelligent traffic system and the intelligent networked automobile technology, the automobile electronic identification technology will meet new use scenes, help to realize the identity identification of the vehicle-road information cooperation, the vehicle-vehicle ad hoc network and the vehicle-vehicle cooperation, and guarantee the information safety of the vehicle-road, the vehicle-vehicle interaction and the cooperation. At present, automobile electronic identification technology has been popularized in major cities in China, detection devices are installed in key road sections, an established automobile electronic identification monitoring system mainly utilizes information stored in electronic identifications to acquire information of automobile numbers, automobile types, purposes, all relations and the like passing through the electronic identification detection devices, system functions are only limited to detection of automobile identity information, tracking of driving paths, anti-counterfeiting of automobile license plates, electronic fences, traffic flows and the like, and great potential value of electronic identification information in the aspect of vehicle-road cooperation is not given out.

Disclosure of Invention

The invention aims to solve the technical problem that the prior art is not enough, and provides a method for realizing the speed guidance of an intersection by using electronic identification information of an automobile.

In order to solve the technical problems, the invention adopts the technical scheme that: a method for realizing speed guidance of an intersection by using electronic identification information of an automobile is characterized by comprising the following steps:

s1, automobile A₁Passing through intersection B₁When it is set at B₁Electronic mark detector C at road junction₁At T₁Detection of the automobile A at a time Point₁Velocity information V of₁Time information T₁And velocity information V₁Uploading to a control center S;

s2, automobile A₁Continuously driving through the next crossing B₂When is at B₂Electronic mark detector C at road junction₂At T₂Detection of the automobile A at a time Point₁Velocity information V of₂Time information T₂And velocity information V₂Uploading to a control center S;

s3, control center S according to the intersection B₁And B₂Road length L between, obtaining cars A₁By B₁And B₂Average speed V of road between intersections_aAnd the vehicle speed information V is obtained_aRecording the data into a database of the control center S for retrieval;

s4, the control center S sends T₁The time point is taken as the current time point, and the time point T is₁The automobile A₁Passing through intersection B₂The vehicle speed of (2) as a guidance target;

s5, the control center S searches the database to search for the intersection B₂From the current point in time T₁The nearest passing intersection B₂Automobile A₂Time point T of₃Thereby obtaining a vehicle B₂Passing through intersection B₂Velocity information V of₃；

S6, at time T₁The control center S obtains the distance information L and the speed limit information V between two intersections_{Limit of}Simultaneously acquire intersection B₂Traffic control signal lamp T₁Current remaining control time information t corresponding to time point_{Red wine}And t_GreenGet the intersection B₂Control signal period T of traffic control signal lamp_{Red wine}，T_GreenAnd T_{Yellow colour}Calculating the automobile A₁Passing through intersection B₂Guided travel time T of_Fortune；

S7, calculating the current time point T₁Automobile A₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The control center sends the vehicle speed information V_{Guiding device}Push to time point T in broadcast mode₁Passing through intersection B₁Automobile A₁；

S8, when the control center S passes through the electronic identification detector C₂Detect the car A₁Passing through intersection B₂Thereafter, the control center S terminates the pair of cars A₁Guided by the speed of the vehicle at intersection B₂The next crossing B ahead of the driving direction₃And repeating the steps.

Preferably, the average velocity V described in S3_aThe calculation method comprises the following steps:

V_{flat plate}＝L/(T₂-T₁)

Wherein L is the intersection B₁And B₂Length of road between, T₁Is a car A₁In B₁Intersection electronic identification detector C₁Recording the point in time of passage, T₂Is a car A₁In B₂Intersection electronic identification detector C₂Recording the time point of passage;

if V_{Flat plate}Greater than or equal to V_{Limit of}Then the average speed V of the road section_a＝V_{Limit of}；

If V_{Flat plate}Less than V_{Limit of}Then the average speed V of the road section_a＝V_{Flat plate}。

Preferably, T is as described in S6_FortuneThe calculation method comprises the following steps:

s601, calculating average vehicle speed V_aFrom B₁Driving to B at the intersection₂Theoretical time T at intersection_{Theory of things}＝L/V_a；

S602, current road junction B₂Signal of (2) control the automobile a1 guide travel time T at the green light_FortuneThe calculation method comprises the following steps:

b. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}Guiding the running time T_Fortune＝T_{Theory of things}；

b. If the intersection B₂Green light control residual time t_Green＜T_{Theory of things}And T is_{Transport residue}≤(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}And T is_{Transport residue}＞(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

s603, current road junction B₂Signal of (2) control the car A at the red light₁Guide travel time T_FortuneThe calculation method comprises the following steps:

a. if the intersection B₂Red light control residual time t_{Red wine}≥T_{Theory of things}Guide travel time T_Fortune＝t_{Red wine}；

b. If the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}≤T_GreenTime, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}＞T_GreenThen, the guide travel time T is:

t described in S602 and S603_{Red wine}And t_GreenIndicating traffic signal light at T₁The remaining control time of the moment of time,T_{red wine}、T_GreenAnd T_{Yellow colour}A control signal period representing a traffic control signal;

n is a rounded value and is less than or equal to T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green) The method comprises the following steps: n ═ T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green)]；

T_{Transport residue}＝L/V_a-n·(T_{Yellow colour}+T_{Red wine}+T_Green) Since the actual running time is hardly an integer multiple of the control signal period of the signal lamp, the remaining time needs to be calculated.

Preferably, the automobile A described in S7₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The calculation method is as follows: v_{f lead}＝L/T_Fortune；

If V_{f lead}＞V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_a；

If V_{f lead}≤V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_{f lead}；

If V_{f lead}＞V_{Limit of}Then V is_{Guiding device}＝V_a。

Compared with the prior art, the invention has the following advantages:

1. the invention realizes the advanced prejudgment of the speed and the required time of the crossing passing by the automobile in front of the running automobile by installing the automobile electronic mark detection device at the intersection of the road, utilizing the electronic mark of the adjacent intersection to detect the information of the automobile, collecting the information of the type, the time and the like of the passing automobile, calculating and obtaining the average road running speed of the automobile passing the intersection and along the line, combining the periodic change of the traffic signal lamp control time of the intersection in front of the automobile, conjecturing the ideal speed of the current running automobile passing the next intersection, utilizing the cloud broadcasting to broadcast the prejudgment information of the speed to the automobile about to enter the next intersection, realizing the information synergy and interactive utilization between the speed of the intersection and the traffic control signal, reducing the waiting time of the intersection, realizing the real-time guidance of the running speed of the road between the continuous intersections, and being beneficial, the time waste caused by stopping and starting of the vehicle at the intersection is reduced, the traffic efficiency of the intersection is improved, the traffic jam problem of the intersection is reduced, and the traffic accidents of the intersection caused by the driver being anxious and the too fast speed are reduced.

2. The invention can effectively reduce blind operation caused by driving information loss, avoid safety accidents, improve the driving comfort of drivers, reduce the waiting time of red light, excavate the value of the existing electronic identification system, play the role of information and promote technical progress.

Detailed Description

The invention comprises the following steps:

s1, automobile A₁Passing through intersection B₁When it is set at B₁Electronic mark detector C at road junction₁At T₁Detection of the automobile A at a time Point₁Velocity information V of₁Time information T₁And velocity information V₁Uploading to a control center S;

s2, automobile A₁Continuously driving through the next crossing B₂When is at B₂Electronic mark detector C at road junction₂At T₂Detection of the automobile A at a time Point₁Velocity information V of₂Time information T₂And velocity information V₂Uploading to a control center S;

s3, control center S according to the intersection B₁And B₂Road length L between, obtaining cars A₁By B₁And B₂Average speed V of road between intersections_aAnd the vehicle speed information V is obtained_aRecording the data into a database of the control center S for retrieval;

s4, the control center S sends T₁The time point is taken as the current time point, and the time point T is₁The automobile A₁Passing through intersection B₂The vehicle speed of (2) as a guidance target;

s5, the control center S searches the database to search for the intersection B₂From the current point in time T₁The nearest passing intersection B₂Automobile A₂When (2) is in contact withIntermediate point T₃Thereby obtaining a vehicle B₂Passing through intersection B₂Velocity information V of₃；

S6, at time T₁The control center S obtains the distance information L and the speed limit information V between two intersections_{Limit of}Simultaneously acquire intersection B₂Traffic control signal lamp T₁Current remaining control time information t corresponding to time point_{Red wine}And t_GreenGet the intersection B₂Control signal period T of traffic control signal lamp_{Red wine}，T_GreenAnd T_{Yellow colour}Calculating the automobile A₁Passing through intersection B₂Guided travel time T of_Fortune；

S7, calculating the current time point T₁Automobile A₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The control center sends the vehicle speed information V_{Guiding device}Push to time point T in broadcast mode₁Passing through intersection B₁Automobile A₁；

S8, when the control center S passes through the electronic identification detector C₂Detect the car A₁Passing through intersection B₂Thereafter, the control center S terminates the pair of cars A₁Guided by the speed of the vehicle at intersection B₂The next crossing B ahead of the driving direction₃And repeating the steps.

Preferably, the average velocity V described in S3_aThe calculation method comprises the following steps:

V_{flat plate}＝L/(T₂-T₁)

Wherein L is the intersection B₁And B₂Length of road between, T₁Is a car A₁In B₁Intersection electronic identification detector C₁Recording the point in time of passage, T₂Is a car A₁In B₂Intersection electronic identification detector C₂Recording the time point of passage;

if V_{Flat plate}Greater than or equal to V_{Limit of}Then the average speed V of the road section_a＝V_{Limit of}；

If V_{Flat plate}Less than V_{Limit of}Then the average speed V of the road section_a＝V_{Flat plate}。

In this embodiment, T is described in S6_FortuneThe calculation method comprises the following steps:

s601, calculating average vehicle speed V_aFrom B₁Driving to B at the intersection₂Theoretical time T at intersection_{Theory of things}＝L/V_a；

S602, current road junction B₂Signal of (2) control the automobile a1 guide travel time T at the green light_FortuneThe calculation method comprises the following steps:

c. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}Guiding the running time T_Fortune＝T_{Theory of things}；

b. If the intersection B₂Green light control residual time t_Green＜T_{Theory of things}And T is_{Transport residue}≤(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}And T is_{Transport residue}＞(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

s603, current road junction B₂Signal of (2) control the car A at the red light₁Guide travel time T_FortuneThe calculation method comprises the following steps:

a. if the intersection B₂Red light control residual time t_{Red wine}≥T_{Theory of things}Guide travel time T_Fortune＝t_{Red wine}；

b. If the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}≤T_GreenTime, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}＞T_GreenThen, the guide travel time T is:

t described in S602 and S603_{Red wine}And t_GreenIndicating traffic signal light at T₁Remaining control time of moment, T_{Red wine}、T_GreenAnd T_{Yellow colour}A control signal period representing a traffic control signal;

n is a rounded value and is less than or equal to T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green) The method comprises the following steps: n ═ T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green)]；

T_{Transport residue}＝L/V_a-n·(T_{Yellow colour}+T_{Red wine}+T_Green)。

In this embodiment, the automobile a described in S7₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The calculation method is as follows: v_{f lead}＝L/T_Fortune；

If V_{f lead}＞V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_aWill V_aIs sent to the automobile A as the final guiding speed information₁。

If V_{f lead}≤V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_{f lead}Will V_{Guiding device}Is sent to the automobile A as the final guiding speed information₁。

If V_{f lead}＞V_{Limit of}Then V is_{Guiding device}＝V_aWill V_aIs sent to the automobile A as the final guiding speed information₁。

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.

Claims (4)

1. A method for realizing speed guidance of an intersection by using electronic identification information of an automobile is characterized by comprising the following steps:

s1, automobile A₁Passing through intersection B₁When it is set at B₁Electronic mark detector C at road junction₁At T₁Detection of the automobile A at a time Point₁Velocity information V of₁Time information T₁And velocity information V₁Uploading to a control center S;

s2, automobile A₁Continuously driving through the next crossing B₂When is at B₂Electronic mark detector C at road junction₂At T₂Detection of the automobile A at a time Point₁Velocity information V of₂Time information T₂And velocity information V₂Uploading to a control center S;

s3, control center S according to the intersection B₁And B₂Road length L between, obtaining cars A₁By B₁And B₂Average speed V of road between intersections_aAnd the vehicle speed information V is obtained_aRecording the data into a database of the control center S for retrieval;

s4, the control center S sends T₁The time point is taken as the current time point, and the time point T is₁The automobile A₁Passing through intersection B₂The vehicle speed of (2) as a guidance target;

s5, the control center S searches the database to search for the intersection B₂From the current point in time T₁The nearest passing intersection B₂Automobile A₂Time point T of₃Thereby obtaining a vehicle B₂Passing through intersection B₂Velocity information V of₃；

S6, at time T₁The control center S obtains the distance information L and the speed limit information V between two intersections_{Limit of}Simultaneously acquire intersection B₂Traffic control signal lamp T₁Current remaining control time information t corresponding to time point_{Red wine}And t_GreenGet the intersection B₂Control signal period T of traffic control signal lamp_{Red wine}，T_GreenAnd T_{Yellow colour}Calculating the automobile A₁Passing through intersection B₂Guided travel time T of_Fortune；

S7, calculating the current time point T₁Automobile A₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The control center sends the vehicle speed information V_{Guiding device}Push to time point T in broadcast mode₁Passing through intersection B₁Automobile A₁；

S8, when the control center S passes through the electronic identification detector C₂Detect the car A₁Passing through intersection B₂Thereafter, the control center S terminates the pair of cars A₁Guided by the speed of the vehicle at intersection B₂The next crossing B ahead of the driving direction₃And repeating the steps.

2. The method for guiding vehicle speed at crossroad by using electronic identification information of vehicle as claimed in claim 1, wherein said average speed V is in S3_aThe calculation method comprises the following steps: v_{Flat plate}＝L/(T₂-T₁)

Wherein L is the intersection B₁And B₂Length of road between, T₁Is a car A₁In B₁Intersection electronic identification detector C₁Recording the point in time of passage, T₂Is a car A₁In B₂Intersection electronic identification detector C₂Recording the time point of passage;

if V_{Flat plate}Greater than or equal to V_{Limit of}Then the average speed V of the road section_a＝V_{Limit of}；

If V_{Flat plate}Less than V_{Limit of}Then the average speed V of the road section_a＝V_{Flat plate}。

3. The method as claimed in claim 2, wherein the crossroad is implemented by using electronic identification information of automobilesThe method for guiding the speed of a vehicle is characterized in that T in S6_FortuneThe calculation method comprises the following steps:

s601, calculating average vehicle speed V_aFrom B₁Driving to B at the intersection₂Theoretical time T at intersection_{Theory of things}＝L/V_a；

S602, current road junction B₂Signal of (2) control the automobile a1 guide travel time T at the green light_FortuneThe calculation method comprises the following steps:

a. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}Guiding the running time T_Fortune＝T_{Theory of things}；

b. If the intersection B₂Green light control residual time t_Green＜T_{Theory of things}And T is_{Transport residue}≤(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Green light control residual time t_Green≥T_{Theory of things}And T is_{Transport residue}＞(T_Green+T_{Yellow colour}) Time, guide travel time T_FortuneComprises the following steps:

s603, current road junction B₂Signal of (2) control the car A at the red light₁Guide travel time T_FortuneThe calculation method comprises the following steps:

a. if the intersection B₂Red light control residual time t_{Red wine}≥T_{Theory of things}Guide travel time T_Fortune＝t_{Red wine}；

b. If the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}≤T_GreenTime, guide travel time T_FortuneComprises the following steps:

c. if the intersection B₂Red light control remaining time: t is t_{Red wine}＜T_{Theory of things}And T is_{Transport residue}＞T_GreenThen, the guide travel time T is:

t described in S602 and S603_{Red wine}And t_GreenIndicating traffic signal light at T₁Remaining control time of moment, T_{Red wine}、T_GreenAnd T_{Yellow colour}A control signal period representing a traffic control signal;

n is a rounded value and is less than or equal to T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green) The method comprises the following steps: n ═ T_{Theory of things}/(T_{Yellow colour}+T_{Red wine}+T_Green)]；

T_{Transport residue}＝L/V_a-n·(T_{Yellow colour}+T_{Red wine}+T_Green)。

4. The method of claim 1, wherein said vehicle A in S7 is guided by electronic identification information of vehicle₁Passing through intersection B₂Guide vehicle speed V_{Guiding device}The calculation method is as follows: v_{f lead}＝L/T_Fortune；

If V_{f lead}＞V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_a；

If V_{f lead}≤V_aAnd V is_{f lead}＜V_{Limit of}Then V is_{Guiding device}＝V_{f lead}；

If V_{f lead}＞V_{Limit of}Then V is_{Guiding device}＝V_a。