KR101590016B1 - Real time traffic signal control system - Google Patents

Real time traffic signal control system Download PDF

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Publication number
KR101590016B1
KR101590016B1 KR1020140117408A KR20140117408A KR101590016B1 KR 101590016 B1 KR101590016 B1 KR 101590016B1 KR 1020140117408 A KR1020140117408 A KR 1020140117408A KR 20140117408 A KR20140117408 A KR 20140117408A KR 101590016 B1 KR101590016 B1 KR 101590016B1
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vehicle
lane
information
intersection
weight
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KR1020140117408A
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Korean (ko)
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이동주
김대식
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주식회사 큐씨디정보통신기술
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • 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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  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

A vehicle information communication unit having an antenna having directional characteristics installed for each lane and transmitting and receiving information from the vehicle; And a controller for controlling operation of a traffic light located at an intersection by using the information received by the vehicle information communication unit.
According to the traffic signal control system, it is possible to control a traffic light located at an intersection in real time by calculating weight values reflecting various road conditions while using different vehicle driving information by lane.

Description

[0001] REAL TIME TRAFFIC SIGNAL CONTROL SYSTEM [

The present invention relates to a real-time traffic signal control system, and more particularly, to a traffic signal control system for real-time controlling a traffic light located at an intersection by using lane-by-lane traffic information.

In Korean Patent Laid-Open Patent Application No. 2011-0127520 (Traffic Signal Control System and Traffic Signal Control Method Using It, November 25, 2011), the number of vehicles waiting in each direction of an intersection is determined, Discloses a technique for variably controlling a traffic signal time for allowing vehicles to pass through an intersection within a set range.

However, Korean Patent Laid-Open Publication No. 2011-0127520 does not disclose a method for controlling a traffic signal in a case where a plurality of lanes exist for one intersection and the stagnation state is different for each lane.

Korean Patent No. 1211645 (a real-time traffic signal generation control system and a real-time traffic signal generation control method using the same) includes a vehicle sensor that detects a vehicle passing by each lane at an intersection and generates a vehicle detection signal for each lane; Calculating a number of vehicles passing by each lane on the basis of the vehicle detection signals for each lane, calculating traffic weight weights for each lane by using the number of lane passing vehicles by each lane, A main controller configured to calculate a star signal display time and generate information on the signal display time of each lane; A signal controller and a distributor for distributing each lane-by-lane signal from information on the signal display time of each lane; And a signal lamp operated at a signal display time controlled by the signal for each lane.

However, although the method disclosed in Korean Patent Registration No. 1211645 discloses a method of controlling the traffic signal by lane, it is difficult to reflect various road conditions .

An object of the present invention is to provide a traffic signal control system for controlling a traffic light located at an intersection in real time by calculating weight values reflecting various road conditions by using different vehicle driving information for each lane, And the like.

According to a preferred embodiment of the present invention, there is provided a traffic signal control system comprising: a vehicle information communication unit having an antenna having directional characteristics installed on a lane basis; And a control unit for controlling the operation of a signal lamp located at an intersection using the information received by the vehicle information communication unit.

And the vehicle information communication unit receives the running information of each vehicle from the vehicle located in each lane.

In addition, the control unit uses the logarithmic information of the vehicle located in the corresponding lane before entering the intersection as basic information, and calculates the first weight, which is calculated using the time passing through the intersection according to the type of the vehicle, It is preferable to control the traffic signal for each lane by reflecting it on the logarithmic information. Here, the first weight is calculated using a sum of times of passing through intersections of all the vehicles located on the lane, and the smaller the sum, the smaller the sum is.

The control unit preferably reflects the second weight value calculated using the acceleration information of the vehicle to the logarithmic information of the vehicle, and controls the traffic signal for each lane. Here, the second weight is calculated using an average acceleration value of the vehicle located in the lane, and the second weight is smaller as the average acceleration value of the vehicle located in the lane is larger.

Preferably, the control unit reflects the third weight, which is calculated using the running information of the other vehicle before entering the upper intersection located next to the current intersection where the vehicle is located, to the algebraic information of the vehicle, Is controlled. Here, the third weight becomes smaller as the number of vehicles before entering the upper intersection increases.

In addition, the control unit controls the traffic signal so that the emergency vehicle can preferentially pass through the intersection when entering the vehicle using the current position and the destination information received from the emergency vehicle. That is, the control unit controls the traffic signal such that, when the emergency vehicle passes through the intersection, the signal lamp associated with the corresponding lane of the upper intersection located next to the moving path of the emergency vehicle is preferentially displayed.

In addition, the control unit provides the traffic congestion information to the terminal by using the collected intersecting road and lane-by-lane traffic information. Preferably, the control unit generates the bypass road information using the traffic congestion information.

To summarize, the control unit of the traffic signal control system according to the present invention includes: basic information; A first weight calculated using a time passing through an intersection according to a type of vehicle; A second weight calculated using acceleration information of the vehicle; And the third weight calculated using the driving information of the other vehicle before entering the upper intersection located next to the current intersection where the corresponding vehicle is located is preferably used to calculate the display time of the signal lamp S1 related to the corresponding lane . At this time, the display time of the traffic light S1 related to the lane can be calculated by the following equation.

Figure 112014084637636-pat00001
Where w1 is a second weight, w13 is a third weight, and c1 is a weight of the vehicle located in the lane of the vehicle. In this case, t1 is the display time of the traffic light S1 related to the lane, k is a proportional constant, w11 is a first weight, w12 is a second weight, Respectively.)

According to the traffic signal control system of the preferred embodiment of the present invention, it is possible to control the traffic lights located at the intersections in real time by calculating the weights reflecting various road conditions while using the lane-by-lane car driving information.

1 is a configuration diagram of a traffic signal control system according to a preferred embodiment of the present invention;
2 is an explanatory diagram of a vehicle having a directional antenna and a vehicle information communication unit;
3 is an explanatory diagram of a third weight;

Hereinafter, a traffic signal control system according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be understood that the following embodiments of the present invention are only for embodying the present invention and do not limit or limit the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1 is a configuration diagram of a traffic signal control system 100 according to a preferred embodiment of the present invention.

1, the traffic signal control system 100 according to an exemplary embodiment of the present invention includes a vehicle information communication unit 110 and a control unit 120. As shown in FIG.

The vehicle information communication unit 110 has an antenna having directionality installed for each lane, and plays a role of transmitting and receiving information from the vehicle. At this time, an antenna using a beam forming method can be used as the directional antenna. The mounting position of the antenna having the directionality of the vehicle information communication unit 110 may be a position above the lane.

At this time, each vehicle also needs to be limited so that the communication unit 210 having a directional antenna transmits and receives information only to the corresponding antenna of the corresponding lane. Each of the vehicles also receives vehicle driving information such as the speed and acceleration of each vehicle from the sensor unit such as an ECU (Electronic Control Uint) or G sensor provided in each vehicle together with identification information of the vehicle to the vehicle information communication unit 110 . That is, by adopting the directional antenna of the vehicle and vehicle information communication unit 110, the vehicle information communication unit 110 can receive the running information of each vehicle from the vehicle located in each lane.

Fig. 2 is an explanatory diagram of a vehicle having a directional antenna and a vehicle information communication unit 110. Fig.

The control unit 120 of the present invention controls the operation of a traffic light located at an intersection by using the information received from the vehicle information communication unit 110. Specifically, the control unit 120 ultimately controls the traffic signal in real time by controlling the display time, i.e., the lighting time, of each lane-by-lane traffic light located at an intersection.

The control unit 120 of the present invention includes a vehicle algebraic number calculator 121, a weight calculator 122, an interrupt information generator 123, a traffic information provider 124 and a display time controller 125.

The vehicle algebra number calculator 121 serves to calculate the number of vehicles positioned for each lane before entering the intersection. The vehicle logarithmic calculation method by the vehicle logarithmic calculator 121 may be performed by simply counting the number of vehicles that transmit the vehicle running information to the directional antenna provided for each lane.

The weight calculator 122 reflects various road situation information as weights in the basic information, using the logarithmic information of the vehicle as basic information. The weight calculator 122 includes a first weight calculation module, a second weight calculation module and a third weight calculation module.

The first weight calculation module calculates the first weight using the time passing through the intersection according to the type of the vehicle located in the corresponding lane. Specifically, the first weight is calculated by using the sum of times passing through the intersections of all the vehicles located in the lane concerned. It is preferable that the first weight is smaller as the sum is smaller. For example, even if ten cars are located in the first and second lanes, if only a passenger car is located in the first lane and only the bus is located in the second lane, the display time for the second lane is long It is necessary to adjust the first weight. The first weight calculation module is able to reflect the characteristic according to the type of the vehicle by using the previously stored intersection passage time for each vehicle type.

The second weight calculation module serves to calculate the second weight using the acceleration information of the vehicle. Specifically, the second weight is calculated using the average acceleration value of the vehicle located in the lane, and the second weight is smaller as the average acceleration value of the vehicle located in the lane is larger. That is, assuming that the same ten vehicles are located in the first and second lanes respectively, the fact that the average acceleration value of the first lane is large means that the first lane stagnation is eliminated. Therefore, 2 Weights need to be adjusted.

The third weight calculation module calculates the third weight using the running information of the other vehicle before entering the upper intersection next to the current intersection where the corresponding vehicle is located. The third weight is characterized in that the larger the number of vehicles before entering the upper intersection, the smaller the weight.

3 is an explanatory diagram of the third weight.

For example, when the vehicle A waiting for entry into the current intersection passes through the current intersection, if the vehicle to enter the upper intersection next to the next entry is stagnant in the lane and is difficult to enter the lane before the upper intersection, Increasing the display time of the signal associated with A is meaningless. Therefore, the third weight becomes smaller as the number of vehicles before entering the upper intersection increases.

Specifically, the display time of the traffic light associated with the lane is determined by using the logarithmic information of the vehicle positioned for each lane before entering the intersection, and the first weight, the second weight, and the third weight are reflected in the logarithmic information of the vehicle do.

Next, the interrupt information generator 123 generates an interrupt signal so that an emergency vehicle, such as an ambulance and / or a fire truck, which is required to pass first, can preferentially pass through an intersection. When an interrupt signal is generated, the corresponding traffic light is instantly displayed so that the emergency vehicle can enter the intersection with priority. The interrupt information generator 123 of the present invention uses the current position and the destination information received from the emergency vehicle. The interrupt information generator 123 controls a traffic signal so that a signal lamp associated with the scheduled vehicle lane at the upper intersection next to the emergency vehicle moving path can be instantly displayed when the emergency vehicle passes through the intersection , So that the emergency vehicle can run smoothly without stagnation.

The traffic information providing unit 124 provides the traffic congestion information to the terminal using the collected vehicle traveling information for each intersection and the lane. By providing the terminal to the vehicle, the vehicle operator can receive the traffic congestion information and smoothly travel on the road. In addition, the traffic information provider 124 may generate the bypass road information having a shorter travel expected time by calculating the estimated travel time according to various road information for going to one destination using the traffic congestion information.

Next, the display time controller 125 calculates the display time of the traffic lights associated with the lane by using the information generated / calculated by the vehicle algebraic calculator 121, the weight calculator 122 and the interrupt information generator 123 And / or control the operation of the system.

Specifically, the display time of the traffic light associated with the lane is determined by using the logarithmic information of the vehicle positioned for each lane before entering the intersection, and the first weight, the second weight, and the third weight are reflected in the logarithmic information of the vehicle .

For example, the display time of the traffic light S1 related to the lane can be calculated by the display time controller 125 by the following equation (1).

Figure 112014084637636-pat00002

Where w1 is the second weight, w13 is the third weight, and c1 is the algebraic information of the vehicle located in the lane of the vehicle. Here, t1 is the time of the traffic light S1 related to the lane, k is the proportional constant, w11 is the first weight, w12 is the second weight, Respectively.

Further, the display time of the traffic light S2 related to another lane can be calculated by the following equation (2).

Figure 112014084637636-pat00003

Where w2 is the second weight, w23 is the third weight, and c2 is the algebraic information of the vehicle located in the other lane, and t2 is the time of the traffic light S2 associated with the other lane, k is the proportionality constant, w21 is the first weight, w22 is the second weight, Respectively.

Further, by adjusting the k value appropriately, the display period of the traffic light of the intersection can be adjusted.

Also, when interrupt information is generated from the interrupt information generator 123, the present time controller 125 preferentially displays a signal lamp associated with the corresponding lane for a predetermined period of time.

As described above, according to the traffic signal control system 100 of the preferred embodiment of the present invention, it is possible to control the traffic lights located at the intersections in real time by calculating the weights reflecting the various road conditions, Able to know.

100: Traffic signal control system
110: vehicle information communication unit 120:
121: Vehicle Algebra Calculator 122: Weight Calculator
123: interrupt information generator 124: traffic information provider
125: Display time controller
210: vehicle communication section

Claims (13)

A vehicle information communication unit having an antenna having directional characteristics installed for each lane and transmitting and receiving information from the vehicle; And
And a control unit for controlling the operation of a traffic light located at an intersection by using the information received by the vehicle information communication unit,
Wherein,
Information on the number of vehicles of the vehicle before entering the intersection;
A first weight calculated using a time passing through an intersection according to a type of vehicle;
A second weight calculated using acceleration information of the vehicle; And
Calculating a display time of a signal lamp (S1) associated with the lane by using a third weight calculated using travel information of another vehicle before entering an upper intersection next to the current intersection where the vehicle is located,
And the display time of the traffic light S1 related to the lane is calculated by the following equation.
Figure 112015120457267-pat00008

Where w1 is a second weight, w13 is a third weight, and c1 is a weight of the vehicle located in the lane of the vehicle. In this case, t1 is the display time of the traffic light S1 related to the lane, k is a proportional constant, w11 is a first weight, w12 is a second weight, Respectively.) The method according to claim 1,
The vehicle information communication unit includes:
And receives the travel information of each vehicle from the vehicle located in each lane. delete The method according to claim 1,
Wherein the first weighting factor
And the sum of the times of passing through the intersections of all the vehicles located in the lane of the lane is calculated, and the smaller the sum, the smaller the sum is. delete The method according to claim 1,
Wherein the second weighting factor
And the average acceleration value of the vehicle located in the lane is calculated using the average acceleration value of the vehicle located in the lane of the lane. delete The method according to claim 1,
Wherein the third weighting factor
Wherein the number of vehicles before entry into the upper intersection decreases as the number of vehicles increases. The method according to claim 1,
Wherein,
Wherein the control unit controls the traffic signal so that the emergency vehicle can preferentially pass through the intersection when entering the vehicle using the current position and the destination information received from the emergency vehicle. 10. The method of claim 9,
Wherein the control unit controls the traffic signal so that the signal lamp related to the scheduled travel lane of the upper intersection located next to the travel path of the emergency vehicle is preferentially displayed when the emergency vehicle passes the intersection. delete delete delete
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106340192A (en) * 2016-10-08 2017-01-18 京东方科技集团股份有限公司 Intelligent traffic system and intelligent traffic control method
CN108091137A (en) * 2017-12-19 2018-05-29 迈锐数据（北京）有限公司 A kind of evaluation method and device of Signalized control scheme
KR20180114729A (en) * 2017-04-11 2018-10-19 한양대학교 산학협력단 Method for estimating position of vehicle using v2v/v2i
CN111081039A (en) * 2019-12-31 2020-04-28 同济大学 Real-time dynamic intersection signal control design method and system

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Publication number Priority date Publication date Assignee Title
JP2010044529A (en) * 2008-08-11 2010-02-25 Sumitomo Electric Ind Ltd Traffic signal control device, traffic parameter calculation device, computer program, traffic signal control method, and traffic parameter calculation method
KR20110127520A (en) * 2010-05-19 2011-11-25 삼성전기주식회사 Traffic signal control system and method of controlling traffic signal using the same
KR101211645B1 (en) * 2012-02-06 2012-12-12 (주)비엔텍아이엔씨 Real-time traffic signal control system and real-time traffic signal control method using the same
JP2013143089A (en) * 2012-01-12 2013-07-22 Honda Motor Co Ltd Traffic signal controller and program

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010044529A (en) * 2008-08-11 2010-02-25 Sumitomo Electric Ind Ltd Traffic signal control device, traffic parameter calculation device, computer program, traffic signal control method, and traffic parameter calculation method
KR20110127520A (en) * 2010-05-19 2011-11-25 삼성전기주식회사 Traffic signal control system and method of controlling traffic signal using the same
JP2013143089A (en) * 2012-01-12 2013-07-22 Honda Motor Co Ltd Traffic signal controller and program
KR101211645B1 (en) * 2012-02-06 2012-12-12 (주)비엔텍아이엔씨 Real-time traffic signal control system and real-time traffic signal control method using the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106340192A (en) * 2016-10-08 2017-01-18 京东方科技集团股份有限公司 Intelligent traffic system and intelligent traffic control method
CN106340192B (en) * 2016-10-08 2020-11-20 京东方科技集团股份有限公司 Intelligent traffic system and intelligent traffic control method
KR20180114729A (en) * 2017-04-11 2018-10-19 한양대학교 산학협력단 Method for estimating position of vehicle using v2v/v2i
KR101952011B1 (en) * 2017-04-11 2019-04-29 한양대학교 산학협력단 Method for estimating position of vehicle using v2v/v2i
CN108091137A (en) * 2017-12-19 2018-05-29 迈锐数据（北京）有限公司 A kind of evaluation method and device of Signalized control scheme
CN108091137B (en) * 2017-12-19 2020-05-05 迈锐数据（北京）有限公司 Method and device for evaluating signal lamp control scheme
CN111081039A (en) * 2019-12-31 2020-04-28 同济大学 Real-time dynamic intersection signal control design method and system

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