KR20080052316A - The method and apparatus for advanced traffic control using gps navigation - Google Patents

Abstract

An apparatus and a method for controlling traffic in real time using GPS navigation are provided to reduce maintenance cost by collecting vehicle traveling information and destination information using a GPS(Global Positioning System) navigation device mounted on vehicles. Vehicle traveling information periodically outputted from a GPS(Global Positioning System) navigation device, mounted on vehicles, is received(300). Traffic information is determined based on the received vehicle traveling information(302). Signaling system is varied based on the determined traffic information(304). Control signals based on the varied signal system are outputted to a traffic signal controller(306). Destination information of the vehicles, periodically outputted from the GPS navigation device, is received. The traffic information is determined based on the received destination information.

Description

{THE METHOD AND APPARATUS FOR ADVANCED TRAFFIC CONTROL USING GPS NAVIGATION}

The present invention relates to an apparatus and method for real-time traffic control, and more particularly, to an apparatus and method for controlling traffic using information transmitted from Global Positioning System (GPS) navigation.

The present invention is derived from the research conducted as part of the IT new growth engine core technology development project of the Ministry of Information and Communication and the Ministry of Information and Telecommunications Research and Development. Adaptive Embedded OS Technology Development].

Various methods have been proposed for efficient control and management of traffic. Among them, intelligent technologies, such as electronics, communication, and control, are integrated into existing transportation systems such as roads, railroads, and routes to secure a fast and safe traffic environment and enable efficient operation. A system (ITS: Intelligent Transportation Systems) has emerged.

ITS services include Advanced Traffic Management Systems (ATMS), Advanced Traveler Information Systems (ATIS), Advanced Public Transportation Systems (APTS), and Advanced Freight Transportation (CVO). There are five areas: Vehicle Operations and Advanced Vehicle & Highway Systems (AVHS).

Among them, the advanced traffic management field is equipped with a system capable of detecting traffic information such as vehicle characteristics and speed on a road, for example, a Dedicated Short Range Communications (DSRC) base station. The main function is to analyze the traffic conditions in real time through information exchange with a short-range communication terminal, and to perform real-time traffic control (ATC).

However, there is a problem in that a huge cost is required to install and maintain a short-range communication base station on the road, and also a considerable cost is required to install a short-range communication terminal in the vehicle.

Accordingly, an object of the present invention is to provide an apparatus and method for real-time traffic control by collecting vehicle driving information such as vehicle position and speed and destination information using GPS navigation mounted on a vehicle.

In addition, another object of the present invention can be understood by the following description and an embodiment of the present invention.

To this end, a traffic control method according to an exemplary embodiment of the present invention includes: (a) receiving vehicle driving information periodically output from a GPS navigation installed in a vehicle; determining traffic information based on the received vehicle driving information; And (c) changing the signaling system based on the determined traffic information.

In addition, the traffic control apparatus according to an embodiment of the present invention for this purpose, GPS information receiving unit for receiving the vehicle driving information periodically output from the GPS navigation installed in the vehicle; A traffic information determination unit determining traffic information based on the received vehicle driving information; And a signaling system changing unit which changes the signaling system based on the determined traffic information.

As described above, the present invention has an advantage of real-time traffic control by collecting vehicle driving information and destination information using GPS navigation mounted on the vehicle.

In addition, the present invention has the advantage of reducing the cost for the installation and maintenance of new equipment by using the GPS navigation already mounted on the vehicle in collecting vehicle driving information and destination information.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a real-time traffic control device 120 according to an embodiment of the present invention. Hereinafter, the configuration and operation of the real-time traffic control device 120 to which the present invention is applied will be described in detail with reference to FIG. 1.

The real-time traffic control device 120 according to an embodiment of the present invention, the GPS information receiving unit 122, traffic information determination unit 124, the signal system changing unit 126 and the signal system output unit 128 .

The GPS information receiver 122 according to an embodiment of the present invention receives vehicle driving information and destination information periodically output from the GPS navigation 100 through the mobile communication terminal 110 connected to the GPS navigation 100. Then, the received information is output to the traffic information determination unit 124.

Information transmission between the GPS navigation 100 and the mobile communication terminal 110 may be performed using a wired line, Bluetooth, an Infrared Data Association (IrDA), or the like. In addition, when the GPS navigation 100 can directly transmit and receive data using the GPS information receiver 122, a wireless LAN, and a WiBro (WiBro: Wireless Broadband), the mobile communication terminal 110 does not pass through. You can also send information directly.

The vehicle driving information is meant to include the current position, speed, etc. of the vehicle, and the destination information is meant to include a destination of the vehicle, an expected route to the destination, and the like. When the vehicle navigation information is transmitted in the GPS navigation, the position of the point where the vehicle has passed and the speed of the vehicle at the position may be transmitted. For example, instead of transmitting vehicle driving information every 1 minute, the vehicle driving information every 1 minute is output to the real-time traffic control device 120 every 5 minutes at once, thereby reducing the load due to the information transmission. . When the GPS navigation 100 is a communication terminal equipped with a GPS navigation function, data may be directly transmitted from the GPS navigation 100 to the GPS information receiver 122.

The traffic information determining unit 124 according to an embodiment of the present invention determines the traffic information based on the vehicle driving information and the destination information received from the GPS information receiving unit 122. The traffic information is meant to include the number of vehicles running on the road, the speed, and the like. In addition, the traffic information determination unit 124 may exclude the vehicle driving information of the vehicle (for example, the vehicle running in the parking lot of the building) that is not operating on the road in determining the traffic information.

In addition, the traffic information determination unit 124 according to an embodiment of the present invention uses the vehicle driving information and the destination information of the vehicle, even when the vehicle is not running on the road, if the destination of the vehicle is set. Traffic information can be determined.

The signaling system changing unit 126 according to an embodiment of the present invention changes the signaling system based on the traffic information received from the traffic information determining unit 124, and converts the changed signaling system into the signaling system output unit 128. Output

The signal system output unit 128 according to an embodiment of the present invention outputs a control signal according to the signal system received from the signal system changer 126 to the traffic signal controller 130. The traffic signal controller 130 refers to a device used to control the flow of traffic such as a traffic light.

In determining the traffic information and changing the signaling system, a queuing theory and various statistical theories may be used, and in the signal system changing method at an intersection, a method of minimizing a maximum waiting time of a vehicle in each lane. This means minimizing the average waiting time for all cars passing through the intersection. For reference, an extended queue model created by considering the number of vehicles in the queue, the average waiting time of the vehicle, and the waiting time of the vehicle by two controllers, LQR (Linear Quadratic Regulator) and NMPC (Nonlinear Model Predictive Controller) at the intersection. ("Balancing The Waing Times In A Simple Traffic Intersection Model", In: Proc. 11th IFAC Symposium on Control in Transportation System, Delft, The Netherland, August 2006. Michal Kutil, Zdenek Hanzalek, Anton Cervin) , "Optimized traffic flow at a single intersection: traffic responsive signalization", In: stacks.iop.org/JPhysA/37/561, Published 7 January 2004, M Ebrahim Fouladvand, Zeinab Sadjadi and M Reza Shaebani) have been presented.

2 is a flowchart illustrating vehicle driving information and a destination transmission in the GPS navigation 100 according to an embodiment of the present invention, and FIG. 3 is a traffic in the real-time traffic control apparatus 120 according to an embodiment of the present invention. Flow chart showing the control process. Hereinafter, a real time traffic control method to which the present invention is applied will be described in detail with reference to FIGS. 2 and 3.

First, referring to FIG. 2, a process of outputting vehicle driving information and destination information from the GPS navigation 100 is as follows.

In step 200 of FIG. 2, the GPS navigation 100 according to an embodiment of the present invention determines whether the vehicle is in operation and proceeds to step 202 if the vehicle is in operation. For example, even when the GPS navigation 100 is in operation, when the vehicle is not on the road, such as whether the vehicle is in a parking lot in the building, it may be determined that the vehicle is not in operation.

In step 202, the GPS navigation 100 according to an embodiment of the present invention determines whether the destination of the vehicle is set, proceeds to step 204 if the destination of the vehicle is set, otherwise step 206 Proceed to).

In step 204, the GPS navigation 100 according to an embodiment of the present invention periodically outputs vehicle driving information and destination information to the real-time traffic control device 120, and proceeds to step 200.

Meanwhile, in step 206, the GPS navigation 100 according to an embodiment of the present invention outputs vehicle driving information to the real-time traffic control apparatus 120, and proceeds to step 200.

Subsequently, a process of real-time traffic control according to the vehicle driving information and the destination information received from the GPS navigation 100 will be described with reference to FIG. 3.

In operation 300 of FIG. 3, the vehicle information receiver 122 according to an embodiment of the present disclosure receives vehicle driving information and destination information output from the GPS navigation 100, and determines the received driving information as traffic information. Output to the unit 124.

In operation 302, the traffic information determiner 124 according to an embodiment of the present disclosure determines the traffic information based on the vehicle driving information and the destination information received from the vehicle information receiver 122, and determines the determined traffic information. Is output to the signal system changing unit 126.

In step 304, the signal system changing unit 126 according to an embodiment of the present invention changes the signal system according to the traffic information received from the traffic information determination unit 124, and outputs the changed signal system to the signal system output unit. Output to (128).

In step 306, the signal system output unit 128 according to an embodiment of the present invention outputs a control signal according to the changed signal system to the traffic controller 130.

A real time traffic control method as described above will be described with reference to FIGS. 4 to 6. 4 to 6 are exemplary views for showing a real-time traffic control process according to an embodiment of the present invention.

4 illustrates a road connecting the residential complex A 400, the residential complex B 410, the industrial complex A 420, the industrial complex B 430, and the gymnasium 440. Arrow 401 represents the movement of the vehicle starting from residential complex A 400 to the gym 440, and arrow 411 represents the movement of the vehicle departing from residential complex B 410 and towards the gym 440. On weekdays, it is assumed that traffic flows smoothly between residential complexes A, B (400, 410) and industrial complexes A, B (420, 430). If there is an event at the gym 440 on Sunday, the majority of people living in residential complexes A and B 400 and 410 may move to the gym 440 by using their own vehicles. This is because the signal system of weekday traffic flows may not be appropriate for such vehicle movement.

Hereinafter, a real-time traffic control process according to an embodiment of the present invention for traffic jams that may occur in areas A and B 450 and 460 will be described in more detail with reference to FIGS. 5 and 6.

FIG. 5 is an enlarged view of region A 450, and region A 450 is a reciprocating six-lane road, and assumes that there are two lanes of variable lanes in the center.

FIG. 5A illustrates a road situation when three lanes are equally distributed on both sides of the center line. The lane to the right is congested due to the vehicle moving to participate in the event, and the lane to the left is relatively relaxed. At this time, the real-time traffic control device 120 determines the traffic information of the area A 450 based on the vehicle driving information output from the GPS navigation 100. The real-time traffic control device 120 that determines the traffic information of the area A (450) changes the signal system for the area A (450). According to an embodiment of the present invention, the lane toward the left among the variable lanes in the center is moved to the right. The decision is made to change to face. Thereafter, the traffic control device 120 outputs a control signal according to the changed signal system to the traffic signal controller 130 in the area A 450.

FIG. 5 (b) shows a state after the control signal according to the changed signal system is output such that the variable lane heading to the left is directed to the right. Compared with (a) of FIG. 5, it can be seen that traffic flows more smoothly on the road shown in (b) of FIG. 5.

The change of the signal system as described above with reference to FIG. 5 may be made with reference to driving information transmitted from a vehicle already operating in a corresponding region, and further, destination information set in the GPS navigation 100 and the vehicle according to the destination. By referring to the expected movement route, it is possible to induce a smoother traffic flow by changing the signal system before the traffic jam occurs.

FIG. 6 is an enlarged view of the area B 460, and in the area B 460, the traffic light A 611 indicating the left turn signal from the area A 450 to the gym 440, and the industrial park B at the gym 440. Assume that there is a traffic light B 631 indicating a left turn signal to 430 and a traffic light C 621 indicating a straight signal from the industrial zone B 430 to the area A 450.

It is assumed that the traffic lights A, B, and C 611, 621, and 631 of the intersection area B 460 all have the same length of lighting time on weekdays. For example, if each traffic light has a lighting time of 20 seconds, 60 seconds, which is the sum of the lighting time of the three traffic lights, becomes the signal lighting cycle in the area B 460. By the way, as shown in the embodiment of the present invention, the vehicle 610 to move from the area A (450) to the gym 440 on Sundays when there is an event in the gym 440, but more than the weekday, satin B in the gym 440 There will be very few vehicles 630 moving to 430 and vehicles 620 from Satin B 430 to area A 450.

Accordingly, the real-time traffic management apparatus 120 changes the signaling system based on the vehicle driving information and the destination information received from the vehicle 610 that is driving in the congested traffic flow while waiting for the left turn signal. The driving information and the destination information of the vehicles 620 and 630 of other lanes are also used to change the signal system. The real-time traffic management apparatus 120 which changed the signal system outputs the changed signal system to the traffic lights A, B, and C (611, 621, 631). For example, if the lighting time of each of the traffic lights A, B, and C 611, 621, and 631 before the signal system change is 20 seconds, the left turn from the area A 450 to the gym 440 by the changed signal system. The lighting time of the traffic light A 611 displaying the signal is 30 seconds, the lighting time of the traffic light B 631 indicating the left turn signal from the gymnasium 440 to the industrial complex B 430 is 15 seconds, and the industrial B B 430 is lit. The lighting time of the traffic light C 621 indicating the straight signal to the area A 450 is changed to 15 seconds. By applying such a changed signaling system to the area B 460, it is possible to provide a smooth flow of traffic for the vehicle 610 from the area A 450 to the gym 440.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

1 is a block diagram of a real-time traffic control apparatus according to an embodiment of the present invention,

2 is a flowchart illustrating transmission of vehicle driving information and destination information in GPS navigation according to an embodiment of the present invention;

3 is a flowchart illustrating a traffic control process in a real-time traffic control apparatus according to an embodiment of the present invention;

4 to 6 are exemplary views for showing a real-time traffic control process according to an embodiment of the present invention.

Claims (16)

(a) receiving vehicle driving information periodically output from a GPS navigation installed in the vehicle; determining traffic information based on the received vehicle driving information; And (c) changing the signaling system based on the determined traffic information; Real time traffic control method comprising a. The method of claim 1, (d) outputting a control signal based on the changed signaling system to a traffic signal controller; Real time traffic control method further comprising. The method of claim 1, Receiving destination information of the vehicle periodically output from the GPS navigation; And Determining the traffic information based on the received destination information Real time traffic control method further comprising. The method of claim 3, wherein the vehicle driving information and the destination information, Received via a mobile communication terminal or directly from the GPS navigation Real time traffic control method. The method according to any one of claims 1 to 3, wherein in step (b), In determining the traffic information, the vehicle driving information of the vehicle running on the road is used. Real time traffic control method. The method of claim 3, wherein in step (b), In determining the traffic information, the destination information of the vehicle in which the destination is set among the vehicles not running on the road is used. Real time traffic control method. The vehicle driving information according to any one of claims 1 to 3, wherein At least one of a current location and a current speed of the vehicle, a location of a location where the vehicle has passed, and a speed at a location where the vehicle has passed by Real time traffic control method. The method of claim 3, 4 or 6, wherein the destination information, A destination location of the vehicle, an expected route of the vehicle to the destination Real time traffic control method. A GPS information receiver configured to receive vehicle driving information periodically output from a GPS navigation installed in the vehicle; A traffic information determination unit determining traffic information based on the received vehicle driving information; And Signaling system changing unit for changing the signaling system based on the determined traffic information Real time traffic control device comprising a. The method of claim 9, Signal system output unit for outputting a control signal based on the changed signal system received from the signal system changing unit to the traffic signal controller Real time traffic control device further comprising. The method of claim 9, wherein the GPS information receiver, Receive destination information of the vehicle periodically output from the GPS navigation, The traffic information determination unit determines traffic information based on the received vehicle driving information and the received destination information. Real time traffic control device. The method of claim 11, wherein the GPS information receiver, Receiving the vehicle driving information and the destination information via a mobile communication terminal or directly from the GPS navigation Real time traffic control device. The traffic information determination unit according to any one of claims 9 to 11, In determining the traffic information, the vehicle driving information of the vehicle running on the road is used. Real time traffic control device. The method of claim 11, wherein the traffic information determination unit, In determining the traffic information, the destination information of the vehicle in which the destination is set among the vehicles not running on the road is used. Real time traffic control device. The vehicle driving information according to any one of claims 9 to 11, At least one of a current location and a current speed of the vehicle, a location of a location where the vehicle has passed, and a speed at a location where the vehicle has passed by Real time traffic control device. The method according to any one of claims 11, 12 and 14, wherein the destination information, A destination location of the vehicle, an expected route of the vehicle to the destination Real time traffic control device.

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