KR20180014341A - Apparatus and method for analyzing traffic information of each lane - Google Patents

Abstract

The present invention relates to an apparatus and a method for analyzing traffic information for each lane. The apparatus for analyzing traffic information for each lane comprises: an image input unit for photographing a lane and a surrounding lane that a vehicle drives; a communication unit for obtaining a position and driving information of the vehicle from a sensor installed in the vehicle by communicating with an electronic control unit of the vehicle; and a control unit for calculating a relative distance between the vehicle and a proceeding vehicle for each lane by analyzing an image photographed at predesignated time intervals through the image input unit, calculating the speed for each lane by using the relative distance and the photographing time intervals, and collecting traffic information including the speed for each lane thereafter so as to transmit the same to a traffic information control center.

Description

[0001] APPARATUS AND METHOD FOR ANALYZING TRAFFIC INFORMATION OF EACH LANE [0002]

The present invention relates to an apparatus and method for traffic information analysis by traffic information, and more particularly, to a traffic information analyzing method and method for traffic information traffic information analyzing apparatus and method for measuring traffic information of a lane and a surrounding lane on which a vehicle is traveling, And a traffic information analyzing apparatus and method.

In recent years, many vehicles are equipped with a route providing device that displays a map or a map, guides a route (that is, a route) in the map or map and guides the driving of the vehicle. The manufacturer of such a path providing apparatus performs a lot of research to find and guide an optimum path.

Users want to be provided with a faster and more comfortable way to travel using real-time traffic information, or they want real-time traffic information to be reflected on maps or maps. Therefore, in the case of providing a service for displaying a red map information or a map information on a blue, delayed road (or slow road), and red information on a congested road by applying a road congestion situation to a map or map, There is also.

In order to display the real-time traffic information and the pattern information on the terminal (i.e., terminal of the navigation system) as described above, the communication-based terminal periodically transmits the current speed and sign information of the vehicle (i.e., (That is, the center of the navigation system), and the center processes data (i.e., real-time traffic information related data) transmitted from the terminal into a form that can be displayed on the terminal and transmits the processed data to the terminal.

However, current terminals (i.e., terminals of a navigation system) provide average traffic information on the entire road, but do not provide real-time traffic information by car line. Therefore, even in the case of a vehicle traveling on the same road, there is a problem that a situation other than real-time traffic information may occur depending on the lane.

The background art of the present invention is disclosed in Korean Registered Patent No. 10-0838798 (registered on June, 10, 2008, a method and system for providing route information based on real-time traffic information, and a mobile communication terminal therefor).

According to an aspect of the present invention, there is provided a traffic information providing system, which is created to solve the above-described problems, and can measure traffic information of a lane and a surrounding lane on which the vehicle is traveling, The present invention provides a traffic information analysis apparatus and method.

According to an aspect of the present invention, there is provided an apparatus for analyzing traffic information by traffic light, comprising: an image input unit for photographing a lane and a surrounding lane on which a vehicle is traveling; A communication unit that communicates with an electronic control unit of the vehicle to acquire the position and running information of the vehicle from a sensor mounted on the vehicle; And calculating a relative distance between the vehicle itself and each preceding vehicle by analyzing an image photographed at a predetermined time interval through the image input unit and calculating a difference speed for each of the plurality of vehicles by using the relative distance and the imaging time interval And a control unit for collecting the traffic information including the traffic information and transmitting the traffic information to the traffic information control center.

The present invention further includes a wireless communication unit for providing the traffic information to the traffic information control center and for receiving the traffic information classified by the traffic information center from the traffic information control center and outputting the traffic information according to traffic information .

In the present invention, in order to calculate the lane departure speed, the control unit analyzes the previously photographed image and the photographed image in the photographed image at the predetermined time interval, When the same vehicle is traveling in the same lane after checking whether the vehicle is a vehicle, the speed calculation for each vehicle is performed.

In the present invention, the control unit recognizes at least one of the color, size, shape, and vehicle number of each preceding car in the image photographed at the predetermined time interval, Is checked.

In the present invention, in order to calculate the speed for each traffic lane, the control unit sets the measurement time interval to n seconds, the moving distance for n seconds of the vehicle equipped with the traffic information analyzing apparatus for each traffic line to A, (C- (BA)) * 3,600) / 1,000 when the distance measured by the preceding vehicle is B, the distance by which the preceding vehicle travels for n seconds, and the speed of the preceding vehicle by D, And the speed D of the motor.

According to another aspect of the present invention, there is provided a traffic information analysis method for a traffic lane, comprising the steps of: capturing a lane and a surrounding lane in which the vehicle travels at predetermined time intervals through a video input unit; The control unit communicating with the electronic control unit of the vehicle through the communication unit to acquire the position and running information of the vehicle from the sensor mounted on the vehicle; Calculating a relative distance between the vehicle itself and each preceding vehicle by analyzing an image photographed at a predetermined time interval through the image input unit by the control unit; Calculating a speed for each of the plurality of cars by using the relative distance and the photographing time interval of each calculated preceding vehicle; And the control unit collects the traffic information including the calculated speed difference for each traffic line and transmits the traffic information to the traffic information control center.

In the present invention, in order to calculate the lane departure speed, the controller analyzes the previously photographed image and the photographed image in the photographed image at the predetermined time interval, And when the same vehicle travels in the same lane, it performs the calculation of the speed of each traffic lane.

In the present invention, in order to check whether the vehicle traveling in the corresponding lane is the same vehicle, the control unit displays the color, size, shape, and vehicle number of each preceding vehicle in the image photographed at the pre- And recognizes at least one or more of them.

In the present invention, in order to calculate the speed for each traffic lane, the control unit sets the measurement time interval to n seconds, the moving distance for n seconds of the vehicle equipped with the traffic information analyzing apparatus for each line to A, (C- (BA)) * 3,600) / 1,000 when the distance measured by the preceding vehicle is B, the distance by which the preceding vehicle travels for n seconds, and the speed of the preceding vehicle by D, And the speed D of the motor.

According to an aspect of the present invention, traffic information of a lane and a surrounding lane on which the vehicle is traveling can be measured and reflected in a real-time traffic information providing service by traffic line.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a schematic configuration of a traffic information traffic analyzing apparatus according to an embodiment of the present invention; FIG.
FIG. 2 to FIG. 3 are diagrams for explaining a method of calculating traffic information for each traffic line in FIG. 1; FIG.
FIG. 4 to FIG. 5 are diagrams for explaining a method of calculating the traffic information per line by the control unit in FIG. 1; FIG.
FIG. 6 to FIG. 7 are diagrams for explaining a method of calculating the traffic information for each line according to FIG. 1; FIG.
FIG. 8 is a flowchart illustrating a traffic information analysis method according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an apparatus and method for analyzing lane-by-lane traffic information according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a diagram illustrating a schematic configuration of a traffic information analyzing apparatus according to an exemplary embodiment of the present invention. Referring to FIG.

As shown in FIG. 1, the traffic information analysis apparatus 100 according to the present embodiment provides traffic information by traffic information to the traffic information control center 200, (For example, a display unit of a navigation terminal) (not shown) to receive real-time traffic information by car.

The traffic information analysis apparatus 100 includes a wireless communication unit 110, an image input unit 120, a control unit 130, a data storage unit 140, a wired communication unit 150, and a position detection unit 160 .

The wireless communication unit 110 communicates with the traffic information control center 200 to provide or provide traffic information by traffic information.

For example, the wireless communication unit 110 may include a mobile communication modem (e.g., 3G, 4G, LTE, etc.), and may include a communication module for WiFi communication and a Bluetooth module for short-range wireless communication.

The image input unit 120 includes a camera module for photographing a preceding vehicle traveling in front of the vehicle.

The camera module may include a wide-angle lens (for example, 120 degrees or more) capable of capturing all of the lane and surrounding lane on which the vehicle is traveling as much as possible.

Further, although not specifically shown in the figure, it may further include a distance detection sensor (not shown) for measuring the distance (or interval) between the preceding vehicle and the subject vehicle in the own lane or the surrounding lane. That is, the operation of the camera module can be compensated by using the information detected through the distance detection sensor (not shown).

The wired communication unit 150 may communicate with at least one electronic control unit (ECU) in the vehicle.

For example, the wired communication unit 150 can perform communication with at least one of CAN, PWM, and UART.

The controller 130 communicates with the electronic control unit (ECU) of the vehicle through the wired communication unit 150 so that at least one sensor (e.g., a vehicle speed sensor, a laser sensor, an ultrasonic sensor, Sensor, etc.) can be used to measure the running speed of the vehicle, the steering angle, and the like.

The position detector 160 can confirm the position of the current vehicle (the own vehicle) using a Global Navigation Satellite System (GNSS) (satellite signal such as GPS) signal.

The controller 130 controls the speed of the lane on which the subject vehicle is traveling through the image input unit 120, the wired communication unit 150 and the position detector 160, Traffic information) and analyzes the speed of each traffic line (i.e., traffic information).

The data storage unit 140 stores the result obtained through the wireless communication unit 110, the image input unit 120, the wired communication unit 150, the position detection unit 150, and the control unit 130 Related data) in real time.

Hereinafter, a method for the controller 130 to calculate the car line speed (i.e., traffic information) will be described with reference to FIG. 2 to FIG.

FIGS. 2 to 3 are diagrams for explaining a method of calculating traffic information for each traffic line in FIG. 1 according to an exemplary embodiment of the present invention. For convenience of explanation, it is assumed that the current vehicle is traveling at a constant speed (for example, 36 km / h) in the two lanes of the one-way four-lane roads.

2, the controller 130 photographs the lane on which the vehicle is traveling and the surrounding lanes on both sides through the camera module (not shown) of the image input unit 120 at predetermined time intervals. The control unit 130 recognizes the current vehicle speed and the moving direction (i.e., the driving direction) using the information detected through the wired communication unit 150 and the position detecting unit 160.

The control unit 130 analyzes the images photographed through the camera module and obtains each of the 'measurement start point' and the 'measurement end point' of the vehicle that travels in each lane for a predetermined time (n seconds as a time interval of the shooting interval) And stores the calculated distance in the data storage unit 140. [0033] FIG.

For example, the controller 130 may measure the distance traveled by the preceding vehicle in the lane on which the vehicle is traveling for n seconds, and then, based on the measured distance, (I.e., a relative distance) can be calculated in a proportional manner. When the difference distance is calculated as described above, it can be calculated by dividing the distance by the time (for example, n seconds).

For example, when the measurement time interval is n seconds, the moving distance of the subject vehicle equipped with the traffic information analysis apparatus 100 according to the present embodiment for n seconds is A, the existing measurement distance of the preceding vehicle (i.e., 0 D = ((C- (BA)) * 3,600 where B is the distance traveled by the preceding vehicle, n is the distance traveled by the preceding vehicle, and D is the speed of the preceding vehicle. ) / 1,000.

It should be noted that the speed calculation method is described only for the sake of easy understanding of the explanation and is not necessarily limited to the speed calculation method.

For reference, it is preferable that the lane departure speed calculation method according to the present embodiment is applied to a straight road, and it is preferable to apply the present invention when the vehicle traveling in the lane is the same vehicle while calculating the lane departure speed. For this, the controller 130 may recognize at least one of the color, size, shape, and vehicle number of the preceding vehicle photographed through the camera module, and determine whether the vehicle is the same.

3, the control unit 130 detects traffic information (e.g., moving speed, moving direction, and coordinate information) for each traffic line and transmits the traffic information to the traffic information control center 200. [

Accordingly, the traffic information control center 200 collects the traffic information for each traffic line of the corresponding road received from the traffic information analyzing apparatus 100 according to the present embodiment to calculate average traffic information for each traffic line of the corresponding road And provides it to terminals of each vehicle (for example, in-vehicle navigation, traffic information confirmation program, smartphone navigation, etc.).

FIGS. 4 to 5 are diagrams for explaining a method of calculating traffic information for each line in FIG. 1 according to another embodiment of the present invention.

For convenience of explanation, it is assumed that the current vehicle is traveling at a constant speed (for example, 36 km / h) in the two lanes of the one-way four-lane roads. However, it is assumed that the existing measured distance (i.e., the measured distance in the 0 second step) B of each preceding vehicle selected and the distance C in which the preceding vehicle has moved for n seconds are different as shown in FIG. 5 do.

Accordingly, when calculating the speed D for each car with the speed calculation method described with reference to Fig. 2, the speed of one lane is 18 km / h, that of the second lane is 54 km / h, that of the third lane is 122.4 km / / h. < / RTI >

6 to 7 are diagrams for explaining a method of calculating the traffic information per line in the control unit of FIG. 1. The basic assumption is the same as that shown in FIGS. 4 to 5, It is possible to measure the moving direction and the moving speed of the surrounding vehicle even if the subject vehicle is not parked while it is parked.

In the same manner as described above, it is assumed in Figs. 6 to 7 that the current vehicle is currently parked on the shoulder of the one-way four-lane road. Therefore, the moving distance A of the subject vehicle for n seconds becomes 0 m, and the existing measured distance (i.e., the measured distance in the 0-second step) B of each preceding vehicle It is assumed that a distance C is different as shown in Fig.

Accordingly, when calculating the speed D for each of the lanes according to the speed calculation method described with reference to Fig. 2, the first lane is 21.6km / h, the second lane is 32.4km / h, the third lane is 32.4km / h, Is calculated as 36 km / h. That is, the traffic information (e.g., moving speed, moving direction, and coordinate information) of the surrounding lane is detected even when the subject vehicle equipped with the traffic information analyzing apparatus 100 according to the present embodiment is parked on the shoulder, To the information control center 200.

FIG. 8 is a flowchart illustrating a traffic information analysis method according to an embodiment of the present invention.

8, when the vehicle is traveling on a straight road (YES in S101), the controller 130 controls the lane on which the vehicle is traveling using the camera module, (For example, n seconds) (S102).

In addition, the controller 130 communicates with an in-vehicle electronic control unit (ECU) to recognize the current speed and moving direction of the vehicle (i.e., the driving direction) (S103).

Also, the controller 130 analyzes the image photographed before (for example, 0 second) and the image photographed after (for example, n seconds later) to check whether the vehicle being driven is the same vehicle in the corresponding lane (S104) .

For example, the control unit 130 recognizes at least one of the color, size, shape, and vehicle number of each preceding car photographed through the camera module, and recognizes at least one of the vehicles It is possible to judge whether or not the vehicle is the same as in the image photographed before (i.e., 0 second).

If the same vehicle is traveling in the same lane according to the result of the check (S104) (YES in S104), a speed calculation process for each of the different lanes is performed (S105). If the vehicle traveling in the same lane is a vehicle (No in S104), the speed calculation for the corresponding lane is not performed (S106).

For example, the control unit 130 analyzes images photographed at intervals of n seconds to calculate the speed of each line, and calculates a distance relative to the preceding vehicle in each line (e.g., the distance to the preceding vehicle in the lane on which the vehicle is traveling The relative distance to the preceding vehicle in the other lane) is calculated. At this time, the distances to the preceding vehicles for each car are merely for calculating the car sorting speed, and there may be a certain amount of error due to the differences in the photographing angles, so it is not necessary to calculate absolute distances.

As described above, when the measurement time interval is n seconds, the moving distance for n seconds of the own vehicle equipped with the traffic information traffic analyzing apparatus 100 according to the present embodiment is A, Let D = ((C-1) / 2) where B is the measurement distance (ie, the measurement distance in the 0 second step), C is the distance traveled by the preceding vehicle for n seconds, and D is the speed of the preceding vehicle. (BA) * 3,600) / 1,000.

In addition, the controller 130 collects the traffic information including the traffic-by-traffic speed and transmits the traffic information to the traffic information control center 200 (S107).

Accordingly, the traffic information control center 200 can provide the real-time traffic information service for each car of the road by integrating traffic information for each car.

As described above, the present embodiment has the effect of measuring the traffic information of the lane and the surrounding lane on which the vehicle is traveling, and reflecting the measured traffic information to the traffic information providing service for each traffic line. Accordingly, it is possible not only to recommend a road with a high traffic flow, but also to recommend a lane with a high traffic flow on the road, thereby improving the user's convenience.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.

100: traffic discriminating traffic information analyzing apparatus 110:
120: image input unit 130:
140: Data storage unit 150: Wired communication unit
160: Position detection unit 200: Traffic information control center

Claims (9)

An image input unit for photographing a lane on which the vehicle is traveling and a surrounding lane;
A communication unit that communicates with an electronic control unit of the vehicle to acquire the position and running information of the vehicle from a sensor mounted on the vehicle; And
A relative distance between the vehicle itself and each preceding vehicle is calculated by analyzing the image photographed at a predetermined time interval through the image input unit, and the relative driving speed is calculated using the relative distance and the imaging time interval And a control unit for collecting the traffic information including the traffic information and transmitting the traffic information to the traffic information control center.
The method according to claim 1,
To provide the traffic information to the traffic information control center,
And a wireless communication unit for receiving the traffic information classified by traffic information from the traffic information control center and outputting the traffic information according to traffic information.
The apparatus of claim 1,
In order to calculate the vehicle speed, it is necessary to analyze a previously photographed image and a photographed image in the photographed image at the predetermined time intervals to check whether the vehicle is in the same lane or not, And when the vehicle is traveling in the same lane, calculating the speed of each traffic lane.
The apparatus of claim 3,
Recognizing at least one of a color, a size, a shape, and a vehicle number of each preceding vehicle in the image photographed at the pre-designated time intervals, and checking whether the vehicle being driven in the corresponding lane is the same vehicle Selective traffic information analyzer.
The apparatus of claim 1,
In order to calculate each car sorting speed, it is assumed that a measurement time interval is n seconds, a movement distance for n seconds of the vehicle equipped with the traffic information analyzing device for each line is A, a measurement distance at the measurement start stage of the preceding vehicle is B, n (C- (BA)) * 3,600) / 1,000 when the distance traveled by the preceding vehicle is C and the speed of the preceding vehicle is D, the speed D of each preceding vehicle is calculated Traffic information analyzing device by car.
Photographing a lane and a surrounding lane on which the vehicle travels at predetermined time intervals via the image input unit;
The control unit communicating with the electronic control unit of the vehicle through the communication unit to acquire the position and running information of the vehicle from the sensor mounted on the vehicle;
Calculating a relative distance between the vehicle itself and each preceding vehicle by analyzing an image photographed at a predetermined time interval through the image input unit by the control unit;
Calculating a speed for each of the plurality of cars by using the relative distance and the photographing time interval of each calculated preceding vehicle; And
And the control unit collects the traffic information including the computed traffic line speeds and transmits the traffic information to the traffic information control center.
7. The method of claim 6, further comprising:
The control unit analyzes the previously photographed image and the photographed image in the image photographed at the predetermined time interval to check whether the same vehicle is in the driving lane of the lane and then the same vehicle runs in the same lane Wherein the step of calculating the speed of each of the plurality of traffic information is performed.
8. The method of claim 7,
In order to check whether the vehicle traveling in the corresponding lane is the same vehicle,
Wherein the controller recognizes at least one of a color, a size, a shape, and a vehicle number of each preceding vehicle in the image photographed at the predetermined time interval.
7. The method of claim 6, further comprising:
The control unit sets the moving distance for n seconds of the vehicle on which the traffic information analyzing apparatus for each traffic lane is set to A, the traveling distance for the preceding vehicle to be measured to be B, n seconds, (D) of each preceding vehicle is calculated by ((C- (BA)) * 3,600) / 1,000, where C is a distance and D is the speed of the preceding vehicle Information analysis method.

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