KR20180014345A - Apparatus for providing traffic information and method thereof - Google Patents

Abstract

The present invention relates to a traffic information providing apparatus capable of providing accurate traffic information and improving satisfaction of route search, and a method thereof. The traffic information providing apparatus comprises: a speed information generation part generating speed information at each point in a link; a speed information storage part storing a speed at each point generated by the speed information generation part; and a traffic information providing section generation part generating a traffic information providing section based on the speed change amount at each link point stored in the speed information storage part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a traffic information providing apparatus,

The present invention relates to a traffic information providing apparatus and method, and more particularly, to a traffic information providing apparatus and method that provide traffic information based on a changing vehicle speed in a single link.

Generally, a navigation system of a vehicle is a road traffic guidance device that displays a current position of a vehicle, a shortest distance to a destination, and the like using a satellite or an in-vehicle sensor.

The navigation system includes a global positioning system (GPS) that displays geographical information necessary for road driving and road management on the screen on the basis of the topographic map, a gyro sensor mounted inside the vehicle, The traveling direction and the travel distance are measured and displayed on the screen.

Accordingly, the navigation system guides the traffic information and the route to the destination for each road, thereby minimizing the operation cost and time and preventing the concentration of the traffic on the limited road, thereby maximizing the distribution of the vehicle.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2016-0049691 (May 2016.05.10) 'Traffic Information Providing Apparatus and Method'.

Generally, a traffic information collection link having a relatively long length, such as a highway, varies depending on a point even if the variation of the traffic information is the same.

Conventionally, a single link is calculated by calculating a transit time to provide one traffic information per link, or traffic information is calculated by a predetermined distance unit within a single link to provide traffic information.

However, the former method has a problem in that one traffic information is provided to a single link, so that it is not possible to reflect a change in speed within a long link by a point.

In addition, the latter method generates traffic information on the basis of a certain distance unit, which causes an error.

It is an object of the present invention to provide a method and apparatus for generating and providing traffic information based on vehicle speed changes within a single link to provide accurate traffic information within a single link The present invention provides a traffic information providing apparatus and method in a single link.

According to an aspect of the present invention, there is provided a traffic information providing apparatus comprising: a speed information generating unit for generating speed information at each point in a link; A speed information storage unit for storing a speed at each point generated by the speed information generation unit; And a traffic information provision section for generating a traffic information provision section based on a speed change amount at each link point stored in the speed information storage section.

In the present invention, the traffic information providing section generating section may include a point speed detecting section for detecting a speed at each point from the speed information storing section; And a section detector for detecting the traffic information providing section based on a speed change amount at each point with respect to a predetermined set speed.

In the present invention, the set speed is a speed at the time of link entry.

In the present invention, the set speed is a speed at a previous point.

In the present invention, the section detector detects a point at which the speed change amount with respect to the set speed is equal to or greater than a set value, and connects the detected point to detect the traffic information providing section.

The present invention further includes a traffic information providing unit for selectively generating and providing traffic information according to whether the traffic information providing section is generated by the traffic information providing section generating unit.

In the present invention, the traffic information providing unit may include a distance calculating unit for calculating a distance from a current position of the vehicle to a start point and an end point of the traffic information providing period, respectively; And a traffic information generating unit for generating the traffic information using the distance to the start point, the distance to the end point, the traffic situation, and the link information calculated by the distance calculating unit.

According to an aspect of the present invention, there is provided a traffic information providing method including: generating a speed information of each point in a link by a service server; The service server storing speed information of each point; Generating a traffic information providing section based on a speed change amount at each point of the service server; And selectively generating and providing traffic information according to whether the service server generates the traffic information providing section.

In the present invention, the service server detects the speed at each point and detects the traffic information providing section based on the speed change amount at each point with respect to the predetermined set speed.

In the present invention, the set speed is a speed at the time of link entry.

In the present invention, the set speed is a speed at a previous point.

In the present invention, the service server detects a point at which the speed change amount with respect to the set speed is equal to or greater than a set value, and connects the detected point to detect the traffic information providing section.

In the present invention, the service server generates the traffic information using a distance to a start point of the traffic information providing section, a distance to an end point, a traffic situation, and link information.

The apparatus and method for providing traffic information according to an aspect of the present invention can generate and provide traffic information based on a change in vehicle speed within a single link to provide accurate traffic information and improve the satisfaction of route search even within a single link .

The traffic information providing apparatus and method according to an aspect of the present invention can reduce the packet usage rate at the time of providing data by generating traffic information only for a section where the speed change is relatively large even in a single link.

1 is a block diagram of a traffic information providing apparatus according to an embodiment of the present invention.
2 is a block diagram of a vehicle terminal according to an embodiment of the present invention.
3 is a block diagram of a service server according to an embodiment of the present invention.
4 is a block diagram of a traffic information provision section generating unit according to an embodiment of the present invention.
5 is a diagram illustrating a method of detecting a congestion period according to a change in vehicle speed in a link according to an exemplary embodiment of the present invention.
6 is a block diagram of a traffic information providing unit according to an embodiment of the present invention.
7 is a flowchart of a traffic information providing method according to an embodiment of the present invention.

Hereinafter, an apparatus and method for providing traffic information according to an embodiment of the present invention will be described in detail 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. Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the user, the intention or custom of the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a block diagram of a traffic information providing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of a vehicle terminal according to an embodiment of the present invention. FIG. 4 is a block diagram of a traffic information providing section generating unit according to an embodiment of the present invention. FIG. 5 is a block diagram of a traffic information providing section according to an embodiment of the present invention. FIG. 6 is a block diagram of a traffic information providing unit according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 1, a traffic information providing apparatus according to an embodiment of the present invention includes a vehicle terminal 10 and a service server 20.

The vehicle terminal 10 is installed in each vehicle and transmits the locus information of the vehicle to the service server 20 through the communication network.

When the vehicle terminal 10 receives the traffic information from the service server 20, the vehicle terminal 10 displays the corresponding traffic information so that the occupant can recognize the traffic information on the link.

The vehicle terminal 10 may be a navigation terminal mounted in a vehicle and displaying road information to a specific destination or road information of a presently located area on the screen in accordance with an operation of a driver of the vehicle or a smart terminal A terminal or the like may be employed.

The service server 20 performs map matching with the locus information received from the vehicle terminal 10 to generate and store speed information at each point in the link and generates a traffic information providing section based on the speed change amount at each point do.

In this case, the service server 20 detects the traffic information providing section based on the speed change amount at each point with respect to the predetermined set speed.

The set speed may be the speed at the time of link entry or the speed at the previous point.

That is, the service server 20 detects the speed at each point in a single link, detects a point where the rate of change of the point is greater than a set value, and connects the points to generate a traffic information providing section. The point can be set in real time according to the vehicle speed etc. in the link

Here, the set value is a reference range for judging the magnitude of the speed change amount at each point. Therefore, when the speed at a certain point is out of the set value about the set speed, the vehicle speed at the corresponding point is greatly decreased or increased compared to the set speed.

On the other hand, when the traffic information providing section is generated, the service server 20 generates traffic information using the distance from the vehicle to the start point of the traffic information providing section, the distance to the end point, the traffic situation and the link information, And transmits the information to the vehicle terminal 10.

In particular, the service server 20 generates and provides the traffic information selectively only when the traffic information providing section is generated, that is, when the speed change amount is relatively long, as described above, And it is possible to improve the satisfaction of the route search.

2, the vehicle terminal 10 includes a position detection unit 11, a communication unit 12, an output unit 13, and a control unit 14.

The position detection unit 11 detects the current position of the vehicle. Here, the position detector 11 may be a Global Positioning System (GPS) receiver. The GPS receiver receives a signal transmitted from three or more GPS satellites through an antenna, and then detects a current position based on the received signal.

The output unit 13 displays the road information to the destination or the road information of the presently located area on the screen and also displays the traffic information received from the service server 20 on the screen.

The communication unit 12 transfers the sign information inputted from the control unit 14 to the service server 20 through the communication network and receives the traffic information from the service server 20 via the communication network and inputs the information to the control unit 14. [

The control unit 14 generates the locus information based on the position information of the vehicle detected by the position detection unit 11. [ The locus information can be generated every preset time. The control unit 14 generates sign information for each cycle and transmits the generated sign information to the service server 20 through the communication unit 12.

The locus information is information on the locus of movement collected during the set time. The locus information may include road coordinates, velocity per section, altitude coordinates, and the like.

The control unit 14 receives the traffic information from the service server 20 through the communication unit 12 and outputs the received traffic information through the output unit 13.

In this case, the traffic information is provided based on the change in the vehicle speed within a single link, so that the occupant can accurately recognize the traffic situation ahead of a single link and improve the satisfaction of the route search.

In addition, the service server 20 generates traffic information only for a period in which a speed change is dynamically performed in a single link, thereby reducing a packet usage rate when providing data.

3, the service server 20 includes a speed information generating unit 21, a speed information storing unit 22, a traffic information providing period generating unit 23, and a traffic information providing unit 24.

The speed information generation unit 21 determines whether the trajectory information is a trajectory existing in the pre-stored traffic information collection map when receiving the trajectory information from the vehicle through the communication network. If the trajectory information is a trajectory existing in the traffic information collection map, the trajectory information is map-matched to the link ID and the speed information of the traffic information collection map to generate speed information in the corresponding section.

The speed information storage unit 22 stores the speed at each point in the link generated by the speed information generation unit 21. [ In this case, the velocity information storage unit 22 stores angular velocities at all points including the in-link interpolation point.

The traffic information providing section 23 generates a traffic information providing section based on the speed change amount at each point stored in the speed information storing section 22. [

Referring to FIG. 4, the traffic information provision section generation section 23 includes a point speed detection section 231 and a section detection section 232.

The point velocity detection section 231 detects velocity at each point stored in the velocity information storage section 22.

The section detecting section 232 detects the traffic information providing section based on the speed change amount at each point with respect to the predetermined set speed. Here, the set speed may be either the vehicle speed at the time of link entry or the speed at the previous point.

That is, the section detecting section 232 determines whether the speed change amount with respect to the set speed detected by the point speed detecting section 231 is equal to or greater than the set value, and if the speed change amount with respect to the set speed is equal to or greater than the set value .

In this case, if there is a point at which the speed change amount with respect to the set speed is equal to or greater than the set value, the section detecting unit 232 connects the points to generate a traffic information providing section.

Referring to FIG. 5, the interval detector 232 determines whether the rate of change with respect to the set velocity is greater than or equal to a preset value for each point (p1 to p16) of the links from the n1 node to the n2 node. As a result of the determination, if the point where the speed change amount with respect to the set speed is equal to or greater than the set value is a point from p7 to p12, a traffic information providing section having p7 as the start point and p12 as the end point can be created.

On the other hand, the section detector 232 does not generate the traffic information providing section if there is no point in the link corresponding to the set speed that is greater than the set value.

The traffic information providing unit 24 generates a traffic information providing period based on the speed change amount at each point stored in the speed information storing unit 22. [

The traffic information providing unit 24 includes a distance calculating unit 241 and a traffic information generating unit 242 as shown in FIG.

The distance calculating unit 241 calculates the distance from the current position of the vehicle to the start point and the end point of each point of the traffic information providing section.

The traffic information generating unit 242 generates traffic information using the distance to the start point, the distance to the end point, the traffic situation, and the link information calculated by the distance calculating unit 241, and transmits the generated traffic information to the communication network To the vehicle terminal (10).

Here, the traffic information providing unit 24 generates traffic information based on the traffic information providing period as described above. If the traffic information providing section 23 does not generate the traffic information providing section, the traffic information providing section 24 does not provide the traffic information to the vehicle terminal 10.

As described above, the traffic information providing unit 24 generates and provides the traffic information only when the speed change amount at each point in the single link is equal to or less than the set value and the speed change amount is not less than the set value. The packet usage rate can be reduced.

Hereinafter, a traffic information providing method according to an embodiment of the present invention will be described with reference to FIG.

7 is a flowchart of a traffic information providing method according to an embodiment of the present invention.

Referring to FIG. 7, the speed information generation unit 21 of the service server 20 first receives the locus information from the vehicle terminal 10 (S10).

In this case, the control unit 14 of the vehicle terminal 10 detects the position information of the vehicle from the position detecting unit 11, and obtains the locus information such as the road coordinates, the speed per section, and the altitude coordinates based on the detected vehicle position information And transmits the created locus information to the service server 20 through the communication unit 12. [

On the other hand, when the sign information is received from the vehicle terminal 10 through the communication network, the speed information generator 21 determines whether the sign information is a trajectory existing in the previously stored traffic information collection map, If the trajectory exists in the information collection map, map information is mapped to the link ID and the speed information of the traffic information collection map to generate the speed information in the corresponding section (S20).

The speed information storage unit 22 stores the speed at each point in the link generated by the speed information generation unit 21 (S30).

As the velocity at each point is stored by the velocity information storage unit 22, the traffic information provision section generation unit 23 generates a traffic information provision period according to whether the velocity change amount is equal to or larger than a set value at each point S40).

That is, the traffic information providing section generating section 23 detects the speed information at each point from the speed information storing section 22, and judges whether or not the speed change amount with respect to the set speed is greater than or equal to the set value Check whether there is a point where the speed change amount to the set speed is equal to or higher than the set value.

In this case, the traffic information providing section generating section 23 creates a traffic information providing section by connecting these points to a point where the speed change amount with respect to the set speed is equal to or higher than the set value among the plurality of points.

On the other hand, the traffic information providing section generating section 23 does not generate the traffic information providing section if there is no point where the speed change amount with respect to the set speed is equal to or higher than the set value among the points in the link.

The traffic information providing unit 24 generates traffic information according to whether a traffic information providing section is generated by the traffic information providing section generating unit 23 in operation S50.

In this case, when a traffic information providing section is generated by the traffic information providing section generating section 23, the traffic information providing section 24 sets the distance from the current position of the vehicle to the starting point and the ending point of the traffic information providing section, And generates traffic information using the distance to the start point, the distance to the end point, the traffic situation, and the link information.

The traffic information providing unit 24 transmits the generated traffic information to the vehicle terminal 10 through the communication network and the control unit 14 of the vehicle terminal 10 transmits the traffic information from the communication unit 12 And provides it through the output unit 13 (S60).

For example, the control unit 14 can provide traffic information in a form such as "congestion up to 60 m from the front 24 m" through the output unit 13.

Meanwhile, the traffic information providing unit 24 does not generate the traffic information nor provide it to the vehicle terminal 10 unless the traffic information providing section 23 generates the traffic information providing section.

That is, the traffic information providing unit 24 selectively generates traffic information according to whether a traffic information providing section is generated by the traffic information providing section generating unit 23 and provides the generated traffic information to the vehicle terminal 10, The packet usage rate can be reduced.

As described above, the traffic information providing apparatus and method according to an embodiment of the present invention generate and provide traffic information based on a change in vehicle speed within a single link, thereby providing accurate traffic information within a single link and improving the satisfaction of route search .

In addition, the traffic information providing apparatus and method according to an embodiment of the present invention can reduce the packet usage rate at the time of providing data by generating traffic information only for a section in which the speed change is relatively large even in a single link.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: vehicle terminal
11:
12:
13: Output section
14:
20: service server
21: Speed information generator
22: Speed information storage unit
23: Traffic information providing section generating section
231: Branch point speed detection section
232:
24: Traffic Information Offering
241:
242: traffic information generating unit

Claims (13)

A speed information generation unit that generates speed information at each point in the link;
A speed information storage unit for storing a speed at each point generated by the speed information generation unit; And
And a traffic information providing section for generating a traffic information providing section based on a speed change amount at each link point stored in the speed information storing section.
The method of claim 1, wherein the traffic information providing section generating section
A point velocity detector for detecting velocity at each point from the velocity information storage; And
And a section detector for detecting the traffic information providing section based on a speed change amount at each point with respect to a predetermined set speed.
3. The traffic information providing apparatus according to claim 2, wherein the set speed is a speed at the time of link entry.
3. The traffic information providing apparatus of claim 2, wherein the set speed is a speed at a previous point.
3. The traffic information providing apparatus of claim 2, wherein the section detecting unit detects a point at which the speed change amount with respect to the set speed is equal to or greater than a set value and connects the detected point to detect the traffic information providing section.
The traffic information providing apparatus according to claim 1, further comprising a traffic information providing unit for selectively generating and providing traffic information according to whether the traffic information providing section is generated by the traffic information providing section creating unit, .
The method of claim 6, wherein the traffic information providing unit
A distance calculating unit for calculating a distance from a current position of the vehicle to a start point and an end point of the traffic information providing section; And
And a traffic information generating unit for generating the traffic information using the distance to the start point, the distance to the end point, the traffic situation, and the link information calculated by the distance calculating unit.
The service server generating speed information of each point in the link;
The service server storing speed information of each point;
Generating a traffic information providing section based on a speed change amount at each point of the service server; And
And selectively generating and providing traffic information according to whether the service server generates the traffic information provision section.
9. The method of claim 8, wherein the service server
Detecting a speed at each point and detecting the traffic information providing section based on a speed change amount at each point with respect to a predetermined set speed.
10. The method according to claim 9, wherein the set speed is a speed at the time of link entry.
10. The method according to claim 9, wherein the set speed is a speed at a previous point.
10. The method as claimed in claim 9, wherein the service server detects a point at which a speed change amount with respect to the set speed is equal to or greater than a set value and connects the detected point to detect the traffic information providing section.
The method of claim 8, wherein the service server generates the traffic information using a distance to a start point of the traffic information providing section, a distance to an end point, a traffic situation, and link information.

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