WO2016017860A1

WO2016017860A1 - Method for generating traffic information reflecting change in traffic flow

Info

Publication number: WO2016017860A1
Application number: PCT/KR2014/010709
Authority: WO
Inventors: 이효윤
Original assignee: 현대엠엔소프트 주식회사
Priority date: 2014-07-31
Filing date: 2014-11-07
Publication date: 2016-02-04
Also published as: KR20160017162A; KR102197195B1

Abstract

The present invention relates to a method for displaying traffic information related to a road on which a vehicle is traveling by using a navigation system, and to a method for generating traffic information reflecting a change in traffic flow so as to display real-time traffic information and change progress information on traffic flow from a previous time point to a current time point as time-based change information. A method for generating a traffic information summary map, according to the present invention, comprises the method for generating traffic information reflecting a change in traffic flow, in a navigation system displaying road traffic information including speed, the method for generating traffic information comprising the steps of: deriving first traffic flow information from a first time point to a second time point for each link; deriving second traffic flow information from the second time point to a current time point for each link; deriving a mean speed for each link from the first traffic flow information and the second traffic flow information; deriving traffic flow change progress information from the first traffic flow information and the second traffic flow information; and generating traffic information by combining the mean speed and the traffic flow change progress information for each link.

Description

Traffic Information Generation Method Reflecting Traffic Flow Change

The present invention relates to a method for displaying traffic information on a road running through a navigation, and not only real-time traffic information but also traffic for expressing change trend information of a traffic flow from a previous time to a current time as change information over time. The present invention relates to a traffic information generation method reflecting a change in flow.

Recently, navigation has become a necessity for drivers who drive a vehicle, and navigation functions are also diversified. Instead of simply specifying a destination and guiding a route to the destination, the navigation is automatically set by recording the user's driving type. In addition, various services have been made to increase user convenience by theme search, and various methods have been proposed to provide users with information on traffic flows changing in real time.

Conventional Republic of Korea Patent Publication No. 10-1061460 has been known about the method and apparatus for providing the prediction information on the road traffic conditions, and using the same, the prediction information on the traffic traffic is the prediction average speed or prediction of the section Transit time is provided, and in particular, statistics are used to generate future speed prediction information, and trend information on whether the current traffic condition is improving or deteriorating is expressed as the rate of change of the average speed for the section or the current for the section. We provide one of the four values of the average speed of faster, slower, and unchanged and unknown.

However, the prior art merely predicts the future speed information in accordance with the statistical traffic traffic pattern, and shows only the rate of change of the average speed as the trend information on whether the current traffic condition is improving or deteriorating. There is a problem in that there is a limit in the judgment of the user due to insufficient visual or visual.

The present invention devised to solve the problems of the prior art as described above has an object to express the change trend information of the traffic flow from the previous time to the current time in addition to the traffic information provided in real time as change information over time. .

In addition, in addition to the rate of change of the average speed according to each section, in the breakout section or the turning section, the traffic lane is divided into lanes and other affected lanes are provided as traffic information by expressing the change information over time for the affected lane and the other lanes. There is this.

The above object of the present invention is to display the road traffic information including the speed in the navigation, deriving the first traffic flow information from the first time point to the second time point for each link, the current at the second time point for each link Deriving second traffic flow information up to a point in time, deriving an average speed for each link from the first traffic flow information and the second traffic flow information, and changing traffic flow trend information from the first and second traffic flow information. It is achieved by a traffic information generation method reflecting a change in traffic flow, comprising the step of deriving and generating traffic information by combining average speed and traffic flow change trend information for each link.

Therefore, the present invention has an effect of helping the user's judgment intuitively and visually by displaying the change trend information of the traffic flow from the previous time to the current time as the change information over time in addition to the traffic information provided in real time. .

In addition, by segmenting lanes and displaying lane-affected and non-affected lanes as change information over time to guide recommended lanes, the traffic situation is a summary map that is aggregated information on some major roads. And there is another effect to check through the traffic congestion information on the road network and to select a smooth flow path by the user's convenience.

1 is a flowchart illustrating a traffic information generating method reflecting a change in traffic flow according to an embodiment of the present invention;

2 is a generation criteria and display example of traffic information reflecting a change in traffic flow according to an embodiment of the present invention;

3 is a traffic information display example reflecting a change in traffic flow generated for a case of partial congestion due to an accident situation according to an embodiment of the present invention;

4 is a traffic information display example reflecting a change in traffic flows generated when a partial congestion occurs due to a left turn waiting vehicle according to an embodiment of the present invention;

5 is a traffic information display example reflecting a change in traffic flow generated for a route set by a user according to an exemplary embodiment of the present invention.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a traffic information generating method reflecting change information of a traffic flow according to an embodiment of the present invention. As shown in FIG. 1, after the navigation of the vehicle receives location information from the GPS, traffic flow information is received from the traffic information center. In the case of unidirectional communication, the traffic flow in the vehicle navigation using the received traffic flow information. Create change trend information and express it as traffic information. In the case of two-way communication, the traffic flow change trend information is received from the traffic information center and displayed as traffic information.

In detail, in the case of unidirectional communication, the traffic flow information is received from the traffic information center (S100). Each link is obtained from the traffic flow information from the first point to the second point in the past and the traffic flow information from the point in time to the present point in time. The first traffic flow information from the first time point to the second time point and the second traffic flow information from the previous point to the current point for each link are derived for each link (S110), and the first and second traffic flow information for each link. After deriving the average speed for each link from (S120), and deriving the traffic flow change trend information from the first and second traffic flow information thus obtained (S130), and finally, the average speed and traffic flow change for each link Combining trend information to generate and display traffic information reflecting the change in traffic flow (S300).

In this case, the first time point and the second time point mean past time points corresponding to the first reference time and the second reference time before the current time point, respectively, and the first reference time is larger than the second reference time. Has a value. That is, the first time point is a relatively past time point than the second time point.

In particular, in the case of unidirectional communication, traffic information reflecting a change in traffic flow is generated only for a path arbitrarily set by a user, and the traffic information generated in this way is stored in a storage unit of the navigation device.

Meanwhile, in the case of bidirectional communication, traffic flow information is received from the traffic information center (S200), and the navigation of the vehicle transmits the current location to the traffic information center (S210) to search for a route to a destination as well as a path arbitrarily set by the user. Received traffic flow change trend information from the traffic information center for the route (220) to express traffic information reflecting the change in traffic flow (S300).

At this time, the traffic information reflecting the change in the traffic flow generated and expressed as traffic information is expressed as Congestion and Travel Time for the road network on the map of the navigation device. It can be expressed in the form of a summary map of traffic information representing aggregate information on some major roads (highway, north riverside, etc.).

2 is an example of generating and displaying traffic information reflecting a change in traffic flow according to an exemplary embodiment. As shown in FIG. 2, the traffic flow change information is recorded by comparing the traffic flow information and the speed change immediately before the current traffic flow information. When comparing the speed change of the accumulated traffic flow information with a certain number of times based on the current point of time, it is determined that the traffic flow information may be changed, and it is classified by color and reflected in the traffic information. .

In the present embodiment, when the traffic condition is smooth, the first color is displayed, when the traffic condition is slow, the second color is displayed, and when the traffic condition is congested, the third color is displayed. To check the traffic conditions.

In particular, in FIGS. 3 to 5 to be described later, the case where the first color is white, the second color is gray, and the third color is black is taken as an example.

Traffic information reflecting the change in traffic flow is generated by combining the first display according to the average speed for each link and the second display according to the above-described traffic flow change trend information. The first and second displays are the average speed and the traffic flow. Colors should be displayed according to the change trend information.

For example, if the current traffic conditions are smooth for each link, and the speed decreases from the first time to the second time and the speed decreases from the second time to the current time, it is predicted that it is likely to change to a slow state in the future. Done.

Therefore, the first color, which represents the current smooth state, is displayed in the second color frame, indicating that there is a possibility of changing to a slow state in the future.

3 is a display example of traffic information reflecting a change in traffic flow generated when a partial congestion occurs due to a sudden situation according to an embodiment of the present invention, and FIG. 4 is a part due to a left turn waiting vehicle according to the present invention. This is an example of display of traffic information reflecting changes in traffic flows generated for cases of congestion.

As shown in FIG. 3 and FIG. 4, the first traffic flow information, the second traffic flow information, the average speed, and the traffic flow change trend information are respectively derived according to the lanes, and the traffic information generated according to the lanes is a sudden situation. In the case of partial congestion, the traffic information is generated by reflecting the adjustment factor so that the lane next to the main lane in which the sudden situation occurs has the average speed value lower than the average speed value of the smooth lane. Particular congestion occurs in a straight ahead lane by a vehicle waiting in a turning lane. In this case, traffic information is generated by reflecting an adjustment coefficient to be lower than an average speed value for the straight ahead lane.

If a car accident occurs, the existing traffic flow information is displayed only in red, but the traffic flow change trend information is expected to change from slow to congestion before passing through the section. Later, it is expected to change from congestion to slumber, with red to yellow borders.

When partial congestion occurs due to a left turn waiting vehicle, the existing traffic flow information is displayed in yellow because it is slow, but the traffic flow change trend information is likely to change from slow to congestion. For a straight section congested as a vehicle, when the vehicle passes through a slow section due to a left turn waiting vehicle, it indicates that communication is smooth.

5 is a traffic information display example reflecting a change in traffic flow generated for a route set by a user according to an exemplary embodiment of the present invention. As shown in FIG. 5, the first display indicating the average speed divides each link into two or more time units up to the current point in time and displays traffic flow information according to the time units. When Euljiro 5 sets the route as a route, the change in average speed according to the time from a certain time unit to the current time point is displayed in color for the section, so that the traffic information can be changed in a smooth direction. The route can be selected and used as a weight of the road network when navigating the route to guide a faster route.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

Claims

Deriving first traffic flow information from a past first time point to a second time point for each link;

Deriving second traffic flow information from the second time point to the current time point for each link;

Deriving an average speed for each link from the first traffic flow information and the second traffic flow information;

Deriving traffic flow change trend information for each link from the first traffic flow information and the second traffic flow information; And

And generating traffic information by combining the average speed and the traffic flow change trend information for each link.
According to claim 1,

The generating of the traffic information may include: in the navigation of the vehicle in the one-way communication, and in the traffic information center in the two-way communication.
The method of claim 2,

And when the navigation of the vehicle generates the traffic information, the navigation of the vehicle generates the traffic information only for a route preset by a user.
The method of claim 2,

When the traffic information center generates the traffic information, the navigation of the vehicle is generated by transmitting the current location to the traffic information center and combining the average speed of the link where the vehicle is located and the traffic flow change trend information. Traffic information generation method reflecting the change in traffic flow, characterized in that receiving the traffic information.
The method of claim 2,

And the first traffic flow information and the second traffic flow information are stored in a navigation storage unit of the vehicle or a storage unit of the traffic information center.
According to claim 1,

The first traffic flow information, the second traffic flow information, the average speed, and the traffic flow change trend information are respectively derived according to the lanes included in each link. Way.
The method of claim 6,

In the step of generating the traffic information, when the traffic lanes are included in each link, the traffic information is generated by reflecting an adjustment coefficient in the traffic information of the next straight lane having the same driving direction as the rotation lane. Traffic Information Generation Method Reflecting Changes
The method of claim 6,

In the generating of the traffic information, when congestion occurs in some lanes included in each link, the traffic information is generated by reflecting an adjustment factor in the traffic information of the lane next to the congested lane. Traffic information generation method that reflects changes in flow.
According to claim 1,

The generating of the traffic information may include generating the traffic information by combining a first display according to the average speed for each link and a second display according to the traffic flow change trend information for each link. Traffic Information Generation Method Reflecting Changes
The method of claim 9,

The first display and the second display is a traffic information generation method reflecting a change in traffic flow, characterized in that the color is classified according to the average speed and the size of the traffic flow change trend information.
The method of claim 9,

The first display and the second display are for displaying the average speed and traffic flow change trend information in each time unit divided into two or more time units of a section from a previous time point to the current time point set for each link. Traffic information generation method that reflects changes in traffic flows.