KR102197199B1 - Method for creating tpeg information by calculating rotational speed at intersection - Google Patents

Abstract

Disclosed is a method of generating traffic information by calculating an intersection rotation travel speed. In more detail, it relates to a method of providing traffic information on the turn section to a vehicle by dividing the link corresponding to the turn section into one or more detailed links.
The method of generating traffic information by calculating the rotational travel speed of an intersection according to the present invention divides the link corresponding to the rotational section into one or more detailed links, and stores the traffic conditions in each section as big data according to the length of the detailed link. In addition, since it is possible to implement a display suitable for traffic conditions on the user terminal, detailed traffic information on the turn section can be provided to the vehicle.

Description

How to generate traffic information by calculating the traffic speed of intersections {METHOD FOR CREATING TPEG INFORMATION BY CALCULATING ROTATIONAL SPEED AT INTERSECTION}

The present invention relates to a method of generating traffic information by calculating a rotational travel speed at an intersection, and more particularly, a method of providing traffic information on a rotational section to a vehicle by dividing the link corresponding to the rotational section into one or more detailed links. It is about.

In general, a traffic information system refers to an urban area traffic information system that collects, processes, and distributes traffic information from street sections within a city. As drivers' demand for traffic information increases, provision of traffic information is important not only in terms of efficient management and operation of transportation means and transportation systems, such as efficient operation of transportation facilities and distribution of traffic demand, but also in terms of traffic demand management.

Traffic information service induces safe driving by allowing drivers to use traffic communication information or traffic-related knowledge in advance. That is, the traffic information service provides the driver with information on road congestion, construction, accidents, and control, so that a bypass road can be selected according to the traffic situation. Through this, the traffic information service can minimize direct and indirect loss costs by improving traffic communication according to the effect of dispersing traffic, reducing travel time by selecting the optimal route, and preventing accidents according to prior knowledge of dangerous situations such as accidents.

However, the currently provided traffic information is collected through detectors and CCTVs installed in some restricted areas, and is provided after some time through procedures such as analysis and input, so it cannot meet the traffic information needs of all citizens. There were some inadequate aspects to be used for management of unexpected situations such as traffic safety management, disasters, and disasters.

In order to solve the above problems, a traffic information system that provides real-time traffic information on a road has been proposed.

The traffic information system consists of a vehicle terminal-a base station-a center device. The vehicle terminal and the base station are wirelessly connected, so that even when the vehicle terminal mounted on the vehicle moves at high speed, it has a configuration capable of communicating with the base station.

If the center device provides real-time traffic information of the road through the base station to the vehicle terminal, the driver can travel on a road that is not congested, so that the driver can arrive at the destination faster. In addition, the vehicle terminal may select the fastest route in time from the route from the current vehicle location to the destination and recommend it to the driver.

Japanese Patent Application Laid-Open No. 2001-165681, which is a prior art, “navigation system” is disclosed. This navigation system is configured to send information of a departure point and a destination from a portable navigation terminal to a route search server, and to search and guide a route matching a search condition from data of a road network or a traffic network to the route search server. As a search condition, there is a means of transportation from a departure point to a destination, for example, a combination of foot, car, railroad, and foot, and the route is searched with this as one of the search conditions.

The route search server uses the road (route) of the map data as a node, the location of the nodule point and the bending point as a node, and the route connecting each node as a link, and provides cost information (distance or time required) of all links. It is provided as a database. In addition, the route search server sequentially searches for links from the origin node to the destination node by referring to the database, and carries the shortest route by making a guide route along the link and the node whose cost information of the link is minimal. You can inform the navigation terminal. As a method of such a route search, a method called a label determination method or a dijkstra method is used.

However, traffic information of a general road has only traffic information about the node of the map information and the link section between the nodes.

In particular, for one link, only one representative predicted transit time in the link section is presented. However, such traffic information on the road does not accurately reflect the traffic situation of the road.

1 is a conventional technique, since traffic information is calculated with only one representative predicted transit time in a straight link section centering on an intersection (A), there is a problem in that it is difficult to provide accurate traffic information for a turning section.

Accordingly, the present invention conceived to solve the above problems provides a method of providing traffic information on the turn section by dividing the link corresponding to the turn section into one or more detailed links.

In order to achieve the above object, the present invention provides a method of generating traffic information by calculating an intersection rotation travel speed. This is the first step of calculating and storing the travel speed of the rotating section in the server using the driving data of the rotating vehicle among the driving paths, the second step of receiving the route set departure and destination from the user terminal, and the third step of searching the route. Step, a fourth step of determining whether there is a turn path on the searched path, and for the vehicle for which the turn path is set at the intersection, the server transmits traffic information for the turn section according to the travel speed calculation to the vehicle. It consists of a fifth step of providing, and the fifth step is characterized in that the traffic information is provided to the vehicle by dividing the rotating link corresponding to the rotating section into one or more detailed links.

The driving data may be big data on GPS location information, speed, and rotation information when the vehicle travels through the intersection.

Each of the detailed links is divided into smooth, slow and congested according to the rotational travel speed, and the congestion is a travel speed of a first set value, the slow travel is a travel speed of a second set value, and the smooth is a third set. It includes a travel speed greater than or equal to the value, and increases in size in the order of the first, second and third set values.

It characterized in that the rotating link is formed into a detailed link by dividing the rotation link according to the first, second and third set values.

The rotation link is characterized in that the link combines the entry and exit links during rotation.

The big data is characterized in that it is classified and stored according to the day and time when the travel speed of the rotation section of the intersection is slow or congested.

The first step is characterized in that the traffic information is generated using driving data collected from a vehicle that has traveled the rotation link for a recent predetermined time.

The big data is characterized in that the traffic information is generated by assigning a weight to the length of the detailed link according to the traffic conditions of the entry and exit links in the rotation section.

A weight is assigned so that the length of the detailed link of the exit point increases in the order of congestion, slow speed, and smooth traffic condition of the exit link based on the exit point of the rotating link.

It characterized in that it further comprises the step of displaying the traffic information on the terminal after the fifth step.

The method of generating traffic information by calculating the rotational travel speed of an intersection according to the present invention divides the link corresponding to the rotational section into one or more detailed links, and stores the traffic conditions in each section as big data according to the length of the detailed link. In addition, since it is possible to implement a display suitable for traffic conditions on the user terminal, detailed traffic information on the turn section can be provided to the vehicle.

1 is a diagram showing traffic information with only one representative predicted transit time in a link section going straight around an intersection as a prior art;
FIG. 2 is a flowchart illustrating a method of providing traffic information for a rotation section to a vehicle by dividing a link corresponding to a rotation section of the present invention into one or more detailed links;
FIG. 3 is a diagram for providing traffic information on a rotation section to a vehicle by dividing a link corresponding to the rotation section of the present invention into one or more detailed links;
4 is a diagram showing a reference travel speed at an intersection of the present invention.

The terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

Referring to FIG. 2, a flow chart for a method of providing traffic information on a turn section to a vehicle by dividing a link corresponding to a turn section into one or more detailed links is shown.

This is the first step (S100) of calculating and storing the travel speed of the rotating section in the server using the driving data of the rotating vehicle among the driving routes, the second step (S200) of receiving the route set origin and destination from the user terminal, and the route. In the third step (S300) of searching for, the fourth step (S400) of determining whether there is a turn path on the searched path, and the vehicle for which the turn path is set at the intersection, traffic for the turning section according to the calculation of the travel speed in the server It consists of a fifth step (S500) of providing information to the vehicle, and the fifth step is characterized in that the rotating link corresponding to the rotating section is divided into one or more detailed links, and traffic information is provided to the vehicle.

The driving data may include big data on GPS information, speed, and rotation information when a vehicle travels at an intersection. Driving data may be previously stored in the server because traffic information must be provided in real time when the user searches for a route. At this time, it is possible to collect data about GPS location information, speed, and rotation information such as a left or right turn of a vehicle passing through a rotation section around an intersection to convert it into big data.

In general, the navigation speed calculation method includes a starting point/destination setting step for setting a starting point and a destination, a starting time candidate setting step for setting a plurality of starting time candidates, and a route between map data and starting point and destination for each departure time candidate. The travel time calculation step is performed to obtain the travel time of each of the route construction links by using statistical data of collection conditions corresponding to a situation at the time of passage of each of the route construction links constituting a.

Further, a route specifying step for specifying a route between the origin and the destination may be further performed, and the travel time calculation step may be performed to obtain a travel time of a specific route in the route specifying step. It is also possible to further perform a route search step of searching a route between the origin and the destination. In addition, in the travel time calculation step, the travel time of the route searched in the path search step may be obtained.

However, traffic information of general roads has only the traffic information on the link section between the node of the map information and the node, and only one representative predicted transit time in the link section is presented for a link. However, such traffic information on the road does not accurately reflect the traffic situation of the road.

Therefore, there is a problem in that it is difficult to provide accurate traffic information for a turning section because traffic information is calculated with only one representative estimated transit time in a straight link section around the intersection.

Referring to FIG. 3, traffic information may be displayed by dividing a rotation link corresponding to a rotation section into one or more detailed links. This is different from the method of generating traffic information using the speed calculation of the entry link and the exit link, which are conventional straight links.

Each of the detailed links is divided into smooth, slow and congested according to the rotational travel speed, and congestion is the travel speed of the first set value, slow travel is the travel speed of the second set value, and smooth is the travel speed of more than the third set value. And the size of the first, second, and third set values gradually increases.For example, the first set value may be any one of 0 to 5 km/h, and the second set value is 5 to 15 km/h. It may be any one and the third set value may be 15 km/h or more, but the range of the set speed value may be differently set according to the traffic condition (see FIG. 4).

In addition, the links may be classified according to the first, second, and third setting values to form detailed links, and the length of each of the detailed links may be determined according to a travel speed in a rotation section. For example, the first setting value indicates the speed of the congestion section, and the length of the detailed link may be shorter than the detailed link corresponding to the second setting value or the third setting value. That is, traffic information can be generated by adjusting the length of the detailed link according to the travel speed in the rotation section.

Therefore, in the present invention, since traffic information is not generated by calculating average speed values from nodes that are the entry and exit points of the entry link and the exit link, the rotating link in the rotating section may be a link combining the entry and exit links. have. That is, if the entry and exit links are combined at an intersection, traffic information of the rotating section can be generated by dividing the combined rotating link into detailed links and calculating the travel speed for each section.

The big data may be stored according to the day and time when the travel speed of the rotation section of the intersection is slow or congested. For example, at a Gangnam Station intersection around 8 o'clock, which is an hour of commute on Monday, the traffic conditions for left and right turns in a specific direction are almost daily congested or slow, so big data can be formed based on this information.

In addition, the big data may generate traffic information by weighting the length of the detailed link according to the traffic conditions of the entry link and the exit link in the rotation section. This weighting is because big data is mainly an average value. Big data mainly collects traffic information that is congested or slower in the turn section on average. Therefore, in order to obtain traffic information in a turning section within a range outside the average, another method of calculating the travel speed is required. In this case, traffic information for the detailed link of the rotating link may be generated through the traffic conditions of the entry link and the exit link. That is, a weight may be given so that the length of the detailed link of the exit point increases in the order of congestion, slow movement, and smoothness in the traffic condition of the exit link based on the exit point of the rotating link. Therefore, even if the traffic information for going straight at the intersection is smooth, more accurate traffic information can be generated by calculating the travel speed between the entry link and the exit link in the case of congestion or slow driving for the turn section, and is divided into detailed links. Various colors can be displayed on the user's terminal. For example, in the rotating section, the detail link of the congested section is short and red, and the slower section is longer than the congested section and is yellow, and in the smooth section, the length of the detailed link is displayed as long as green. It can be.

In addition, if the user wants to receive real-time traffic information, the driving data collected from the vehicle driving the rotating link for a predetermined time before the time when the request for traffic information from the user terminal is received together with the traffic information received from big data After generating the traffic information by using the traffic information on the rotating link can be provided. Since big data includes traffic information close to an average value, it is necessary to provide driving information of a vehicle that has traveled a relatively recent turn to a more urgent user. For example, when a user requests real-time traffic information by setting a route, the server collects the data of the vehicle that has traveled within one hour from the time the request is received, rather than big data, generates traffic information and provides it to the user. can do.

In addition, when traffic information is generated from the server after the fifth step, the step of displaying the traffic information on the terminal may be further included.

Claims (10)

In the method of generating traffic information by calculating the intersection rotation travel speed:
A first step of calculating and storing a travel speed of a rotating section in a server using driving data of a rotating vehicle among driving routes;
A second step of receiving a route-set source and destination from a user terminal;
A third step of searching for the route;
A fourth step of determining whether there is a rotation path on the searched path; And
Consisting of a fifth step of providing the vehicle with traffic information for the rotation section according to the calculation of the travel speed in the server for the vehicle for which the rotation route is set at the intersection,
In the fifth step, the traffic information is provided to the vehicle by dividing the rotation link corresponding to the rotation section into one or more detailed links,
The driving data is big data on GPS location information, speed, and rotation information when the vehicle travels through the intersection,
The big data is characterized in that the traffic information is generated by adding a weight to the length of the detailed link according to the traffic conditions of the entry link and the exit link in the rotation section. How to generate.
delete The method of claim 1,
Each of the detailed links is divided into smooth, slow and congested according to the rotational travel speed,
The congestion is a traveling speed of a first set value, the slow traveling is a traveling speed of a second set value, and the smoothness includes a traveling speed equal to or greater than a third set value,
The method of generating traffic information by calculating an intersection rotational travel speed, characterized in that the size gradually increases in the order of the first, second and third set values.
The method of claim 3,
The method of generating traffic information by calculating the rotational travel speed of an intersection, characterized in that the rotational links are classified according to the first, second and third set values to form detailed links.
The method of claim 1,
The rotating link is a method for generating traffic information by calculating an intersection rotational travel speed, characterized in that the link is a link that combines the entry link and the exit link at the time of rotation.
The method of claim 1,
The big data is a method for generating traffic information by calculating the traffic information by calculating the rotational travel speed of an intersection, characterized in that the traffic information is stored according to the day and time when the traffic speed of the rotation section of the intersection is slow or congested.
The method of claim 1,
The first step is characterized in that the traffic information is generated using driving data collected from a vehicle traveling on the rotating link for a predetermined time prior to a time when the request for the traffic information is received from the user terminal. A method of generating traffic information by calculating the traffic speed of the intersection.
delete The method of claim 1,
Intersection rotation travel speed, characterized in that the weight is given so that the length of the detailed link of the exit point increases in the order of congestion, slow movement, and smoothness in the traffic condition of the exit link based on the exit point of the rotation link. How to generate traffic information by calculating.
The method of claim 1,
And displaying the traffic information on the terminal after the fifth step. The method of generating traffic information by calculating an intersection rotation travel speed.

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