KR20070091468A - Method for serving navigation suing real-time traffic - Google Patents

Abstract

A navigation method using real-time traffic information is provided to prevent time loss caused by an unwanted link search by setting a path on a predetermined range with respect to a vehicle position. Traffic information between departure and arrival positions is referenced based on initial traffic information, such that an initial path is guided(S101-S107). When the traffic information is received in the course of the guidance, the traffic information is extracted in a predetermined range with respect to a vehicle. Then, whether the traffic information is changed is determined(S109-S113). When the traffic information is changed, a path is re-set based on a research on the predetermined range(S115). A path change is determined according to a comparison between the initial path and the re-set path(S117-S119).

Description

Vehicle navigation service method using real-time traffic information {method for serving navigation suing real-time traffic}

1 is a view showing an example of a vehicle navigation system to which the present invention is applied

2 is a view showing a vehicle navigation service method using real-time traffic information according to the present invention

Explanation of symbols for main parts of the drawings

110: GPS receiver 120: communication unit

140: map database (DB) 150: control unit

170: display unit 180: memory

The present invention relates to a vehicle navigation service method using real-time traffic information, and more particularly, real-time traffic information to provide a high-quality route to the driver by making a more practical and reasonable route reflecting the real-time traffic situation of the road in which the vehicle is in progress. It relates to a vehicle navigation service method using.

As the form of wireless mobile communication service is gradually diversified, wireless mobile communication and location tracking system are combined with automobiles. Especially, the vehicle navigation system that provides real-time traffic information and guides traffic information service, and the remote that informs the presence of vehicle abnormalities. There is a growing interest in telematics services, which are intended to integrate vehicle diagnostics and additional information services that provide various information services and vehicle location tracking using GPS.

The telematics system is provided in a vehicle and provides various computing functions as well as functions as a terminal for receiving various information, and a location-based information service that detects vehicle location from a control center (information center) and informs surrounding information, and a car. Remote vehicle diagnosis service that checks and controls the vehicle status by connecting the electronic control device of the vehicle, the vehicle diagnostic equipment, and the terminal to the control center, and provides a navigation service that provides traffic information to the desired destination of the driver. It will be included.

Looking at the navigation service in detail, it determines the optimal route from the starting point to the destination at the request of the user and provides the result to the user.

To this end, the navigation server (information center) determines the route using the departure and destination information of the navigation vehicle and the current traffic information at the time of departure.

However, when conducting route guidance from the departure point to the arrival point using the traffic information at the departure point, the traffic information after the lapse of the driving time cannot be considered, and therefore, the dynamic route guidance cannot be performed. The disadvantage is that the accuracy of the estimated arrival time is poor.

In order to make up for this drawback, the conventionally proposed method uses a method of inducing a change and periodically planning a route while driving using updated traffic information such as an accident and weather.

That is, the route planning of the driving vehicle is performed by using the updated traffic information at each request point by manual triggering of the client or automatic triggering of the server for each node.

However, the navigation service method according to the prior art has the following problems.

First, there is a problem that unnecessary re-search occurs frequently because the traffic information is periodically received according to the information transmission cycle of the traffic information center, the search is performed by reflecting the traffic information over the entire section, and the route is planned.

Secondly, since it reflects traffic information of a place (for example, near a destination) irrelevant to the current position of the vehicle, there is a disadvantage in that a good search result cannot be expected.

Therefore, the present invention has been made to solve the above problems, the vehicle navigation using real-time traffic information to provide a high-quality route to the driver by making a more practical and reasonable route reflecting the real-time traffic situation of the road in which the vehicle is in progress The purpose is to provide a service method.

Another object of the present invention is to provide a navigation service method for a vehicle using real-time traffic information to provide a good route by reflecting the traffic information only for a predetermined radius of the vehicle location to perform the route planning.

Still another object of the present invention is to search only traffic information of a predetermined radius where the vehicle is located, perform route re-search only when the traffic information is changed, and apply a new route only when the previous route is different from the re-searched route. To provide a vehicle navigation service method using real-time traffic information to inform the driver to change the route.

A feature of a vehicle navigation service method using real-time traffic information according to the present invention for achieving the above object is the first to receive the first traffic information and to set and guide the initial route by reflecting the traffic information in the departure point and destination route Steps; If the traffic information is received during the route guidance, extracting only traffic information within a vehicle radius and confirming whether to change it; A third step of re-searching only traffic information within the vehicle radius and resetting the route when the traffic information within the vehicle radius is changed; And a fourth step of comparing the initial path with the reset path and determining a path change based on whether the path is the same.

The vehicle navigation service method using real-time traffic information according to the present invention is configured to include differently setting the vehicle radius according to a city and a city.

The vehicle navigation service method using real-time traffic information according to the present invention is configured to include an audio and visual notification of a new route application and to change the route when the initial search route and the reset route are different.

Other objects, features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, a preferred embodiment of a vehicle navigation service method using real-time traffic information according to the present invention will be described.

1 is a view showing the configuration of a vehicle navigation system to which the present invention is applied, and includes a GPS receiver 110, a communication unit 120, an input unit 130, a map database (DB) 140, and a controller 150. ), A display controller 160, a display unit 170, a memory 180, a voice output unit 190, and a speaker 191.

The GPS receiver 110 receives the position information transmitted from the GPS satellites and the traveling speed of the vehicle, and includes the GPS antenna and the like, and receives the position information such as the position and angle and the traveling speed information of the vehicle from the GPS satellites.

The communication unit 120 is connected to a network communication network to receive traffic information transmitted from the traffic information center.

The input unit 130 is a touch screen and a keypad for generating a user manipulation signal according to a user's manipulation, and may be generally configured as a keypad device such as a keyboard for user manipulation. It is configured to be linked with the in-display device.

The map database (DB) 140 outputs map information of the stored road network.

The controller 150 controls the overall operation of the vehicle navigation system, sets a path reflecting the received traffic information, and extracts and searches only traffic information within a vehicle radius from periodically received traffic information. The traffic information within the vehicle radius is re-searched to set the re-search route, and the user is notified of the new route application and the route is changed only when the re-search route is compared with the previous set route.

The display controller 160 controls a path display, an information display, and the like under the control of the controller 150.

The display unit 170 displays a starting point, a destination, a current route indication, traffic information, etc. under the control of the display control unit 160.

The memory 180 stores application programs used in the navigation system and received traffic information.

The voice output unit 190 outputs a new path application as a voice through the speaker 191.

2 is a flowchart illustrating a navigation service method using real-time traffic information according to the present invention, the first step of receiving an initial traffic information and searching for traffic information within a predetermined radius of a vehicle location to set an initial route and guide the route ( S101 to S107); When the traffic information is received during the route guidance, extracting only traffic information within the radius of the vehicle and checking whether the traffic information has been changed (S109 to S113); A third step (S115) of re-searching only traffic information within the vehicle radius and resetting the route when the traffic information within the vehicle radius is changed; And a fourth step (S117 ˜ S119) for comparing the initial search path with the reset path and determining a path change based on the same.

The navigation service method using real time traffic information according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, when the user who drives the navigation system inputs a starting point and a destination through the input unit 130, the controller 150 receives the current location information, the vehicle speed information, and the like through the GPS receiver 110, and at step S101. After receiving the traffic information through the communication unit 120 as described above, the map information is extracted from the map database 140 by reflecting the traffic information on the starting point and the destination section in step S103 to set the route for the starting point and the destination.

The map information on the starting point and the destination route thus set is displayed on the display unit 170 under the control of the display control unit 160.

That is, initially, the traffic information is received, and the route for the starting point and the purpose is set by reflecting the entire traffic information about the starting point and the destination.

When the initial route setting is completed, the controller 150 performs route guidance according to the initial route set in step S107 and while checking the traffic information continuously as in step S109 during route guidance. do.

Here, the traffic information transmits real-time traffic information at regular time intervals (for example, every 7 minutes) at the traffic information center.

As a result of checking in step S109, if real-time traffic information is not received, guidance is performed according to a previously set route. In contrast, when traffic information is received, an appropriate radius (for example, from where the vehicle is located, as in step S111) Only traffic information within 3km of city and 10km of suburbs is extracted.

Thereafter, in step S113, it is checked whether the traffic information within the vehicle radius is changed. When the traffic information within the vehicle radius is not changed, the route guidance is performed while maintaining the currently set route.

That is, the traffic information reflected when initially setting the route for the starting point and the destination is compared with the traffic information of the corresponding section and the traffic information within the currently received vehicle radius so that the previously set route is maintained as it is. do.

On the contrary, when the traffic information is changed, as in step S115, only the traffic information within the radius of the vehicle is reflected and re-searched to reset the search path (re-search path). Here, the re-search path means only a path within a vehicle radius.

Subsequently, in step S117, the initial set route (previous route) and the reset rescan route are compared, and in the same case, the route guidance is received until the next traffic information is received while maintaining the set route without changing the route. Will be performed.

On the contrary, if the minimum initial path and the reset re-search path are different, the driver (user) sends a voice through the voice output unit 190 and the speaker 191 to apply the new path by moving to step S119. Make it easy to recognize that the path has changed.

Here, the user may be notified that the path is changed through a buzzer or another alarm sound in addition to the voice. Alternatively, the user may easily recognize the path change by displaying data about the path change on the display unit 170.

In addition, when notifying the user of the route change and at the same time changing only the route within the vehicle radius, the process moves to step S107 and performs route guidance using the changed route.

Here, conventionally, when traffic information is received, the traffic information for all sections is searched and the route is reset regardless of the current vehicle location, so the search for unnecessary sections is performed and time loss occurs due to the route setting. The present invention reflects only traffic information within a radius of the vehicle and determines a route by re-searching only when the traffic information is changed. Therefore, compared to the prior art, time loss and unnecessary operation performed due to searching for an unnecessary section are performed. There is an advantage that can be prevented.

As described above, the navigation service method using the real-time traffic information according to the present invention has an effect of providing a high-quality route to the driver by making a more practical and reasonable route by reflecting only the real-time traffic situation of the road where the vehicle is in progress.

In addition, by periodically searching only the traffic information within the radius of the vehicle to perform a re-search for the corresponding section only when the traffic information is changed, and compare the re-search path obtained by the re-search with the previous path and change the path only when different from the conventional route, Likewise, if only traffic information is received, it is possible to rescan unconditionally and solve all problems caused by the method of changing the route.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims and their equivalents.

Claims (4)

In a method of performing a navigation service using real-time traffic information, A first step of receiving initial traffic information and setting and guiding an initial route by reflecting traffic information in a departure point and a destination section; If the traffic information is received during the route guidance, extracting only traffic information within a vehicle radius and confirming whether to change it; A third step of re-searching only traffic information within the vehicle radius and resetting the route when the traffic information within the vehicle radius is changed; And a fourth step of comparing the initial route with the reset route and determining a route change based on the same. The method of claim 1, The vehicle radius of the second step and the third step of the navigation service method using real-time traffic information, characterized in that the distance is set according to the city and the long distance. The method of claim 1, The fourth step is a navigation service method using real-time traffic information comprising the step of notifying the user audio-visually to the application of the new route when the initial route and the reset route is different, and changing the route. The method of claim 1, Receiving the traffic information of the second step is a navigation service method using real-time traffic information, characterized in that receiving at regular time intervals.

Images