KR20070099754A - Method for navigating path of 2-pass formed and system for executing the method - Google Patents

Abstract

A method for searching a route having a 2-pass scheme and a system for executing the same are provided to generate route guidance information by using grid and road information related to departure and arrival positions. A system for searching a route having a 2-pass scheme includes a position inputting unit(101), an information extracting unit(102), a route generating unit(103) and a route guidance generating unit(104). The position inputting unit receives departure and arrival positions. The information extracting unit extracts grid and road information related to the departure and arrival positions from a route search database. The route generating unit generates multi routes based on the grid and road information. The route guidance generating unit generates route guidance information using the multi routes according to a predetermined route selection condition.

Description

2-path path searching method and system for performing the method {METHOD FOR NAVIGATING PATH OF 2-PASS FORMED AND SYSTEM FOR EXECUTING THE METHOD}

1 is a block diagram illustrating a configuration of a 2-PASS path search system according to an embodiment of the present invention.

2 is a flowchart illustrating a 2-PASS path searching method according to another embodiment of the present invention.

3 is a diagram illustrating an example of dividing geographic data into a grid according to the present invention.

4 is a diagram illustrating an example of a route search database according to the present invention.

5 is a diagram illustrating an example of generating a route using grid information and road information according to the present invention.

<Explanation of symbols for main parts of the drawings>

100: 2-PASS route search system

101: point input unit

102: information extraction unit

103: path generation unit

104: route guidance information generation unit

105: grid division

106: road data collection unit

107: Path Navigation Database

108: weight setting unit

109: route re-search section

The present invention generates an approximate multi-path for the starting point and the destination using grid information and road information associated with the starting point and the destination, and optimizes the route guidance information based on the predetermined route selection criteria. The present invention relates to a 2-PASS path searching method and system.

The navigation system is a system that provides route information for driving a vehicle such as a vehicle using a satellite and is also called an automatic navigation system. The current navigation system not only provides a navigation function for guiding a route but also provides various functions such as wireless Internet, video, and call function.

Such a navigation system searches for a path using a path search algorithm, and causes various problems by determining a path according to a weight of a road when determining a final path. For example, the navigation system may set weights for roads in order of highways, urban highways, motor vehicles, national roads, and local roads, but a path determined according to the weights may not match the actual reality.

For example, an entirely different route to a destination can be explored in the same area, even though the starting point is only a few hundred meters apart. In this case, if the user intentionally leaves the path in order to use a path other than the searched path, there is a problem that the path is repeatedly regenerated to the existing path without recognizing the alternative path. In addition, there is a problem that the road network database is so large that the time for route search increases exponentially. In addition, since the map data is continuously changed, there is a need to set weights on the road every time the map data is changed.

As such, the navigation system does not provide accurate route information according to the current location of the vehicle.

The present invention has been made to solve the problems of the prior art as described above, generating at least one multi-path using the grid information and road information associated with the starting point and destination, and guides one route from the multi-path By providing and generating information, it provides a 2-PASS route search method and system that can generate the same route guidance information in the multi-path in the case of going from the place belonging to the grid of the starting point to the destination. The purpose.

In addition, the 2-PASS path searching method and system according to the present invention generates an approximate multipath (1st-path), and generates path guidance information (2nd-path) according to the path selection criteria among the multipaths. By doing so, it is possible to generate a route in two steps, and thus its purpose is to generate a plurality of routes at once.

In addition, the 2-PASS route search method and system according to the present invention, when the vehicle deviates from the route during the route guidance based on the route guidance information, grasp the current position of the vehicle in advance in the multi-path previously generated The purpose of the present invention is to search for a new route different from the route guidance information and to generate and provide route guidance information associated with the new route, thereby reducing the time without repeatedly performing the route re-search.

In addition, the 2-PASS route search method and system according to the present invention is to create a plurality of multi-path through the connection relationship between the road data belonging to the grid associated with the starting point and destination.

In order to achieve the above object and solve the above-mentioned problems of the prior art, a point input unit for receiving a starting point and a destination according to an embodiment of the present invention, road information associated with the starting point and the destination from a predetermined route search database And an information extraction unit for extracting grid information and grid information, a path generation unit for generating multiple paths based on the grid information and the road information, and route guidance information using the multiple paths according to a predetermined path selection criterion. Characterized in that it comprises a route guide information generation unit for generating a.

In addition, the 2-PASS route search method according to another embodiment of the present invention, the step of receiving the starting point and destination, the road information and grid information associated with the starting point and the destination from a predetermined route search database Extracting, generating a multi-path based on the grid information and the road information, and generating route guidance information using the multi-path according to a predetermined route selection criterion. .

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a block diagram illustrating a configuration of a 2-PASS path search system according to an embodiment of the present invention.

The 2-PASS route search system 100 (hereinafter referred to as a "route search system") includes a point input unit 101 which receives a starting point and a destination, and road information associated with the starting point and the destination from a predetermined route search database 107. And an information extraction unit 102 for extracting grid and grid information, a path generation unit 103 for generating a multi-path based on the grid information and the road information, and the multi-path in accordance with a predetermined path selection criterion. It includes a route guide information generation unit 104 for generating route guide information using.

According to an embodiment of the present invention, the route search system 100 divides the geographic data into a grid having a predetermined size in order to construct the route search database 107 and each road included in the geographic data. It further includes a road data collector 106 for collecting road data associated with the. The route search system 100 records the road information to which the road data belongs to the grid and the grid information regarding the grid to which the road data belongs to the route search database 107.

According to another embodiment of the present invention, the route search system 100 further includes a weight setting unit 108 for setting the weight for each road data, and the route guidance information generation unit 104 includes the road among the multi-paths. One path guide information is generated according to the weight of each data.

According to another embodiment of the present invention, when the vehicle deviates from the route during the route guidance based on the route guidance information, the route search system 100 determines the current position of the vehicle and guides the route among the multiple routes. The apparatus further includes a route rescanning unit 109 for searching for a new route different from the information. In this case, the route guide information generation unit 104 generates route guide information associated with the new route.

2 is a flowchart illustrating a 2-PASS path searching method according to another embodiment of the present invention.

In step S201, the grid dividing unit 105 of the route search system 100 divides the geographic data into a grid having a predetermined size, and the road data collecting unit 106 stores each road included in the geographic data. Collect road data associated with the.

A description with reference to FIG. 3 is as follows. 3 is a diagram illustrating an example of dividing geographic data into a grid according to the present invention.

As shown, the route search system 100 divides geographic data into regions of 10Km in length and width, and collectively divides the divided regions into grids. The geographic data refers to map data capable of providing a route and may be, for example, map data associated with “Korea,” “Seoul,” and the like. The grid refers to a grid, and the path search system 100 may determine the shape and size of the grid in a form that is easy to manage geographic data in a square or a rectangle. The illustrated geographic data is map data associated with "South Korea" and is divided into grids of 10 km in length and width.

In addition, the road data is data including at least one of a highway, an urban highway, an automobile road, a national road, and a local road. One or more road data may pass through one grid, and the route search system 100 may generate road information by collecting road data passing through the grid.

As described above, in the conventional art, when a path is generated, a path is directly generated from the geographic data. However, in the present invention, by generating an approximate multi-path using the grid, a plurality of multi-paths can be generated at a time as more road data belonging to the grid. There is an advantage.

In step S202, the route search system 100 maintains in the route search database 107 road information about road data belonging to the grid and grid information about the grid to which the road data belongs.

A description with reference to FIG. 4 is as follows. 4 is a diagram illustrating an example of a route search database according to the present invention.

According to an embodiment of the present invention, the route search database 107 associates and records road data in a grid. As shown by reference numeral 401, road data of Route 1 and Local Road 701 pass through the first grid, and road data of Local Road 701 pass through the second grid. Therefore, the route search system 100 may generate road data belonging to each grid as road information.

In addition, according to another embodiment of the present invention, the route search database 107 may associate and record a grid with road data. As shown at 402, the road data "Highway 1" belongs to grids 13, 98, and 164, and the road data "Highway 10" is assigned to grids 1051, 1052, and 1053. Belongs. Therefore, the path search system 100 may generate a grid to which each road data belongs.

In step S203, the point input unit 101 of the route search system 100 receives a starting point and a destination. The route search system 100 may receive the starting point and the destination from a user through a predetermined input means.

In step S204, the information extraction unit 102 of the route search system 100 extracts grid information and road information associated with the starting point and the destination from the route search database 107. According to an embodiment of the present invention, the information extracting unit 102 extracts grid information about the grid to which the departure point belongs, and extracts road information associated with the grid information. For example, when the starting point belongs to the first grid, the grid information on the starting point is the first grid, and when the road data passing through the first grid is National Route 45 and the local road 305, the road associated with the grid information. The information is on Route 45 and Local Route 305.

Similarly, the information extraction unit 102 extracts grid information to which the destination belongs and road information associated with the grid information.

In step S205, the path generation unit 103 of the path search system 100 generates a multi-path (1st-path) using the extracted grid information and the road information. According to an embodiment of the present invention, the route generation unit 103 may extract adjacent grid information from the starting point to the destination and generate the multi-path using the connection relationship between the road information associated with the grid information. have.

For example, there may be shared road information between adjacent grid information, and based on this shared road information, the multi-path from the starting point to the destination may be generated. For example, a grid to which the departure point belongs is a twenty-third grid, and road data such as highway 10, a local road 301, and the like passes through the twenty-third grid, and highways 10 and twenty-two grids adjacent to the twenty-third grid are respectively highway 10. When the line, the local road 302, the highway 10 and the national highway 1 pass, "highway 10" becomes shared road data. In this case, the route search system 100 may generate the multi-path to the starting point and the destination using the "highway line 10".

Alternatively, the multi-path may be generated using a connection relationship between road information associated with grid information from the starting point to the destination. Road data belonging to adjacent grid information because the road data are classified into highways, urban highways, automobile roads, national roads, and local roads, but the urban highways, automobile roads, national roads, and local roads that meet each highway exist. The multipath may be generated in consideration of a connection relationship between the two.

For example, Highway 1 has a point where National Highway 3, Highway 61 and National Highway 46 meet. In this case, the multi-path may be generated using a connection relationship between the highway 1, the national highway 3, the highway 61, and the national highway 46.

In addition, when the geographic data is divided into a grid of 1 km, the same route may be provided when driving to the same destination from a place where the starting point is only a few hundred meters different as in the prior art. Therefore, as the distance dividing the grid increases, the same route may be provided for the same destination even if the starting point is slightly different.

For example, when "Seoul Gangnam-gu Nonhyeon-dong" (first departure point) and "Seoul Gangnam-gu Sinsa-dong" (second departure point) are divided into the same grid, according to the present invention, "Jipup-dong, Ilsan-gu, Gyeonggi-do" (destination destination) The route information going to) and the route information going from the second starting point to the destination are the same.

According to another embodiment of the present invention, the information extraction unit 102 extracts road data passing through the grid to which the departure point belongs, and extracts road data passing through the grid to which the destination belongs, and identifies matching road data.

For example, the information extraction unit 102 extracts the road data "Route 47" and "Route 43" that the starting point belongs to the 100th grid and passes through the 100th grid, and the destination belongs to the 1020 grid. Then, the road data passing through the 1020 grid "National Route 43", "National Route 6" is extracted. The route information generator 103 may generate a multi-path between the starting point and the destination by using the matched "Route 43".

In step S206, the route guide information generator 104 of the route search system 100 generates route guide information 2nd-path using the multi-path according to a predetermined route selection criterion. The route guidance information may be generated using road information, grid information, and guidance information associated with the starting point and the destination among the multi-paths. The route guidance information may include a node (point) for each location of geographic data, a name belonging to the node, image data associated with the node and the name, text data, and voice data. The route guide information generation unit 104 may generate the route guide information using each of these data.

The path search system 100 generates an approximate multipath (1st-path) in step S205, and generates path guide information 2nd-path according to the path selection criteria among the multipaths in step S206. By doing so, a path can be generated in two steps, and thus, there is an advantage in that a plurality of paths can be generated at one time.

According to the exemplary embodiment of the present invention, the weight setting unit 108 of the route search system 100 sets weights for each road data, and for example, weights in the order of highways, urban highways, automobile exclusive roads, national roads, and provincial roads. Can be set. In this case, the route guide information generation unit 104 generates the route guide information by setting the weight for each road data among the multiple routes as the route selection criteria.

According to another exemplary embodiment of the present invention, the route guide information generation unit 104 sets the route guide information by setting a route, a total distance, a size of a lane, a number of times of changing lanes, or the like as the route selection criteria. Can be generated. For example, the route information setting unit 108 may generate and provide route guide information associated with a route having a short total distance, a route having a large lane size, or a route changing less of a highway.

According to another embodiment of the present invention, the route guidance information generation unit 104 provides all of the multi-paths to the user, receives one route from the user, and generates route guidance information associated with the selected route. Can be.

Accordingly, the user may be provided with route guidance based on the route guidance information from the route search system 100, and if the vehicle deviates from the route during the route guidance, the route rescanning of the route search system 100 is performed. The unit 109 may detect a current position of the vehicle and search for a new route different from the route guidance information in the multi-path. In this case, the route guide information generation unit 104 generates route guide information associated with the new route.

Therefore, according to the present invention, even if the vehicle leaves the route during the route guidance, by generating and providing new route guidance information among the multi-paths generated in advance, it is possible to reduce the time without repeatedly performing the route re-search. have.

5 is a diagram illustrating an example of generating a route using grid information and road information according to the present invention.

Referring to the drawings, the starting point is "Seoul Station", the destination is "Gangnam-gu Office", the grid associated with the starting point is the 102nd grid, and the grid associated with the destination is the 125th grid. The route search system 100 may extract road data belonging to the 102nd grid and the 125th grid, and generate multipaths (red, blue, and purple) in consideration of the connection relationship between the extracted road data. have.

The path search system 100 uses the 102nd grid and the 125th grid to generate a first path (red) via the 102nd, 112th, 122th, 123th, 124th, 133th and 125th grids. Can be generated. Alternatively, the path search system 100 may generate a second path (blue) via the 102nd, 112th, 113th, 114th, 124th and 125th grids using the 102nd grid and the 125th grid. can do. Also, the path search system 100 generates a third path (purple) via the 102nd, 112th, 113th, 123th, 124th, and 125th grids using the 102nd grid and the 125th grid. can do.

The route search system 100 generates one route guide information according to the weight of each road data, the total distance, the size of the lane, and the driver's preference among the multi-paths (first, second, and third route information) generated as described above. Can be generated.

Alternatively, the route search system 100 may provide all of the first, second, and third routes to the user to select one route from the user, and generate route guidance information associated with the selected route.

According to an exemplary embodiment of the present disclosure, when the vehicle leaves the first route during the route guidance based on the first route, the route search system 100 may determine a current position of the vehicle to determine the second route or the first route. 3 may generate and provide new route guide information associated with the route. Alternatively, when the vehicle leaves the second route during the route guidance based on the second route, new route guide information associated with the first route or the third route may be generated and provided.

The 2-PASS path searching method according to the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

According to the 2-PASS route search method and system according to the present invention, at least one multi-path is generated using grid information and road information associated with a starting point and a destination, and one route guide information is selected from the multi-path. By generating and providing, the same route guide information may be generated in the multi-path when going from the place belonging to the grid of the starting point to the destination.

In addition, according to the path searching method and system of the 2-PASS method according to the present invention, generating a rough multipath (1st-path), the path guide information (2nd-path) according to the path selection criteria of the multi-path By generating, it is possible to generate a route in two steps, thereby generating a plurality of routes at a time.

In addition, according to the route search method and system of the 2-PASS method according to the present invention, when the vehicle deviates from the route during the route guidance based on the route guidance information, the current position of the vehicle is grasped and generated in advance in the previous step. By searching for a new route different from the route guidance information among the multi-paths and generating and providing route guidance information associated with the new route, it is possible to reduce the time without repeatedly performing the route re-search.

In addition, according to the 2-PASS route search method and system according to the present invention, a plurality of multi-paths can be generated through a connection relationship between road data belonging to a grid associated with a starting point and a destination.

Claims (20)

A point input unit for receiving a starting point and a destination; An information extraction unit for extracting road information and grid information associated with the starting point and the destination from a predetermined route search database; A path generation unit generating a multi-path based on the grid information and the road information; And Route guidance generation unit for generating route guidance information using the multi-path according to a predetermined route selection criteria 2-PASS path search system comprising a. The method of claim 1, The 2-PASS route search system includes a grid partitioner and a road data collector for building the route search database. The grid division unit divides geographic data into a grid of a predetermined size, The road data collection unit collects road data associated with each road included in the geographic data. The method of claim 2, The road data is a 2-PASS path search system, characterized in that it comprises one of a highway, urban highway, automobile road, national road, local road. The method of claim 2, The road information is information to which the road data belongs to each grid, The grid information is a 2-PASS path search system, characterized in that the information on the grid to which the road data belongs. The method of claim 4, wherein The information extraction unit, And the grid information to which the source belongs, the road information associated with the grid information, the grid information to which the destination belongs, and the road information associated with the grid information are extracted from the route search database. The method of claim 5, The information extraction unit, Extracting road data in which the grid information and the road information match with respect to the starting point, and extracting road data in which the grid information and the road information are matched with respect to the destination. system. The method of claim 6, The path generation unit, And generating at least one multi-path using the road data associated with the origin and the road data associated with the destination. The method of claim 7, wherein Further comprising a weight setting unit for setting the weight for each road data, The route guide information generation unit, The route searching system of the 2-PASS method, characterized in that for generating one route guide information according to the weight for each road data of the multi-path. The method of claim 1, The route guide information generation unit, And generating route guidance information by using road information, grid information, and guidance information associated with the starting point and the destination. The method of claim 1, The apparatus may further include a route re-search unit for detecting a current route different from the route guidance information by identifying a current position of the vehicle when the vehicle leaves the route during the route guidance based on the route guidance information. The route guide information generation unit, And generating route guidance information associated with the new route. Receiving a starting point and a destination; Extracting road information and grid information associated with the starting point and the destination from a predetermined route search database; Generating a multi-path based on the grid information and the road information; And Generating route guide information using the multi-path according to a predetermined route selection criterion; Path search method of the 2-PASS method comprising a. The method of claim 11, Dividing geographic data into a grid of a predetermined size; Collecting road data associated with each road included in the geographic data; And Maintaining road information to which the road data belong to each grid and grid information to which each road data belongs, in the route search database; The 2-PASS path searching method further comprises. The method of claim 11, The road information is information to which the road data belongs to each grid, The grid information is a path search method of the 2-PASS method, characterized in that the information on the grid to which the road data belongs. The method of claim 12, Extracting road information and grid information associated with the starting point and the destination from a predetermined route search database, Extracting grid information to which the origin belongs and road information associated with the grid information from the route search database; And Extracting grid information to which the destination belongs and road information associated with the grid information; Path search method of the 2-PASS method comprising a. The method of claim 14, Extracting road information and grid information associated with the starting point and the destination from a predetermined route search database, Extracting road data in which the grid information and the road information match with respect to the starting point; And Extracting road data for which the grid information and the road information match with respect to the destination; Path search method of the 2-PASS method comprising a. The method of claim 15, The step of generating a multi-path based on the grid information and the road information, And generating at least one multi-path using road data associated with the starting point and road data associated with the destination. The method of claim 16, Setting a weight for each road data; The step of generating the route guide information using the multi-path according to a predetermined route selection criteria, And generating one route guide information according to the weight of each road data among the multi-paths. The method of claim 11, The step of generating the route guide information using the multi-path according to a predetermined route selection criteria, And generating the route guide information by using road information, grid information, and guide information associated with the starting point and the destination. The method of claim 11, Determining a current position of the vehicle when the vehicle deviates from the route during the route guidance based on the route guidance information; Searching for a new route different from the route guidance information in the multi-path; And Generating route guidance information associated with the new route; The 2-PASS path searching method further comprises. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 11 to 19.

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