KR20180025459A - Customized multiple paths suggestion method and apparatus thereof - Google Patents

Abstract

The present invention relates to a method and an apparatus for suggesting a customized multi-path, comprising: a step of allowing a server to receive navigation information from a terminal so as to perform a navigation algorithm based on a minimum-time cost model; a step of allowing the server to produce candidate paths until satisfying a predetermined path number through the navigation algorithm considering the minimum-time cost model; a step of allowing the server to evaluate path costs for each path when candidate paths, satisfying the predetermined path number, are produced; a step of allowing the server to calculate a path feature value based on path time and path costs with respect to each of the evaluated paths; and a step of allowing the server to compare the calculated path feature value to an average value of feature values of paths which a user selected in the past. Therefore, the server can select predetermined numbers of final candidate paths, having a similar feature value in a preset range, to deliver the selected final paths to the terminal.

Description

[0001] CUSTOMIZED MULTIPLE PATHS SUGGESTION METHOD AND APPARATUS THEREOF [0002]

The present invention relates to a customized multi-path proposal method and apparatus, and more particularly, to a customized multi-path proposal method and apparatus using a user- And more particularly, to a method and apparatus for providing a customized multi-path.

In general, navigation refers to a device or program that facilitates navigation through a map guide (or route guidance to a destination).

The navigation is also called a car navigation system. It is mainly used for transmitting information such as a location of a destination and a surrounding map to a user and informing a user of a route to a destination and a shortest distance.

When a driver inputs a destination to such a navigation device, the navigation device searches for a plurality of routes corresponding to the input destination.

For example, the plurality of routes may include a shortest distance (e.g., a route having the shortest distance, not a shortest driving time), a highway priority (e.g., a route including a toll road for shortening the driving time) And roads (for example, routes with increased driving time but cost savings).

Here, the shortest route and the highway priority route are expected to shorten the driving time. Most drivers want to travel by selecting a route having a short driving time as much as possible. However, in reality, The time difference from the road route may not be large (for example, 10% or less based on the arrival time), and thus the user's route satisfaction with respect to the running cost may not be high.

This is because, in the past, the path is searched according to a different algorithm for each path. For example, it searches for a path with a small cost even if only cost is taken into consideration, or searches for a path with a short time even if only considering time. That is, in the past, it has not been proposed to consider a path selection type of the user.

In other words, it was possible to suggest a path corresponding to a type that was previously biased toward one side (eg cost priority type, time priority type), but it corresponds to the intermediate type (ie intermediate type of cost priority and time priority) It was not possible to suggest a route. For example, it has not been possible to propose a route with high satisfaction with driving time versus driving cost.

Background Art [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2008-0069003 (published on July 25, 2008, navigation apparatus and multipath guidance method thereof).

According to an aspect of the present invention, there is provided a method for managing a route, which is created in order to solve the above problems, And it is an object of the present invention to provide a customized multi-path proposal method and apparatus capable of proposing a customized multi-path for each user.

According to an aspect of the present invention, there is provided a customized multipath proposal method including: a server receiving route search information from a terminal and performing a route search algorithm based on a minimum time cost model; Generating a candidate path until the server satisfies a predetermined reference path number through a path search algorithm considering the minimum time cost; When the candidate path satisfying the reference path number is generated, the server evaluates the path cost for each path; Calculating a path characteristic value based on the path time and the path cost for each path evaluated by the server; And comparing the calculated path characteristic value with a characteristic value average value of paths that the user has selected in the past to select a predetermined number of final path candidates having similar characteristic values within a predetermined range and delivering the selected final path candidates to the terminal; And a control unit.

In the present invention, if the terminal displays the final path candidate received from the server on the screen, and the user selects one path among the displayed final candidates, the terminal transmits the path information selected by the user to the server And the server accumulates the characteristic values of the selected path.

In the present invention, in the step of calculating the path characteristic value, the server generates a Pareto graph in which the X-axis is set to the path cost and the Y-axis is set to the path time, And a path characteristic value for the points on the Pareto line is calculated by generating a Pareto line connecting the points.

According to another aspect of the present invention, there is provided a customized multipath proposal method including: when a path search is requested from a user, performing a path search algorithm based on a minimum time cost model; Generating a candidate path until a preset reference path number is satisfied through a path search algorithm considering the minimum time cost; Evaluating a path cost for each path when the control unit generates a candidate path satisfying the reference path count; Calculating a path characteristic value based on a path time and a path cost for each of the evaluated paths; Comparing the calculated path characteristic value with a characteristic value average value of paths that the user has selected in the past to select a predetermined number of final path candidates having a similar characteristic value within a preset range to display on the screen; And if the user selects one of the displayed final candidates, the control unit accumulates the characteristic values of the selected path.

In the present invention, in the step of calculating the path characteristic value, the control unit generates a Pareto graph in which the X-axis is set as the path cost and the Y-axis is set as the path time, And a path characteristic value for the points on the Pareto line is calculated by generating a Pareto line connecting the points.

In the present invention, the path search algorithm searches for a path only considering the minimum time cost, except for the other operation costs.

In the present invention, the operation cost includes a monetary cost, and a cost obtained by converting the effort and efforts of the driver according to predetermined criteria.

In the present invention, the path cost is calculated as "w ₁ * distance + w ₂ * time + w ₃ * number of rotations + w ₄ * charge ", and w denotes a weight.

According to the present invention, in the evaluation of the path cost, the server excludes an abnormal path having an error according to a preset reference among the candidate paths from the evaluation.

In the present invention, when evaluating the path cost, the control unit excludes an abnormal path having an error according to a preset reference among the candidate paths from the evaluation.

In the present invention, the points passing through the Pareto line are paths that are meaningful in terms of cost and time, respectively, and are characterized by corresponding to the optimal path candidate group.

In the present invention, the path characteristic value is calculated as "path time / path cost ".

According to another aspect of the present invention, a customized multipath proposal apparatus can propose a customized multipath scheme for each user based on the characteristics of the user's past selected paths related to the operation time and operation cost for each user by the customized multipath proposal method The server; And transmitting the path search information to the server, displaying a predetermined number of final path candidates from the server and displaying the final path candidates on the screen, transmitting the path information selected by the user among the displayed final candidates to the server, And a terminal for accumulating the data.

According to another aspect of the present invention, there is provided a customized multipath proposal apparatus, comprising: a personalized multipath proposal method according to any one of claims 1 to 3, And a controller capable of proposing a multi-path.

According to one aspect of the present invention, the present invention can provide a customized multi-path for each user in consideration of a route selection type of a user based on characteristics of a user's past selected routes related to driving time and operation cost.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary diagram showing a schematic configuration of a customized multipath proposal apparatus according to an embodiment of the present invention; Fig.
FIG. 2 is a diagram illustrating a two-dimensional Pareto graph in which a plurality of paths referenced for a customized multipath proposal according to an embodiment of the present invention are analyzed by time and cost.
3 is a flowchart illustrating a customized multipath proposal method according to an embodiment of the present invention;
FIG. 4 is an exemplary diagram showing a schematic configuration of a customized multipath proposal apparatus according to another embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exemplary diagram showing a schematic configuration of a customized multipath proposal apparatus according to an embodiment of the present invention.

1, the customized multipath proposal apparatus according to the present embodiment includes a GPS receiver 110, a map information storage unit 120, a controller 130, and a route information output unit 140 .

The GPS receiver 110 receives the current position information of the navigation device by using a GPS (Global Positioning System) module. The GPS receiver 110 also receives traffic information and vehicle traffic information (not shown) using a real- , Lane information for each road, and the like.

The map information storage unit 120 stores digital map data.

At this time, the map data stored in the map information storage unit 120 includes geographical coordinates indicating latitude and longitude in degrees / minutes / seconds. In addition to the geographical coordinates, UTM (Universal Transverse Mercator) coordinates, UPS (Universal Polar System) coordinates, TM (Transverse Mercator) coordinates, and the like may be used as the map data.

The control unit 130 performs a multipath search based on the information received through the GPS receiver 110 and the map information, outputs the selected route to the screen, and performs destination guidance.

In addition, the controller 130 suggests a customized multi-path for each user in consideration of the path selection type of the user based on the characteristic values of the user's past selected paths related to the operation time and operation cost.

As described above, the control unit 130 first generates paths that clearly distinguish characteristic values (e.g., normalization of required time and path cost), and accumulates the path type (i.e., path characteristic value) selected by the user. Also, the controller 130 proposes the paths having characteristics similar to the types of paths selected by the user as multipaths. In other words, it is determined whether the user chooses a path considering the characteristic value more importantly between the required time and the path cost, and suggests paths having similar characteristic values as multi paths.

At this time, the controller 130 may refer to a Pareto's diagram to suggest routes having characteristic values similar to the user's route selection type.

As shown in FIG. 2, the Pareto graph is a two-dimensional graph obtained by analyzing a plurality of routes by time and cost. The route of FIG. 2 (a) 2 (b) is a path having the maximum cost, while the time required is the minimum. In the path (c) of FIG. 2, each path has a relatively small cost, ) A path is a path whose relative time is relatively short, but whose cost is relatively large.

For reference, an Estimate Time Arrival (ETA) in FIG. 2 indicates a scheduled arrival time.

The path information output unit 140 outputs route guidance information and rest information using an audio signal, a video signal, and / or a vibration signal under the control of the controller 130. The path information output unit 140 may be mounted inside the vehicle, or may be mounted on the outside.

Accordingly, the path information output unit 140 may include a display module (not shown), an audio output module (not shown), and a vibration module (not shown).

When the paths are output through the path information output unit 140, the user selects one of them, and the controller 130 performs guidance on the selected path.

3 is a flowchart illustrating a customized multipath proposal method according to an embodiment of the present invention.

As shown in FIG. 3, when a path search is requested from a user (S101), the controller 130 performs a path search algorithm based on a minimum time cost model (S102).

At this time, the controller 130 searches for a route considering only the minimum time cost except for the other costs (that is, the operation cost).

For example, link cost = time (calculated as traffic information rate and link length).

For the sake of reference, the above-mentioned operation cost does not only mean a monetary cost such as a toll road cost (for example, a toll road passing cost) but also a driver's effort and effort (for example, the number of bridge passes, ), Etc.) based on a predetermined standard. From this, it becomes possible to search for a route in consideration of a user's route selection tendency such as a route that is fast but has a lot of rotation, or a route that is slightly late but is convenient.

The control unit 130 continuously performs the path search algorithm even after one optimal path (or optimal solution) calculated through the path search algorithm considering the minimum time cost is obtained and satisfies the preset number of reference paths (N) To generate a candidate path.

Because the calculated minimum time path can be inaccurate.

Here, the number of reference paths (N) is set to "calculated minimum time + threshold value (a%) ". However, the number of reference paths can be set according to the computing performance.

When the N candidate paths are generated as described above, the controller 130 evaluates the path cost for each path (S103).

For example, the path cost may be calculated as "w ₁ * distance + w ₂ * time + w ₃ * number of rotations + w ₄ * charge + weight * desired factor ". Here, w denotes a weight, and a factor for calculating the path cost may further be included.

When evaluating the path cost, a path having an error possibility among the N candidate paths is excluded. For example, a route that is likely to fail in accordance with pre-set criteria, such as "10 passes through the bridge", is excluded from the evaluation.

For each path thus evaluated, a Pareto graph (or two-dimensional point graph) is created in which the X-axis is set as the path cost and the Y-axis is set as the path time (see FIG.

The Pareto line is formed by connecting the lowermost points (the points closest to the X axis and the Y axis) in the generated Pareto graph (see FIG. 2).

At this time, the points (i.e., paths) passing through the Pareto line become candidate groups that are optimal (i.e., optimal path) as meaningful paths in cost and time, respectively.

Next, the controller 130 calculates a path characteristic value for the paths on the Pareto line (S104).

For example, the path characteristic value may be calculated as "path time / path cost ".

Next, the controller 130 compares the path characteristic value calculated for the paths on the Pareto line with a characteristic value average value (i.e., an average value of characteristic values for the selected path) of paths that the user has selected in the past, N (e.g., three) final path candidates having similar characteristic value values are selected and displayed on the screen (S105).

For example, when it is assumed that the average value of the characteristic values of the user corresponds to the path shown in (b) of FIG. 2, the controller 130 calculates n For example, three) final path candidates.

Therefore, the range for selecting the n (for example, three) final path candidates may become narrower as the user's path selection information accumulates. As the range narrows, the optimal path considering the path selection tendency of the user is proposed .

Accordingly, the user selects one of the displayed n final candidates, and the controller 130 accumulates the characteristic values of the selected path (S106).

As the characteristic values of the path are accumulated as described above, a more precise customized multipath route can be proposed according to the user's tendency (the user's path selection tendency in consideration of cost and time).

Meanwhile, in the above embodiment, an apparatus and a method for proposing a customized multipath route by itself (e.g., navigation terminal) have been described. However, in order to actually generate the customized multipath, many operations are required, Since a lot of storage space is needed, a customized multipath can be proposed in cooperation with a communication-connected server to improve efficiency (refer to FIG. 4).

FIG. 4 is a diagram illustrating a schematic configuration of a customized multipath proposal apparatus according to another embodiment of the present invention, and further includes a communication unit 150 and a server 200 in the configuration of FIG.

The communication unit 150 communicates with the server 200 and includes at least one of a short range wireless communication method (e.g., WiFi, Bluetooth) and a long distance wireless communication method (e.g., 3G, 4G, LTE, etc.).

The server 200 receives information necessary for path search from the controller 130 (i.e., a terminal) and performs an operation for a customized multipath proposal.

For example, when the route search is requested by the user, the server 200 receives the destination information of the corresponding route from the controller 130 (i.e., the terminal) and performs a route search algorithm based on the minimum time cost model. Once the path is created, the path cost for each path is evaluated.

Next, the server 200 generates a Pareto graph in which the X-axis is set as the path cost and the Y-axis is set as the path time, and then the lowest points The closest points) to create a Pareto line, and calculates path characteristics for the paths above the Pareto line.

Next, the server 200 compares the calculated path characteristic value with respect to the paths on the Pareto line to a characteristic value average value (i.e., an average value of characteristic values with respect to the selected path) of paths that the user has selected in the past, (For example, three) final path candidates having similar characteristic values in the final path candidates and transmits the selected final path candidates to the controller 130 (i.e., the terminal) On the screen.

Accordingly, the user selects one route out of the n displayed final candidates, and the server 200 gradually accumulates the characteristic values of the selected route, gradually increasing the user's propensity (the user's route selection tendency in consideration of cost and time, The more precise the customized multipath proposal is possible.

As described above, according to the present embodiment, the server 200 receives information necessary for path search from the control unit 130 (i.e., the terminal) and performs a practical operation for a customized multipath proposal, To the control unit 130 (that is, the terminal) and displays it, thereby making it possible to offer a customized multipath route while reducing the load on the controller 130 (i.e., the terminal).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.

110:
120: map information storage unit
130:
140: Path information output unit
150:
200: Server

Claims (14)

The server receiving the route search information from the terminal and performing a route search algorithm based on the minimum time cost model;
Generating a candidate path until the server satisfies a predetermined reference path number through a path search algorithm considering the minimum time cost;
When the candidate path satisfying the reference path number is generated, the server evaluates the path cost for each path;
Calculating a path characteristic value based on the path time and the path cost for each path evaluated by the server; And
The server compares the calculated path characteristic value with a characteristic value average value of paths that the user has selected in the past and selects a predetermined number of final path candidates having similar characteristic value values within a predetermined range and transmits the selected final path candidates to the terminal The method comprising the steps of:
The method according to claim 1,
The terminal displays the final path candidate received from the server on the screen, and when the user selects one path among the displayed final candidates, the terminal transmits the path information selected by the user to the server, And accumulating the characteristic values of the selected path.
2. The method according to claim 1, wherein, in calculating the path characteristic value,
The server comprises:
The X-axis is set as a path cost, the Y-axis is set as a path time, and a Pareto line connecting points closest to the X-axis and the Y-axis is generated in the Pareto graph, And a characteristic value is calculated.
Performing a route search algorithm on the basis of a minimum time cost model when the controller requests the route search;
Generating a candidate path until a preset reference path number is satisfied through a path search algorithm considering the minimum time cost;
Evaluating a path cost for each path when the control unit generates a candidate path satisfying the reference path count;
Calculating a path characteristic value based on a path time and a path cost for each of the evaluated paths;
Comparing the calculated path characteristic value with a characteristic value average value of paths that the user has selected in the past, and selecting and displaying a predetermined number of final path candidates having a similar characteristic value within a preset range on a screen; And
And if the user selects one path among the displayed final candidates, the control unit accumulates the characteristic values of the selected path.
5. The method according to claim 4, wherein in calculating the path characteristic value,
Wherein,
The X-axis is set as a path cost, the Y-axis is set as a path time, and a Pareto line connecting points closest to the X-axis and the Y-axis is generated in the Pareto graph, And a characteristic value is calculated.
5. The method according to claim 1 or 4,
Wherein the control unit searches for a route only considering the minimum time cost, except for the other operation costs.
7. The method according to claim 6,
Wherein the cost includes a cost of the mobile terminal, a cost of the mobile terminal, and a cost of converting the effort and effort of the driver according to predetermined criteria.
5. The method of claim 1 or 4,
"w ₁ * distance + w ₂ * time + w ₃ * number of rotations + w ₄ * charge &
Wherein w denotes a weight.
2. The method of claim 1,
The server comprises:
Wherein the abnormal path having an error possibility is excluded from the evaluation according to a preset reference among the candidate paths.
5. The method of claim 4,
Wherein,
Wherein the abnormal path having an error possibility is excluded from the evaluation according to a preset reference among the candidate paths.
5. The method according to claim 1 or 4, wherein the points passing through the Pareto line
Each of which is meaningful in terms of cost and time, and corresponds to the optimal path candidate group.
5. The method according to claim 1 or 4,
Quot; path time / path cost ".< / RTI >
A server capable of proposing a customized multi-path for each user on the basis of characteristic values of past selection paths of a user related to operation time and operation cost for each user by the customized multipath proposal method of claim 1; And
And transmits the path search information to the server, displays a predetermined number of final path candidates from the server and displays the final path candidates on the screen, and transmits the path information selected by the user among the displayed final candidates to the server, And a terminal for accumulating the multi-path information.
And a controller capable of proposing a customized multi-path for each user on the basis of the characteristic value of the user's past selected paths related to the operation time and the operation cost for each user by the customized multipath proposal method of claim 4 Customized multipath suggestion device.

Images