JP2010204831A - Device, and method for guiding facility, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a facility guidance device, a facility guidance method, and a computer program for efficiently guiding only a facility corresponding to a user who retrieves a facility. <P>SOLUTION: The genre of a facility to be retrieved is selected on the basis of the operation of a user, and a distance from a registration spot (for example, the house of a user) to a retrieval object spot (for example, the current location of a vehicle) is obtained, and a reference value is set from the obtained distance, and retrieval processing of the facility is executed under retrieval conditions that the genre of the facility is the same as the genre selected with the inside of the retrieval range as an object, and that an evaluation index which is equal to or greater than the reference value is associated with the facility. Then, information of the facility determined to be matched with the retrieval conditions is guided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a facility guidance apparatus, a facility guidance method, and a computer program for guiding a facility located on a map.

  2. Description of the Related Art In recent years, a navigation device is often mounted on a vehicle that provides vehicle travel guidance so that a driver can easily arrive at a desired destination. Here, the navigation device detects the current position of the vehicle by a GPS receiver or the like, acquires map data corresponding to the current position through a recording medium such as a DVD-ROM or HDD or a network, and displays it on a liquid crystal monitor. It is a device that can. Furthermore, in such a navigation apparatus, point information (POI: Point of Interest) such as the type and position of a facility or the like around the current position of the vehicle is also guided. Then, the user sets a destination or a waypoint based on the guided POI, or confirms a point around the vehicle position.

  Here, when guiding facility information related to a facility, in particular, the POI is searched for a facility that meets the user's desired condition based on the current position information of the vehicle and the search condition input by the user, and the condition is met. It is common to provide information about facilities. For example, Japanese Patent Application Laid-Open No. 2008-286585 describes a facility of a type designated by a user (that is, a genre of facilities such as a Japanese food, a gas station, a convenience store, etc.) for an area around a recommended route to a destination. A technique for searching and guiding the found facility is described.

Japanese Patent Laying-Open No. 2008-286585 (pages 8 to 12, FIG. 2)

  Here, when performing facility guidance as in the technique described in Patent Document 1 described above, a database or the like in which POIs are generally stored is searched, and POIs related to facilities that meet the search conditions are selected. The facility name, location, route to the facility, etc. that meet the search condition are guided based on the acquired POI. Here, as the POI, for example, information on the genre of the facility and the position of the facility is stored. Therefore, when the genre and the search target point are specified by the user, the POI is specified around the specified search target point. All facilities corresponding to the selected genre were guided as facilities that meet the search conditions.

  In recent years, an evaluation index is used as a standard for evaluating facilities on the Internet or the like. For example, an average score of evaluation points given by customers using the facility corresponds to the evaluation index. Therefore, it is conceivable to search for facilities around the search target point using the evaluation index. In this case, since the evaluation index is often used as a reference for selecting a facility to visit, it is natural to guide a facility whose evaluation index is equal to or higher than a certain standard.

  Here, for example, when a user such as a home searches for the vicinity of a search target point set in a place where the land is intuition, the user can grasp the information of the surrounding facilities, so the evaluation index is constant. It is possible to guide facilities that are useful to the user by guiding the facilities that are above the standard. However, when searching for a facility in a place where the user has no intuition, information about facilities with a high evaluation index is grasped using a guidebook, etc., but facilities with a low evaluation index cannot be grasped. Conceivable. Therefore, even if the facility has a low evaluation index, it is often a facility that is useful to the user. Therefore, when a user searches for a facility in a place where there is no land intuition, such a facility with a low evaluation index is used. It is desirable to provide information about

  In other words, when a user such as his / her home or the like searches around a search target point set in a place that is familiar with the land, the purpose is to guide the facility if only some facilities with a high evaluation index are guided. It can be fully achieved. On the other hand, when a user such as a tourist spot searches around a search target point set in a place that does not have a land intuition, the user has little grasp of information on surrounding facilities, so only facilities with high evaluation indices Rather, it is possible to request guidance for facilities with low evaluation indices. As described above, if the reference value of the evaluation index of the facility to be searched is set according to the location of the search target point, the user's request can be satisfied.

  The present invention has been made to solve the above-described conventional problems, and obtains a preset evaluation index of a facility located on a map for each facility, based on a distance from a registered point to a search target point. The purpose of the present invention is to provide a facility guidance device, a facility guidance method, and a computer program that enable a user to select a facility that needs guidance by setting a reference value for an evaluation index of the facility to be searched. And

In order to achieve the above object, the facility guidance device (1) according to claim 1 of the present application includes an evaluation index acquisition means (13) for acquiring an evaluation index of a facility located on a map for each facility, and a search target from a registered point. A distance acquisition means (13) for acquiring a distance to a point; a reference value of an evaluation index is set based on the distance acquired by the distance acquisition means; and the facility evaluation index acquired by the evaluation index acquisition means and the Facility search means (13) for searching for facilities around the search target point based on the set reference value, and facility guide means (13) for guiding the facilities searched by the facility search means It is characterized by that.
Here, the “evaluation index” is a value that serves as an evaluation standard for evaluating the service of the facility, ease of use, atmosphere, taste of the food and drink provided, and the higher the evaluation, the evaluation index of the facility Becomes higher.
The “registration point” is a point registered in advance by the user, such as the user's home, the user's work place, and the like.
The “distance from the registered point to the search target point” may be a straight line distance or a road distance along the link.

  Further, the facility guidance device (1) according to claim 2 is the facility guidance device according to claim 1, wherein the reference value becomes smaller as the distance acquired by the distance acquisition means (13) becomes longer, The facility search means (13) searches for a facility having an evaluation index equal to or higher than the reference value.

  Moreover, the facility guidance device (1) according to claim 3 is the facility guidance device according to claim 1 or 2, wherein the density acquisition means (13) acquires the density of the facility around the search target point. The reference value is set based on the facility density acquired by the density acquisition unit and the distance acquired by the distance acquisition unit.

  In addition, the facility guidance method according to claim 4 includes an evaluation index acquisition step for acquiring an evaluation index of a facility located on a map for each facility, a distance acquisition step of acquiring a distance from a registered point to a search target point, A reference value of the evaluation index is set based on the distance acquired by the distance acquisition step, and the facility is acquired around the search target point based on the evaluation index of the facility acquired by the evaluation index acquisition step and the set reference value. A facility search step for searching for a certain facility; and a facility guide step for guiding the facility searched by the facility search step.

  Furthermore, the computer program according to claim 5 is installed in a computer, and an evaluation index acquisition function for acquiring an evaluation index of a facility located on a map for each facility, and a distance for acquiring a distance from a registered point to a search target point A reference value of an evaluation index is set based on the acquisition function and the distance acquired by the distance acquisition function, and the search target is based on the facility evaluation index acquired by the evaluation index acquisition function and the set reference value A facility search function for searching for a facility around the point and a facility guidance function for guiding the facility searched by the facility search function are executed.

  According to the facility guidance device according to claim 1 having the above-described configuration, it is possible to select a facility that needs guidance for the user based on the positional relationship between the registered point and the search target point, and all the facilities are uniformly provided. It is possible to efficiently guide only the facilities that require guidance for the user. As a result, user convenience is improved.

  Further, according to the facility guidance device according to claim 2, when a user close to the registered point searches for the vicinity of the search target point set in a place with a land intuition, some of the facilities having a high evaluation index In the case where the user who is far from the registered point searches for the vicinity of the search target point set in a place where the land is not considered, the facility having a low evaluation index can be guided. As a result, it is possible to appropriately provide information required by the user.

  In addition, according to the facility guidance device according to claim 3, since the set reference value changes according to the density of the facility, the number of facilities guided based on the search result can be adjusted to an appropriate number. It becomes possible. For example, when a search is performed in an area where facilities are densely populated, the number of facilities to be guided thereafter can be limited by narrowing the search condition. Further, when a search is performed in an area where facilities are sparse, the number of facilities to be guided thereafter can be increased by loosening the search conditions.

  In addition, according to the facility guidance method described in claim 4, it is possible to select the facilities that need guidance for the user based on the positional relationship between the registered points and the search target points, and uniformly guide all the facilities. Instead, it is possible to efficiently guide only the facility corresponding to the user who searches for the facility. As a result, user convenience is improved.

  Furthermore, according to the computer program of the fifth aspect, based on the positional relationship between the registration point and the search target point, the computer can select the facilities that require guidance for the user, and all the facilities can be uniformly selected. Instead of guiding, it is possible to efficiently guide only the facility corresponding to the user who searches for the facility. As a result, user convenience is improved.

It is the block diagram which showed the navigation apparatus which concerns on 1st Embodiment. It is the figure which showed an example of the point memorize | stored as POI. It is a flowchart of the facility guidance processing program according to the first embodiment. It is the figure which showed the genre selection screen displayed on a liquid crystal display. FIG. 10 is an explanatory diagram for explaining a reference value setting process in step 7; It is explanatory drawing explaining the search process of the facility of step 8. FIG. It is the figure which showed the POI guidance screen displayed on a liquid crystal display in 1st Embodiment. It is a flowchart of the facility guidance processing program according to the second embodiment. It is an explanatory view explaining the facility search process of step 39. It is the figure which showed the POI guidance screen displayed on a liquid crystal display in 2nd Embodiment.

  DETAILED DESCRIPTION Hereinafter, a facility guidance device according to the present invention will be described in detail with reference to the drawings based on a first embodiment and a second embodiment in which the navigation device is embodied.

[First Embodiment]
First, a schematic configuration of the navigation device 1 according to the first embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation device 1 according to the first embodiment.
As shown in FIG. 1, the navigation device 1 according to the first embodiment is based on a current position detection unit 11 that detects a current position of a vehicle, a data recording unit 12 that records various data, and input information. A navigation ECU (evaluation index acquisition means, distance acquisition means, facility search means, facility guidance means, density acquisition means) 13 that performs various arithmetic processes, an operation unit 14 that receives operations from the user, and a user A liquid crystal display 15 that displays various information related to maps, POI guidance, etc., a speaker 16 that outputs voice guidance related to route guidance, a DVD drive 17 that reads a DVD that is a storage medium storing a program, a traffic information center, and a facility And a communication module 18 for communicating with an information center such as an information providing center or a probe center. To have. The POI refers to digital content data linked with location information such as facility information and spot information.

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, an altimeter (not shown), and the like, and can detect the current vehicle position, direction, vehicle traveling speed, and the like. It has become. Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a wheel by counting the pulse which generate | occur | produces. Note that the navigation device 1 does not have to include all the four types of sensors, and the navigation device 1 may include only one or more types of sensors.

  The data recording unit 12 is also a hard disk (not shown) as an external storage device and a recording medium, and a driver for reading the map information DB 31 and a predetermined program recorded on the hard disk and writing predetermined data on the hard disk And a recording head (not shown).

Here, the map information DB 31 stores various map data necessary for route guidance, traffic information guidance, and map display.
Specifically, the map data searches for link data 32 relating to road (link) shape, node data 33 relating to node points, POI data 34 which is information relating to points such as facilities, intersection data relating to each intersection, and routes. Search data, search data for searching points, maps, roads, image information such as traffic information, and image drawing data for drawing on the liquid crystal display 15.

Here, as the POI data 34, information related to points such as a departure point, a destination, and a passing point in the navigation device 1 is stored. For example, accommodation facilities such as hotels and inns, refueling facilities such as gas stations, commercial facilities such as shopping malls, supermarkets, shopping centers, entertainment facilities such as theme parks and game centers, eating and drinking facilities such as restaurants, bars and taverns, and public facilities Parking facilities such as parking lots, transportation facilities, religious facilities such as temples and churches, public facilities such as museums and museums, historic sites, tourist spots, viewpoints (scenic spots), plazas, intersections, public buildings Information on points such as monuments.
The POI data 34 includes, for each point, a POI number that is an identifier of the point, a POI name that indicates the name of the point, a type of the point (a genre in terms of facilities, such as “parking lot”, “post office”, “restaurant” , Etc.), a POI coordinate indicating the coordinates of a point, and the like.

  Furthermore, the POI data 34 related to the facility of the first embodiment includes information related to an evaluation index for evaluating the facility. Here, the evaluation index is acquired from a facility information providing center, a probe center, or the like as will be described later, and becomes an evaluation standard for evaluating the service, ease of use, atmosphere, taste of provided food, etc. Value. Specifically, the facility information providing center and probe center totaled and averaged the evaluation points (“1 (low)” to “5 (high)”) from each user who used the facility. Average value. Therefore, the evaluation index “1” has the lowest evaluation and “5” has the highest evaluation.

Here, FIG. 2 is a diagram showing an example of information relating to the facility among the information relating to the points stored as the POI data 34.
For example, in the example of the POI data 34 shown in FIG. 2, a temple A (genre: temple, evaluation index “4.2”) corresponding to the POI number: “10001” is installed at the point of coordinates (x1, y1). It shows that. Further, it is shown that a parking lot (genre: parking lot, evaluation index “3.3”) corresponding to the POI number “10002” is installed at the point of coordinates (x2, y2). Similarly, information on other facilities is also stored.

When the navigation device 1 searches for a spot, the POI data 34 is used to search for a spot (a type is specified) located around a predetermined search target spot (for example, the current position of the vehicle). (Only points corresponding to the specified type) are retrieved, and the POI relating to the points meeting the search conditions is acquired from the map information DB 31. Then, a landmark is displayed for the corresponding position of the map image displayed on the liquid crystal display 15 or a list of spot names and evaluation indices that match the search condition is displayed to the user. I will guide you.
Furthermore, in the first embodiment, as will be described later, a range within a predetermined distance (for example, within a radius of 10 km) from a search target point (for example, the current position of the vehicle) is defined as a search range. When searching for a facility as a point in particular, only a facility that is located within the search range and whose evaluation index is greater than or equal to a reference value is searched. The reference value is set based on the distance from the registration point (for example, the user's home) to the search target point.

  On the other hand, the navigation ECU (Electronic Control Unit) 13 is a guide route setting process for setting a guide route from the current position to the destination when the destination is selected, and around the search target point (for example, the current position of the vehicle). The electronic control unit performs overall control of the navigation apparatus 1 such as POI guidance processing for searching for a point in the navigation system and guiding a point that matches the search condition based on the search result. The CPU 41 as an arithmetic device and a control device, the RAM 41 used as a working memory when the CPU 41 performs various arithmetic processes, a RAM 42 for storing route data when a route is searched, and a control program In addition, an internal storage device such as a ROM 43 in which a facility guidance processing program (see FIG. 3) and the like are recorded and a flash memory 44 that stores a program read from the ROM 43 is provided.

  The operation unit 14 is operated when inputting a departure point as a travel start point and a destination as a travel end point, and includes a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. In addition, it can also be comprised by the touchscreen provided in the front surface of the liquid crystal display 15.

  The liquid crystal display 15 includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, guidance route from the departure point to the destination, guidance information along the guidance route, news, weather forecast, Time, mail, TV program, etc. are displayed. In addition, when a location search is performed, a landmark is displayed for the corresponding position of the map image displayed on the liquid crystal display 15, or a list of location names and evaluation indices that match the search conditions is displayed. indicate.

  The speaker 16 outputs voice guidance for guiding traveling along the guidance route based on an instruction from the navigation ECU 13 and traffic information guidance.

  The DVD drive 17 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Then, the map information DB 31 is updated based on the read data.

In addition, the communication module 18 is traffic information including traffic information, regulation information, traffic accident information, and the like transmitted from a traffic information center such as a VICS (registered trademark: Vehicle Information and Communication System) center or a probe center. For example, a mobile phone or DCM.
Furthermore, in the first embodiment, the communication module 18 periodically receives the POI data 34 relating to the facility evaluation index from the facility information providing center or the probe center. Then, the map information DB 31 is updated based on the POI data 34 received from the facility information providing center or the probe center.

  Next, a facility guidance processing program executed by the CPU 41 in the navigation device 1 having the above configuration will be described with reference to FIG. FIG. 3 is a flowchart of the facility guidance processing program according to the first embodiment. Here, the facility guidance processing program is executed when a predetermined operation of the user is received in the operation unit 14, searches for a facility particularly as a point around the search target point (for example, the current position of the vehicle), and the search result. It is a program that guides facilities that meet the search conditions based on. Note that the program shown in the flowchart of FIG. 3 below is stored in the RAM 42 or ROM 43 provided in the navigation apparatus 1 and is executed by the CPU 41.

  First, in step (hereinafter abbreviated as S) 1 in the facility guidance processing program, the CPU 41 obtains a scheduled travel route that is currently set in the navigation device 1. Here, the scheduled travel route is a route from the departure point (for example, the user's home) set according to the route search result to the destination, for example, when the destination is input by operating the operation unit 14. Since the route search process is already known, its description is omitted.

  Next, in S <b> 2, the CPU 41 displays a genre selection screen on the liquid crystal display 15. Then, on the genre selection screen displayed on the liquid crystal display 15, the user selects the genre (type) of the facility to be searched.

Here, FIG. 4 is a diagram showing a genre selection screen 51 displayed on the liquid crystal display 15. As shown in FIG. 4, the genre selection screen 51 displays a list 52 of genres that can be selected by the user. When the genre name displayed in the genre list 52 is selected by the user, the CPU 41 selects the genre of the selected genre name as the genre of the facility to be searched.
Further, various scroll buttons 54 are arranged on the left side of the genre list 52. When the user operates the scroll button 54, the CPU 41 changes the genre name displayed in the genre list 52 to another genre name according to the operation content.
A genre selection button 55 is arranged on the right side of the genre list. When any genre selection button 55 is selected by the user, the CPU 41 selects a genre corresponding to the selected genre selection button 55 (for example, a genre related to “car” when a car button is operated). ) Is displayed in the display target area 52.
In the genre selection screen, the user can select not only one type of genre but also a plurality of types of genres at the same time.

  Subsequently, in S <b> 3, the CPU 41 selects one or more types of genres of the facility to be searched based on the user operation received on the genre selection screen 51.

  In S <b> 4, the CPU 41 acquires the position coordinates of the current position of the vehicle as a search target point by the current position detection unit 11.

  Next, in S5, CPU41 acquires a user's home position coordinate as a registration point. Note that the position coordinates of the user's home are specified based on the address, telephone number, etc. of the home input in advance by the user and map information, and are stored in the RAM 42 or the like. In the first embodiment, the user's home is used as the registration point. However, the registration point may be a place where the user has a sense of land, and the user's work place may be used as the search target point.

  Thereafter, in S6, the CPU 41 calculates the distance from the user's home (registered point) to the current position of the vehicle (search target point) based on the position coordinates and map information acquired in S4 and S5. Basically, the straight line distance from the user's home to the search target point is calculated regardless of the shape of the planned travel route.

  Subsequently, in S7, the CPU 41 sets the reference value of the evaluation index based on the distance from the user's home calculated in S6 to the current position of the vehicle. Here, the reference value is used as a lower limit value of the evaluation index that becomes a search condition when searching for facilities as described later.

The reference value setting process in S7 will be described in detail below. FIG. 5 is an explanatory diagram for explaining the reference value setting process in S7. FIG. 5 particularly shows a case where the departure point of the scheduled travel route 64 is a registered point, that is, the user's home.
As shown in FIG. 5, in the first embodiment, the reference value is set to any one of “1”, “2”, and “3” based on the distance from the user's home to the current position of the vehicle. The In that case, the reference value is set lower as the distance from the user's home to the current position of the vehicle is longer.
Specifically, a range 61 within one third of the “straight distance from the user's home to the destination of the planned travel route” centering on the user's home (for example, “from the user's home to the destination of the planned travel route) When the vehicle is located within a radius of 10 km from the user's home), the CPU 41 sets the reference value to “3”. If the vehicle is traveling on the planned travel route 64, the reference value is set to “3” when the vehicle is positioned on the route A.
Further, a range 62 within 1/3 to 2/3 of the “linear distance from the user's home to the destination of the planned travel route” centering on the user's home (for example, “the destination of the planned travel route from the user's home”). When the vehicle is located within a radius of 10 km to 20 km from the user's home, the CPU 41 sets the reference value to “2”. If the vehicle is traveling on the planned travel route 64, the reference value is set to “2” when the vehicle is positioned on the route B.
On the other hand, a range 63 that is 2/3 or more of the “linear distance from the user's home to the destination of the planned travel route” centered on the user's home (for example, “the linear distance from the user's home to the destination of the planned travel route” When “” is 30 km, the CPU 41 sets the reference value to “1” when the vehicle is located in a range outside the circle with a radius of 20 km from the user's home. If the vehicle is traveling on the planned travel route 64, the reference value is set to “1” when the vehicle is positioned on the route C.
For example, in the example shown in FIG. 5, the vehicle 65 is positioned on the route B within the range 62, so “2” is set as the reference value. Even if the vehicle is not located on the planned travel route, the reference value is set based on the range 61 to 63 where the vehicle is located.
Then, as will be described later, the CPU 41 executes a search process for searching only facilities that are in the same genre as the selected genre and are associated with an evaluation index that is equal to or higher than a set reference value.

After that, in S8, the CPU 41 uses a range within a predetermined distance (for example, within 10 km) from the current position of the vehicle as a search range, is a facility of the same genre as the selected genre, and evaluates more than the reference value set in S7. The facility search process is executed using the association of the index as a search condition. Specifically, first, POI data of a facility located in the search range and associated with the selected genre is extracted from the POI data 34 (see FIG. 2) of the map information DB 31. Further, an evaluation index of the extracted POI data is acquired. Then, it is determined whether or not there is POI data associated with an evaluation index equal to or higher than the reference value in the extracted POI data, and when there is POI data associated with an evaluation index equal to or higher than the reference value. Further extracts only the POI data as POI data matching the search condition.
Then, as a result of the search process, POI data (including the POI number, evaluation index, etc.) of the facility determined to meet the search conditions is stored in the RAM 42 or the like.

The facility search process in S8 will be described in detail below. FIG. 6 is an explanatory diagram for explaining the facility search process in S8. In the following, it is assumed that there are temples A to G around the scheduled travel route 64 from the user's home to the destination shown in FIG. 5, and the user selects “Tera” as the genre. A case where facility search is performed will be described as an example.
As shown in FIG. 6, there are A temple to G temple in seven places around the scheduled travel route 64. In addition, each evaluation index associated with Temple A to Temple G is “4.2” for Temple A, “2.7” for Temple B, “3.6” for Temple C, “ 1.8 ", Temple E is" 4.1 ", Temple F is" 1.9 ", Temple G is" 2.8 ".
Therefore, when a facility is searched when there is a vehicle on the route A shown in FIG. 6, first, among the facilities located in the search range 71, the temples A and B that are facilities with the genre “Tera” Temple POI data is extracted. Thereafter, it is determined that only temple A associated with the evaluation index equal to or higher than the reference value set in S7 (“3” in range 61) matches the search condition, and the POI data (POI number, evaluation of temple A) (Including indexes and the like) are stored in the RAM 42 and the like.
Further, when a facility is searched when there is a vehicle in the position on the route B shown in FIG. 6, first, among the facilities located in the search range 72, the temples C and D are facilities having a genre of “Tera”. Temple POI data is extracted. After that, it is determined that only the temple C associated with the evaluation index equal to or higher than the reference value set in S7 (“2” in the range 62) matches the search condition, and the POI data of the temple C (POI number, evaluation) (Including indexes and the like) are stored in the RAM 42 and the like.
Further, when a facility is searched when there is a vehicle in the position on the route C shown in FIG. 6, first, among the facilities located in the search range 73, the temples E and F that are facilities whose genre is “Tera” POI data for temples and temples G is extracted. Thereafter, it is determined that the temples E, F, and G associated with the evaluation index equal to or higher than the reference value set in S7 (“1” in the range 63) match the search condition. And G temple POI data (including POI number, evaluation index, etc.) are stored in the RAM 42 or the like.

  Subsequently, in S9, the CPU 41 reads the POI data 34 of the facility stored in the RAM 42 in S8 (that is, the POI data of the facility determined to meet the search condition in the facility search process).

  In S10, the CPU 41 displays the POI data 34 of the facility read out in S9 on the liquid crystal display 15, thereby guiding the location, name, evaluation index, etc. of the facility that meets the search condition.

Here, FIG. 7 is a view showing the POI guidance screen 81 displayed on the liquid crystal display 15 in S10.
As shown in FIG. 7, the POI guidance screen 81 is composed of two display areas: a left screen 82 that displays a map image around the vehicle and a right screen 83 that displays POI data 34 of a facility that meets the search conditions. The
Then, the left screen 82 shows the vehicle position mark 84 indicating the current position of the vehicle, the planned travel route line 85 drawn along the planned travel route on the map image, and the facility determined to meet the search condition. It is comprised from the facility marks 86-88 which show a position.
The right screen 83 is provided with information display spaces 91 to 93 for displaying the POI data 34 of the facility. For example, in the example shown in FIG. 7, each information display space 91 to 93 includes the facility name, the distance from the current position of the vehicle, the available time (business hours, Display time etc.) and evaluation indicators. In the information display spaces 91 to 93, the POI data 34 of the facilities searched within the search range are displayed side by side in descending order of evaluation index.

  If there are many facilities determined to meet the search conditions, only the POI data 34 of facilities whose evaluation index is a certain value (for example, the reference value +1.0) or more may be guided. Moreover, you may comprise so that the character size and character color which display the information of a high evaluation index | facility may be changed. Further, in the information display spaces 91 to 93, the POI data 34 of the facilities searched within the search range may be displayed side by side in the order closer to the current position of the vehicle or in the order closer to the destination, rather than in the descending order of the evaluation index. good.

As described above in detail, in the navigation device 1 according to the first embodiment, the facility guidance method by the navigation device 1 and the computer program executed by the navigation device 1, the genre of the facility to be searched is selected based on the user's operation. (S2), the distance from the registration point (for example, the user's home) to the search target point (for example, the current position of the vehicle) is acquired (S6), a reference value is set from the acquired distance (S7), The facility search process is executed with the search condition that the facility is of the same genre as the target genre and is associated with an evaluation index equal to or higher than the reference value (S8). Then, since the facility information determined to meet the search condition is guided (S10), the facility requiring guidance for the user can be selected based on the positional relationship between the registered point and the search target point. That is, it is possible to efficiently guide only the facilities corresponding to the user who searches for facilities, instead of guiding all facilities uniformly. As a result, user convenience is improved.
In addition, since the reference value is set lower as the distance from the registered point to the search target point is longer, when searching for the vicinity of the search target point set in a place where the user is close to the registered point, Only some facilities with high evaluation index are guided, and when a user who is far from the registered point searches around the search target point set in a place without land intuition, the facility with low evaluation index may be guided it can. As a result, it is possible to appropriately provide information required by the user.

[Second Embodiment]
Next, a navigation device according to a second embodiment will be described with reference to FIGS. In the following description, the same reference numerals as those of the navigation device 1 according to the first embodiment in FIGS. 1 to 7 denote the same or corresponding parts as those of the navigation device 1 according to the first embodiment. Is.

The schematic configuration of the navigation device according to the second embodiment is substantially the same as that of the navigation device 1 according to the first embodiment. Various control processes are also substantially the same as those in the navigation apparatus 1 according to the first embodiment.
However, the navigation device according to the second embodiment is different from the navigation device 1 according to the first embodiment in that the facility along the planned travel route currently set in the navigation device is searched when the facility search process is performed. Is different.

  Below, the facility guidance process program which navigation ECU13 performs in the navigation apparatus which concerns on 2nd Embodiment is demonstrated based on FIG. Here, the facility guidance processing program according to the second embodiment is executed when a user's predetermined operation is received in the operation unit 14 and searches for a facility as a point along the planned travel route, and the search result. It is a program that guides facilities that meet the search conditions based on it.

  First, in S <b> 31, the CPU 41 acquires a scheduled travel route that is currently set in the navigation device 1. Here, the scheduled travel route is a route from the departure point (for example, the user's home) set according to the route search result to the destination, for example, when the destination is input by operating the operation unit 14. Since the route search process is already known, its description is omitted.

  Next, in S <b> 32, the CPU 41 displays a genre selection screen on the liquid crystal display 15. Then, on the genre selection screen displayed on the liquid crystal display 15, the user selects the genre (type) of the facility to be searched. The genre selection screen displayed on the liquid crystal display 15 is the same as that in the first embodiment (see FIG. 4), and thus the description thereof is omitted.

  Subsequently, in S33, the CPU 41 selects one type or a plurality of types of genres of the facility to be searched based on the user operation received on the genre selection screen 51.

  In S34, CPU41 acquires a user's home position coordinate as a registration point. In the second embodiment, the user's home is used as the registration point. However, the registration point may be a place where the user can understand the land, and the user's work place may be used as the search target point.

  Next, in S35, the CPU 41 sets a search target point serving as a reference for the search range on the planned travel route acquired in S31. For example, the CPU 41 sets search target points for all node points on the planned travel route. Moreover, you may set a search object point with respect to the division point at the time of classifying a driving plan route for every predetermined distance (for example, every 100 m).

  Subsequently, the following processing of S36 to S39 is executed for each search target point set in S35. Specifically, the processes of S36 to S39 are repeatedly executed in order from the search target point set near the departure place of the planned travel route. And after the process with respect to all the search object points set is completed, it transfers to S40.

  First, in S <b> 36, the CPU 41 acquires the position coordinates of the search target point to be processed from the map information DB 31. If the search target point is set to a node point on the planned travel route, the coordinates of the node point are acquired from the node data 33.

  Next, in S37, the CPU 41 calculates the distance from the user's home (registered point) to the processing target search target point based on the position coordinates and map information acquired in S34 and S36. The distance calculated at this time is a road distance along the planned travel route.

  Subsequently, in S38, the CPU 41 sets a reference value for the evaluation index based on the distance from the user's home calculated in S37 to the search target point to be processed. Here, the reference value is used as the lower limit value of the evaluation index that is a search condition when searching for facilities as in the first embodiment. The reference value setting process in S38 is similar to the reference value setting process executed in S7 of the facility guidance processing program of the first embodiment if the current position of the vehicle is replaced with a search target point to be processed. Therefore, the description is omitted (see FIG. 5). However, in the second embodiment, the reference value is set to one of “1”, “2”, and “3” based on the road distance instead of the linear distance from the user's home to the search target point. Is done.

Thereafter, in S39, the CPU 41 sets the range within a predetermined distance (for example, within 100 m) from the search target point to be processed as a search range, and is a facility of the same genre as the selected genre, which is equal to or greater than the reference value set in S38. The facility search process is executed on the condition that the evaluation index is associated with each other. Specifically, first, POI data of a facility located in the search range and associated with the selected genre is extracted from the POI data 34 (see FIG. 2) of the map information DB 31. Further, an evaluation index of the extracted POI data is acquired. Then, it is determined whether or not there is POI data associated with an evaluation index equal to or higher than the reference value in the extracted POI data, and when there is POI data associated with an evaluation index equal to or higher than the reference value. Further extracts only the POI data as POI data matching the search condition.
Then, as a result of the search process, POI data (including the POI number, evaluation index, etc.) of the facility determined to meet the search conditions is stored in the RAM 42 or the like.

The facility search process in S39 will be described in detail below. FIG. 9 is an explanatory diagram for explaining the facility search process in S39. In the following, it is assumed that there are H temples to N temples around the planned travel route 64 from the user's home to the destination shown in FIG. 9 used in the description of the first embodiment. A case where facility search is performed by selecting “Tera” as a genre will be described as an example. Also. FIG. 9 particularly shows a case where the departure point of the scheduled travel route 64 is a registered point, that is, the user's home.
As shown in FIG. 9, there are seven H temples to N temples around the scheduled travel route 64. In addition, the evaluation indexes associated with H to N temples are “4.2” for H temple, “2.7” for I temple, “3.6” for J temple, and “3.6” for K temple. 1.8, L is “4.1”, M is “1.9”, and N is “2.8”.
Therefore, the facility search in S39 is performed for each of the four search target points 102 on the route A within 1/3 of the “distance from the user's home to the destination of the planned travel route” shown in FIG. As a result, POI data of the temples H and I, which are facilities with the genre “Tera”, among the facilities located in each search range 103 are extracted as a result. However, it is determined that only the H temple associated with the evaluation index that is equal to or higher than the reference value set in S38 (“3” at the search target point on the route A) matches the search condition. Data (including POI number, evaluation index, etc.) is stored in the RAM 42 or the like.
Further, for each of the seven search target points 104 on the route B within 1/3 to 2/3 of the “road distance from the user's home to the destination of the planned travel route” shown in FIG. When the facility search is repeatedly executed, POI data of J temple and K temple, which are facilities having a genre of “Tera”, among the facilities located in each search range 105 is extracted as a result. However, it is determined that only J temples that are associated with an evaluation index that is equal to or higher than the reference value set in S38 (“2” at the search target point on the route B) are matched with the search condition. Data (including POI number, evaluation index, etc.) is stored in the RAM 42 or the like.
In addition, for the four search target points 106 on the route C that is 2/3 or more of the “distance from the user's home to the destination of the planned travel route” shown in FIG. As a result, POI data of L temple, M temple, and N temple, which are genres of “Tera”, among the facilities located in each search range 107 is extracted as a result. However, it is determined that the L temple, the M temple, and the N temple that are associated with the evaluation index that is equal to or higher than the reference value set in S38 (“1” for the search target point on the route C) matches the search condition. , POI data (including POI number, evaluation index, etc.) of L temple, M temple and N temple are stored in the RAM 42 or the like.

  Thereafter, when the processes of S36 to S39 are executed for all the search target points set in S35, the process proceeds to S40. On the other hand, when the processing of S36 to S39 is not executed for all the search target points, a search target point adjacent to the current process target search target point in the destination direction of the planned travel route is newly set. Is selected as a search target point, and the processes after S36 are executed again.

  In S40, the CPU 41 reads out the POI data 34 of the facility stored in the RAM 42 in S39 (that is, the POI data of the facility determined to meet the search condition in the facility search process executed for each search target point). .

  In S41, the CPU 41 displays the POI data 34 of the facility read out in S40 on the liquid crystal display 15, thereby guiding the location, name, evaluation index, etc. of the facility that meets the search condition along the planned travel route. .

Here, FIG. 10 shows the POI guidance screen 111 displayed on the liquid crystal display 15 in S41.
As shown in FIG. 10, the POI guidance screen 111 includes a left screen 112 that displays a schematic overall shape of the planned travel route set in the navigation device, and POI data of a facility that meets the search condition along the planned travel route. 34 is composed of two display areas of the right screen 113 displaying 34.
The left screen 112 displays a planned travel route line 114 indicating the shape of the planned travel route, a vehicle position mark 115 indicating the current position of the vehicle, and a facility determined to meet the search condition along the planned travel route. It is comprised from the facility marks 116-120 which show a position.
The right screen 113 is provided with information display spaces 121 to 125 for displaying the POI data 34 of the facility. For example, in the example shown in FIG. 10, the information display spaces 121 to 125 include the facility name, the distance from the current position of the vehicle, and the sales information in the POI data 34 of the facility that meets the search condition along the planned travel route. Display time, evaluation index, etc. In the information display spaces 121 to 125, the POI data 34 of the found facilities are displayed side by side in descending order of evaluation index.

For example, in the example shown in FIG. 10, when a facility search is performed along the planned travel route in the genre “Tera”, six facilities that match the search conditions from point A to point E within the search range along the planned travel route. Indicates when is searched.
In that case, information on “H temple” having the highest evaluation index among the six facilities searched within the search range along the planned travel route is displayed in the information display space 121. In addition, information on “L temple” having the next highest evaluation index among the six facilities searched within the search range is displayed in the information display space 122. Similarly, information about “J temple”, “N temple”, and “M temple” is displayed in the information display spaces 123 to 125 in descending order of evaluation index.
As a result, when there are a plurality of facilities determined to meet the search conditions along the planned travel route, the facilities are displayed with priority from the POI data 34 of the facility having a high evaluation index.
If there are many facilities determined to meet the search conditions, only the POI data 34 of facilities whose evaluation index is a certain value (for example, the reference value +1.0) or more may be guided. Moreover, you may comprise so that the character size and character color which display the information of a high evaluation index | facility may be changed. Further, in the information display spaces 121 to 125, POI data 34 of facilities searched for may be displayed side by side, not in the descending order of the evaluation index, but in the order closer to the current position of the vehicle or in the order closer to the destination.

As described in detail above, in the navigation device according to the second embodiment, the facility guidance method by the navigation device, and the computer program executed by the navigation device, the planned travel route set in the navigation device is acquired (S31), The genre of the facility to be searched is selected based on the user's operation (S32), the search target point is set on the planned travel route (S35), and the distance from the registered point (for example, the user's home) to each search target point is set. Acquired (S37), set a reference value from the acquired distance (S38), and are associated with an evaluation index that is the same genre as the genre selected around each search target point and that is equal to or higher than the reference value The facility search process is executed using the information as a search condition (S39). As a result of the facility search process executed for each search target point, information on the facility determined to meet the search condition is guided (S41), so based on the positional relationship between the registered point and the search target point. , It is possible to select facilities that require guidance for the user. That is, it is possible to efficiently guide only the facilities corresponding to the user who searches for facilities, instead of guiding all facilities uniformly. As a result, user convenience is improved.
In addition, since the reference value is set lower as the distance from the registered point to the search target point is longer, when searching for the vicinity of the search target point set in a place where the user is close to the registered point, Only some facilities with high evaluation index are guided, and when a user who is far from the registered point searches around the search target point set in a place without land intuition, the facility with low evaluation index may be guided it can. As a result, it is possible to appropriately provide information required by the user.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in the first embodiment and the second embodiment, the reference value is set based on the distance from the registration point (for example, the user's home) to the search target point (S7, S38). A reference value may be set in consideration of the density of surrounding facilities. In other words, there are many facilities that meet the search conditions in areas where the facility density is high, and there are few facilities that meet the search conditions in areas where the facility density is low, so the density of facilities around the search target point is high. In some cases, it is desirable to set the reference value higher than normal, and to set the reference value lower than normal when the density of facilities around the search target point is low.
Specifically, first, a search range centered on the search target point (within a radius of 10 km centered on the search target point in the first embodiment and within a radius of 100 m centered on the search target point in the second embodiment). Get the density of the facility. As a result, when the density of the acquired facilities is 10 pieces / km ² or less, the reference value is set 0.5 lower than the normal reference value shown in FIG. On the other hand, when the density of the acquired facilities is 30 / km ² or more, the reference value is set 0.5 higher than the normal reference value shown in FIG. As a result, the number of facilities guided based on the search result can be adjusted to an appropriate number.

  Further, the reference value may be set based on a user operation. Specifically, when the facility search process is performed, the reference value set in S7 or S38 is guided to the user. When the user wishes to change the guided reference value, the operation unit 14 is used to allow the user to input a new reference value. Then, facility search processing (S8, S39) is executed based on the inputted reference value. In addition, when performing facility search along the planned travel route as in the second embodiment, the user is allowed to input a reference value for each of the ranges 61 to 63.

  In the first embodiment and the second embodiment, the facility evaluation index is acquired from the facility information providing center or the probe center via the communication module 18. You may set from a setting history. For example, a higher evaluation index is set for a facility that has frequently visited and a facility that has been frequently set for a destination.

  Further, the size of the search range may be configured to be changeable based on a user operation. Furthermore, the shape of the reference range or the wide-area reference range is not limited to a circular shape or an annular shape. For example, the administrative division may be set as a reference range or a wide-area reference range.

  In the facility search process according to the first embodiment, the travel schedule route may not be set in the navigation device 1. In addition, the planned travel route to be searched for facilities in the second embodiment may be a route whose departure point is other than the user's home.

1 Navigation device 13 Navigation ECU
15 Liquid crystal display 16 Speaker 34 POI data 41 CPU
42 RAM
43 ROM

Claims (5)

Evaluation index acquisition means for acquiring for each facility the evaluation index of the facility located on the map;
Distance acquisition means for acquiring the distance from the registered point to the search target point;
A reference value of the evaluation index is set based on the distance acquired by the distance acquisition means, and the facility is acquired around the search target point based on the evaluation index of the facility acquired by the evaluation index acquisition means and the set reference value. Facility search means for searching for a facility;
A facility guidance device for guiding the facility retrieved by the facility retrieval device. The reference value becomes smaller as the distance acquired by the distance acquisition means is longer,
The facility guidance device according to claim 1, wherein the facility retrieval unit retrieves a facility having an evaluation index equal to or higher than the reference value. Having density acquisition means for acquiring the density of facilities around the search target point;
The facility guide device according to claim 1, wherein the reference value is set based on the density of the facility acquired by the density acquisition unit and the distance acquired by the distance acquisition unit. . An evaluation index acquisition step of acquiring for each facility an evaluation index of the facility located on the map;
A distance acquisition step for acquiring the distance from the registered point to the search target point;
A reference value of the evaluation index is set based on the distance acquired by the distance acquisition step, and the facility is acquired around the search target point based on the evaluation index of the facility acquired by the evaluation index acquisition step and the set reference value. A facility search step for searching for a facility;
A facility guidance method for guiding the facility retrieved in the facility retrieval step. On the computer,
An evaluation index acquisition function for acquiring the evaluation index of the facility located on the map for each facility;
A distance acquisition function that acquires the distance from the registered point to the search target point,
A reference value of the evaluation index is set based on the distance acquired by the distance acquisition function, and around the search target point based on the facility evaluation index acquired by the evaluation index acquisition function and the set reference value A facility search function to search for a facility;
A facility guidance function for guiding the facility searched by the facility search function;
A computer program for executing

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