JP2012021788A - Navigation system and poi information providing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation system capable of obtaining information required by a driver from much POI information by classifying the POI information into information types.SOLUTION: The navigation system 1 comprises a navigation terminal 2 providing information to a driver through a display screen, and a gateway server 3 communicating with a shared knowledge information server 4 to provide POI information to the navigation terminal 2. The navigation terminal 2 transmits request information including a present position of a vehicle and a display scale of the display screen to the gateway server 3. The gateway server 3 obtains the POI information from the shared knowledge information server 4 according to the request information, and classifies the POI information into information types according to an identification indication set in the POI information in advance. The navigation terminal 2 displays the POI information on the display screen according to the classified information type.

Description

  The present invention relates to a navigation system and a POI information providing method for providing POI information to a navigation terminal mounted on a vehicle.

  Conventionally, a navigation terminal mounted on a vehicle not only provides an optimal route from a departure place to a destination, but also displays information about a point of interest (POI) on a display screen and provides it to a driver. Has been done. However, since the reliability of POI information is unknown and difficult to fully utilize, the reliability information display system disclosed in Patent Document 1 displays the reliability information related to POI data in association with the POI data. As a result, the reliability of the POI information can be increased and fully utilized.

JP 2004-286653 A

  However, in the above-described conventional reliability information display system, the POI information that seems to be effective based on the reliability information is provided with priority, but the reliability information itself is prepared in advance and stored in the database. In many cases, the reliability information is data that everyone receives. Therefore, there is a low possibility that the order in which each user actually wants to go and the superiority or inferiority of the reliability match, and the information required by the driver cannot be obtained. Further, since information is provided based on existing information, there is a problem that it is difficult to provide information that requires real-time property or information that is important to convey the current state.

  In addition, there is a lot of information from users, and the more popular facilities, the more information is provided from many users at the same point, so the information becomes miscellaneous and it becomes difficult to understand important information There was also a point.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and provides a navigation system that can always acquire information required by a driver by classifying a lot of POI information by information type. The purpose is to do.

  A navigation system according to the present invention includes a navigation terminal that provides information to a driver through a display screen, and a server that communicates with a shared knowledge information server and provides POI information to the navigation terminal. Request information including the display scale of the display screen is transmitted to the server. The server acquires POI information from the shared knowledge information server based on the request information, and POI information based on an identification set in advance in the POI information. Are classified by information type, and the navigation terminal displays POI information for each classified information type on the display screen. Thereby, the navigation system according to the present invention solves the above-described problems.

  According to the navigation system of the present invention, the POI information is classified by information type based on the identification set in advance in the POI information, so that it is important for real-time information and vehicles from a lot of POI information. Can be classified and provided, so that the information required by the driver can always be obtained.

It is a block diagram which shows the structure of the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a flowchart which shows the process sequence of POI information provision process by the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure for demonstrating the setting according to information type in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows the relationship between the display scale of the display screen in the navigation system which concerns on 1st Embodiment to which this invention is applied, and the distance made into area information. It is the figure which showed the display image before and after area information-izing in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows an example of the display screen in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows an example of the display screen of the detailed information in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows an example of the display screen of the detailed information in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows an example of the display screen of the detailed information in the navigation system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows an example of the display screen of the detailed information in the navigation system which concerns on 1st Embodiment to which this invention is applied.

  Hereinafter, a first embodiment to which the present invention is applied will be described with reference to the drawings.

[Navigation system configuration]
FIG. 1 is a block diagram showing a configuration of a navigation system according to this embodiment.

  As shown in FIG. 1, a navigation system 1 according to the present embodiment classifies navigation terminal 2 mounted on a vehicle and providing information to a driver through a display screen, and POI information based on real time and importance. A gateway server 3 provided to the navigation terminal 2 and a shared knowledge information server 4 for managing POI information provided from many accounts are provided.

  Here, although the navigation terminal 2 may hold the existing POI information, the driver always obtains the latest information from the gateway server 3, holds the data in the temporary storage area, and displays the driver through the display screen or voice synthesis. Information is provided.

  As shown in FIG. 1, the navigation terminal 2 includes a communication unit 21, a provided information processing unit 22, an information providing unit 23, an input unit 24, and a current position acquisition unit 25.

  The communication unit 21 is a communication unit for communicating with the gateway server 3 and is a mobile communication terminal (such as a mobile phone) owned by the driver or a communication terminal mounted on a vehicle. Communication with the gateway server 3 is performed according to the timing at which the vehicle has moved, the periodic timing, and the operation from the input unit 24, so that the latest information can always be acquired. The communication unit 21 transmits request information including the current position of the vehicle and the display scale of the display screen to the gateway server 3.

  The provided information processing unit 22 performs processing for displaying POI information on the display screen for each information type classified by the gateway server 3, and performs processing for combining the POI information provided from the gateway server 3 on the display screen. We carry out and generate voice guidance.

  The information providing unit 23 is a display screen for presenting information to the driver, a speaker for performing voice guidance, and the like, and displays POI information on the display screen for each information type classified by the gateway server 3 to provide information to the driver. ing.

  The input unit 24 is a means for receiving input from the driver, and includes a touch panel, buttons, and the like.

  The current position acquisition unit 25 is a GPS or the like mounted on the navigation terminal 2 and always acquires the current position of the vehicle at the time of startup or when the vehicle moves.

  Next, the gateway server 3 divides the POI information acquired from the shared knowledge information server 4 into information types such as essential information, important information, and user information, and provides information to the navigation terminal 2. Since the POI information is acquired from the shared knowledge information server 4, the gateway server 3 does not need to hold the same data as the shared knowledge information server 4, but a cache is provided to speed up the response from the request to the data transmission. It is necessary to keep data, and the latest data and other data that is not held is acquired as a difference.

  As shown in FIG. 1, the gateway server 3 includes a POI information classification unit 31, an API communication unit 32, a regional information conversion unit 33, an account management unit 34, and an account information database 35.

  The POI information classifying unit 31 acquires POI information from the shared knowledge information server 4 based on the request information transmitted from the navigation terminal 2 and classifies the POI information by information type based on the identification set in advance in the POI information. Classification. For example, the information is classified into real-time essential information related to a vehicle, real-time important information related to a vehicle, user information from a user related to a driver, user information from other users, and the like. In particular, the essential information includes information that provides the status of the charging station of the electric vehicle, and the important information includes information that provides the status of the parking lot and information that provides the video of the live camera.

  The API communication unit 32 communicates by accessing the shared knowledge information server 4 using an API (Application Program Interface) provided by a microblog service (for example, Twitter, GoogleBuzz, etc.).

  When there is a lot of user information within the range set according to the display scale of the display screen of the navigation terminal 2, the regional information converting unit 33 integrates the user information into one. Processing is in progress.

  The account management unit 34 manages an account that provides POI information based on account information stored in the account information database 35. For example, “This account is an account that provides real-time information related to vehicles”, “Account that provides essential information”, and “Account that provides important information” are preset. , POI information can be classified by account. Also, an inappropriate account may be registered so that POI information from the inappropriate account can be excluded.

  As described above, the account information database 35 stores information related to an account that provides POI information.

  Next, the shared knowledge information server 4 is a server that manages shared knowledge information provided from many accounts, and includes a shared knowledge information database 41.

  The shared knowledge information database 41 stores POI information, which is facility information associated with location information. This information is a microblogging service that allows information provided from many accounts to be shared with location information ( For example, the information provided by Twitter and GoogleBuzz). An account of POI information can be assumed to be an individual user, a corporate user, a facility user, and the like, and these accounts each provide information on the evaluation of the facility and the location and the state of the facility with location information. For example, “XX restaurant was XX was delicious” and “□□ Park was a barbecue and fun” could be considered as an evaluation of the facility. “Vacant car”, “□□ charging area, 2 vacant, 1 charging (20 minutes elapsed)”, etc. can be considered. By providing such POI information to the driver via the navigation terminal 2, it is possible to acquire many people's impressions and evaluations as shared knowledge in real time. Such POI information is provided with an identification (for example, a hash tag of Twitter). With this identification, the gateway server 3 can classify the POI information by information type.

[Procedure for providing POI information]
Next, POI information provision processing by the navigation system 1 according to the present embodiment will be described with reference to the flowchart of FIG.

  As shown in FIG. 2, when the navigation terminal 2 is activated in step S201, the navigation terminal 2 receives request information including information such as the current position of the vehicle, the display scale of the display screen, and the display range in step 202. 3 to send. The provision of the request information is assumed to be automatically provided when the navigation terminal 2 is started. However, the request information may be operated after a driver's operation is performed as one function of the navigation terminal 2.

  When the gateway server 3 receives the request information in step S203, it determines whether or not a detailed information acquisition operation has been performed. This detailed information acquisition operation refers to an operation of acquiring details of POI information associated with an icon by, for example, a driver selecting an icon displayed on a map. Here, a case where there is no detailed information acquisition operation will be described first.

  If it is determined in step S204 that there is no detailed information acquisition operation, the process proceeds to step S205, and the gateway server 3 acquires POI information from the shared knowledge information server 4 based on the request information. At this time, the account used by the driver is registered in advance in the gateway server 3, and from other accounts (for example, the following account in the case of Twitter) associated with the account. Information may also be acquired.

  Here, the POI information acquisition method will be described. As shown in FIG. 3, since only essential information and important information are real-time information, only the latest information is acquired for each account. As for user information, POI information within the range of the display screen is acquired in order from the latest.

  Next, the POI information thus obtained from the shared knowledge information server 4 is classified by information type. First, in step S206, real-time essential information related to the vehicle and real-time important information related to the vehicle are classified and generated from the acquired POI information on the basis of the identification, and then the driver in step S207. The user information from the user related to the user information and the user information from other users are classified and generated. In the present embodiment, the case of classification into four types of information has been described, but the number may be more or less than four.

  Here, the information classification method will be described in detail. Since the POI information has an identification such as a hash tag of Twitter, an identification for essential information, an identification for important information, user information For example, the gateway server 3 can classify the POI information according to the information type by preparing the identification information for the POI information in advance. As another classification method, the account may be registered, and the information type of each account may be registered in advance from a web page or the like connected to the gateway server 3. Thereby, the gateway server 3 can classify the information type based on the account. For example, by previously registering “POI information from this account is important information” and “POI information from this account is essential information”, the gateway server 3 classifies the POI information based on the account. To do. At this time, by registering accounts other than your own account in the form of recommendations, important information and essential information can be expanded. In addition, when there is inappropriate information, many users register it as inappropriate through a web page, etc., so that information from inappropriate accounts is not provided. The POI information can be managed by the user.

  In this way, the gateway server 3 can classify the POI information acquired from the shared knowledge information server 4 into essential information, important information, and user information.

  Next, in step S208, it is determined whether there is more user information than the preset number of displayable items on the navigation terminal 2.

  The navigation terminal 2 displays each POI information at a preset ratio. For example, as shown in FIG. 3, the navigation terminal 2 displays up to 20% of essential information out of the number of cases that can be displayed, displays up to 20% of important information, and displays user information from a user related to the driver. It is set to display up to 30%. Then, user information from other accounts is displayed in the remaining displayable number. However, when there is little user information from other users, it is not limited to this, and the display ratio of essential information and important information may be increased.

  Therefore, the gateway server 3 determines whether or not there is a lot of user information with respect to the displayable number set in this way, and if not, transmits the POI information classified by information type to the navigation terminal 2. If there are more, the process proceeds to step S209.

  In the processes in and after step S209, the user information exceeds the number of information that can be provided by the navigation terminal 2, and therefore, a process for converting to local information for displaying a large amount of POI information located nearby as a single piece of regional information. I do. This process is performed for user information from a user related to the driver and user information from other users as shown in FIG. 3, but only for user information from other users. It may be. By performing this regional information processing, information on the same place is provided in duplicate, or because there is a popular place nearby, so much information on popular places is displayed. It is possible to avoid a situation in which almost no surrounding information is displayed.

  First, in the area information processing, in step S209, POI information is arranged in chronological order, the latest POI information is set as a representative of area information, and in step S210, the next new POI information is within the area information generated in step S209. It is determined whether or not there is.

  The range gathered as the regional information is set according to the display scale of the display screen of the navigation terminal 2 currently displayed. For example, as shown in FIG. 4, if the display scale is within 50 m, the radius is within 5 m. If certain information is collected into one, and the display scale is 200 m, information within a radius of 20 m is displayed together.

  Therefore, if the next new POI information is within the area information range in step S210, the process proceeds to step S211 and is integrated into one area information. Set as representative of regional information. In step S213, it is determined whether or not POI information arranged in chronological order still remains. If it remains, the process returns to step S210 to repeat the above-described processing. If not, the process returns to step S214. Transition.

  In step S214, area information that has not been collected into one piece of information is generated as individual information. In step S215, the area information generated by the above-described processing and the individual information are sequentially displayed from the latest within the range of displayable items. It transmits to the navigation terminal 2.

  Here, a specific example of the area information processing described above will be described with reference to FIG. As shown in FIG. 5 (a), the areas 51, 52, 53, and 54 on the map before the regional information processing are respectively performed with five, six, eight, and four POI information. Exists in range. Therefore, these POI information are integrated into one by performing the regional information processing, and are displayed with icons 55, 56, 57, and 58 as shown in FIG. At this time, the driver can recognize how popular the area is by displaying it together with a number indicating the number of POI information collected. In addition, when the distances for gathering the regional information overlap, the information may be gathered at the middle point of the POI information representing the respective regional information as a boundary.

  Next, processing in the navigation terminal 2 that has received POI information from the gateway server 3 by the above-described processing will be described. The navigation terminal 2 determines whether the information acquired in step S216 is due to the detailed information acquisition operation. If it is not a detailed information acquisition operation, the process proceeds to step S217, and the acquired POI information is displayed on the display screen for each information type.

  Here, the display method of the POI information will be described. As shown in FIG. 3, the user information is set to be displayed in the order of update, but the latest information is provided for essential information and important information. There are two types of settings for giving priority to new information and for giving priority to the distance from the host vehicle. First, when the host vehicle is not displayed on the current display screen or when the display scale is wide, information is displayed in the order of update, giving priority to the latest information. On the other hand, when the display scale is a detailed display and the host vehicle is displayed on the display screen, the information is preferentially displayed in order from the closest distance from the host vehicle.

  Next, an example of the display screen of the navigation terminal 2 will be described with reference to FIG. As shown in FIG. 6, the acquired POI information is displayed on a map for each information type, and information is provided so that the difference between the types can be understood. In addition, the essential information and the important information, which are real-time information, are displayed on the icons themselves as shown in FIG. 6 so that the driver can recognize information such as a full vehicle or an empty vehicle just by looking at the driver. In FIG. 6, full and empty cars are represented by letters, but may be represented by colors and the like. When providing video from a live camera, information is provided so that the camera icon is displayed and the video can be viewed when selected.

  In addition, the user information is displayed separately whether it is regional information converted into regional information or single information that is not summarized, and the regional information shows a number on the icon and how many pieces of information To see if is provided. This allows the driver to quickly recognize how popular each spot is.

  When the POI information is displayed on the display screen of the navigation terminal 2 in this way, the process proceeds to step S218, where it is determined whether or not the vehicle has moved by a distance defined for each display scale. Return to step S202 to update. On the other hand, if the vehicle is not moving, the process proceeds to step S219 to determine whether or not the display scale has been changed. If the display scale has been changed, the process returns to step S202 to update the information. In addition to the processing in steps S218 and S219, the information may be updated using other methods such as when the driver scrolls the display screen or updates the information at regular intervals.

  Next, if the display scale has not been changed in step S219, the process proceeds to step S220, and it is determined whether or not an operation for acquiring detailed information has been performed. If the operation for acquiring the detailed information is not performed, the process returns to step S218 to repeat the processing of steps S218 to S220. If the operation for acquiring the detailed information is performed, the process returns to step S202. .

  Returning to step S202 in this way, the navigation terminal 2 transmits request information, and the gateway server 3 that has received the request information in step S203 determines whether or not there has been an operation for acquiring detailed information in step S204. If there is an operation for acquiring detailed information, the process proceeds to step S221 to determine whether the information is real-time information such as essential information or important information.

  Here, when it is real-time information, time series data of real-time information is acquired and transmitted to the navigation terminal 2 in step S222, and when it is not real-time information, a plurality of pieces of user information constituting area information is obtained in step S223. Is acquired and transmitted to the navigation terminal 2.

  In this way, the navigation terminal 2 that has received the POI information from the gateway server 3 determines in step S216 whether or not the received POI information is due to a detailed information acquisition operation. If the operation is based on the detailed information acquisition operation, the process proceeds to step S224, and the detailed information is displayed on the display screen.

  For example, when displaying details of real-time information such as essential information and important information, a detailed map and detailed contents are displayed as shown in FIG. 7, and a button for displaying the passage of time is set. When the button is selected, the time elapsed until the present time can be confirmed as shown in FIG. Thereby, for example, the driver can read information such as whether or not the parking lot is in and out, and it can be predicted that the vehicle can be parked immediately even if it is full.

  In addition, when displaying details of regional information in which a plurality of pieces of user information are collected, by displaying a list of the collected user information as shown in FIG. So that the driver can recognize if Furthermore, since all user information is displayed with one icon before the detailed information is displayed, an enlarged map is displayed on the detailed information screen shown in FIG. 9 so that the user information can be displayed separately. When the user information “1” is selected on the display screen of FIG. 9, the details of the user information “1” are displayed as shown in FIG.

  Further, in the detailed information screens shown in FIGS. 7 and 10 described above, a button for setting a destination is prepared, and the point of the displayed POI information is selected by the driver as a destination or It can be used as a transit point so that route calculation and route guidance can be performed.

  As described above, the POI information provision processing by the navigation system 1 according to the present embodiment can be performed by repeatedly performing the above-described processing.

[Effect of the first embodiment]
As described above in detail, according to the navigation system according to the first embodiment to which the present invention is applied, the POI information is classified by information type based on the identification set in advance in the POI information. It is possible to classify and provide real-time information or information that is important to the vehicle from the POI information, so that the driver can always obtain necessary information.

  In addition, according to the navigation system, a large amount of shared intelligence information provided by a plurality of users including a company account can be obtained from real-time essential information related to the vehicle, real-time important information related to the vehicle, and the driver. The information is classified into user information from users who are related to the user and user information from other users, so the driver can easily recognize the information he wants, and the necessary information and important information can be acquired immediately. can do.

  Furthermore, according to the present navigation system, since the essential information includes information that provides the status of the charging station of the electric vehicle, the driver can grasp the vacancy status of the charging station, and thereby, which charging station You can determine if you should head to.

  In addition, according to the present navigation system, since the information that provides the parking lot status is included in the important information, the driver can know in advance the parking lot availability information, and thereby the area around the destination. Can prevent you from looking for a parking lot and running around.

  Furthermore, according to this navigation system, the information that provides the video of the live camera is included in the important information, so it is possible to check in advance the status of the place where you are going to pass or the place you are interested in. The person can select an appropriate route based on the actual situation.

  Also, according to the present navigation system, the account management unit for managing account information is provided, and the POI information is classified by information type based on the account information. Therefore, by collecting information related to the account on the web page or the like, the POI is collected by the user. Information can be managed.

  Furthermore, according to the present navigation system, only the latest information for essential information and important information is displayed on the display screen for each account, so that the latest state can be acquired for information that requires real-time performance, and the driver Can get the information they need instantly.

  Also, according to this navigation system, a plurality of pieces of user information within a predetermined range are displayed together as one area information, so that a large amount of information is displayed at one point, thereby preventing the display screen from being difficult to see. can do.

  Furthermore, according to the present navigation system, since the ratio to be displayed on the display screen for each information type of POI information is set in advance, all types of information can be provided at the same time due to differences in information density and update frequency. It is possible to avoid a situation that is not provided depending on the information type due to the influence.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and even if it is a form other than this embodiment, as long as it does not depart from the technical idea according to the present invention, the design and the like Of course, various modifications are possible.

DESCRIPTION OF SYMBOLS 1 Navigation system 2 Navigation terminal 3 Gateway server 4 Shared knowledge information server 21 Communication part 22 Information processing part 23 Information provision part 24 Input part 25 Current position acquisition part 31 POI information classification part 32 API communication part 33 Area information part 34 Account Management Department 35 Account Information Database 41 Shared Knowledge Information Database

Claims (10)

A navigation system comprising a navigation terminal mounted on a vehicle and providing information to a driver through a display screen, and a server for providing POI information, which is facility information associated with position information, to the navigation terminal,
The navigation terminal
Communication means for transmitting request information including a current position of the vehicle and a display scale of the display screen to the server;
Providing information processing means for performing processing for displaying the POI information on the display screen for each information type classified by the server;
The server
The POI information is obtained by communicating with a shared knowledge information server that provides the POI information based on the request information, and the POI information is classified by information type based on an identification set in the POI information in advance. A navigation system characterized by comprising POI information classification means.   Information types classified by the POI information classification means include real-time essential information related to vehicles, real-time important information related to vehicles, user information from users related to the driver, and other information. The navigation system according to claim 1, wherein user information from a user is included.   The navigation system according to claim 2, wherein the essential information includes information that provides a state of a charging station of an electric vehicle.   The navigation system according to claim 2 or 3, wherein the important information includes information for providing a parking lot state.   The navigation system according to any one of claims 2 to 4, wherein the important information includes information that provides video of a live camera.   The server further includes account management means for managing account information of an account that provides the POI information, and the POI information classification means classifies the POI information according to information type based on the account information. The navigation system according to any one of claims 1 to 5.   The navigation system according to claim 6, wherein the provided information processing means displays only the latest information on the display screen for each account providing the POI information with respect to the essential information and the important information.   3. The server according to claim 2, further comprising: a region information converting unit that collects a plurality of pieces of user information within a range set according to a display scale of the display screen into one region information. The navigation system according to any one of claims 7 to 7.   The navigation system according to any one of claims 1 to 8, wherein the provided information processing means presets a ratio to be displayed on the display screen for each type of information of the POI information. A POI information providing method in a navigation system comprising a navigation terminal mounted on a vehicle and providing information to a driver through a display screen, and a server for providing POI information, which is facility information associated with position information, to the navigation terminal. There,
Transmitting request information including the current position of the vehicle and a display scale of the display screen from the navigation terminal to the server;
Based on the request information, the server communicates with a shared knowledge information server that provides the POI information to obtain the POI information, and based on an identification set in advance in the POI information, Categorizing by information type,
Performing a process for displaying the POI information on the display screen of the navigation terminal for each information type classified by the server.

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