JP6090030B2 - Posted sentence search system, posted sentence search apparatus, posted sentence search method, and computer program - Google Patents

Description

  The present invention relates to a posted text search system, a posted text search device, a posted text search method, and a computer program for searching for posted text posted on a computer network.

  In recent years, there has been provided a system that allows a user to post a posted text on a computer network via a terminal and to browse a posted text posted by another user. For example, there are blogs, SNS (Social Network Service), Twitter (registered trademark), chat and the like (hereinafter referred to as SNS). In addition, these posted texts include many posted texts that post information related to traffic information such as traffic jam information and traffic stop information.

  Here, although SNS etc. have the merit which can acquire the newest information quickly, since the amount of information is enormous, it was difficult to extract and provide only necessary information for the user who browses. Therefore, as a means for searching for information necessary for the user from a large number of information, for example, in Table 2010/004612 gazette, when searching for point information from a DB, the user can search for names, genres, etc. When a keyword is input, a point corresponding to the keyword (hereinafter referred to as a search point) is searched, and the position information and address information of the search point are extracted from the DB, and the search point position information corresponds to the search point. Proposes a technology to obtain text data of the area name (road name, city name, etc.) to be obtained from the DB and output text data combining the address information of the search point extracted from the DB and the text data of the area name as a search result Has been.

No. 2010/004612 (pages 13-17, FIG. 2)

  However, in the technique described in Patent Document 1, position information and address information are extracted from the DB for all search points corresponding to the input keyword, and text data is generated from the extracted position information and address information. Will be output. In particular, depending on the content of the input keyword, the number of search points may be very large. For example, if a search is performed using “convenience store” or “parking lot” as a keyword in an urban area, the number of search points is expected to be very large. Therefore, there is a problem that processing load and search time related to search increase, and information that is not required by the user is also output. Furthermore, it has become necessary to filter the search results.

  The present invention has been made to solve the above-described conventional problems, and appropriately extracts only the posted text on which the information required by the user is posted from the posted text posted on the computer network. It is an object of the present invention to provide a posted text search system, a posted text search device, a posted text search method, and a computer program that make it possible.

In order to achieve the above object, the posted text search system (1), the posted text search device, the posted text search method, and the computer program according to the present invention require a user among a large number of posted texts posted on a computer network. And a posting program search method for searching for a posted message using the system and apparatus, and a computer program for realizing the following functions for the device. Specifically, an approach intersection road that acquires a planned travel route of a moving body such as a vehicle, intersects the planned travel route, and is a road on which a vehicle traveling on the planned travel route can enter from the planned travel route. To get. Next, it is determined whether or not there is a traffic congestion factor facility that is a factor causing traffic jam in the vicinity of the approaching intersection road. As a result, if it is determined that there is a congestion factor facility around the approaching intersection road, the name of the approaching intersection road or the name of the intersection between the planned travel route and the approaching intersection road is obtained as the search target name, and obtained. The search word is set from the character string of the search target name. Then, a posted sentence corresponding to the set search word is extracted from the posted sentences posted on the computer network.
The “moving body” may be a two-wheeled vehicle or the user (person) in addition to the vehicle.
In addition, the “facility that causes traffic congestion” refers to a facility that may cause traffic on the surrounding road due to the facility, more specifically, a road that is adjacent to the road due to a vehicle entering the facility. For example, a large-scale commercial facility with a high ability to attract customers, a facility that has just been introduced to media such as TV and magazines, and the like.

  In the posted text search system (1), the posted text search device, the posted text search method, and the computer program according to the present invention having the above-described configuration, the user's planned travel route is based on the facility that causes traffic congestion and the surrounding road shape. It is possible to set the name of the road that is likely to be congested and the name of the intersection connected to the road among the intersection roads that can be entered from. As a result, by using the set search word, it is possible to appropriately extract only the posted text on which the information required by the user is posted from the posted text posted on the computer network. In particular, it is possible to grasp traffic information related to the user's planned travel route, more specifically, traffic information on intersection roads that affect the flow of vehicles on the planned travel route at a faster timing via posted text. It becomes possible. In addition, since it is not necessary to cause the user to input search conditions, the operability can be improved.

1 is a schematic configuration diagram illustrating a posted text search system according to the present embodiment. It is the block diagram which showed the structure of the posting text search system which concerns on this embodiment. It is the figure which showed an example of the contribution text information memorize | stored in contribution text information DB of a contribution text information management center. It is the figure which showed an example of the facility data contained in map information. It is a block diagram which shows typically the control system of the communication terminal which concerns on this embodiment. It is a flowchart of the posting text search processing program concerning this embodiment. It is the figure which showed the contribution text guidance screen displayed on a display. It is a flowchart of the sub process program of the search word setting process which concerns on this embodiment. It is a figure explaining the identification method of the approach intersection road. It is the figure shown about the extraction range of the congestion factor facility around the approaching intersection road. It is the figure shown about the extraction range of the congestion factor facility around the approaching intersection road. It is the figure which showed the positional relationship of an approach crossing road and a congestion factor facility. It is the figure which showed the specific example of the setting process of a search word.

  DETAILED DESCRIPTION Hereinafter, a posted text search system according to an embodiment of the present invention will be described in detail with reference to the drawings based on an embodiment. First, a schematic configuration of the posted text search system 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram showing a posted text search system 1 according to the present embodiment. FIG. 2 is a block diagram showing a configuration of the posted text search system 1 according to the present embodiment.

  As shown in FIG. 1, a posted message search system 1 according to the present embodiment includes a posted message search server (post message search device) 3 included in the posted message management center 2, and posted message information included in the posted message management center 2. It is basically composed of a management server 4 and a communication terminal 7 owned by the user 6. The communication terminal 7 includes a navigation device as a vehicle-mounted device mounted on a vehicle, a mobile phone, a PDA, a tablet terminal, a smartphone, and the like. Further, the user 6 may be moving by a moving means other than the vehicle (for example, a train, a bicycle, a walk, etc.) or may be in a state of not moving. The posted text management center 2 and the communication terminal 7 are configured to be able to transmit and receive electronic data to and from each other via the communication network 8.

  Here, when the user 6 of the communication terminal 7 requests browsing of the posted message posted on the computer network, the posted message search server 3 is based on the planned travel route of the user 6, the surrounding road shape, and the facility information. Then, the search condition is set, and the posted text that has posted the content related to the user 6 who has requested the information is extracted from the posted text stored in the posted text information management server 4, and the information related to the extracted posted text Is delivered to the communication terminal 7 to enable the user 6 to view the contents of the posted text. Details of the posted text search server 3 will be described later.

  The posted text information management server 4 manages blogs, SNS (Social Network Service), Twitter (registered trademark), chat, etc. (hereinafter referred to as SNS, etc.), and posted text posted on a computer network in the SNS or the like. It is a server device that stores and provides. In addition to the communication terminal 7, posting of posted messages by the user can be performed from a PC or other communication device that can be connected to a computer network.

  The posted text information management server 4 has a posted text information DB 9 as a storage medium, and posted posted texts are sequentially stored in the posted text information DB 9. The posted text information DB 9 includes a posted text (a character string), a posting time when the posted text is posted, a position of a poster when the posted text is posted (hereinafter referred to as a posted position), The contributor's ID is also stored. Here, FIG. 3 is a diagram showing an example of posted texts collected and provided in the posted text information management server 4. As shown in FIG. 3, the posted text includes a posting time, a posting position, a user ID, a text of the posted text, and the like. In addition, in the posted message information management server 4, information related to posted messages posted by users from all over the country is cumulatively stored in the posted message information DB 9, and when the amount of stored data exceeds a predetermined amount, the posted message information management server 4 The information is deleted in order. The posted message information management server 4 may be installed in a center different from the posted message management center 2.

  On the other hand, the communication terminal 7 is an information communication terminal having a function for specifying the current position of the communication terminal 7 such as GPS (that is, the current position of the user 6) and a map image around the current position of the user 6. For example, a navigation device, a mobile phone, a PDA, a tablet terminal, a smartphone, and the like are applicable.

  The communication terminal 7 is connected to the communication network 8 via a transmission / reception circuit unit (RF) 33 described later, and is configured to be capable of bidirectional communication with the posted message management center 2. And when the information regarding the posted text is received from the posted text management center 2, the text content of the received posted text is displayed on the display of the communication terminal 7 as described later, and the content of the posted text can be viewed by the user. (See FIG. 7). Details of the communication terminal 7 will be described later.

The communication network 8 includes a large number of base stations arranged in various parts of the country and a communication company that manages and controls each base station. The base station and the communication company are connected to each other by wire (optical fiber, ISDN, etc.) or wirelessly. It is configured by connecting.
Here, the base station has a transceiver (transmitter / receiver) for communicating with the communication terminal 7 and an antenna. The base station performs wireless communication between the communication companies, and at the end of the communication network 8 and communicates with the communication terminal 7 within the range (cell) within which the radio waves of the base station can reach. Have the role of relaying.

  Next, the configuration of the posted text search server 3 constituting the posted text search system 1 will be described in more detail with reference to FIG. As shown in FIG. 2, the posted text search server 3 basically includes an information management ECU 11, a map information DB 12 as information recording means connected to the information management ECU 11, and a center communication device 13.

  The information management ECU 11 is an electronic control unit that performs various controls in the posted text search server 3 as shown in FIG. The CPU 21 as an arithmetic device and a control device, the RAM 22 used as a working memory when the CPU 21 performs various arithmetic processes, various control programs, and a post message search processing program (FIG. 6) described later are stored. In addition, an internal storage device such as a ROM 23 is provided. The information management ECU 11 constitutes various means as processing algorithms together with the ECU of the communication terminal 7. For example, the planned movement route acquisition unit acquires a planned movement route of a moving body such as a vehicle. The intersecting road acquisition means acquires an approaching intersection road that is a road that intersects the planned travel route and that can be entered by the vehicle traveling on the planned travel route from the planned travel route. The traffic congestion facility determination means determines whether or not there is a traffic congestion factor facility which is a facility causing traffic congestion around the approaching intersection road. The search target name acquisition means acquires, as a search target name, the name of the approaching intersection road or the name of the intersection of the approaching intersection road and the approaching intersection road when it is determined that there is a congestion factor facility around the approaching intersection road. . The search condition setting means sets a search word from the character string of the search target name acquired by the search target name acquisition means. The search means extracts a posted sentence corresponding to the search word set by the search condition setting means from the posted sentences posted on the computer network. The turning point determination means determines whether there is a point that can be turned on the approaching intersection road. The map information acquisition means acquires map information. The facility identification information acquisition means acquires facility identification information that is information for identifying a congestion factor facility.

  The map information DB 12 is storage means for storing map information. Here, the map information stored in the map information DB 12 includes various information necessary for route search and map display including a road network. For example, link data 25 relating to roads (links), node points, and the like. Node data, intersection data 26 for each intersection, facility data 27 for facilities, search data for searching for routes, search data for searching for points, map display data for displaying a map, and the like. The map information DB 12 is periodically updated to new map information.

  Here, the link data 25 includes, for example, a link ID for identifying the link, end node information for specifying a node located at the end of the link, a road type of the road that the link constitutes, a road name, and the like. Remembered. Further, as the intersection data 26, node IDs of nodes constituting the intersection, intersection names, presence / absence of turn restrictions, and the like are stored. In addition to the facility ID that identifies the facility, the facility name, the genre, and the location of the facility, the facility data 27 indicates whether or not the facility corresponds to a traffic congestion factor facility that is a factor causing traffic congestion. Is stored for information identifying Here, the congestion factor facility is a facility that may cause traffic on the surrounding road due to the facility, more specifically, a traffic on the surrounding road caused by a vehicle entering the facility. Examples of such facilities include large-scale commercial facilities with high ability to attract customers, and facilities that have just been introduced to media such as TV and magazines. Then, whether or not it corresponds to a congestion factor facility is determined based on, for example, a past traffic jam history acquired from the traffic information center or media posting information acquired from an external server. In addition, the posted text search server 3 may determine whether the facility corresponds to a congestion factor facility, or another server may be configured.

  Here, FIG. 4 is a diagram showing an example of the facility data 27. As shown in FIG. 4, the facility data 27 includes a facility ID, a facility name, a facility type (genre), location information (latitude and longitude) that identifies the location of the facility, and whether or not it corresponds to a congestion factor facility. Flag information is included. For example, in the example shown in FIG. 4, it is shown that two facilities “XX home center” and “XX cafe” are congestion factor facilities. Then, the information management ECU 11 starts from the planned travel route when there is a traffic congestion factor facility around the approaching cross road that intersects the planned travel route of the user 6 and can be entered from the planned travel route as described later. It is predicted that the lane entering the approaching intersection road is congested, and the name of the approaching intersection road or the name of the intersection connected to the approaching intersection road is set as a search word.

  The map information DB 12 is not included in the posted text search server 3 but may be configured in an external server, and the posted text search server 3 may acquire the facility data 27 by communication from the external server.

  The center communication device 13 is a communication device for communicating with the communication terminal 7 via the communication network 8. In the present embodiment, information related to the posted text is transmitted / received to / from the communication terminal 7 via the center communication device 13.

  Next, a schematic configuration of the communication terminal 7 owned by the user 6 will be described with reference to FIG. FIG. 5 is a block diagram schematically showing a control system of the communication terminal 7 according to the present embodiment.

  As shown in FIG. 5, the communication terminal 7 has a data bus BUS, a CPU 31, a memory 32 storing user information (user ID, name, etc.), map information, etc. regarding the user 6 who owns the communication terminal 7, a communication network A transmission / reception circuit unit (RF) 33 that transmits / receives a signal to / from a base station of the network 8, converts an RF (Radio Frequency) signal received by the transmission / reception circuit unit 33 into a baseband signal, and converts the baseband signal into an RF signal A baseband processing unit 34 for converting to an input / output unit 37, an input / output unit 37 that is an interface with a microphone 35, a speaker 36, and the like, a display 38 configured with a liquid crystal display panel, and an input operation unit configured with a touch panel, a keyboard, and the like 39 and the GPS 40 are connected to each other.

  Here, the CPU 31 built in the communication terminal 7 is a control unit of the communication terminal 7 that executes various operations according to the operation program stored in the memory 32, and constitutes the communication terminal ECU 41 together with the memory 32. Various processing contents of the communication terminal ECU 41 are displayed on the display 38 as necessary.

  The memory 32 is set in user information (user ID, name, etc.) and map information related to the user 6 who owns the communication terminal 7, application programs such as an installed navigation application, current location history of the user 6, and navigation application. This is a storage medium in which the guide route (scheduled travel route of the user 6), a posted text search processing program (FIG. 6) described later, and the like are stored.

  Here, the map information stored in the memory 32 basically has the same configuration as the map information that the posted text search server 3 has. For example, link data related to roads (links) and node data related to node points. , Intersection data regarding each intersection, facility data regarding facilities, map display data for displaying a map, search data for searching for a route, search data for searching for a point, and the like. The map information may be acquired by communication from an external server (for example, the posted text search server 3) without being stored in the memory 32. The memory 32 may be constituted by a hard disk, a memory card, an optical disk such as a CD or a DVD, and the like.

  The display 38 is disposed on one surface of the housing, and a liquid crystal display, an organic EL display, or the like is used. A top screen for executing various applications installed in the communication terminal 7, screens related to the executed applications (Internet screen, mail screen, navigation screen, etc.), and various information such as images and videos are displayed. Is done. In particular, on the navigation screen displayed when the navigation application is executed, map images including roads, traffic information, guidance routes from the departure point to the destination (scheduled movement route), guidance information along the guidance route, etc. Is displayed. Further, in the present embodiment, information about the posted text received from the posted text management center 2 (sentence content of posted text, ID of the poster, etc.) is also displayed.

  The input operation unit 39 is constituted by a touch panel provided on the front surface of the display 38. Then, the communication terminal ECU 41 performs control to perform various corresponding operations based on an electrical signal output by pressing the touch panel or the like. In particular, this embodiment is used when starting and operating various application programs, posting a posted message, browsing a posted message already posted on a computer network, and the like. The input operation unit 39 can also be constituted by various keys such as a number / character input key, a cursor key for moving a cursor for selecting displayed contents, and an enter key for confirming selection.

  In addition, the GPS 40 can detect the current position and the current time of the communication terminal 7 (that is, the user 6) by receiving the radio wave generated by the artificial satellite. Moreover, it is good also as a structure provided with other apparatuses (for example, gyro sensor etc.) for detecting the present position and direction of the communication terminal 7 other than GPS40.

  The transmission / reception circuit unit 33 is configured to be able to communicate with the posted text management center 2 via the communication network 8. Then, it is possible to acquire traffic information such as traffic jam information, regulation information, traffic accident information, etc. via an external traffic information center (for example, VICS (registered trademark) center) not shown. Further, it is also used for transmitting a posted text browsing request to / from the posted text management center 2 and receiving information on the extracted posted text.

  Next, a posted message search processing program executed in the communication terminal 7 and the posted message search server 3 constituting the posted message search system 1 having the above configuration will be described with reference to FIG. FIG. 6 is a flowchart of the posted text search processing program according to this embodiment. Here, the posted text search processing program is executed after the navigation application is started in the communication terminal 7, and the content related to the user 6 who has requested browsing of the posted text from the posted text posted on the computer network. This is a program that extracts posted texts and provides information about the extracted posted texts to the user 6. Note that the programs shown in the flowcharts of FIGS. 6 and 8 below are stored in the RAM, ROM, or the like included in the posted text management center 2 or the communication terminal 7 and are executed by the CPU 21 or CPU 31.

First, a posted text search processing program executed in the communication terminal 7 will be described.
In step (hereinafter abbreviated as S) 1, the CPU 31 determines whether or not a destination setting operation has been performed in the navigation application.

  If it is determined that the destination setting operation has been performed (S1: YES), the process proceeds to S2. On the other hand, when it is determined that the destination setting operation has not been performed (S1: NO), the posted text search processing program is terminated.

  In S2, the CPU 31 acquires a guide route from the departure place to the set destination. The acquired guide route is stored in the memory 32 or the like. The guide route may be configured to be searched by the communication terminal 7, or may be configured to be searched by an external server and the communication terminal 7 to receive the searched guide route from the server. A known Dijkstra method is used for searching for a guidance route. Further, the departure point may be the current position of the user or an arbitrary point selected by the user (for example, home). The guide route acquired in S2 is a planned travel route for the user 6 (a vehicle when the user 6 is on the vehicle). The guide route is acquired and stored as position information consisting of numerical values. Specifically, the guide route is specified by a series of coordinates (latitude and longitude) points from the departure point to the destination.

  In S <b> 3, the CPU 31 transmits a posted text browsing request to the posted text search server 3. Note that the posting request for the posted text includes an ID for identifying the communication terminal 7 that is the transmission source of the browsing request and the position information of the guide route acquired in S2. The posted message search server 3 that has received the browsing request, as will be described later, “relates to the user 6 who requested browsing of the posted message from the posted messages posted on the computer network based on the received browsing request. “Posted Text Posting Contents to be Performed” is extracted (S12 to S14).

  Next, in S <b> 4, the CPU 31 receives information related to the posted text transmitted from the posted text management center 2. The information related to the posted text received in S4 is information related to the posted text extracted from the posted text posted on the computer network based on the browsing request transmitted in S3. This is information related to a “posted sentence posting content related to the user 6 who requested“. Further, the information related to the posted text includes the posted time of the posted text, the posting position, the ID of the poster, and the like, along with the text of the posted text.

  After that, in S5, the CPU 31 displays information related to the posted text received in S4 on the display 38 together with the guide route acquired in S2. Note that the information to be displayed may display all of the text of the posted text, the posting time when the posted text is posted, the posting position, and the ID of the poster, or may be configured to display only a part. However, at least the text of the posted text is displayed. If the posted message cannot be received in S4, only the guidance route acquired in S2 is displayed.

Here, FIG. 7 is a view showing the posted message guidance screen 51 displayed on the display 38 in S5. As shown in FIG. 7, the posted message guidance screen 51 includes two display areas, a left screen 52 that displays a guidance route and a right screen 53 that displays information related to a posted message.
The left screen 52 includes a map image 54 around the user, a current position mark 55 indicating the current position of the user, a guide route 56, and posting position marks 57 to 60 indicating the posting position of the displayed posted text. Composed.
The right screen 53 is provided with information display spaces 61 to 64 for displaying information related to the posted text. In each information display space 61-64, the ID of the poster who posted the posted text. Display the contents of each post. Further, when there are a large number of posted sentences, it is desirable that the posted sentences are switched and displayed by a scroll operation. Further, when displaying information related to a posted message, a posted message posted at a position close to the user may be displayed with priority. Furthermore, the posted text determined to have a high degree of matching with the search word in the search process (S13) described later may be displayed with priority. In addition, it is set as the structure which displays only the left screen 52, without displaying the right screen 53, and after the posting position mark 57-60 of the left screen 52 is selected, the information display space 61-64 of the corresponding posting text is newly provided. You may comprise so that it may arrange | position on a screen. Further, the posting position marks 57 to 60 may not be displayed.

  Then, the user can view the content of the posted message in which the content related to the user 6 is posted by visually recognizing the posted message guidance screen 51 shown in FIG. In particular, in this embodiment, when there is a traffic congestion factor facility around the approaching intersection road that intersects with the guidance route and is accessible from the guidance route as described later, the name of the approaching intersection road and the approaching intersection road Since the name of the intersection connected to is set as the search word, traffic congestion information related to the guidance route (more specifically, traffic congestion information on the intersection road that affects the flow of vehicles on the guidance route) is grasped at a faster timing. It becomes possible.

Next, a posted text search processing program executed in the posted text search server 3 will be described.
First, in S11, the CPU 21 receives a browsing request transmitted from the user 6 who requests browsing of the posted text. Note that the browsing request includes an ID that identifies the communication terminal 7 that is the transmission source of the browsing request and position information of a guide route (scheduled movement route of the user 6) set in the communication terminal 7. Further, the position information of the guide route included in the received browsing request is temporarily stored in a storage medium such as the RAM 22.

  Next, in S12, the CPU 21 executes a search word setting process (FIG. 8) described later. Here, the search word setting process is posted on the computer network based on the position information of the guide route included in the browsing request received in S11 and the map information including information on the congestion factor facility and the surrounding road shape. This is a process for setting a search word for searching for “posted text posting content related to the user 6 who has requested browsing of the posted text” from the posted text.

  After that, in S13, the CPU 21 uses the search word set in S12 to post “posted content related to the user 6 who has requested to view the posted text” from the posted text posted on the computer network. A search process for searching for “sentence” is executed. Specifically, information related to the posted text including the search word set in S12 in the text is extracted from the posted text information (FIG. 3) stored in the posted text information DB 9 of the posted text information management server 4. To do.

  For example, when the combination of “XX street” and “traffic jam” and the combination of “XX intersection” and “traffic jam” are set as search words in S13, “congestion AND XX street OR XX intersection” is set. ”Is set as a search condition, and information about posted texts that contain both“ XX street ”and“ traffic ”text in the text, and posted text that contains both“ XX intersection ”and“ traffic ”text Are extracted from the posted text information DB 9.

  Thereafter, in S14, the CPU 21 transmits the information related to the posted text extracted in S13 to the communication terminal 7 that has requested browsing of the posted text. As a result, in the communication terminal 7 that has requested browsing of the posted text, information related to the posted text that posted the content related to the user 6 is displayed (S5).

  Next, the sub-process of the search word setting process executed in S12 will be described with reference to FIG. FIG. 8 is a flowchart of a sub-processing program for search word setting processing.

  First, in S <b> 21, the CPU 21 reads position information of the guide route (user's planned travel route) included in the browsing request received in S <b> 11 from the RAM 22.

  Next, in S22, the CPU 21 specifies an intersection included in the guide route based on the position information of the guide route read in S21 and the intersection data 26 stored in the map information DB 12, and information on the specified intersection. (Node IDs of nodes constituting intersections, intersection names, etc.) are acquired.

  Subsequently, in S23, the CPU 21 selects an intersection road that intersects the guide route at the intersection specified in S22 based on the position information of the guide route read in S21 and the link data 25 stored in the map information DB 12. Information relating to the identified intersection road (link ID of the link constituting the intersection road, road type, road name, etc.) is acquired.

  After that, in S24, the CPU 21 specifies an approaching intersection road that is a road on which a vehicle traveling on the guidance route can enter from the guidance route among the intersection roads identified in S23 based on the intersection data 26 and the link data 25. To do. For example, as shown in FIG. 9, the case where the intersection roads 72 and 73 are connected to the guide route 70 at the intersection 71 and the intersection roads 75 and 76 are connected at the intersection 74 will be described. In the example shown in FIG. 9, the cross roads 72 and 73 are not restricted in the traveling direction, but the cross roads 75 and 76 are restricted in one way. Therefore, a vehicle traveling on the guide route 70 can enter the intersection roads 72, 73, and 76, but cannot enter the intersection road 75. Therefore, the intersection roads 72, 73, and 76 are specified as approach intersection roads. In S24, in addition to the one-way restriction, the approach intersection road is specified in consideration of restrictions such as vehicle entry prohibition and pedestrian exclusive use.

  Next, in S25, the CPU 21 extracts a congestion factor facility around the approaching intersection road specified in S24 based on the facility data 27 (FIG. 4). In particular, when a plurality of approaching intersection roads are identified in S24, the process of S25 is executed for each identified approaching intersection road.

  As described above, the congestion factor facility is a facility that may cause congestion on the surrounding road due to the facility, and more specifically, a traffic jam on the surrounding road due to a vehicle entering the facility. For example, a large-scale commercial facility with a high ability to attract customers, a facility shortly after being introduced to media such as TV and magazines, and the like. Whether the facility around the approaching intersection road is a congestion factor facility or a facility other than the congestion factor facility is specified by the facility data 27. In addition to the congestion factor facility along the approaching intersection road, the congestion factor facility around the approaching intersection road also covers the congestion factoring facility along the road that intersects the approaching intersection road or along the parallel road. Is desirable. For example, as shown in FIG. 10, in addition to the congestion factor facility along the approaching intersection road 73, the congestion factor facility along the road 77 intersecting with the approaching intersection road 73 and the parallel road 78 is also selected. However, it is a condition that the congestion factor facility is within a predetermined distance D (for example, 100 m) from the approaching intersection road 73.

  Further, it is desirable that the congestion factor facility to be extracted in S25 is not greatly separated from the guide route. For example, as shown in FIG. 10, it may be a condition that it is within a predetermined distance L (for example, 1 km) from the guide route 70. As shown in FIG. 11, the approaching intersection road 73 is a predetermined width or more (for example, a general road or more). It is good also as a condition that it exists in the range until it intersects with the road 79. Further, it is not necessary to provide a condition of a predetermined width or more.

  The following processes of S26 to S28 are executed for each congestion factor facility extracted in S25. And after processing of S26-S28 is performed for all the congestion factor facilities extracted by said S25, it transfers to S13.

  In S26, the CPU 21 compares the position of the congestion factor facility extracted in S25 with the position of the approaching intersection road, thereby causing the congestion factor facility on the lane side where the vehicle that has entered the guide route from the approaching route travels. It is determined whether there is. That is, it is determined whether there is a congestion factor facility on the left side when viewed from the guidance route side with respect to the approaching intersection road in the left-hand traffic area, and on the right side when viewed from the guidance route side with respect to the approaching intersection road in the right-hand traffic area. It is determined whether or not there is a congestion factor facility. For example, as shown in FIG. 12, when the guide route 70 and the approaching intersection road 73 are located, it is determined whether there is a congestion factor facility in the area A in the left-hand traffic area, and in the right-hand traffic area in the area B. It is determined whether there is a congestion factor facility. However, if the approaching intersection road 73 is a one-way street, it is determined that there is a traffic congestion factor facility on the lane side where the vehicle travels, regardless of which side the traffic factor factor facility is in the region A or region B. .

  If it is determined that there is a congestion factor facility on the lane side on which the vehicle that has entered the guide route from the guide route travels (S26: YES), the process proceeds to S27. In this case, the CPU 21 predicts that at least the lane on which the vehicle that has entered from the guide route travels is likely to be congested due to the vehicle entering the congestion factor facility among the lanes of the approaching intersection road. .

  On the other hand, when it is determined that there is no congestion factor facility on the lane side where the vehicle that has entered the guide route from the guide route travels (S26: NO), the process proceeds to S28.

In S27, the CPU 21 acquires, as search target names, the name of the approaching intersection road that has been determined in S26 that there is a congestion factor facility on the traveling lane side of the vehicle, and the name of the intersection between the guide route and the approaching intersection road. Then, a combination of the acquired character string of the name of the approaching intersection road and the character string “traffic jam” is set as a search word. Similarly, a combination of the acquired character string of the name of the intersection and the character string “traffic jam” is set as a search word. For example, as shown in FIG. 13, when there is a congestion factor facility 80 on the traveling lane side of the vehicle on the approaching intersection road 76, the name of the approaching intersection road 76 and the name of the intersection 74 are acquired as search target names. Accordingly, the combination of “name of approaching intersection road 76” and “traffic jam” and the combination of “name of intersection 74” and “traffic jam” are set as search words. As the name of the approaching intersection road, if the approaching intersection road is a national road or a prefectural road, it may be a number (for example, National Route 1), a street name (for example, Meiji-dori), or an abbreviation (for example, ring 7). )
After that, based on the set search word, a search process for searching for a posted sentence including the search word from the posted sentences posted on the computer network is executed (S13).

  On the other hand, in S28, the CPU 21 determines the traffic congestion factor facility (the traffic congestion factor facility determined to be on the opposite side of the vehicle lane in S26) based on the position and map information of the traffic congestion factor facility extracted in S25. It is determined whether there is a point where the vehicle can turn at a position farther away from the intersection of the guide route and the approaching intersection road. The point where the vehicle can turn corresponds to, for example, an intersection where turning is not prohibited.

  If it is determined that there is a point where the vehicle can turn at a position farther away from the intersection of the guide route and the approaching intersection road than the congestion factor facility (S28: YES), the process proceeds to S27. In that case, the CPU 21 is likely to be congested due to a vehicle turning around and entering the congestion factor facility at least in the lane of the approaching intersection road in which the vehicle that has entered from the guide route travels. Predict.

  Then, in S27, the CPU 21 acquires, as search target names, the name of the approaching intersection road that has been determined in S28 that there is a vehicle turnable point, and the name of the guide route and the intersection of the approaching intersection road. Then, a combination of the acquired character string of the name of the approaching intersection road and the character string “traffic jam” is set as a search word. Similarly, a combination of the acquired character string of the name of the intersection and the character string “traffic jam” is set as a search word. For example, as shown in FIG. 13, when there is a traffic congestion factor facility 81 on the opposite side of the driving lane side of the approaching intersection road 72 and there is a turnable point 82 far from the traffic congestion factor facility 81 with respect to the intersection 71. In this example, the name of the approaching intersection road 72 and the name of the intersection 71 are acquired as search target names. Accordingly, the combination of “name of approaching intersection road 72” and “traffic jam” and the combination of “name of intersection 71” and “traffic jam” are set as search words.

  On the other hand, if it is determined that there is no point where the vehicle can turn at a position farther from the intersection of the guide route and the approaching intersection road than the congestion factor facility (S28: NO), of the lanes of the approaching intersection road, It is predicted that there is a low possibility of traffic jams at least in the lane in which the vehicle that has entered from the guide route travels. And it returns to S26, without setting a search word, and continues a process for the next traffic congestion factor facility.

  As described above in detail, in the posted text search system 1 according to the present embodiment, the posted text search method by the posted text search system 1, and the computer program executed in the posted text search system 1, a guide route is set in the communication terminal 7. If so, the posted message browsing request is transmitted to the posted message search server 3 (S3), and the posted message search server 3 that has received the browse request is a road that intersects the guide route and travels along the guide route. An approaching intersection road, which is a road that can be entered by the vehicle to be guided, is acquired (S23), and it is determined whether there is a congestion factor facility that is a factor that causes a traffic jam around the approaching intersection road (S26, S28). ) When it is determined that there is a congestion factor facility around the approaching intersection road, a combination of “name of the approaching intersection road” and “congestion” or “intersection of the guidance route and the approaching intersection road” A combination of “point name” and “traffic jam” is set as a search word (S27), and a post sentence including the set search word is searched from post sentences posted on the computer network (S13). Since the posted message is provided (S14), based on the congestion factor facility and the surrounding road shape, the road or the road that is highly likely to be congested among the intersecting roads that can be entered from the user's planned travel route It is possible to set the name of the intersection connected to the search word. As a result, by using the set search word, it is possible to appropriately extract only the posted text on which the information required by the user is posted from the posted text posted on the computer network. In particular, it is possible to grasp traffic information related to the user's planned travel route, more specifically, traffic information on intersection roads that affect the flow of vehicles on the planned travel route at a faster timing via posted text. It becomes possible. In addition, since it is not necessary to cause the user to input search conditions, the operability can be improved.

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 present embodiment, the posted text search server 3 executes the processes of S11 to S14 of the posted text search processing program (FIG. 6), but the posted text information management server 4 and the communication terminal 7 are partly or entirely. It is good also as a structure which performs the process of.

  In the present embodiment, the guide route set in the communication terminal 7 that has requested to view posts is transmitted from the communication terminal 7 to the posted text search server 3 as the user's planned travel route. It is good also as a structure which transmits the starting point and destination set in the communication terminal 7 instead of. In that case, the guidance route search is performed from the departure place and the destination received by the posted text search server 3. Also, routes other than the guide route may be used as the user's planned travel route. For example, a route assumed that the user moves along the road from the current position may be specified as the user's planned travel route. Further, the user's planned travel route may be specified from the user's past travel history. Furthermore, the planned travel route may be a planned travel route by a vehicle or a planned travel route by a moving means other than the vehicle (for example, a train, a bicycle, a walk, etc.).

  In the present embodiment, the combination of “name of approaching intersection road” and “congestion” and the combination of “name of intersection” and “congestion” are set as search words, respectively. Only the combination of “name” and “traffic” or only the combination of “intersection name” and “traffic” may be set as a search word. Further, a character string (for example, “congestion”) indicating a traffic situation other than “congestion” may be set as a search word instead of “congestion”.

  Further, in the present embodiment, the posted text information management server 4 as posted text information includes the posted text, the posting time when the posted text was posted, and the location information of the contributor when the posted text was posted. Although it is configured to store the contributor's ID and the like, only the posted text may be stored.

  In addition, the embodiment of the posted text search system according to the present invention has been described above. However, the posted text search system can also have the following configuration, and in that case, the following effects can be obtained.

For example, the first configuration is as follows.
The traffic congestion facility determination means determines whether there is a traffic congestion factor facility on the lane side where the vehicle that has entered from the planned travel route is around the approach intersection road, and the search target name acquisition means Is the name of the approaching intersection road or the scheduled movement when it is determined that there is a congestion factor facility on the lane side where the vehicle that has entered from the planned travel route is around the approaching intersection road. The name of the intersection between the route and the approaching intersection road is acquired as a search target name.
According to the posted text search system having the above configuration, when a lane entering the approaching intersection road from the planned travel route is highly likely to be jammed by a vehicle entering the congestion factor facility, information on the jam is posted. It is possible to appropriately extract the posted text.

The second configuration is as follows.
The traffic congestion facility determination means determines whether there is a traffic congestion factor facility in the vicinity of the approaching intersection road and on the opposite side of the lane on which the vehicle that has entered from the planned travel route with respect to the approaching intersection road travels. There is a turning point determination means for determining whether there is a turnable point on the road, and the search target name acquisition means is a vehicle that is in the vicinity of the approaching intersection road and has entered the approaching intersection road from the planned travel route If it is determined that there is a traffic congestion factor facility on the opposite side of the lane on which the vehicle is traveling and there is a point that can be turned on the approaching intersection road, the name of the approaching intersection road or the name of the intersection between the planned travel route and the approaching intersection road Is acquired as a search target name.
According to the posted text search system having the above configuration, when a lane entering the approaching intersection road from the planned travel route is likely to be jammed by a vehicle turning around and entering the congestion factor facility, information on the jam It becomes possible to appropriately extract the posted text posted.

The third configuration is as follows.
The turning point determination means determines whether or not there is a point that can be turned at a position farther from the intersection of the planned travel route and the approaching intersection road than the congestion factor facility.
According to the posted text search system having the above configuration, traffic congestion occurs on the approaching intersection road based on the positional relationship between the turnable point and the traffic congestion factor facility, taking into account the vehicle that turns and enters the traffic congestion factor facility. It becomes possible to predict whether or not. Therefore, it is possible to predict more accurately the traffic jam situation on the approaching intersection road.

The fourth configuration is as follows.
Map information acquiring means for acquiring map information and facility specifying information acquiring means for acquiring specific information that is information for specifying a congestion factor facility, and the traffic congestion facility determining means is based on the map information and the facility specifying information. Then, it is determined whether there is a congestion factor facility around the approaching intersection road.
According to the posted text search system having the above-described configuration, a large-scale commercial facility with a high ability to attract customers, a facility that has just been introduced to media such as TV and magazines, etc., cause traffic congestion on the surrounding roads. A facility that may be generated can be appropriately identified as a congestion factor facility based on the facility identification information.

1 Posting text search system 2 Posting text management center 3 Posting text search server 4 Posting text information management server 6 User 7 Communication terminal 27 Facility data

Claims (8)

A planned travel route acquisition means for acquiring a planned travel route of the moving object;
A crossing road acquisition means for acquiring an approaching crossing road that is a road that intersects the planned movement path and that is a vehicle that can travel along the planned movement path;
A traffic congestion facility determination means for determining whether there is a traffic congestion factor facility that is a facility that causes traffic congestion around the approaching intersection road;
A search target for acquiring, as a search target name, the name of the approach crossing road or the name of the intersection of the planned crossing road and the approaching crossing road when it is determined that there is the congestion factor facility around the approaching crossing road Name acquisition means;
Search condition setting means for setting a search word from a character string of the search target name acquired by the search target name acquisition means;
A posted text search system, comprising: search means for extracting a posted text corresponding to the search word set by the search condition setting means from posted text posted on a computer network. The congestion facility determination means determines whether or not there is the congestion factor facility on the lane side around which the vehicle that has entered from the planned travel route is around the approach intersection road,
When the search target name acquisition means determines that there is the congestion factor facility in the vicinity of the approaching intersection road and on the lane side on which the vehicle that has entered from the planned travel route with respect to the approaching intersection road travels The posted text search system according to claim 1, further comprising: acquiring the name of the approaching intersection road or the name of the intersection between the planned travel route and the approaching intersection road as the search target name. Whether the traffic congestion facility determining means is around the approaching intersection road, and whether there is the traffic congestion factor facility on the opposite side of the lane side on which the vehicle that has entered from the planned travel route travels with respect to the approaching intersection road. Judgment,
A turning point determination means for determining whether or not there is a turnable point on the approaching intersection road,
The search target name acquisition means is the vicinity of the approaching intersection road, and the congestion factor facility is on the opposite side of the lane side on which the vehicle that has entered from the planned travel route travels with respect to the approaching intersection road, and When it is determined that there is a turnable point on the approaching intersection road, the name of the approaching intersection road or the name of the intersection of the planned travel route and the approaching intersection road is acquired as the search target name. The posted text search system according to claim 1, wherein the posted text search system is characterized in that:   The turning point determination means determines whether or not there is a point that can be turned at a position farther from the intersection of the planned travel route and the approaching intersection road than the congestion factor facility. The posted text search system described. Map information acquisition means for acquiring map information;
Facility specifying information acquisition means for acquiring facility specifying information that is information for specifying the congestion factor facility,
5. The traffic congestion facility determining means determines whether or not there is the traffic congestion factor facility around the approaching intersection road based on the map information and the facility specifying information. The posted text search system described in any one. A planned travel route acquisition means for acquiring a planned travel route of the moving object;
A crossing road acquisition means for acquiring an approaching crossing road that is a road that intersects the planned movement path and that is a vehicle that can travel along the planned movement path;
A traffic congestion facility determination means for determining whether there is a traffic congestion factor facility that is a facility that causes traffic congestion around the approaching intersection road;
A search target for acquiring, as a search target name, the name of the approach crossing road or the name of the intersection of the planned crossing road and the approaching crossing road when it is determined that there is the congestion factor facility around the approaching crossing road Name acquisition means;
Search condition setting means for setting a search word from a character string of the search target name acquired by the search target name acquisition means;
A posted text search apparatus, comprising: search means for extracting a posted text corresponding to the search word set by the search condition setting means from posted text posted on a computer network. A planned travel route acquisition step for acquiring a planned travel route of the moving object;
An intersecting road acquisition step of acquiring an approaching intersection road that is a road that intersects the planned movement route and that is a vehicle that can travel on the planned movement route from the planned movement route;
A traffic congestion facility determination step for determining whether or not there is a traffic congestion factor facility that is a facility that causes traffic congestion around the approaching intersection road,
A search target for acquiring, as a search target name, the name of the approach crossing road or the name of the intersection of the planned crossing road and the approaching crossing road when it is determined that there is the congestion factor facility around the approaching crossing road A name acquisition step;
A search condition setting step for setting a search word from a character string of the search target name acquired by the search target name acquisition step;
A posted text search method, comprising: a search step for extracting a posted text corresponding to the search word set by the search condition setting step from posted text posted on a computer network. On the computer,
A planned movement route acquisition function for acquiring a planned movement route of a moving object;
A crossing road acquisition function for acquiring an approaching crossing road that is a road that intersects the planned movement route and that is a vehicle that can travel from the planned movement route.
A traffic congestion facility determination function for determining whether or not there is a traffic congestion factor facility that is a facility that causes traffic congestion around the approaching intersection road;
A search target for acquiring, as a search target name, the name of the approach crossing road or the name of the intersection of the planned crossing road and the approaching crossing road when it is determined that there is the congestion factor facility around the approaching crossing road Name acquisition function,
A search condition setting function for setting a search word from a character string of the search target name acquired by the search target name acquisition function;
A search function for extracting a posted sentence corresponding to the search word set by the search condition setting function from posted sentences posted on a computer network;
A computer program characterized by realizing the above.

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