JP2019028916A - Attention calling device and attention calling method - Google Patents

Abstract

To provide "an attention calling device and an attention calling method" which enable a driver to accurately determine a degree of attention based on what type of pedestrian actually exists in the vicinity of a road on which the vehicle travels.SOLUTION: An attention calling device 2, for each individual, stores entry history information indicating a history of entering a road section at a place other than a pedestrian crossing in the past, and determines, for each individual, a tendency to enter a road section at a place other than the pedestrian crossing. Then, the attention calling device 2 acquires information indicating a current position of the individual from a mobile terminal 4, identifies the individual located in the vicinity of one road section, and determines an approaching tendency of each identified individual as an attempt to alert a driver of a vehicle about the pedestrian in the one road section in a reflected manner.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an alerting device and an alerting method, and is particularly suitable for use in an alerting device and an alerting method for alerting a pedestrian to a driver who drives a vehicle.

  2. Description of the Related Art Conventionally, an alerting device that alerts a pedestrian to a driver who drives a vehicle is known. For example, in the past, areas where the driver should pay attention to pedestrians, such as areas including school roads for elementary schools, are determined in advance, and when the alert device enters the predetermined area, On the other hand, a technique for calling attention (hereinafter referred to as “prior art 1”) is known. In addition, for example, conventionally, a warning device displays the position of a pedestrian in the vicinity of a road on a map while the vehicle is running, and makes the driver recognize the position of the pedestrian, thereby paying attention to the driver. A technique to be evoked (hereinafter referred to as “prior art 2”) is known. Patent Document 1 discloses an accident prediction that predicts and notifies an area that may cause an accident with a passer-by when the vehicle enters and passes through an intersection based on a passer-by and a traffic history of the vehicle. A notification device is described.

JP 2010-211301 A

  However, with the conventional technology, the driver cannot accurately determine how much attention should be paid based on what kind of pedestrians are actually near the road on which the vehicle is driving. There was a problem. For example, in the above-described prior art 1, the driver is alerted with a trigger that the vehicle has entered a specific area. For this reason, for example, when the specific area is an area including a school road of an elementary school, the driver can recognize that there is a possibility that an elementary school student enters the road that is running, It is possible to drive with high attention based on recognition. However, in Prior Art 1, since the driver is uniformly alerted by triggering the entry into the specific area regardless of the situation of the pedestrian who is actually in the vicinity of the road at the time of driving, There was a problem that it was not possible to accurately determine how much attention should be paid based on what kind of pedestrians are actually in the vicinity of the road on which they are traveling.

  Further, in the above-described related art 2, the driver can grasp the number of pedestrians in the vicinity of the road and the position of each pedestrian while the vehicle is traveling. However, some pedestrians do not enter the road at places other than the pedestrian crossing, and some people enter the road at places other than the pedestrian crossing. Only the position of pedestrians in the vicinity of the road is displayed on the map, and the driver should be aware of how much pedestrians are in the vicinity of the road on which the vehicle is traveling. It is not possible to accurately determine whether or not to pay.

  The present invention has been made to solve such a problem, and when a driver is alerted to a pedestrian about crossing a road, the driver can The purpose is to make it possible to accurately determine the degree of attention based on what kind of pedestrians are actually in the vicinity.

  In order to solve the above-described problems, the alerting device according to the present invention stores, for each individual, entry history information indicating a history of an individual entering a road section in a place other than a pedestrian crossing in the past, Based on the entry history information, an entry tendency is determined for each individual, which is an individual's tendency to enter a road section at a place other than a pedestrian crossing. In addition, the alerting device according to the present invention acquires personal location information indicating the current location of the individual from a terminal carried by the individual, and based on the acquired personal location information, in the vicinity of one road section. The person who is located is specified, and the driver's driver is alerted about the pedestrian in the one road section in a manner reflecting the approach tendency of each specified individual.

  The degree of attention that the driver should pay when driving is influenced by the “prone to enter the road section without using a pedestrian crossing” of a pedestrian who actually exists in the vicinity of the road section on which the vehicle travels. If there is a pedestrian who has a strong tendency to enter the road section without using a pedestrian crossing, it is necessary to drive considering the possibility that the pedestrian will jump out on the road on which the vehicle runs, This is because it is necessary to drive with high attention. Based on the above, according to the present invention configured as described above, an approach tendency that is a tendency to enter a road section at a place other than a pedestrian crossing is determined for each individual, and a driver of a vehicle traveling on one road section is determined. When alerting is performed, alerting is performed in a manner reflecting an approach tendency of an individual who is actually in the vicinity of the one road section. For this reason, the driver can receive a warning reflecting the approach tendency of each person who is actually in the vicinity of the one road section, and the degree of attention to be paid when driving based on the approach tendency of each person Can be determined accurately.

It is a figure which shows the structural example of the alerting system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the function structural example of the vehicle-mounted apparatus and portable terminal which concern on 1st Embodiment of this invention. It is a figure which shows the information contained in personal relevant information. It is a block diagram which shows the function structural example of the alerting device which concerns on 1st Embodiment of this invention. It is a figure which shows node data and link data. It is a figure which shows an example of the content of the approach history information database which concerns on 1st Embodiment. It is a figure which shows the result of carrying out the map matching of the user position which personal position information shows on a road map. It is a figure which shows a 1st range. It is a figure which shows an example of the screen which the vehicle-mounted apparatus which concerns on 1st Embodiment of this invention displays. It is a flowchart which shows an example of the process by the vehicle equipment and alerting device which concern on 1st Embodiment of this invention. It is a block diagram which shows the function structural example of the alerting apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows an example of the content of the approach history information database which concerns on 2nd Embodiment. It is a block diagram which shows the function structural example of the alerting apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the function structural example of the alerting apparatus which concerns on 4th Embodiment of this invention. It is a figure which shows an example of the screen which the vehicle-mounted apparatus which concerns on 4th Embodiment of this invention displays. It is a block diagram which shows the function structural example of the alerting apparatus which concerns on 5th Embodiment of this invention. It is a figure which shows an example of the content of the access history information database classified by attribute which concerns on 5th Embodiment.

<First Embodiment>
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of an alerting system 1 according to the present embodiment. The alerting system 1 is a system for alerting a driver who drives a vehicle about a pedestrian. As shown in FIG. 1, an alerting device 2, an in-vehicle device 3, and a mobile terminal 4 are provided. I have. Each of these apparatuses can access a network N configured to include the Internet, a telephone network, and other communication networks. The functional configuration and processing of these devices will be described later.

  FIG. 2 is a block diagram illustrating a functional configuration example of the in-vehicle device 3 and the mobile terminal 4.

  The in-vehicle device 3 is a device provided in the vehicle, and has a function of detecting the current position of the vehicle (hereinafter referred to as “own vehicle position”) and a function of displaying a map in which the vehicle position is clearly indicated. Yes. The in-vehicle device 3 is, for example, a navigation device. However, the in-vehicle device 3 does not have to be a device fixed to the vehicle, and may be a mobile terminal (smart phone, tablet PC, notebook PC, or the like) owned by the passenger of the vehicle. That is, the in-vehicle device 3 may be any device that can alert a driver about a pedestrian in a manner described later based on information received from the alert device 2.

  As shown in FIG. 2, a display 5 is connected to the in-vehicle device 3. The display 5 is a display device having a function of displaying an image such as a liquid crystal display panel or an organic EL panel. The display 5 is provided at a position where the driver can visually recognize at least the display area such as the center of the dashboard of the vehicle. Moreover, the vehicle-mounted apparatus 3 is provided with the vehicle-mounted apparatus side communication part 10, the own vehicle position detection part 11, and the map screen display part 12 as the function structure. The on-vehicle device 3 includes a map data storage unit 13.

  Each of the functional blocks 10 to 12 can be configured by any of hardware, DSP (Digital Signal Processor), and software. For example, when configured by software, each of the functional blocks 10 to 12 is actually configured by including a computer CPU, RAM, ROM, and the like, and is stored in a recording medium such as RAM, ROM, hard disk, or semiconductor memory. Is realized by operating. The same applies to other functional blocks described later.

  The map data storage unit 13 stores map data. Map data includes data used for drawing a map, such as data used for drawing a background, data used for drawing a road, data used for drawing a character string such as a road name, an intersection name, and a place name. It is out.

  The in-vehicle device side communication unit 10 accesses the network N according to a predetermined communication standard and communicates with devices (including the alerting device 2) connected to the network N. In the present embodiment, the in-vehicle device 3 has a function of accessing the network N, but the in-vehicle device 3 does not have the function but communicates with a terminal having a function of accessing the network N, and through the terminal. The network N may be accessed.

  The own vehicle position detection unit 11 detects the own vehicle position based on GPS, an input from a gyro sensor, an acceleration sensor, a vehicle speed sensor, and the like (not shown) and information included in the map data. Any method may be used to detect the vehicle position.

  The map screen display unit 12 displays a map around the vehicle position (hereinafter referred to as “map screen”) on the display 5 with the vehicle position clearly indicated. Further, the map screen display unit 12 displays predetermined information on the map screen based on an instruction from the alerting device 2, and alerts the driver about the pedestrian. The processing of the map screen display unit 12 when displaying information related to alerting about pedestrians and the contents of the information will be described later.

  The portable terminal 4 is a terminal carried by the user for the purpose of transmitting personal related information (described later) about the user to the alerting device 2 while the user is walking. In the present embodiment, a person who carries the mobile terminal 4 is particularly expressed as a “user” and is distinguished from a driver of the vehicle. The mobile terminal 4 may be any terminal that can be carried by the user, and is, for example, a mobile phone or a wristwatch type wearable terminal. As will be described later, the alert system 1 according to the present embodiment also contributes to safe walking of the user of the mobile terminal 4. In light of this, as an example, the portable terminal 4 is given by the related person to a child of elementary school grade or an elderly person who has a decline in cognition. In the present embodiment, “walking” means that the user moves on foot or by bicycle outdoors.

  As shown in FIG. 2, the mobile terminal 4 includes a mobile terminal side communication unit 20, a personal position detection unit 21, a movement direction detection unit 22, a time measurement unit 23, and a personal related information transmission unit 24 as functional blocks. . The mobile terminal 4 has a function of transmitting personal related information (described later) by turning on the power while a user is walking and starting a predetermined application. Thereby, while a user is walking, personal related information is transmitted from time to time by the portable terminal 4.

  The mobile terminal side communication unit 20 accesses the network N according to a predetermined communication standard and communicates with devices (including the alerting device 2) connected to the network N.

  The personal position detection unit 21 detects the current position of the user carrying the mobile terminal 4 (hereinafter referred to as “user position”) based on an input from a GPS (not shown) or the like in the cycle S1, and indicates the personal position. The position information is output to the individual related information transmission unit 24. In the present embodiment, the user position is expressed by a combination of longitude and latitude. Any method may be used for the personal position detection unit 21 to detect the user position, and a sensor other than GPS may be used to detect the user position.

  The movement direction detection unit 22 detects the movement direction (hereinafter referred to as “user movement direction”) of the user carrying the portable terminal 4 in a cycle S1, based on GPS (not shown), input from an acceleration sensor, or the like. The moving direction information indicating the moving direction of the user is output to the individual related information transmitting unit 24. In the present embodiment, the user movement direction is expressed by a combination of an azimuth angle (an angle in the horizontal plane with north being “0 °”) and the magnitude of acceleration. Any method may be used for the movement direction detection unit 22 to detect the user movement direction, and sensors other than the GPS and acceleration sensors may be used to detect the user movement direction.

  The time measuring unit 23 measures the time by a time measuring means such as an RTC (real-time clock), and outputs the measurement time information indicating the time at that time to the individual related information transmitting unit 24 in the cycle S1.

  The personal related information transmitting unit 24 generates personal related information in the cycle S1, controls the mobile terminal side communication unit 20, and transmits the generated personal related information to the alerting device 2. Hereinafter, the processing of the personal related information transmitting unit 24 will be described in detail.

  FIG. 3 is a diagram showing information included in the personal related information. As shown in FIG. 3, the personal related information includes a user ID, personal location information, movement direction information, and measurement time information. The user ID is identification information for identifying a user who carries the mobile terminal 4 and is registered in the mobile terminal 4 in advance. The personal-related information transmission unit 24 has a user ID registered in advance, personal position information input from the personal position detection unit 21 in the cycle S1, movement direction information input from the movement direction detection unit 22, and input from the time measuring unit 23. Personal-related information is generated based on the measurement time information.

  After generating the personal related information, the personal related information transmitting unit 24 controls the mobile terminal side communication unit 20 to transmit the generated personal related information to the alerting device 2. Information related to communication required to transmit the personal attention information such as the address of the alerting device 2 and the protocol used for communication to the alerting device 2 is registered in advance in the mobile terminal 4.

  As a result of the above processing being performed by each functional block of the mobile terminal 4, while the user is walking, personal related information (FIG. 3) is periodically transmitted from the mobile terminal 4 to the alerting device 2 in the cycle S 1. Sent.

  FIG. 4 is a block diagram illustrating a functional configuration example of the alerting device 2. The alerting device 2 is a server connected to the network N. In FIG. 1 and FIG. 4, the alerting device 2 is represented by one block, but this does not mean that the alerting device 2 is configured by a single server device. The alerting device 2 may be composed of a plurality of server devices, or may be a part of a predetermined system. That is, the alerting device 2 only needs to have a function to be described later, and may take any form.

  As shown in FIG. 4, the alerting device 2 includes an alerting device-side communication unit 30, a personal related information acquisition unit 31, a history update unit 32, an approach tendency determination unit 33, and an alerting unit 34 as its functional configuration. ing. The alerting device 2 includes a road data storage unit 40, an individual related information storage unit 41, and an entry history storage unit 42.

  The alerting device side communication unit 30 accesses the network N according to a predetermined communication standard, and communicates with devices (including the in-vehicle device 3 and the portable terminal 4) connected to the network N.

  The road data storage unit 40 stores road data 401. The road data 401 includes a node table TB1 related to nodes and a link table TB2 related to links. A node is a point defined for each intersection or other node in the road network, and a link is a line defined for each road section between nodes.

  The node table TB1 is a table having node data for each node on the map. FIG. 5A illustrates a part of information included in node data. As shown in FIG. 5A, the node data includes a node ID, node position information, connection entry link information, and connection exit link information.

  The node ID is identification information for identifying the node. The node position information is information indicating the position of the node on the map. The connection entry link information is information indicating a link ID (described later) of a link connected to a node and having a direction of entering the node as a traveling direction. The connection / exit link information is information indicating a link ID of each link connected to a node and having a direction in which the user leaves the node as a traveling direction. The information exemplified as the information included in the node data is a part of the information. In addition to the exemplified information, the node data includes lane information regarding the lane provided at the intersection when the node is an intersection. And other information about the node such as node attributes.

  The link table TB2 is a table having link data for each link on the map. FIG. 5B is a diagram illustrating a part of information included in the link data. As shown in FIG. 5B, one record of the link table TB2 includes link ID, link length information, link orientation information, link type information, lane number information, sidewalk presence / absence information, It has 1 node ID and 2nd node ID.

  The link ID is identification information for identifying the link. The link length information is information indicating the link length. The link azimuth information is information indicating the azimuth of the link by an azimuth angle (an angle in a horizontal plane with north being “0 °”). The link type information is information indicating the type of road section corresponding to the link. The lane number information is information indicating the number of lanes in the road section corresponding to the link. The sidewalk presence / absence information is information indicating the presence / absence of a sidewalk in the road section corresponding to the link. The first node ID is information indicating the node ID of a node connected to one end of the link. The second node ID is information indicating the node ID of the node connected to the other end of the link.

  Note that the information exemplified as the information included in the link data is a part of the information, and the link data includes other information related to the link such as the link cost in addition to the exemplified information.

  The personal related information storage unit 41 stores a personal related information database DB1 for each user. The personal related information database DB1 associated with each user is stored in the personal related information storage unit 41 in a state associated with the user ID of each user. The contents of the personal related information database DB1 will be described later.

  The personal related information acquisition unit 31 controls the alerting device side communication unit 30 to receive and acquire personal related information transmitted by the mobile terminal 4. The personal related information acquiring unit 31 stores the acquired personal related information in association with the user ID included in the acquired personal related information in the personal related information database DB1 stored in the personal related information storage unit 41. Register in database DB1. Hereinafter, the processing of the personal related information acquisition unit 31 will be described in detail.

  As described above, personal related information is transmitted to the alerting device 2 from a plurality of different mobile terminals 4 as needed. The personal related information acquisition unit 31 performs the following processing for each acquired personal related information. That is, the personal related information acquisition unit 31 recognizes the user ID included in the personal related information when acquiring the personal related information. Next, the personal related information acquisition unit 31 specifies a database associated with the recognized user ID in the personal related information database DB1. Next, the personal related information acquisition unit 31 additionally registers the personal related information in the specified personal related information database DB1. As a result of the above processing performed by the individual related information acquisition unit 31, the personal related information DB 1 related to one user stores the personal related information transmitted by the portable terminal 4 carried by the one user in a cumulative manner. It will be in the state.

  The entry history storage unit 42 stores an entry history information database DB2 for each road section in which a link is defined. The approach history information database DB2 related to each road section is stored in the approach history storage unit 42 in a state associated with the link ID of each road section.

  FIG. 6 is a diagram schematically showing an example of the contents of the entry history information database DB2 related to one road section. As shown in FIG. 6, the approach history information database DB2 has a record for each user. As shown in FIG. 6, each record of the entry history information database DB2 has first time zone information, second time zone information, and third time zone information. Hereinafter, when the first time zone information, the second time zone information, and the third time zone information are not distinguished, they are simply referred to as “time zone information”.

  As shown in FIG. 6, the time zone information includes approach history information and approach tendency information. The entry history information includes entry number information and non-entry number information. As described above, the entry history storage unit 42 stores entry history information for each time zone for each road section for each individual. Each information included in one record of the entry history information database DB2 will be described later.

  The history update unit 32 determines whether or not the one user has entered the road section at a place other than the pedestrian crossing based on the personal position information and movement direction information of the one user (individual). Based on this, the entry history information stored in the entry history storage unit 42 (as described above, the combination of the entry number information and the non-entry number information) is updated. Hereinafter, the process of the history update unit 32 will be described in detail.

  As described above, the mobile terminal 4 transmits personal related information including personal position information and movement direction information to the alerting device 2 in a cycle S1 while the user carrying the mobile terminal 4 is walking. In addition, in the personal related information database DB1 related to one user, personal related information transmitted in the past by the mobile terminal 4 carried by the single user is cumulatively stored. Then, the history update unit 32 executes the following processing for each user based on the personal related information cumulatively stored in the personal related information database DB1 during the latest fixed period for each fixed period. The certain period is, for example, one day.

  Hereinafter, a process that the history update unit 32 executes with one user as a processing target will be described. It is assumed that the personal related information is sufficiently stored in the personal related information database DB1 related to the one user during the most recent fixed period.

  First, the history update unit 32 refers to the personal related information database DB1 related to one user to be processed, and based on the measurement time information of each record, the personal information accumulated in the personal related information database DB1 is stored. Among the related information, the personal related information stored during the most recent fixed period is acquired.

  Next, the history update unit 32 executes the following processing based on the acquired personal related information. In other words, the history update unit 32 uses the road data 401 stored in the road data storage unit 40 to generate a personal link to a road network (hereinafter referred to as “road map”) constructed by a combination of links and nodes. Each of the user positions indicated by the personal position information included in the information is map-matched.

  FIGS. 7A and 7B are diagrams schematically showing the results of map matching the user position indicated by the personal position information included in the personal related information on the road map in a mode suitable for explanation. It is. In each figure of FIG. 7, the azimuth follows the azimuth shown in the figure. In the road map illustrated in each drawing of FIG. 7, a link LK1 extending from north to south is connected to the node ND1, a link LK2 extending from east to west is connected to the east side, and a link LK3 extending from north to south is connected to the north side. A link LK4 extending from east to west is connected to the west side.

  Further, in each drawing of FIG. 7, points P1 to P6 are points obtained by plotting the results of map matching the user positions indicated by the personal position information on the road map. The points P1 to P6 are points based on the personal position information transmitted from the point P1 toward the point P6 later in time (the time indicated by the corresponding measurement time information is later in time). Further, for each of the points P1 to P6, the arrows Y1 to Y6 extending from the respective points indicate “the moving direction of the user and the magnitude of acceleration” indicated by the moving direction information included in the personal related information corresponding to each point. ". Regarding the arrows Y1 to Y6, the direction of the arrow indicates the moving direction of the user, and the length from the base point to the tip of the arrow indicates the magnitude of acceleration.

  In the following description, when a user enters a road section at a place other than a pedestrian crossing is referred to as “road section entry”. Road segment approach includes crossing a road segment at a location that is not a pedestrian crossing. A pedestrian may intentionally cross a road section at a place other than a pedestrian crossing, for example, when it is intended to take a shortcut or it is complicated to move to a pedestrian crossing. The road section approach includes a pedestrian entering a region where the vehicle travels, although the road section is not crossed at a place that is not a pedestrian crossing. Elementary school children, younger children, and older people who are experiencing a decline in cognition may take irregular actions and may enter the road section without intending to cross the road section.

  The history update unit 32 sets each link (road section) with which the user position is matched as a target for determining whether or not the road section has entered. In the example of FIG. 7, the user position is matched with the link LK1 and the link LK2. In this case, the history update unit 32 sets the road sections corresponding to the links LK1 and LK2 as targets for determining whether or not the road section has entered.

  When determining whether or not the road section corresponding to the one link has entered the road section, the history update unit 32 matches the user positions matched to the one link (however, the nodes at both ends of the one link are matched). The following determination is made for each of the user positions (excluding the user position). That is, the history update unit 32 determines whether the moving direction at the matched user position belongs to the first range and the magnitude of the acceleration is equal to or larger than the first threshold based on the moving direction information included in the corresponding personal related information. Determine whether or not.

  FIG. 8 is a diagram illustrating the first range. As shown in FIG. 8, the first range is a range of an angle θ1 centered on a half line T1a (the angle between the link and the half line T1a is a right angle) extending rightward from the user position with respect to the direction of the link, and The range of the angle θ1 is centered on a half line T1b extending from the user position toward the left with respect to the direction of the link (the angle between the link and the half line T1b is a right angle).

  When the moving direction at the matched user position belongs to the first range and the magnitude of the acceleration is not less than the first threshold, the user has sufficient momentum in the direction intersecting with the direction in which the road section extends at the user position. It can be estimated that the vehicle has walked at a speed and has crossed the road section at the position corresponding to the user position or entered the area where the vehicle travels in the road section. Based on this, when the moving direction at the matched user position belongs to the first range and the magnitude of the acceleration is greater than or equal to the first threshold value, the history update unit 32 has entered the road section at the user position. Is determined. The first range and the first threshold value are appropriately set based on prior tests and simulations from the viewpoint of being used as a threshold value when determining whether or not a road section has entered.

  When the history update unit 32 determines whether or not there is a road section entry for the road section corresponding to one link, at least one road section entry has occurred in the user position matched with the one link. If there is a determined user position (a user position whose movement direction belongs to the first range and whose acceleration is greater than or equal to the first threshold value), there is no road section entry in the road section corresponding to the one link. It is determined that On the other hand, if there is no user position determined that the road section entry has occurred in any of the user positions matched with the one link, the history update unit 32 selects the road section corresponding to the one link. It is determined that there was no road segment approach.

  The pedestrian crossing is usually provided at a position corresponding to a node on the road map. Therefore, the user position based on the personal related information transmitted by the portable terminal 4 when the user is crossing the pedestrian crossing is matched with the node on the road map. Therefore, when determining whether or not there is a road section entry in a road section corresponding to one link, by performing the determination based on the user position excluding the user positions matched to the nodes at both ends of the one link It is possible to accurately determine the approach to the road section at a place other than the pedestrian crossing.

  In this regard, the following configuration may be used. That is, when the road data 401 includes information indicating the position of the pedestrian crossing, the history update unit 32 determines the position of the pedestrian crossing when determining whether or not the road section corresponding to one link has entered the road section. The position of the pedestrian crossing in the road section is recognized based on the information indicating that. Then, the history update unit 32 determines whether or not a road section approach has occurred at each user position, except for an area corresponding to the position of the pedestrian crossing in the one link. According to this configuration, it is possible to appropriately determine whether or not a road section has entered the road section corresponding to one link by suitably using the fact that the road data 401 includes information indicating the position of the pedestrian crossing.

  Moreover, the following structures may be sufficient. That is, when the road data 401 does not include information indicating the position of the pedestrian crossing but includes information indicating the position of the traffic light, the history update unit 32 determines the road section for the road section corresponding to one link. When determining whether or not there is an approach, the position of the traffic light provided corresponding to the road section is recognized based on the information indicating the position of the traffic light. Then, the history updating unit 32 determines whether or not a road section approach has occurred at each user position, except for an area corresponding to the position of the traffic light on the one link. Here, in the road section, the pedestrian crossing is often provided at a position corresponding to the traffic light. Based on this, according to the above configuration, it is preferable to appropriately use the fact that the road data 401 includes the information indicating the position of the traffic light and appropriately determine whether or not the road section corresponding to one link has entered the road section. Can be judged.

  For example, when the link LK1 in FIG. 7A is a target link for determining whether or not a road section has entered, the history update unit 32 executes the following process. In other words, the history update unit 32 sets the movement direction of the user at each position within the first range for each of the points P1 to P4 except for the point P5 matched with the node ND1 among the points matched with the link LK1. And whether or not the magnitude of the acceleration is greater than or equal to a first threshold value is determined. In the example of FIG. 7A, the history update unit 32 determines that “the user's moving direction at each position belongs to the first range and the magnitude of the acceleration is greater than or equal to the first threshold value for all of the points P1 to P4. It is determined that it is not. Therefore, the history update unit 32 determines that there is no road section entry in the road section corresponding to the link LK1.

  For example, when the link LK1 in FIG. 7B is a target link for determining whether or not there is a road section entry, the history update unit 32 executes the following process. That is, for each of the points P1 to P4 matched with the link LK1, the history updating unit 32 determines whether the user's moving direction at each position belongs to the first range and the magnitude of the acceleration is equal to or greater than the first threshold value. Determine whether. In the example of FIG. 7 (B), the history update unit 32 has “the user's moving direction at each position belongs to the first range and the magnitude of the acceleration is equal to or greater than the first threshold” for the point P2, It is determined that a road section approach has occurred at point P2. In addition, the history update unit 32 determines that the other points P1, P3, and P4 are “the user's moving direction at each position belongs to the first range, and the magnitude of the acceleration is not equal to or greater than the first threshold”. Therefore, the history update unit 32 determines that the road section has entered the road section corresponding to the link LK1.

  As described above, the history update unit 32 determines whether or not a road section has been entered for each link (road section) with which the user position is matched. Thereafter, the history update unit 32 determines, for each of the road sections that are subject to the determination of the presence or absence of the road section entry, corresponding entry history information (entry number information and non-entry number information) according to the presence or absence of the road section entry. Update).

  Hereinafter, the process of the history update unit 32 when the corresponding entry history information is updated in accordance with the presence or absence of road section entry in one road section by one user will be described. First, the history update unit 32 calculates the time when the user walks in the vicinity of the one road section based on the measurement time information included in the personal related information corresponding to the user position matched with the one road section. Identify. Next, the history update unit 32 specifies the time zone to which the specified time belongs (hereinafter referred to as “specific time zone”). In the present embodiment, the time zone is a first time zone corresponding to morning (for example, a time zone from 6 am to 10 am) and a second time zone corresponding to noon (for example, 10 am to 4 pm). Time zone) and a third time zone corresponding to night (for example, a time zone from 4 pm to 6 am on the next day). The first time zone information described above is information corresponding to the first time zone, the second time zone information is information corresponding to the second time zone, and the third time zone information is the third time zone. Information corresponding to the band.

  Next, the history update unit 32 specifies the entry history information database DB2 associated with the link ID corresponding to the one road section among the entry history information database DB2 stored in the entry history storage unit 42. Next, the history updating unit 32 identifies a record having the user ID of the one user among the identified records of the entry history information database DB2. Next, when the history update unit 32 determines that the road section has entered the one road section, the history update unit 32 sets the value of the number of times of entry information of the time zone information corresponding to the specific time zone among the time zone information of the specified record. Increase by "1". On the other hand, when the history update unit 32 determines that there is no road section entry for the one road section, the value of the non-entry number information of the time zone information corresponding to the specific time zone among the time zone information of the specified record. Is increased by “1”. Note that the initial value of the entry number information and the non-entry number information is “0”, respectively.

  As a result of the above processing performed by the history update unit 32, in the entry history information database DB2 related to one road section, the value of the number of times of entry related to one time zone of one user is the value in the one time zone. This indicates the number of times a road section has been entered when the one user has passed the vicinity of one road section, and the value of the non-entry number information indicates the vicinity of the one road section in the one time zone. When the user passes, the number of times that the road section entry is not performed is shown.

  Now, the approach tendency determination unit 33 shown in FIG. 4 is based on one user's entry history information (combination of entry number information and non-entry number information). The approach tendency which is the tendency to enter (the tendency to enter the road section) is determined for each time zone. Hereinafter, the process of the approach tendency determination part 33 in the case of determining the approach tendency corresponding to one time slot | zone is demonstrated.

  First, the approach tendency determination unit 33 sets one record in the approach history information database as a processing target at a predetermined timing. For example, when the entry number information or the non-entry number information corresponding to one time zone of a record is updated by the history update unit 32, the entry tendency determination unit 33 sets the record as a processing target. The approach tendency determination unit 33 acquires the entry number information and the non-entry number information corresponding to one time zone of the record to be processed. Next, the approach tendency determination unit 33 calculates the ratio of the approach number information to the “total value of the approach number information and the non-entry number information” (hereinafter referred to as “road section approach ratio”). For example, in the case of the first record of the entry history information database illustrated in FIG. 6, based on the entry number information and the non-entry number information corresponding to the first time zone (entrance number information: 3, non-entry number: 2) The road segment approach ratio calculated as follows is “60%”.

  Here, the road section entry ratio is the ratio of the number of times the user has entered the road section at a place other than the pedestrian crossing with respect to the number of times the user has walked in the vicinity of the road section. Therefore, the higher the road section entry ratio related to one road section, the stronger the user tends to enter the one road section at a place other than the pedestrian crossing, and the smaller the road section entry ratio, the more the user The tendency to enter the one road section at a place other than is weak.

  Next, the approach tendency determination unit 33 determines an approach tendency based on the calculated road segment approach ratio. In this embodiment, the approach tendency is represented by three levels according to the strength of the tendency to enter the road section at a place other than the pedestrian crossing. Specifically, the approach tendency includes a strong level indicating that a tendency to enter a road section at a place other than a pedestrian crossing, a weak level indicating that the tendency is weak, a strong level and a weak level indicating that the tendency is weak. It is represented by a medium level indicating that it is an intermediate level. When determining the approach tendency, the approach tendency determining unit 33 determines that the approach tendency is a strong level when the road section approach ratio is equal to or greater than a threshold T1 (eg, “80%”), and the road section approach ratio is smaller than the threshold T1. When the threshold value T2 (for example, “20%” when the threshold value T1 is “80%”) is less than the threshold value, the approach tendency is determined to be a weak level. Is determined to be a medium level.

  After determining the approach tendency, the approach tendency determination unit 33 updates the value of the corresponding approach tendency information to a value indicating the determined approach tendency (strong level, medium level, or weak level). As a result of the above processing performed by the approach tendency determination unit 33, the value of the approach tendency information of each record in each approach history information database DB2 reflects the number of times of entry information and the number of times of non-entry information updated by the history update unit 32. Value.

  Now, the alerting unit 34 shown in FIG. 4 identifies an individual located in the vicinity of one road section based on the personal location information acquired by the personal related information acquisition unit 31, and the approach tendency of each identified individual In a manner reflecting the above, the driver of the vehicle is alerted regarding the pedestrian in the one road section. In particular, the alerting unit 34 according to the present embodiment identifies an individual located in the vicinity of one road section based on the personal position information, and reflects the approach tendency of the identified individual for the one road section. In this manner, the driver of the vehicle is alerted regarding the pedestrian in the one road section. Furthermore, the alerting unit 34 according to the present embodiment identifies an individual located in the vicinity of one road section based on the personal position information, and the one corresponding to the time zone to which the current time of each identified individual belongs. In a manner that reflects the approach tendency of the road section, the vehicle driver is alerted about the pedestrian in the one road section. Hereinafter, processing of the alerting unit 34 will be described later.

  Here, the in-vehicle device 3 has a warning function as a function. The driver (which may be another passenger) can switch on / off the alert function. When the alerting function is turned on by the driver, the map screen display unit 12 of the in-vehicle device 3 transmits information indicating that the alerting function is turned on to the alerting device 2. The map screen display unit 12 alerts information indicating the vehicle position detected by the vehicle position detection unit 11 (hereinafter referred to as “vehicle position information”) at a predetermined cycle while the alert function is on. Transmit to device 2. Hereinafter, it is assumed that the alerting function of one in-vehicle device 3 is turned on, and processing of the alerting unit 34 when the vehicle position information is received from the one in-vehicle device 3 will be described.

  First, the alerting unit 34 receives the vehicle position information via the alerting device side communication unit 30. Next, the alerting unit 34 refers to the road data 401 and specifies a link (hereinafter referred to as “vehicle position peripheral link”) existing around the vehicle position indicated by the vehicle position information. Next, the alerting unit 34 refers to the personal related information database DB1 stored in the personal related information storage unit 41, and identifies the user ID of the user located in the vicinity of the vehicle position peripheral link for each vehicle position peripheral link. To do.

  The process for specifying the user ID of a user located in the vicinity of one vehicle position peripheral link will be described. As described above, the personal related information of each user is accumulated in the personal related information database DB1 of each user. Is memorized. The personal related information includes personal position information and measurement time information. Based on this, the alerting unit 34 sets the current time (including the time close to the current time) based on the personal position information and the measurement time information included in the personal related information stored in each personal related information database DB1. The user ID of the user located in the vicinity of the vehicle position peripheral link is specified. The vicinity of the vehicle position peripheral link is, for example, an area within a range of 10 meters from the vehicle position peripheral link.

  After identifying the user ID of the user located in the vicinity of the vehicle position peripheral link for each vehicle position peripheral link, the alerting unit 34 is positioned in the vicinity of the user of the identified user ID (= the vicinity of the vehicle position peripheral link). Personal location information included in the personal related information received most recently from the mobile terminal 4 carried by the user.

  Next, the alerting unit 34 refers to the entry history information database DB2 corresponding to each of the vehicle position peripheral links, and identifies the record corresponding to the identified user ID among the records of each entry history information database DB2. Next, the alerting unit 34 acquires the entry tendency information corresponding to the time zone to which the current time belongs among the entry tendency information included in the specified record. The approach tendency information acquired by the alerting unit 34 is information indicating an approach tendency in a time zone to which the current time belongs for a user located in the vicinity of the vehicle position peripheral link.

  By performing the above processing, the alerting unit 34 acquires personal position information and approach tendency information for each of the users located in the vicinity of the vehicle position peripheral link. The personal position information acquired here is information indicating the current position of the user, and the approach tendency information indicates the tendency of the user to enter the road section around the vehicle position peripheral link in the time zone to which the present belongs. It is information to show.

  After acquiring the individual position information and approach tendency information of each of the users located in the vicinity of the vehicle position peripheral link, the alerting unit 34 generates alerting instruction information. The alert instruction information is information for instructing to display a pedestrian mark M2 (described later) in a manner described later on the map screen, and includes a combination of personal position information and approach tendency information for each of the users. Yes. In addition, in this embodiment, although it is the structure where personal position information and approach tendency information were included in alerting instruction information, the structure where these information itself is not included in alerting instruction information may be sufficient. That is, the alert instruction information only needs to include information necessary for the map screen display unit 12 of the in-vehicle device 3 to display the pedestrian mark M2, for example, an image of the image in which the pedestrian mark M2 is drawn. It may be image data. After generating the alert instruction information, the alert unit 34 controls the alert device side communication unit 30 to transmit the generated alert instruction information to the in-vehicle device 3.

  The map screen display unit 12 of the in-vehicle device 3 receives the alerting instruction information via the in-vehicle device side communication unit 10. Next, the map screen display unit 12 displays the pedestrian mark M2 on the map screen based on the received alert instruction information.

  FIG. 9 is a diagram illustrating an example of a map screen on which a vehicle position mark M1 and a pedestrian mark M2 indicating the vehicle position are displayed. As shown in FIG. 9, the pedestrian mark M2 is a circular mark painted with a predetermined color. The map screen display unit 12 draws a pedestrian mark M2 for each user based on each combination of personal position information and approach tendency information included in the alert instruction information. That is, the map screen display unit 12 draws each pedestrian mark M2 at a position corresponding to the user position indicated by the corresponding personal position information on the map screen. Therefore, on the map screen, the pedestrian mark M2 is drawn at a position corresponding to the actual position of the user.

  Further, the map screen display unit 12 draws the pedestrian mark M2 in different colors depending on the approach tendency indicated by the corresponding approach tendency information. In the present embodiment, the map screen display unit 12 sets the color of the pedestrian mark M2 to red when the approach tendency is a strong level, and sets the color of the pedestrian mark M2 to yellow when the approach tendency is a medium level. When the approach tendency is at a weak level, the color of the pedestrian mark M2 is blue.

  As described above, in the present embodiment, the alerting unit 34 of the alerting device 2 transmits the alerting instruction information to reflect the actual position of the user and the approach tendency of the user in the in-vehicle device 3. The pedestrian mark M2 is displayed on the map screen. More specifically, the alerting unit 34 causes the map screen display unit 12 of the in-vehicle device 3 to display the pedestrian mark M2 at a position corresponding to the actual position of the user on the map screen, and each pedestrian. The color of the mark M2 is displayed in a color corresponding to the approach tendency of each user. Thereby, the alerting part 34 alerts the pedestrian to the driver of the vehicle.

  And in this embodiment, since the alert about a pedestrian is performed with respect to a driver | operator with the above aspects, there exist the following effects. That is, the degree of attention that the driver should pay when driving is affected by the tendency of pedestrians who actually exist in the vicinity of the road section (the tendency to enter the road section without using a pedestrian crossing). If there is a pedestrian who has a strong tendency to enter the road section without using a pedestrian crossing, it is necessary to drive considering the possibility that the pedestrian will jump out on the road on which the vehicle runs, This is because it is necessary to drive with high attention. Based on this, the driver can recognize not only the position but also the approach tendency of each user with respect to the user located near the road section around the vehicle position by referring to the pedestrian mark M2. For this reason, the driver can recognize when there is a pedestrian who has a strong tendency to enter the road section in the vicinity of the road section that is being driven or is scheduled to travel. It is possible to take measures such as driving a vehicle with higher caution than when there is no pedestrian who has a strong approach tendency when traveling on a simple road section. In other words, the driver can receive an alert reflecting the approach tendency of each user who is actually in the vicinity of one road section, and based on the approach tendency of each user, the driver can accurately determine the degree of attention to be paid when driving. Can be judged.

  In particular, in the present embodiment, the entry history storage unit 42 stores entry history information for each user (individual) for each road section. Moreover, the approach tendency determination part 33 determines an approach tendency for every combination of a road section and a user based on the approach history information of each user of each road section. And the alerting part 34 specifies the user located in the vicinity of one road section based on the personal position information, and reflects the approach tendency for the one road section of each specified user, The driver is alerted about the pedestrian on the one road section. Due to such a configuration, the following effects are obtained.

  That is, the user's approach tendency is assumed to be different for each road section. For example, a user may not use a pedestrian crossing in a certain place because the pedestrian crossing is far away or a short cut can be made without using a pedestrian crossing. In some places, a road section is frequently crossed, while in other road sections, when crossing a road section, a crosswalk is frequently passed. In such a case, the approach tendency for the user is different for each road section. Based on this, in the present embodiment, when the caution mark unit 34 displays the pedestrian mark M2 for a user located in the vicinity of a certain road section, the color that reflects the approach tendency of the user about the road section is displayed. The pedestrian mark M2 is displayed. Due to this configuration, the driver can grasp the approach tendency of the user corresponding to the road section, and can more accurately determine the degree of attention to be paid when driving based on the fact that the approach tendency of the user differs for each road section. .

  Further, in the present embodiment, the entry history storage unit 42 stores entry history information for each combination of a road section and a user for each time zone. Moreover, the approach tendency determination part 33 determines the approach tendency of each time slot | zone for every combination of a road area and a user. And the alerting part 34 specifies the user located in the vicinity of one road section based on the personal position information, and enters the one road section related to the time zone to which the current time of each specified user belongs. In a manner that reflects the tendency, the driver of the vehicle is alerted regarding the pedestrian in the one road section. Due to such a configuration, the following effects are obtained.

  That is, it is assumed that a user's approach tendency changes with time zones. For example, a user frequently crosses a road section without going through a pedestrian crossing in the morning and noon on the same road section, but frequently uses a pedestrian crossing at night when visibility is lower than in the morning or noon. Sometimes it passes. In such a case, the approach tendency for the user is different for each time zone. Based on this, according to the above configuration, the driver can grasp the user's entry tendency corresponding to the time zone to which the current time belongs, and the user's entry tendency may change depending on the time period, It is possible to accurately determine the degree of attention to be paid when driving.

  FIG. 10 is a flowchart illustrating an example of processing of the alerting unit 34 of the alerting device 2 and the map screen display unit 12 of the in-vehicle device 3 according to the present embodiment. In FIG. 10, a flowchart FA shows an example of processing of the map screen display unit 12 of the in-vehicle device 3, and a flowchart FB shows an example of processing of the alerting unit 34 of the alerting device 2. The process shown in the flowchart of FIG. 10 is executed by using the in-vehicle device 3 as a trigger when the vehicle position information described above is transmitted to the alerting device 2.

  As shown in the flowchart FA, the map screen display unit 12 of the in-vehicle device 3 transmits the vehicle position information to the alerting device 2 (step SA1). As described above, the map screen display unit 12 transmits the vehicle position information at a predetermined cycle while the alert function is on.

  As shown in the flowchart FB, the alerting unit 34 of the alerting device 2 receives the vehicle position information (step SB1). Next, the alerting unit 34 identifies the vehicle position peripheral link (step SB2). Next, the alerting unit 34 identifies the user ID of the user located in the vicinity of the vehicle position peripheral link (step SB3). Next, the alerting unit 34 acquires personal location information of each user (step SB4).

  Next, the alerting unit 34 acquires approach tendency information of a user located in the vicinity of the own vehicle position peripheral link (step SB5). Next, the alerting unit 34 generates alerting instruction information including personal location information and approach tendency information for each user, and transmits the alerting instruction information to the in-vehicle device 3 (step SB6).

  As shown in the flowchart FA, the map screen display unit 12 of the in-vehicle device 3 receives the alert instruction information (step SA2). Next, the map screen display unit 12 adds a pedestrian mark M2 to the display screen based on the received alert instruction information (step SA3).

  As a result of the above processing being performed by the in-vehicle device 3 and the alerting device 2 in response to transmission of the own vehicle position information intermittently performed by the in-vehicle device 3, the display of the in-vehicle device 3 displays For a user located in the vicinity of the road section, the pedestrian mark M2 is continuously displayed in a state in which the user's actual position and the user's approach tendency are reflected. As an example, the transmission of the vehicle position information by the in-vehicle device 3 is performed by an HTTP request, and the transmission of the alert instruction information by the alert device 2 is performed by an HTTP response.

  As described in detail above, the alerting device 2 according to the present embodiment provides the entry history information including the entry history of the road section at a place other than the pedestrian crossing that the user has performed in the past for each user (individual). Based on the entry history information of one user, the approach tendency that the one user tends to enter the road section at a place other than the pedestrian crossing is determined. In addition, the alerting device 2 according to the present embodiment identifies a user located in the vicinity of one road section based on the personal position information, and reflects the approach tendency of each identified user in the vehicle The driver is alerted about the pedestrian on the one road section.

  According to this configuration, as described above, the driver can receive a reminder reflecting the approach tendency of each person who is actually in the vicinity of the road section when driving the vehicle. Based on the approach tendency, it is possible to accurately determine the degree of attention to be paid when driving.

Second Embodiment
Next, a second embodiment will be described. FIG. 11 is a block diagram illustrating a functional configuration example of the alerting device 2A according to the second embodiment. As is clear from a comparison between FIG. 11 and FIG. 4, the alert device 2 </ b> A according to the present embodiment has a history update unit 32 </ b> A instead of the history update unit 32 as a functional configuration, and replaces the approach tendency determination unit 33. The approach tendency determination unit 33A is provided, and the attention calling unit 34A is provided instead of the attention calling unit 34. The alerting device 2 </ b> A includes an entry history storage unit 42 </ b> A instead of the entry history storage unit 42. The entry history storage unit 42A stores an entry history information database DB2A instead of the entry history information database DB2.

  FIG. 12 is a diagram illustrating an example of the contents of the entry history information database DB2A according to the present embodiment. In the first embodiment described above, one record in the entry history information database DB2 stored in the entry history storage unit 42 has entry history information and entry tendency information for each time zone. On the other hand, one record of the entry history information database DB2A according to the present embodiment has the entry history information and the entry tendency information in a state where the records are not classified by time zone.

  In the present embodiment, when the history update unit 32A determines that one road section has been entered in one road section by one user regardless of the time zone, the history entry information database corresponding to the one road section is determined. The entry number information related to the one user of DB2A is increased by “1”. On the other hand, when it is determined that the road section entry has not been performed, the history update unit 32A increases the non-entry number information by “1”. Moreover, the approach tendency determination unit 33A determines an approach tendency based on the number-of-entry information and the non-entry-number information that are not classified for each time zone. In addition, the alerting unit 34 </ b> A displays the pedestrian mark M <b> 2 related to one user on the map screen display unit 12 of the in-vehicle device 3 in a color corresponding to the approach tendency that is not classified for each time zone. .

  In the case of the configuration of the second embodiment, the driver can recognize the approach tendency of the user for each road section based on the alert for the pedestrian by the alerting unit 34A, and based on the approach tendency of each user. It is possible to accurately determine the degree of attention to be paid when driving.

<Third Embodiment>
Next, a third embodiment will be described. FIG. 13 is a block diagram illustrating a functional configuration example of the alerting device 2B according to the third embodiment. As is clear from a comparison between FIG. 13 and FIG. 4, the alert device 2 </ b> B according to the present embodiment has a history update unit 32 </ b> B instead of the history update unit 32 as a functional configuration, and replaces the approach tendency determination unit 33. And has an approach tendency determination unit 33B, and has an alerting unit 34B instead of the alerting unit 34. The alerting device 2B includes an entry history storage unit 42B instead of the entry history storage unit 42, and the entry history storage unit 42B stores an entry history information database DB2B instead of the entry history information database DB2. To do.

  In the first embodiment described above, the entry history storage unit 42 stores the entry history information database DB2 for each road section, and the entry history information and the entry tendency information for each user correspond to each entry history information database DB2. It was managed with. On the other hand, in the third embodiment, the entry history storage unit 42B does not store the entry history information database DB2 for each road section, but stores the entry history information database DB2B having the same contents as the entry history information database DB2A of FIG. Remember one.

  In the present embodiment, when the history update unit 32B determines that one user has entered the road section regardless of the road section, the history update unit 32B sets the number of times of entry related to the one user in the entry history information database DB2B to “1”. "To increase. On the other hand, when the history update unit 32B determines that the road section approach has not been performed, the history update unit 32B increases the non-entry number information by “1”. As a result of the above processing being performed by the history updating unit 32B, the entry history information (combination of the entry number information and the non-entry number information) in the entry history information database DB2B is not a crosswalk in the past regardless of the road section. It becomes information indicating a history of entering a road section at a place.

  Moreover, the approach tendency determination part 33B determines an approach tendency based on the number-of-entry information and the non-number-of-entries information that are not classified for each road section. The approach tendency determined by the approach tendency determination unit 33B is an approach tendency with respect to the road in general for each user. Moreover, when the caution mark part 34B displays the pedestrian mark M2 which concerns on one user on the map screen display part 12 of the vehicle-mounted apparatus 3, it displays with the color corresponding to the approach tendency which is not divided for every road area. .

  Here, there are people who have a strong tendency to enter the road at places other than the pedestrian crossing and those who are not, regardless of the road section. If there is a person who has a strong tendency to enter the road at a place other than a pedestrian crossing, regardless of the road section, the driver will give a higher degree of attention than when there is no such person. It is necessary to drive with it. Based on the above, according to the configuration of the third embodiment, the driver can make a general road road for each of the users who actually exist around the vehicle position based on the caution about the pedestrian by the attention calling unit 34B. The approach tendency can be recognized, and the degree of attention to be paid when driving can be determined accurately based on the approach tendency of each user to the road in general.

<Fourth embodiment>
Next, a fourth embodiment will be described. FIG. 14 is a block diagram illustrating a functional configuration example of the alerting device 2C according to the fourth embodiment. As is apparent from a comparison between FIG. 14 and FIG. 4, the alert device 2 </ b> C according to the present embodiment has a history update unit 32 </ b> C instead of the history update unit 32 as a functional configuration, and replaces the approach tendency determination unit 33. The approach tendency determination unit 33C is provided, and the attention calling unit 34C is provided instead of the attention calling unit 34. The alerting device 2C has an entry history storage unit 42C instead of the entry history storage unit 42, and the entry history storage unit 42C is added to the entry history information database DB2 for each road section according to the first embodiment. The general entry history information database DB2C is stored.

  The general approach history information database DB2C is a database having the same contents as the approach history information database DB2B according to the third embodiment described above. In other words, the general entry history information database DB2C has, for each user, entry history information (hereinafter referred to as “general entry history information”) indicating a history of a user having entered the road section at a place other than a pedestrian crossing regardless of the road section. ) And approach tendency information are stored in association with each other. Specifically, the general approach history information includes the number-of-entry information indicating the number of times the user has entered the road section in a place other than the crosswalk in the past regardless of the road section, and the non-entry number information indicating the number of times the user has not entered. Is a combination. The history update unit 32C performs the same process as the history update unit 32B according to the third embodiment, and updates the general approach history information in the general approach history information database DB2C. Further, the approach tendency determination unit 33C performs the same process as the approach tendency determination unit 33B according to the third embodiment, and determines an approach tendency (hereinafter referred to as “general approach tendency”) based on the general approach history information. . The general approach tendency is an approach tendency of the user to the general road.

  34 C of alerting parts are 1st implementation based on the approach tendency in approach history information database DB2 for every road section, when displaying pedestrian mark M2 concerning one user on map screen display part 12 of in-vehicle device 3 Similar to the form, the color of the pedestrian mark M2 is displayed in a color corresponding to the approach tendency. Furthermore, in this embodiment, the alerting unit 34C is based on the general approach tendency in the general approach history information database DB2C, and the user who has a strong general approach tendency regardless of the road section (for roads in general other than crosswalks, For users who have a strong tendency to enter

  FIG. 15 is a diagram illustrating an example of a screen displayed on the map screen display unit 12 of the in-vehicle device 3 by the alerting unit 34 </ b> C according to the present embodiment. In the example of FIG. 15, the alerting unit 34C clearly indicates that the general approach tendency of the user is strong by surrounding the corresponding pedestrian mark M2 with the ring Q for the user who has a strong general approach tendency. .

  According to the present embodiment, the driver can recognize the approach tendency of each user's road section that actually exists in the vicinity of the road section around the vehicle position, and is not involved in each user's road section. It is possible to recognize the approach tendency to the road in general, and more accurately determine the degree of attention to be paid when driving.

<Fifth Embodiment>
Next, a fifth embodiment will be described. FIG. 16 is a block diagram illustrating a functional configuration example of the alerting device 2D according to the fifth embodiment. As is apparent from a comparison between FIG. 16 and FIG. 4, the alerting device 2D according to the present embodiment has a history update unit 32D instead of the history update unit 32 as a functional configuration, and replaces the approach tendency determination unit 33. And has an approach tendency determination unit 33D, and has an attention calling unit 34D instead of the attention calling unit 34. Moreover, the alerting device 2D has an entry history storage unit 42D instead of the entry history storage unit 42, and the entry history storage unit 42D is included in the entry history information database DB2 for each road section according to the first embodiment. In addition, an attribute-specific entry history information database DB2D is stored for each attribute of the road section.

  In the present embodiment, the attribute of the road section is a combination of the number of lanes in the road section and the presence or absence of a sidewalk in the road section. The attribute of the road section is not limited to the combination of the number of lanes of the road section exemplified in this embodiment and the presence or absence of a sidewalk in the road section. The attribute of the road section may be any road characteristic that affects the approach to the road at a place other than the pedestrian crossing, and may include the type of the road section (national road) as an example.

  FIG. 17 is a diagram illustrating an example of the contents of the attribute-specific entry history information database DB2D. As shown in FIG. 17, the attribute-specific entry history information database DB2D has a record for each user, and each record has a user ID, attribute-specific entry history information, and attribute-specific approach tendency information as information. . The attribute-specific entry history information includes attribute-specific entry frequency information and attribute-specific non-entry frequency information. Each information will be described later.

  In the present embodiment, the history update unit 32D appropriately updates the entry history information in the entry history information database DB2 for each road section based on the personal related information as in the history update unit 32 according to the first embodiment. Furthermore, the history update unit 32D updates the corresponding attribute-specific entry history information according to the update of the entry history information.

  More specifically, when the history update unit 32D updates the entry history information corresponding to one road section for one user, the road update unit 32D refers to the road data 401, the lane number information related to the one road section, and the sidewalk Get presence information. Next, the history update unit 32D recognizes the attribute of the one road section (in this embodiment, a combination of the number of lanes and the presence / absence of sidewalks) based on the acquired lane number information and sidewalk presence / absence information.

  Next, the history update unit 32D refers to the attribute-specific entry history information database DB2D corresponding to the recognized attribute, and identifies a record corresponding to the one user among the records in the database. Next, the history update unit 32D increases the entry count information by attribute by “1” for the entry history information by attribute of the specified record and determines that the road segment has entered the one road section. When it is determined that there is no entry, the attribute-specific non-entry count information is increased by “1”. As a result of the above processing being performed by the history updating unit 32D, the attribute-specific entry history information database DB2D corresponding to one attribute has a road section of the one attribute for each user at a location other than a pedestrian crossing in the past. The entry history information classified by attribute indicating the history of entering is stored.

  In the present embodiment, the approach tendency determining unit 33D appropriately determines the approach tendency based on the approach history information and updates the approach tendency information, similarly to the approach tendency determining unit 33 according to the first embodiment. Further, the approach tendency determination unit 33D determines the approach tendency by attribute based on the approach history information by attribute for the approach history information database DB2D by attribute, and updates the approach tendency information by attribute. The attribute-specific approach tendency is a tendency for a user to enter a road section having a corresponding attribute at a place other than a pedestrian crossing. The approach tendency determination unit 33D determines the approach tendency by attribute based on the approach history information by attribute in the same manner as when the approach tendency is determined. As a result of the above processing performed by the approach tendency determination unit 33D, the attribute-specific entry history information database DB2D corresponding to one attribute is stored in a place other than the pedestrian crossing in the road section of the one attribute for each user. The attribute-specific approach tendency information indicating the tendency to enter is stored.

  In the present embodiment, the alerting unit 34D, when displaying the pedestrian mark M2 related to one user on the map screen display unit 12 of the in-vehicle device 3, is based on the approach tendency in the approach history information database DB2 for each road section. As in the first embodiment, the color of the pedestrian mark M2 is displayed in a color corresponding to the approach tendency. Further, the alerting unit 34D uses a road section having the same attribute as the attribute of the one road section for a user located in the vicinity of the one road section based on the entry tendency by attribute in the attribute-specific entry history information database DB2D. If there is a strong tendency to enter in places other than pedestrian crossings, clearly indicate that. For example, when the user is located near one road section, the alerting unit 34D has a strong tendency to enter a road section having the same attribute as the one road section at a place other than a pedestrian crossing. The pedestrian mark M2 related to the user is surrounded by a ring as shown in FIG. 15 to clearly show that the tendency is strong.

  Here, it is assumed that a user's approach tendency may change with the attribute of a road area. For example, when there is a sidewalk depending on the user, there is a strong tendency to enter the road section compared to the case where there is no sidewalk, or in the case of one lane on both sides, the tendency to enter the road section compared to the case of one lane on one side May be strong. Based on this, according to the configuration of the present embodiment, the driver can recognize the approach tendency for each user's road section that actually exists in the vicinity of the road section around the vehicle position, When a user who has a strong tendency to enter a road section on a road with a specific attribute is located in the vicinity of the road with the specific attribute, the user can recognize this and pay more accurately when driving The degree of attention should be determined.

  In addition, in 1st Embodiment mentioned above, the screen displayed on the display 5 of the vehicle-mounted apparatus 3 based on the alerting instruction information which the alerting part 34 transmits was concretely illustrated using FIG. However, the screen displayed on the display 5 of the in-vehicle device 3 is not limited to the screen illustrated in FIG. For example, in the first embodiment, the blue pedestrian mark M2 is displayed on the map screen when the approach tendency is at a weak level. However, when the approach tendency is at a weak level, the pedestrian mark is displayed. A configuration in which M2 is not displayed may be used. Further, for example, a configuration may be used in which a road section in which a user with a strong approach tendency exists in the vicinity and a road section in which a user with a strong approach tendency does not exist are drawn in different colors. In this case, the pedestrian mark M2 may or may not be displayed. In addition, the device on which information related to alerting is displayed is not limited to the display 5. For example, the information may be displayed on the windshield by a head-up display. For example, the information may be displayed on a display device other than the display 5. A configuration in which guidance is performed by being displayed may be used. The same applies to the other embodiments.

  Moreover, in 1st Embodiment mentioned above, the alerting part 34 performed alerting by the display on the display 5. FIG. In this regard, when the in-vehicle device 3 has a function of outputting sound, the alerting unit 34 may be configured to alert by voice instead of or in combination with the display. For example, when a user who has a strong entry tendency is located near a road section around the vehicle position, the alerting unit 34 indicates to the in-vehicle device 3 that “a person who tends to jump out on the road is nearby. The Please be careful. It is possible to output a voice such as “” to call attention. The same applies to the other embodiments.

  Moreover, in 1st Embodiment mentioned above, the alerting part 34 acquires own vehicle position information from the vehicle-mounted apparatus 3, and displays the pedestrian mark M2 about the user located in the vicinity of the road area around the own vehicle position. I was letting. In this regard, the alerting unit 34 detects that when the vehicle has newly entered the road section, and displays a pedestrian mark M2 for a user located near the road section where the vehicle has newly entered. It is also possible to adopt a configuration. When the in-vehicle device 3 has a navigation function for searching for and guiding a route to the destination (hereinafter referred to as “guidance route”), the alerting unit 34 communicates with the in-vehicle device 3, The information which shows a guidance route is acquired, and the structure which displays the user's pedestrian mark M2 located in the vicinity of a road segment suitably about the road segment contained in a guidance route may be sufficient. The same applies to the other embodiments.

  Moreover, in 1st Embodiment mentioned above, the approach history memory | storage part 42 was the structure which memorize | stores approach history information database DB2 for every road area where the link was defined. In this regard, it is not necessary to store the entry history information database DB2 for all road sections for which links are defined, and the entry history information database DB2 may be stored only for limited road sections. The limited road section is, for example, a main road such as a national road or a road section where many accidents occur. Moreover, the structure which registers a road area for every driver | operator may be sufficient. In this case, the history update unit 32, the approach tendency determination unit 33, and the alerting unit 34 each perform the above-described process for a limited road section. The same applies to the other embodiments.

  Further, in the first embodiment described above, the history update unit 32 is based on the personal related information cumulatively stored in the personal related information database DB1 during the most recent fixed period for each user for each fixed period. The approach history information is updated. In this regard, the history update unit 32 may execute the processing in real time in response to the reception of the personal related information from each mobile terminal 4. The same applies to the other embodiments.

  Moreover, in 1st Embodiment mentioned above, the log | history update part 32 demonstrated concretely the method of determining whether the road area approach was in one road area. However, the method described above is merely an example, and the history update unit 32 may determine whether or not a road section has been entered by another method. The same applies to the other embodiments.

  Moreover, in 1st Embodiment mentioned above, the approach tendency determination part 33 calculated the road area approach rate, and determined the approach tendency based on the calculated road area approach rate. In this regard, the approach tendency determining unit 33 may determine the approach tendency by another method. For example, regarding the determination of the approach tendency of one user for one road section, the approach tendency determining unit 33 may be configured to determine that the approach tendency is stronger as the value is larger, based on the value of the number of times of entry. . Further, the approach tendency determining unit 33 may be configured to determine that the approach tendency is stronger as the value is larger, based on the difference value between the approach number information and the non-entry number information. The same applies to the other embodiments.

  In addition, each of the above-described embodiments is merely an example of a specific example for carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

2, 2A, 2B, 2C, 2D Alerting device 31 Personal information acquisition unit 32, 32A, 32B, 32C, 32D History update unit 33, 33A, 33B, 33C, 33D Approach tendency determination unit 34, 34A, 34B, 34C , 34D attention calling part 42, 42A, 42B, 42C, 42D entry history storage part

Claims (9)

For each individual, an entry history storage unit that stores entry history information indicating a history of an individual entering a road section in a place other than a pedestrian crossing in the past;
Based on the entry history information of each individual, for each individual, an entry tendency determination unit that determines an entry tendency that is an individual tends to enter a road section at a place other than a pedestrian crossing;
An individual-related information acquisition unit that acquires personal location information indicating the current location of the individual from a terminal carried by the individual;
Based on the personal location information, an individual located in the vicinity of one road section is identified, and the approach tendency of each identified individual is reflected to the vehicle driver with respect to the one road section. An alerting section for alerting pedestrians,
An alerting device characterized by comprising: The entry history storage unit
For each road section, store the entry history information for each individual,
The approach tendency determination unit
Based on the entry history information of each person in each road section, determine the approach tendency for each combination of road section and individual,
The alerting part is
On the basis of the personal location information, an individual located in the vicinity of one road section is identified, and in a manner reflecting the approach tendency of the identified individual for the one road section, to the driver of the vehicle The alerting device according to claim 1, wherein alerting is performed for a pedestrian in the one road section. The entry history storage unit
For each time zone, the entry history information for each individual is stored,
The approach tendency determination unit
Based on the entry history information of each individual in each time zone, determine the approach tendency for each combination of time zone and individual,
The alerting part is
On the basis of the personal location information, an individual located in the vicinity of one road section is identified, and the approach tendency for the time zone to which the current time of each identified individual belongs is reflected to the driver of the vehicle. The alerting device according to claim 1 or 2, wherein alerting is performed for a pedestrian in the one road section. The entry history storage unit
For each individual, further memorize general entry history information indicating the history that the individual entered the road section at a place other than the crosswalk in the past regardless of the road section,
The approach tendency determination unit
Based on the general entry history information of each individual, for each individual, determine the general approach tendency, which is the tendency of the individual to enter the road section at a place other than the crosswalk regardless of the road section,
The alerting part is
4. The vehicle driver is alerted in a manner that reflects the general approach tendency when alerting a pedestrian in a road section. 5. The alerting device described in 1. The entry history storage unit
For each individual attribute of the road section, for each individual, further storing attribute-specific entry history information indicating the history of the individual entering the road section at a place other than the pedestrian crossing in the past,
The approach tendency determination unit
Based on the attribute entry history information of each individual for each road section attribute, for each combination of the road section attribute and the individual, the individual entry tends to enter the road section at a place other than the pedestrian crossing Determine the trend,
The alerting part is
5. The vehicle driver is alerted in a manner that reflects the attribute-specific approach tendency when alerting a pedestrian in a road section. 5. Warning device according to the item. The individual-related information acquisition unit acquires movement direction information indicating a direction in which the individual moves together with the personal position information at an interval from the terminal carried by the individual,
Based on the individual position information and the moving direction information of one individual, it is determined whether the one individual has entered a road section at a place other than a pedestrian crossing, and the entry history storage is based on the determination result. The alerting device according to any one of claims 1 to 5, further comprising a history update unit that updates the entry history information stored in the unit. The alerting part is
When alerting the driver of a pedestrian about a pedestrian in a road section, when the individual who has a strong approach tendency is in the vicinity of the road section, the caution is higher than when not. The alerting device according to any one of claims 1 to 6, wherein the alerting device alerts a pedestrian at a degree. The alerting part is
The alerting device according to any one of claims 1 to 7, wherein the alerting device communicates with an in-vehicle device of a vehicle to clearly indicate a position of an individual having a strong approach tendency on a map. For each individual, based on the entry history information for each individual, and an entry history storage unit that stores history information indicating the history that the individual has entered the road section at a place other than a pedestrian crossing in the past, An approach tendency determination unit for determining an approach tendency that is a tendency to enter a road section at a place other than a pedestrian crossing,
A first step in which an individual-related information acquisition unit of the alerting device acquires personal position information indicating a current position of the individual from a terminal carried by the individual;
The alerting unit of the alerting device identifies an individual located in the vicinity of one road section based on the personal location information, and reflects the approach tendency of each identified individual in the manner in which the driver of the vehicle is reflected. A second step of alerting a pedestrian on the one road section;
An alerting method characterized by including: