JP6957093B2 - Attention device and attention method - Google Patents

Description

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

Conventionally, there is known a warning device that alerts a driver who drives a vehicle about a pedestrian. For example, conventionally, an area in which the driver should pay attention to pedestrians, such as an area including an elementary school school road, is predetermined, and when a vehicle enters a predetermined area, the driver is notified. A technique for calling attention to the technique (hereinafter referred to as "conventional technique 1") is known. Further, for example, conventionally, a warning device displays the position of a pedestrian near the road on a map while the vehicle is running, and causes the driver to recognize the position of the pedestrian to warn the driver. A technique for arousing (hereinafter referred to as "conventional technique 2") is known. It should be noted that Patent Document 1 predicts and notifies an accident prediction area in which an accident may occur with a passerby when a vehicle enters and passes through an intersection based on the passage history of the passerby and the vehicle. The notification device is described.

Japanese Unexamined Patent Publication No. 2010-211301

However, with conventional technology, the driver cannot accurately determine how much attention should be paid based on what kind of pedestrians are actually in the vicinity of the road on which the vehicle is traveling while driving. There was a problem. For example, in the above-mentioned prior art 1, the driver is alerted when the vehicle enters a specific area as a trigger. Therefore, the driver can recognize that, for example, if the specific area is an area including the school road of an elementary school, an elementary school student may enter the road on which the vehicle is running. You can drive with high attention based on your perception. However, in the prior art 1, regardless of the situation of a pedestrian who is actually in the vicinity of the road at the time of driving, the driver is uniformly alerted by entering the specific area, so that the driver can use the vehicle. 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 the vehicle travels.

Further, in the above-mentioned prior 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 a place other than the pedestrian crossing, and some pedestrians relatively often enter the road at a place other than the pedestrian crossing. Only the position of pedestrians near the road is displayed on the map, and the driver should be careful about what kind of pedestrians are actually near the road on which the vehicle is traveling. I can't decide exactly if I should pay.

The present invention has been made to solve such a problem, and when a driver is alerted to a pedestrian crossing a road, the driver causes the vehicle to travel on the road. The purpose is to be able to accurately judge the degree of attention based on what kind of pedestrians are actually in the vicinity.

In order to solve the above-mentioned problems, the alert device according to the present invention stores, for each individual, entry history information indicating the history of an individual entering a road section at a place other than a pedestrian crossing in the past, and is used for each individual. Based on the approach history information, the approach tendency that an individual tends to enter the road section at a place other than the pedestrian crossing is determined for each individual. Then, the alert device according to the present invention acquires personal position information indicating the current position of the individual from a terminal carried by the individual, and based on the acquired personal position information, moves to the vicinity of one road section. The located individual is identified, and the driver of the vehicle is alerted to the pedestrians in the one road section in a manner that reflects the approach tendency of each identified individual. At that time, as one aspect, the approach history information for each individual is stored for each road section, and the approach tendency is set for each combination of the road section and the individual based on the approach history information for each individual in each road section. Judgment is made, and based on the personal position information, an individual located in the vicinity of the road section existing around the vehicle is identified, and the driver of the vehicle reflects the approach tendency of each identified individual for the road section. In response to this, a warning regarding pedestrians in the relevant road section will be issued. As another aspect, the entry history information for each individual is stored for each time zone, and the approach tendency is determined for each combination of the time zone and the individual based on the entry history information of each individual in each time zone. Then, based on the personal position information, the individual located in the vicinity of the road section existing around the vehicle is identified, and the approach tendency of the vehicle is reflected in the time zone to which the current time of each identified individual belongs. Alert the driver about pedestrians in the road section. As another aspect, for each attribute of the road section, the entry history information by attribute indicating the history of the individual entering the road section at a place other than the crosswalk in the past is further stored, and each road section is stored. Based on the entry history information of each individual of the attribute of, for each combination of the attribute of the road section and the individual, the approach tendency by attribute, which is the tendency of the individual to enter the road section at a place other than the crosswalk, is determined. , When alerting the driver of the vehicle regarding pedestrians in the road section existing around the vehicle, the driver is alerted in a manner that reflects the approach tendency by attribute.

The degree of caution a driver should pay when driving is influenced by the "tendency to enter the road section without using a pedestrian crossing" of pedestrians who actually exist near 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 consider the possibility that the pedestrian will jump out on the road on which the vehicle is traveling. This is because it is necessary to drive with high caution. Based on the above, according to the present invention configured as described above, an approach tendency that tends 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 a warning is given to a person, the warning is given in a manner that reflects the approach tendency of an individual who is actually in the vicinity of the one road section. Therefore, the driver can receive a warning that reflects the approach tendency of each individual who is actually in the vicinity of the one road section, and the degree of caution to be paid when driving based on the approach tendency of each individual. Can be judged accurately.

It is a figure which shows the structural example of the attention alert system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the functional structure example of the in-vehicle device and the mobile terminal which concerns on 1st Embodiment of this invention. It is a figure which shows the information included in the personal-related information. It is a block diagram which shows the functional structure example of the attention alerting apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the node data and the link data. It is a figure which shows an example of the contents of the approach history information database which concerns on 1st Embodiment. It is a figure which shows the result of map matching of the user position indicated by personal position information on a road map. It is a figure which shows the 1st range. It is a figure which shows an example of the screen displayed by the vehicle-mounted device which concerns on 1st Embodiment of this invention. It is a flowchart which shows an example of the processing by the in-vehicle device and the alert device which concerns on 1st Embodiment of this invention. It is a block diagram which shows the functional structure example of the attention alerting apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows an example of the contents of the approach history information database which concerns on 2nd Embodiment. It is a block diagram which shows the functional structure example of the attention alerting apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the functional structure example of the attention alerting apparatus which concerns on 4th Embodiment of this invention. It is a figure which shows an example of the screen displayed by the vehicle-mounted device which concerns on 4th Embodiment of this invention. It is a block diagram which shows the functional structure example of the attention alerting apparatus which concerns on 5th Embodiment of this invention. It is a figure which shows an example of the contents of the entry history information database by attribute which concerns on 5th Embodiment.

<First Embodiment>
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration example of the alert system 1 according to the present embodiment. The alert system 1 is a system that alerts the driver who drives the vehicle about pedestrians. As shown in FIG. 1, the alert system 2, the in-vehicle device 3, and the mobile terminal 4 are provided. I have. Each of these devices has access to 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 showing 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 clearly indicating the own vehicle position. There is. 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 (smartphone, tablet PC, notebook PC, etc.) owned by the passenger of the vehicle. That is, the in-vehicle device 3 may be any device that can alert the driver regarding pedestrians in the manner described later based on the information received from the alert device 2.

As shown in FIG. 2, the 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 see at least the display area such as the central portion of the dashboard of the vehicle. Further, the in-vehicle device 3 includes an in-vehicle device side communication unit 10, a vehicle position detection unit 11, and a map screen display unit 12 as its functional configuration. Further, the in-vehicle device 3 includes a map data storage unit 13.

Each of the above 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 to include a computer CPU, RAM, ROM, etc., and is a program stored in a recording medium such as RAM, ROM, hard disk, or semiconductor memory. Is realized by the operation of. The above is the same for other functional blocks described later.

The map data storage unit 13 stores map data. Map data includes data used for drawing a map, 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. I'm out.

The in-vehicle device side communication unit 10 accesses the network N in accordance with a predetermined communication standard, and communicates with a device (including the alert 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 communicates with a terminal which does not have the function and has a function of accessing the network N, and communicates with the terminal via the terminal. It may be configured to access the network N.

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

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

The mobile terminal 4 is a terminal carried by the user for the purpose of transmitting personal information (described later) about the user to the alert device 2 while the user is walking. In the present embodiment, the person carrying the mobile terminal 4 is particularly referred to as a "user" to distinguish it from the driver of the vehicle. The mobile terminal 4 may be a 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 the safe walking of the user of the mobile terminal 4. Based on this, as an example, the mobile terminal 4 is given to a child of elementary school age or an elderly person who has a decline in cognition by the person concerned. In addition, in this embodiment, "walking" means that the user moves outdoors by walking or biking.

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 timekeeping unit 23, and a personal-related information transmission unit 24 as functional blocks thereof. .. The mobile terminal 4 has a function of transmitting personal-related information (described later) such that a predetermined application is launched while the power is turned on while the user is walking. As a result, personally related information is transmitted from the mobile terminal 4 at any time while the user is walking.

The mobile terminal side communication unit 20 accesses the network N according to a predetermined communication standard, and communicates with a device (including a warning 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 GPS (not shown) or the like in the cycle S1, and indicates the user position. The position information is output to the personal information transmission unit 24. In this embodiment, the user position is represented 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 for detecting the user position.

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

The time measuring unit 23 clocks the time by a time measuring means such as an RTC (real-time clock), and outputs the measured time information indicating the time at that time to the personal-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 alert device 2. Hereinafter, the processing of the personal information transmission unit 24 will be described in detail.

FIG. 3 is a diagram showing information included in personal-related information. As shown in FIG. 3, the personal-related information includes a user ID, personal position information, movement direction information, and measurement time information. The user ID is identification information that identifies 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 timing unit 23. Generate personal related information based on the measured 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 alert device 2. Information related to communication necessary for transmitting personal information such as the address of the alert device 2 and the protocol used for communication to the alert 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 information (FIG. 3) is constantly provided from the mobile terminal 4 to the alert device 2 in the cycle S1. Will be sent.

FIG. 4 is a block diagram showing a functional configuration example of the alert device 2. The alert device 2 is a server connected to the network N. In FIGS. 1 and 4, the alert device 2 is represented by one block, but this does not mean that the alert device 2 is composed of a single server device. The alert device 2 may be composed of a plurality of server devices, or may be a part of a predetermined system. That is, the alert device 2 may have any form as long as it has a function described later.

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

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

The road data storage unit 40 stores the road data 401. The road data 401 includes a node table TB1 related to a node and a link table TB2 related to a link. A node is a point defined for each node in an intersection or other 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 is a diagram showing a part of the information contained in the node data. As shown in FIG. 5A, the node data includes a node ID, node position information, connection entry / exit link information, and connection / exit link information.

The node ID is identification information that identifies the node. The node position information is information indicating the position of the node on the map. The connection entry link information is information that indicates a link ID (described later) of each link that connects to the node and whose traveling direction is the direction of entering the node. The connection exit link information is information that indicates the link ID of each link that connects to the node and whose traveling direction is the direction of exiting the node. Note that the information exemplified as the information included in the node data is a part of the information, and in addition to the illustrated 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 showing a part of the information contained in the link data. As shown in FIG. 5B, one record of the link table TB2 includes a link ID, a link length information, a link direction information, a link type information, a number of lanes information, a sidewalk presence / absence information, and a first record. It has a 1-node ID and a 2nd node ID.

The link ID is identification information that identifies the link. The link length information is information indicating the length of the link. The link orientation information is information indicating the orientation of the link by the azimuth angle (the angle in the horizontal plane with the north as "0 °"). The link type information is information indicating the type of the 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 the 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.

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 illustrated information.

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

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

As described above, personally related information is transmitted to the alert device 2 from a plurality of different mobile terminals 4 at any time. The personal-related information acquisition unit 31 executes the following processing for each of the acquired personal-related information. That is, when the personal-related information acquisition unit 31 acquires the personal-related information, the personal-related information acquisition unit 31 recognizes the user ID included in the personal-related information. Next, the personal-related information acquisition unit 31 identifies the 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 personal-related information acquisition unit 31, personal-related information transmitted by the mobile terminal 4 carried by the user is cumulatively stored in the personal-related information database DB1 related to the user. It will be in the state of being.

The approach history storage unit 42 stores the approach history information database DB2 for each road section in which the 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 of being associated with the link ID of each road section.

FIG. 6 is a diagram schematically showing an example of the contents of the approach history information database DB2 relating to one road section. As shown in FIG. 6, the entry 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 a first time zone information, a second time zone information, and a 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, it is 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 information on the number of times of entry and information on the number of times of non-entry. In this way, the approach history storage unit 42 stores the approach history information for each time zone for each road section for each individual. Each information contained 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 the movement direction information of the one user (individual), and uses the determination result as a result. Based on this, the approach history information (combination of the approach count information and the non-entry count information as described above) stored in the approach history storage unit 42 is updated. Hereinafter, the processing 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 alert device 2 in the cycle S1 while the user carrying the mobile terminal 4 is walking. Further, in the personal-related information database DB1 relating to one user, personal-related information transmitted in the past by the mobile terminal 4 carried by the one user is cumulatively stored. Then, the history update unit 32 executes the following processing for each of the users at regular intervals based on the personal-related information cumulatively stored in the personal-related information database DB1 during the most recent fixed period. The fixed period is, for example, one day.

Hereinafter, the process executed by the history update unit 32 with one user as the 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 individual cumulatively stored in the personal-related information database DB1. Of the related information, the personal related information stored in the last fixed period is acquired.

Next, the history update unit 32 executes the following processing based on the acquired personal-related information. That is, the history update unit 32 is personally related to the road network (hereinafter referred to as "road map") constructed by combining links and nodes based on the road data 401 stored in the road data storage unit 40. Map match each of the user positions indicated by the personal position information included in the information.

7 (A) and 7 (B) are diagrams schematically showing the results of map matching of the user positions indicated by the personal position information included in the personal-related information on the road map in a mode suitable for explanation. Is. In each figure of FIG. 7, the direction shall follow the direction shown in the figure. In the road map illustrated in each figure of FIG. 7, the link LK1 extending from north to south is connected to the node ND1, the link LK2 extending from east to west is connected to the east side, and the link LK3 extending from north to south is connected to the north side. , The link LK4 extending from east to west is connected to the west side.

Further, in each of the figures of FIG. 7, points P1 to P6 are points where the result of map matching of the user position indicated by the personal position information is plotted on the road map. The points P1 to P6 are points based on personal position information transmitted from the point P1 to 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 each point are the "magnitude of the user's movement direction and acceleration" indicated by the movement direction information included in the personal 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, the user entering the road section at a place other than the pedestrian crossing is referred to as "road section entry". Road section entry involves crossing a road section at a location other than a pedestrian crossing. Pedestrians may intentionally cross a road section at a location other than a pedestrian crossing, for example, when they intend to take a shortcut or when it is cumbersome to move to a pedestrian crossing. In addition, the road section approach includes that a pedestrian enters the area where the vehicle travels, although the road section is not crossed at a place other than the pedestrian crossing. Elementary school children and younger children, as well as elderly people with cognitive decline, may behave irregularly and may enter road sections without the intention of crossing them.

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

When determining whether or not a road section has entered a road section corresponding to one link, the history update unit 32 is matched to the user position matched to the one link (however, the nodes at both ends of the one link are matched. The following judgments are made for each of the above user positions). That is, in the history update unit 32, whether the movement direction at the matched user position belongs to the first range and the magnitude of acceleration is equal to or more than the first threshold value based on the movement direction information included in the corresponding personal information. Judge whether or not.

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

When the movement direction at the matched user position belongs to the first range and the magnitude of acceleration is equal to or greater than the first threshold value, the user has sufficient momentum in the direction in which the road section extends at the user position. It can be estimated that the vehicle is walking at a high speed and has crossed the road section or entered the area where the vehicle travels in the road section at the position corresponding to the user position. Based on this, when the movement direction at the matched user position belongs to the first range and the magnitude of the acceleration is equal to or greater than the first threshold value, the history update unit 32 has entered the road section at that 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 threshold values when determining the presence or absence of road section approach.

When determining whether or not a road section has entered a road section corresponding to one link, the history update unit 32 states that even one road section entry has occurred in the user positions matched to the one link. If there is a determined user position (a user position whose movement direction belongs to the first range and the magnitude of acceleration is equal to or greater than the first threshold value), there is a road section entry in the road section corresponding to the one link. Judged as On the other hand, if the history update unit 32 does not have any user position determined to have entered the road section among the user positions matched to the one link, the history update unit 32 corresponds to the road section corresponding to the one link. In, it is determined that there was no road section entry.

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 information transmitted by the mobile 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 a road section has entered a road section corresponding to one link, the determination is made 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 entry into the road section at a place other than the pedestrian crossing.

Regarding this point, 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 has entered the road section corresponding to one link. Recognize the position of the pedestrian crossing in the road section based on the information indicating. Then, the history updating unit 32 determines whether or not a road section approach has occurred at each user position, except for the 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 the road section has entered the road section corresponding to one link by preferably utilizing the fact that the road data 401 includes information indicating the position of the pedestrian crossing.

Further, the following configuration may be used. That is, when the road data 401 does not include the information indicating the position of the pedestrian crossing and includes the information indicating the position of the traffic light, the history update unit 32 sets the road section for the road section corresponding to one link. When determining the presence or absence of 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 update unit 32 determines whether or not a road section approach has occurred at each user position, except for the area corresponding to the position of the traffic light at 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, the presence or absence of the road section approach for the road section corresponding to one link is appropriately utilized by preferably utilizing the fact that the road data 401 includes information indicating the position of the traffic light. Can be judged.

For example, when the link LK1 in FIG. 7A is a link for determining whether or not a road section has entered, the history update unit 32 executes the following processing. That is, in the history update unit 32, among the points matched with the link LK1, the movement direction of the user at each position is set to the first range for each of the points P1 to P4 except the point P5 matched with the node ND1. It is determined whether or not it belongs and the magnitude of acceleration is equal to or greater than the first threshold value. In the example of FIG. 7A, the history update unit 32 states that "the movement direction of the user at each position belongs to the first range and the magnitude of acceleration is equal to or greater than the first threshold value" for all points P1 to P4. It is judged 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.

Further, for example, when the link LK1 of FIG. 7B is a link for determining whether or not a road section has entered, the history update unit 32 executes the following processing. That is, the history update unit 32 determines whether or not the movement direction of the user at each position belongs to the first range and the magnitude of acceleration is equal to or greater than the first threshold value for each of the points P1 to P4 matched to the link LK1. Is determined. In the example of FIG. 7B, the history update unit 32 indicates that the movement direction of the user at each position belongs to the first range and the magnitude of acceleration is equal to or greater than the first threshold value with respect to the point P2. It is determined that a road section approach has occurred at point P2. Further, the history update unit 32 determines that the other points P1, P3, and P4 are not "the user's moving direction at each position belongs to the first range and the magnitude of acceleration is not equal to or greater than the first threshold value". Therefore, the history update unit 32 determines that the road section has entered in the road section corresponding to the link LK1.

As described above, the history update unit 32 determines whether or not there is a road section entry for each of the links (road sections) whose user positions are matched. After that, the history update unit 32 corresponds to the approach history information (entry count information and non-entry count information) according to the presence or absence of the road section approach for each of the road sections subject to the determination of the presence or absence of the road section approach. (Combination with) is updated.

Hereinafter, the process of the history updating unit 32 when updating the corresponding approach history information according to the presence or absence of the road section approach in one road section by one user will be described. First, the history update unit 32 determines the time when the user walks in the vicinity of the one road section based on the measurement time information included in the personal information corresponding to the user position matching the one road section. Identify. Next, the history update unit 32 specifies a time zone to which the specified time belongs (hereinafter, referred to as “specific time zone”). In the present embodiment, the time zone is the first time zone corresponding to the morning (for example, the time zone from 6 am to 10 am) and the second time zone corresponding to the daytime (for example, 10 am to 4 pm). It is divided into three time zones: a time zone until time) and a third time zone corresponding to the night (for example, a time zone from 4:00 pm to 6:00 am the next day). The above-mentioned first time zone information corresponds to the first time zone, the second time zone information corresponds to the second time zone, and the third time zone information corresponds to the third time. Information corresponding to the band.

Next, the history updating unit 32 identifies the approach history information database DB2 associated with the link ID corresponding to the one road section among the approach history information database DB2 stored in the approach history storage unit 42. Next, the history update unit 32 identifies the record having the user ID of the one user among the records of the specified entry history information database DB2. Next, when the history update unit 32 determines that there has been a road section entry for the one road section, the history update unit 32 sets the value of the entry count 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 count 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". The initial values of the entry count information and the non-entry count information are "0", respectively.

As a result of the above processing being performed by the history update unit 32, in the approach history information database DB2 for one road section, the value of the number of approaches information for one time zone of one user is the same in the one time zone. Indicates the number of times the user has entered the road section when the user has passed the vicinity of the 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. It is a state showing the number of times that the user did not enter the road section when passing by.

By the way, the approach tendency determination unit 33 shown in FIG. 4 is based on the entry history information (combination of the entry count information and the non-entry count information) of one user, and the one user is in a road section at a place other than the pedestrian crossing. The approach tendency, which is the tendency to enter the road section (the tendency to enter the road section), is determined for each time zone. Hereinafter, the processing of the approach tendency determination unit 33 when determining the approach tendency corresponding to one time zone will be described.

First, the approach tendency determination unit 33 targets one record of the approach history information database at a predetermined timing. For example, the approach tendency determination unit 33 targets the record when the history update unit 32 updates the entry count information or the non-entry count information corresponding to one time zone of a certain record. The approach tendency determination unit 33 acquires the entry count information and the non-entry count 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 count information to the "total value of the approach count information and the non-enter count 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, it is based on the entry count information and the non-entry count information (entry count information: 3, non-entry count: 2) corresponding to the first time zone. The road section approach ratio calculated by the above 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 to the number of times the user has walked in the vicinity of the road section. Therefore, the larger the road section entry ratio for one road section, the stronger the tendency for the user 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 is for the pedestrian crossing. There is a weak tendency to enter the one road section at a place other than the above.

Next, the approach tendency determination unit 33 determines the approach tendency based on the calculated road section approach ratio. In the present 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 the tendency to enter the road section is strong at a place other than the pedestrian crossing, a weak level indicating that the tendency is weak, and a strong level and a weak level indicating that the tendency is weak. It is represented by a medium level, which indicates that it is in the middle of. When determining the approach tendency, the approach tendency determination unit 33 determines that the approach tendency is a strong level when the road section approach ratio is equal to or higher than the threshold value T1 (for example, “80%”), and the road section approach ratio is smaller than the threshold value T1. If it is below the threshold value T2 (for example, "20%" when the threshold value T1 is "80%"), the approach tendency is determined to be a weak level, and if the road section approach rate is below the threshold value T1 and is equal to or higher than the threshold value T2, the approach tendency is determined. Is judged 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 entry tendency determination unit 33, the value of the entry tendency information of each record of each entry history information database DB2 reflects the entry count information and the non-entry count information updated by the history update unit 32. It becomes a value.

By the way, the caution unit 34 shown in FIG. 4 identifies an individual located in the vicinity of one road section based on the personal position information acquired by the personal information acquisition unit 31, and the approach tendency of each identified individual. In a manner that reflects the above, the driver of the vehicle is alerted to pedestrians 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 each identified individual for the one road section. In this manner, the driver of the vehicle is alerted to pedestrians in the one road section. Further, 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 corresponds 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 of the vehicle, the driver of the vehicle is alerted to the pedestrians of the one road section. Hereinafter, the 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 turn the alert function on and off. 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 has been turned on to the alerting device 2. Then, while the caution function is on, the map screen display unit 12 alerts the information indicating the vehicle position detected by the vehicle position detection unit 11 (hereinafter, referred to as “vehicle position information”) at a predetermined cycle. It is transmitted to the device 2. Hereinafter, it is assumed that the attention-calling function of the vehicle-mounted device 3 is turned on, and the processing of the warning-calling unit 34 when the vehicle position information is received from the vehicle-mounted device 3 will be described.

First, the alerting unit 34 receives the vehicle position information via the communication unit 30 on the alerting device side. Next, the alerting unit 34 refers to the road data 401 and identifies a link existing around the vehicle position indicated by the vehicle position information (hereinafter, referred to as “vehicle position peripheral link”). 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. do.

Explaining the process for specifying the user ID of the user located in the vicinity of the link around the position of one own vehicle, as described above, the personal information database DB1 of each user accumulates the personal information of each user. Is remembered. In addition, personal-related information includes personal location 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 uses the user with the specified user ID (= located in the vicinity of the vehicle position peripheral link). Acquires personal location information included in the most recently received personal-related information 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 links around the position of the own vehicle, and identifies the record corresponding to the specified user ID among the records of each entry history information database DB2. Next, the alerting unit 34 acquires the approach tendency information corresponding to the time zone to which the current time belongs among the approach tendency information held by the specified record. Here, the approach tendency information acquired by the alerting unit 34 is information indicating the approach tendency of the user located in the vicinity of the link around the position of the own vehicle in the time zone to which the current time belongs.

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 user's current position, and the approach tendency information indicates that the user tends to enter the road section to the link around the vehicle position in the time zone to which the current belongs. This is the information to be shown.

After acquiring the personal position information and the approach tendency information of the users located in the vicinity of the vehicle position peripheral link, the attention alerting unit 34 generates the alerting instruction information. The alert instruction information is information instructing the map screen to display the pedestrian mark M2 (described later) in a manner described later, and includes a combination of personal position information and approach tendency information for each user. There is. In the present embodiment, the alerting instruction information includes personal position information and approach tendency information, but the alerting instruction information may not include such information itself. That is, the alerting instruction information may include information necessary for the map screen display unit 12 of the in-vehicle device 3 to display the pedestrian mark M2. For example, the image in which the pedestrian mark M2 is drawn may be included. It may be image data. After generating the alerting instruction information, the alerting unit 34 controls the alerting device side communication unit 30 to transmit the generated alerting instruction information to the vehicle-mounted device 3.

The map screen display unit 12 of the vehicle-mounted device 3 receives the warning instruction information via the vehicle-mounted 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 alerting instruction information.

FIG. 9 is a diagram showing an example of a map screen on which the own vehicle position mark M1 and the pedestrian mark M2 indicating the own vehicle position are displayed. As shown in FIG. 9, the pedestrian mark M2 is a circular mark filled 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 attention alert instruction information. That is, the map screen display unit 12 draws each of the pedestrian marks 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 according to 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 strong, and sets the color of the pedestrian mark M2 to yellow when the approach tendency is medium level. When the approach tendency is weak, 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, so that the actual position of the user and the approach tendency of the user are reflected 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. As a result, the alerting unit 34 alerts the driver of the vehicle regarding pedestrians.

Then, in the present embodiment, since the driver is alerted to the pedestrian in the above manner, the following effects are obtained. That is, the degree of caution that a driver should pay when driving is influenced by the approach tendency of pedestrians actually existing 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 consider the possibility that the pedestrian will jump out on the road on which the vehicle is traveling. This is because it is necessary to drive with high caution. Based on this, the driver can recognize not only the position but also the approach tendency of each user for the user located in the vicinity of the road section around the position of the own vehicle by referring to the pedestrian mark M2. Therefore, the driver can recognize that there is a pedestrian who has a strong tendency to approach the road section in the vicinity of the road section on which the vehicle is traveling or the road section in which the vehicle is scheduled to travel. When traveling on a road section, it is possible to take measures such as driving a vehicle with a higher degree of caution than when there are no pedestrians with a strong tendency to approach. That is, the driver can receive a warning that reflects 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 degree of caution to be paid when driving is accurate. Can be judged.

In particular, in the present embodiment, the approach history storage unit 42 stores the approach history information for each user (individual) for each road section. Further, the approach tendency determination unit 33 determines the approach tendency for each combination of the road section and the user based on the approach history information of each user in each road section. Then, the alerting unit 34 identifies a user located in the vicinity of one road section based on personal position information, and reflects the approach tendency of each specified user for the one road section. To alert the driver of the pedestrian in the one road section. Due to such a configuration, the following effects are obtained.

That is, it is assumed that the user's approach tendency differs for each road section. For example, in a specific road section, the user does not pass through the pedestrian crossing and is specific to the specific road section under the circumstances that the pedestrian crossing is in a distant place or a shortcut can be made by not using the pedestrian crossing. In some places, the road section is crossed frequently, while in other road sections, when crossing the road section, the pedestrian crossing may be crossed frequently. In such a case, the approach tendency for the user will be different for each road section. Based on this, in the present embodiment, when displaying the pedestrian mark M2 for a user located in the vicinity of a certain road section, the alerting unit 34 has a color that reflects the user's approach tendency for that road section. The pedestrian mark M2 is displayed. With 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 caution to be paid when driving, considering that the approach tendency of the user differs depending on the road section. ..

Further, in the present embodiment, the approach history storage unit 42 stores the approach history information for each combination of the road section and the user for each time zone. Further, the approach tendency determination unit 33 determines the approach tendency in each time zone for each combination of the road section and the user. Then, the alerting unit 34 identifies a 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 to pedestrians in the one road section. Due to such a configuration, the following effects are obtained.

That is, it is assumed that the user's approach tendency changes depending on the time zone. For example, even for the same road section, the user frequently crosses the road section in the morning and noon without passing through the pedestrian crossing, while the user frequently crosses the pedestrian crossing at night when the visibility is poorer than in the morning and noon. It may pass. In such a case, the approach tendency for the user will be different for each time zone. Based on this, according to the above configuration, the driver can grasp the approach tendency of the user corresponding to the time zone to which the current time belongs, and the approach tendency of the user may change depending on the time zone. You can accurately determine the degree of caution you should pay when driving.

FIG. 10 is a flowchart showing 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, the flowchart FA shows an example of the processing of the map screen display unit 12 of the vehicle-mounted device 3, and the flowchart FB shows an example of the processing of the alerting unit 34 of the alerting device 2. The process shown in the flowchart of FIG. 10 is executed with the in-vehicle device 3 transmitting the above-mentioned own vehicle position information to the alert device 2 as a trigger.

As shown in the flowchart FA, the map screen display unit 12 of the in-vehicle device 3 transmits the own vehicle position information to the alert device 2 (step SA1). As described above, the map screen display unit 12 transmits the own vehicle position information at a predetermined cycle while the attention 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 link around the position of the own vehicle (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 the personal location information of each user (step SB4).

Next, the alerting unit 34 acquires the approach tendency information of the user located in the vicinity of the link around the position of the own vehicle (step SB5). Next, the alerting unit 34 generates alerting instruction information including personal position 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 vehicle-mounted device 3 receives the attention alert instruction information (step SA2). Next, the map screen display unit 12 adds the pedestrian mark M2 to the display screen based on the received alerting instruction information (step SA3).

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

As described in detail above, the alert device 2 according to the present embodiment provides entry history information including the history of entry of the road section at a place other than the pedestrian crossing that the user has made in the past for each user (individual). It is stored, and 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. Then, the alert device 2 according to the present embodiment identifies a user located in the vicinity of one road section based on personal position information, and reflects the approach tendency of each identified user. To alert the driver of the pedestrian in the one road section.

According to this configuration, as described above, the driver can receive a warning that reflects the approach tendency of each individual who is actually in the vicinity of the road section when the vehicle is running. Based on the approach tendency of, the degree of caution to be paid when driving can be accurately determined.

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

FIG. 12 is a diagram showing 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 of the entry history information database DB2 stored in the entry history storage unit 42 has approach history information and approach tendency information for each time zone. On the other hand, one record of the approach history information database DB2A according to the present embodiment has the approach history information and the approach tendency information in a state where the entry history information database DB2A is not classified by the time zone.

In the present embodiment, when the history update unit 32A determines that one user has entered a road section in one road section regardless of the time zone, the history update unit 32A is an approach history information database corresponding to the one road section. The entry count information for the one user in DB2A is increased by "1". On the other hand, when the history update unit 32A determines that the road section has not been entered, the history update unit 32A increases the non-entry count information by "1". Further, the approach tendency determination unit 33A determines the approach tendency based on the entry count information and the non-entry count information that are not classified for each time zone. Further, when displaying the pedestrian mark M2 related to one user on the map screen display unit 12 of the in-vehicle device 3, the caution unit 34A displays the pedestrian mark M2 according to one user in a color corresponding to an 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 regarding the pedestrian by the alert unit 34A, and based on the approach tendency of each user. , You can accurately judge the degree of caution you should pay when driving.

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

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

In the present embodiment, when the history update unit 32B determines that the road section has been entered by one user regardless of the road section, the history update unit 32B obtains the entry count information of the one user in the entry history information database DB2B as "1". "To increase. On the other hand, when the history update unit 32B determines that the road section has not been entered, the non-entry count information is increased by "1". As a result of the above processing being performed by the history update unit 32B, the entry history information (combination of the entry count information and the non-entry count information) of the approach history information database DB2B is obtained by the user other than the pedestrian crossing in the past regardless of the road section. It is information that shows the history of entering the road section at the place.

Further, the approach tendency determination unit 33B determines the approach tendency based on the approach count information and the non-approach count information that are not classified for each road section. The approach tendency determined by the approach tendency determination unit 33B is the approach tendency for the road in general for each user. Further, when displaying the pedestrian mark M2 related to one user on the map screen display unit 12 of the in-vehicle device 3, the caution unit 34B displays the pedestrian mark M2 in a color corresponding to the approach tendency that is not classified for each road section. ..

Here, there are humans who have a strong tendency to enter the road at places other than the pedestrian crossing, and those who do 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 the pedestrian crossing, regardless of the road section, the driver should be more careful than when there is no person around the position of the vehicle. You need to carry and drive. Based on the above, according to the configuration of the third embodiment, the driver refers to the road in general for each of the users who actually exist in the vicinity of the vehicle position, based on the warning regarding the pedestrian by the warning unit 34B. The approach tendency can be recognized, and the degree of caution to be paid when driving can be accurately determined based on the approach tendency of each user to the road in general.

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

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

When the pedestrian mark M2 related to one user is displayed on the map screen display unit 12 of the in-vehicle device 3, the attention alerting unit 34C first implements the pedestrian mark M2 based on the approach tendency in the approach history information database DB2 for each road section. Similar to the form, the color of the pedestrian mark M2 is displayed in a color corresponding to the approaching tendency. Further, in the present embodiment, the alerting unit 34C is a user having a strong general approach tendency regardless of the road section based on the general approach tendency in the general approach history information database DB2C (for roads in general, the road is located at a place other than the pedestrian crossing). For users who have a strong tendency to enter the site, clearly state that fact.

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

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 to more accurately determine the degree of caution to be paid when driving.

<Fifth Embodiment>
Next, the fifth embodiment will be described. FIG. 16 is a block diagram showing a functional configuration example of the alert device 2D according to the fifth embodiment. As is clear from the comparison between FIGS. 16 and 4, the caution 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. It has an approach tendency determination unit 33D, and has a caution unit 34D in place of the caution unit 34. Further, the caution device 2D has an approach history storage unit 42D instead of the approach history storage unit 42, and the approach history storage unit 42D is stored in the approach history information database DB2 for each road section according to the first embodiment. In addition, the entry history information database DB2D for each attribute of the road section is stored.

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 attributes of the road section are not limited to the combination of the number of lanes in the road section illustrated in the present embodiment and the presence or absence of sidewalks in the road section. The attribute of the road section may be any characteristic of the road 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 showing an example of the contents of the entry history information database DB2D for each attribute. As shown in FIG. 17, the attribute-based entry history information database DB2D has a record for each user, and each record has a user ID, attribute-based entry history information, and attribute-based entry tendency information as information. .. The entry history information by attribute includes the entry count information by attribute and the non-entry count information by attribute. Each information will be described later.

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

More specifically, when the history update unit 32D updates the approach history information corresponding to one road section for one user, the history update unit 32D refers to the road data 401, the lane number information related to the one road section, and the sidewalk. Acquire presence / absence information. Next, the history updating unit 32D recognizes the attribute of the one road section (in the present embodiment, the combination of the number of lanes and the presence / absence of the sidewalk) based on the acquired lane number information and the 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 the record corresponding to the one user among the records in the database. Next, the history update unit 32D increases the number of times of entry by attribute by "1" when it is determined that the road section has entered the one road section with respect to the entry history information by attribute of the specified record, and the road section. If it is determined that there has been no entry, the non-entry count information for each attribute is increased by "1". As a result of the above processing being performed by the history update unit 32D, in the entry history information database DB2D for each attribute corresponding to one attribute, for each user, the user has in the past a road section of the one attribute at a place other than the pedestrian crossing. The entry history information for each attribute, which indicates the history of entry into, is stored.

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

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

Here, it is assumed that the user's approach tendency may change depending on the attributes of the road section. For example, depending on the user, there is a stronger tendency to enter the road section than when there is a sidewalk, when there is one lane on both sides, and when there is a tendency to enter the road section compared to when there is one lane on each side. May be strong. Based on this, according to the configuration of the present embodiment, the driver can recognize the approach tendency of each road section of the user who actually exists in the vicinity of the road section around the position of the own vehicle. If a user who has a strong tendency to enter a road section on a road with a specific attribute is located near the road with the specific attribute, he / she can recognize that fact and pay more accurately when driving. Can judge the degree of attention to be taken.

In the first embodiment described above, the screen displayed on the display 5 of the vehicle-mounted device 3 based on the alerting instruction information transmitted by the alerting unit 34 is specifically illustrated with reference to FIG. However, the screen displayed on the display 5 of the vehicle-mounted device 3 is not limited to the screen illustrated in FIG. For example, in the first embodiment, when the approach tendency is a weak level, the blue pedestrian mark M2 is displayed on the map screen, but when the approach tendency is a weak level, the pedestrian mark is displayed. A configuration that does not display M2 may be used. Further, for example, a road section in which a user having a strong approach tendency exists in the vicinity and a road section in which a user having a strong approach tendency does not exist in the vicinity may be drawn in different colors. In this case, the pedestrian mark M2 may or may not be displayed. Further, the device for displaying the information regarding the alert is not limited to the display 5, for example, the information may be displayed on the windshield by a head-up display, and the information may be displayed on a display device other than the display 5, for example. Guidance may be provided by being displayed. The above is the same for other embodiments.

Further, in the first embodiment described above, the alerting unit 34 alerts by displaying on the display 5. In this regard, when the vehicle-mounted device 3 has a function of outputting voice, the alerting unit 34 may be configured to alert by voice instead of or in combination with the display. For example, when a user with a strong tendency to enter is located near the road section around the position of the own vehicle, the in-vehicle device 3 tells the in-vehicle device 3 that "there is a person who tends to jump out on the road. increase. Please be careful. ] Etc. may be output to call attention. The above is the same for other embodiments.

Further, in the first embodiment described above, the alerting unit 34 acquires the vehicle position information from the in-vehicle device 3 and displays the pedestrian mark M2 for the user located in the vicinity of the road section around the vehicle position. I was letting you. In this regard, the alerting unit 34 detects when the vehicle newly enters the road section and displays the pedestrian mark M2 for the user located in the vicinity of the newly entered road section. It may be configured to be made to. Further, when the in-vehicle device 3 has a navigation function of searching for a route to the destination (hereinafter, referred to as "guidance route") and guiding the vehicle, the alerting unit 34 communicates with the in-vehicle device 3 to communicate with the in-vehicle device 3. Information indicating the guide route may be acquired, and the pedestrian mark M2 of the user located in the vicinity of the road section may be displayed as appropriate for the road section included in the guide route. The above is the same for other embodiments.

Further, in the first embodiment described above, the approach history storage unit 42 is configured to store the approach history information database DB2 for each road section in which the link is defined. In this regard, it is not necessary to store the approach history information database DB2 for all the road sections in which the links are defined, and the approach history information database DB2 may be stored only for the limited road sections. The limited road section is, for example, a main road such as a national highway, and a road section where many accidents occur. Further, the road section may be registered for each driver. In this case, the history updating unit 32, the approach tendency determination unit 33, and the alerting unit 34 each execute the above-described processing for the limited road section. The above is the same for 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 for each of the users during the latest fixed period at regular intervals. Therefore, the approach history information was updated. Regarding this point, the history updating unit 32 may be configured to execute processing in real time in response to receiving information of personal-related information from each mobile terminal 4. The above is the same for other embodiments.

Further, in the above-described first embodiment, a method for determining whether or not a road section has been entered in one road section by the history updating unit 32 has been specifically described. However, the method described is only an example, and the history updating unit 32 may be configured to determine whether or not the road section has been entered by another method. The above is the same for other embodiments.

Further, in the first embodiment described above, the approach tendency determination unit 33 calculates the road section approach ratio and determines the approach tendency based on the calculated road section approach ratio. In this regard, the approach tendency determination unit 33 may be configured to 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 determination unit 33 may be configured to determine that the larger the value, the stronger the approach tendency, based on the value of the approach count information. .. Further, the approach tendency determination unit 33 may be configured to determine that the larger the value, the stronger the approach tendency, based on the value of the difference between the approach count information and the non-entry count information. The above is the same for other embodiments.

In addition, each of the above embodiments is merely an example of embodiment of 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 its gist or its main features.

2, 2A, 2B, 2C, 2D Attention device 31 Personal information acquisition unit 32, 32A, 32B, 32C, 32D History update unit 33, 33A, 33B, 33C, 33D Entry tendency determination unit 34, 34A, 34B, 34C , 34D Attention unit 42, 42A, 42B, 42C, 42D Entry history storage unit

Claims (10)

For each individual, an entry history storage unit that stores entry history information indicating the history of an individual entering a road section at a place other than a pedestrian crossing in the past,
Based on the entry history information of each individual, an approach tendency determination unit that determines an approach tendency that an individual tends to enter a road section at a place other than a pedestrian crossing, and an approach tendency determination unit.
The personal information acquisition department that acquires personal location information indicating the individual's current location from a terminal carried by the individual,
Based on the personal position information, an individual located in the vicinity of a road section existing around the vehicle is identified, and the vehicle driver is referred to the vehicle in a manner reflecting the approach tendency of each identified individual. It is equipped with a warning section that calls attention to pedestrians in the surrounding road sections.
The approach history storage unit stores the approach history information for each individual for each road section.
The approach tendency determination unit determines the approach tendency for each combination of the road section and the individual based on the approach history information of each individual in each road section.
The attention calling part, based on the personal position information to identify individuals located in the vicinity of the road section existing around the vehicle, reflecting the approach tendency for those the road section of each individual identified in embodiments, caution and wherein relative driver of the vehicle, to make the alert on pedestrian skilled the road section. For each individual, an entry history storage unit that stores entry history information indicating the history of an individual entering a road section at a place other than a pedestrian crossing in the past,
Based on the entry history information of each individual, an approach tendency determination unit that determines an approach tendency that an individual tends to enter a road section at a place other than a pedestrian crossing, and an approach tendency determination unit.
The personal information acquisition department that acquires personal location information indicating the individual's current location from a terminal carried by the individual,
Based on the personal position information, an individual located in the vicinity of a road section existing around the vehicle is identified, and the vehicle driver is referred to the vehicle in a manner reflecting the approach tendency of each identified individual. It is equipped with a warning section that calls attention to pedestrians in the surrounding road sections.
The entry history storage unit stores the entry history information for each individual for each time zone.
The approach tendency determination unit determines the approach tendency for each combination of the time zone and the individual based on the approach history information of each individual in each time zone.
Based on the personal position information, the alerting unit identifies an individual located in the vicinity of a road section existing around the vehicle, and reflects the approach tendency for the time zone to which the current time of each identified individual belongs. in the embodiment, with respect to the driver of the vehicle, attention evoked device you and performs alert on pedestrian skilled the road section. For each individual, an entry history storage unit that stores entry history information indicating the history of an individual entering a road section at a place other than a pedestrian crossing in the past,
Based on the entry history information of each individual, an approach tendency determination unit that determines an approach tendency that an individual tends to enter a road section at a place other than a pedestrian crossing, and an approach tendency determination unit.
The personal information acquisition department that acquires personal location information indicating the individual's current location from a terminal carried by the individual,
Based on the personal position information, an individual located in the vicinity of a road section existing around the vehicle is identified, and the vehicle driver is referred to the vehicle in a manner reflecting the approach tendency of each identified individual. It is equipped with a warning section that calls attention to pedestrians in the surrounding road sections.
The approach history storage unit further stores, for each attribute of the road section, attribute-based entry history information indicating the history of an individual entering the road section at a place other than the pedestrian crossing in the past.
In the approach tendency determination unit, an individual enters a road section at a place other than a crosswalk for each combination of the attribute of the road section and the individual based on the entry history information for each individual of the attribute of each road section. Judge the approach tendency by attribute, which is the tendency to
The alerting unit is characterized in that when alerting the driver of a vehicle regarding pedestrians in a road section existing around the vehicle, the alerting unit reflects the approach tendency by attribute. It is that Note arouse apparatus. The personal-related information acquisition unit acquires movement direction information indicating the direction in which the individual moves together with the personal position information at intervals from the terminal carried by the individual.
Based on the personal position information and the movement direction information of one individual, it is determined whether or not the one individual has entered the road section at a place other than the pedestrian crossing, and based on the determination result, the entry history memory is stored. The alerting device according to any one of claims 1 to 3 , further comprising a history updating unit that updates the entry history information stored by the unit. The movement direction information includes information indicating the direction in which the individual has moved and information indicating the magnitude of acceleration during movement.
The history update unit
Based on the personal position information and the movement direction information of one individual, the one individual has an acceleration equal to or higher than a threshold value in a direction intersecting the extending direction of the road section at a place other than a pedestrian crossing of a certain road section. It is determined whether or not the vehicle has moved, and if it is determined that the individual has moved, it is determined that the individual has entered the road section at a place other than the pedestrian crossing.
The alerting device according to claim 4, wherein the alerting device is characterized by the above. The alerting unit, to the driver of the vehicle, when performing alert on Pedestrian road section existing around the vehicle, if the approach tendency is strong individuals are in the vicinity of those the road section, The alerting device according to any one of claims 1 to 5 , which alerts a pedestrian to pay attention to a pedestrian with a higher degree of caution as compared with the case where the vehicle does not have it. The alerting device according to any one of claims 1 to 6 , wherein the alerting unit communicates with an in-vehicle device of the vehicle to clearly indicate the position of the individual having a strong tendency to enter on a map. .. For each individual, based on the entry history storage unit that stores the entry history information indicating the history of the individual entering the road section at a place other than the pedestrian crossing in the past, and the entry history information of each individual, each individual Is an alerting method using an alerting device provided with an approaching tendency determining unit for determining an approaching tendency in which is a tendency to enter a road section at a place other than a pedestrian crossing.
The first step in which the personal information acquisition unit of the alert device acquires personal location information indicating the current position of the individual from a terminal carried by the individual, and
The alerting unit of the alerting device identifies an individual located in the vicinity of a road section existing around the vehicle based on the personal position information, and reflects the approaching tendency of each identified individual. Including a second step of alerting the driver of the vehicle about pedestrians in the road section around the vehicle.
The approach history storage unit stores the approach history information for each individual for each road section.
The approach tendency determination unit determines the approach tendency for each combination of the road section and the individual based on the approach history information of each individual in each road section.
In the second step, the alerting unit identifies an individual located in the vicinity of a road section existing around the vehicle based on the personal position information, and the approach to the road section of each identified individual. A method of alerting a driver of a vehicle in a manner reflecting a tendency, which alerts the driver of a pedestrian in the road section. For each individual, based on the entry history storage unit that stores the entry history information indicating the history of the individual entering the road section at a place other than the pedestrian crossing in the past, and the entry history information of each individual, each individual Is an alerting method using an alerting device provided with an approaching tendency determining unit for determining an approaching tendency in which is a tendency to enter a road section at a place other than a pedestrian crossing.
The first step in which the personal information acquisition unit of the alert device acquires personal location information indicating the current position of the individual from a terminal carried by the individual, and
The alerting unit of the alerting device identifies an individual located in the vicinity of a road section existing around the vehicle based on the personal position information, and reflects the approaching tendency of each identified individual. Including a second step of alerting the driver of the vehicle about pedestrians in the road section around the vehicle.
The entry history storage unit stores the entry history information for each individual for each time zone.
The approach tendency determination unit determines the approach tendency for each combination of the time zone and the individual based on the approach history information of each individual in each time zone.
In the second step, the alerting unit identifies an individual located in the vicinity of a road section existing around the vehicle based on the personal position information, and refers to a time zone to which the current time of each identified individual belongs. To alert the driver of the vehicle regarding pedestrians in the road section in a manner that reflects the approaching tendency of
A method of calling attention that is characterized by that. For each individual, based on the entry history storage unit that stores the entry history information indicating the history of the individual entering the road section at a place other than the pedestrian crossing in the past, and the entry history information of each individual, each individual Is an alerting method using an alerting device provided with an approaching tendency determining unit for determining an approaching tendency in which is a tendency to enter a road section at a place other than a pedestrian crossing.
The first step in which the personal information acquisition unit of the alert device acquires personal location information indicating the current position of the individual from a terminal carried by the individual, and
The alerting unit of the alerting device identifies an individual located in the vicinity of a road section existing around the vehicle based on the personal position information, and reflects the approaching tendency of each identified individual. Including the second step of alerting the driver of the vehicle about pedestrians in the road section around the vehicle.
The approach history storage unit further stores, for each attribute of the road section, attribute-based entry history information indicating the history of an individual entering the road section at a place other than the pedestrian crossing in the past.
In the approach tendency determination unit, an individual enters a road section at a place other than a crosswalk for each combination of the attribute of the road section and the individual based on the entry history information for each individual of the attribute of each road section. Judge the approach tendency by attribute, which is the tendency to
In the second step, the alerting unit alerts the driver of the vehicle in a manner that reflects the approach tendency by attribute when alerting the driver of the pedestrian in the road section existing around the vehicle. I do
A method of calling attention that is characterized by that.

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