JP2008129624A - Information preparation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information preparation device changing and setting a school zone and changing the risk level of a warning guide in the school zone. <P>SOLUTION: CPU 11 of an information distribution center 3 reads the number of pedestrians during a commute time (for example, 7:00 a.m.-8:30 a.m. or 3:30 p.m.-5:00 p.m.) of students (pedestrians), such as elementary school students, junior high school students corresponding to each link around each school zone all over the country and extracts school commute links (passage links) through which the students (pedestrians), such as elementary school students, junior high school students are passing. The CPU 11 sets a predetermined area (for example, a range of about 50m-100m on both sides along the link) including the school commute links as a commute area (additional area), adds it to each school zone, and again stores it in a center side school zone DB 16 (S116:YES-S118). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an information creating apparatus that sets a predetermined area centered on a school as a school zone.

In recent years, when a predetermined area centered on a school is set as a school zone and the vehicle is traveling on a road in this school zone, the guidance for alerting driving and the deceleration of the vehicle based on the school attendance date and time information A travel guidance device having a control means for performing control has been proposed (see, for example, Patent Document 1).
JP 2002-250632 A (paragraphs (0016) to (0031), FIGS. 1 to 4)

  However, the school zone described in Patent Document 1 described above is set in the region only at the stage of creating the map database, and is not changed thereafter. Also, in the school zone, warning guidance is set as a uniform risk level, but in reality there are places and times where pedestrians do not pass even in the school zone, and the conventional technology is more than necessary. There is a problem that warning guidance and vehicle deceleration control are performed. In such a case, there is a problem that the driver may feel troublesome about the school zone guidance or the like, or may not trust the guidance for alerting.

  Therefore, the present invention has been made to solve the above-described problems, and it is possible to change and set the school zone in accordance with the pedestrian's traffic condition, and to alert the guidance in the school zone. It is an object of the present invention to provide an information creation device that can change the risk level.

In order to achieve the above object, an information creating apparatus according to claim 1 includes a school zone storage means (16) for storing a predetermined area centered at a school as a school zone, and movement information of pedestrians around the school zone. Movement information collecting means (17, 5, 6) for collecting;
An additional area setting means (10) for setting an additional area to be added to the school zone based on the movement information; and a school zone addition control means (10) for controlling to add the additional area to the school zone; , Provided.

  The information creating apparatus according to claim 2 collects school zone storage means (16) for storing a predetermined area centered at a school as a school zone, and movement information of a pedestrian passing through the school zone. Movement information collecting means (17, 5, 6), non-passing area setting means (10) for setting a non-passing area where the pedestrian does not pass for a predetermined number of days or more based on the moving information, and non-passing area from the school zone School zone deletion control means (10) for controlling to delete the traffic area.

  An information creation device according to claim 3 is the information creation device (3) according to claim 1 or claim 2, wherein the navigation device is located in the surrounding school zone where the navigation device is located based on a request from the navigation device. Distribution means (10, 17) for distributing area information representing an area to the navigation device is provided.

  In addition, the information creation device according to claim 4 collects school zone storage means (16) for storing a predetermined area centered at a school as a school zone, and movement information of a pedestrian passing through the school zone. A movement information collecting means (17, 5, 6) and a risk level setting means (10) for setting a risk level for each link in the school zone based on the movement information. Features.

  An information creating apparatus according to claim 5 is the information creating apparatus (3) according to claim 4, wherein the pedestrian passes through each link in the school zone at predetermined time intervals based on the movement information. Pedestrian number calculating means (10) for calculating the number, and the risk level setting means (10) calculates the risk level based on the number of pedestrians passing every predetermined time in each school zone. It is characterized in that it is set for the link every predetermined time.

  The information creation device according to claim 6 is the information creation device (3) according to claim 4 or 5, wherein the risk level setting means (10) is provided for each link around the school zone. The lowest risk level representing the lowest level is set.

  An information creation device according to claim 7 is the information creation device (3) according to any one of claims 4 to 6, wherein the navigation device is located around the location where the navigation device is located based on a request from the navigation device. Distribution means (10, 17) for distributing risk level information representing the risk level set for each link in the school zone to the navigation device is provided.

  Furthermore, the information creation apparatus according to claim 8 is the information creation apparatus (3) according to any one of claims 1 to 7, wherein the movement information collection means is a terminal with a GPS function carried by the pedestrian. The movement information is collected based on the terminal position information collected from the device (6).

In the information creation apparatus according to the first aspect having the above-described configuration, pedestrian movement information around the school zone is collected, and an additional area to be added to the school zone is set based on the movement information. Then, this additional area is added to the school zone and stored.
As a result, the area of the school zone can be enlarged and changed according to the actual traffic conditions of pedestrians (for example, elementary school students and junior high school students) who enter the school zone from outside the school zone. It becomes possible.

Further, in the information creating apparatus according to claim 2, movement information of pedestrians who pass through the school zone is collected, and a non-passage area where the pedestrians do not pass for a predetermined number of days or more is set based on the movement information. The non-passing area is deleted from the school zone and stored.
As a result, it is possible to delete and change the non-passing areas where pedestrians do not pass according to the actual traffic conditions of pedestrians (for example, elementary school students and junior high school students) in the school zone. It becomes.

  According to a third aspect of the present invention, in accordance with a request from the navigation device, area information representing the area of the surrounding school zone where the navigation device is located is distributed to the navigation device. As a result, the navigation device can receive the area information of the school zone that is changed according to the pedestrian traffic conditions in and around the school zone, and can notify the school zone more accurately. It becomes possible.

Moreover, in the information preparation apparatus which concerns on Claim 4, the movement information of the pedestrian who passes in the school zone is collected, and the pedestrian's passing attention is required for each link in the school zone based on this movement information Set the appropriate risk level.
This makes it possible to change the level of alert guidance in the school zone corresponding to the risk level set for each link in the school zone, and provide highly reliable alert guidance. Is possible.

Moreover, in the information preparation apparatus which concerns on Claim 5, the number of pedestrians who pass every predetermined time with respect to each link in a school zone based on movement information is calculated. A risk level is set for each link in the school zone at each predetermined time based on the number of pedestrians passing every predetermined time.
As a result, it is possible to change the level of alert guidance in the school zone corresponding to the risk level set for each link in the school zone at a predetermined time. It is possible to provide a high level of alerting guidance.

  In the information creating apparatus according to the sixth aspect, the lowest risk level indicating the lowest level that requires pedestrian traffic attention is set for each link around the school zone. This makes it possible to change the level of alerting guidance within the school zone and the vicinity of the school zone, and to perform alerting guidance with high reliability.

  Further, in the information creating device according to claim 7, risk level information indicating the risk level set for each link in the surrounding school zone where the navigation device is located based on a request from the navigation device. Is distributed to the navigation device. As a result, the navigation device acquires risk level information representing the risk level set for each link in the surrounding school zone where the navigation device is located, and provides more accurate alerting guidance. Is possible.

  Furthermore, in the information production apparatus which concerns on Claim 8, movement information is collected based on the terminal position information collected from the terminal device with a GPS function which a pedestrian carries. Thereby, based on the position information and time information of the terminal device with GPS function, it is possible to collect the position information for each predetermined time at each link through which a pedestrian (for example, an elementary school student or a junior high school student) passes. Thus, it is possible to accurately change and set the school zone area based on the accurate movement route of the pedestrian. In addition, the number of pedestrians passing through each link in the school zone is calculated every predetermined time based on the position information and time information of the terminal device with GPS function, and the risk level for each link is accurately changed. It becomes possible to set, and it becomes possible to perform a more reliable alerting guidance.

  Hereinafter, an information creation device according to the present invention will be described in detail with reference to the drawings based on an embodiment in which a navigation system is embodied.

  First, a schematic configuration of the navigation system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation system 1 according to the present embodiment.

  As shown in FIG. 1, the navigation system 1 according to the present embodiment delivers a navigation device 2, update information for updating map information to the navigation device 2, area information representing an area of a school zone described later, and the like. An information distribution center 3 as an information creation device and a network 4 are basically configured. The navigation device 2 and the information distribution center 3 are configured to be able to transmit and receive various types of information via the network 4.

  In addition, a GPS server 5 is connected to the network 4, and the information distribution center 3 obtains position information and time information of pedestrians on each link through which pedestrians such as elementary school students and junior high school students pass. It is configured to be able to receive regularly (for example, every 24 hours, every week, every month, etc.).

The GPS server 5 includes a microprocessor that performs calculations, a ROM that stores programs for causing the microprocessor to execute each process, a RAM that stores various data such as calculation results, a hard disk, and the like.
The GPS server 5 is periodically (for example, every 30 seconds, every 1 minute, every 5 minutes, etc.) from the mobile phone 6 carried by each pedestrian such as an elementary school student or a junior high school student via the mobile phone network. .) Received information on the current location and current time of the mobile phone 6 and the identification ID that are transmitted, identify the pedestrian who owns the mobile phone 6 based on the identification ID, and identify the pedestrian Correspondingly, the current location and current time of the mobile phone 6 are sequentially stored in the hard disk. When there is a transmission request from the information distribution center 3, the position information and time information of each pedestrian such as an elementary school student or a junior high school student stored in the hard disk is transmitted to the information distribution center 3. .

A mobile phone 6 carried by each pedestrian student such as an elementary school student or a junior high school student receives a communication device 6A for connection to a mobile phone network and radio waves generated by an artificial satellite, thereby allowing mobile phones on the earth. 6 is a GPS (Global Positioning System) 6B that detects the current location and the current time. Then, the mobile phone 6 periodically indicates the current location and the current time detected by the GPS 6B via the mobile phone network (for example, every 30 seconds, every 1 minute, every 5 minutes, etc.). Is transmitted to the GPS server 5 together with the identification ID given in advance.
The configuration of the navigation device 2 will be described in detail later with reference to FIG.

  As shown in FIG. 1, the information distribution center 3 includes a server 10, a center-side map information database (center-side map information DB) 14 as a map information recording unit connected to the server 10, and a navigation update history information database (navigation). Update history information DB) 15, center side school zone database (center side school zone DB) 16, and center side communication device 17. In addition, the server 10 is based on requests from the navigation device 2 and the arithmetic unit that controls the entire server 10 and the CPU 11 as the control unit, the RAM 12 that is used as a working memory when the CPU 11 performs various arithmetic processes. Of the map information stored in the navigation device 2, the update information for updating the map information of the predetermined area to the new version of the map information is extracted from the center side map information DB 14 and distributed to the navigation device 2. An internal storage device such as a ROM 13 in which various control programs for performing information update processing, school zone area increase / decrease setting processing, school zone risk setting processing (see FIG. 3), etc. are recorded, and time measurement Timer 19 is provided. An MPU or the like can be used instead of the CPU 11.

  In the center-side map information DB 14, update map information 14A, which is map information that is the basis for updating the map information created by the information distribution center 3 and stored in the navigation device 2, is classified for each version. Is remembered. Furthermore, update information for updating part or all of the map information stored in the current navigation device 2 to the update map information 14A is also stored. Here, the version is creation time information for specifying the time when the map information is created, and the time when the map information is created can be specified by referring to the version.

  The update map information 14A stored in the center-side map information DB 14 stores various information necessary for route guidance and map display by the navigation device 2, for example, for displaying a map. Map display data, intersection data related to each intersection, node data related to node points, link data related to roads (road links), which are a kind of facility, search data for searching for routes, various types of facilities such as elementary schools, junior high schools, etc. It consists of facility data related to POI (Point of Interest) such as schools and stores, search data for searching points, and the like.

  Here, the map display data is divided into 4 divisions (length 1/2), 16 divisions (1/4), and 64 divisions (1/8) based on a secondary mesh partitioned by about 10 km × 10 km. Each unit is set so that the data amount of each unit is approximately the same level. The smallest 64 division size unit is about 1.25 km square.

  The link data includes the width of the road to which the link belongs, the gradient, the cant, the bank, the road surface condition, the number of lanes of the road, Data representing the number of lanes decreasing, width narrowing, railroad crossings, etc. for corners, data on radius of curvature, intersections, T-junctions, corner entrances and exits, etc. Data representing uphill roads are recorded for road types, including roads such as national roads, prefectural roads, and narrow streets, as well as toll roads such as national highways, urban highways, general toll roads, and toll bridges. The Furthermore, regarding toll roads, data relating to entrance roads (rampways), toll gates (interchanges) and the like of toll roads are recorded.

  In addition, as search data, data used when searching and displaying a route to a set destination is recorded, and the distance and road width of a link that forms a right / left turn or road when passing through a node. The cost data used to calculate the weight of each node determined by the road type or the like (hereinafter referred to as “cost”), and the route selected by the route search are displayed on the liquid crystal display 25 of the navigation device 2 (see FIG. 2). ) Of the route display data for displaying on the map.

  In addition, as facility data, data related to POIs such as various schools such as elementary schools and junior high schools, hotels, hospitals, gas stations, parking lots, and tourist facilities in each region are recorded together with IDs for identifying POIs. The center side map information DB 14 also records voice output data for outputting predetermined information by the speaker 26 (see FIG. 2) of the navigation device 2.

  Then, the information distribution center 3 uses the latest version of the update map information 14A stored in the center-side map information DB 14 at the timing when the request is received from the navigation device 2, and the navigation device 2 uses the latest version of the update map information 14A. Update the map information stored in.

  On the other hand, in the navigation update history information DB 15, information related to the update history in which the map information stored in the navigation device 2 has been updated so far is stored together with the navigation identification ID that identifies the navigation device 2. As the update history, which version of map information is used for each link data or node data that specifically constitutes map information is stored, and a new one is updated every time the map information of the navigation device 2 is updated. Rewritten to update history.

In addition, the center-side school zone DB 16 stores a predetermined area centered on each school as a school zone with reference to school districts of each school such as kindergartens, elementary schools, and junior high schools in each region. In addition, as will be described later, the center-side school zone DB 16 has a number of pedestrians who pass through each link in each school zone every predetermined time (for example, every 15 minutes, every 30 minutes, etc.). Are periodically updated and stored.
And as will be described later, the school zone is expanded or reduced based on the traffic conditions of pedestrians such as elementary school students and junior high school students who go to school in each school zone from and around the school zone, And stored in the center-side school zone DB 16 (see FIG. 4). The center-side school zone DB 16 stores link information related to the risk level set for each link in each school zone (see FIG. 5).

  Then, the information distribution center 3 receives the area information indicating the area of the school zone existing in the periphery of the navigation device 2 stored in the center side school zone DB 16 and the information in the school zone at the timing requested from the navigation device 2. The risk level information indicating the risk level set for each link is selected and distributed (see FIG. 10).

  The network 4 includes, for example, a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a mobile phone line network, a telephone line network, a public communication line network, a dedicated communication line network, a communication line network such as the Internet, etc. Can be used.

  Next, a schematic configuration of the navigation device 2 constituting the navigation system 1 according to the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing the navigation device 2 according to the present embodiment.

  As shown in FIG. 2, the navigation device 2 according to the present embodiment is based on a current location detection processing unit 21 that detects the current position of the host vehicle, a data recording unit 22 that records various data, and input information. The navigation control unit 23 that performs various arithmetic processes, the operation unit 24 that receives operations from the operator, the liquid crystal display 25 that displays information such as a map to the operator, and voice guidance related to route guidance are output. And a communication device 27 that communicates with the road traffic information center (VICS (registered trademark)), the information distribution center 3 and the like via a mobile phone network or the like. The navigation control unit 23 is connected to a vehicle speed sensor 28 that detects the traveling speed of the host vehicle.

  Hereinafter, each component constituting the navigation device 2 will be described. The current position detection processing unit 21 includes a GPS 31, a direction sensor 32, a distance sensor 33, an altimeter (not shown), and the like. It is possible to detect a direction, a distance to a target (for example, an intersection), and the like.

  Specifically, the GPS 31 detects the current location and current time of the vehicle on the earth by receiving radio waves generated by artificial satellites. The azimuth sensor 32 includes a geomagnetic sensor, a gyro sensor, an optical rotation sensor attached to a rotating portion of a steering wheel (not shown), a rotation resistance sensor, an angle sensor attached to a wheel, or the like. Detect the direction of the vehicle. The distance sensor 33 measures, for example, the rotational speed of a wheel (not shown) of the host vehicle, detects the distance based on the measured rotational speed, measures the acceleration, and integrates the measured acceleration twice. Thus, it is composed of a sensor or the like for detecting the distance, and detects the moving distance of the own vehicle.

  The data recording unit 22 includes an external storage device and a hard disk (not shown) as a storage medium, a navigation side map information database (navigation side map information DB) 37 stored in the hard disk, a school zone database (school zone DB). 38) and a recording head (not shown) which is a driver for reading predetermined programs and the like and writing predetermined data to the hard disk. In this embodiment, a hard disk is used as the external storage device and storage medium of the data recording unit 22, but in addition to the hard disk, a magnetic disk such as a flexible disk can be used as the external storage device. Also, a memory card, magnetic tape, magnetic drum, CD, MD, DVD, optical disk, MO, IC card, optical card, etc. can be used as an external storage device.

  Here, the navigation side map information DB 37 stores navigation map information 37 </ b> A that is used for travel guidance and route search of the navigation device 2 and that is updated by the information distribution center 3. Here, the navigation map information 37A is composed of various information necessary for route guidance and map display in the same way as the update map information 14A. For example, new road information and a map for identifying each new road are displayed. Map display data for display, intersection data for each intersection, node data for node points, link data for roads (links) as a kind of facility, search data for searching for routes, kindergartens and kinders as a kind of facility It consists of facility data related to POIs such as various schools such as junior high schools and stores, search data for searching points, and the like. Since details of each data have already been described, details thereof are omitted here. The contents of the navigation-side map information DB 37 are updated by downloading update information distributed from the information distribution center 3 via the communication device 27.

  The school zone DB 38 stores area information representing school zone areas centered on each school to be updated by the information distribution center 3. Further, the school zone DB 38 has a plurality of risk levels (high risk level 0 in this embodiment) that indicate the high probability that pedestrians such as elementary school students and junior high school students who are to be updated by the information distribution center 3 are passing. (4 levels of risk level 3) are set for each link in each school zone, and risk level information indicating the risk level set for each link is stored.

  As shown in FIG. 2, the navigation control unit 23 constituting the navigation device 2 is a computing device that performs overall control of the navigation device 2, a CPU 41 as a control device, and working when the CPU 41 performs various types of computation processing. In addition to being used as a memory, the RAM 42 that stores route data when a route is searched, traffic information received from the information distribution center 3 and the like, a control program, a travel guidance processing program in a school zone described later ROM 43 in which (see FIG. 11) is stored, an internal storage device such as a flash memory 44 for storing a program read from the ROM 43, a timer 45 for measuring time, and the like. As the RAM 42, ROM 43, flash memory 44, etc., a semiconductor memory, a magnetic core or the like is used. As the arithmetic device and the control device, an MPU or the like can be used instead of the CPU 41.

  In this embodiment, various programs are stored in the ROM 43, and various data are stored in the data recording unit 22. However, the programs, data, and the like are stored in the same external storage device, memory card. It is also possible to read out a program, data, etc. from the flash memory 44 and so on. Further, the program, data, etc. can be updated by exchanging a memory card or the like.

Furthermore, the navigation control unit 23 is electrically connected to peripheral devices (actuators) of the operation unit 24, the liquid crystal display 25, the speaker 26, and the communication device 27.
This operation unit 24 is operated when correcting the current location at the start of traveling, inputting a departure point as a guidance start point and a destination as a guidance end point, or searching for information about facilities, etc. Consists of keys and multiple operation switches. Note that the operation unit 24 may be configured by a keyboard, a mouse, or the like, or a touch panel provided on the front surface of the liquid crystal display 25.
In addition to a route guidance screen on which a map based on the navigation map information 37A is displayed and traffic information on each link is displayed on the liquid crystal display 25, operation guidance, operation menu, key guidance, from the current location to the destination Guidance route, guidance information along the guidance route, traffic information, and the like are displayed.

In addition, the speaker 26 outputs voice guidance or the like that guides traveling along the guidance route based on an instruction from the navigation control unit 23. Here, examples of the voice guidance to be guided include “200m ahead, turn right at XX intersection”, “passing the school zone”, and the like.
The communication device 27 is a communication means such as a mobile phone network that communicates with the information distribution center 3, and transmits / receives the latest version of updated map information and area information regarding the school zone to the information distribution center 3. Do. Further, in addition to the information distribution center 3, the communication device 27 receives traffic information composed of information such as traffic jam information transmitted from the road traffic information center (VICS) and the congestion status of the service area.

Next, in the navigation system 1 having the above-described configuration, a school zone change setting process for changing and setting area information representing a school zone area executed by the CPU 11 of the information distribution center 3 and distributing it to the navigation device 2 will be described with reference to FIGS. This will be described with reference to FIG.
FIG. 3 is a main flowchart showing a school zone change setting process in which the area information and the like related to the school zone is changed and distributed to the navigation device 2 and executed by the CPU 11 of the information distribution center 3. FIG. 4 is a sub-flowchart showing a sub-process of the “school zone area increase / decrease setting process” of FIG. FIG. 7 is a sub-flowchart showing a sub-process of the “school zone risk setting process” of FIG. FIG. 10 is a sub-flowchart showing a sub-process of the “distribution process” of FIG.

  As shown in FIG. 3, first, in step (hereinafter abbreviated as “S”) 11, the CPU 11 executes a sub-process of “school zone area increase / decrease setting process” for expanding or decreasing the school zone area. In S12, the CPU 11 has a large number of pedestrians such as elementary school students and junior high school students who pass through each link in each school zone, that is, there are pedestrians such as elementary school students and junior high school students. A sub-process of “school zone risk setting process” for setting a plurality of risk levels (in this embodiment, four levels of risk level 0 to risk level 3) representing the high possibility is executed. To do. Subsequently, in S <b> 13, the CPU 11 ends the process after executing the “distribution process” sub-process for distributing the area information representing the school zone area to the navigation device 2.

Next, the sub-process of the “school zone area increase / decrease setting process” executed by the CPU 11 in S11 will be described with reference to FIGS.
As shown in FIG. 4, in S <b> 111, the CPU 11 sets a predetermined school zone as a processing target based on the area information of school zones nationwide stored in the center-side school zone DB 16. Then, the CPU 11 sequentially extracts all the links in the school zone and around the school zone (for example, a range of about 1 km to 3 km from the school zone) from the update map information 14 </ b> A and stores them in the RAM 12.
Subsequently, in S112, based on the area information of the school zone stored in the center-side school zone DB 16, the CPU 11 determines whether or not this link is the link in the school zone for the first extracted link. Execute the judgment process.
If the first extracted link is a link in the school zone (S112: YES), the CPU 11 proceeds to the process of S113.
In S113, the CPU 11 executes a determination process for determining whether a student (pedestrian) such as an elementary school student or a junior high school student is passing the first extracted link. That is, the CPU 11 goes to school hours (for example, from 7:00 am to 8:30 am or from 3:30 pm to afternoon) of students (pedestrians) such as elementary school students and junior high school students corresponding to the link extracted first. 5:00:00), the number of pedestrians is read from the center-side school zone DB 16 and a determination process for determining whether the number of pedestrians is one or more is executed.

  Note that the CPU 11 periodically (for example, every 24 hours, one week) pedestrian position information and time information on each link through which pedestrians such as elementary school students and junior high school students pass from the GPS server 5 via the network 4. Every month, every month, etc.) are acquired and stored in the center school zone DB 16. The CPU 11 then stores each school stored in the center-side school zone DB 16 from the latest location information and time information of the pedestrian on each link through which pedestrians such as elementary school students and junior high school students obtained from the GPS server 5 pass. Calculate the number of pedestrians who go through each zone within the zone and around the school zone at a predetermined time (for example, every 30 minutes of school hours), and link to each link. Store in the zone DB 16.

  For example, the CPU 11 has 7:07:00 to 7:30 AM, 7:30 AM to 8:30 AM, 8: 0AM to 8:30 AM, 3:30 PM to 4 PM. For each link, calculate the number of pedestrians such as elementary and junior high school students who pass through each time zone, such as 0 minutes, 4:30 pm to 4:30 pm, 4:30 pm to 5: 0 pm , And stored in the center side school zone DB 16 in association with each link. Therefore, the number of pedestrians who pass through each link in and around each school zone stored in the center-side school zone DB 16 at regular intervals is periodically (for example, every 24 hours, one week) Every month, every month, etc.) Updated.

And, when a student (pedestrian) such as an elementary school student or a junior high school student is passing the link extracted first, that is, a commuting time of a student (pedestrian) such as an elementary school student or a junior high student corresponding to the first extracted link When the number of pedestrians in the belt is one or more (S113: YES), the CPU 11 proceeds to the process of S119.
In S119, the CPU 11 executes a determination process for determining whether there is a next link extracted in S111. If there is no next link extracted in S111 (S119: NO), the CPU 11 determines that the processing of the school zone has ended, determines whether there is a next predetermined school zone, If there is a next predetermined school zone, the next predetermined school zone is set as a processing target, and the processing after S111 is executed again. On the other hand, if there is no next predetermined school zone, the CPU 11 determines that the sub-process has been executed for all school zones, ends the loop, returns to the main flowchart, and proceeds to the process of S12.
On the other hand, when there is a next link extracted in S111 (S119: YES), the CPU 11 executes a loop after S112 for the next link.

In addition, when a student (pedestrian) such as an elementary school student or a junior high school student does not pass the link extracted first in S113, that is, a student (pedestrian) such as an elementary school student or a junior high school student corresponding to the first extracted link. When the number of pedestrians in the school time zone is zero (S113: NO), the CPU 11 proceeds to the process of S114.
In S <b> 114, the CPU 11 has a non-passing day in which a student (pedestrian) such as an elementary school student or a junior high school student does not pass through the first extracted link is a predetermined number of days or more (for example, 7 days or more, 10 days or more, etc.). )) Is executed to determine whether or not. Specifically, the CPU 11 refers to the update history of the number of pedestrians of the first link stored in the center-side school zone DB 16 and is more than a predetermined number of days (for example, 7 days or more, 10 days or more, etc.). Yes, it is determined whether the number of pedestrians is zero.

If the number of non-passing days in which a student (pedestrian) such as an elementary school student or a junior high school student does not pass the link extracted first is less than the predetermined number of days (S114: NO), the CPU 11 proceeds to the process of S119. Then, the process of S119 is executed.
On the other hand, if the number of days of non-passage where students (pedestrians) such as elementary school students and junior high school students do not pass the link extracted first is greater than or equal to the predetermined number of days (S114: YES), the CPU 11 proceeds to the process of S115. To do.

  In S115, the CPU 11 determines that the first extracted link is a link through which a student (pedestrian) such as an elementary school student or a junior high school student does not pass, and a predetermined area including the first extracted link (for example, a link) Is set as a non-passing area and stored in the RAM 12. Then, the CPU 11 reads the school zone including the first extracted link from the center side school zone DB 16, deletes the non-passing area portion from the read school zone, and stores it again in the center side school zone DB 16. Thereafter, the process proceeds to S119, and the process of S119 is executed. Thereby, the part of the non-passing area where students (pedestrians) such as elementary school students and junior high school students in the school zone do not pass is deleted from the school zone, and the school zone is updated.

If the first link extracted in S112 is not a link in the school zone, that is, if the link exists around the school zone (S112: NO), the CPU 11 proceeds to the process of S116.
In S <b> 116, the CPU 11 executes a determination process for determining whether a student (pedestrian) such as an elementary school student or a junior high school student is passing the first extracted link. That is, the CPU 11 goes to school hours (for example, from 7:00 am to 8:30 am or from 3:30 pm to afternoon) of students (pedestrians) such as elementary school students and junior high school students corresponding to the link extracted first. 5:00:00), the number of pedestrians is read from the center-side school zone DB 16 and a determination process for determining whether the number of pedestrians is one or more is executed.

And, when the first extracted link is not passed by students (pedestrians) such as elementary school students and junior high school students, that is, the commuting time of elementary school students and junior high school students (pedestrians) corresponding to the first extracted link When the number of pedestrians in the belt is zero (S116: NO), the CPU 11 proceeds to the process of S119 and executes the process of S119.
On the other hand, when a student (pedestrian) such as an elementary school student or a junior high school student is passing the link extracted first, that is, an attendance time of a student (pedestrian) such as an elementary school student or a junior high student corresponding to the first extracted link When the number of pedestrians in the belt is one or more (S116: YES), the CPU 11 proceeds to the process of S117.

In S117, the CPU 11 stores the first extracted link in the RAM 12 as a school link (passage link) through which students (pedestrians) such as elementary school students and junior high school students pass.
In S118, the CPU 11 sets a predetermined area including the school link (for example, a range of about 50 m to 100 m on both sides along the link) as a school area (additional area), and sets this area in the school zone. After adding the school area (additional area) and storing it again in the center-side school zone DB 16, the process proceeds to S119, and the process in S119 is executed. As a result, the part of the school area (additional area) that includes a school link from which students (pedestrians) such as elementary school students and junior high school students who go to school zone from around the school zone pass is added to this school zone. School zone is updated.

Here, FIG. 5 shows an example in which a school area (additional area) including a school link where a student (pedestrian) such as an elementary school student or a junior high school student who goes to the school zone from the periphery of the school zone passes is added to this school zone. And it demonstrates based on FIG.
FIG. 5 is a diagram showing an example of a school route for students entering from outside the school zone. FIG. 6 is a diagram showing an example of adding an additional area to the school zone.
As shown in FIG. 5, a predetermined area centering on the middle school 52 among the elementary school 51 and the middle school 52 is initially set as a school zone 53 and stored in the center-side school zone DB 16. In addition, a junior high school student (pedestrian) who has a home 55 around the school zone about 1 km outside the school zone 53 goes to the junior high school 52 by carrying the mobile phone 6 with GPS function, and the school route where the junior high school student goes to school 56 position information and time information are sequentially stored in the GPS server 5. As a result, the CPU 11 of the information distribution center 3 acquires the position information and time information of the junior high school students (pedestrians) on each link on the school route 56 from the GPS server 5 via the network 4, and the center side school zone. Store in DB16.

  Then, as shown in FIG. 6, when there is no link on the school route that this junior high school student goes to in the school zone 53 (S112: NO), the CPU 11 takes both sides along each link outside the school zone. A range of about 50 to 100 m is set as a school area (additional area) 58. And CPU11 memorize | stores the new school zone 60 which added this attending school area (additional area) 58 to the school zone 53 in the center side school zone DB16 as a school zone centering on the junior high school 52 (S117-S118).

Next, sub-processing of “school zone risk setting processing” executed by the CPU 11 in S12 will be described with reference to FIGS.
As shown in FIG. 7, in S211, the CPU 11 determines, based on the area information of each school zone nationwide stored in the center side school zone DB 16, from the update map information 14A within the school zone around the school zone and around the school zone ( For example, all links in the range of about 1 km to 3 km from the school zone are sequentially extracted and stored in the RAM 12.
Subsequently, in S212, the CPU 11 determines whether or not this link is the link in the school zone for the first extracted link based on the area information of the school zones nationwide stored in the center-side school zone DB 16. The determination process to be executed is executed.

If the first link extracted in S212 is not a link in the school zone, that is, if the link exists around the school zone (S212: NO), the CPU 11 proceeds to the process in S213.
In S213, the CPU 11 sets “risk level 0” representing the lowest level that requires the attention of pedestrians such as elementary school students and junior high school students in the first extracted link, and stores it in the center-side school zone DB 16 , The process proceeds to S221.
In S221, the CPU 11 executes a determination process for determining whether there is a next link extracted in S211. If there is no next link extracted in S211 (S221: NO), the CPU 11 determines that the sub-process has been executed for all school zones, ends the loop, returns to the main flowchart, and returns to S13. Transition to processing.
On the other hand, when there is a next link extracted in S211 (S221: YES), the CPU 11 executes a loop after S212 for the next link.

If the first link extracted in S212 is a link in the school zone (S212: YES), the CPU 11 proceeds to S214.
In S214, the link extracted at the first time in each time zone for every predetermined time (for example, 7: 0 am to 7:30 am, 7:30 am to 8:00:00 am, 8:00 am to 8:30 am, 3:30 pm to 4:30 pm, 4 pm to 4:30 pm, 4:30 pm to 5:30 pm, etc. .) The number of pedestrians such as elementary school students and junior high school students passing through the link is read from the center school zone DB 16 and stored in the RAM 12.
In S215, the CPU 11 determines that the number of pedestrians passing through the first extracted link in the first predetermined time zone (for example, 7:00:00 to 7:30 am) is A. A determination process for determining whether or not the number is more than 10 (for example, 10 or more) is executed. If the number of pedestrians passing through the first extracted link is A or more (S215: YES), the CPU 11 proceeds to the process of S216. In S216, the CPU 11 makes a pedestrian such as an elementary school student or a junior high school student in the first predetermined time zone (for example, 7:07:00 to 7:30 am) for the first extracted link. After setting the “risk level 3” representing the highest level that needs to be passed and storing it in the center-side school zone DB 16, the process proceeds to S220.

In S220, the CPU 11 executes determination processing for determining whether or not the number of pedestrians such as elementary school students and junior high school students who pass the link in the next predetermined time period read from the center-side school zone DB 16 in S214 is stored in the RAM 12. To do. If the number of pedestrians such as elementary school students and junior high school students who pass the link in the next predetermined time zone is not stored in the RAM 12 (S220: NO), the CPU 11 ends the loop and proceeds to the processing of S221. Then, the process of S221 is executed.
On the other hand, when the number of pedestrians such as elementary school students and junior high school students who pass the link in the next predetermined time zone is stored in the RAM 12 (S220: YES), the CPU 11 passes the link in the next predetermined time zone. The loop after S215 is executed for the number of pedestrians such as elementary school students and junior high school students.

Further, when the number of pedestrians passing through the link extracted first in S215 is less than A (S215: NO), the CPU 11 proceeds to the process of S217. In S217, the CPU 11 determines that the number of pedestrians passing through the first extracted link in the first predetermined time zone (for example, from 7:00:00 to 7:30 AM) is B or more ( For example, determination processing for determining whether or not there are five or more people is executed.
If the number of pedestrians passing through the first extracted link is B or more (S217: YES), the CPU 11 proceeds to the process of S218. In S218, the CPU 11 makes a pedestrian such as an elementary school student or a junior high school student in the first predetermined time zone (for example, 7:07:00 to 7:30 am) for the first extracted link. After setting the “risk level 2” representing a level lower than the “risk level 3” that needs to be taken care of and storing it in the center-side school zone DB 16, the process proceeds to S220, and the process of S220 is performed. Execute.

  On the other hand, when the number of pedestrians passing through the first extracted link is less than B (for example, 4 or less) (S217: NO), the CPU 11 proceeds to the process of S219. In S219, the CPU 11 makes a pedestrian such as an elementary school student or a junior high school student in the first predetermined time zone (for example, 7:07:00 to 7:30 am) for the first extracted link. Is set to “risk level 1” indicating a level lower than “risk level 2” that requires the attention of traffic, and is stored in the center-side school zone DB 16, the process proceeds to S 220, and the process of S 220 is performed. Execute.

Here, an example of setting the risk level for each link on the school route 56 in the school zone 60 whose setting has been changed in FIG. 6 will be described with reference to FIGS. 8 and 9.
FIG. 8 is a diagram showing an example of each passing area where a junior high school student who goes from home 55 to the junior high school 52 passes the school route 56 in the school zone 60 every predetermined time. FIG. 9 is a diagram illustrating an example of setting the risk level based on the number of pedestrians for each predetermined time in each traffic area of FIG.
As shown in FIG. 8, the CPU 11 detects the position information that the junior high school student who goes to the junior high school 52 from the home 55 passes through the school route 56 in the school zone 60 between 7:00 am and 8:30 am The time information is read from the center side school zone DB 16 and stored in the RAM 12. Then, the CPU 11 classifies each link of the school road 56 through which the junior high school student passes into a link that passes every about 30 minutes, and includes a predetermined link including each link that passes between 7:00 am and 7:30 am. An area (for example, a range of about 50 m on both sides along the link) is stored in the RAM 12 as the first traffic area 62. Further, the CPU 11 sets a predetermined area including each link passing between 7:30 am and 8:00:00 am (for example, a range of about 50 m on both sides along the link) as the second traffic area 63. Store in the RAM 12. In addition, the CPU 11 sets a predetermined area including each link passing between 8:00:00 am and 8:30 am (for example, a range of about 50 m on both sides along the link) as the third traffic area 64. Store in the RAM 12.

  Then, as shown in FIG. 9, the CPU 11 determines the number of pedestrians passing on each link in the first traffic area 62 from the center side school zone DB 16 between 7:00 am and 7:30 am. Since the only pedestrians who read and go to this time zone are junior high school students who go to school from their home 55, the elementary school students of each link in the first traffic area 62 in the time zone from 7:00 am to 7:30 am Further, a level that requires pedestrians such as pedestrians and junior high school students is set to “risk level 1” and stored in the center side school zone DB 16 (S215: NO to S217: NO to S219). In addition, the CPU 11 reads the number of pedestrians passing on each link in the second traffic area 63 from the center side school zone DB 16 between 7:30 am and 8:00:00 am, and travels during this time zone. Because the number of pedestrians who have passed through other links will join 5 to 9 junior high school students, it will be in the second traffic area 63 in the time zone from 7:30 am to 8:00:00 am The level that requires the attention of pedestrians such as elementary and junior high school students of each link is set to “risk level 2” and stored in the center school zone DB 16 (S215: NO to S217: YES to S218). Further, the CPU 11 reads the number of pedestrians passing on each link in the third traffic area 64 from the center side school zone DB 16 between 8:00:00 am and 8:30 am, and passes during this time zone. Since the number of pedestrians who have passed through other links will be 10 or more, the number of pedestrians in the third traffic area 64 in the time zone from 8: 0AM to 8:30 AM The level requiring the attention of pedestrians such as link elementary school students and junior high school students is set to the highest “risk level 3” and stored in the center school zone DB 16 (S215: YES to S216).

Next, sub processing of “distribution processing” executed by the CPU 11 in S13 will be described with reference to FIG.
FIG. 10 is a sub-flowchart showing a sub-process of the “distribution process” of FIG.
As shown in FIG. 10, in S311, the CPU 11 receives each vehicle information such as the navigation identification ID, the coordinate data of the vehicle position, the version information of the navigation map information 37A together with the request command transmitted from the navigation device 2. The vehicle information is stored in the RAM 12. Then, the CPU 11 executes a determination process for determining whether or not the received request command is a request command for requesting school zone information regarding the school zone.

If the request command received from the navigation device 2 is not a request command for requesting school zone information related to the school zone (S311: NO), the CPU 11 ends the sub-process and returns to the main flowchart.
On the other hand, when the request command received from the navigation device 2 is a request command for requesting school zone information related to the school zone (S311: YES), the CPU 11 proceeds to the process of S312. In S312, the CPU 11 reads the coordinate data (for example, latitude and longitude) of the own vehicle position received from the RAM 12, and the vicinity of the own vehicle position (for example, within a radius of about 20 km from the own vehicle position). Area information representing the area of each school zone is read from the center side school zone DB 16 and stored in the RAM 12. Further, the CPU 11 reads out risk level information representing each risk level 0 to 3 set in each school zone around the vehicle position and in each link around the school zone from the center side school zone DB 16 and stores it in the RAM 12. Remember.

Subsequently, in S313, the CPU 11 stores the area information indicating the area of each school zone stored in the RAM 12 in S312 and each risk level 0 to 3 set for each link in and around each school zone. Is distributed to the navigation device 2 identified by the navigation identification ID stored in S311 as school zone information, and then the sub-process is terminated and the process returns to the main flowchart.
The CPU 41 of the navigation device 2 specified by this navigation identification ID sets the area information representing the area of each school zone received via the communication device 27 and the links in and around each school zone. The risk level information representing the respective risk levels 0 to 3 is stored in the school zone DB 38. As a result, the area information indicating the area of each school zone already stored in the school zone DB 38 and the risk levels 0 to 3 set for the links in and around each school zone. Degree level information is updated.

Next, in the navigation system 1 having the above-described configuration, travel guidance processing in and around the school zone, which is executed by the CPU 41 of the navigation device 2, will be described with reference to FIG.
FIG. 11 is a flowchart showing travel guidance processing in and around the school zone, which is executed by the CPU 41 of the navigation device 2.
11 is stored in the ROM 43 of the navigation device 2, and is executed by the CPU 41 at predetermined time intervals (for example, every about 10 milliseconds to about 3 seconds).

As shown in FIG. 11, in S411, the CPU 41 detects the current position of the own vehicle (hereinafter referred to as “own vehicle position”) and the direction of the own vehicle by the current position detection processing unit 21, Coordinate data (for example, latitude and longitude data) representing the vehicle position and the vehicle direction are stored in the RAM 42. Further, the CPU 41 detects the vehicle speed via the vehicle speed sensor 28 and stores it in the RAM 42.
Subsequently, in S412, the CPU 41 determines whether the vehicle position is located on a link in the school zone based on the area information indicating the area of each school zone stored in the school zone DB 38 and the navigation map information 37A. A determination process for determining whether or not is executed.

And when it determines with the own vehicle position not being located on the link in a school zone or a school zone periphery (S412: NO), CPU41 complete | finishes the said process.
On the other hand, if it is determined that the vehicle position is located on the link in or around the school zone (S412: YES), the CPU 41 proceeds to the process of S413. In S413, the CPU 41 reads out the current time from the timer 45, and attends school hours or goes to elementary school or junior high school (for example, from 7:00 am to 8:30 am or from 3:30 pm to 5 pm A determination process for determining whether or not the time is 0 minute is executed. If it is determined that the time read from the timer 45 is not in the school time zone (S413: NO), the CPU 41 ends the process.

On the other hand, when it is determined that the time read from the timer 45 is the school time zone (S413: YES), the CPU 41 proceeds to the process of S414. In S414, the CPU 41 executes a determination process for determining whether or not the risk level information set for the link where the vehicle is located is “risk level 1”.
If the risk level information set for the link where the vehicle is located is “risk level 1” (S414: YES), the CPU 41 proceeds to the process of S415. In S <b> 415, the CPU 41 sets a warning level for prompting the driver to pass pedestrians such as elementary school students and junior high school students in the school zone to “warning level 1” and stores the warning level in the RAM 42. Then, the CPU 41 reads out a warning processing program corresponding to the “warning level 1” from the school zone DB 38, and after executing the program, ends the processing.

For example, when the warning level for prompting the driver to pass the attention of pedestrians such as elementary school students and junior high school students in the school zone is “warning level 1”, the CPU 41 is displayed on the map displayed on the liquid crystal display 25. A school zone mark indicating that it is located in the school zone is displayed, and a warning for lightly alerting “passing the school zone” or the like is issued via the speaker 26 as a voice.
In the school zone DB 38, the warning levels for warning the driver of pedestrians such as elementary school students and junior high school students in the school zone are “warning level 1”, “warning level 2”, and “warning level 3”. A warning processing program corresponding to each is stored in advance.

On the other hand, when the risk level information set for the link where the vehicle is located is not “risk level 1” (S414: NO), the CPU 41 proceeds to the process of S416. In S416, the CPU 41 executes a determination process for determining whether or not the risk level information set for the link where the vehicle is located is “risk level 2”.
When the risk level information set for the link where the vehicle is located is “risk level 2” (S416: YES), the CPU 41 proceeds to the process of S417. In S417, the CPU 41 sets the warning level for prompting the driver to pass pedestrians such as elementary school students and junior high school students in the school zone to “warning level 2” that is higher than “warning level 1”. Store in the RAM 42. Then, the CPU 41 reads out the warning processing program corresponding to this “warning level 2” from the school zone DB 38, and after executing it, ends the processing.

  For example, when the warning level for prompting the driver to pass pedestrians such as elementary school students and junior high school students in the school zone is “warning level 2”, the CPU 41 is displayed on the map displayed on the liquid crystal display 25. In addition to displaying a large school zone mark indicating that it is located in the school zone, a warning sound of “beep” is issued through the speaker 26, and a warning such as “There is a risk of a child jumping out” is urged. Announce the warning with a loud voice.

  On the other hand, when the risk level information set for the link where the vehicle is located is not “risk level 2” (S416: NO), the CPU 41 proceeds to the process of S418. In S <b> 418, the CPU 41 sets the warning level for urging the driver to pay attention to pedestrians such as elementary school students and junior high school students in the school zone to the highest level “warning level 3”, and stores it in the RAM 42. Then, the CPU 41 reads out a warning processing program corresponding to the “warning level 3” from the school zone DB 38, and after executing the program, ends the processing.

For example, when the warning level that prompts the driver to pass pedestrians such as elementary school students and junior high school students in the school zone is “warning level 3”, the CPU 41 displays the warning on the map displayed on the liquid crystal display 25. The school zone mark indicating that it is located in the school zone is displayed in a large size and blinks. In addition, a loud warning sound “high-pitched” and a warning that calls attention to “children” and the like are issued through a loudspeaker 26 in a loud voice that is easy to recognize.
Further, every time the vehicle position reaches the intersection, the vehicle speed is detected via the vehicle speed sensor 28. If the vehicle speed exceeds a predetermined speed limit (for example, about 20 km / h or more), “forced for safety” May be output via the speaker 26 and the vehicle speed may be reduced to approximately 10 km / h or less via a vehicle ECU (Electronic Control Unit) (not shown).

As described above in detail, in the navigation system 1 according to the present embodiment, the CPU 11 of the information distribution center 3 allows the pedestrians on each link that pedestrians such as elementary school students and junior high school students pass from the GPS server 5 via the network 4. The position information and the time information are periodically acquired (for example, every 24 hours, every week, every month, etc.) and stored in the center-side school zone DB 16. Then, the CPU 11 goes to school hours (for example, from 7:00 am to 8:30 am or 3:30 pm) of students (pedestrians) such as elementary school students and junior high school students corresponding to each link in each school zone throughout the country. The number of pedestrians in the center side school zone DB 16 is read out from the center side school zone DB 16, and the number of non-passing days in which students (pedestrians) such as elementary school students and junior high school students are not passing is a predetermined number of days or more (for example, More than a day, more than 10 days, etc.) A certain link is extracted. Then, a predetermined area including each extracted link (for example, a range of about 50 m on both sides along the link) is set as a non-passing area, and the non-passing area part is deleted from each school zone, Again, it is stored in the center-side school zone DB 16 (S113: NO to S114: YES to S115).
As a result, the CPU 11 controls the non-passing area where students such as elementary school students and junior high school students (pedestrians) do not pass in accordance with the actual traffic conditions of elementary school students and junior high school students (pedestrians) in each school zone. It can be deleted and changed from each school zone stored in the school zone DB 16.

Further, the CPU 11 is a school time zone (for example, elementary school students, junior high school students, etc.) corresponding to each link around each school zone in the country (for example, a range of about 1 km to 3 km from the school zone) (for example, From 7:00 am to 8:30 am and from 3:30 pm to 5: 0 pm), the center side school zone DB 16 reads out the number of pedestrians and students such as elementary and junior high school students (pedestrians) ) To go to school links (traffic links). Then, the CPU 11 sets a predetermined area including this school link (for example, a range of about 50 m to 100 m on both sides along the link) as a school area (additional area), adds it to each school zone, Again, it is stored in the center-side school zone DB 16 (S116: YES to S118).
As a result, a school area where students (pedestrians) such as elementary school students and junior high school students pass according to the actual traffic conditions of students (pedestrians) such as elementary school students and junior high school students who enter the school zone from outside the school zone. (Additional area), it is possible to add to each school zone stored in the center side school zone DB 16 and change the setting.

  Further, the CPU 11 indicates “the risk level 0 indicating the lowest level that requires the attention of pedestrians such as elementary school students and junior high school students for each link around each school zone nationwide stored in the center school zone DB 16. Is set and stored in the center school zone DB 16 (S213). In addition, the CPU 11 has, for each link in each school zone nationwide stored in the center side school zone DB 16, in each time zone for each predetermined time of each link (for example, from 7:00 am 7:30 am, 7:30 am to 8: 0 am, 8: 0 am to 8:30 am, 3:30 pm to 4:30 pm, 4 pm to 4 pm 30:30, 4:30 pm to 5:00 pm, etc.) The number of pedestrians such as elementary school students and junior high school students passing through each link is read from the center-side school zone DB 16. Then, for each link in each school zone, the CPU 11 requires the most attention when the number of pedestrians of the link is A or more (for example, 10 or more). “Danger level 3” is stored in the center-side school zone DB 16 as the risk level information of the link in this time zone (S216). In addition, when the number of pedestrians on the link is B or more (for example, 5 or more), the CPU 11 is less “risk level 2” than “risk level 3”. Is stored in the center-side school zone DB 16 as the risk level information of the link in this time zone (S218). Further, when the number of pedestrians on the link is less than B (for example, 4 or less), the CPU 11 is less at risk level 1 than “risk level 2”. Is stored in the center-side school zone DB 16 as the risk level information of the link in this time zone (S219).

Thus, for each link in each school zone nationwide stored in the center-side school zone DB 16 in each time zone at a predetermined time (for example, from 7:00 am to 7:30 am in the school time zone) , 7:30 am-8am, 8am-8:30 am, 3:30 pm-4pm, 4pm-4:30 pm, afternoon From 4:30 to 5:00 pm, etc.) It becomes possible to change the level of alert guidance in the school zone corresponding to each risk level 1 to 3 set for each link, Every predetermined time (for example, from 7:00 am to 7:30 am, 7:30 am to 8:30 am, 8: 0 am to 8:30 am, 3:00 pm during school hours) 30 minutes-4pm, 4pm-4:30 pm, 4:30 pm-5pm In a.) It is possible to carry out the guidance of a reliable reminder.
Further, each link in each school zone is set with each of the risk levels 1 to 3 that are more sensitive to pedestrians than the risk level 0 set for each link around each school zone. Therefore, it is possible to change the level of alerting guidance within the school zone and the vicinity of the school zone, and it is possible to provide highly reliable alerting guidance.

Further, when the CPU 11 receives a request command for requesting school zone information related to the school zone, coordinate data of the vehicle position, navigation identification ID, and the like from the navigation device 2, the CPU 11 has a position around the vehicle position (for example, the vehicle position). Area information representing each school zone area and risk level information representing each risk level 0 to 3 set for each link in and around this school zone. Are distributed from the center school zone DB 16 and distributed to the navigation device 2 specified by the navigation identification ID (S311: YES to S313).
Thereby, the CPU 41 of the navigation device 2 changes the area information of the school zone that is changed according to the traffic state of the pedestrian in and around the school zone, and the risk levels 0 to 0 set for each link. 3 can be received, and a driver can be notified of a more accurate school zone.

  Further, the CPU 11 uses the GPS server 5, based on position information and time information collected from the mobile phone 6 with GPS 6B function carried by each pedestrian such as elementary school and junior high school students. It is possible to collect location information at each predetermined time on each link that pedestrians pass, and it is possible to accurately change and set the school zone area based on the exact movement route of each pedestrian such as elementary school students and junior high school students It becomes possible. Further, the CPU 11 uses the GPS server 5 to link each link in the school zone based on the position information and time information collected from the mobile phone 6 with GPS 6B function carried by each pedestrian such as an elementary school student and a junior high school student. The number of pedestrians such as elementary school students and junior high school students who pass through is calculated periodically (for example, every 24 hours, every week, every month, etc.), and the risk levels 1 to 3 for the respective links are calculated. It becomes possible to change and set accurately, and it is possible to provide a more reliable guidance for alerting.

In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention.
For example, the CPU 11 of the information distribution center 3 performs “school zone change setting processing” (S11) and “school zone risk setting processing” (S12) shown in FIG. The pedestrian's location information and time information on each link through which pedestrians such as junior high school students pass are periodically acquired (for example, every 24 hours, every week, every month, etc.), and the center side It may be executed when it is stored in the school zone DB 16, and the “distribution process” (S13) may be executed every predetermined time (for example, every about 1 msec to 10 msec).

It is the block diagram which showed the navigation system which concerns on a present Example. It is the block diagram which showed the navigation apparatus of the navigation system. It is a main flowchart which shows the school zone change setting process which CPU of an information delivery center performs. 4 is a sub-flowchart showing a sub-process of “school zone area increase / decrease setting process” in FIG. 3. It is a figure which shows an example of a school route of the student who enters from the outside of a school zone. It is a figure which shows an example which adds an additional area to a school zone. 4 is a sub-flowchart showing a sub-process of “school zone risk setting process” in FIG. 3. It is a figure which shows an example of each passing area where the junior high school student who goes to the junior high school from home passes the school route in a school zone for every predetermined time. It is a figure which shows an example which sets a danger level based on the number of pedestrians for every predetermined time of each traffic area of FIG. 4 is a sub-flowchart showing a sub-process of “distribution process” in FIG. 3. It is a flowchart which shows the driving guidance process in the school zone and the periphery of a school zone which CPU of a navigation apparatus performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation system 2 Navigation apparatus 3 Information distribution center 4 Network 5 GPS server 6 Mobile phone 6A, 27 Communication apparatus 6B, 31 GPS
10 server 11, 41 CPU
12, 42 RAM
13, 43 ROM
16 Center side school zone DB
17 Center side communication device 51 Elementary school 52 Junior high school 53, 60 School zone 56 School road 58 Additional area 62 First traffic area 63 Second traffic area 94 Third traffic area

Claims (8)

School zone storage means for storing a predetermined area centered on the school as a school zone;
Movement information collecting means for collecting movement information of pedestrians around the school zone;
Additional area setting means for setting an additional area to be added to the school zone based on the movement information;
School zone addition control means for controlling to add the additional area to the school zone;
An information creating apparatus characterized by comprising: School zone storage means for storing a predetermined area centered on the school as a school zone;
Movement information collecting means for collecting movement information of pedestrians passing through the school zone;
A non-passing area setting means for setting a non-passing area where the pedestrian does not pass for a predetermined number of days or more based on the movement information;
School zone deletion control means for controlling to delete the non-traffic area from the school zone;
An information creating apparatus characterized by comprising:   3. The distribution device according to claim 1, further comprising: a distribution unit that distributes area information representing an area of the school zone in the vicinity where the navigation device is located based on a request from the navigation device to the navigation device. The information creation device described. School zone storage means for storing a predetermined area centered on the school as a school zone;
Movement information collecting means for collecting movement information of pedestrians passing through the school zone;
A risk level setting means for setting a risk level for each link in the school zone based on the movement information;
An information creating apparatus characterized by comprising: Pedestrian number calculating means for calculating the number of pedestrians passing every predetermined time for each link in the school zone based on the movement information;
The risk level setting means sets the risk level for each link in the school zone based on the number of pedestrians passing every the predetermined time. 4. The information creation device according to 4.   6. The information creation apparatus according to claim 4, wherein the risk level setting unit sets a lowest risk level indicating the lowest level for each link around the school zone.   Distributing means for distributing, to the navigation device, risk level information representing the risk level set for each link in the surrounding school zone where the navigation device is located based on a request from the navigation device. The information creation apparatus according to claim 4, wherein the information creation apparatus is an information creation apparatus.   The said movement information collection means collects the said movement information based on the terminal position information collected from the terminal device with a GPS function which the said pedestrian carries, The one in any one of Claim 1 thru | or 7 characterized by the above-mentioned. The information creation device described.

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