JP2012202890A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a portable navigation device or a portable terminal having a navigation function to provide users walking at late hours with essential information on dangers around the users.SOLUTION: As shown in FIG. 1, the navigation device N according to the present invention includes a control section 1, an actual location detecting section 2, an input section 3, a ROM 4, a storage section 5, a RAM 6, a display section 7, a sound output section 8, a data communication section 9, and a bus line 10. Further, the navigation device automatically determines a time and selects a route searching mode corresponding to the time when performing route guidance to a destination, so that the device searches for a route that avoids dangerous areas, displays warnings about dangerous areas, and issues warnings by sound only at hours when crimes are very likely to happen.

Description

  The present invention relates to a navigation technology mounted on a portable terminal such as a portable navigation device and a mobile phone.

  In recent years, portable terminals having portable navigation and navigation functions have become widespread, and pedestrians can easily know a walking route to a destination, and convenience during walking has been improved.

  In portable terminals having such portable navigation and navigation functions, information on points where traffic jams and accidents frequently occur is maintained as a database, as with in-vehicle navigation devices, and there are routes to avoid using this information. It is configured so that it can be searched. For this reason, it has a function of searching for routes by avoiding roads where traffic is likely to be congested, places where accidents occur frequently, and the like, and is configured so that an optimal route according to the needs of the user can be obtained.

  On the other hand, there are many incidents where pedestrians (especially women and children) are involved in crimes at night, etc. For example, information on points where crimes such as suspicious persons, molesters, and kidnappings frequently occur Is disclosed as a dangerous area information database and used not only for traffic safety but also for crime prevention (see, for example, Patent Document 1). Japanese Patent Application Laid-Open No. H10-260260 discloses a technique for generating a warning display and a warning sound when approaching a dangerous area.

Japanese Patent No. 4375756

  However, when searching for a route that avoids danger using a dangerous region information database as in the past, a route that avoids the dangerous region is always searched regardless of time, and a warning is given if the user approaches the dangerous region. There was a problem that a display and a warning sound were emitted.

  Therefore, an object of the present invention is to provide a navigation device capable of notifying a portable terminal having a portable navigation or a navigation function when a user walks in a late time zone and passes around a danger area. To do.

The navigation device according to the present invention is a navigation device capable of guiding a route to a destination, and includes current position detection means for detecting a current position, detailed information relating to electronic map data and a danger area associated with the electronic map data. Storage means storing dangerous area data for storing the route, route search means for searching for a route from the current position to the destination, and the route searched by the route search means superimposed on the electronic map data Display means for displaying; route guidance means for guiding the route searched by the route search means; and determining whether or not the current time is in a certain time zone; Mode change means for changing the route search so as to avoid the dangerous area by means, and the current position detecting means for detecting the dangerous area data. Determining means for determining whether or not there is a dangerous area around the current position, and notifying a user when it is determined that the dangerous area is around the current position in the determination result of the determining means And an operation control means for controlling the operation.

  The map data of the navigation device of the present invention is characterized in that a crime occurrence information database is stored for each latitude and longitude and area.

  The search mode changing means of the navigation device of the present invention changes the search mode so that the route search means searches for a route that avoids a latitude, longitude, and area where the crime occurrence information stored in the map data is present. Features.

  According to the navigation device of the present invention, the search mode is first switched based on the time information acquired from the GPS satellite, and then, in addition to the position information acquired from the GPS satellite, the current location and its surroundings are detected from the map database and the crime occurrence information database. Danger area information is acquired, a route to be avoided is searched by the route searching means, and further, a display that can identify the dangerous area on the map and when it approaches the area, the user can be alerted by voice It is configured.

  The display means of the navigation device of the present invention is characterized in that when the search mode is changed by the mode changing means, the display is highlighted when there is crime occurrence information around the route.

  According to the navigation device of the present invention configured as described above, at night when a crime is likely to occur, for example, when searching for a route to a home, a route that automatically avoids a dangerous area is searched, and further on the map By notifying the danger area around the route by display or sound, the security awareness can be enhanced for the user and the risk of crime can be reduced.

  As described above, the navigation device of the present invention can be used for a portable terminal and automatically determines from the current time when a route is guided to a destination, and switches to a route search mode corresponding to the time. The route search avoiding the dangerous area, the warning display of the dangerous area, and the voice warning can be performed only in the time zone (midnight) when there are many.

The block diagram which shows the structure of the navigation apparatus regarding one Embodiment of this invention. The schematic diagram which shows the display screen of the navigation apparatus regarding one Embodiment of this invention. FIG. 1 is a control flow diagram of a navigation apparatus according to an embodiment of the present invention.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the navigation apparatus of the present invention.
As shown in FIG. 1, the navigation device N of the present invention includes a control unit 1, a current position detection unit 2, an input unit 3, a ROM 4, a storage unit 5, a RAM 6, a display unit 7, and a voice output unit. 8, a data communication unit 9, and a bus line 10.

Here, the control unit 1 includes a route search unit 1a, a route guide unit 1b, a mode change unit 1c, a determination unit 1d, and an operation control unit 1e.
The route search unit 1a is configured to be able to search for a route from the current position or an arbitrary point to the destination, and excludes the route and facility of the dangerous area data 5b based on the instruction of the mode change unit 1c. It is configured to search for a route.
The route guidance unit 1b is configured so that the route searched by the route search unit 1a can be routed to a destination using a guide sign, sound, voice, or the like.
When the mode change unit 1c determines whether the current time is midnight (for example, from 22:00 to dawn) by the determination unit 1d, when the route search unit 1a searches for the midnight, Are changed to a mode that does not select an area or route mounted in the dangerous area data 5b.
The determination unit 1d determines whether or not the current time is in the middle of the night (for example, from 22:00 to dawn) and determines whether or not there is a danger area between the current position and the set destination. It is configured to be able to. Further, when the determination unit 1d determines that the current time is midnight, the mode change unit 1c is instructed to change the mode so as to avoid the danger area when searching for a route from the current position to the destination. It is configured. Further, the route searched after the mode change unit 1c changes the search mode of the route search unit 1a can determine whether or not the dangerous area data 5b exists around the route. Yes. In addition, the determination unit 1d determines whether the user of the navigation device N has arrived at the destination by comparing the latitude / longitude detected by the current position detection unit 2 with the latitude route of the place where the destination is set. It is configured to be able to.
When the determination unit 1d determines that there is a dangerous area around the route, the operation control unit 1e notifies the display unit 7 or the voice output unit 8 that there is a dangerous area around the route. The display unit 7 is controlled to notify the user of the navigation device N.

  The current position detection unit 2 is configured to be able to detect current position information and time information. A map corresponding to the current position information acquired by the current position detection unit 2 is stored in the storage unit 5. The data 5 a can be read and displayed on the display unit 7. Further, the time information acquired together with the current position information is configured to be output to the mode change unit 1c.

  The input unit 3 is configured to be able to perform an operation input to the navigation device N, and is configured to be able to perform input operations such as destination setting and setting items.

  The ROM 4 is configured by storing a computer program that defines the operation of the navigation device N.

  The storage unit 5 includes map data 5a and dangerous area data 5b. Here, the dangerous area data 5b is configured by storing the latitude / longitude (position information) of a place where crimes frequently occur in the past, and point information such as the time, date, and weather when the crime occurred.

  The RAM 6 is configured to be able to store various types of information transferred from each component of the navigation device N and to delete information as necessary.

  The display unit 7 is configured to be able to display a map in the navigation device N and a recommended route searched by the route search unit 1a, and specifically, a liquid crystal display or the like. The display unit 7 is configured integrally with the input unit 3, and is configured as a touch panel display unit (3, 7) that can perform an input operation by selecting information or items displayed on the display unit 7. Can do.

  The voice output unit 8 is configured to be able to output music or sound from the guidance voice at the time of route guidance or the audio function installed in the navigation device N.

The data communication unit 9 includes a transmission / reception unit that performs communication using radio waves, and is configured to acquire traffic jam information from the outside. For example, the data communication unit 9 has VICS (registered trademark) information, an external network (Internet), and traffic jam information. It is comprised so that information can be acquired from a traffic information server. The dangerous area data 5 b stored in the storage unit 5 is configured so that new data can be added via the data communication unit 9.

  The bus line 10 is configured so that the above-described units constituting the navigation device N can be communicably connected.

  According to the navigation device N of the present invention configured as described above, as shown in FIG. 2, when the current time is 10:00 pm, the mode change unit 1c switches the mode of the route search unit 1a because it is midnight. The route searching unit 1a searches for a route that does not select an area or route loaded in the dangerous area data 5b, displays the searched route, and displays a dangerous area around the route, for example, on a map. Therefore, it is possible to guide the route that avoids the dangerous area and to display and notify the dangerous area around the route, thereby prompting the user of the navigation device N to be alerted.

  Next, the operation of the navigation device N of the present invention configured as described above will be described using a flowchart. FIG. 3 is a flowchart showing the operation of the navigation device according to the embodiment of the present invention.

  As shown in FIG. 3, when the destination setting is performed (S1), the navigation device N according to the embodiment of the present invention uses the time information detected by the current position detection unit 2 and the current position information to determine the current time. Is determined by the determination unit 1d and whether or not there is a dangerous area between the current position and the destination (S2), and the current time is 22 When the determination unit 1d determines that the time is between 4:00 and 4 o'clock, and it is determined that there is a danger area between the destination and the destination (S2, YES), the mode change unit 1c changes the search condition of the route search unit 1a. When searching for a route from the current position to the destination, a route for avoiding the dangerous area is searched using the dangerous area data stored in the storage unit 5 (S3). The route to be avoided searched in S3 is superimposed on the map displayed on the display unit 7 (S4), and route guidance from the current position to the destination is started (S5). When the route guidance is being performed, the latitude / longitude detected by the current position detection unit 2 is compared with the latitude / longitude stored in the dangerous area data to determine if there is no dangerous area around the route (around the route). The determination part 1d determines the approach to (S6). If the determination unit 1d determines that the danger area has been approached (S6, YES), the operation control unit 1e displays the danger area on the map displayed on the display unit 7 and the voice output unit 8 has the danger area. (S7). Thereafter, the determination unit 1d determines whether or not the destination has been reached from the latitude and longitude detected by the current position detection unit 2 (S8). If it is determined that the destination has been reached in S8 (S8, YES), the route guidance is terminated (S9).

Note that the determination unit 1d determines that the current time is between 22:00 and 4 o'clock in S2, and it is determined that there is no danger area between the destination and the current time is not between 22:00 and 4 o'clock in S2. When the determination unit 1d determines that there is a danger area between the destination and the determination unit 1d determines that the current time is not between 22:00 and 4 o'clock in S2, the danger area is between the destination and the destination. When it is determined that there is no route (S2, NO), the route search unit 1a searches for the route to the destination with the normal route (S10), and starts route guidance for the normal route searched in S10 (S11). ).
Regarding dangerous area data, if there is data such as violent crime on the route to the destination in a time zone not between 22:00 and 4 o'clock, the determination unit 1d determines whether there is violent crime data, The search condition of the route searching unit 1a may be automatically changed by the mode changing unit 1c, and the route may be searched so as to avoid the danger area corresponding to the violent crime data.

  In S6, when it is not approaching the dangerous area (S6, NO), it is determined whether or not the destination has been reached in S8 (S8), and if it is determined that the destination has been reached (YES in S8). , And the guidance ends (9).

  Further, if it is determined in S8 that the vehicle has not arrived at the destination (S8, NO), the process returns to S6 and the processing is continued.

  The navigation device N of the present invention configured as described above determines whether or not there is a danger area in the route to the destination and the current time when going to the destination, and the route to the destination at midnight time. When searching for a route that avoids the dangerous area, and when there is a dangerous area around the route in the route to the destination, the user of the navigation device N is informed that there is a dangerous area. You can be notified. In particular, route search can be performed and route guidance can be performed so as not to pass through the danger area only at midnight.

  In addition, when searching by the route search unit 1a, a route that avoids the dangerous area between the current position and the destination is searched. However, the present invention is not limited to this. For example, the dangerous area is avoided. When searching for a route, it is possible to use the fact that there are multiple vehicles on the road that cannot be moved due to traffic jams, so the road with traffic jam information is automatically selected as one of the detour routes. A route search may be performed.

  In addition, when searching for a route that avoids the danger area, obtain street information such as supermarkets, convenience stores, and shops from the map data, and search for a route that avoids the dangerous area from the current location to the destination. Alternatively, the route search may be performed preferentially. By doing in this way, you may make it perform the route search which selected the place with much light of a store, a streetlight, and traffic.

  The present invention searches for a route that avoids a dangerous area when traveling to an arbitrary destination at midnight (22:00 to 4), and guides the route when there is a dangerous area around the route. It is useful as a navigation device for notification.

DESCRIPTION OF SYMBOLS 1 Control part 1a Route search part 1b Route guidance part 1c Mode change part 1d Judgment part 1e Operation control part 2 Current position detection part 3 Input part 4 ROM
5 Storage unit 5a Map data 5b Hazardous area data 6 RAM
7 Display unit 8 Audio output unit 9 Data communication unit 10 Bus line N Navigation device

Claims (4)

A navigation device capable of route guidance to a destination,
Current position detecting means for detecting the current position;
Storage means for storing electronic map data and dangerous area data for storing detailed information related to the dangerous area associated with the electronic map data;
Route search means for searching for a route from the current position to the destination;
Display means for superimposing and displaying the route searched by the route search means on the electronic map data;
Route guidance means for guiding the route searched by the route search means;
A mode changing means for determining whether the current time is a certain time zone, and changing the route searching means so as to avoid the danger area when the current time is the certain time zone; and
Determining means for determining whether or not there is a dangerous area around the current position detected by the current position detecting means in the dangerous area data;
A navigation apparatus comprising operation control means for controlling an operation so as to notify a user when it is determined in the determination result of the determination means that the dangerous area is around the current position. .   The navigation apparatus according to claim 1, wherein the map data stores crime occurrence information by latitude and longitude and area.   The mode change unit changes the search mode so that the route search unit searches for a route that avoids a latitude, longitude, and area where the crime occurrence information stored in the map data is present. The navigation device according to claim 2.   The navigation device according to claim 2 or 3, wherein the display means highlights when there is crime occurrence information around the route when the search mode is changed by the mode changing means.

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