JP2012122733A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device capable of giving more appropriate guidance to prevent a vehicle from starting hastily at an intersection having a pedestrian-vehicle separation signal even not during route guidance.SOLUTION: A vehicle-mounted navigation device is configured to comprise present location detection means for detecting a present location, a map data storage for storing map data corresponding to a latitude path including pedestrian-vehicle separation signal intersection data, approach determination means for determining whether or not the present location detected by said present location detection means has approached the pedestrian-vehicle separation signal intersection data stored in said map data storage, stop determination means for determining whether or not said vehicle is at a stop, location determination means for determining whether or not said vehicle is at the head at the pedestrian-vehicle separation signal intersection when said stop determination means determines the vehicle is at a stop, and notification means for giving a notification when said location determination means determines that said vehicle is at the head at said pedestrian-vehicle separation signal intersection.

Description

  The present invention relates to a navigation device capable of displaying a current position on an electronic road map and setting a destination for route guidance.

  As a conventional navigation apparatus that performs intersection guidance, a navigation apparatus that searches for a route that reflects the scramble intersection cost is known (see, for example, Patent Document 1). In addition, there is known a navigation device that guides in advance traffic signal information having attributes (for example, time difference type, arrow type) during route guidance (see, for example, Patent Document 2).

JP 7-174575 A JP 2007-232573 A

  However, in a conventional navigation device that provides guidance for intersections, it is not possible to perform route search to avoid scramble intersections or to guide traffic signal information during route guidance in advance unless route guidance is set for a destination. There was a problem. In addition, there is a problem in that unnecessary traffic signal information is preliminarily guided while the vehicle is running.

  Therefore, the present invention has been made to solve the conventional problems, and can provide more appropriate parting departure prevention guidance to an intersection where a pedestrian separation signal is present even when route guidance is not being performed. An object is to provide a navigation device.

  In order to achieve the above object, a navigation device of the present invention is a navigation device mounted on a vehicle, and a map corresponding to a latitude path including current position detection means for detecting a current position and pedestrian separation signal intersection data. A map data storage unit storing data, and an approach determination unit for determining whether or not the current position detected by the current position detection approaches the pedestrian separation signal intersection data stored in the map data storage unit And a stop determining means for determining whether or not the vehicle is stopped, and determining whether or not the vehicle is positioned at the head with respect to the pedestrian separation signal intersection when the stop determining means determines that the vehicle is stopped. It is characterized by comprising position determination means and notification means for notifying when the vehicle is at the head of the pedestrian separation signal intersection by the position determination means.

  According to the navigation device of the present invention configured as described above, when the vehicle approaches and stops at the head of the pedestrian separation signal, the pedestrian separation signal can be prevented from being started without being route-guided.

  Further, the approach determining means of the navigation device of the present invention is characterized in that the latitude / longitude information of the current position detected by the current position detecting means and the latitude / longitude of the pedestrian separation signal intersection data stored in the map data storage unit. It is characterized by judging from information.

According to the navigation device of the present invention configured as described above, the latitude and longitude of the pedestrian separation signal intersection data stored in the map data storage unit using the latitude and longitude information of the current position detected by the current position detecting means. It can be determined whether or not the user is approaching by comparing with the information.

  According to the present invention, it is possible to provide guidance for preventing a parting departure when the vehicle approaches and stops at the head of the intersection where the pedestrian separation signal exists, and is unnecessary when the approach is other than the head or does not stop. Prevention becomes possible.

The block diagram which shows the structure of the navigation apparatus in embodiment of this invention. The flowchart which shows operation | movement of the navigation apparatus in embodiment of this invention. Schematic diagram showing how to check whether there is a pedestrian separation signal intersection at the intersection in front of the vehicle position Schematic diagram showing how to check whether the vehicle is located at the head of the intersection in the head judgment unit Schematic diagram illustrating the operation of the embodiment of the present invention

  Hereinafter, a navigation device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention.

  As shown in FIG. 1, the navigation device 100 according to the embodiment of the present invention includes a current position detection unit 101, a map database 102, a memory 103, a control unit 104, a sound output unit 105, and a display unit 106. Yes.

Here, the current position detection unit 101 is configured to be able to acquire the latitude and longitude of the current position.
The map database 102 is configured such that a road map of electronic map data to be displayed is stored, and pedestrian separation signal presence / absence information is stored as intersection information in the road map.
The memory 103 can temporarily store data when the navigation device 100 operates, and is used when the control unit 104 operates.

The control unit 104 includes an approach determination unit 104a, a stop determination unit 104b, and a head determination unit 104c, and is configured to control the operation of the navigation device 100.
Here, the approach determination unit 104a determines, using the road map stored in the map database 102, whether or not there is an intersection having pedestrian separation signal information around the current position acquired by the current position detection unit 101. It is configured to be able to.
The stop determination unit 104b is configured to be able to determine that the vehicle is stopped when a change in the current position detected by the current position detection unit 101 is not updated for a certain period. Further, the stop determination unit 104b may determine whether or not the vehicle is stopped based on the vehicle speed pulse supplied from the vehicle, and using the change in the current position of the current position detection unit 101 and the vehicle speed pulse. A similar effect can be obtained even if the vehicle is determined to stop.
The head determination unit 104c can determine that the current position acquired by the current position detection unit 101 is on the road in the map database 102 and the head is the intersection when there is an intersection having pedestrian separation signal information in the immediate vicinity of the road. It has become.
The control unit 104 is configured to perform enlarged view display and voice guidance when the head determination unit determines that it is the head.

  The sound output unit 105 is configured to output sound guidance, and is configured by, for example, a speaker.

  The display unit 106 is configured to be able to display map data, current position, and detailed information at an arbitrary position in the navigation device 100. The display of the display unit 106 is configured to be controlled by the control unit 104.

  Next, the operation of the navigation device according to the embodiment of the present invention described above will be described using a flowchart. FIG. 2 is a flowchart showing the operation of the navigation device in the embodiment of the present invention.

  As shown in FIG. 2, the navigation apparatus 100 according to the embodiment of the present invention first detects the current position by the current position detection unit 101 (S1). The road data corresponding to the current position detected in S1 and the nearby intersection data are acquired from the electronic map data stored in the map database 102, and the current position is associated with the road data. The current position detection unit 101 performs the above processing periodically separately from the main flow thereafter. Further, the term “periodic” refers to a unit of 1 second, for example.

Next, the electronic map data stored in the map database is searched for whether there is a pedestrian separation signal intersection around the current position detected in S1 (S2). If it is determined in S2 that there is no pedestrian separation signal intersection around the current position (NO in S2), the process returns to S1 to measure again whether the current position has changed. If it is determined in S2 that there is a pedestrian separation signal intersection around the current position (S2, YES), the distance between the current position detected in S1 and the pedestrian separation signal intersection searched in S2 is calculated. (S3). Then, the current position is detected again by the current position detection unit 101 (S4). Is the pedestrian separation signal intersection approaching from the current position based on the latitude and longitude of the current position detected in S1 and the change in latitude and longitude detected in S4? It is determined by the approach determination unit 104a whether or not (S5). If it is determined in S5 that the vehicle is not approaching (S5, NO), the process returns to S3 to perform processing. In S5, if the approach determination unit 104a determines that the current position is approaching the pedestrian separation signal intersection (S5, YES), the stop determination unit 104b determines whether or not the vehicle is stopped ( S6). If it is determined in S6 that the vehicle is not stopped (S6, NO), the process returns to S3 and the process is repeated. If it is determined in S6 that the vehicle is stopped by the stop determination unit 104b (S6, YES), the head determination unit 104c determines whether or not the current position of the vehicle is stopped at the head of the pedestrian separation signal intersection ( S7). If it is determined in S7 that the position where the vehicle is stopped is not the head of the pedestrian separation intersection (S7, NO), the process returns to S3. Further, when it is determined by the head determination unit 104c that the vehicle is stopped at the head of the walking vehicle separation signal intersection (S7, YES), the vehicle stops at the walking vehicle separation guidance intersection using the sound output unit 105 and the display unit 106. A voice or display guidance is given to the user (S8).
In the stop determination unit 104b, for example, when the stop time of the vehicle is 1 second, it is determined that the vehicle is stopped, and when it is less than 1 second, it is determined that the vehicle is not stopped.

  Here, how to check whether or not there is a pedestrian separation signal intersection at the intersection ahead of the host vehicle position of the road data corresponding to the current position acquired in S1 in the control unit 104 of the navigation device 100 will be described with reference to the drawings. . FIG. 3 is a schematic diagram showing how to check whether there is a pedestrian separation signal intersection at the intersection ahead of the host vehicle position.

As shown in FIG. 3, the own vehicle traveling road 400, an intersection road 401 intersecting with the own vehicle traveling road 400, an intersection 402 at the intersection of the own vehicle traveling road 400 and the intersecting road 401, and the own vehicle position Is a vehicle 403, and the distance from the vehicle 403 to the intersection 402 is a distance 404.
First, the control unit 104 calculates a road distance 404 from the own vehicle 403 to the intersection 402 where the preceding pedestrian separation signal exists. To do. The approach determination unit 104a determines whether or not the distance 404 calculated by the control unit 104 is equal to or less than a threshold distance to the intersection, determines that it is approaching the intersection, and proceeds to the next. For example, if the threshold is 100 m, it is determined that there is a pedestrian separation signal intersection from the current position if it is less than 100 m, and if it is 100 m or more, it can be determined that there is no pedestrian separation signal intersection.

  Next, the determination of whether or not the own vehicle is positioned at the intersection head will be described with reference to FIG. FIG. 4 is a schematic diagram showing how to check whether or not the own vehicle is positioned at the head of the intersection in the head determination unit.

  As shown in FIG. 4, the own road 501 intersects with the own road 500, the intersection 502 where the own road 500 crosses the intersection 501 and the width of the road. The road width 503 shown, the own vehicle position as the own vehicle position 504, the width of one side lane of the intersection road read from the map database 102 is the width 505, the width 506 of the pedestrian crossing read from the map database 102, The total length will be described as a vehicle length 507, and the distance from the vehicle to the intersection will be described as a distance 508. The head determination unit 104c is configured to determine that the vehicle stops at the head of the intersection if the distance from the own vehicle to the intersection 508 ≦ (road data width 505 + crosswalk width 506 + own vehicle length 507). ing.

  It should be noted that there is no particular limitation on how to determine whether or not the vehicle is located at the head of the intersection in the head determination unit. For example, there is no vehicle ahead by recognizing a pedestrian crossing using an in-vehicle camera. This may be recognized, or a proximity sensor may be used to recognize that there is no vehicle ahead.

  Next, a specific display method of the navigation device in the embodiment of the present invention will be described using schematic diagrams. FIG. 5 is a schematic diagram showing a display example of the navigation device according to the present invention.

  As shown in FIG. 5, the electronic map data displayed on the display unit 106 of the navigation device 100 displays a traveling road 300, an intersection road 301, an intersection 302, and a current position 303. When the current position 303 is located at the head of an intersection with a signal, an enlarged screen 304 and a message 308 that image the separation of walking cars are displayed at the intersection of the display unit, so that the person currently driving the vehicle stops. It can be notified that the intersection is a pedestrian separation signal intersection. In FIG. 5, a pedestrian is shown as a pedestrian 305, a pedestrian crossing 306, and a pedestrian passable direction indicating a pedestrian passable direction 307.

  As described above, according to the embodiment of the present invention, it is determined whether or not the vehicle has stopped at the head of the pedestrian separation signal intersection using the map database 102 including the pedestrian separation signal information, the stop determination unit 104b, and the head determination unit 104c. When it is determined that it is determined that the vehicle is stopped at the pedestrian separation signal intersection, the driver can be alerted to prevent the driver from giving up without being aware of the pedestrian separation signal intersection.

  INDUSTRIAL APPLICABILITY The present invention is useful as travel assistance in a navigation device that can determine the type of intersection ahead of the host vehicle from the current position and perform caution ventilation regarding an appropriate intersection according to the type of intersection.

DESCRIPTION OF SYMBOLS 100 Navigation apparatus 101 Current position detection part 102 Map database 103 Memory 104 Control part 104a Approach judgment part 104b Stop judgment part 104c First judgment part 105 Sound output part 106 Display part 300 Progress road 301 Intersection road 302 Intersection 303 Present position 304 Enlarged screen 305 Pedestrian 306 Pedestrian crossing 307 Pedestrian passable direction 400 Own vehicle traveling road 401 Intersection road 402 Intersection 403 Own vehicle 404 Distance 500 Own vehicle traveling road 501 Interroad 502 Intersection 503 Road width 504 Own vehicle position 505 Width 506 Width 507 Length 508 distance

Claims (2)

A navigation device mounted on a vehicle,
Current position detecting means for detecting the current position;
A map data storage unit storing map data corresponding to a latitude route including pedestrian separation signal intersection data;
An approach determining means for determining whether or not the current position detected by the current position detection approaches the pedestrian separation signal intersection data stored in the map data storage unit;
Stop determination means for determining whether or not the vehicle is stopped;
Position determining means for determining whether or not the vehicle is positioned at the head with respect to the pedestrian separation signal intersection when the stop determining means determines that the vehicle is stopped;
A navigation device comprising: notification means for notifying the position determination means when the vehicle is at the head of the pedestrian separation signal intersection.   The approach judging means judges from the latitude / longitude information of the current position detected by the current position detecting means and the latitude / longitude information of the pedestrian separation signal intersection data stored in the map data storage section. The navigation device according to claim 1.

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