JP5408531B2 - Navigation device and program - Google Patents

Description

  The present invention relates to a navigation device and a program for guiding a target intersection by the color of a signal from a traffic light.

  The number of intersections with traffic lights from the vehicle position to the target intersection is calculated, the number is notified to the user, and the target intersection is guided (Patent Document 1). There has been proposed an apparatus that calculates the number of traffic lights up to an intersection, informs the user of the number, and guides the target intersection (Patent Document 2).

JP-A-10-300502 Japanese Patent Laid-Open No. 11-257992

In the case of guiding the target intersection by the number of intersections with traffic lights as in Patent Document 1, the number of intersections that the user has passed must be accurately remembered, and the intersections without traffic lights are counted by mistake. In the case of being amazed or distracted, there is a possibility of turning at an intersection different from the target intersection.
In addition, in the case of notifying the target intersection according to the number of traffic lights as in Patent Document 2, there is a possibility that the way of counting the traffic lights may differ depending on the user, and similarly, there is a possibility of turning an intersection different from the target intersection. There is. For example, as shown in FIG. 5, when there are intersections A and B with traffic lights ahead, and there are two traffic lights (A1, A2) and (B1, B2) in the traveling direction at each intersection, “2 When you turn right at the intersection of the first traffic light, the person who judges the second traffic light as B1 turns right at intersection B, and the person who judges the second traffic light as A2 turns right at intersection A In other words, there may be cases where the guidance based on the number of traffic lights is incorrect.

An object of the present invention is to solve the above-described problems, and an object of the present invention is to make it possible to accurately guide a guidance intersection so that no one makes a mistake.
The present invention provides a navigation apparatus for guiding a route to a destination, based on destination setting means, current location detection means, information storage means for storing map data, and map data stored in the information storage means. Route searching means for searching for a route from the current position detected by the current position detecting means to the destination set by the destination setting means, and traffic signal information acquiring means for acquiring information of traffic signals on the traveling road from outside. When the signal color change timing detected from the traffic signal information acquired by the traffic signal information acquisition means is less than or equal to a predetermined value, guidance at a normal timing before a predetermined distance from the guidance intersection is omitted, and the signal changes. And a control means for guiding a guide intersection on the route by adding a color that has changed at different timings.
Further, the present invention provides a program for controlling a navigation device for guiding a route to a destination, set by a destination setting means from a current location detected by a current location detection means based on map data stored in the information storage means. A step of searching for a route to the designated destination, a step of acquiring traffic signal information on the traveling road by traffic signal information acquisition means by communication from the outside, and a timing at which the color of the signal of the traffic signal changes is detected from the acquired information of the traffic signal When the color change timing of the detected traffic light signal is below a predetermined value, the guidance at the normal timing before the predetermined distance from the guidance intersection is omitted, and the color changed at the timing when the signal changes is added. The computer is caused to execute a step of guiding a guidance intersection on a route.

The present invention can accurately guide the guidance intersection so that no one will make a mistake by using the color of the signal of the traffic light ahead and the timing at which the signal changes for guidance.

It is a block diagram which shows the example of the navigation apparatus of this embodiment. It is explanatory drawing of the example guided again at the timing which changes the color of a signal and a signal. It is explanatory drawing of the example guided at the timing which a signal changes. It is explanatory drawing of the example which guides the timing which a signal changes. It is a figure explaining the prior art example which guides the target intersection by the number of traffic lights.

Hereinafter, this embodiment will be described.
FIG. 1 is a block diagram illustrating a configuration example of a navigation device according to the present embodiment.
Input device 1 composed of a keyboard, mouse, touch panel, operation keys, etc. for inputting information such as starting point, destination, search area, name of facility to be searched, genre, etc., GPS (Global Positioning System) for detecting information on the current position, etc. Current position detection device 2, map data including intersection information, traffic signal information, point data of facilities, navigation data necessary for route search, display / audio guidance data necessary for route guidance, and map data Information storage device 3 for storing a program (application and / or OS) for performing guidance such as display, route search, voice guidance, etc., and map data stored in the information storage device 3 is read out and read out Route search means (4a) for searching for a route to the destination based on the VICS (registered trademark) (Vehicle Information and Communicator ) Information distributed from the ication system), or the bidirectional short range communication (DSRC) used in the automatic toll collection system (ETC) on highways, even if noise occurs during communication Communication with traffic signal antennas and VICS antennas by direct sequence spread spectrum (DSSS) that does not interfere with other communications because noise is diffused at the time of restoration and there is little influence on communication, and does not generate strong signals, In addition, the traffic signal information acquisition means 4b for acquiring the forward traffic signal information from the received radio wave etc. of the mobile phone, on the route based on the signal color of the traffic signal detected from the traffic signal information acquired by the traffic signal information acquisition means and the timing of signal change Control means 4c which guides the guide intersection of the map, as a navigator processing means, a map display process, a route search Processing, display / voice guidance processing necessary for route guidance, and central processing unit 4 for controlling the entire system, communication device 5 for transmitting / receiving to / from the traffic signal antenna and VICS antenna, and information related to route guidance And a display for displaying information output from the control means 4c, a speaker, and other output devices 6.

  FIG. 2 is a diagram for explaining an example in which an intersection is guided by the color of a traffic light and the timing at which the signal changes. There is a guidance intersection 12 that should turn right in front of the road 10 on the route, and the green signal light 21, the yellow signal light 22, and the red signal light 23 of the traffic light 20 are red signal lights at the timing when the vehicle position is P1. Assume that 23 is lit. The navigation device confirms from the traffic signal information in the map database that there is no other traffic signal in front of the traffic signal 20, and receives and acquires the information of the traffic signal 20 from the traffic signal antenna or the VICS antenna, and at the time of the vehicle position P1. It is detected that the red signal is lit, and the timing at which the red signal illuminates for a few seconds and changes to the blue signal is detected. At the normal guidance timing 700m and 300m before the guidance intersection 12, the next red signal is displayed. It is guided by the color of the signal as shown in FIG. 2 (a). Next, at the timing when the vehicle position moves to P2 and changes to a green signal, guidance is performed again as “next green signal is in the right direction” (FIG. 2B). In this way, guidance by the color of the signal of the traffic signal ahead and guidance by the color of the signal changed again at the timing when the signal changed can be accurately guided so that no one will make a mistake at the guidance intersection. It becomes possible.

  FIG. 3 is a diagram for explaining another example of guiding an intersection according to the color of a traffic light and the timing at which the signal changes. There is a guidance intersection 12 to turn right in front of the road 10 on the route. The green signal light 21, the yellow signal light 22, and the red signal light 23 of the traffic light 20 are red signal lights at the timing when the vehicle position is P3. 23 is lit as in the case of FIG. The navigation device confirms from the traffic signal information in the map database that there is no other traffic signal in front of the traffic signal 20, and receives and acquires the information on the traffic signal 20 from the traffic signal antenna or the VICS antenna, and at the time of the vehicle position P3. Assume that it is detected that the red signal is lit, and that the signal changes after a short time, for example, 3 seconds. Normally, it will be guided as “next red light is to the right” at the usual guidance timing 700m and 300m before the guidance intersection 12, but the signal will change after 3 seconds, so there is no guidance here. (Fig. 3 (a)), the vehicle travels for 3 seconds, the vehicle position moves to P4, and guidance is given at the timing when the vehicle turns into a green signal, such as "The next green signal is in the right direction" (Fig. 3 (b) )). In this way, when the signal changes immediately, guidance is performed with the color of the signal changed at the changed timing, so that it is possible to accurately guide the guidance intersection so that no one will make a mistake.

  FIG. 4 is a diagram for explaining another example of guiding an intersection according to the color of a traffic light and the timing at which the signal changes. It is assumed that there is a passing intersection 14 where a traffic light 30 is installed and a guidance intersection 16 where a traffic light 40 is installed and to be turned right in front of the road 10 on the route. The navigation device confirms from the traffic signal information in the map database that there is no other traffic signal in front of the traffic signal 30 and between the traffic signal 30 and the traffic signal 40, and receives and acquires the information of each traffic signal from the traffic signal antenna and the VICS antenna. At the time of own vehicle position P5, it is detected that both the traffic light 30 and the traffic light 40 are lit red, and the traffic light 30 in front is still red for a while. It is assumed that a change to a green signal is detected later. In this case, guidance is made as follows: “Intersections that turn to green light immediately afterwards are to the right” at normal guidance timings such as 700 m and 300 m from the guidance intersection 12 (FIG. 4A). 3 seconds later, it can be seen that the vehicle position has moved to P6 and changed to a green light (FIG. 4 (b)), so right turn right at the intersection 16 without guidance at the timing of the vehicle position P6. can do. Although guidance at the timing of the vehicle position P6 where the signal has changed is omitted here, guidance may be performed again at the vehicle position P6, such as “green light is in the right direction”. Further, since the signal changes immediately at the time of the own vehicle position P5, the guidance may be suspended and the guidance may be performed at the timing when the green signal of the own vehicle position P6 is changed.

  DESCRIPTION OF SYMBOLS 1 ... Input device, 2 ... Current position detection device, 3 ... Information storage device, 4a ... Route search means, 4b ... Traffic signal information acquisition means, 4c ... Control means, 4 ... Central processing unit, 5 ... Communication device, 6 ... Output apparatus.

Claims (4)

In a navigation device that guides the route to the destination,
Destination setting means;
Current location detection means;
Information storage means for storing map data;
A route search means for searching for a route from the current location detected by the current location detection means to the destination set by the destination setting means based on the map data stored in the information storage means;
Traffic light information acquisition means for acquiring information of traffic lights on the road by external communication;
When the timing of changing the color of the signal of the traffic signal detected from the traffic signal information acquired by the traffic signal information acquisition means is less than or equal to a predetermined value, guidance at a normal timing before a predetermined distance from the guidance intersection is omitted, and the signal has changed. A control means for guiding a guide intersection on the route by adding a color changed at the timing;
A navigation device characterized by comprising: 2. The navigation according to claim 1, wherein the control means detects a color and timing of a signal change of each traffic signal at a plurality of intersections ahead and adds a timing together with the color of the signal to guide the guidance intersection. apparatus. The control means guides the guidance intersection as an intersection whose signal change timing is early when the signal change timing of the intersection immediately before the guidance intersection is slower than the timing of the signal change of the guidance intersection. The navigation device according to claim 1 . In a program for controlling a navigation device that guides a route to a destination,
Searching for a route from the current location detected by the current location detection means to the destination set by the destination setting means based on the map data stored in the information storage means;
A step of acquiring traffic signal information on the road by traffic signal information acquisition means by communication from outside;
Detecting a timing at which the color of the signal of the traffic signal changes from the acquired information of the traffic signal;
When the color change timing of the detected traffic light is less than or equal to the specified value, the guidance at the normal timing before the predetermined distance from the guidance intersection is omitted, and the changed color is added at the timing when the signal changes. A step of guiding a guided intersection,
A program that causes a computer to execute.

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