JP2001255167A - Navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To issue a warning message, when a turn signal lamp of own vehicle is not turned on at an intersection on a guide route, where the vehicle is supported to turn. SOLUTION: The present position of own vehicle is obtained on the basis of a signal from a position-measuring device 13. It is decided, on the basis of map data recorded to a ROM disk 11, whether or not the vehicle is near a position within a prescribed distance (e.g. 70 m) from the intersection in the advancing direction. After the vehicle nears, a right/left turn signal from the turn signal lamp from the vehicle is monitored by a turn signal lamp signal input part 6. When it is detected that the turn signal lamp is not turned on, the warning message is displayed to a display 24 and at the same time, announced in voice from a loud speaker 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for performing route guidance according to a preset route.
A warning message is issued to the driver especially when the own vehicle approaches the intersection to be turned within a predetermined distance, but does not emit a turn signal, and when it turns at an intersection to turn without issuing a turn signal. The present invention relates to an emitting navigation device.

[0002]

2. Description of the Related Art A navigation device that provides guidance of a vehicle and enables a driver to easily arrive at a desired destination is detected by detecting a position of the vehicle (own vehicle position).
Reading out map data near the vehicle position from an optical storage medium such as a ROM, displaying a map image on a display screen, and superimposing a vehicle position mark (own vehicle mark) on a predetermined location on the map image; Then, as the current position changes due to the traveling of the vehicle, the own vehicle mark on the screen is moved, or the own vehicle mark is fixed at a predetermined position such as the center of the screen and the map is scrolled, so that the vehicle is always located near the own vehicle position. Map information can be understood at a glance.

Further, such a navigation device has a route guidance function of searching for a guidance route from the position of the vehicle to a destination, displaying the guidance route on a map, and providing route guidance to the destination. When a desired destination is input by the driver, the route guidance unit of the navigation device automatically searches for a route that is considered to be optimal from the current vehicle position to the destination, and a node that configures the searched route ( (Latitude and longitude) are successively stored in the guidance route memory. Then, at the time of actual traveling, a search is made for a guidance route in the map display area on the display screen from the node sequence stored in the guidance route memory, and the guidance route is displayed so as to be distinguishable from other roads.

[0004] Further, when the position of the vehicle approaches within a predetermined distance of the next guidance intersection, the navigation device displays an intersection guide map (an enlarged view of the intersection and an arrow indicating the traveling direction at the intersection, the name of the intersection, the vicinity of the intersection) on the display screen. In addition to displaying the landmarks at the intersection, a voice that guides the user to the intersection, such as "Turn right 300m ahead" or "Right turning soon," is also output from the speaker, so that the intersection that the driver is approaching can be displayed. You can see in which direction you should go.

[0005]

When the driver uses the route guidance function of the navigation device, he or she often does not know how to get to the desired destination from the current position. There are many roads on which the driver runs for the first time and roads that are not well known. Therefore, the driver drives the vehicle according to the guidance of the navigation device, but, for example, a complex intersection where a plurality of roads intersect, an intersection with poor visibility where buildings line up on both sides of the road, an intersection where there is no landmark, In a place where intersections are close to each other, there is a case where it is difficult to determine which intersection should be turned even if guidance of the intersection is provided by screen display or voice. For this reason, the driver is distracted by the enlarged view of the intersection displayed on the display screen in order to determine the intersection to be turned even though he knows that he will turn at the intersection in front, and does not give a turn signal of the turn direction There was a problem such as suddenly turning. This act was a traffic offense and was dangerous for following vehicles and oncoming vehicles.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a navigation device which takes in a signal of a turn signal of a host vehicle and gives an announcement to a driver so as to emit a turn signal at an intersection to be turned. .

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a navigation apparatus for performing route guidance according to a preset route, comprising: a vehicle position measuring device for measuring a current vehicle position; An information storage device that stores route information; a route search unit that searches for a route from the vehicle position to a destination; a route storage unit that stores a route searched by the route search unit; and guides the route. Notification means for outputting guidance information, a route guidance control means for outputting a signal for performing route guidance based on the route to the notification means, and a direction for detecting a right / left turn signal from a direction indicator of the own vehicle. An indicator detection means, wherein the route guidance control means is arranged so that the own vehicle position measured by the own vehicle position measuring device approaches within a predetermined distance of an intersection to be bent, and the direction indicator detection means Can be achieved by when the right turn signal direction indicator is not detected, it outputs a warning message through the notification means by.

That is, when the vehicle approaches within a predetermined distance of an intersection to be turned, it is determined whether or not the driver has issued a turn signal, and if not, a warning message is output to output the turn signal. By doing so, the driver can be prevented from forgetting to turn the turn signal.

Further, according to the present invention, there is provided a route travel determining means for determining whether or not a vehicle position measured by the vehicle position measuring device is on a route stored in the route storage means. The route guidance control means further comprises:
During the time from when the vehicle position measured by the vehicle position measuring device approaches within a predetermined distance of an intersection to be bent until the vehicle passes through the intersection, the direction indicator detecting means turns the left / right signal of the direction indicator. Is not detected, and when the own vehicle position after passing through the intersection is on the route by the route traveling determining means, the warning message is output via the notifying means.

[0010] That is, when the driver has turned around an intersection to be turned without issuing a turn signal, a warning message is output to inform the driver that the driver has turned without turning on the turn signal. It is possible to eliminate forgetting to put out the turn signal.

[0011]

(A) Outline of the present invention FIG. 1 is a diagram for explaining an outline of the present invention. (A) is a diagram illustrating an example of a warning message output from the navigation device when the driver does not output a direction indicator even when the own vehicle approaches within a predetermined distance of a turning intersection on the guidance route, FIG. 6B is a diagram illustrating an example of a warning message output from the navigation device after the vehicle has turned, when the vehicle has turned at a turning intersection without issuing a turn signal.
In the figure, MP1 and MP2 are map displays displayed on the display screen of the navigation device, and an enlarged view of a turning intersection is displayed on the right screen obtained by dividing the screen into two. CM1 and CM2 are vehicle position marks indicating the current vehicle position, CP is a turning intersection approaching, RT1 and RT2 are guidance routes to destinations, and DE1 and DE2 are vehicle position CM.
Display of the remaining distance from 1, CM2 to winding intersection CP, RM
Is a landmark that is a landmark at a facility near the turning intersection CP, DM1 and DM2 are warning messages by screen display,
VM1 and VM2 are warning messages by voice output.

In FIG. 1A, the navigation device determines that the vehicle position CM1 is at a predetermined distance from the turning intersection CP (for example, 70 mm).
When approaching m), the signal of the turn signal of the own vehicle is checked, and if the turn signal is not output, a warning message DM1 is displayed on the map display MP1 on the display screen, and a sound warning is issued. The message VM1 is output from the speaker to urge the driver to give a turn signal. As a result, before the intersection to be bent,
It is possible to eliminate forgetting to put out the turn signal.

In (b), when the driver has passed the turning intersection CP without issuing a turn signal, the navigation device keeps the vehicle position CM2 even after passing the intersection CP.
Is on the guidance route RT2, the warning message D is displayed on the map display MP2 on the display screen.
M2 is displayed, and a warning message VM by voice is displayed.
2 is output from the speaker, and a turn signal is issued at the turn intersection to advise the driver to turn. This allows
The driver can know that he / she has turned at an intersection to be turned without giving a turn signal, and can make sure to give a turn signal at an intersection to be turned.

(B) Configuration of Navigation Apparatus of the Present Invention FIG. 2 is a configuration diagram of a navigation apparatus according to an embodiment of the present invention. 11 is a ROM disk such as a DVD-ROM for recording a database of map information, route information, audio information and the like;
12 is map information recorded on the ROM disk 11,
A ROM disk controller 13 controls a rotary drive mechanism, a servo mechanism, and the like to read path information and the like. A position measuring device 13 measures a current position of the vehicle, a vehicle speed sensor that detects a moving distance, and a moving direction. Gyro to detect,
It is composed of a position calculation CPU, a GPS receiver and the like.
Reference numeral 14 denotes a remote controller for performing menu selection operation, enlargement / reduction operation of a display map, cursor movement (map scroll) operation, operation of inputting a point of a destination or a waypoint by a driver,
Reference numeral 15 denotes a remote control interface that receives a wireless signal from the remote control 14 and decodes the signal. Reference numeral 16 denotes a direction indicator signal input unit for receiving a left turn signal and a right turn signal from a vehicle direction indicator. 17 denotes a guidance voice based on the searched guidance route, and no direction indicator is output at a turning intersection on the route. A speaker 18 outputs a warning message or the like at the time of sounding. A guidance voice 18 or a warning message to be output from the speaker 17 is read from the voice data of the ROM disk 11, or D / A converted from voice synthesis data of the ROM 20. And a sound output control unit for controlling the output of the corresponding sound.

Reference numeral 19 denotes a processor (CPU) for controlling the entire navigation apparatus and performing various arithmetic processing, 20 a ROM for storing a program for performing a process such as a route search and data necessary for the processing, synthesized voice data, and the like; A RAM 22 for temporarily storing the searched route guidance information and data being processed is a display 22 for generating a map image based on the map information and the route information read from the ROM disk 11 and controlling display of various information. A controller 23, a VRAM for synthesizing various images generated by the display controller 22 and temporarily storing the image data until the images are displayed on a display; 24, a display device such as a liquid crystal display; 25, exchange of various information in the navigation device It is a system bus to perform.

(C) Processing Flow of Navigation Apparatus of the Present Invention FIG. 3 is a flowchart showing a warning message output processing of the navigation apparatus of one embodiment of the present invention. First, the current position (departure place) of the host vehicle required for searching for a guidance route is acquired from the position measuring device 13 (step 101), and the driver operates the remote controller 14 on a screen for setting a destination to obtain a desired destination. Is input to set a destination point (step 102). Once you ’ve set your destination point,
The CPU 19 activates a program related to route search stored in the ROM 20, reads map data and road data necessary for route guidance from the ROM disk 11, and executes processing for reading from the current vehicle position to a desired destination. Search for directions. Then, when the search process of the guidance route is completed and the process of storing the route in the RAM 21 is completed, guidance of the guidance route is started together with the start of the own vehicle (step 10).
3).

Next, the current position of the vehicle measured by the position measuring device 13 as needed is acquired, and the vehicle position is tracked on a map (guidance route) (step 104). Next, the CPU 19 determines whether or not the acquired vehicle position has approached within a predetermined distance of an intersection on the route to be bent (step 105).
Set to FF (set the initial value to OFF) (Step 1)
06). If the vehicle position is not within a predetermined distance of the turning intersection, the process returns to step 104 to track the vehicle position.

After setting the direction indicator flag to OFF in step 106, the CPU 19 determines whether or not the turn signal of the own vehicle's direction indicator has been input from the direction indicator signal input unit 16, that is, the driver indicates the direction. It is determined whether or not the vehicle is out (Step 107). If a right / left turn signal has been input, the direction indicator flag is set from OFF to ON (Step 108). When the right / left turn signal is not input, as shown in FIG. 1A, a warning message DM1 is generated by the display controller 22 and displayed on the screen of the display device 24, and the warning message VM1 is sound output controlled. Prepared by the unit 17 and output from the speaker 17 (step 109).

Thereafter, it is determined whether or not the vehicle position measured by the position measuring device 13 has passed the intersection (step 110). If not, the flow returns to step 107 to return to the right of the direction indicator. It is determined whether a left turn signal has been input. If it is determined that the vehicle has passed the intersection,
It is determined whether or not the position of the own vehicle after passing is on the guidance route currently being guided (step 111). That is, by checking whether the intersection has been turned right or left as instructed, the driver intentionally or accidentally goes straight through the intersection, or turns in the opposite direction, and is on the guidance route. Is determined.

If the position of the own vehicle after passing the intersection is on the guidance route being guided, the contents of the direction indicator flag are checked and it is determined whether or not the own vehicle is turned on. It is determined whether or not the turn signal of the own vehicle is output during a period from approaching within a predetermined distance of the turning intersection to passing the turning intersection (step 112). In step 111, when it is determined that the own vehicle position after passing is not on the guidance route, the guidance route to the node on the deviated guidance route that is considered to be closest to the own vehicle position at that time, or The guidance route from the own vehicle position to the destination at the time is re-searched, and when the search processing is completed, guidance of the re-searched guidance route is started (step 113). Then, step 114
Move to

In step 112, when the direction indicator flag is set to OFF, as shown in FIG. 1B, a warning message DM2 by screen display and a warning message VM2 by voice are outputted (step 112). 1
14) When the direction indicator flag is set to ON and when the guidance of the guidance route is started in step 113, the CPU 19 determines that the own vehicle position measured by the position measurement device 13 is a desired one. It is determined whether or not the vehicle has arrived at the destination (step 115). If the own vehicle position has arrived at the destination, the route guidance processing ends, and if not, the process returns to step 104 to track the current position of the own vehicle.

[0022]

As described above, according to the present invention, if the driver does not give a turn signal even when the own vehicle approaches within a predetermined distance of the intersection to be turned next while traveling on the guidance route, Since the action is automatically detected and a warning is issued, the driver notices that the turn signal is not being issued, and can turn on the turn signal just before the intersection.

Further, according to the present invention, it is automatically detected that the vehicle has turned at an intersection without issuing a turn signal, and a warning is issued after the vehicle turns at the intersection. It is possible to know that the vehicle has turned at the intersection without going out, and it is possible to try to emit a turn signal at an intersection to be turned thereafter.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an outline of the present invention.

FIG. 2 is a configuration diagram of a navigation device according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a warning message output process of the navigation device according to one embodiment of the present invention.

[Explanation of symbols]

 MP1, MP2 ··· Map display CM1, CM2 ··· Own vehicle position mark CP · · · Turn intersection RT1, RT2 · · · Guidance route DE1, DE2 · · · Display the remaining distance to the turn intersection CP RM · · · Landmark DM1, DM2 · Warning message on screen VM1, VM2 Warning message by voice 11. ROM disk 12. ROM disk control unit 13. Position measuring device 14. Remote controller 15. Remote controller interface 16. Direction indicator signal input Unit 17 Speaker 18 Audio output control unit 19 Processor (CPU) 20 ROM 21 RAM 22 Display controller 23 VRAM 24 Display device 25 Bus line

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Claims (2)

[Claims] 1. A navigation device for performing route guidance according to a preset route, an own vehicle position measuring device for measuring a current own vehicle position, an information storage device storing map information and route information, Route search means for searching for a route from a position to a destination; route storage means for storing a route searched by the route search means; notification means for outputting guidance information for guiding the route; Route guidance control means for outputting a signal for performing route guidance based on the information to the notification means; and direction indicator detection means for detecting a right / left turn signal from a direction indicator of the own vehicle. The vehicle position measured by the vehicle position measuring device approaches within a predetermined distance of an intersection to be bent, and the direction indicator detecting means detects a right / left turn signal of the direction indicator. When not, a navigation device and outputs a warning message through the notification means. 2. The route guidance control unit further comprising: a route traveling determination unit configured to determine whether a vehicle position measured by the vehicle position measurement device is on a route stored in the route storage unit. Between the vehicle position measured by the vehicle position measuring device within a predetermined distance of the intersection to be bent and before the vehicle passes through the intersection, the right of the direction indicator by the direction indicator detection means. 2. A warning message is output via the notifying means when a left turn signal is not detected and the position of the own vehicle after passing through the intersection is on the route by the route traveling determining means. Navigation device.