JPH08185595A - Navigation device - Google Patents

Abstract

PURPOSE: To provide a navigation device Which improves the reliability by preventing a user from committing violations of regulation contents in regulated roads without frequently seeing the monitor and putting no restrictions on running courses. CONSTITUTION: Road information including regulation contents of regulated roads is stored in a CD-ROM 5 as the map information recording medium, and the going direction of the vehicle is detected by a gyro detection means 7 as the direction detection means, and the velocity of the vehicle is detected by a velocity detection means 8, and if the user tries to run the vehicle to a regulated road in such direction that he commits a violation of regulations, this state is detected to send out a warning from a speaker 18 as the warning means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a navigation device,
In particular, the present invention relates to a navigation device that prevents accidental violation on a regulated road.

[0002]

2. Description of the Related Art Conventionally, there has been known a navigation device which superimposes and displays map information and a vehicle cursor on a monitor in order to provide guidance to a current position while traveling or a destination.

[0003]

By the way, in the navigation device configured as described above, since the current position is simply recognized and the guidance from the current position to the destination is performed, for example, If you try to proceed on a one-way road or a regulated road that has restrictions such as right turn, left turn, straight ahead prohibition, etc., the driver unexpectedly violates the regulation by relying on the map information on the monitor without noticing the regulation content. There was a concern that it would be lost, and there was a problem of poor reliability.

Therefore, it is necessary to recognize that the road is a restricted road according to the display state of the road on the monitor, or to manually or automatically set the course to the destination to avoid the restricted road. Can be considered.

However, in the case of displaying the regulation information on the monitor, it is always necessary to visually check the monitor, which is not so preferable from the viewpoint of ensuring driving safety, and may be overlooked. Yes, in the case of setting the traveling route to the destination, for example,
It was not suitable for changing the course due to traffic jams or under construction, or for an unscheduled detour.

In view of the above situation, the present invention can prevent the violation of the regulation contents on the regulated road even if the monitor is not frequently seen, and is not influenced by the traveling course, thus improving the reliability. An object of the present invention is to provide a navigation device that can be used.

[0007]

In order to achieve the object, the present invention has a map information recording medium storing road information including the regulation contents of regulated roads, and a direction detecting means for detecting a traveling direction of a vehicle. The present invention is provided with a speed detecting means for detecting the speed of a vehicle and a warning means for detecting in advance a warning when a vehicle is going to violate a regulation on a regulated road and issuing a warning. .

[0008]

In the above-mentioned structure according to claim 1,
Road information including the regulation content of the regulated road is stored in the map information recording medium, the traveling direction of the vehicle is detected by the direction detecting means, the speed of the vehicle is detected by the speed detecting means, and the regulation violation of the regulated road is detected by the warning means. If an attempt is made to proceed in a direction, it will be detected in advance and a warning will be given.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the navigation device of the present invention will be described with reference to FIGS.

In FIG. 1, the navigation device 1 is
CPU2, ROM3, RAM4, C as a map information recording medium that stores road information including regulation contents of regulated roads
D-ROM5, the information signal from this CD-ROM5 R
I / F 6 developed in AM4, gyro detecting means 7 for detecting the bending (moving direction) of the vehicle, speed detecting means 8 for detecting the vehicle speed and calculating the traveling distance from the vehicle speed, and blinking operation of the turn signal lamp on the right side of the vehicle Signal detecting means 9 for detecting, a left signal detecting means 10 for detecting blinking operation of a turn signal lamp on the left side of the vehicle, an I / F 11 for expanding output information from the detecting means 7 to 10 to the CPU 2 and RAM 4, a warning means. 12, an I / F 13 for outputting a warning sound (or a voice, the same applies below) from the speaker 12, an AMP 14, and an antenna 15.
As a GPS 16 and an I / F 17 for expanding a received signal from the CPU 2 and the gyro detecting means 7, an image processing circuit 19 for displaying map information and a vehicle cursor on the monitor 18, and a bit map memory for graphic display. VRAM (video RAM) 20 of the above.

In the above structure, when the navigation device 1 is started up, map information is read from the CD-ROM 5 (or an IC card may be used) and expanded on the RAM 4. Next, the current position of the vehicle is determined by the curve of the vehicle by the gyro detection means 7, the traveling distance detected by the speed detection means 8, the absolute position by the GPS 16, etc., and an image based on the map information corresponding to the determined current position. And the vehicle cursor are displayed on the monitor 18 in an overlapping manner.

When the vehicle is traveling, the map information is read out in real time, and the current position is recognized and the destination is guided while moving the vehicle cursor on the monitor 18 by the above-mentioned method.

At this time, turn right (turn left) in the traveling direction of the vehicle.
If there is a restricted road such as prohibition, straight ahead prohibition (progression prohibition), one-way road, etc., it is detected, and a voice is output from the speaker 12 based on the map information developed on the RAM 4 and the calculated current position. Warning by.

Hereinafter, a control example of the CPU 2 and the like from the detection of the regulated road to the warning will be described for each pattern based on FIGS. 2 to 4.

(Right Turn or Left Turn Prohibition) As shown in FIG. 2 (A), when there is an intersection J1 where the right turn prohibition is restricted in the forward direction, the control is as shown in FIG. 2 (B). still,
In FIGS. 2A and 2B, the case where the restricted road is prohibited from turning to the right is disclosed. However, even if the restricted road is prohibited from turning to the left, it is substantially the same, and only the right turn is disclosed here.

(Step 1) In step 1, RAM 4
Based on the map information developed above and the current position calculated from the absolute position by the gyro detecting means 7, the speed detecting means 8 and the GPS 16, a restricted road which is an intersection and a right-turn prohibition is predetermined forward in the traveling direction while traveling. Distance (eg 20
0 m) is detected, the process proceeds to step 2 when there is a regulated road, and this detection (monitoring) is continued when there is no regulated road.

(Step 2) In Step 2, simultaneously with the detection of the regulated road, a warning sound such as a buzzer is output from the speaker 12 to inform the driver that the regulated road is ahead a predetermined distance in the traveling direction. And transition. In addition, when notifying that there is a restricted road by voice instead of warning sound, for example, "There is a right turn prohibition intersection 200 m ahead rather than just saying that there is a restricted road. 』
For example, the regulation contents may be output at the same time.

(Step 3) In step 3, the vehicle speed detecting means 8 detects whether or not the traveling speed is 30 km / h or less, and if it is 30 km / h or less, step 4
If it is 30 km / h or more, the process proceeds to step 7.

(Steps 4 and 5) In Step 4, the presence / absence of an output signal from the right signal detecting means 9 is detected, and when there is an output signal from the right signal detecting means 9, the traveling speed is 30 km / h or less. Since it is in the deceleration running state of
When it is determined that the vehicle will make a right turn, the routine proceeds to step 5, where a warning sound is output from the speaker 12 and the routine loops back to step 1 to detect the next restricted road. When there is no output signal from the right signal detecting means 9, the process proceeds to step 6.

(Step 6) In step 6, whether or not the vehicle has passed the intersection is detected by the current position. If the vehicle has passed the intersection, the process loops to step 1; otherwise, the process goes to step 3. Looped.
When the process is looped to step 1, it is determined that the traveling speed becomes 30 km / h or less because of left turn, waiting for a signal, or being caught in traffic.

(Step 7) In Step 7, as in Step 4, the presence or absence of the output signal from the right signal detecting means 9 is detected. If the output signal is output from the right signal detecting means 9, the traveling speed is 30 km. If the turn signal lamp is blinked before the lane is changed or the vehicle is decelerated, the process goes to step 3 and there is no output signal from the right signal detecting means 9. Moves to step 8.

(Step 8) In Step 8, whether or not the vehicle has passed the intersection is detected based on the current position. If the vehicle has passed the intersection, it is determined that the vehicle has gone straight and the process loops to Step 1 to pass the intersection. If not, step 3
Looped to.

(Prohibiting straight ahead) As shown in FIG. 3 (A), when there is an intersection J2 where straight ahead prohibition is restricted in the forward direction,
The control is as shown in FIG.

(Step 11) In Step 11, as in Step 1, it is detected whether the regulated road which is an intersection and straight ahead is a predetermined distance ahead of the present position in the traveling direction when the vehicle is traveling. Shifts to step 12, and when there is no regulated road, this detection is continued.

(Step 12) In step 12, as in step 2, a warning sound is output from the speaker 12 so that the driver recognizes that there is a restricted road ahead in the traveling direction, and the process proceeds to step 13.

(Steps 13 and 15) In step 13, right signal detecting means 9 or left signal detecting means 10
The presence or absence of an output signal from the
Alternatively, when there is an output signal from the left signal detecting means 10, it is determined that the vehicle does not go straight and the process proceeds to step 14,
If there is no output signal from the right signal detecting means 9 or the left signal detecting means 10, it is determined that the vehicle will proceed straight ahead, and step 1
5, the warning sound is output from the speaker 12 in step 15, and the process loops back to step 11.

(Step 14) In Step 14, whether or not the vehicle has passed the intersection is detected by the current position. If the vehicle has passed the intersection, the process loops to Step 11, and if the vehicle has not passed the intersection, the process goes to Step 13. Looped.

(One-way) As shown in FIG. 4 (A), when there is a one-way restricted T-shaped road J3 in the forward direction,
The control is as shown in FIG.

(Step 21) In Step 21, similarly to Steps 2 and 12, it is detected whether or not the regulated road which is a T-shaped road and is one-way while traveling is a predetermined distance ahead of the present position in the traveling direction. If yes, the process proceeds to step 22, and if there is no regulated road, this detection is continued.

(Step 22) In step 22, similarly to step 2, the speaker 12 outputs a warning sound that there is a restricted road ahead in the traveling direction to let the driver recognize it, and the process proceeds to step 23.

(Steps 23 and 25) In Step 23, when the reverse direction of the one-way traffic is due to the left turn (the same applies to the right turn), the presence or absence of the output signal from the left signal detecting means 10 is detected. Is detected, and if there is no output signal from the left signal detecting means 10, it is determined to turn right, and the process proceeds to step 24. If there is an output signal from the left signal detecting means 10, it is determined to turn left. Then, the process proceeds to step 25, in which the alarm sound is output from the speaker 12 and the process loops to step 21 again.

(Step 24) In Step 24, it is detected whether or not the vehicle has passed through the T-junction, based on the current position. If the vehicle has passed the T-junction, the process loops to Step 21 where the vehicle passes through the T-junction. If not, the process loops to step 23.

As described above, C as a map information recording medium is used.
The road information including the regulation content of the regulated road is stored in the D-ROM 5, the regulated road is detected, and when the vehicle is going to advance in the direction in violation of the regulated content of the regulated road, this is detected in advance. By issuing a warning, it is possible to improve the reliability without accidental violation.

In the above-mentioned embodiment, the control contents regarding the regulated road such as right turn (left turn), straight ahead, one-way road, etc. are disclosed. However, for example, when an attempt is made to invade a private road which is mistaken for a general road not on the map. Also, the present invention is not limited to the above-mentioned embodiment such as dead end.

Further, for example, in the case of a truck or the like, the weight of the own vehicle, the vehicle height, etc. are inputted in advance so that the regulation content of the regulated road is a weight limitation (for example, a bridge or a road is narrowed from the middle). It can also be applied when there is a height restriction (overpass, etc.).

[0036]

As described above, in the navigation device of the present invention, the map information recording medium storing the road information including the regulation contents of the regulated road, and the speed detecting means for detecting the speed of the vehicle are provided. Since the vehicle is provided with a direction detecting means for detecting the traveling direction of the vehicle and a warning means for detecting the traveling direction of the regulated road in advance to warn the driver in advance, the monitor is frequently monitored. Violation of the regulation contents on the regulated road can be prevented without looking, and the reliability can be improved without being influenced by the traveling course.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of a navigation device according to the present invention.

FIG. 2A is an explanatory diagram of a right turn (left turn) prohibited intersection, and FIG. 2B is a flowchart diagram of a control example in the case of a right turn (left turn) prohibited intersection.

[FIG. 3] Similarly, (A) is an explanatory diagram of an intersection where straight ahead is prohibited,
(B) is a flowchart of a control example in the case of an intersection where straight ahead is prohibited.

FIG. 4A is an explanatory view of a one-way T-shaped road,
(B) is a flowchart of a control example in the case of a one-way T-shaped road.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Navigation device 5 ... CD-ROM (map information recording medium) 7 ... Gyro detection means (direction detection means) 8 ... Speed detection means 18 ... Speaker (warning means)

Claims (1)

[Claims] 1. A map information recording medium in which road information including regulation contents of regulated roads is stored, direction detecting means for detecting a traveling direction of a vehicle, speed detecting means for detecting a speed of the vehicle, and A navigation device comprising: warning means for detecting a warning against a violation of a regulation in advance and issuing a warning.