JP2878895B2 - Vehicle navigation display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation display system for displaying map information on a display device of a vehicle.

[0002]

2. Description of the Related Art A vehicle navigation display system of this type is disclosed in, for example, Nissan Motor Co., Ltd. in June 1991, "New Model Vehicle Manual (Y32-1) NIS".
Introduction of SAN Cedric Gloria Y32 Series Vehicles "on pages F69 to F86.

In this navigation display system for a vehicle, map information of a map data device is read by an arithmetic and control unit and displayed on a display device, and the position and traveling direction of the vehicle are determined on the basis of information from position detecting means and the like. The information is obtained by the arithmetic and control unit and displayed on the map information displayed on the display device. Further, in addition to this information, traffic information and the like are also displayed.

[0004] Thereby, the driver can know the traffic information of the current position and the traveling direction based on the map information.

[0005]

By the way, road information includes regulation information such as one-way traffic, right-turn prohibition, left-turn prohibition, and entry prohibition by construction. It is desirable that such regulation information can be known before reaching the intersection. Also,
If the traveling direction is prohibited, it is desirable to be able to know immediately that the entry is prohibited after the traveling direction is determined (for example, after operating the turn signal switch).

[0006] However, conventionally, such regulation information has not been included in the map information. For this reason, at the present time, at the time when the driver reaches the intersection in the traveling direction, the driver visually recognizes the road sign and determines whether or not the road in the right or left turn direction or the straight ahead direction is prohibited. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a navigation display system for a vehicle which allows the user to know entry prohibition information (regulation information) before the vehicle reaches an intersection.

[0008]

In order to achieve this object, the present invention provides a method in which map information of a map data device is read by an arithmetic and control unit and displayed on a display device, and based on information from position detecting means. in the position and vehicle navigation display system was set to the direction of travel allowed determined by the arithmetic and control unit displays on the map information displayed on the display device of the vehicle, the arithmetic and control unit, before
The traveling direction of the vehicle relative to the road on which the vehicle is traveling
Restriction information of the road intersecting ahead is obtained from the map data device.
And read whether the intersecting road is prohibited from entering the vehicle.
The intersection road is subject to vehicle entry prohibition regulations.
If this is the case, the road display status is displayed differently from other roads.
If the intersecting road does not have a vehicle entry restriction,
The present invention is characterized in that it is a vehicle navigation display system that keeps the current display .

[0009]

According to this structure, the arithmetic and control unit reads road information intersecting the intersection in the traveling direction of the vehicle from the map data device and intersects the intersection displayed on the display device. The road display state in the vehicle entry prohibition direction on the road can be displayed differently from other road displays.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, 1 is an automobile (vehicle) such as a passenger car, 2 is a cabin of the automobile 1, 3 is an instrument panel in front of the cabin 2, 4 is a CRT or the like arranged on the instrument panel 3. A display device 5 such as a liquid crystal display is a CD deck (map data device) for map information such as a CD-ROM provided at the rear of the vehicle compartment 2.

The CD deck 5 is a device for reproducing map information recorded on an optical disk. In addition to information such as road layouts and place names, the optical disc also has regulation information such as one-way traffic, right turn prohibition, and left turn prohibition.

Reference numeral 6 denotes a terrestrial magnetism sensor as an azimuth sensor mounted on the roof 1a of the automobile 1, and reference numeral 7 denotes a gyroscope as an angular velocity sensor disposed at the rear of the passenger compartment 2.

Further, reference numeral 8 denotes a beacon antenna disposed at the rear of the cabin 2, and reference numeral 9 denotes a beacon receiver connected to the beacon antenna 8. The beacon receiver 9 receives a radio wave from a beacon 10 for road information grounded near an intersection (not shown in FIG. 4) of the road R through the beacon antenna 9 as shown in FIG. And output a road information signal. The beacon 10 receives road information from the road information center 11 or the like, and transmits the road information on a radio wave. This road information includes traffic congestion information, regulation information based on road construction and other circumstances, and the like.

Reference numeral 12 denotes a global positioning system GPS (Global Positioning System).
Positioning System) GPS antenna, 13 is GP
It is a GPS receiver connected to the S antenna 12. The GPS receiver 13 receives a radio wave from the satellite 14 via the GPS antenna 12, and outputs a position signal of the vehicle. In addition, this system uses what is used for measuring the position of a ship or an aircraft.

Reference numeral 15 denotes a navigation device main body (drive guide control unit) provided at the rear part of the cabin 2. The navigation device body 15 has a control circuit including a central processing unit 16 and a system control memory 17 storing the control contents of the central processing unit 16.

The central processing unit 16 includes a geomagnetic sensor 6, a gyroscope 7, a beacon receiver 9, a GPS receiver 1
3. Signals from various detecting means such as a wheel speed sensor 18 (vehicle speed sensor) and a vehicle mission signal transmitting unit 19 are input. Output signals from the turn signal switch 20 and the like are input to the central processing unit 16 via the interface I1, and map information data from the CD deck 5 is input to the central processing unit 16.

Further, the central processing unit 16 is connected to the display device 4 and the alarm device 21 via interfaces I2 and I3, respectively.

Next, the function of the control circuit will be described.

When the power supply of the vehicle is turned on, the control contents stored in the system control memory 17 are read into the central processing unit 16, and the display device 4 and the CD deck 5 are brought into a controllable state.

In this state, the map button 4a of the display device 4
When the is pressed, the central processing unit 16 receives the position signal from the GPS receiver 13, and also receives the azimuth signal from the geomagnetic sensor 6, the angular velocity signal from the gyroscope 7, the vehicle speed signal from the wheel speed sensor 18 (vehicle speed sensor), In response to the forward / backward signals from the vehicle mission signal transmission unit 19,
Calculate the current position and traveling direction of the vehicle.

Further, the central processing unit 16 reads map information data including the current position from the CD deck 5 based on the current position information of the vehicle, and causes the display device 4 to display the map information based on the data. The mode for displaying this map information includes a wide area map mode for displaying a large area,
There is a detailed map mode that displays a small area. This mode switching is performed by the mode selection button 4b of the display device 4. 3 and 5 show display examples of a map image when the detailed map mode is selected.

When the detailed map mode is selected, the central processing unit 16 controls the vehicle 1 as shown by the arrow A in FIG.
Is displayed on the map of the display device 4.

In addition, for example, when the vehicle 1 approaches the intersection S1 in the traveling direction in FIG. 6, the central processing unit 16 determines that "one-way, right-turn prohibition, right-turn prohibition, From the restriction information such as "prohibition of entry due to left turn prohibition", it is determined whether any of the roads a, b, and c that intersect with the road R at the intersection S1 approaching at present is prohibited.

In the case where entry is prohibited, roads a,
The display state of the entry prohibited from among b and c is changed.
For example, if the road a is prohibited, the road a is displayed as a broken line as shown in FIG. Similarly, if the road e among the roads d, e, and f is prohibited at the next intersection S2,
After the automobile 1 has passed the intersection S1 as shown in FIG.
The road e is displayed as a broken line in the same manner as described above.

It should be noted that in the above embodiment, the roads a,
Although an example in which the display of e is displayed by a broken line has been described, the display is not necessarily limited to this, and the display colors of the roads a and e may be different from those of other roads instead of the display of the broken line. Alternatively, the display may be performed using a display other than the broken line. Alternatively, the roads a and e for which entry is prohibited may be displayed by solid lines, and other approachable roads may be displayed by broken lines.

As another embodiment, when the vehicle 1 approaches the intersection S1 in the traveling direction, the beacon receiver 9 receives the road information signal from the beacon 10 near the intersection S1,
The road information signal may be input to the central processing unit 16 to determine the restriction information. In this case, the central processing unit 16 includes, in the road information signal, the restriction information such as “prohibition of entry due to road construction or other circumstances” among the roads a, b, and c that intersect at the current approaching intersection S1. Is set to determine whether the

When the vehicle 1 approaches the intersection S1 in the traveling direction, the right signal from the turn signal switch 20
A left turn signal is input to the central processing unit 16, and the right / left turn signal is, for example, an entry prohibition direction (in this embodiment, a left turn prohibition direction).
If so, an alarm signal is immediately output from the alarm device 21 to notify the driver of entry prohibition.

[0029]

As described above, according to the present invention, the arithmetic and control unit controls the vehicle on the road on which the vehicle is traveling.
The regulation information of the road intersecting ahead in the traveling direction is
Data read from the data
It is determined whether or not there is, and the intersection road is prohibited from entering the vehicle.
If there are restrictions, make the road display status different from other roads
Displayed, and the intersecting road has no vehicle entry prohibition regulations
In this case, the current display is used,
You can know reliably and clearly the breach information associated with before the vehicle reaches the intersection.

Further, as shown in the embodiment, the arithmetic and control unit reads road information intersecting the intersection in the traveling direction of the vehicle from a road information beacon grounded along the road or reads the map information. A road device intersecting the intersection in the traveling direction of the vehicle is read from the data device, and when the vehicle approaches the intersection for a predetermined distance, a vehicle in a road intersecting the intersection based on a signal from a turn signal switch. In the case of a signal indicating the direction of entry prohibition, when the warning means is operated to notify the occupant of entry prohibition, if the direction of travel is entry prohibition, it is known that entry is prohibited immediately after the direction of travel is determined. be able to.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a control circuit of a vehicle navigation display system according to the present invention.

FIG. 2 is an explanatory diagram of an automobile including the control circuit shown in FIG.

FIG. 3 is a front view of the display device shown in FIG.

FIG. 4 is an explanatory diagram of the vehicle navigation display system of FIGS.

FIG. 5 is an explanatory diagram showing another example of a map display of the display device of FIG. 3;

FIG. 6 is an explanatory diagram showing a partial display example of a map display in FIG. 5;

FIG. 7 is an explanatory diagram showing a partial display example of a map display in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automobile (vehicle) 5 ... CD deck (map data device) 6 ... Geomagnetic sensor (azimuth sensor) 7 ... Gyroscope (angular velocity sensor) 9 ... Beacon receiver 13 ... GPS receiver 15 ... Navigation device body 18 ... Wheel speed Sensor 20: Turn signal switch 21: Warning device (warning means) S1: Intersection a, b, c, d, e, f: Road

Claims (1)

(57) [Claims] An arithmetic control device reads map information from a map data device and displays the map information on a display device. The arithmetic control device determines a position and a traveling direction of a vehicle based on information from a position detecting means. In the vehicle navigation display system configured to display on the map information displayed on the display device, the arithmetic and control unit is configured to control a road on which the vehicle is traveling.
Information on the road that intersects in front of the traveling direction of the vehicle
Is read from the map data device, and the intersecting road is
It is determined whether or not the vehicle is prohibited, and the intersection road is determined.
If there is a vehicle entry restriction, the road display
It is displayed differently from the road, and the crossing road enters the vehicle.
A navigation display system for a vehicle , wherein the current display is used if there is no prohibition regulation .