JPH0763568A - Navigation device for vehicle - Google Patents

Abstract

PURPOSE:To output a designation arrival signal when the distance from the present position of a vehicle to a traveling designation is less than a prescribed value, and it is judged that the vehicle is in the parking state, and precisely erase the display of a designated direction mark. CONSTITUTION:A display control device 6 reads the map information necessary for display from a CD-ROM 3, and displays a map according to it on a display device 7. On the basis of the present position information inputted from a locator part 4 and the designation information inputted from a setting SW board 5, a present paint mark Mc and a designation mark Mt are displayed on the substantially center part of the displayed map and a required position thereof, respectively. The device 6 also displays the arrow showing the direction of the designation and the distance to the designation on the map when the designation is not on the map displayed at that time. When a vehicle parking signal is inputted from a vehicle state monitor 8 when the distance from the present position of the vehicle to the traveling designation is less than a prescribed value, the mark Mt is erased from the map.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation device mounted on a vehicle such as an automobile, and more particularly to a device for displaying a current position of a vehicle and a travel destination on a map.

[0002]

2. Description of the Related Art In this type of navigation device, the current position (current driving position) of the vehicle is detected from the traveling distance and traveling direction of the vehicle by a map matching method or the like, and the above information is detected from map information stored in a CD-ROM or the like. The map information including the detected current position is read out and displayed on a screen such as a CRT, and the current position mark Mc indicating the current position of the vehicle and the destination mark Mt indicating the traveling destination set by the occupant as shown in FIG. 4, for example. Is displayed on the map. The occupant visually recognizes the positional relationship between the current position mark Mc of the vehicle and the destination mark Mt on the map displayed on the screen, and receives the guidance of the traveling route.
As shown in the figure, the current position mark Mc and the destination mark Mt
There is also a straight line connecting between and. If the destination is not currently displayed on the map, the arrow indicating the direction of the destination and the distance to the destination are displayed on the map, for example, as shown in FIG.

Conventionally, in the above-described vehicle navigation device, when a predetermined traveling destination erasing switch is operated or a traveling destination is newly set, a manual canceling operation for erasing a previous destination mark is performed. Type and automatic cancellation type that detects the distance from the current position of the vehicle to the traveling destination and automatically judges that the destination mark has been reached and erases the destination mark when this distance becomes less than a predetermined value There is a source of.

[0004]

However, the above-mentioned manual canceling type is the same as the conventional one even after reaching the destination unless the traveling destination erasing switch is operated or the traveling destination is newly set. The destination mark may continue to be displayed meaninglessly, the displayed contents may be against the will of the occupant, and the destination mark is always erased when the traveling destination erase switch is operated. It may be erased undesirably. On the other hand, the automatic cancellation type does not cause the problem like the manual cancellation type, but when the vehicle runs near the destination, the display of the destination mark is erased and the guidance to the destination is accurately performed until the end. There is a possibility that there is no.

An object of the present invention is to accurately estimate and judge that a vehicle has arrived at a destination, and based on this estimated judgment, properly erase the display of the destination direction mark and display a meaningless destination mark. It is an object of the present invention to provide a vehicular navigation device that does not continue to be erased and in which the destination mark is not erased before the vehicle arrives at the destination and the destination mark is not undesirably erased by an erroneous operation.

[0006]

The present invention will be described with reference to FIG. 1 which is a claim correspondence diagram. In the present invention, a present location detecting means 101 for detecting a present location of a vehicle and a travel destination setting means for setting a travel destination are provided. 102 and map information storage means 10
Display means 104 for displaying a map based on the map information read out from 3
And a destination mark indicating the current location of the vehicle detected by the current location detection unit 101 and a destination mark indicating the traveling destination set by the traveling destination setting unit 102 are displayed on the displayed map. The present invention is applied to a vehicular navigation device including a display control means 105 for Then, the calculating means 106 for calculating the distance from the current position of the vehicle to the traveling destination, the distance determining means 107 for determining whether the distance calculated by the calculating means 106 is a predetermined value or less, and the vehicle is parked. A vehicle state determination means 108 for determining whether or not there is a signal output for outputting a destination arrival signal when it is determined that the distance calculated by the calculation means 106 is less than or equal to a predetermined value and the vehicle is parked. The display control means 105 is provided with a destination mark erasing section 105A for erasing the destination mark from the map upon receiving the destination arrival signal, thereby solving the above problems. In particular, the invention of claim 2 is such that, when the engine is started after a lapse of a predetermined time or more from the stop of the engine, it is determined that the vehicle is in the parked state in association with the engine start. Claim 3
According to another aspect of the present invention, there is provided a destination mark erasing operation member which is operated to erase the traveling destination mark, and when the destination reaching signal is output and the traveling destination erasing operation member is operated, the destination mark erasing operation member is operated. Is deleted from the map.

[0007]

When the distance from the current position of the vehicle to the traveling destination is equal to or less than a predetermined value and it is determined that the vehicle is parked, the signal output means 109 outputs a destination arrival signal. Destination mark erasing section 105A of display control means 105
Receives the destination arrival signal and erases the destination mark on the map. According to this, it is possible to prevent the destination mark from being displayed meaninglessly even after the destination arrives. Further, if the destination mark is erased as the destination arrival signal is output and the traveling destination erasing operation member is operated, the previous destination is judged by the occupant after the destination is reached. The mark is erased.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows an embodiment of a vehicle navigation device according to the present invention. This navigation device includes a geomagnetic sensor 1, a wheel speed sensor 2, and a CD-ROM 3
The locator section 4, the setting switch board 5, the display control device 6, the display device 7, and the vehicle state monitor section 8 are used by being mounted on a vehicle such as an automobile.

The geomagnetic sensor 1 detects the traveling direction (traveling direction) of the vehicle from the geomagnetism and outputs it to the locator section 4 as traveling direction information. The wheel speed sensor 2 detects the traveling speed of the vehicle from the wheel speed in order to detect the traveling distance of the vehicle, and outputs this to the locator unit 4 as speed information. The CD-ROM 3 stores a plurality of map information in advance.

The locator unit 4 includes the CD-ROM 3 and the traveling direction information and speed information input from the sensors 1 and 2.
The current position of the vehicle on the road on which the vehicle is traveling is detected by the map matching method on the basis of the map information stored in the table, and the current position information is output to the display control device 6. The setting switch board 5 is operated by an occupant to set a traveling destination and outputs destination information indicating the destination to the display control device 6. The vehicle state monitor 8 turns on / off an ignition switch (not shown), that is, operates the engine.
In addition to detecting the non-operation, when the ignition switch is turned on after a predetermined time has passed since the ignition switch was turned off, it is determined that the vehicle is parked,
The vehicle parking signal is input to the display control device 6.

The display control device 6 takes in map information necessary for display from the CD-ROM 3, displays a map corresponding to this map information on the display device 7 as shown in FIG. 4, and inputs it from the locator section 4. Current location information,
Based on the destination information input from the setting switch board 5, an arrow-shaped present position mark Mc is displayed at a substantially central portion of the displayed map, and a star-shaped destination mark Mt is displayed at a required position.

The display control device 6 also calculates the distance from the current position of the vehicle to the traveling destination based on the destination information input from the setting switch board 5 and the current position information input from the locator section 4, and the destination is If it is not on the currently displayed map, the arrow indicating the direction of the destination and the distance to the destination are displayed on the map, for example, as shown in FIG. When the vehicle parking signal is input from the vehicle state monitor 8 when the distance from the current position of the vehicle to the traveling destination is equal to or less than a predetermined value, the destination mark Mt is deleted from the map.

FIG. 3 shows an operation flow of the vehicle navigation device. First, in step S301, the locator unit 4 inputs the traveling direction information from the geomagnetic sensor 1 and the traveling speed information from the wheel speed sensor 2, respectively, and the vehicle travels based on these information and the map information stored in the CD-ROM 3. The current position of the vehicle on the road is measured.

Next, in step S302, the display control device 6 determines the distance OD from the current position of the vehicle to the destination based on the destination information input from the setting switch board 5 and the current position information input from the locator section 3. Calculate,
In the next step S303, it is determined whether or not the distance OD has become equal to or less than a predetermined value. When the distance OD exceeds the predetermined value, the process returns to step S301, and the current position measurement and the distance calculation to the destination are repeated.

When the distance OD becomes equal to or less than the predetermined value, the vehicle state monitor unit 8 determines the vehicle state (step S).
304 to S307) are performed. First, in step S304, the ignition switch is turned off, and when it is turned off, the process proceeds to step S305 to start a timer (not shown). Next, at step S306, the ignition switch is waited until it is turned on. When it is turned on, at step S307, it is determined whether the time measured by the timer, that is, the off time of the ignition switch (engine stop time) is equal to or longer than a certain time. If the off time of the ignition switch is over a certain time,
When the occupant parks the vehicle and leaves the vehicle for a predetermined period of time or more, and in this case, the distance OD from the vehicle's current position to the destination is equal to or less than a predetermined value. It is estimated that the vehicle has arrived at the destination and the occupant has done something at the destination, and inputs the vehicle parking signal to the display control device 6.

In step S308, the display control device 6 determines that the vehicle has arrived at the destination, and deletes the previous destination mark on the diff display device 7 from the map. On the other hand, if it is determined in step S307 that the ignition switch off time is less than the predetermined time, the process returns to step S304. According to the above, when the vehicle is restarted after reaching the destination, the previous destination mark, which is no longer required to be displayed, is erased from the display device 7 without any special operation, and The inconvenience that a meaningful destination mark is displayed forever can be avoided.

In the configuration of the above embodiment, the locator section 4 serves as the current location detecting means 101 and the setting switch board 5
Is the traveling destination setting means 102, the CD-ROM 3 is the map information storage means 103, the display device 7 is the display means 104, and the display control device 6 is the display control means 105, the computing means 106, the distance determining means 107 and the signal output. Means 1
09, and the vehicle state monitor unit 8 sets the vehicle state determination means 108.
Respectively.

6 to 8 show another embodiment. In this embodiment, as shown in FIG. 6, a traveling destination erasing switch 9 operated by an occupant is provided by a touch panel switch or the like mounted on the display device 7. Other configurations are the same as those in FIG.

FIG. 7 shows an operation flow in this embodiment, and steps S401 to S403 are processes corresponding to step S308 of FIG. That is, the processing of FIG. 7 is performed after steps S301 to S307 described in FIG. If it is determined in step S307 that the ignition switch has been off for a certain period of time or more, that is, if the vehicle has arrived at the destination, the process proceeds to step S401 in FIG. 7, and as shown in FIG. In addition to displaying the destination erasing message Me on the display device 7, the buttons By and Bn of the traveling destination erasing switch 9 including a touch panel switch mounted on the display device 7 are displayed on the display device 7. Next, in step S402, it is determined whether or not the button By or Bn is touched by the occupant, and if the result is affirmative, in step S403, the previous destination mark on the display device 7 is erased to end the process, and the negative result is obtained. Then, the processing is terminated while the destination mark remains.

According to this embodiment, at the time of re-driving after the vehicle reaches the destination, the previous destination mark which is no longer required to be displayed is confirmed by the occupant after confirming that the destination mark is not required to be displayed. It is erased from the display device 7.

In the above description, when the ignition switch is turned on after a predetermined time has passed since the ignition switch was turned off, it is determined that the vehicle is parked and the vehicle parking signal is output. A signal indicating that the side brake has been tightened for a predetermined time or more, or a signal indicating that the door of the vehicle has been locked from the outside may be used as the vehicle parking signal.

[0022]

As described above, according to the present invention, when the distance from the current position of the vehicle to the traveling destination is less than a predetermined value and it is determined that the vehicle is parked, the destination arrival signal is sent. Since it is output and the destination mark is deleted upon receiving this destination arrival signal, the display of the destination mark may be deleted before the vehicle reaches the destination or due to an erroneous operation, or after the destination is reached. It is possible to avoid the inconvenience that the previous destination mark continues to be displayed meaninglessly during restart. Especially, in the case where a traveling destination deletion switch is provided, the destination arrival signal is output,
Moreover, if the display of the destination mark is erased only after the confirmation operation that the destination mark is not required to be displayed is performed by the occupant, the display of the destination mark will not be erased against the intention of the occupant. Further, by determining that the vehicle is in the parked state when the engine is started after a lapse of a predetermined time after the engine is stopped, it is possible to reliably detect the parked state of the vehicle.

[Brief description of drawings]

FIG. 1 is a complaint correspondence diagram.

FIG. 2 is a block diagram showing a configuration of a control system of the vehicle navigation device according to the embodiment.

FIG. 3 is a flowchart illustrating the operation of the embodiment.

FIG. 4 is a diagram showing a screen display example in the navigation device.

FIG. 5 is a diagram showing a screen display example in the navigation device.

FIG. 6 is a block diagram showing a configuration of a control system of a vehicle navigation device according to another embodiment.

FIG. 7 is a flowchart illustrating the operation of another embodiment.

FIG. 8 is a diagram showing an example of screen display in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Geomagnetic sensor 2 Wheel speed sensor 3 CD-ROM 4 Locator part 5 Setting switch Hood 6 Display control device 7 Display device 8 Vehicle condition monitor part 9 Driving destination erasing switch 101 Current location detecting means 102 Driving destination setting means 103 Map information storage Means 104 Display Means 105 Display Control Means 105A Destination Mark Eraser 106 Computing Means 107 Distance Judging Means 108 Vehicle State Judging Means 109 Signal Output Means

Claims (3)

[Claims] 1. A present location detecting means for detecting a present location of a vehicle, a traveling destination setting means for setting a traveling destination, a map based on map information read from a map information storage means, and a display device for displaying the map. Display control means for displaying a current position mark indicating the current position of the vehicle detected by the current position detection means and a destination mark indicating the traveling destination set by the traveling destination setting means on the displayed map. In the vehicle navigation device, a calculating means for calculating the distance from the current position of the vehicle to the traveling destination, a distance determining means for determining whether the distance calculated by the calculating means is a predetermined value or less, and the vehicle is parked. Vehicle state determining means for determining whether or not the vehicle is in a state, the distance calculated by the calculating means is equal to or less than a predetermined value, and the vehicle is parked. Signal output means for outputting a destination arrival signal when it is determined that the display control means receives the destination arrival signal and erases the destination mark from the map on the map. A vehicular navigation device comprising: 2. The vehicle state determining means determines that the vehicle is in a parked state when the engine is started after a predetermined time or more has passed since the engine was stopped. 1. The vehicle navigation device according to 1. 3. A destination mark erasing operation member operated for erasing a traveling destination mark, wherein the destination mark erasing section outputs the destination arrival signal and a traveling destination erasing operation member. The vehicle navigation device according to claim 1, wherein the destination mark is deleted from the map when is operated.