JPH0313813A - Present-position displaying apparatus of moving body - Google Patents

Abstract

PURPOSE:To improve operability by forcibly setting a present-position displaying mode when a moving body starts running during setting operation, and allowing the display to return when the moving body is stopped. CONSTITUTION:The outputs of a distance sensor 1 and a direction sensor 2 are inputted into a processor 3, and the present position of a moving body is obtained. A processor 10 corrects the present position based on map data stored in a map-data memory medium 5. The result is stored in a running locus memory device 4 and displayed on a display device 7 through a display control device 8. When the mode is set at an operating mode and the moving body starts running during the inputting period of the destination with an operating device 9, the mode is forcibly changed into a present-position displaying mode. When the moving body is stopped under the state wherein the mode is forcibly changed, the mode is returned to the original operating mode again.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a current position display device for a moving object that displays the current position of the moving object on a road map displayed on a screen in advance while determining the current position of the moving object. .

Recently, when driving a mobile object such as a car in an unfamiliar area, for example, in order to provide appropriate guidance so that the driver does not deviate from the planned driving course or get lost, the driving of the mobile object has been changed. Accordingly, the current position of the moving object on the two-dimensional coordinates is determined by cumulative calculations while detecting the traveling distance and traveling direction of the moving object using a distance sensor and a direction sensor. A mobile object that allows the driver to check the current position by displaying the current position, which changes from moment to moment, on a road map that is projected on the screen in advance and updating it sequentially using point information. A current position display device has been developed.

Conventionally, in the current position display device of this type of moving object,
If the current position of the moving object deviates from the road on the map due to cumulative errors when calculating the current position due to the accuracy of each sensor or calculation accuracy or deformation of the road map, you can manually move the current position to correct the position. I make it possible for them to do so.

In addition, in order to provide more optimal driving guidance for moving objects, the destination can be set on the road map displayed on a single screen and marked with a destination mark, and the road map displayed on the screen can be searched. I make it possible for them to do so.

In order to perform operations such as correcting the current position, setting a destination, or searching for a road map, the current position display device of the mobile object must be set in the current position display mode and the operation execution mode. It is necessary to be able to selectively switch to

Conventionally, however, the mode can be changed at any time by operating a switch, but the switch operation for switching the mode while the moving object is running, and various key operations for executing operations in the operation mode. It is complicated and not desirable.

Therefore, in order to make it possible to perform operations such as correcting the current position, setting a destination, or searching for a road map only when the moving object is stopped, there are switch operations and operation modes for changing modes while the moving object is moving. In order to prohibit various key operations for executing operations at a certain time, it is conceivable to freeze all operations at the moment just before the moving object moves, but if the mode immediately before moving is switched to operation mode, When the moving body is running, the display of the current position will be interrupted.

Furthermore, it is conceivable to forcibly switch to the current position display mode when the moving body is traveling, but in this case, the operations performed up to the point immediately before traveling would be wasted.

1. The present invention has been made in consideration of the above points, and includes an operation mode that allows operations such as correcting the current position, setting a destination, and searching for a road map only when the moving object is stopped. If you enable switching and forcibly switch to the current position display mode when the moving object starts running, if the moving object starts running during the operation, the moving object will be forced to switch to the current position display mode when the moving object starts running. Another object of the present invention is to provide a current position display device for a moving object that automatically returns to the operating mode when a stopped state of the moving object is detected, thereby improving operability.

From the 11th sentence onwards, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the basic configuration of a current position display device for a moving object according to the present invention, and shows a distance sensor 1 that outputs a pulse signal for each unit traveling distance according to the rotation of the tires of the moving object.
A direction sensor 2 uses a rate type that detects the angular velocity of a change in one direction and outputs a signal proportional to the amount of change in direction as the moving object moves, and a distance sensor 1 counts the number of pulse signals and moves. Along with measuring the distance your body has traveled.

A first arithmetic processing bag that cumulatively calculates the current position of a moving object on the X-Y coordinates for each fixed travel distance by calculating the traveling direction of the moving object according to the output signal of the direction sensor 2! (microcomputer) 3, a travel trajectory storage device 4 that sequentially stores data on the current position that changes every moment as the mobile object travels, and stores and holds it as finite continuous position information of the mobile object; A map information storage medium 5 in which data is stored, and a storage medium reproducing device l that selectively reads map data from the storage medium 5! 6, and display the current position of the mobile object on a screen on which a predetermined road map is projected based on the read map data, along with the traveling trajectory and the direction of movement of the mobile object at the current position, as necessary. Display device 7 and a display control device (MMI) 8 that controls the display on the display device 7 and a display control device (MMI) 8 that sets a road map to be displayed on the display device 7, and also displays the traveling trajectory and the traveling direction of the moving body at the current position. and an operating device W9 that can selectively give display commands such as the following, and change display format settings such as movement of the map displayed on the screen, rotation of the travel trajectory, selection of the display scale ratio, etc. , based on the travel trajectory data and the road map data displayed on the screen, performs matching processing of each pattern of the travel trajectory of the moving object and the road on the map, and moves onto the road where the matching has been performed. A second arithmetic processing unit (microcomputer) 10 corrects the current position data calculated by the first arithmetic processing unit so that the current position of the body is displayed.

Note that the 1 display control device 8 displays the road map and the current position of the moving body on the screen of the display device 7 based on the data of the road map for 1 display and the data of the current position, and also controls the operation input from the operating device 9. The display form of the screen is changed appropriately according to the command.

In such a current position display device for a moving object, a predetermined road map is displayed on the screen of the display device 7, and the first arithmetic processing device 3 displays information on the map according to the movement of the moving object from the starting point. The current position on the X-Y coordinates is calculated moment by moment according to a preset map scale.

The obtained current position data is delivered to the second arithmetic processing unit 10, and then sequentially sent to and stored in the travel trajectory storage device 4, where it is updated and retained as a series of travel trajectory data.

Then, in the second arithmetic processing bag 2!10, matching processing for each pattern between the traveling trajectory of the moving object and the road on the map is executed for each fixed distance traveled by the moving object, and the matched road is The traveling trajectory and the current position of the moving object are corrected so that the current position and traveling trajectory are on top.

The corrected data of the current position is given to the display control bag 5!8 together with the data of the currently detected direction, and under its control, it is displayed on the screen of the 1 display device if7 as shown in FIG. A display mark Ml indicating the current position of the moving body and a display mark M2 indicating the traveling direction of the moving body at the current position are displayed on the road map, and when a command to display the traveling trajectory is issued, the traveling trajectory is displayed. The mark M3 is displayed in a simulated manner following the running state of the moving object.

At this time, the display mark M1 indicating the current position of the moving object is always in the center of the screen in the current position display mode, and as the moving object moves, the road map scrolls as appropriate depending on the direction of movement. The current location of the moving object will be displayed on the road map.

The present invention provides a current position display device for a moving body configured as described above, which includes correction of the current position on a road map,
An operation means that can perform operations such as setting a destination on a road map and searching the road map, a means for detecting the stopped and running states of a moving object, and a means for detecting the stopped state of a moving object. a mode switching means that can switch from the current position display mode to an operation mode in which the above operation is executed; The present invention is characterized in that it has means for switching, and means for automatically returning to the operation mode when the stopped state of the moving body is detected during the forcedly switched current position display mode.

As mentioned above, the traveling trajectory and the current position of the moving object are corrected by the matching process in the second processing unit 5! A separate operation means for correcting the current position is provided so that the running trajectory and the current position of the moving object can be manually corrected as necessary before the moving object reaches a certain travel distance. ing.

The operating means that can perform operations such as correcting the current position on the road map, setting a destination on the road map, and searching the road map is actually executed by input operations on the operating device W9.

In addition, the means for detecting each state of a moving body, such as stopping or running, is
In reality, the display control device 8 reads the presence or absence of a pulse signal from the distance sensor l, and when the pulse signal is output from the distance sensor 1, the moving object is in a running state, and the pulse signal is output from the distance sensor l. If not, it is detected that the moving object is in a stopped state.

In addition, there are two mode switching means capable of switching from the current position display mode to the operation mode for executing the operation when the stopped state of the moving body is detected.Actually, the operation from the operation device 9 This is executed under the control of the display control device 8 in response to an input command for switching to the mode.

In addition, there is also a means for forcibly switching to the current position display mode when the running state of the moving object is detected in the operation mode, and a means for forcibly switching to the current position display mode when the moving state of the moving object is detected in the forcedly switched current position display mode. The means for automatically returning to the operation mode are actually respectively executed under the control of the display control device 8.

FIG. 3 shows an example of how various operation keys are installed on the operation device 9.

In the figure, 1 is the 0N10 F F key for screen display, 2 is the map scale selection key group, and K3 is 0N10 for destination mode.
FF key, K4 is the destination set key, 5 is the destination clear (erase) key, K6 is the position correction key, K7 is the trajectory erase key, K8 is the map search key, and 9 is the current position to return to the current position display mode in operation mode. Each shows a return key.

A cover 11 is provided over each of the keys K3 to K9 to prevent erroneous operation, and the cover 11 is opened when each key is operated.

In addition, in the figure, ST is a stick that can scroll the road map displayed on the screen 12 in eight directions (up and down, left and right, and diagonally), and RK.

LK is a rotation key for rotating each mark of the travel trajectory and direction of movement of the moving body displayed on the screen 13 to the right or left.

Each means according to the present invention is specifically executed as follows, for example, when the current position is to be corrected.

Now, as shown in FIG. 4(a), when the current position display mode is in effect and the mark M1 of the current position of the moving body and the mark M3 of the travel trajectory are displayed off the road on the map, the fourth As shown in Figure (b), when you press 6 on the 1 position correction key (at this time, 6 is displayed on that key as an indicator).
(the LED provided at The color changes from to red.

Then, by entering the position correction mode, the road map displayed on the screen can be scrolled by operating the stick ST, and each rotary key RK can be performed.

Each mark M of the travel trajectory and direction of travel by LK operation
2. M3 can now be rotated, and as shown in Fig. 4(c), the current position is adjusted by operating the stick ST, and the traveling trajectory and direction of travel are adjusted by operating the rotation keys RK and LK. Then, the position of the moving body is corrected so that its current position and travel trajectory match the road map.

Next, when 9 is pressed on the current position return key (at this time, the LED 6 on the position correction key goes out), the position correction is set and the current position display mode is returned, as shown in Fig. 4(d). As shown in the figure, the current position mark Ml of the mobile object, the traveling direction mark M2, and the travel trajectory mark M3 are displayed in white on the road map after the position has been corrected, and are subsequently updated as the mobile object travels. It will be displayed.

Such a series of position correction operations are prohibited while the moving object is moving, and must be performed while the moving object is stopped, such as waiting at a traffic light, but the operations may not be completed before the moving object starts running. arise.

In such a case, as shown in FIG. 4(b).

If a moving object is detected while performing a position correction operation in the position correction mode, the current position is forcibly set once at the position in the middle of the operation. Switched to display mode,
As shown in FIG. 4(e), the current position display is restarted from the position in the middle of the correction.

In this case, the words "Position correction mode" will be displayed at the edge of one screen, and the current position mark M1 and traveling direction mark M2 will remain red, indicating that the position is being corrected. (At this time, press 6 on the position correction key.
(The LED remains lit.)

Further, the fact that the position correction is in progress is stored in the internal memory of the display control device 8.

When the stationary state of the moving object is detected during the current position display mode, which was forcibly switched by the detection of the moving state of the moving object, the original position correction mode is automatically returned to, and the position correction mode is automatically changed. This allows the operation to continue.

At that time, the current position display is updated while the position correction is suspended.

It will automatically return to position correction mode.

As described above, according to the present invention, the position correction operation is enabled only when the moving object is stopped, and when the moving object starts running in the middle of one position correction, the position correction mode is forcibly switched to the current position display mode. Even when the moving object is stopped, the previous position correction operation becomes effective, and the position correction operation can be performed efficiently when the moving object is stopped without interrupting the current position display as the moving object moves. It becomes like this.

In addition, in the present invention, even when the moving body is stopped and the destination key is pressed with 3 or the map search key is pressed with 8 to switch to the destination setting mode or map search mode, the destination can be set. If a moving object is detected before the map search is completed or the map search is completed, the mode will be forcibly switched to the current position display mode, but the fact that the operation is in progress will be remembered, and the moving object will be changed to the stopped state after that. When a destination is detected, the previous destination mode or map search mode is automatically returned to, and the destination setting or map search can be continued.

In addition, in the destination setting mode, a cursor is displayed in the center of the screen, and while scrolling the road map by operating the stick ST, when the destination on the map comes to the cursor position, press 4 on the destination set key. The destination is set, a destination mark is displayed at the set position, and a line connecting the current position and the destination is displayed.

Also, in the map search mode, a cursor is displayed in the center of the screen, and for example, by operating the stick ST, the road map can be scrolled in the direction of the line to see the state of the road heading toward the destination.

When a moving object starts running in destination setting mode or map search mode and is forcibly switched to current position display mode, the state of the road map displayed on the screen at that time is memorized, and the state of the moving object after that is stopped. When automatically returning to destination mode or map search mode upon detection of , according to the state of the previously stored road map.

It is also possible to restore the screen to the one displayed immediately before the screen was forcibly switched to the current position display mode.

As mentioned above, the current position display device for a moving object according to the present invention has an operation mode that allows operations such as correcting the current position, setting a destination, and searching for a road map only when the moving object is stopped. When the moving object runs or starts in that operation mode, the moving object is forced to switch to the current position display mode, and the moving object stops when the current position display mode is forcibly switched. It is designed to automatically return to the operation mode when a condition is detected, without causing any hindrance to the original operation of displaying the current position of the moving object when it is moving.
It has the excellent advantage of being able to perform operations such as correcting the current location, setting a destination, and searching for a map with good operability.

FIG.

l...Distance sensor 2...Direction sensor 3...First calculation processing bag [4...Travel trajectory storage device 5...
Map information storage medium 6...Storage medium playback device 7...
・Display device 8...display control device! ! 9...Operating device
10...Second arithmetic processing unit Ml...Current position display mark M2...Travel direction display mark M3...Travel trajectory display mark

Claims (1)

[Claims] 1. While detecting the travel distance and traveling direction of the moving object, the current position on the two-dimensional coordinates, which changes every moment as the moving object moves, is calculated sequentially, and the obtained current position is calculated. A current position display device for a mobile object that displays the current position of a mobile object on a screen on which road map data is read out from a storage medium in advance and a predetermined road map is projected on the basis of the road map data. An operating means that can perform operations such as correcting the current position on the map, setting a destination on the road map, and searching for the road map;
Means for detecting each state of a moving body, such as stop or running, and a mode switch capable of switching from a current position display mode to an operation mode for executing the above operations when a stopped state of a moving body is detected. means for forcibly switching to a current position display mode when a traveling state of a moving object is detected in an operation mode, and a means for forcibly switching to a current position display mode when a moving state of a moving object is detected in the forcedly switched current position display mode. 1. A current position display device for a moving object, characterized in that the current position display device includes means for automatically returning to an operation mode. 2. When the running state of the moving object is detected during the current position correction operation, the current position display is forcibly set to the position in the middle of correction, and the current position display is forcibly switched by the detection of the moving state of the moving object. 2. The current position display device for a moving object according to item 1, characterized in that the current position display is continuously performed from the set position when in the mode.