JPH04152383A - Route guidance device for vehicle - Google Patents

Abstract

PURPOSE:To eliminate the timewise loss of a driver by calculating a progress state of an operation in a guidance route operation and displaying a result of operation. CONSTITUTION:A driver inputs a departure intersection and a target intersection by operating a keyboard 16. Subsequently, two intersection information is read out of a CD-ROM 19, and the number of all intersections that are read out is stored. Next, by using a well-known guidance route search technique, an operation for selecting an optimal guidance route is executed, and when an output processing of the guidance route is executed, principal place names of a road in the periphery of a departure place and the guidance route, etc., a distance from the start of running from the departure place to the next intersection, a shape of the intersection and the advance direction in the intersection are displayed on a CRT 20. Also, the guidance route to the target intersection is calculated.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a route guidance device for a vehicle that displays a guidance route from a departure point to a destination.

Conventional technology> Conventional technology [as a dual-purpose route guidance device, for example,
The one described in Japanese Patent No. 8-52516 is known.

This system sets a guidance route from the departure point to the destination in advance, calculates the current location moment by moment as the vehicle travels, and displays the set guidance route and the calculated current location together with map data. This is how it was done.

On the other hand, various devices have been proposed for calculating a guidance route from a departure point to a destination.

<Problem to be solved by the invention> However, such a conventional light road guidance system for vehicles! In this case, it is not known how long it will take to calculate the guidance route, so the driver is unable to attend to other tasks while the calculation is being performed, resulting in a loss of time.

In order to solve the above-mentioned problems, the present invention provides a route guidance device for a vehicle in which the display during guidance route calculation is made appropriate to eliminate time loss for the driver.

<Means/effects for solving MIN> For this reason, the present invention provides a route guidance device for a vehicle that displays a predetermined guidance route as shown in No. 17! , an input means for inputting a departure point and a destination, a guidance route calculation means for calculating a guidance route from the departure point to the destination, and a progress calculation means for calculating the progress of the calculation in the guidance route calculation means. The progress status of the guide route calculation is displayed by a configuration including a means and a display means for displaying the calculation result calculated by the progress calculation means.

<Example> Hereinafter, an example of the present invention will be described in detail using the drawings.

FIG. 2 is a diagram showing the hardware of the Kimoto dual-use route guidance device.

First, in order to calculate the current position 1 of the vehicle, the direction sensor (
12) and distance sensor (13).

The output of this direction sensor (12) is amplified by an amplifier (14) and converted to a digital value by an A/D converter (15), and then sent to the T10 controller (3) and the system bus (
2) is input to the CPU (1).

On the other hand, the output of the distance sensor (13) is sent to the CPU (
1,).

And this CPU (1) uses this direction sensor (12)
The current position 1 of the vehicle is calculated from the output of the distance sensor (13) and the output of the distance sensor (13).

In addition, GPS reception is used to detect the current location! 1 (22) may be used; in this case, the output of the GPS receiver (22) is input to the CP (1) via the extension l10 (21) and the system hash (2).

Next, map data will be explained. Map data is on CD
- The map data is stored in the CD-ROM (19), and the CPU (1) reads the map data stored in the CD-ROM (19) via the system bus (2) and the 5csr controller (5).

Here, an example of the data structure of the map data stored in the CD-ROM (19) will be explained with reference to FIG.

As shown in the upper left of FIG. 3, a map (for example, a 1/50,000 scale map) is divided into nine blocks, and a flock number is assigned to each block.

Now, if we look further at the data for block number 1, we can see that there are 16 intersections in block number 1. The following data is stored for each of these intersections.

In other words, the ``x coordinate'' of the intersection, the ``name of the intersection'', the ``intersection number'' for the adjacent intersection connected to this intersection, the ``road number'' and ``direction'' of the intersection ξ next to this intersection. ” and “distance” are memorized. Figure 3 shows that there are four neighboring intersections connected to this intersection.

Returning to FIG. 2 and continuing the following explanation, the current position, map data, etc. are displayed on the CRT (20) via the graphic controller (6).

Additionally, a speaker (17) is provided via a T10 controller (4) and a sound generator (18) in order to notify various information (for example, the direction of travel at the next intersection) by sound.

Further departure crossing J! A keyboard (16) is also provided via the T10 controller (4) for inputting i (starting point) and destination intersection (destination).

In addition, the system hash (2) is equipped with V-RAM (7D-RA
This R
Various programs (current location calculation, programs shown below, etc.) are stored in the OM (8).

Next, FIGS. 4I21 to 8 are diagrams showing the software (program) of the single-tree dual-use route guidance device.

FIG. 4 is a flowchart of the part for calculating the guidance route, which will be explained together with the hardware shown in FIG. 2.

The driver operates the keyboard (16) to input the starting intersection and destination intersection (step 100). Next, the intersection information including the entered starting intersection and destination intersection is recorded on the CD-R.
OM (19). At this time, in order to calculate the progress status described later, the number of read intersections is memorized (step 120). Next, the number of intersections read out is stored in order to calculate the progress status described later (step 120). Calculate the shortest distance route to the intersection) to select the optimal guidance route, but at this time, the number of intersections processed is memorized from time to time in order to calculate the progress status described later. (Step 130) Next, in Step 140, it is determined whether or not the selection of the guide route has been completed. If it has been completed, the process proceeds to Step 180 and output processing of the guide route is performed.

When the output processing of this guidance route is done, the CRT (20)
Displays such as those shown in FIGS. 9 and 10 are displayed. In other words, to explain Figure 9, the roads around the starting point (solid line)
The guide route (dashed line) and major place names are displayed.

Next, to explain No. 10 [J], the distance from the starting point to the next intersection, the shape of the intersection, and the direction of travel at the intersection are displayed.

Now, returning to FIG. 4, the next step 185 will be explained. It is determined whether the calculation of the guidance route to the destination intersection has been completed, and if it has been completed, the result is "rEND".

Next, the features of the embodiment will be explained below.

That is, step 150, step 160 in FIG.
In step 170, the progress status of the guidance route calculation is calculated and the calculation results are displayed.

The specific computation of the progress status will be described in detail later, but the display of the computation results will first be explained using FIGS. 11, 12, and 13.

Figure 11 shows the starting intersection, the destination intersection, and the road network between them, and also displays the area where the calculation of the guidance route has been completed (calculated area). Of course, when resolving the area, only the outline of the area may be displayed, or the brightness within the area may be increased, the color may be changed, or the thickness of the line may be changed.

In the example shown in FIG. 12, the starting intersection, the destination intersection, and the road network between them are displayed, and the portions for which the calculation of the guidance route has been completed (calculated roads) are also displayed. In this 12th section, only the road portion corresponding to the portion where the calculation of the guide route has been completed is displayed by changing the color, the thickness of the brightness line, etc.

It goes without saying that the progress status may be displayed as a percentage as shown in FIG.

Next, regarding the progress calculation, step 150 in FIG.
．． The explanation will be based on steps 160 and 170.

In step 150, it is determined whether it is time to display the progress of the guidance route calculation. This is determined at certain intervals (for example, every second), the number of calculations, etc.

Note that after the calculation of the guide route is completed, the determination time is changed to, for example, infinity. Or change it to any value using the keyboard.

When it is time to display, the progress of the guidance route calculation is calculated in step 160, and the calculation results are displayed as shown in FIGS. 11 to 13 (step 170).Next, regarding the calculation method in step 160,
Three examples will be explained using FIGS. 6 to 8.

■ First, FIG. 6 will be explained. Check whether the initial settings for calculating the progress of the guidance route calculation have been completed in step 200, and if not, input the number of all intersections stored in step 120 of the fourth [ ]. .

Next, input the number of calculated intersections (step 220).
, this is the value stored in step 130 of FIG. 4 above.

Then, the degree of progress of the calculation of the guide route is calculated, and in this embodiment, the coefficient is calculated as follows.

Namely.

Coefficient = (calculated intersection variance (total number of intersections)) x 100 is calculated and displayed as shown in Figure 13.

■ Next, FIG. 7 will be explained. In step 300, it is confirmed whether the initial settings for calculating the progress of the guidance route calculation have been completed, and if not, the
The starting intersection, 1, and destination intersection, 1 position data input in step 100110 of FIG. 4 are input.

Next, when selecting a guidance route, the first place data of the calculated intersection is input (step 320), which of course is the first place data of the newest intersection among the already calculated intersections. Note that this is the value stored in step 130 of FIG. 4 above.

Then, the degree of progress in selecting the guide route is calculated, and in the embodiment, it is calculated as a coefficient as follows.

That is, the coefficient 2 (distance from the departure intersection to the calculated intersection - distance from the departure intersection to the destination intersection) X100 is calculated and displayed as shown in FIG.

■ Next, FIG. 8 will be explained. It is checked in step 400 whether the initial settings for calculating the progress of the guidance route calculation have been completed, and if the initial settings have not been completed, the position data of the departure intersection input in step 100 of the 4121st step is input. .

Next, the position data of the X intersections are input (step 420). Of course, of the intersections that have been calculated, this is the digit 1 data of the intersection that is the newest (that is, farthest from the starting intersection). Note that this is stored as step 130 in FIG. 4 above.

Then, the degree of progress of the calculation of the guide route is calculated, and in the embodiment, the coefficient is calculated as follows.

In other words, the distance from the coefficient = departure intersection to the calculation information intersection is calculated, and a circle (area) is displayed with the departure intersection as the center and the coefficient as the radius, as shown in Figures 11 and 12. .

Furthermore, in this embodiment, the guidance route can be calculated and the destination intersection can be changed.

For example, referring to FIG. 11, if you enter the departure intersection, the destination intersection, and the direction of the destination intersection and calculate the guide route, the calculated area will be displayed. Since the driver can see the progress status, he can use the time during calculation to carry out initial inspections, etc.

On the other hand, when the driver needs to change the destination,
By looking at this display, you can determine whether you can change your destination and depart immediately, or whether it will take time to perform calculations even if you change it.

In other words, it can be determined that if the driver is within the calculation area, he can immediately depart by changing the destination, and if the destination is outside the calculation area, the calculation will still take time.

This will be explained using the flowchart shown in FIG.

For example, when the interrupt key provided on the keyboard (16) in FIG. 2 is operated, the flowchart in FIG. 5 operates.

Then, in order to change the destination (or add the starting point), input the change of the destination intersection using the keyboard 6) (step 190), and then the intersection 11 [2I, corrected as shown in Fig. 12] is displayed (step 19).
1) Next, step 192) determines whether the changed intersection is an intersection that has already been calculated. If it has been calculated, the guidance route can be immediately determined from the calculated data, so proceed to step 180 in Figure 4. Proceed and the guide route will be displayed.

If the calculation has not been completed, the process of changing the target intersection (correcting the target intersection data in step 110 of FIG. 4) is performed, and the process returns to the flowchart of FIG. 4 to restart the calculation.

As described above, in the vehicle guidance system according to the present embodiment, since the progress of the guidance and circuit calculations is displayed, the driver can effectively utilize the time during the calculations according to the progress. Furthermore, when attempting to change the destination intersection during calculation, by checking the progress display, it is possible to know whether the vehicle will depart immediately after changing the destination intersection or whether the calculation time is required.

<Effects of the Invention> As described above, the vehicle route guidance device according to the present invention eliminates the driver's time loss by calculating the progress status of the calculation in the guidance route calculation and displaying the calculation result. be able to.

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to the claims of the present invention, Figs. 2 to 13 show an embodiment of the invention, 2nd ciff is a configuration diagram of the heart fair of the vehicle route guidance device, and Fig. 3 is a diagram of map data. 4 to 8 are flowcharts of the vehicle route guidance device, and FIGS. 9 to 13 are display examples. 1...CPIJ 2...System lot 12...Direction sensor 13...Distance sensor 16...Keyboard 19...CD-ROM S receiver drawing engraving diagram Condolence diagram No. 5 Figure '1-ζ1 Diagram diagram Figure 12 Procedural amendment (method) % formula % ■, Indication of incident 1990 Patent Application No. 277269 2゜ Name of invention Vehicle route Guidance device 3, address of the person making the amendment (residence)

Claims (1)

[Scope of Claims] A route guidance device for a vehicle that displays a predetermined guidance route, comprising: input means for inputting a departure point and a destination; and guidance route calculation for calculating a guidance route from the departure point to the destination. A route guidance for a vehicle, comprising: a means for calculating the progress of the calculation in the guidance route calculating means; and a display means for displaying the calculation result calculated by the progress calculating means. Device.