JPS58223708A - Guiding device of travelling course - Google Patents

Abstract

PURPOSE:To perform practical course guidance with simple constitution by displaying a current position and a current azimuth based upon a destination and confirming the distance to the destination. CONSTITUTION:A sensor 5 inputs the angle of a travelling direction to the north to an X component arithmetic part 7 and a speed sensor 6 inputs a pulse of every unit travelling distance to an Y component arithmetic part 8; and the components of the current position on the X and Y axes are sent to a current position memory 9 successively to store up-to-date current position information. A reference position memory 10 is stored with position information on a destination (reference spot) from a keyboard 12 through a CPU13. The CPU13 displays the current position, azimuth, and distance to the destination on a display 11 on the basis of the data in the memories 9 and 10. Thus, the practical course guidance is carried out with the simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a driving course guiding device, in particular, displaying running information of a moving object such as a car on a display based on outputs from a direction sensor and a speed sensor mounted on the moving object. In the driving course guidance device, a plurality of concentric circles for distance display are displayed on the display, and the current position and traveling direction of the mobile object are displayed on the display with reference to a predetermined point. The present invention relates to a driving course guiding device.

Prior to filing the present application, the applicants of the present application developed a running course guiding device as shown in FIG. The travel course guidance device is placed, for example, in front of the driver's seat, and as shown in FIG.
A direction sensor (not shown) and a speed sensor (not shown) are provided with a CRT display 1 and are separately mounted.
The driving trajectory 2 obtained based on the output from the . The attached map sheet 3 is fixed by a fixing means 4, so that the traveling trajectory 2 is extended along a desired road on the map.

The driving course guidance device described above has one major feature and advantage in that it overlaps the display screen and the map and extends the driving trajectory along the road on the map. This is a promising direction for course guidance devices.

However, in the driving course guidance device described above, the information processing required to display the map on the display and to display the driving trajectory in correspondence with the roads on the map is complex and requires a large amount of information processing. Because there are so many of them, the production costs are soaring and they cannot be obtained at an affordable price. Therefore,
Consumers do not need the above-mentioned high-class equipment as long as it has a substantial course guidance effect, and therefore there is a strong desire for a travel course guidance device that is simpler and more inexpensively available.

The present invention aims to meet the above-mentioned demands of consumers, and by displaying at least the current position and direction based on the destination, and making it possible to easily confirm the distance to the destination, it is possible to substantially It is an object of the present invention to provide a simple and inexpensive traveling course guidance device capable of providing accurate course guidance. This will be explained below with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention;
Figure 2 is an explanatory diagram regarding current position information in the illustrated embodiment, Figure 4 is an explanatory diagram for explaining the display principle in the present invention, and Figure 5 is an explanatory diagram for explaining the display principle in the present invention. An example illustration is shown.

In Fig. 2, numeral 5 is a direction sensor, and 6 is a speed sensor.
1 is a sensor, 7 is an X component calculation unit, 8 is an X component calculation unit, 9 is a current position memory, 10 is a reference position memory, 11 is a display, 12 is a keyboard, 13 is a CPU, and 14 is a memory clear unit. .

The direction sensor 5 detects the traveling direction of the moving body with respect to a predetermined reference direction, for example, the azimuth "north", and outputs angle information of the traveling direction with respect to the azimuth "north JK".

The speed sensor 6 outputs, for example, a clock pulse corresponding to the rotation of the wheel, that is, a clock pulse every time the vehicle travels a predetermined unit distance.

Next, the operations of the X component calculation section 7 and the X component calculation section 8 will be explained with reference to FIG. Reference numeral 15 in the figure is a driving course, which represents the driving route from the starting point ps to the current position Pnl. Moreover, the points P0, PI, Pl, . , ...... corresponds to the clock pulses. Therefore, based on the angle information output from the direction sensor 5, the amount of change X on the X axis of the points P, , P, , P, , . . . with respect to the starting point ps. , rt, :X2, . . . are calculated in the X component calculation unit 7, and the change y on the Y axis. S3'
l , 3'2, . . . are calculated in the X component calculation unit 8. Then, the X-component calculation section 7 and the X-component calculation section 8 output the X-component change and the cumulative value of the X-component change. That is, for example, when the current position Pn is reached, the X component calculation section 7 calculates (xo+x, +...
...+xn) That is, XrL is output, and the X component calculation unit 8
(y0+yI+...+'ln-+), that is, '(n) is output.

In the current position memory 9, the outputs of the X-component calculating section 7 and the X-component calculating section 8 are sequentially updated and stored. Therefore, the latest current position information is stored in the current position memory 9.

The reference position memory 10 is stored from the keyboard 12 to the CPU 13.
The location information of a predetermined reference point inputted via the . For example, if a destination is selected as the reference point, the X component and the X component from the starting point to the destination are determined from, for example, a map and stored in the reference position memory 10 before the start of travel. To explain in detail with reference to Figure 4, when the point ps on the map shown in Figure 4 is the starting point and the point Pe is the destination, the reference position memory 10 stores the The reference position information is the departure point PS
These are the coordinate values of the destination Pe whose origin is (Xe, Ye). Although the coordinate axes X and Y can be set in any direction, in the embodiment shown in FIG. 4, the coordinate axes are set so that the square axis of the Y axis coincides with the azimuth "north."

It is still possible to select the starting point ps as the reference point. In this case, as will be specifically described later with reference to FIG.
”.

The CPU 3 processes keystrokes from the keyboard 12 and causes the display 11 to display the current position and orientation information based on the contents of the current position memory 9 and reference position memory 10.

The display mode on the display 11 will be explained with reference to FIG. 5.

As shown in FIG. 5, the display 11 according to the present invention has an origin 16, a plurality of concentric circles 17 representing distances from the origin 16, and an orientation display 18 representing north, south, east, west, and 11 directions fixedly displayed on the screen. has been done. Furthermore, the respective distances from the origin 16 are displayed on the plurality of concentric circles 17. Furthermore, numerals 19-1 to 19-8 in the figure indicate driving directions, and for example, the direction of the destination based on the current position, that is, 19-1 is "North J, 19-8".
2 may be considered to indicate the direction of "northeast", and 19-8 may indicate the direction of "northwest".

In the present invention, the display of the current position on the display 11 is based on the above-mentioned reference point (the position information of the reference point is stored in the reference position memo! 710K) as the origin 16, and the origin 16 as the reference point. will be displayed. For example, when traveling from the starting point ps to the destination pe as shown in FIG.
SYe)), the current position is displayed with the destination pe set as the origin 16 of the display 11. For example, in FIG. 4 (5), from the starting point ps to the point P
When nK is reached, the current position memory 9 stores the position information (Xn, Yn) of point pn as described above.

Therefore, the CPU 13 reads the contents of the current position memory 9 (X
n, Yn) and the contents of the reference position memory 10 ()(
e, Ye), the point pH (7) location information for the destination pe is based on ()(e −Xn, Ye −
Yn) is calculated and the illustrated arrow p is displayed on the display 11.
It can be displayed as the current position corresponding to the point pn, such as n. Also, at this time, from point pn to destination p
The driving direction display 19-2 indicating the direction to e, ie, "northeast" lights up. In this way, the reference position memory 10
If the location information of the destination is stored in , the current location is displayed while being updated sequentially based on the destination.

Next, as shown in FIG. 4 (03), when the destination is not set (in this case, the contents of the reference position memory 10 are cleared as described above), the contents of the reference position memory 10 are The content can be considered to be position information of the starting point ps /, therefore, the origin 6 of the display 11 indicates the starting point ps /, and the current position after leaving the starting point ps / is based on the origin 16. displayed. For example, the contents of the current position memory 9 when reaching point pn/ are (Xn', Yn'), and CP
The UI 3 displays the contents of the current position memory 9 (xn', yn'
) and the contents (0,0) of the reference position memory 10, the position information of the point pn/ with respect to the origin 16 (indicating the starting point ps/), that is, (o-Xn', o-
yn') is calculated and the display 11 displays the current position while being updated sequentially based on the starting point if the position is upward as shown by the arrow pn/ in FIG. Displaying the current position based on the departure point is convenient when the user travels around arbitrary points in an unfamiliar area and returns to the departure point again.

As explained above, according to the present invention, the current position is displayed based on a desired point (for example, a destination or a departure point), and the distance to the reference point can also be confirmed. Therefore, it is possible to provide an inexpensive travel course guidance device that allows for accurate course guidance.

[Brief explanation of drawings]

Fig. 1 is an external view of a conventional traveling course guidance device, Fig. 2 is a block diagram showing the configuration of an embodiment of the present invention, and Fig. 3 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 4 is an explanatory diagram for explaining the display principle of the present invention. FIG. 5 is an explanatory diagram of an embodiment of the display mode of the present invention. . In the figure, 5 is a direction sensor, 6 is a speed sensor, and 7 is an X
Component calculation unit, 8 is an X component calculation unit, 9 is a current position memory,
10 is a reference position memory, 11 is a display, 12 is a keyboard, 13 is a CPU, 14 is a memory clear unit, 1
7 represents concentric circles, 18 represents a direction display, and 19 represents a running direction display. Patent applicant Alps Electric Co., Ltd.

Claims (1)

[Claims] A driving course guidance device configured to display the current position and running direction of the moving object on a display based on outputs from a direction sensor and a speed sensor mounted on the moving object, the direction sensor and the speed sensor being mounted on the moving object. -Equipped with a current position memory in which current position information calculated based on the output from the sensor is stored and a reference position memory in which position information of a predetermined reference point is stored, the current position memory and the reference position memory are Based on the contents, the current position and traveling direction of the moving object are displayed on the display with respect to the reference point, and a plurality of concentric circles for distance display are displayed on the display. A driving course guidance device characterized by: