JPS58199380A - Course guide apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a course guiding device 0% based on detection signals of a directional sensor and a speed sensor mounted on a moving body such as a passenger car, and superimposes the road map on the road map. A course guidance device that plots and displays a traveling trajectory is provided with a planned course storage device that stores scheduled traveling course information. The present invention relates to a course guidance device in which, when the peripheral edge of the display screen is reached, a road map of an area adjacent to the peripheral edge is automatically selected and displayed on the display.

The applicants of this application developed a course guiding device as shown in FIG. 1 prior to filing the application of this application. The course guidance device has power distributed to the front of the driver's seat, for example, and is equipped with a CRT display 1 as shown in FIG. The driving trajectory 2 obtained based on the output of The mounted map sheet 3 is fixed by the means 4, and the above traveling trajectory 2 is
is extended along the desired road on the map.

The above-mentioned course guidance device has one major feature and advantage in that it superimposes the display screen and the map and extends the travel trajectory along the road on the map. This is a promising direction for the device. but.

In the device shown in FIG. 1, for example, the travel trajectory 2 advances to the peripheral edge of the map on the display screen.

When it becomes necessary to replace the map sheet 3, not only does it have to be done manually, but it also takes a lot of time and effort to select a desired map sheet from among a large number of map sheets. Furthermore, since it is necessary to visually check the traces of the running axis, there remains a problem in terms of safe driving.

The present invention aims to solve the above-mentioned problems, and the present invention is a traveling trajectory storage device that stores information on the traveling trajectory of the moving object based on the outputs of a direction sensor and a speed sensor mounted on the moving object. and a planned course storage device storing scheduled driving course information, and the actual driving course is checked by driving while checking the contents of the traveling locus storage device and the planned course storage device.

For example, it contributes to safe driving by providing course guidance that automatically notifies you when you are approaching a destination, and also when the driving trajectory reaches the peripheral edge of the map on the display screen. It is an object of the present invention to provide a course guidance device in which a road map of an area adjacent to a peripheral edge is automatically selected and displayed on the display.

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;
The figures are an explanatory diagram for explaining one embodiment of the course guidance operation in the present invention, FIG.
a3) is an explanatory diagram for explaining the automatic map updating operation in the present invention, and FIG. 6 shows an external view of one embodiment of the course guidance device of the present invention.

The operation of the embodiment shown in FIG. 2 will be described with reference to FIGS. 3 to 6 as necessary.

In FIG. 2, reference numeral 5 in FIG. 9 is a direction sensor that detects the running direction of the vehicle in accordance with a reference direction;
7 is a speed sensor that outputs clock pulses corresponding to the rotation of the wheels, and 7 is a keyboard provided with various input keys to be described later. The other symbols will be explained to the guest of honor as the explanation progresses.

The direction information (analog signal) from the direction sensor 5 is converted into a digital signal by the A/D converter 8 for each X component and Y component. On the other hand, a pulse counter 9 counts clock pulses from the speed sensor 6.
outputs a sample clock to a predetermined count number. and.

In the X component calculation section 10 and the Y component calculation section 11, c.
For each sample-clock output from the pulse counter 9, the X, Y output from the A/D' converter 8
Each component direction information (digital signal) is added to the cumulative value up to that point and output to the declination correction section 12. The declination correction unit 12 performs correction based on, for example, the declination of the earth's magnetic field, and has a declination correction value store that stores declination correction values corresponding to map graves determined for each earth moth. The declination correction value corresponding to the area where the vehicle is currently traveling is read out from step 14.
#Perform declination correction based on the declination correction value. In this way, the X component meter thin part 10 and the Y component calculation part 11 correspond to the sample clock from the pulse e counter 9.
The travel trajectory tR information outputted from the device and subjected to declination correction by the declination correction unit 12 is sequentially stored in the travel trajectory memory 15.
is stored in The contents of the travel trajectory memo IJ l 5 are 1
The map scale information V is read out to be transcribed into the display memory 17 and sent from the keyboard 'l via the encoder 13 to the map scale memo set in 20, and the map scale information V is set in memory H16 to correspond to the scale of the map. Conversion is performed and transferred to display memory 17. Furthermore.

The contents of the display memory 17 are converted by the 1-display driver 18 into display data corresponding to the display screen on a 1:1 basis, and are supplied to the display element 19. the result.

The driving trajectory is displayed with a scale corresponding to the road map displayed on the display screen.

In the present invention, a scheduled course memory 21 is provided in which information regarding the scheduled course to be traveled is stored in advance. The planned course memory 21 corresponds to the traveling trajectory memory 15, and the planned course information stored in the planned course memory 21 is displayed on the display screen from the key Φ board via the encoder 13 before the actual driving. The amount of movement in the X and Y directions on the displayed road map is input, the planned course input counter 22 counts l* the amount of movement, and the planned course memory 21 stores X and Y.
It is stored in the form of coordinate values. and.

During actual driving, the comparison processing section 23 performs a comparison process between the current position information in the 1st page of the 2nd display memory and the planned course information in the Joki schedule/set course/memo IJ 21.

It is determined whether the current position of the vehicle has reached within a predetermined distance range from the planned course point, and when the current position of the vehicle has reached within the predetermined distance range from the planned course point, the above comparison process is performed. The section 23 includes a speech synthesis section 24
The driver is notified of this via the speaker 25. below.

This will be explained in detail with reference to Figure @3.

FIG. 3 shows the display screen of the course guidance device of the present invention.
The road map of the area where the driver is currently traveling is displayed by the map projection glosiector that reaches the vehicle, and the travel trajectory 33 is plotted on the road map. (This will be described in detail later with reference to FIG. 4).

Note that the cross-shaped black dot 34 is the current position, and the white dots 35 to 37 are
Planned course point 2 The circular dotted lines 38 to 40 represent a predetermined distance range from the planned course point.

The coordinate information of the planned course points 35 to 3 is stored in the planned course memory 21 in advance, and the distance from the planned course point determined in advance, that is, the circular dotted line 38
The distance between the cows numbered 0 to 0 is set in advance as a comparison threshold R in the comparison processing section 23.

Now, a case will be described using as an example a case in which nine machines equipped with the course guidance device of the present invention travel nine scheduled courses as shown in the traveling trajectory 33 and approach a planned course point 35. That is, as described above, the comparison processing section 23 performs a comparison process between the current position information in the second display memory 1 and the coordinate information of the planned course point 35 stored in the planned course memory 21. When the distance from the planned course point 35 reaches within the range of the comparison threshold value R preset in the comparison processing section 23, the speaker 25 outputs, for example, "Point 35" via the voice synthesis section 24 as described above. The driver is notified by audible sound, "You are approaching." Furthermore, when the vehicle progresses and approaches the scheduled course point 36 or 37, a similar notification is given. Note that as one aspect of the course guidance of the present invention, points that serve as landmarks, such as road intersections, are set as planned course points.

We have explained the mode of notifying that the planned course point has been approached.2 For example, the above planned course points are set at intervals corresponding to the driving trajectory plot along the planned driving course, and the actual driving path is different from the planned course. It is also possible to issue a voice notification if the user deviates from a predetermined distance. In this way, since the course guidance is performed by voice, it can contribute to safety coordination compared to the conventional course guidance by sight. In addition, since it is no longer necessary to display the driving trajectory 7 on the screen, one screen can be suppressed, or it is possible to display on-screen information such as the speed meter, tachometer, fuel meter, etc. is also possible.

Next, in explaining the automatic map exchange function of the present invention, first, the map projection projector is shown in FIG.
(This will be explained with reference to the bottle. In the figure, reference numeral 41 is a condenser mirror, 42 is a light source, 43 is a condenser lens, 44 is a microfilm, 45Fi microfilm cartridge,
46 is a magnifying lens.

47 represents a reflection mirror, and 48 represents a projection screen. Note that 19 corresponds to the display element shown in FIG.
This is a transparent flat display in which the travel trajectory is displayed as a plot.

The microfilm 44 is connected to the motor 32 (not shown).
(as shown in Figures 2 and 6), the microfilm φ cartridge 45 is loaded so that it can be wound and rewound freely, and the road map of a continuous area is divided into frames as shown in Figure 4@. It is recorded in the form of friends.

Then, a desired frame of the microfilm 44 is selected.

In order to enlarge and project the road map of the selected frame on the projection screen 4, the projection light from the light source 42 is focused by a condensing mirror 41 and a condensing lens 43 and projected onto a microfilm 44. The image is magnified by a magnifying lens 46 and projected onto a projection screen 4 through two reflecting mirrors 4.

A transmissive flat display element 19 such as a transmissive LCD panel for displaying the travel trajectory is disposed between the two reflection mirrors 4 and the projection screen 48 in close contact with the projection screen 48, and the display element The travel trajectory 190 is combined with the map pattern on the microfilm 44 and displayed on the projection screen 48. Note that it is also possible to arrange the display elements 19Fi in front of the projection screen 48 at intervals.

As explained above, FIG. 5 shows a state in which a road map and a travel trajectory are displayed on the display screen of the course guidance device of the present invention. Reference numerals 33 and 34 in the figure correspond to those in FIG. 3, and 49 represents an overlapping boundary line set at the peripheral edge of the screen.

In FIG. 5, the traveling trajectory 33 is plotted and displayed as the vehicle width travels, and when the current position 34 reaches the overlap boundary line 49, the overlap determination section shown in FIG. 26 is.

The overlap signal is sent to the comparison processing section 28.

The comparison processing section 2nd is the encoder 13 from the keyboard board.
Comparison processing is performed between the contents of the required map block 27 input via □ and the contents of the map memory 29 in which the entire map arrangement is stored, and the map to be displayed next is selected. The number of frame feeds of the micro film 44 is calculated, and the calculated result is output to the motor driver 31. Then, the motor driver 31 drives the motor 32
is controlled so that the micro film 44 is moved by the above-mentioned number of frames. At this time, the film search sensor 30 counts the number of frames sent and checks whether a predetermined number of frames have been sent. In this way, a predetermined number of frames are sent.

As a result, the road map of the area that is continuous with the 51st prisoner's illustrated map will be displayed on the 9th prisoner's display screen, as shown in Fig. 5.

Further, the overlap signal from the overlap determining section 26 is also sent to the memory converting section 16. By receiving the overlap signal, the memory conversion unit 16 moves the current position 34 in parallel with the travel trajectory 33 from the 51st prisoner indicated point to tl, the 5th prisoner indicated point. As a result, the current position 34 shown in FIG. 5(4) and the current position 34 shown in FIG.

Needless to say, they are at the same point on the map.

Note that the contents of the map layer memory 2 are stored in the comparison processing section 28.
Since the map is rewritten to a new map by the map memory 2? always stores a new map, that is, the map of the map currently projected on the display screen. In this way, the map display is automatically switched in accordance with the driving of the vehicle.

The correct driving trajectory will always be displayed.

The nine course guidance devices of the present invention have been described above, and FIG. 6 shows an overall external view thereof. In other words, 7 in Figure 2
%L Equipped with the functions explained with reference to Figure 6,
It is relatively small and lightweight, and can be installed on the instrument panel without any reinforcement. Note that the symbols in FIG. 1 correspond to those in FIGS. 2 and 4.

As explained above, according to the present invention, the planned driving course is inputted in advance, and the course guidance can be communicated to the driver by means of information transmission such as voice, which is more effective than the course guidance that relies on visual perception. Driving safety can be improved. Furthermore, since it is not necessary to display the driving trajectory on the screen, it is possible to suppress one screen, and it is also possible for Maho to display instrument panel information such as the speedometer, tachometer, and fuel meter. Furthermore, since the map display can be automatically updated, the user is freed from the complicated work of exchanging maps and aligning the current position at the time of exchanging maps. Once again in history. Thanks to its relatively small size, it can also be installed on the instrument panel without any reinforcement.

[Brief explanation of the drawing]

Fig. 1 is an overall external view of an example of a conventional course guidance device, Fig. 2 is a block diagram showing the configuration of an embodiment of the present invention, and Fig. 3 is an illustration of an embodiment of the course guidance operation of the present invention. (Isao is an explanatory diagram of an embodiment of the map submission mechanism in the present invention, Figure 5.
Figure (4) shows an explanatory diagram for explaining the automatic map updating operation in the present invention, and an overall external view of an embodiment of the course guidance device of the present invention by the company No. 6. In the figure, 5 is a direction sensor; 6 is the speed sensor. 7 is the current board, 8 is the A/D converter, and 9 is) ξ.
10i is an X-component calculation section, 11 is a Y-component calculation section, 12 is an argument correction section, 13 is an encoder, 14 is an argument correction value memory, 15 is a travel locus memory, 16 is a memory conversion section, 17 is display memory. 18 is a display driver, 19 is a display element, 20 is a scale memory, 21 is a scheduled course memory, 22 is a preparatory course input counter, 23 and 28 are comparison processing units, 24 is an audio synthesis unit, and 25 is a screen display device. 26' is an over-ramp determination section, and 27 is a map memory. 29 is a map camera, 3Q is a film search sensor. 31 is a motor driver, 32 is a motor, 33 is a running trajectory, 34 is a current position, 35 to 37i are planned course points, and 38 to 40 are a planned course range. 41 is a condensing mirror, 42 is a light source, 43 is a condensing lens, 4
4 is a microfilm, 45Fi microfilm cartridge, 46 is a magnifying lens, 4th is a reflective mirror, 4
8 is the submission screen, 49 Kyo / (represents the lap boundary line. Patent applicant: Alps Electric Co., Ltd. Patent attorney Mori 1) Den (3 others) Shimo
1 (2) Sairiyama 3” 51 3Z
3m Continuation of page 1/17z Inventor: Tsushima Noboru, 72, Alps Electric Co., Ltd., 1-7 Yukitani Inuzuka-cho, Ota-ku, Tokyo Inventor: Hirofumi Iguchi Alps, 1-7 Yukitani Inuzuka-cho, Ota-ku, Tokyo Inside Denki Co., Ltd., 7 years old Inventor: Takashi Hirochika, 1-7 Yukitani Inuzuka-cho, Ota-ku, Tokyo, Alps Electric Co., Ltd.

Claims (1)

[Claims] The traveling trajectory storage device includes a traveling trajectory storage device that stores traveling trajectory information of a moving object based on detection signals from a direction sensor and a speed sensor mounted on the moving object, and a display that displays a road map. In the course guidance device which displays the traveling trajectory of the mobile object by reading out the contents of the road map on the display and superimposing it on the road map on the display, a scheduled course storage device in which scheduled traveling course information is stored; A planned course information input means for inputting planned course information, a comparison processing section for comparing the contents of the travel trajectory storage device with the contents of the planned course storage device, and a voice outputting course guidance information based on the comparison result in the comparison processing section. map selection means for selecting a predetermined road map to be displayed on the display from among a plurality of road maps; an overlap φ lap determination unit that determines that the overlap has been reached and outputs an overlap signal, and a predetermined road map that automatically selects a predetermined road map based on the overlap signal from the nuclear overlap determination unit. A course guidance device comprising an automatic map update control section that controls a map selection means.