JP2891666B2 - Course display guidance device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a course display guidance apparatus, and more particularly to a course display guidance apparatus which is superimposed on a road map based on a detection signal of a sensor mounted on a moving body such as a car. In a course display guidance device that plots and displays a traveling position (hereinafter, also referred to as a traveling locus for simplicity) at which the traveling locus of the moving body can be monitored, position information of a predetermined point on a planned traveling course is provided. A planned course storage device in which planned travel course information including travel direction information at the point is stored, a means for displaying the planned course on a display device is provided, and
The present invention relates to a course display guidance device that displays a traveling direction on a display device and automatically reports, by voice, approach information to the traveling point and traveling direction instruction information at the point. [0002] Prior to the filing of the present application, the present applicant has developed a course display guiding device as shown in FIG. The course display guidance device is arranged, for example, in front of the driver's seat, and as shown in FIG. 1, includes a CRT display 1 as a display device, and separately includes a direction sensor (not shown) and a speed sensor (not shown). ), The travel locus 2 obtained based on the output from the above is configured to be plotted on the display screen. On the other hand, for example, a map sheet 3 drawn on a transparent film is configured to be attachable / removable to the front of the display screen. The attached map sheet 3 is fixed by the map fixing means 4 so that the traveling locus 2 is extended along a desired road on the map. [0003] The course display guidance device has one great feature and advantage in that a display screen and a map are superimposed and a traveling locus is extended along a road on the map. Thus, this can be expected as one direction of the course display guidance device. The device shown in FIG. 1 has a problem in safe driving because it is necessary to visually confirm a traveling locus in comparison with a map. Also, it was not possible to check the planned course. It is an object of the present invention to be able to check a course to be traveled and to indicate a traveling direction by voice. According to the present invention, a road map and a travel locus storage device for storing travel locus information of a moving body based on a detection signal of a sensor mounted on the moving body are displayed. A display device is provided, and a means for displaying a planned course on the display device is provided, and the actual traveling course is checked by traveling while collating the contents of the traveling locus storage device and the contents of the planned course storage device. Do
The driving direction at the planned traveling point is displayed by a display device , and the guidance of the course by performing a voice notification of the approach information to the planned traveling point and the traveling direction instruction information at the relevant point is performed, thereby providing safety. A course display guidance device that makes driving possible is provided. FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is an explanatory diagram for explaining an embodiment of a course guiding operation in the present invention, and FIG. ),
(B) and (C) are explanatory views of another embodiment of the traveling direction display in the embodiment shown in FIG. 3, and FIGS. 5 (A) and (B) are explanatory views of an embodiment of a map projection mechanism in the present invention. FIG.
(A), (B) is an explanatory view for explaining an automatic map update operation in the present invention. The operation of the embodiment shown in FIG. 2 will be described with reference to FIGS. 3 to 6 as needed. In FIG. 2, reference numeral 5 denotes a direction sensor which detects a traveling direction of a vehicle corresponding to a certain reference direction, and 6 denotes a speed sensor which is a clock pulse corresponding to, for example, rotation of a wheel. Is a keyboard which has various input keys to be described later. Other symbols will be described each time as the description proceeds. The direction information (analog signal) from the direction sensor 5 is supplied to the A / D converter 8 for each of the X component and the Y component.
Is converted into a digital signal. Meanwhile, speed
A pulse counter 9 for counting clock pulses from the sensor 6 outputs a sample clock every predetermined number of counts. Then, in the X component calculation unit 10 and the Y component calculation unit 11, each time the sample clock is output from the pulse counter 9, each direction information (digital) of the X and Y components output from the A / D converter 8 is output. Signal) to the accumulated value up to that point, and the declination correction unit 1
Output to 2. The declination correction unit 12 performs correction based on, for example, the declination of the geomagnetism, and stores a declination correction value memory 14 in which declination correction values corresponding to map numbers determined for each region are stored. , The declination correction value corresponding to the area where the vehicle is currently traveling is read, and the declination correction based on the declination correction value is performed. In this way, the signals are output from the X-component calculator 10 and the Y-component calculator 11 in accordance with the sample clock from the pulse counter 9,
The travel locus information to which the declination correction has been applied by 2 is sequentially stored in the travel locus memory 15. The running locus memory 1
5 is read out to be transcribed to the display memory 17 and based on the map scale information set in the scale memory 20 from the keyboard 7 via the encoder 13,
The conversion corresponding to the scale of the map is performed by the memory conversion unit 16 and transferred to the display memory 17. Further, the contents of the display memory 17 are converted by the display driver 18 into display data corresponding to the display screen on a one-to-one basis.
Supplied to As a result, the traveling locus is displayed in a form having a scale corresponding to a road map displayed on a display screen described later. In the present invention, there is provided a scheduled course memory 21 in which information on a scheduled course to be run is stored in advance. The planned course memory 21 corresponds to the traveling locus memory 15, and the planned course information stored in the planned course memory 21 includes position information of a predetermined planned course point on the planned traveling course. And travel direction instruction information at the point, which is input in the form of the amount of movement in the X and Y directions on the road map displayed on the display screen from the keyboard 7 via the encoder 13 before the actual traveling. The movement amount is counted by the planned course input counter 22, and the above-mentioned planned course
The data is stored in the memory 21 in the form of X and Y coordinate values. And
At the time of actual traveling, the comparison processing unit 23 compares the current position information of the display memory 17 with the planned course information of the planned course memory 21 so that the current position of the vehicle is within a predetermined distance range from the planned course point. And the traveling direction determination processing unit 24 determines the traveling direction at the planned course point, for example, right turn, left turn, straight ahead, etc., and the current position of the vehicle is determined in advance from the planned course point. When the vehicle reaches the distance range, the comparison processing unit 23 and the traveling direction determination processing unit 24 output the approach information and the traveling direction instruction information to the planned course point from the speaker 26 via the voice synthesizing unit 25, for example, “soon. This is the scheduled point. Please turn right. "
Hereinafter, a specific description will be given with reference to FIG. FIG. 3 shows a road map of a certain area where the vehicle is currently traveling, which is displayed on a display screen of the course display guidance device according to the present invention by a later-described map projection projector, and the above-mentioned planned course point and the planned course point. This shows a state in which a traveling direction instruction is displayed and a traveling locus is plotted and displayed on the road map. In the drawing, reference numeral 34 denotes a traveling locus, 35 (a cross-shaped black dot) denotes a current position, 3
Numeral 6 denotes a scheduled course point, and numeral 37 denotes a traveling direction instruction. The position information of each of the planned course points 36 and the information on the traveling direction instruction 37 at each of the planned course points 36 are stored in the planned course memory 21 in advance, and the center of the predetermined course point 36 is The radius R of each dotted circle is set in advance in the comparison processing unit 23 as a comparison threshold. Although FIG. 3 shows an embodiment in which the traveling direction instruction 37 indicates the traveling direction with an arrow, FIG.
The traveling direction may be displayed by a triangle or a circle shown in FIGS. Now, an example will be described in which a vehicle equipped with the course display guidance device of the present invention travels on a planned course as indicated by a running locus 34 and approaches a planned course point 36. I do. That is, as described above, a comparison process between the current position information of the display memory 17 and the position information of the planned course point 36 stored in the planned course memory 21 is performed in the comparison processing unit 23, and the current position 35 and the current position 35 are compared. When the distance to the scheduled course point 36 reaches within the range of the comparison threshold value R preset in the comparison processing section 23, the comparison processing section 23 outputs approach information to the scheduled course point 36, The traveling direction determination information is output from the traveling direction determination processing section 24. These pieces of information are converted into voice information in the voice synthesis unit 25, and the speaker 26 announces, for example, "Soon OO location. Please go straight at OO location." Furthermore, when the vehicle travels and approaches the next scheduled course point 36, a similar voice message is issued, for example, "Soon it is XX point. Please turn left at XX point." In this way, since the course guidance is performed by voice, driving safety can be improved as compared with course guidance relying on vision. Next, prior to description of the automatic map exchange function in the present invention, a map projection projector will be described with reference to FIGS. 5 (A) and 5 (B). In the figure, reference numeral 38 denotes a condenser mirror, 39 denotes a light source, 40 denotes a condenser lens,
1 is a microfilm, 42 is a microfilm cartridge, 43 is a magnifying lens, 44 is a reflection mirror, 45
Represents a projection screen. Reference numeral 46 denotes a display element corresponding to the display section 19 shown in FIG. For example, it represents a display element such as a transmissive LCD or LED panel. The microfilm 41 is loaded in a microfilm cartridge 42 so as to be rewindable and rewindable by a motor 32 (not shown) (not shown), as shown in FIG. 5 (B). The road map of the region is recorded in the form divided into each frame. Then, a desired frame of the microfilm 41 is selected, and the projection light from the light source 39 is collected by the condenser mirror 38 and the condenser lens to enlarge and project the road map of the selected frame on the projection screen 45. The light is condensed by 40 and projected on the microfilm 41, and the magnifying lens 4
3 and is projected on a projection screen 45 via a reflection mirror 44. A transmissive flat display element 46 such as a transmissive LCD panel for displaying a traveling locus is disposed between the reflection mirror 44 and the projection screen 45 so as to be in close contact with the projection screen 45.
Is combined with the map pattern of the microfilm 41 and displayed on the projection screen 45. In addition,
The display element 46 can be arranged at an interval on the front surface of the projection screen 45. The display element 46 for displaying the traveling locus is not limited to a display element such as an LCD or an LED, but may be a display medium such as a CRT or a fluorescent display tube. The display unit 19 shown in FIG. Means device. FIGS. 6A and 6B show the display unit 1 as described above.
FIG. 9 shows a state in which a road map and a running locus are displayed. Reference numerals 34 and 35 in the figure correspond to those in FIG. 3, and reference numeral 47 denotes an overlap boundary line set at the peripheral edge of the screen. In FIG. 6A, the running locus 34 is plotted and displayed as the vehicle runs, and the current position 35 is displayed.
Reaches the overlap boundary line 47, the overlap determination unit 27 shown in FIG. 2 sends an overlap signal to the comparison processing unit 28. The comparison processing unit 28
The contents of the map No. memory 29 input from the keyboard 7 via the encoder 13 must be compared with the contents of the map memory 30 storing the entire map array, and then displayed. To select the map No.
The frame feed number of the micro film 41 is calculated, and the calculation result is output to the motor driver 31. Then, the motor driver 31 controls the motor 32 to move the micro film 41 by the number of frame feeds. At this time, the film search sensor 33 counts the number of frame feeds and checks whether a predetermined number of frames have been sent. In this manner, a predetermined number of frames are transmitted, and as a result, a road map of a region continuous with the map shown in FIG. 6A is displayed on the display screen as shown in FIG. 6B. Will be. The overlap signal from the overlap determination section 27 is also sent to the memory conversion section 16. By receiving the overlap signal, the memory conversion unit 16 translates the current position 35 together with the traveling locus 34 from the point shown in FIG. 6A to the point shown in FIG. As a result, the current position 35 shown in FIG.
(B) Needless to say, the illustrated current position 35 is the same point on the map. According to the present invention, the approach information to a predetermined point on the scheduled traveling course and the traveling direction instruction information at the point are notified by voice each time necessary, so that accurate information is provided. Course guidance is performed and it can contribute to safe driving. Further, the display device displays the traveling direction at a predetermined point on the planned traveling course, so that the relative relationship between the traveling course and the traveling position of the moving object can be easily recognized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of a conventional course display guidance device in a conventional example. FIG. 2 is a block diagram showing a configuration of an embodiment of the present invention. FIG. 3 is an explanatory diagram illustrating an embodiment of a course guidance operation according to the present invention. FIG. 4 is an explanatory view of another embodiment of the display of the traveling direction in the embodiment shown in FIG. 3; FIG. 5 is an explanatory diagram relating to an embodiment of a map projection mechanism according to the present invention. FIG. 6 is an explanatory diagram for explaining an automatic map updating operation according to the present invention. [Description of Signs] 5 Direction sensor 6 Speed sensor 7 Keyboard 8 A / D converter 9 Pulse counter 10 X component calculation unit 11 Y component calculation unit 12 Declination correction unit 13 Encoder 14 Declination correction value memory 15 Running Locus memory 16 memory conversion unit 17 display memory 18 display driver 19 display unit 20 scale memory 21 scheduled course memory 22 scheduled course input counter 23 comparison processing unit 24 running direction determination processing unit 25 voice synthesis unit 26 speaker 27 overlap determination unit 28 Comparison processing unit 29 Map No. memory 30 Map memory 31 Motor driver 32 Motor 33 Film search sensor

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Claims (1)

(57) [Claims] A traveling locus storage device that stores traveling locus information of the moving body based on a detection signal of a sensor mounted on the moving body and a display device that displays a road map are provided, and the contents of the traveling locus storage device are read out. A course display guidance device that displays a traveling position of the moving body together with a road map on the display device, the two-dimensional position information indicating a predetermined point on a planned traveling course and traveling direction information at the point. A planned course storage device in which planned traveling course information is stored, a planned course in which planned traveling course information including two-dimensional position information indicating the predetermined point and traveling direction information at the point is input to the planned course storing device. Information setting means for displaying a scheduled travel course on the display device based on the scheduled travel course information stored in the scheduled course storage device; Control means, a comparison processing unit for performing a comparison process between a position based on the contents of the travel locus storage device and a position based on the two-dimensional position information, which is one of the contents of the planned course storage device, and Based on the comparison result, it is determined that the moving body is located within a predetermined range at a predetermined point on the scheduled traveling course, and a determination is made in a predetermined traveling direction at the point. A driving direction determination unit for performing, the display device is configured to visually display a display in the predetermined driving direction at a predetermined point on a scheduled course, and Based on the determination result in the traveling direction determination unit and the comparison result in the comparison processing unit, the predetermined value at a predetermined point on the scheduled traveling course A travel direction indication information to the predetermined traveling direction of the approach information and the point indicating that it is in the range,
A course display guidance device, comprising: a voice information generating unit that reports in a voice language using information prepared in advance.