JPS592200A - Running 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 driving course guiding device, in particular, a traveling course guide device, for example, a moving object such as a car, based on current position information calculated based on output signals from a direction sensor and a distance sensor mounted on the moving object. In a driving course guidance device that guides a course, by providing a planned course memory that stores position information of a predetermined point in the scheduled driving course and driving direction instruction information at the point, the current position information can be stored. The present invention relates to a driving course guidance device that displays the driving direction at the point corresponding to the above point.

Prior to filing the present application, the applicants of the present application had developed a driving course guiding device as shown in FIG.
A direction sensor (not shown) and a speed sensor (not shown) are installed separately in addition to the B and T displays.
It is configured to plot a travel trajectory 2 obtained based on the output from the display screen on the display screen, while a map sheet 3 drawn on, for example, a transparent film is configured to be attachable to and detachable from the front of the display screen, The attached map sheet 3 is fixed by a map 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. Although this is a promising direction for a course guidance device, it also has the following problems. That is, (1) A map attached to the display screen exists in the form of a map sheet, and is configured to be manually attached and removed. For this reason, if, for example, while driving with one map sheet 3 attached, the driving trajectory progresses to the edge of the map and it becomes necessary to replace the map with a new one, it is necessary to manually replace the map. In addition, when performing this replacement, it is necessary to select a new map sheet 1 to be replaced next from a large number of map sheets one by one, which is relatively troublesome.

(11) Since the route must be determined by visually checking the map and travel trajectory, there is a problem in terms of safe driving.

(Ill) Due to its large volume and weight, it is not only unsuitable for small cars, but also requires certain parts to be installed. (lv) Because it uses a map sheet prepared in advance,
Lack of flexibility regarding map display scale.

The present invention aims to solve the above-mentioned problems, and the present invention provides a traveling course guidance device equipped with a direction sensor for detecting the traveling direction of a moving object and a distance sensor for detecting the traveling distance. In a driving course guidance device that guides a driving course based on current position information of the moving body calculated based on detection signals from a direction sensor and a distance sensor, It is provided with a direction indication display section for instructing the traveling direction of the moving object, and also provided with a planned course memory that stores in advance the position information of the above-mentioned points and the traveling direction instruction information at the points, which are stored in the planned course memory. The vehicle is characterized in that it is configured to compare the position information of the point with the current position information and display the traveling direction at the point on the direction indication display section. This will be explained below with reference to the drawings.

FIG. 2 is a perspective view showing the configuration of an embodiment of the present invention, and FIG. 3 is a block diagram of the embodiment shown in FIG.

The running course guiding device of the present invention is comprised of a direction sensor 5, a distance sensor 6, a digitizer 7, a control device 8, and a display device 9, as shown in FIG. The display device 9 provides a direction indication display that indicates the direction of travel, that is, left turn, right turn, and straight forward direction, at predetermined points on the travel course, such as road intersections, railway crossings, bridges, and other points that serve as travel landmarks. Part 10,
For example, a speaker 11 for audio guidance regarding the direction of travel at the point, such as approaching a destination, etc., and a direction display section 12 for displaying the direction of travel of the mobile object. The vehicle also has a trip display section 13 that displays the distance traveled.

Further, the road map 14 is used to input planned course information, which will be described later.

The operation of the embodiment shown in FIG. 2 will be described in detail below with reference to FIG. Reference numerals 5 to 7 and 10 in FIG.
Or 13tI'! , corresponds to Figure 2, and 15 is X
Counter, 16 is the X counter, 17 is the scale input key-11
8 is a scale memory, 19 is a planned course calculating section, 20 is a direction instruction input key, 121 is a planned course memory, 22 is an A/
D converter, 23 and 33 are counters, 24 is a current position calculation unit, 25 is a current position memory, 26 is a distance memory, 27 is a comparison unit, 28 is a voice memory, 29 is a voice synthesis unit, 30 is an amplifier, 31 is a direction A reference memory 32 represents an azimuth calculation section.

In the present invention, before the start of travel, predetermined points on the planned travel course, such as road intersections, railroad crossings,
Select a point that will be a landmark when driving on a bridge, etc., and store the position information of the point and the driving direction instruction information at the point, that is, the driving direction instruction information of right turn, left turn, or straight ahead, in the planned course memory 21 to be described later. . That is, before the start of travel, the digitizer 7 is used to trace the planned travel course on the road map 14 of the planned travel area, as shown in FIG. 2, for example. The trace causes the digitizer 7 to output pulse signals corresponding to the amount of movement in the X and Y directions. Then, the pulse signals in the X direction and the Y direction are counted by the X counter 15 and the X counter 16, respectively, and the position information of the planned course corresponding to the count chain portion or the above-mentioned trace is sent to the planned course calculating section 19. On the other hand, the scale data of the road map 14 used for tracing the planned travel course by the digitizer 7 is inputted by the scale input key 17, and the scale data is stored in the scale memory 18. Therefore, the planned course calculation section 19 converts the positional information of the planned course that is sequentially outputted from the X counter 15 and the X counter 16 in response to the tracing of the planned course, based on the contents of the scale memory 18. It is done. In this way, the scheduled course calculation section 1
The calculation result at step 9, that is, the positional information of the planned course corresponding to the trace of the planned course marker 7 by the digitizer 7 is sequentially sent to the planned course memory 21. When the trace by the digitizer 7 reaches the point (for example, a road intersection), the direction indicator data indicating the direction of travel at the point, that is, whether to turn right, turn left, or go straight at the point, is sent to the direction indicator. Scheduled course memory 21 by -20
Enter. At this time, the positional information input into the planned course memory 2I, that is, the positional information of the point and the direction instruction data are input into the planned course memory 21. In this manner, while the digitizer 7 traces the entire course to be traveled, the position information of predetermined points and the direction instruction data at the points are sequentially stored.

Next, the current position information of the moving object during traveling will be explained. The traveling direction information (analog signal) detected by the direction sensor 5 is converted into a digital signal by the A/D converter 22. On the other hand, a counter 23 counts pulses output from the distance sensor 6 every time a predetermined distance is traveled (for example, in response to the rotation of a wheel), and the counter 23 receives a sample clock every predetermined count value. Output. Then, the current position calculating section 24 calculates and sequentially adds the X component and the X component of the unit traveling distance based on the output of the A/D converter 22 every time the sample clock is output from the counter 23. That is, the current position calculation unit 24 sequentially calculates and outputs position information of the current position based on the starting point, and the current position information is stored in the current position memory 25. That is, the contents of the current position memory 25 are updated every time the moving body travels a unit distance, and the latest current position information is always held in the current position memory 25. Assuming that the foil has left the starting point in the position memory 25, at that point, the comparing section 27 stores the position information of the first point after the departure read out from the planned course memory 21 and the position information of the first point. The contents of the current position memory 25 and the comparison section 27
Based on the comparison, a direction indication is displayed on the direction indication display section 10. For example, if the content of the direction instruction data is to instruct a right turn, a right turn is displayed among right turn, left turn, and straight forward indications on the direction instruction display section 10, as shown in FIG.

The direction instruction data is also transferred to the audio memory 28. The voice memory 28 stores in advance voice information instructing to turn right, turn left, and go straight, so for example, if the content of the direction instruction data is an instruction to turn right, voice information instructing to turn right is stored. The address is accessed and the speaker 11 is connected via the voice synthesis section 29 and amplifier 30.
A voice announcement instructing the driver to turn right, for example, ``Turn right at the next intersection'' is made.

In this way, right turn, left turn, or straight ahead course instructions are given by the direction instruction display section 1O and the speaker 11 at the points of the second cylinder, the third, and so on.

Furthermore, the embodiment shown in FIGS. 2 and 3 includes a direction display section 12 for displaying the traveling direction of the moving object and a trip display section 13 for displaying the travel distance. That is, the detection signal of the direction sensor 5 that has been A/D converted by the A/D converter 22 is compared with the contents of the direction reference memory 31 set in advance in the direction calculating section 32, and the detected signal is The direction is displayed by the direction display section 12.
For example, as shown in FIG. 2, the display is divided into 16 directions. Further, the counter 3.3 counts the output pulses from the distance sensor 6 mentioned above, and the count value is sent to the trip display section 13. And trip display section 1
3 is composed of a multiplier, a display driver, and a display element (all not shown), and 1 is added to the above count value.
The mileage is calculated by multiplying the mileage per count, and the mileage is displayed on a display element via a display driver. Note that the counter 33 is provided with a switch (not shown) that resets the count value to zero. Therefore, the trip display section 1 shows the distance traveled from the desired point.
3 can be displayed.

As explained above, according to the travel course guidance device of the present invention, the following effects can be achieved. That is, (1) The route to be taken is displayed for each point, such as an intersection, and route instructions are given by voice.
This has the effect of driving safely without being distracted by the course guidance display screen.

(11) Since the display unit is small and lightweight, it can be easily installed even in small cars, and no special installation parts are required for installation. (Il+) Road map used for inputting planned courses teeth,
A general-purpose map can be used, and the scale can be freely selected. Also, there is no need to change maps while driving.

[Brief explanation of drawings]

FIG. 1 is an external view of a conventional driving course guiding device, FIG. 2 is a perspective view illustrating the configuration of an embodiment of the present invention, and FIG.
The figure shows a block diagram of the embodiment illustrated in FIG. In the figure, 5 is a direction sensor, 6 is a distance sensor, 7 is a digitizer, 8 is a control device, 9 is a display device, IO is a direction instruction display section, 11 is a speaker, 12 is a direction display section, 13 is a trip display section, 15 is the X counter, 16 is the Y counter, 1
7 is a scale input key, 118 is a scale memory, 19 is a planned course calculation section, 2o is a direction instruction input key, 121 is a planned course memory, 22 is an A/D converter, 23 and 33 are counters, 24 is a current position calculation unit 25 is a current position memory, 2b is a distance memory, 27 is a comparison unit, 28 is a voice memory, 29 is a voice synthesis unit, 3o is an amplifier, 31 is an azimuth reference memory, and 32 is an azimuth calculation unit. Patent applicant Alps Electric Co., Ltd.

Claims (1)

[Scope of Claims] The present position information of the moving object is provided with a direction sensor that detects the traveling direction of the moving object and a distance sensor that detects the traveling distance, and the current position information of the moving object is calculated based on the direction sensor No. ¥ib. A driving course guidance device that guides a driving course by means of a driving course is provided with a direction indication display section for instructing the traveling direction of the moving object at a predetermined point on the driving course, and also displays information on the position of the point and the corresponding direction in advance. A planned course memory is provided for storing driving direction instruction information at the point, and the driving direction at the point is determined by comparing the position information of the point stored in the planned course memory with the current position information. A driving course guidance device characterized by being configured to display an instruction display section.