JPS58146814A - Traveling position display for vehicle - Google Patents

Abstract

PURPOSE:To improve the function for guiding a vehicle in traveling routes by displaying the current position of the vehicle on a road map according to the signals from detectors, setting a destination on an image plane and drawing a straight line between the destination and the current position. CONSTITUTION:The driver operates an operating device 5 to read out the image information on the map near the current position of a vehicle from a storage medium 7a with a reproducing device 7 so that the map is displayed on a display 6. On the other hand, the detection signals from a distance detector 3 and a bearing detector 4 are inputted to a signal processing unit 2, where the signals are processed arithmetically, and a mark 9 indicating the current position is displayed on the map of the display 6; at the same time, a destination 12 is displayed and a straignt line 13 is drawn between both points. The function for guiding the vehicle in the traveling routes is thus improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a traveling position table for a vehicle that is displayed on the screen of a display device and displayed on a map so that a straight line can be drawn between the current position of the vehicle and a destination. Regarding thread devices.

In recent years, when driving a car in an unfamiliar area, it is necessary to provide appropriate guidance so that the driver does not deviate from the planned course and get lost. A device for displaying the current location of a vehicle, etc. has been proposed.As such a device, for example, a computer system or the like is used to display an image of a road map and a mark of the current location of a vehicle, etc. on a display device such as a CRT display. A device has been proposed in which the driving position of a vehicle or the like can be known from a road map.

According to such a device, image information related to a road map can be handled electronically using a computer, so it is extremely useful in terms of its operability.
With simple operations, the driver can display a map on the display device and display the position marks of his own troops, allowing him to drive based on appropriate guidance.

The present inventor has created the present invention in order to further improve the above-mentioned traveling position display device, by making it possible to draw a straight line from the current position to the destination on the map on the screen of the display device,
This is intended to make the on-screen travel route guidance even easier to understand.

An object of the present invention is to enable the driver to confirm the driving position of the vehicle by displaying a road map of the area where the vehicle is driving and marks such as the current position of the vehicle on a display device installed in the driver's seat. In addition, in a vehicle traveling position display device that is displayed on the display device and allows operations such as writing a destination on a map, the current position and destination of the vehicle on the map can be displayed on the screen of the display device. To provide a driving route display device for a vehicle which can draw a straight line between the lines, thereby helping to select and judge the optimum driving route to a destination during driving.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of a vehicle running position display device according to the present invention. To explain the outline, the vehicle running position display device 1 has a signal processing device consisting of a computer in the central part. 2 is provided, and the signal processing device 20
A distance detector 3, a direction detector 4, and an operating device 5 are provided as devices on the input side, a display device 6 is provided as a device on the output side, and information related to a road map is stored as an external device. It is configured to include a digital information storage medium reproducing device 7 to which a storage medium can be detachably attached.

The distance detector 3 is composed of a photoelectric sensor that outputs a single pulse signal in proportion to the number of rotations of the wheels, and generates a signal corresponding to the distance traveled by the vehicle.
For example, it consists of a rate-type gyroscope or the like that detects the angular velocity when the vehicle changes direction, and outputs a signal proportional to the amount of change in direction in response to changes in the direction of travel of the vehicle. The operating device 5 includes a plurality of operating switches, and by operating the switches, it sends various commands to the signal processing device 2 and displays various images displayed on the display device 6 via the functions of the signal processing device 20. The form can be changed as appropriate.

On the other hand, the display device 6 is, for example, a CRT display that displays a map surface image and marks such as the current position of the vehicle on the same screen, and the playback device 7 converts the road map in raster mode in advance. It has a function of reading out the image flaw information from the digital information storage medium 7a on which information converted into information in pixel units is recorded and sending it to the signal processing unit [12].

It is assumed that a travel trajectory storage device is provided inside the signal processing device 2, and this device sequentially stores data of the vehicle position on the two-dimensional coordinates that changes every moment, which is determined by the calculations of the signal processing device 2. This device is held as finite continuous information up to the current position of the vehicle, but this device can also be provided as an external device.

Next, the operation of the signal processing device 2 including the above-mentioned components and the overall operation as a vehicle travel position display device will be explained.

First, before the vehicle starts traveling, the operation switch of the operation device 5 is operated to read the image information of the map near the current position of the vehicle from the digital information storage medium 7a via the reproduction device 7, and the image information is read out from the digital information storage medium 7a. The signal processing device 2 stores a mark in its internal memory and displays it on the screen of the display device 6, and also displays a mark representing the current position of the vehicle, which is aligned in advance and corresponds to the map. It is displayed superimposed on the map image displayed on the screen in step 6.

After that, when the vehicle starts running, the distance detector 3 sends a pulse signal to the signal processing device 2 for each unit distance, and the signal processing device 2 counts the number of pulses to measure the distance traveled. The output of the direction detector 4 is sent to the signal processing device 2, where the direction of travel of the vehicle at every moment is determined.

The signal processing device 2 calculates the current position (x, y) on the X-Y coordinates according to a preset map scale rate based on the obtained vehicle travel distance and changes in direction. The calculation results are sequentially sent to the display device 6, and are also sent to the travel trajectory storage device and stored therein. The contents stored in the traveling trajectory storage device are read out and sent to the display device 6, and at the same time, a signal related to the current direction of travel of the vehicle is sent from the signal processing device 2 to the display device 6, and each of the above signals is sent to the display device 6. A predetermined display is performed on the screen of the display device 6 based on this.

Based on the above operations, the screen 6a of the display device 6 displays an image 9 related to a road map, for example, as shown in FIG.
J8 is displayed, and on the picture there are a current position display mark 9 representing the current position of the vehicle, a direction display mark 10 representing the direction of travel of the vehicle, a travel trajectory display mark 11 representing the travel trajectory to the current position, etc. These marks will move on the map following the actual driving of the vehicle, and the driver who visually recognizes them will know the current location of the vehicle on the map on the screen. . In this case, the direction from mark 9 to mark 10 is assumed to be the direction in which the vehicle is traveling.

Next, in the traveling position display device according to the present invention, the following functions are added to the operating device 5 and the signal processing device 2.

As mentioned above, an image related to a predetermined road map is displayed on the screen 6a of the display device 6, and as shown in FIG. When the current position and destination of the vehicle exist, it would be possible to display the destination 12 on the map and draw a straight line 13 between the destination 12 and the current position 9 of the vehicle. For this purpose, the operating device 5 is provided with an operating switch and an operating section for specifying and displaying a destination and for drawing a straight line between the destination and the current position of the vehicle. The signal processing device 2 has a built-in function for displaying the destination at a predetermined position on the map on the screen of the display device 6 in response to a signal from the operating device 5, and for drawing a straight line between the destination and the current vehicle position. become.

If you can display the destination on the map on the screen as shown above and draw a straight line between the destination and the current location, that straight line represents the shortest distance to the destination, and the direction of the straight line is the same as the destination. Since this indicates the direction toward the ground, it becomes easier for the driver to decide which route to select for subsequent vehicle travel. In other words, if you drive by selecting a driving route that follows ii#13 drawn on the screen of the display device 6, you will be able to reach your destination in a short time and reliably. This makes it possible to further increase the utility.

In the above, a mark such as an arrow indicating only the direction of travel of the vehicle is displayed at an appropriate location on the screen of the display device 6, and [
A display method that makes it easier to see in relation to 1fs13 is also possible.

For example, when drawing a straight line on a map, if there is an obstacle that obstructs the travel route, such as a river, set an intermediate point such as a bridge on the map, and draw a broken line using the bridge as the breaking point. It is also possible to Also, a plurality of intermediate points can be provided.

The content of the present invention will become clear from the description of the above embodiments.1 However, the present invention is not limited to the above embodiments, and it goes without saying that the design can be changed as desired without departing from the gist of the invention. .

As is clear from the above description, according to the present invention, a computer system is used on a display device installed in the driver's seat to display a road map and a bright spot mark indicating the current position of the vehicle that moves in accordance with the travel of the vehicle. is displayed on the driving position display device, which allows you to check the current position of the vehicle on the map (), set the destination on the screen, and draw a straight line between the destination and the current position of the vehicle. This makes it possible to further improve the function of guiding a vehicle's route, and furthermore, it is extremely convenient for selecting and determining the shortest route to a destination. demonstrate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a diagram showing the configuration of a traveling position display device, FIG. 2 is a diagram showing an example of a display screen of a display device, and FIG. 3 is a diagram showing an example of a display screen of a display device. FIG. 3 is a diagram showing a state in which a straight line is drawn between a destination and a current position. In the drawing, 2 is a signal processing device, 3 is a distance detector, 4 is a direction detector, 5 is an operating device, 6 is a display device, 7 is a playback device for a map image, and 9 is a mark representing the current position. , 12
is a mark representing the destination, and 13 is a straight line. Patent applicant Honda Motor Co., Ltd.

Claims (2)

[Claims] (1) Information related to the vehicle position is obtained using the detection signals from the detector related to the distance traveled and the direction of travel and the calculation function of the signal processing device, and information related to the vehicle position is obtained from the storage medium on which image information related to the map is recorded via the playback device. Predetermined map information is read out, each of the above information is kept in the signal processing device, and displayed on the screen of the display device by the signal processing device, so that the driver can know the current traveling position of the own vehicle. In the apparatus, an operating device is provided, and the operating device and the signal processing device include:
The present invention is characterized by having a function for setting a destination, as well as a function for displaying a straight line between the destination, the four destinations, and the current position of the vehicle on the map on the display screen of the display device. Traveling position display device for vehicles. (2) In claim 1, at least one intermediate point is set between the destination and the current position of the vehicle in the operating device and the signal processing device, and the display device is configured to set at least one intermediate point between the destination and the current position of the vehicle. A travel display device for a vehicle, characterized in that it has a function of displaying the intermediate point and a broken line connecting the destination and the current position of the vehicle via the intermediate point on a map on the screen.