KR19990034609A - Lane Guidance Method According to Route of Automatic Navigation System - Google Patents

Abstract

The present invention is a lane guidance method according to a route of an automatic navigation system, and the optimum route is determined at the intersection when the vehicle is driven by determining the shortest path between the current position of the vehicle and the desired destination using the automatic navigation system. It is convenient when driving the vehicle because it determines the lane of the vehicle in advance.The current position of the own vehicle is determined by the received signal from the GPS satellite, the current position is corrected by the vehicle position discrimination unit 16, and the driving target position is designated. An automatic navigation control method for a vehicle which reads and displays map information from a current travel position to a travel target position among map data from (2), wherein the current travel is performed on map information from the storage medium (2). The first step of setting rotation information for a plurality of turning intersections existing between the driving target position and the position, the main act of the own vehicle A second step of determining whether the value is within the set distance from the rotation information of the predetermined rotation intersection point; and a third step of calculating a driving direction of left / right turn if the running position of the own vehicle is within the set distance from the rotation information of the predetermined rotation intersection point. And a fourth step of synthesizing the calculated driving direction information for the driving direction of the left / right turn and the request information for the safe lane change for the driving direction and generating the driving lane alarm message as a voice alarm message. It is done.

Description

Lane Guidance Method According to Route of Automatic Navigation System

The present invention relates to a lane guidance method according to a route of an automatic navigation device, and more particularly, to enable automatic navigation of a corresponding vehicle based on a CD-ROM database by determining a driving position of the vehicle by a GPS satellite. The present invention relates to a lane guidance method according to a route of an autonomous navigation apparatus that enables an optimum lane selection to be made based on road information of a next section when a vehicle travels by tracking a route on a road in a vehicle autonomous navigation system.

Conventionally, the automatic navigation system which enables the automatic navigation by searching the driving position for various driving means is mainly applied to a ship or an aircraft, etc. Recently, it is applied to a vehicle traveling on the road, and the position or driving of the road currently running Various information such as driving route and road congestion on the road should be visually recognized through the monitor.

In such a vehicle's automatic navigation system, by receiving satellite radio waves from a GPS satellite navigating the earth's atmosphere, the current location of the vehicle is detected by calculating a radio wave reception distance from the satellites, and map data covering the whole country is included. It is possible to display the current position detected through the map data of the relevant area from the CD-ROM database, and also detect the mileage determined by the mileage sensing means such as the wheel rotation detection sensor and the azimuth angle detection such as the geomagnetic sensor. By calculating the driving direction by the means, it is possible to display the driving route from the driving start position to the running position on the screen so as to provide information on whether or not the correct driving is performed.

In recent years, the accuracy of map data stored in the CD-ROM database has been greatly increased, for example, the direction of driving is displayed on the monitor at a point where a change of the route, such as a crossroad or an intersection, is required. A vehicle navigation system has been developed to inform the driving direction through voice output.

However, in this automatic navigation system, the map data contained in the CD-ROM database does not contain lane information on the corresponding road, but only road selection information on the point where the load change occurred such as an intersection. As a result, inexperienced novices and pedestrians cannot choose the right lane according to the changing conditions of the road.

For example, due to a change in the direction of the road, the vehicle may turn left or right, and may not be able to easily recognize which lane to select at the present time in order to drive on the next route, and may be embarrassed by a sudden lane change. There is a danger of being caused.

Accordingly, the present invention has been made in view of the above circumstances, and the present optimum lane for not only route selection at a place where a change of road occurs when driving a road by an auto navigation system for vehicles, but also easy driving on the selected road It is an object of the present invention to provide a lane guidance method along the path of the automatic navigation system in which the selection can be performed.

According to an embodiment of the present invention for carrying out the above object, by storing the current position of the own vehicle by the received signal from the GPS satellites, and correcting the current position by the vehicle position discrimination unit and specifying the driving target position A vehicle navigation control method for reading and displaying map information from a current driving position to a driving target position among map data from a medium, the method comprising: driving target position from the current driving position in the map information from the storage medium. The first step of setting the rotation information for a plurality of rotation intersections existing in between, the second step of determining whether the running position of the own vehicle is within the set distance from the rotation information of the predetermined rotation intersection, the running position of the own vehicle A third step of calculating a driving direction of left turn / right turn within a set distance from rotation information of a predetermined rotation intersection point; and And a fourth step of synthesizing the calculated driving direction information for the driving direction of the left / right turn and the request information for the safe lane change for the driving direction by generating a driving lane alarm message as a voice signal. It provides a lane guidance method according to the path of the automatic navigation device.

Hereinafter, according to the above-described configuration according to the present invention, in a vehicle to which the automatic navigation device is applied, if the vehicle approaches within a set distance from a rotation intersection point on a driving route, it is possible to change a safe lane by cross information (left / right turn). do.

1 is a block diagram showing the configuration of an automatic navigation device for showing a lane guidance method along a route;

2 is a diagram illustrating a lane guidance method along a path of an automatic navigation device according to an embodiment of the present invention.

* Setting of symbols for the main parts of drawings

2: storage medium, 4: storage medium regeneration unit,

6: decoder, 10: control switch unit,

12: encoder, 16: vehicle position discrimination unit,

17: audio processing unit, 18: monitor display control unit,

20: monitor, 22: video memory.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.

First, FIG. 1 is a block diagram showing the configuration of an automatic navigation device for showing a lane guidance method along a route. Reference numeral 2 denotes a disk-shaped storage medium containing map information data compressed at a predetermined scale ratio. The map information data stores / stores route information, intersection information, lane information, and the like to the destination.

Reference numeral 4 denotes a storage medium reproducing unit for reading the map information data recorded on the storage medium 2, and reference numeral 6 denotes map information read out from the storage medium 2 by the storage medium reproducing unit 4; Represents a decoder that decodes data.

Further, reference numeral 10 denotes a control switch for the driver to input the destination of the vehicle on the basis of the map information reproduced from the storage medium 2, and the control switch unit 10 displays the screen of the map information data. 'Menu', 'Imformation', 'Reset', 'Enlargement', 'Reduction' as optional items for proper guidance of map information by controlling the display status And the like. 12 denotes an encoder that encodes a switch signal relating to menus, information, resets, enlargements, and reductions input from the control switch unit 10.

14 is encoded and applied by the encoder 12 on the basis of map information (eg, road information, lane information, etc.) data from the storage medium 2 decoded and applied by the decoder 6 to the destination of the driver. Represents a navigation processing unit that calculates the shortest distance to.

Meanwhile, the navigation processor 14 calculates left / right turn information and right lane selection information for making a left / right turn at the intersection with the shortest distance to the destination based on the map information data, that is, the shortest path image for the destination. It is determined whether the vehicle is left / right or straight ahead of the intersection located at the intersection with the intersection and the lane is selected again for the road read from the storage medium 2 based on the determination. CPU 14a enabling selection of lanes according to the interface, and interface 14b for interfacing screen display data executed under the control of the decoder 6 and / or encoder 12 and the CPU 14a. A ROM 14c in which program data executed by the CPU 14a is recorded, and a RAM 22d providing an area necessary for the work of the CPU 14a.

In addition, a voice memory is built in the ROM 14c of the navigation processor 14, and a voice synthesizer for synthesizing the voice signal read out from the voice memory is built in the CPU 14a. have.

16 indicates a vehicle position discrimination unit for determining the current position of the vehicle when the navigation processor 14 calculates the shortest distance to the destination, and 17 indicates a voice for the road determined / selected by the CPU 14a. An audio processor for modulating / amplifying and outputting information is shown.

18 denotes a monitor display control unit which displays on the monitor 20 map information data applied under the control of the CPU 14a of the navigation processor 14, and 20 denotes map information by receiving a control signal of the monitor display control unit. A monitor for reproducing and outputting video signals of data is shown.

Hereinafter, the operation of the lane guidance method along the path of the automatic navigation apparatus according to the present invention having the above-described configuration will be described in detail.

First, when the storage medium reproducing unit 4 reads map information, a route, an intersection, a left / right turn, lane selection information, etc. from the storage medium 2, the read map information data is stored in the decoder 6. Is decoded.

In this state, if the driver inputs the destination of the vehicle by operating the control switch 10 based on the map information reproduced from the storage medium 2, the map information is properly controlled by controlling the screen display state of the map information data. To be guided. Then, the encoder 12 encodes a switch signal relating to a menu, information, reset, enlargement, and reduction input from the control switch 10.

Then, the navigation processor 14 determines whether or not the intersection located on the shortest route to the destination and the left / right turn or straight ahead of the intersection based on the map information data, and the memory again according to the determination. The operation / judgment is made so that the lane selection for the road read out from the medium 2 can be performed. That is, it is solely responsible for determining the appropriate lane selection according to the change of the road on the route to the desired destination.

For example, as shown in FIG. 2, in order to drive a vehicle on a predetermined path (solid line) at the current location, the vehicle has to turn left at a point A at a point 100 meters before the intersection because the vehicle must turn left at the intersection B in front of the intersection. If it is determined by the navigation processor 14 that it is advantageous to change, the driver informs the user of information such as 'lane change from local point A to one lane and turn left at 100m forward intersection B' through the audio and video output device. Do it.

Thus, the audio processing unit 17 and the navigation processing unit 14 calculates and determines the intersections according to the route of the vehicle destination and the selection of lanes to facilitate left / right turn and left / right turn at the intersection. It is applied by the monitor display control unit 18 to perform image processing to reproduce and output through the monitor 20, and to the corresponding character from the audio memory constructed in the ROM 14c based on the processing signal of the CPU 14a. The audio signal is read and synthesized by a voice synthesizer (not shown) inside the CPU 14a, and modulated / amplified by the audio processor 17 to be reproduced by a speaker (not shown).

As described above, according to the lane guidance method according to the path of the automatic navigation apparatus according to the present invention, the automatic navigation system is used to determine the shortest path between the current position of the vehicle and the desired destination, so Since the optimal lane is determined in advance of the left / right turns, there is an advantage of adding convenience when driving the vehicle.

Claims (2)

The current driving in the map data from the storage medium (2) by grasping the current position of the own vehicle by the received signal from the GPS satellite, correcting the current position by the vehicle position discrimination unit (16), and specifying the driving target position. In the vehicle automatic navigation control method for reading and displaying the map information from the position to the driving target position, A first step of setting rotation information for a plurality of rotation intersection points existing between the current travel position and the travel target position in the map information from the storage medium 2, A second step of determining whether the traveling position of the own vehicle is within a set distance from the rotation information of the predetermined rotation intersection point, A third step of calculating a driving direction of left turn / right turn when the running position of the own vehicle is within a set distance from the rotation information of the predetermined rotation intersection point; And a fourth step of synthesizing the calculated driving direction information for the driving direction of the left turn / right turn and the request information for safe lane change for the driving direction by generating a driving lane alarm message as a voice signal. Lane guidance method along the route of automatic navigation system. And generating a driving lane display message for the driving direction information and the lane change request and displaying the driving lane information message on the monitor 20 when the driving lane alarm message is voiced in the fourth step. Lane guidance method along the route of navigation system.