KR101022171B1 - Navigation system and its operation - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system, and more particularly, to a navigation system and a method of operating the same, by providing information on a route of entry of a vehicle.

The navigation system according to the present invention provides driving convenience by providing the information of the guide object continuously generated in advance to the driver to provide driving convenience, and provides the guide object distance continuously generated when providing the road guide information with the vehicle speed. In conjunction with this, the user is provided with a prompt service.

Navigation, guidance target

Description

Navigation system and the operating method

1 is a view showing a road guidance in a conventional location-based system.

2 is a block diagram of a system for generating road guidance in a navigation system according to the present invention;

3 is a flowchart showing the operation of the navigation system according to the present invention.

4 shows a portion of a digital map as an embodiment according to the invention.

5 is a screen showing a road guide as an embodiment according to the present invention.

<Description of Signs of Major Parts of Drawings>

100: location information input unit 110: map database

120: road guidance information input unit 130: central processing unit

140: screen display

The present invention relates to a navigation system, and more particularly, to a navigation system and a method of operating the same, by providing information on a vehicle's departure route and easily following a route.

More particularly, the present invention relates to a simplified shape of an intersection, an intersection rotation guide arrow, and a method of operating the system in order to effectively guide the vehicle's entry path at the intersection when the vehicle enters the intersection.

Various vehicles such as ships, aircrafts, and automobiles are equipped with a navigation system or a global positioning system (GPS) positioning device for checking the current position and moving speed or determining the movement route. It is widely used.

In recent years, research and development of vehicle devices have been increasing, and various prototypes have been released.

In particular, the full navigation for guiding the road by displaying the location of the vehicle on the map displays the current location of the moving object calculated using the information received from the GPS on the map displayed on the screen.

In addition, the full navigation system displays a variety of information necessary for driving, such as displaying the moving direction of the moving object, the distance to the destination to go, the current moving speed of the moving object, the route set before the driver, the optimum route to the destination, etc. Provide the driver.

Such a full navigation system receives radio waves indicating latitude, longitude, and altitude from a plurality of satellites belonging to GPS, calculates the current position of the moving object, and then visually displays or hears map information including the current position to the driver. Informs the enemy.

In general, the full navigation device is a GPS receiver that receives radio waves from a plurality of satellites belonging to a GPS and calculates coordinate values of a current position, a gyro sensor and a speed sensor that detects a rotation angle and a speed of each vehicle. It consists of a sensor unit consisting of (Speed Sensor), and a map data storage unit.

However, the conventional full navigation system only displays the current vehicle's position as a dot on the digital map displayed on the screen, so that a driver who is not good at viewing the map or who cannot read the map quickly may find it difficult to find a destination. Can be.

In addition, there is a problem that can cause an accident by lowering the concentration on driving due to a complicated operation method.

On the other hand, in recent years, due to the above problems, TBT navigation that guides the road only by Turn By Turn (hereinafter referred to as TBT) separately from the full navigation forms another market.

The most basic and important function of the GUI GUI of the TBT navigation system as described above is a guide arrow indicating a direction.

1 is a view showing a road guidance in a conventional location-based system.

As shown in FIG. 1, a guide point and a start point of a guide according to a position are shown in a complex intersection in which a right turn and a left turn guide are continuously performed.                         

As the driver passes through the K-th guidance point, guidance is performed for the K-th guidance object (right turn intersection), and the guidance screen P1 for the K-th guidance object is provided to the driver, and immediately after passing through the K-th guidance object, The guidance is performed on the K + 1st guidance target (left turn intersection) until the + 1st guidance subject passes, and the guidance screen P2 for the K + 1st guidance subject is provided to the driver.

In other words, if the user wants to provide the user with information of the guidance target at the intersection where the intersection occurs continuously, the driver recognizes in advance even if the guidance is normally performed because the distance between the K-th guidance target and the K + 1st guidance target is short. There is a problem that is difficult to prepare.

SUMMARY OF THE INVENTION An object of the present invention is to provide a navigation system and a method of operating the same, which provide driving convenience by easily providing a driver with guidance information continuously generated in advance.

Another object of the present invention is to provide a navigation system for providing a road guidance service to a user quickly by interlocking a guiding target distance continuously generated when providing road guidance information with a vehicle speed, and an operation method thereof.

In order to achieve the above object, a navigation system according to the present invention comprises: a map database storing a digital map; A road guide information input unit which provides route information on the destination and information on guide objects to the destination; A location information input unit for providing a location of the vehicle; A central processor configured to determine and process a K-th guide object and a (K + 1) th guide object that satisfy a threshold condition among the guide objects from the position of the vehicle to the destination as a 'compound guide object'; And a screen display configured to display the information on the 'compound guide object' on the screen.

The 'compound guide object' is characterized in that at least two guide objects satisfy a threshold condition.

The threshold condition is characterized in that the two guide objects are smaller than a predetermined distance or the speed of the vehicle approaching the guide object is faster than the predetermined speed.

The screen display unit may simultaneously display a plurality of guide targets included in the composite guide target on the screen.

In addition, the operation method of the navigation system according to the present invention in order to achieve the above object, the K-th guide object and (K + 1) th guide object that satisfies the threshold condition among the guide objects from the current vehicle position to the destination Determining a 'compound guide object'; Passing through the guide point of the compound guide object; It characterized in that it comprises a step of guiding the 'compound guide object'.

The guide point of the 'compound guide object' is characterized in that a predetermined distance before the K-th guide object.

The threshold condition is characterized in that the two guide objects are smaller than a predetermined distance or the speed of the vehicle approaching the guide object is faster than the predetermined speed.                     

In the step of guiding the 'compound guide object', the K-th guide object and the (K + 1) -th guide object may be simultaneously guided.

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

2 is a block diagram of a system for generating road guidance in a navigation system according to the present invention.

Referring to FIG. 2, the navigation system according to the present invention includes a map database 110 storing a digital map received from GPS, and a road providing information on a road currently entering the vehicle from the map database 110. A guide information input unit 120, a location information input unit 100 for providing a location of a vehicle on a road on which the vehicle is currently entering, a screen display unit 140 for displaying a road guide information screen to a driver, and the map And a database 110, a road guidance information input unit 120, a location information input unit 100, and a central processing unit 130 that controls the display unit 140.

The central processing unit 130 determines whether there is a 'compound guide object' that occurs continuously on the road to which the vehicle is currently entering from the digital map provided from the map database 110, as well as a guide object to be currently guided. The driver then provides the information screen for the next guide.

The central processing unit 130 searches for the distance between the guide targets when there is a target to be guided and a guide target that occurs continuously, and determines that the guide target is 'compound guide target' if the distance between the guide targets is shorter than a threshold distance. do.

Further, by interlocking the determination distance of the complex guide object with the speed of the vehicle, it is possible to proactively cope with the traffic situation and provide a quick route following guidance service to the user.

Looking at the operation of the navigation system having the above configuration as follows.

First, the vehicle information terminal on which the above navigation system is mounted has a GPS receiver, and can receive a radio wave from a GPS satellite to create a digital map and determine the current position of the vehicle.

When a target, for example, an intersection, appears to determine the location of the vehicle and guide the driving direction, the driver displays a guide screen thereof.

At the same time, when a guide object that is continuously connected to the object to be guided occurs, it is determined and provided with the guide screen for the driver.

In this case, the case where the targets to be guided to occur in succession in succession is referred to as a 'compound guide target', and the criterion for determining the complex guide is a distance on a search path between guide targets.

The complex guide object determination distance may be linked with the speed of the vehicle to actively cope with traffic conditions and provide a fast route tracking service to the user.

As described above, the navigation system according to the present invention can overcome the temporal and spatial constraints that are difficult for the user to recognize the next guide by providing the next guide before the previous guide is completed for the complex guide that appears continuously.

3 is a flowchart showing the operation of the navigation system according to the present invention.

First, when the driver inputs a destination, the vehicle information terminal selects the shortest road or the best route to the destination.

In operation S100, it is determined whether the guide point of the K-th guide object passes through the selected optimal path.

As a result of the determination, when passing through the guide point of the K-th guide object, it is determined whether the K-th guide object is a 'compound guide object' (S110).

The 'compound guide object' refers to a case where a target to be guided by the navigation system is continuously connected. The determination of the compound guide object is determined by the speed of the vehicle and a set distance value, and the distance between the continuously appearing guide objects is relatively close. Will be in.

In this case, when the guide target is not a compound guide target, the K-th guide target is provided to the driver on the screen (S120), and when the guide target is a compound guide target, the K-th guide target and the K + 1st guide target are provided. Guide together (S125).

In other words, the vehicle is guided in advance before passing the guide point of the K + 1 st guide object, so that the driver can fully recognize the guide for the K + 1 st guide object.

Then, it is determined whether the vehicle has passed the K-th guide object (S130), and if the vehicle passes the K-th guide object, the operation [K = K + 1] follows, and then the flow returns to the start of the flowchart (S140).

4 is a diagram illustrating a portion of a digital map according to an embodiment of the present invention.

As shown in FIG. 4, the optimal search path from the digital map of the navigation system to the destination where the driver wants to go is tracked and shown to the driver.

Here, the arrow shows the traveling direction of the vehicle, and the first and second guide points for the guidance targets to be provided to the driver on the road with respect to the traveling direction of the vehicle are displayed.

In this case, when the distance between the guide points 1 and 2, that is, the distance between successive guide objects, is determined to be a 'compound guide object', the navigation system according to the present invention provides a complex road guide to the complex guide object.

FIG. 5 is a screen illustrating a road guidance for a route shown in FIG. 4 according to an embodiment of the present invention.

As shown in (a) and (b) of FIG. 5, the driver is provided with guide information that avoids an underground driveway when passing the first guide point, and makes a right turn after passing the second guide point. You will be provided with information.

However, when the distance between the guide targets is short or the speed of the vehicle is not enough for the user to recognize each guide target, it is determined as a 'compound guide target'.                     

As shown in (c) of FIG. 5, the road guidance for the 'compound guide object' is also made for the next guide object together with the current guide object, and the guide sequence and the compound guide expression are not confused by the driver. Make sure the driver knows how to do this manually.

When passing through the first guide point, the driver is guided by displaying guide information for avoiding the underground driveway.

Although the present invention has been described in detail with reference to specific embodiments, it is intended to describe the present invention in detail, and the navigation system and its operation method according to the present invention are not limited thereto. It is apparent that modifications and improvements are possible to those skilled in the art.

The present invention has the effect of allowing the driver to prepare for the next guide by providing the next guide in advance before the previous guide is finished for the guide targets continuously appearing in the navigation system, and to facilitate the path following.

In addition, it prevents the vehicle driver from following the route to the destination and increases the visibility and accuracy of the user's route tracking in the location-based service system to which the information usage fee is charged. It works.

Claims (11)

A map database for storing digital maps; A road guide information input unit providing route information on a destination and information on guide objects to the destination; A location information input unit for providing location information of the vehicle; A central processor configured to determine at least two guide targets satisfying a threshold condition among the guide targets as a composite guide target; It includes a screen display unit for displaying the guide information for the complex guide object, The threshold condition is a navigation system, characterized in that the distance between the reference guide object and the other guide object is shorter than the predetermined threshold distance, the threshold distance is variable in conjunction with the speed of the vehicle. delete The method of claim 1, And the reference guide object is a guide object closest to the vehicle on the route to the destination. delete The method of claim 1, And the screen display unit simultaneously displays guide information for a plurality of guide targets determined as the complex guide target. Determining at least two guide objects satisfying a threshold condition among the guide objects from the position of the vehicle to the destination as the composite guide object; Detecting passage of a guide point of the compound guide object; Providing guide information for the complex guide object; Including, The threshold condition is a distance between the reference guide object and the other guide object is shorter than a predetermined threshold distance, the threshold distance is the operation method of the navigation system, characterized in that the variable in conjunction with the speed of the vehicle. The method of claim 6, The guide point of the compound guide object is located before a predetermined distance from the reference guide object operating method of the navigation system. delete The method of claim 7, wherein And the reference guide object is a guide object closest to the vehicle on the route to the destination. delete The method of claim 7, wherein the providing of the guide information And providing guide information for a plurality of guide targets determined as the complex guide targets at the same time.

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