KR20040040903A - Method for guiding route of vehicle in navigation system - Google Patents

Abstract

PURPOSE: A method for guiding a traveling route of a moving object in a navigation system is provided to guide the traveling route in real time and to shorten a time required for tracing a route guidance by setting the route guidance. CONSTITUTION: A present position of a moving object is detected and a traveling route of the moving object from the present position to a destination is set(402). A route guidance for guiding the traveling route by means of a voice signal is set. When the moving object travels along the traveling route, the distance between the present position of the moving object and a position of the route guidance is calculated. If the remaining distance is less than a predetermined distance, the traveling route is provided to a user with a voice signal.

Description

Method for guiding route of vehicle in navigation system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling route guiding method of a moving body in which a predetermined moving object including a vehicle, etc., guides a traveling route to travel to a destination. The present invention relates to a method of guiding a driving route of a moving object in a navigation system for setting guide objects located on a path and guiding a driving route of the guide object as the moving object approaches the set guide objects.

In general, a vehicle navigation system transmits signals transmitted by a plurality of GPS satellites belonging to a Global Positioning System (GPS) and detects signals of a plurality of sensors installed in a moving object such as a gyro and a speed sensor. The present invention provides a function of detecting the current position of the moving object currently being driven, searching the driving route from the starting point to the destination by comparing the detected current position with the map data, and guiding the moving of the moving object.

The driving route from the current position of the moving object to the destination is selected, and when the moving body travels along the traveling route, a predetermined guide object including an intersection, an underground road, an overpass or an expressway entrance and exit road, etc. When the moving object approaches within a predetermined distance of the searched guide object, the moving path of the moving object at the guide object position is guided.

In guiding the driving route of the guide target, a guide target located in front of the driving route is searched when the moving object is traveling, and the guide target when the moving object approaches the searched guide object within a predetermined distance. In order to guide the driving route in, when the driving route guidance is completed in the guide target in which the current moving object is located, the following guidance target is searched to guide the driving route.

This conventional technique will be described in detail with reference to the drawings of FIG. 1.

1 is a signal flow diagram illustrating a conventional driving route guidance method. As shown in FIG. 100, when the driver of the moving object inputs a destination to which the moving object moves through the input means of the navigation system in step 100, the navigation system uses the received data from the GPS satellites in step 102. The current position of the moving object is detected, and in step 104, the optimal driving route from the detected current position of the moving object to the destination is detected and stored through the map data, and the current position of the moving object along with the map data on the display screen of the display unit. Is displayed so that the driver can check the driving route of the moving object.

When the moving object travels in the next step 106, the navigation system searches for a predetermined guide object located in front of the moving object in the step 108. For example, a predetermined guide object is searched for, including an intersection, a diverging road, a confluence road, an underground roadway, an entrance and exit road on an overpass, and the like located in front of the moving object.

In the next step 110, the navigation system detects the current position of the moving object in real time with the received data of the GPS satellites, and displays the current position of the moving object together with the map data on the display screen of the display unit. The remaining distance from the current position of the moving object to the guide object position is calculated, and in step 114, it is determined whether the moving object has reached the driving path guide position of the guide object.

For example, when the residual distance from the current position of the detected moving object to the guide target position is within a preset threshold distance, it is determined that the movable body has reached the driving route guide position of the guide target, It is determined that the driving route guidance position has not yet been reached.

When the moving object does not reach the driving route guidance position as a result of the determination of the step 114, the navigation system returns to step 110 to detect and display the current position of the moving object and the remaining position from the current position of the moving object to the guide target position. By calculating the distance, it is repeated to determine whether the moving object has reached the driving path guide position in the guide object. When the moving object reaches the driving route guide position in the guide object as a result of the determination of the step 114, the navigation system guides the driving path of the moving object in the guide object with a voice signal in step 116. In step 118, it is determined whether the moving object has arrived at the destination.

When the moving object does not arrive at the destination as a result of the determination of step 118, the navigation system returns to step 108 to search for a guide object in front of the moving body of the moving object, and detect and display the current position of the moving object. When the target driving route guide position is reached, the operation of guiding the traveling route of the moving object is repeatedly performed.

When the moving object arrives at the destination in step 118, the guide operation of the driving route ends.

According to the conventional driving route guidance method, when the moving object travels, the guide object located in front of the traveling body of the moving object is searched, and when the searched driving path guidance position of the guide object is reached, the moving path of the moving body is guided. When the driving route guidance is completed in the current guide target, the following guide target is detected to guide the driving route.

Therefore, when a plurality of guide targets are positioned continuously, it may not be possible to perform all the driving route guidance in the plurality of guide targets. For example, as shown in FIG. 2, when the driving path 210 of the moving object turns right after turning left at the intersection 200, the conventional navigation system provides a normal turn guidance at the intersection 200. Although it may be performed, after the moving object turns left at the intersection, the moving object passes through the position of the guiding object to be turned right before the navigation system searches for the guiding object to be turned right.

Therefore, the navigation system may cause an error to guide the right turn after the moving object passes the position of the guide object to be turned right or may not guide the position of the guide object to be turned right, thereby causing the movable body to move along the correct path. There was a problem such as not guiding the driving route.

Therefore, an object of the present invention is to set a single-path guide object among the traveling paths searched from the current position of the moving object to the destination before the moving object, thereby reducing the time required for the moving object to track the guide target point while driving, The present invention provides a driving route guidance method of a moving object in a navigation system capable of real-time guidance of a driving route.

Another object of the present invention is to determine the distance between the single path guide targets, and if the determined distance is within the threshold distance, set the guide targets within the threshold distance to the compound path guide target, the compound is a compound guide while driving The present invention provides a method for guiding a driving route of a moving object in a navigation system capable of real-time guiding a driving route by shortening a time required to track an object.

According to the driving route guidance method of the moving object in the navigation system of the present invention having the above object, when the destination of the moving object is input, detect the current position of the moving object, and search and set the driving route from the detected current position to the destination. and it sets the in searching for a position on the traveling route set a single destination and route guidance, there is a distance to one another within a threshold distance from the route guidance, destination search, one single route guidance to the destination route guidance target compound.

In addition, the vehicle searches for the single-path guide object and the compound path guide objects located in front of the vehicle according to the movement of the moving object, and provides the single path guide when the moving object approaches the searched single-path guide object and the compound path guide objects within a predetermined distance. Guide the driving route at the location of the object or compound route guidance object.

Therefore, in the navigation system of the present invention, the driving route guidance method of the moving object detects the current position of the moving object, searches for and sets the traveling route of the moving object from the detected current position to the destination, and sets the voice on the driving route before executing the set route guidance. Search and set a guide object for guiding the driving route by a signal; and, when the moving object travels along the set driving path, the remaining driving distance from the current position according to the moving of the moving object to the set position of the guide object When the calculated remaining driving distance is within a predetermined distance, the driving route of the corresponding guide object is guided by a voice signal.

The setting of the guide object may include calculating a driving distance between guide objects positioned on a driving path, and setting the guide object as a single path guide object when the calculated driving distance is greater than or equal to a threshold distance, and the driving distance is previously set. In the case of within the set threshold distance, it is characterized in that the combination of the guide object to set as one complex path guide object.

1 is a signal flow diagram showing a conventional driving route guidance method,

2 is a view for explaining an error generated when guiding a driving route according to a conventional driving route guidance method,

3 is a block diagram showing the configuration of a navigation system to which the driving route guidance method of the present invention is applied;

4 is a signal flow diagram illustrating a process of setting a single path guide object in the driving path guide method of the present invention.

FIG. 5 is a signal flow diagram illustrating a process of setting a compound path guide object among the single path guide objects set in FIG. 4;

FIG. 6 is a signal flow diagram illustrating an operation of guiding a driving route of a moving object in a single route and a compound route guide object set in the driving route guidance method of the present invention.

FIG. 7 is a diagram for describing an operation of setting a single path guide object and a compound path guide object in FIGS. 4 and 5.

Explanation of symbols on the main parts of the drawings

300: GPS satellite 302: antenna

304: GPS receiver 306: input unit

308: Map data storage unit 310: Main control unit

312: display drive unit 314: display unit

316: voice signal guide unit 318: speaker

Hereinafter, the driving route guidance method of the moving object in the navigation system of the present invention with reference to the accompanying drawings 3 to 7 will be described in detail.

3 is a block diagram showing the configuration of a navigation system to which the driving route guidance method of the present invention is applied. As shown therein, the GPS receiver 304 receives the position data transmitted by the three or more GPS satellites 300 through the antenna 302, the input unit 306 that receives the destination of the moving object according to a user's operation; And a map data storage unit 308 storing map data such as a compact disc, and the current position of the moving object based on the received signal of the GPS receiver 304, and receiving a destination through the input unit 306. The driving route from the current position of the moving object to the destination is set and stored with reference to the map data stored in the map data storage unit 308, and the guidance target located on the driving route is set to drive at the target location. The main control unit 310 for controlling the route guidance operation, and a table displaying the current position of the moving object together with the map data on the display unit 314 under the control of the main control unit 310. The driving unit 312 and the voice signal guide unit 316 for guiding the driving path of the moving object through the speaker 318 under the control of the main control unit 310.

The guide method of the present invention applied to the navigation system having such a configuration is to first select a guide object before moving the moving object, and as shown in FIG. 4, a user inputs a destination to move the moving object by operating the input unit 306. In this case, the main controller 310 detects the current position of the moving object in step 402 by using the received data of the GPS receiver 304, and optimally travels from the current position of the detected moving object to the destination in step 404. Navigate to and save the route.

In the next step 406, the main controller 310 searches for a guide object to guide the driving of the moving object from the current position of the moving object along the stored optimal driving path and stores it as a single path guide object, and in step 408 It is determined whether the search for the guide object to the destination is completed, and when the search for the guide object to the destination is not completed, return to step 406 and search for the guide object to guide the driving of the moving object along the driving route, The operation of repeating the operation as the path guidance target is repeated, and ends when the search for the guidance target to the destination is completed.

5 is a signal flow diagram illustrating a process of setting a compound path guide object among the single path guide objects set in FIG. 4. As shown in FIG. 4, when the search operation of the single path guide object of FIG. 4 is completed, the main controller 310 selects one single path guide object in step 500. For example, the single path guidance object closest to the destination of the moving object is selected.

In the next step 502, the main controller 310 calculates the mileage between the selected single-path guide object from the next single-path guide object, and in step 504 the calculated travel distance is within two thresholds If so, in step 506, the selected single path guide object is added to the next single path guide object and stored as a compound path guide object.

In the next step 508, the search operation of the compound path guide object is completed, that is, the operation of searching for the compound path guide object for all the single path guide objects located between the current position of the object and the destination of the moving object is completed. Determine whether or not.

In the case where the search for the compound path guide object is not completed as a result of the determination of step 508, the next single path guide object is selected in step 510, and the process returns to step 502, and the selected single path guide object is selected. The operation of calculating the traveling distance between the next single-path guidance target from the target and setting the compound path guidance target when the distance is less than or equal to the threshold distance is repeated.

When the search for the compound path guide object is completed as a result of the determination of step 508, the main controller 310 ends the search operation for the compound path guide object.

FIG. 6 is a diagram for describing an operation of performing a driving route guidance at a position of a single route guidance target set in FIG. 4 and a complex route guidance target set in FIG. 5. As shown in FIG. 6, when the moving object moves along the driving route in step 600, the main control unit 310 searches for the current position of the moving object with the received data of the GPS receiver 304 in step 602 and displays the display unit ( 314) together with the map data, and in step 604, the single-path guidance object or the compound-path guidance object located in front of the driving from the current position of the moving object, that is, the single-path guidance object set in FIG. 4 or in FIG. Read the set compound path guide object.

In the next step 606, the traveling distance from the current position of the moving object to the read single path guide object or the compound path guide object is calculated, and the moving object is the driving path guide position, for example, the single path guide object or the compound path guide object. It is determined whether or not the vehicle has approached within about 100m.

When the moving object does not reach the driving route guidance position as a result of the determination in step 608, the main controller 310 returns to step 606 to read the single path guidance target or compound read from the current position according to the traveling of the moving object. The operation distance to the route guidance target is calculated, and the operation of determining whether the moving object has reached the traveling route guidance position is repeatedly performed.

When the moving object reaches the driving route guide position as a result of the determination in step 608, the main controller 310 guides the driving route in the single route guidance target or the composite route guidance target in step 610. That is, when the moving object reaches the driving path guide position of the single-path guidance object, for example, the voice signal "turn left about 100m" is output to the speaker 318 through the voice signal guide unit 316. When the moving object reaches the driving path guide position of the compound path guide object, for example, the voice signal "turn left about 100m and then turn right" through the voice signal guide 316. The speaker 318 outputs and guides.

In the next step 612, it is determined whether the moving object has arrived at the destination, and if the determination is not reached at the destination, the process returns to step 602 to read out the single path guide object or the compound path guide object to be guided next. When the moving object reaches the driving route guidance position, the operation of guiding the driving route in the corresponding guide object is repeated, and the guidance operation is terminated when the moving object arrives at the destination as a result of the determination of step 612.

That is, according to the present invention, as shown in FIG. 7, the movable body travels along a predetermined travel path from the current position 700 to the destination 710, and the predetermined guide objects 720-1 to 720-are driven on the travel path. If 8) is present, the guide objects 720-1 to 720-8 are searched before moving the moving object in the search process of the single path guide object of FIG. 4 and set as the single path guide object. In the process of searching for the compound path guide object of FIG. 5, a single path guide object within a threshold distance, for example, the guide object 720-3, is calculated by calculating a driving distance between the guide objects 720-1 to 720-8. It is determined that the driving distance between the 720-4 and the guide targets 720-7 and 720-8 is within a critical distance, and the guide target 720-4 and the guide target 720-8 are guided targets 720-3. ) And the set targets in the driving route guidance process of FIG. Effect on the voice guidance for the route guidance target (720-3, 720-4), (720-7, 720-8).

On the other hand, while the present invention has been shown and described with respect to specific preferred embodiments, various modifications and changes of the present invention without departing from the spirit or field of the invention provided by the claims below It can be easily understood by those skilled in the art.

As described above, the present invention first searches for a single-path guide object on a driving path before the moving object travels, and among the searched single-path guide objects, a single path guide object having a driving distance within a critical distance is a compound path guide object. By setting the driving path to guide the driving path, the moving path guide operation of the moving body is performed very quickly, and it is possible to accurately guide the driving path without loss of all the guide objects.

Claims (2)

Detecting a current position of the moving object and searching for and setting a driving route of the moving object from the detected current position to a destination; A second step of searching for and setting a guide object for guiding the driving path with a voice signal on the driving path set in the first step before driving the moving object; A third step of calculating a remaining travel distance from the current position according to the moving of the moving object to the position of the guide object set in the second step when the moving object travels along the driving path set in the first step; And a fourth step of guiding the driving route of the corresponding guide object using a voice signal when the remaining driving distance calculated in the third process is within a preset distance. The method of claim 1, wherein the setting of the guide object of the second process comprises; A twenty-first step of calculating a travel distance between a plurality of guide objects positioned on the travel path; A twenty-second step of comparing the driving distance calculated in the twenty-first step with a preset threshold distance; A twenty-third step of setting the corresponding guide object as a single-path guide object when the driving distance calculated as a result of the comparison in the twenty-second step is greater than or equal to a preset threshold distance; And If the driving distance calculated as a result of the comparison in step 22 is within a predetermined threshold distance, the driving path of the moving object in the navigation system, characterized in that the 24th step of setting the combined guide object as one compound path guide object; How to guide.