KR20040066528A - Method for controlling navigation system having limiting conditions - Google Patents

Abstract

PURPOSE: A method for controlling a navigation system with an appended constraint is provided to improve road information by filtering detailed road information based on vehicle information inputted into the navigation system to provide an optimized route. CONSTITUTION: Vehicle information for a vehicle having a navigation system is inputted(S100). After the vehicle information is inputted, a driver inputs a destination(S200). After the destination is inputted, a current location of the vehicle is found and map data corresponding to the current location is searched(S300). After completing the search of the map data, filtering the searched map data and the vehicle information is performed to obtain a filtered map indicating an available routes for the destination(S400). The shortest distance up to the destination is analyzed based on the filtered map(S500). Thereafter, the shortest distance obtained is provided to the driver(S600).

Description

How to control navigation system with added constraints {METHOD FOR CONTROLLING NAVIGATION SYSTEM HAVING LIMITING CONDITIONS}

The present invention relates to a navigation system, and in particular, by inputting vehicle information (full length, width, height, weight, etc.) to the navigation system, the driver is provided with accurate road information that the vehicle equipped with the navigation system can actually drive. The present invention relates to a method of controlling a navigation system with added constraints for convenience.

In general, a vehicle navigation system displays digital map data around a current location of a vehicle on a display device in compact disc-read only memory (CD-ROM), digital video disc-read only memory (DVD-ROM), and flash memory. The driver outputs a turn-by-turn guidance voice through a separate speaker to read from the back and guide the route to the destination.

1 is a block diagram showing the configuration of a general vehicle navigation system.

The GPS (Global Positioning System) receiver 12 receives radio waves from a plurality of satellites belonging to the GPS through an antenna (not shown). The gyro sensor 14 and the velocity sensor 16 constitute a sensor unit, which detects the rotation angle and the speed of the vehicle by the gyro sensor 14 and the speed sensor 16, respectively. do. The map data storage unit 18 stores map data and other additional information data. The map data storage unit 18 is generally implemented as a CD-ROM.

The controller 10 controls the overall operation of the navigation system. For example, the controller 10 calculates the current pseudo position of the vehicle based on the rotation angle and the speed of the vehicle transmitted from the sensor unit, and also the pseudo coordinate value of the current position transmitted from the GPS receiver 12. And one of the calculated pseudo position values. At this time, the selection criteria are based on the calculated value when the cumulative error is small from the sensor unit, and when the cumulative error is increased, the cumulative error is corrected by the value transmitted from the GPS receiver 12. In addition, the control unit 10 calculates driving information such as the speed of the vehicle and the direction in which the vehicle is traveling, as well as the current position of the vehicle. The controller 10 reads map data of the surrounding area from the map data storage unit 18 based on the calculated driving information, visually displays the display data on the display unit 26, and outputs the sound through the speaker 30. . In addition to these basic functions, the controller 10 also provides a function of guiding an optimal path from a current location to a destination. Read only memory (ROM) 20 and random access memory (RAM) 22 temporarily store a program for the operation of the controller 10 and data processed during the operation. The graphic processor 24 processes the driving information calculated by the controller 10 as display data so that the driver can visually check. The display unit 26 displays the display data processed by the graphic processor 24. The display unit 26 may be implemented as a cathode ray tube (CRT) or a liquid crystal display (LCD). The voice processor 28 processes the driving information calculated by the control unit 10 as voice data so that the driver can confirm audibly. The speaker 30 outputs the voice data processed by the voice processor 28. The graphic processor 24 and the voice processor 28 process the map data read from the map data storage unit 18 and the state occurring during the execution of various functions as display data and voice data.

Currently, navigation systems are mainly installed in general passenger cars, but are currently installed in multi-purpose vans such as VAN, RV, SUV, passenger cars, and large vehicles such as trucks, buses, construction equipment, etc. for logistics or operation management.

However, since such vehicles, such as trucks, buses, construction equipment is more than a few meters in height, there are things that can not actually pass such as bridges, bridges, tunnels, etc., and there are bridges and roads that do not pass through the weight restrictions The current navigation system can provide a route that a real vehicle cannot operate by simply providing road map information, and the road, overpass, bridge, tunnel, etc. are damaged and collapsed due to the operation of a large vehicle due to this misinformation. There is a problem.

Accordingly, an object of the present invention is to solve the above problems, and when the vehicle information (full length, full width, height, weight, etc.) is input to the navigation system, the road detail information (bridge, overpass, tunnel, etc.) in the navigation system, By providing only an optimal route by filtering only the places where the vehicle can pass according to the allowable weight information, etc.), it is possible to provide convenience to the driver by accurately providing road information on which the vehicle equipped with the navigation system can actually travel.

1 is a block diagram showing the configuration of a general vehicle navigation system

2 is a flowchart illustrating a method for controlling a navigation system with added constraints according to the present invention.

<Description of the symbols for the main parts of the drawings>

S100: Vehicle information input step S200: Destination input step

S300: location tracking step S400: filtering step

S500: shortest distance analysis step S600: guide step

S700: Repeat steps

Features of the present invention for achieving the above object,

In the control method of the navigation system,

A vehicle information input step of inputting vehicle information currently equipped with the navigation system;

A destination input step of inputting a destination to which the driver wants to go while the vehicle information is input;

A location tracking step of determining the location of the current vehicle when a destination is input, and retrieving map data of the current vehicle location;

After the search of the map data is completed, the filtering step of filtering the road where the actual vehicle can drive, based on the searched map data and vehicle information,

When the filtering is completed, the shortest distance analysis step of analyzing the shortest distance to the destination using the filtered map data,

When the shortest distance analysis is completed, characterized in that it consists of a guide step to guide the driver.

Here, when the vehicle starts to move, the current position of the vehicle is continuously determined, and if the current vehicle does not reach the destination,

The method may further include a repeating step of guiding the shortest distance to the driver by returning to the location tracking step and repeating the subsequent process.

Here also the vehicle information,

The driver automatically inputs vehicle information including the total length, width, height, weight, and the like only by selecting the vehicle.

Here again the map data,

Road details such as road type, road width, bridge, overpass, tunnel height, allowable weight information, and the like are included.

Hereinafter, a navigation system control method to which a constraint condition according to the present invention is added will be described in detail with reference to FIG. 2.

2 is a flowchart illustrating a method for controlling a navigation system to which a constraint condition is added according to the present invention.

Referring to FIG. 2, the method for controlling a navigation system adding a constraint condition according to the present invention includes a vehicle information input step S100 of inputting vehicle information on which a current navigation system is mounted; A destination input step (S200) of inputting a destination to which the driver wants to go while the vehicle information is input; A location tracking step (S300) of recognizing a location of a current vehicle and retrieving map data of a location of a current vehicle when a destination is input; A filtering step (S400) of filtering roads where the actual vehicle can be driven through the searched map data and the vehicle information when the search of the map data is completed; A shortest distance analyzing step S500 of analyzing the shortest distance to the destination by using the filtered map data when the filtering is completed; When the shortest distance analysis is completed, the guide step S600 is performed to guide the driver. Here, when the vehicle starts to move, the position of the current vehicle is continuously determined, and if the current vehicle does not reach the destination, the vehicle returns to the location tracking step and repeats the following process to guide the driver to the shortest distance. Further performing step (S700).

Hereinafter, the operation of the navigation system control method with the added constraint according to the present invention will be described in detail with reference to FIG. 2.

First, the driver inputs vehicle information on which the current navigation system is mounted (S100). At this time, the driver automatically inputs default vehicle information including full length, width, height, weight, and the like by selecting the vehicle. Also, in the case of trucks, the driver may vary the current weight depending on the load.

When the driver inputs a destination to go to while the vehicle information is input (S200), the navigation system detects the location of the current vehicle (S310), and retrieves map data of the current vehicle location (S320). At this time, the road data such as road type, road width, bridge, pedestrian bridge, tunnel height, allowable weight information, and the like are data-stored.

Thus, when the search of the map data is completed, the navigation system makes a database by filtering only the roads through which vehicles can pass through the roads and each structure installed on the roads on the map data from the current location to the destination through the searched map data and the vehicle information ( S400).

When the map data is databased as described above, the navigation system analyzes the shortest distance to the destination using the database (S500), and displays the shortest distance to the driver when the shortest distance analysis is completed (S600).

Meanwhile, when the vehicle starts to move, the navigation system continuously identifies the current position of the vehicle and if the current vehicle does not reach the destination (S710), returns to step 320 (S320) and repeats the above process to the driver. Guide to the shortest distance (S720).

Therefore, by providing road information that the actual vehicle can operate in the navigation system, it is possible to prevent roads and road structures from being damaged by large vehicles.

As described above, according to the navigation system control method to which the restriction condition according to the present invention is added, when the vehicle information (full length, full width, height, weight, etc.) is input to the navigation system, the road system information (bridge, overpass, By providing the optimal route by filtering only the places where the vehicle can pass according to the height of the tunnel, allowable weight information, etc.), it is possible to provide convenience to the driver by providing accurate road information for the vehicle equipped with the navigation system. have.

Claims (4)

In the control method of the navigation system, A vehicle information input step of inputting vehicle information currently equipped with the navigation system; A destination input step of inputting a destination to which the driver wants to go while the vehicle information is input; A location tracking step of determining the location of the current vehicle when a destination is input, and retrieving map data of the current vehicle location; After the search of the map data is completed, the filtering step of filtering the road where the actual vehicle can drive, based on the searched map data and vehicle information, When the filtering is completed, the shortest distance analysis step of analyzing the shortest distance to the destination using the filtered map data, And a guide step of guiding the driver to the driver when the shortest distance analysis is completed. The method of claim 1, When the vehicle starts to move, the current position of the vehicle is continuously determined, and if the current vehicle does not reach the destination, And a repeating step of guiding the shortest distance to the driver by repeating the subsequent process by returning to the location tracking step. The method of claim 1, The vehicle information, A method of controlling a navigation system with added constraints, wherein the driver automatically inputs vehicle information including full length, width, height, weight, and the like by selecting a vehicle. The method of claim 1, In the map data, A navigation system control method with added constraints, including road details such as road type, road width, bridge, overpass, tunnel height, allowable weight information, and the like.