KR0184811B1 - Data storing method for car navigation system - Google Patents

Abstract

The present invention relates to a data storage method of an autonomous vehicle navigation system, and an object thereof is to facilitate verification of input data by storing traffic control conditions for each road constituting an intersection in a single code.

The present invention provides a vehicle navigation system including a CD-ROM (18) for storing various geographic information related to road conditions, wherein the plurality of links (L ₁ , L ₂ , L ₃ , L ₄ ) forming an intersection are oriented in one direction. A step of defining sequentially and a link from one link (L ₁ , L ₂ , L ₃ , L ₄ ) to each link (L ₁ , L ₂ , L ₃ , L ₄ ) sequentially defined in the defining step. Sequentially entering / part into one code.

Description

Data storage method of vehicle auto navigation system

The present invention relates to a vehicle autonomous navigation system, and more particularly, in storing information in a link for defining a road, a vehicle for reducing the memory for storing data by storing data for one link as a code. The present invention relates to a data storage method of an automatic navigation system.

In recent years, the increasing number of vehicles on the road has caused very large traffic congestion. Although traffic congestion is more serious in large cities, financial resources are inevitable to expand the road network due to the astronomical rise in land prices. Therefore, as a more practical solution, attempts have been made to use the existing road network as it is, but to efficiently control traffic flow using an artificial intelligence system. As one way, a car-navigation system is used. This is under development. The most basic function of the vehicle navigation system is to track the location of the vehicle in operation and accurately display it on the road map.Auxiliary functions are to provide useful information about the traffic situation of other roads, gas stations, and public offices. There is a function.

Such a vehicle navigation system employs a plurality of sensors and uses the information provided from the stand-alone navigation system to track the location of the vehicle, a navigation system using the position information provided by the GPS satellites, and both. The hybrid navigation system, which is combined with the system, is classified roughly, and the auto navigation system for a vehicle described below represents a hybrid navigation system.

1 is a schematic control block diagram of a conventional auto navigation system of a vehicle. As shown in Fig. 1, the conventional vehicle autonomous navigation system is largely divided into a main body and a monitor 12. The main body receives radio waves simultaneously from three different global positioning system satellites. Processes the longitude and latitude data received by the GPS receiver 15 which calculates the longitude and latitude of the point, the CD-ROM 18 and the GPS receiver 15 which store road map data. Key operation unit 14 for receiving a selection signal for the reduction and enlargement of the map screen from the control unit 11 and the user to project and map the map data stored in the CD-ROM (CD-ROM) 18 to the current position of the vehicle; The sensor unit 13 is composed of an azimuth sensor and a vehicle speed sensor that detects a moving direction and a speed of the host vehicle to correct a display error with respect to GPS data. It is made of a driving power supply to the power switch and to block 17.

The traffic regulation data storage method of the conventional vehicle automatic navigation system configured as described above will be described with reference to a0b0c and 0bb0c of FIG. In FIG. 2, 0ba0c is a diagram showing a traffic regulation situation at an actual intersection, and 0bb0c is a diagram showing a link and a road at an actual intersection. As shown in the figure, the intersections form four distances, and the four distances forming the intersections are indicated by links in a clockwise order relative to true north (upper side in the drawing). The road to link 1 (L ₁ ), the road located on the right side link 2 (L ₂ ), the road located on the lower side link ₃ (L ₃ ), the road located on the left side link 4 (L) ₄ ). At this time, the first link (L ₁ ) is rod 1 (N ₁ ) and rod 5 (N ₅ ), the link ₂ (L ₂ ) is rod ₂ (N ₂ ) and rod ₅ (N ₅ ), 3 The _third link (L ₃ ) is defined as the third load (N ₃ ) and the fifth load (N ₅ ), the fourth link (L ₄ ) is defined as the fourth load (N ₄ ) and the fifth load (N ₅ ).

The conventional method for inputting the traffic regulation data shown in FIG. 2 into the CD-ROM having the intersection defined as follows is as follows. For each link (L ₁ , L ₂ , L ₃ , L ₄ ), enter the pass / fail for all links (L ₁ , L ₂ , L ₃ , L ₄ ), including yourself. That is, the traffic regulation status of the _first link (L ₁ ) is input as follows. Link 1 (L ₁ ) to link 2 (L ₂ ) is not allowed to pass (ie left turn), link ₁ (L ₁ ) to link ₃ (L ₃ ) is a passerby (ie, straight), 1 In link ₁ , link 4 (L ₄ ) is a passerby (ie, right turn), and in link ₁ (L ₁ ), link ₁ (L ₁ ) is not allowed to enter (ie, U-turn). In this way, 16 codes are used to input the traffic control situation for the 4th street because the traffic control situation of link ₂ , ₃ , ₄ (L ₂ , L ₃ , L ₄ ) must be entered. To sum it up, it takes 2 ⁿ codes to enter the traffic regulation for the intersection. For this reason, there was a problem that it is difficult to enter the traffic control situation, and also because the manufacturing cost is increased because a lot of memory is required. And it was difficult to verify the input data.

The present invention has been made to solve such a problem, and its object is to save traffic regulations for each road constituting an intersection in a single code, which requires a small amount of memory and facilitates verification of input data. It provides a way to store data on the system.

1 is a schematic control block diagram of a general vehicle auto navigation system.

0ba0c and 0bb0c of FIG. 2 are diagrams for showing a data storage method according to the present invention. FIG. 0ba0c is a diagram showing road conditions, 0bb0c is a diagram defining intersections, and FIG. 3 is a diagram defining a road order of each road. .

* Explanation of symbols for main parts of the drawings

11 control unit 12 monitor 13 sensor unit 14 key operation unit

18: CD-ROM L ₁ , L ₂ , L ₃ , L ₄ : Link N ₁ , N ₂ , N ₃ , N ₄ , N ₅ : Node

In order to achieve the above object, a data storage method of an autonomous vehicle navigation system according to the present invention is a vehicle autonomous navigation system having a CD-ROM storing various geographic information related to road conditions, wherein a plurality of links forming an intersection are arranged in one direction. And a step of sequentially inputting one or more passages to / from each link sequentially defined in the definition step in one link in one code.

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

First, FIG. 1 is a view showing a schematic configuration of a general vehicle automatic navigation system to which the present invention is applied, and FIGS. 2 and 3 are diagrams showing traffic control conditions and intersections with links and nodes at actual intersections. Since the above is omitted, the same reference numerals will be given to the same elements.

It is a feature of the present invention to enter all traffic restrictions for one link into a single 8-digit code. At this time, passability is indicated by 0b00c, U-turnable is indicated by 0b10c, and passability is indicated by 0b20c.

3 will be described with reference to the seat of the code. As shown in the figure, the digits of the codes are sequentially written in the clockwise direction based on the link to be input, and the user's own passage (ie, U-turn) is input at the positions corresponding to the number of intersections. Whether this will now be described relative to the link (L ₁₎ # 1, passes to the # 2 link (L ₂₎ which is located on the right side of the link (L ₁₎ 1 (left) is written into the first digit of the code, 3 Whether the traffic to the link (L ₃ ) (going straight) is written in the second digit of the code, and whether the traffic to the link (L ₄ ) ₄ (right) is written in the third digit of the code, and to the link ₁ (L ₁ ) The pass (U-turn) is written in the fourth digit of the code. The remaining 5th to 8th digits are not written or treated as 0b00c because the link does not exist because there is no actual road. The code value indicating the traffic regulation of the _first link (L ₁ ) is 0b200200000c. If it is solved, the left turn and the U turn are impossible, and the right turn and the straight turn are possible.

The traffic control code of link 2 (L ₂ ) is 0b000100000c. To explain this easily, in link 2, it is possible to go straight, turn right, turn left and turn U. The traffic regulation code for link 3 (L ₃ ) is 0b200200000c. It is not possible to turn left and turn U, go straight and turn right. The traffic regulation code for link 4 (L ₄ ) is 0b000100000c. It is possible to go straight, turn right, turn left and turn U.

The reason why the number of digits in the code is eight is because there is no more than 9 in the intersection of Korea. If there is more than 9, you can increase the number of digits accordingly.

As described above, the data storage method of the automatic navigation system of the vehicle according to the present invention is easy to verify the coded content and code because it is coded using one code per link when inputting the traffic control situation of the intersection. There is an advantage that the space for storing it is reduced.

Claims (2)

In the vehicle automatic navigation system having a CD-ROM storing various geographic information related to the road situation, Sequentially defining a plurality of links forming an intersection in one direction; And sequentially entering a pass / fade from each link to each link sequentially defined in the defining step in a single code. The method of claim 1, Defining the links sequentially in one direction, The order is given in clockwise direction based on the position on the true north side. In the step of sequentially entering the pass A / B in a single code, the vehicle auto-navigation system, characterized in that sequentially input from the first of the code from the link in the clockwise first of the reference link to the reference link How to store your data.