KR20010097220A - a method for deciding the safety sight distance of a road - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for determining a safety seizure of a road, and in particular, a first step of converting the road shape data (Modeling Information) such as terrain, road linearity, and road slope applied when designing a road using a program into 3D graphic data. Calculate the coordinates of the driver and the object by using the road shape data according to the design speed, the driver's eye level, the distance between the driver and the driver's eye, the object's eye height, the up and down line and the application time. The second step of setting the perspective line, and checking whether or not the intersection of the set perspective line and the line object forming the shape of the road in the three-dimensional image to calculate the safety drift and the perspective view of the object on the road at the driver's eye level And a third step of outputting the prescribed cigar and the calculated safety cigar through the display unit 16. It is characterized by. As described above, the present invention utilizes road shape data such as terrain, road line, and slope, which are applied during road design, to determine whether to secure a safety drift. In addition, it is easy to calculate and computerizes the schematic drawing by hand, thereby greatly reducing the manpower and time required for judging.

Description

{A method for deciding the safety sight distance of a road}

The present invention relates to a method for determining the safety seizure of a road that is important for the safety driving of a vehicle and the prevention of traffic accidents. In particular, it is possible to secure stable securities by utilizing road shape data such as terrain, road linearity, and road slope applied during road design. The present invention relates to a road safety deciding method of automatically determining whether or not a road is automatically determined.

In general, a cigar is a length at which a driver can recognize a obstacle or danger located ahead of the driving direction and apply braking to stop or avoid obstacles. It is very important for safe driving and prevention of traffic accidents.

As such, the road safety cigars, which are important factors for the safety driving of vehicles and the prevention of traffic accidents, are currently calculated by hand, and many curve elements are applied in consideration of economic, environmental and aesthetic aspects of the road design. Therefore, it is difficult to arithmetically calculate safety ciphers, and as more complex linearity is expected in the future, current manual calculation methods have limitations in calculating safety ciphers.

In addition, in the case of a linear that cannot be calculated by applying arithmetic methods, it should be calculated using the schematic method as suggested in the facility standard, but if it is calculated by hand, it can be very cumbersome and difficult. There is a problem that not only can it take place and cause an error, but also cannot guarantee or confirm the accuracy of the result.

Accordingly, the present invention has been invented to solve the above problems, easy and accurate calculation of the road safety cigars as well as anyone can easily determine whether to secure the safety cigars using a perspective view linear and poor cigars It is an object of the present invention to provide a method for determining the safety drift of roads that eliminates the causes of traffic accidents in advance.

In order to achieve the above object, the present invention, in the road safety determination method of the road, the central processing unit is input when the road shape data (Modeling Information, such as terrain or road linearity and road slope applied when the road design using the program is input) The first step of converting this into three-dimensional graphic data, and when the road shape data input in the first step is converted into three-dimensional graphic data, the design speed set according to the structural standards of the road, the driver's eye level, the center of the road and the driver A second step of setting the perspective line by calculating the driver's coordinates and the object's coordinates using the road shape data according to the distance between the object, the eye height of the object, the up and down line, and the application time; and in the second step, When the line of sight is set, the central processing unit intersects the set line of sight with the line object that forms the shape of the road. Confirmed by calculating a anjeonsigeo and is characterized in that it comprises a third step of outputting through the display and the provision sight distance calculated anjeonsigeo of specifications with a perspective view as seen the object on the road at eye level of the driver.

1 is a block diagram showing a cigar determination system to which the present invention is applied;

2 is a flowchart illustrating a method for determining a stability trigger according to the present invention;

3a to 3c is a view of the road completed using the road design program

A plan, a longitudinal, and a cross-sectional view, respectively,

4 is a view showing a three-dimensional road shape manufactured using road shape data;

5 is a view of a three-dimensional road shape and a perspective line viewed from above;

6 is an enlarged view illustrating main parts of a point where the cigar shown in FIG. 5 is disturbed;

7 is a perspective view of an object on the road at the driver's eye level.

Explanation of symbols for main parts of the drawings

11: data input unit 12: buffer

13 central processing unit (CPU) 14 key input unit

15 memory unit 16 display unit

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

FIG. 1 is a block diagram schematically illustrating a cigar determination system to which the present invention is applied, wherein a data input unit 11 to which modeling information produced using a road design program is input is a central processing unit (CPU) 13. Is connected to the central processing unit 13, and a key input unit 14 for setting data required for cigar calculation is connected.

In addition, an application program for determining a safety trigger using the road shape data input through the data input unit 11 and forming the 3D graphic data is stored in the memory unit 15 connected to the central processing unit 13. The intermediate data calculated using the application program stored in the memory unit 15 is temporarily stored in the buffer 12.

In addition, the central processing unit 13 that manages all processes can determine road safety data by applying road shape data input through the data input unit 11 to an application program stored in the memory unit 15 and visually confirm the result. Output through the display unit 16 so as to.

Next, a method for determining the stability of the road according to the present invention applied to the cigar determination system configured as described above will be described in detail with reference to FIGS. 2 to 7.

2 is a flowchart illustrating a method for determining a stabilization of a vehicle according to the present invention. When road plane, end, and cross design of a road is completed as shown in FIGS. 3A to 3C using a road design program, road shape data (Modeling Information) is obtained. The present invention utilizes road shape data such as terrain, road linearity, and slope data applied in the road design to determine the road safety seizure.

That is, when road shape data is input through the data input unit 11, the central processing unit 13 converts it into three-dimensional graphic data that can be used on a graphic program (for example, AutoCAD) (ST101 to ST102). In other words, all road shapes including auxiliary facilities are made of line objects having X, Y, Z coordinate values in three-dimensional space to form three-dimensional road shapes as shown in FIG.

As described above, when the road shape data is converted into three-dimensional graphic data and a three-dimensional road shape is formed, a perspective line is determined to calculate a cigar according to the structural facility standard of the road (ST103). That is, if the design speed, the driver's eye level, the distance between the center of the driver and the driver's eye, the object's eye level, the up and down line, and the application time are selected, the central processing unit 13 calculates the coordinates of the driver and the object using the road shape data. If you create a line object that connects the coordinates of the driver with the object, the line object becomes a perspective line for calculating the cigar.

In this way, it is possible to determine whether or not to secure a safety trigger by checking whether the perspective line connecting the coordinates of the driver and the object and the line object forming the shape of the road cross each other in three dimensions (ST104). That is, as shown in FIGS. 5 and 6, when the line objects forming the perspective line and the road shape do not cross each other in the three-dimensional space, the objects are advanced by a predetermined distance (5 m), and the line object forming the perspective line and the road shape is If they cross each other in three-dimensional space, the distance before the crossing becomes a safety trigger (ST105 to ST107).

When the safety trigger is calculated by checking the intersection of the line objects forming the perspective line and the road as described above, the central processing unit 13 shows a perspective view of the object on the road at the driver's eye level as shown in FIG. 7. The prescribed cigars and the calculated safety cigars are output through the display unit 16 so as to determine the suitability of the safety cigars in the road design in advance (ST108).

As described above, the present invention utilizes road shape data such as terrain, road line, and slope, which are applied during road design, to determine whether to secure a safety drift. In addition, it is easy to calculate and computerizes the schematic drawing by hand, thereby greatly reducing the manpower and time required for judging.

In addition, by converting road shape data into three-dimensional graphic data and accurately calculating and providing stop and overtaking, along with a three-dimensional perspective representing the road shape produced by using the road, the suitability of safety sig By judging, it prevents reconstruction due to poor design and prevents traffic accidents due to the inability to secure safety drifts.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (1)

In the road safety deciding method, the central processing unit 13 converts this into three-dimensional graphic data when the road shape data such as the terrain applied to the road design using the program, or the road shape data such as the road line and the road slope are input. When the road shape data input in the first step (ST101 to ST102) and the first step are converted into three-dimensional graphic data, the design speed, the eye level of the driver, the distance between the driver's eye center and the driver, and the object are set according to the structural standards of the road. A second step (ST103) of setting the perspective line by calculating the coordinates of the driver and the object using the road shape data by the central processing unit 13 according to the eye height, the up-down line and the application time of the second step (ST103). When the perspective line is set at, the central processing unit 13 checks whether or not the intersection of the set perspective line and the line object forming the shape of the road in the three-dimensional manner is safe. And a third step (ST104 to ST108) of outputting through the display unit 16 the prescribed and calculated safety signals of the specification together with the perspective view of the object on the road at the driver's eye level. How to determine a safety cigar.