JP2753226B2 - Drawing management method and apparatus - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a drawing management method and apparatus for digitizing and managing facility drawings such as water and gas piping systems, electricity and telephone wiring systems. [Prior Art] Conventionally, situation management of piping such as water supply, gas, electricity, telephone, and wiring systems has been performed using drawings drawn on paper or polyester film. At this time, if a change occurs in the facility, it is necessary to correct the drawing. All drawing correction operations must be performed manually, which requires much labor and time, and has a high rate of erroneous writing. In order to solve this problem, for example, as described in Japanese Patent Publication No. 61-9667, it has been proposed to convert facility drawings into digital information and manage them. In order to manage and convert facility drawings into digital information, a large number of facility drawings (topographic maps, system maps,
(E.g., a symbol diagram) is displayed on a display device on a monitor. The work of correcting the drawing is also displayed on the display device. [Problems to be Solved by the Invention] Facility drawings are usually stored in a file device at a predetermined scale. In order to display the facility drawing on the display device, it is common to display the facility drawing in a reduced size due to the size of the display screen of the display device. However, the size of the facility drawing stored in the file device often differs depending on the user, and the reduction ratio changes. On the other hand, when managing the facility drawings, it is necessary to enlarge the parts and display them on the display device. The size of the partial enlargement is an arbitrary size, and the enlargement ratio for display also changes. Incidentally, when managing facility drawings, it is required to grasp the actual distance relationship while watching the monitor display of the display device. For example, when digging a water pipe, it is necessary to determine the construction procedure after grasping where it is buried from the road. In such a case, it is conceivable to display the drawing scale. However, if the enlargement ratio or reduction ratio of the display of the display device changes arbitrarily, it becomes difficult to grasp the actual distance relationship. For example, if the display enlargement ratio or reduction ratio becomes “53”, scale conversion becomes difficult. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a drawing management method and apparatus capable of quickly grasping an actual scale while watching a monitor display of a display device. [Means for Solving the Problems] The feature of the present invention is to determine the screen display scale factor of the facility drawing to be displayed on the display screen of the display device, and based on this screen display scale factor, the scale length and scale value of the actual distance scale. And determine
An object of the present invention is to display a facility drawing and an actual distance scale on a display device at the same time. [Operation] An actual distance scale is displayed on the display screen of the display device. The administrator can grasp the actual distance by viewing the display screen even if the display scale changes. If it is desired to measure the actual distance accurately, the facility drawing can be measured with a ruler and measured using an actual distance scale. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a configuration diagram of the facility drawing management system. Second
In the figure, the file device 203 includes, as facility drawing data, graphic data such as a topographic map and a pipe map, and attributes expressed in characters and numerical values such as a town name, a personal name, a pipe diameter, and a pipe type related to the figure. Data is stored. The graphic data is input from a drawing input device 204 which scans the drawing to obtain a gray scale, obtains a digital image and obtains coded data. The facility drawing is composed of a plurality of drawings shown in FIG. 3 (a), and each is divided to form a graphic data file. The graphic data is shown in an orthogonal coordinate system as shown in FIG. 3 (b), and its lengths X ₀ and Y ₀ in the X and Y axes are determined by the drawing size. These graphic data have a hierarchical data structure of roads, house frames and pipelines as shown in FIGS. 4 (b) to 4 (c). Such graphic data can be obtained. On the other hand, the attribute data is
6 or using a data input device 208 such as a floppy disk which can collectively input data. In order for the operator to operate the mouse 207 to display a drawing on the CRT 205, the operator first operates the mouse 207 to specify the coordinates of the operation icon on the CRT screen and to specify the corresponding drawing to be read. The central processing unit (CPU) 201 retrieves the relevant drawing data (graphic data and its attribute data) from the file device 203 and temporarily stores it in the main memory 202. Main memory 202
Functions to store a program for executing processing such as drawing data search and editing and data being processed. The drawing data on the main memory 202 is displayed on the CRT 205 after being edited by the CPU 201 in accordance with the display area of the CRT 205. The operator can know the contents of the target drawing from this display screen. By the way, it is shown in FIG.
In many cases, the CRT display area is smaller than the original drawing size shown in FIG.
The display is partially enlarged as shown in FIG. For this purpose, the coordinates of both ends of a rectangular arbitrary area are designated from the CRT display area in FIG. Specifically, a part of the relevant drawing data on the main memory 202 is enlarged / reduced and edited via the CPU 201, and the CR
Display on T205. Next, a scale display when a target drawing is retrieved from the file device 203 and the drawing data is edited and displayed on the CRT 205 will be described with reference to FIG. FIG. 1 is a diagram showing an example of a scale-scale display processing unit performed by the CPU 201. In FIG. 1, a display display surface 101 displays a mouse operation icon area 102 for searching and correcting a target drawing, a drawing display area 103 for displaying a drawing searched by mouse operation, and a scale scale of a drawing currently displayed. And a scale display area 104. The scales displayed in the scale display area 104, that is, the actual distance scale L _D and the drawing size scale L _S are processed according to the following procedure. By using the mouse 207 in FIG. 2, a cursor that moves in one-to-one correspondence with the operation of the mouse 207 is moved to the icon area 102 on the display screen 101, and a target drawing search icon is selected and instructed. This selection command indexes the corresponding drawing data from the file device 203 via the CPU 201 and temporarily stores it in the main memory 202. Next, in the CPU 201, the display area determination unit 105 determines the width of the drawing display area 103 in the X-axis or Y-axis direction on the display screen. Next, the scale calculator 106 calculates the scale of the drawing with respect to the display area by the following equation. With this formula, the scale factor when arbitrarily enlarging / reducing is obtained. Here, n: scale ratio ΔX, ΔY: width of current display area in X direction or Y direction. _Xc , _Yc : X-direction width or Y-direction width of the initial display area. The scale simultaneous display item selection unit 107 is the mouse 2 shown in FIG.
A selection is made as to whether or not to display the two scales of the actual distance scale L _D and the drawing size scale L _S specified by the operation of 07 at the same time, or to display only one of them. If there is a scale display request, the actual distance scale scale and the drawing size scale are determined by the actual distance scale selecting unit 109 and the drawing size scale selecting unit 110 according to the scale item. An actual distance scale scale definition table 109 and a drawing dimension scale scale definition table 111 are prepared in advance corresponding to the scale of the display screen.
The corresponding scale is indexed from among them. This scale is edited by the display editing unit 112 for the definition area of the scale display area 104 and then displayed on a scale. In this embodiment, the method of selecting the actual distance scale L _D and the drawing size scale L _S from the corresponding scale definition has been described. However, the scales can be similarly calculated from the scale. In addition, displaying the scale at the same time as the scale is also implemented in the present invention. FIG. 6 is an example in which the scale is displayed in the scale display area 104 of FIG. FIG. 6 (a) shows the actual distance scale and the drawing size scale simultaneously displayed.
Figures (b) and (c) show only one of each. The display can be switched or deleted depending on the purpose of use. Although the scale is displayed in this manner, the actual distance scale is displayed, so that the actual distance of the facility can be quickly and accurately obtained. [Effects of the Invention] As described above, the present invention displays the real distance scale on the display screen, so that the scale can be easily grasped even if the scale is arbitrarily changed by enlarging or reducing the drawing.
Therefore, the actual distance can be quickly and accurately obtained on the drawing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a main part of an embodiment of the present invention, FIG. 2 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 3 is stored in a file device. FIG. 4 is a diagram showing the hierarchical structure of graphic data, FIG. 5 is a diagram showing the relationship between enlargement and reduction of the drawing and the CRT display, and FIG. It is a figure showing an example. 101 ... display display surface, 103 ... drawing display area, 104 ...
Scale display area, 105: display area determination unit, 106: scale ratio calculation unit, 107: scale simultaneous display item selection unit, 108: real distance scale selection unit, 201: CPU, 202: main memory, 203
… File device, 204… Drawing input device, 205… CRT, 206…
Keyboard, 207 ... mouse.

Claims (1)

(57) [Claims] A drawing management method for digitalizing and managing drawing information of facility drawings and displaying a desired facility drawing on a display screen of a display device with a predetermined size by enlarging or reducing the drawing. Obtain the scale of the screen display of the facility drawing that is displayed in a reduced scale, determine the actual distance scale based on this scale of the screen display, where only the value of the highest digit of the scale scale is a value other than zero, and determine this actual distance scale. Is displayed on the display device simultaneously with the facility drawing. 2. A drawing management method for digitalizing and managing drawing information of facility drawings and displaying a desired facility drawing on a display screen of a display device with a predetermined size by enlarging or reducing the drawing. Obtain the screen display scale of the facility drawing that is displayed in a reduced scale, and determine the actual distance scale and drawing dimension scale in which only the value of the highest digit of the scale scale takes a value other than zero based on this screen display scale, A drawing management method, wherein one or both of the actual distance scale and the drawing size scale are displayed on the display device simultaneously with the facility drawing. 3. A display device having storage means for storing drawing information of facility drawings as digital information, and a display screen of a predetermined size for displaying drawing information of a desired facility drawing among the drawing information stored in the storage means. Operation input means for instructing and inputting an operation command for displaying the facility drawing on the display device; and a scale ratio for obtaining a screen display scale ratio when displaying the facility drawing on the display device in an enlarged or reduced manner. Calculating means, real distance scale calculating means for determining a real distance scale in which only the value of the most significant digit of the scale scale is a value other than zero based on the screen display scale, and actual distance scale calculated by the real distance scale calculating means. A drawing management device, comprising: display editing means for displaying a distance scale on the display device simultaneously with the facility drawing. 4. A display device having storage means for storing drawing information of facility drawings as digital information, and a display screen of a predetermined size for displaying drawing information of a desired facility drawing among the drawing information stored in the storage means. Operation input means for instructing and inputting an operation command for displaying the facility drawing on the display device; and a scale ratio for obtaining a screen display scale ratio when displaying the facility drawing on the display device in an enlarged or reduced manner. Calculating means; first scale calculating means for determining an actual distance scale in which only the most significant digit of the scale takes a value other than zero based on the screen display scale; and scale scale based on the screen display scale. A second scale calculating means for determining a drawing dimension scale in which only the most significant digit takes a value other than zero, and an actual scale determined by the first and second scale calculating means. Away scale and drawing drawing management system either or both dimensions scale equipped with a display editing means for displaying on the display device simultaneously with the facility drawings.