JPS63254564A - Drawing controller - Google Patents

Abstract

PURPOSE:To find a real distance on a drawing speedily and accurately by generating and displaying a scale in parallel or at right angles to a specified segment on a display screen. CONSTITUTION:The reduced scale rate on the display screen is calculated from the enlargement/reduction rate between a drawing display area and the display screen on a display device, the scale is generated and displayed in parallel or at right angles to the specified segment on the drawing, and scale gradations corresponding to the calculated reduction scale rate are provided. Thus, the scale is generated and displayed in parallel or at right angles to the specified segment on the drawing and the length of the specified segment is calculated speedily. Consequently, a real distance scale and a drawing size scale are confirmed corresponding to the specified segment, so the scale need not be calculated manually from the reduction scale rate and neither miscalculation nor a scale error is caused.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drawing management device for converting facility drawings such as water and gas piping systems, electricity and telephone wiring systems into digital information and managing the drawings.

[Conventional technology]

Conventionally, the status of facilities such as water, gas, electricity, and telephone piping and wiring systems has been managed using drawings drawn on paper or polyester film. At this time, if changes occur to the facility, the drawings will need to be revised. All drawing correction work must be done manually, which is problematic in that it requires a lot of effort and time, and the rate of errors is high. In order to solve this problem, it has been proposed to manage facility drawings by converting them into digital information, as described in Japanese Patent Publication No. 61-9667, for example. To manage facility drawings by converting them into digital information, a large number of facility drawings (topographical maps, system diagrams, symbol diagrams, etc.) stored in a file device are displayed on a monitor on a display device.

Modifications to drawings are also performed by displaying them on a display device.

[Problem that the invention seeks to solve]

Facility drawings are usually stored in a file device at a predetermined scale. In order to display facility drawings on a display device, it is common to display them in a reduced size due to the size of the display screen of the display device. However, the size of the facility drawings stored in the file device often differs depending on the user, and the reduction rate changes. On the other hand, when managing facility drawings, it is necessary to partially enlarge them and display them on a display device. The size of the partial enlargement is arbitrary, and the enlargement rate for display will also change.

By the way, when managing facility drawings, it is required to grasp the actual distance relationship while looking at the monitor display of the display device. For example, when digging up water pipes, it is necessary to determine where the pipes are buried from the road and then decide on the construction procedure. In such a case, it may be possible to display the drawing scale, but if the display magnification or reduction ratio of the display device changes arbitrarily, it becomes difficult to grasp the actual distance relationship. For example, if the display magnification or reduction ratio is "53", scale conversion becomes difficult. Furthermore, it is conceivable to display a scale on the display device corresponding to the display enlargement or reduction ratio, but when measuring the length of an arbitrary line segment on the display drawing or the length with other line segments, , lack accuracy.

The present invention has been made to address the above problems.

The purpose is to provide a drawing management device that can add and display scales to arbitrary line segments on a displayed drawing while viewing the display on a monitor of a display device, and can quickly grasp distances on the drawing.

[Means for solving problems]

The above purpose is to calculate the scale rate on the screen based on the drawing display area on the display device and the enlargement/reduction ratio of the display screen, and generate and display a scale parallel to or perpendicular to the specified line segment on the drawing. , and by adding a scale graduation corresponding to the scale factor of the calculation.

[Effect]

In this on-screen scale display method, a scale can be generated and displayed parallel to or perpendicular to a designated line segment on the drawing, and the length of the designated line segment can be quickly calculated. As a result, the actual distance scale and the drawing dimension scale can be confirmed in correspondence with the designated line segment, so there is no need for humans to calculate the scale from the scale rate, and calculation errors and scale errors do not occur.

〔Example〕

Hereinafter, one 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.

In FIG. 2, the file device 203 contains, as facility drawing data, graphic data such as topographic maps and pipeline maps, names of towns and individuals related to the graphics, and pipe diameters.

Attribute data expressed by a single character or numerical value, such as pipe type, is stored. Graphic data is input from a drawing input device 204 that scans a drawing and converts it into grayscale to obtain a digital image and obtains coded data. The facility drawing is shown in Figure 3 (a
), each of which is divided to create a graphic data file. The graphic data is shown in an orthogonal coordinate system as shown in FIG. 3(b), and its lengths Xo and Yo in the X and Y axis directions are determined by the drawing size. These graphical data have a data structure layered with roads, base frames, and pipelines as shown in Figures 4 (b) to (d), and each layer is overlaid as necessary, as shown in Figure 4 (a). It can be made into graphical data such as .

On the other hand, attribute data is input using a data input device 208 such as a keyboard 206 or a floppy disk that can input data all at once.
In order to display a drawing on the C:RT 205 by operating the CRT, the operator first operates the mouse 207 to specify the coordinates of the operation icon on the CRT screen and to specify reading of the corresponding drawing. A central processing unit (CPU) 201 retrieves the corresponding drawing data (graphic data and its attribute data) from the file device 203 and temporarily stores it in the main memory 202 .

The main memory 202 functions to store programs for executing processes such as drawing data search and editing, and data being processed.

The drawing data on the main memory 202 is edited by the CPU 201 in accordance with the display area of the CRT 205, and then displayed on the CPU 201.

The operator can know the target drawing content from this display screen. By the way, the CRT display area shown in FIG. 5(b) is the same as the original drawing size shown in FIG. 5(a).
) are often smaller than those shown in Figure 5(c), so in order to understand the finer details, parts are enlarged and displayed as shown in Figure 5(c). For this purpose, the mouse 207 is used to designate both coordinate ends of an arbitrary rectangular area from the CRT display area in FIG. 5(b), and the area is enlarged or reduced to an arbitrary magnification. Specifically, main memory 2
A part of the corresponding drawing data on 02 is enlarged/reduced via the CPU 20J and displayed on the CRT 2 (>5).

Next, the scale display when a target drawing is searched from the file device 203 and the drawing data is edited and displayed on the CPU 201 will be explained with reference to FIG.

FIG. 1 is a diagram showing an example of a reduced scale display processing unit that generates a scale parallel to or perpendicular to a designated line segment on a drawing, which is performed by the CPU 201. In FIG. 1, a display surface 101 includes an operation icon area 1o2 for searching and modifying a target drawing. It is composed of a drawing display area 103 that displays drawings retrieved by mouse operation. To generate a scale parallel to or perpendicular to the specified line segment on this drawing, use the mouse 207 shown in FIG. Move the cursor that moves in one-to-one correspondence with the operation of the mouse 207 to select and command the icon for the desired drawing search.This selection command is
The corresponding drawing data is indexed from the file device 203 via U201 and temporarily stored in the main memory 202.

Next, in the CPU 201, the scale reference point display area selection unit 104 selects each parallel or perpendicular scale reference point to the designated line segment on the drawing, and selects the X-axis or Y-axis on the display screen for the drawing display area 103. Determine the direction width. Next, the scale calculation unit 105 calculates the scale of the drawing with respect to the display area using the following formula. Using this formula, the scale factor when arbitrarily enlarged or reduced is determined.

X c Y c where n: Scale rate ΔX, ΔY: X-direction width or Y-direction width of the current display area Xc, Yc: X-direction width or Y-direction width of the initial display area The scale type selection unit 106 selects the Select which of the two scales, the actual distance scale and the drawing dimension scale, specified by the operation of the mouse 207 in the figure, to be used for processing. If there is a request to display a scale for a designated line segment on a drawing, the actual distance scale selection unit 1 selects the actual distance scale scale and drawing dimension scale according to the scale item.
07° Determined by the drawing dimension scale selection section 109. An actual distance scale definition table 108 and a drawing size scale definition table 110 are prepared in advance in correspondence with the scale ratio of the display screen, and the corresponding scale is indexed from these. This scale graduation is edited by the display editing unit 111 so that the scale origin is located at the cursor position 112 of the specified line segment, and then the scale is displayed. In addition,
In this embodiment, a method of selecting the actual distance scale and the drawing size scale from the corresponding scale definitions has been described, but the scale can also be calculated from the scale ratio in the same way. Furthermore, the present invention also displays the scale factor at the same time as the scale.

FIG. 6 is a processing flow diagram for displaying a parallel or perpendicular scale to a specified line segment on a drawing. In this figure, the contents of the individual means are as follows.

First, in step S1, the user operates the mouse 207 to select the type of scale, whether the scale is to be displayed parallel or perpendicular to a designated line segment on the drawing, and selects a corresponding icon in the icon area 102. Next, in step S2, the mouse 207 is moved within the drawing display area 103 to select the corresponding broken line figure. In step S3, when the corresponding broken line is selected,
The corresponding broken line is highlighted or flickered for identification. Furthermore, in step S4, the user operates the mouse 207 to move the cursor 112 to the scale reference point that is the scale origin, and inputs the coordinates of that point.

In step S4, the slope of the corresponding broken line is calculated around the scale reference point coordinates, and the slope of the scale graduation is determined. Finally, in step S6, this scale graduation is displayed perpendicular or parallel to the corresponding broken line.

〔Effect of the invention〕

As explained above, since the scale can be generated and displayed parallel to or perpendicular to the designated line segment of the display screen of the present invention,
Even if you enlarge or reduce the drawing and change the scale rate arbitrarily, you can easily understand the actual distance scale of the figure. Therefore, the actual distance can be quickly and accurately determined on the drawing.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a scale display method according to the present invention;
Figure 2 is a diagram showing an example of the configuration of a facility drawing management system.
Figure 3 is a diagram showing the relationship between the drawing structure and graphic data files, as well as the graphic coordinate system. Figure 4 is a diagram showing the hierarchical structure of graphic data. Figure 5 is the relationship between the drawing and CRT display enlargement/reduction. FIG. 6 is a diagram showing a processing flow for displaying a parallel or perpendicular scale to a designated line segment on a drawing. 101... Display display surface, 102... Icon area, 103... Drawing display area, 104... Scale reference point display area selection section, 105... Scale rate calculation section, 106... Scale type Selection section, 107... Actual distance scale selection section, 108... Actual distance scale scale definition table, 109... Drawing dimension scale selection section. 110...Drawing dimension scale scale definition table, 11
1...Display editing section, 112...Line segment specification cursor,
113...Parallel scale, 114...Right angle scale. 201...CPU, 202...Main memory, 20
3... File device, 204... Drawing input device, 2
o5...CRT, 206...Keyboard, 207.
...Mouse, Figure 3 Figure (1) M-plane structure (b) Prisoner's seat keyaki No. 40. 7 z C

Claims (1)

[Claims] 1. A first storage means for dividing a facility drawing of the entire facility into a plurality of parts and storing them as digital information; a drawing input device for inputting divided facility drawing information to be stored in the first storage means; and the first storage. a second storage means for temporarily storing necessary divided facility drawing information out of the plurality of divided facility drawing information stored in the means or divided facility drawing information given from the drawing input device; a display device that displays part or all of the stored divided facility drawing information on a monitor; a display device that displays on a monitor a part or all of the stored divided facility drawing information; a display device that displays positional coordinates of the divided facility drawing that is temporarily stored from the first storage means to the second storage means; an operation input means for inputting the position of a divided facility drawing to be displayed on a monitor on the device and drawing correction information for modifying the divided facility drawing displayed on the display device; a digital processing device for controlling each of these means and the device; The facility digital processing device is characterized in that when displaying the divided facility drawing information on the monitor on the display device, a scale is moved and displayed on the display device parallel to or perpendicular to any specified line segment in the divided facility drawing information. drawing management device.