JPH0721809B2 - CAD device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention is suitable for the case where a design is made using the following drawings.
Regarding D device.

(Prior Art) Conventionally, when a layout design, equipment design, wiring / piping construction design, etc. are performed in this type of CAD device, the operator can use the following method to construct the building diagrams and maps below. It was entered.

In other words, the so-called building diagram or map is placed on the tablet, the so-called digitizer method in which each part of the diagram is specified by the digitizer and stored as vector information, and the building diagram or map as shown below is read by the image scanner. This is a so-called image scanner method in which the image information is converted into vector information and stored.

(Problems to be solved by the invention) However, since these methods store the following figures as vector information, they can be easily enlarged / reduced after that, but in the former digitizer method, it takes much time to input them. In the latter scanner method, there is a problem that distortion is likely to occur in the drawing when converting image information into vector information, and the degree of deformation increases when this is enlarged or reduced.

It is an object of the present invention to, in a CAD device of this type, input a building diagram or a map, which will be shown below, in a short time and obtain an accurate and optimum scale shown below.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a means for displaying the lower figure read by an image scanner as it is on a screen and a lower figure displayed on the screen. Means for inputting dimensions to each part, means for comparing the input dimensions with the dimensions shown in the figure below read by the image scanner, and means for enlarging / reducing each part in the figure below on the screen so as to match the input dimensions. It is characterized in that it further comprises means for superposing and displaying a character or figure for which a vector or code has been separately input, on the lower figure on the screen after the enlargement / reduction.

(Operation) According to such a configuration, since the image scanner reads the following figure, it can be performed quickly and easily,
Moreover, based on the entered dimensions, according to the prescribed scale,
Since each part of the lower figure on the screen is enlarged / reduced, the enlargement / reduction processing is relatively easy, and the lower figure having an accurate and optimum scale can be obtained.

(Embodiment) FIG. 1 is a hardware block diagram showing an embodiment of a CAD device according to the present invention.

As shown in the figure, this CAD device is
In addition to the existing equipment consisting of an inch CRT 2, a keyboard 3 and a mouse 4, an AI scanner 5 and an AI electrostatic plotter 6 are newly added.

FIG. 2 is a flow chart showing the configuration of the control program built in the personal computer 1, and the operation of the apparatus of this embodiment will be systematically described below with reference to this flow chart.

In the case of performing layout design, equipment design, wiring / piping construction design, etc., in this embodiment, the AI scanner 5 scans a building diagram and a map which are the drawings below.

Then, the personal computer 1 reads the image information corresponding to the figure below through the AI scanner 5 (step 201).

After that, the read below figure is displayed as it is on the screen of the 20-inch CRT 2 (step 202).

At this time, unlike the conventional scanner method, the image information is displayed as it is on the screen of the 20-inch CRT 2 without being converted into vector information.

Next, the operator uses the keyboard 3 and the mouse 4 to input the dimensions of the respective parts shown in the figure below on the screen. Then, these dimensions are read by the personal computer 1, and the personal computer 1 traces the line segment to recognize the dimension values (step 20).
3).

After that, the personal computer 1 automatically enlarges / reduces the following figure based on the size so as to meet the specified scale, and corrects it to proper image information (step 204). For example, the input image information has a dimensional error due to expansion and contraction of paper, an error of a scanner, or the like. As a method of enlarging / reducing, the correct dimension is input from the outside to the raw dimension between the two points of the image information captured in the personal computer 1 through the AI scanner 5, and the ratio between the raw dimension and the correct dimension. Can be easily realized by enlarging / reducing the image data being displayed to the correct size by determining

Then, based on the corrected image information, 20-inch CR
On the T2 screen, the following figure after enlargement / reduction is displayed with the optimum scale (step 205).

As a result, it is possible to obtain a lower diagram having an accurate and optimum scale.

After that, the operator uses the keyboard 3 and the mouse 4 to delete unnecessary portions and edit data such as adding data.

Then, the image information corresponding to the figure below is the keyboard 3
It is appropriately edited by an instruction input via the mouse 4 or the mouse 4, and this is displayed on the screen of the 20-inch CRT 2 (step 207).

Then, when an instruction to end editing is given (step 208Y
ES), then normal CAD operation becomes possible.

That is, when a character or figure is input by a vector code via the keyboard 3 or the mouse 4, these are sequentially displayed on the completed lower diagram (steps 209, 21).
0).

In this way, it is possible to write the prescribed characters, symbols, and figures necessary for building design, etc. on the diagram below.

Then, when a print command is given (step 211YE
S), a completed drawing in which these characters, symbols and figures are overlaid on the lower drawing is printed out from the AI electrostatic plotter 6 (step 212).

That is, in the case of equipment design, it is possible to properly arrange the devices on the lower diagram or to wire the devices.

As described above, according to the apparatus of this embodiment, the following figure is read through the AI scanner 5, and this is read with an optimum scale.
It can be displayed on the CRT screen, edit it as needed to complete the figure below, and if it is a facility design, arrange the equipment and wire between the equipment, etc. and confirm it on the screen or It is possible to print out according to.

Although the personal computer 1 is used in the above embodiments, an EWS, a minicomputer, a general-purpose computer or the like may be used instead of the personal computer 1, and the output device is not limited to the electrostatic plotter 6 and other A raster type plotter such as a laser beam plotter or a liquid crystal plotter can also be used.

Further, in the present embodiment, it was applied to the equipment design in the building,
It can be applied to indoor layouts using maps, wiring and piping work, and mechanical design using existing drawings.

[Effects of the Invention] As is apparent from the above description of the embodiments, according to the present invention, when designing is performed using the following figure in this type of CAD device, the input time in the following figure is shortened, and more accurately and optimally. It is possible to reliably obtain the figure below with various scales.

[Brief description of drawings]

FIG. 1 is a block diagram showing the electrical hardware configuration of the apparatus of this embodiment, and FIG. 2 is a flow chart showing the software configuration. 1 ... PC, 2 ... 20 inch CRT, 3 ... keyboard, 4 ... mouse, 5 ... AI scanner, 6 ... AI electrostatic plotter.

Claims (1)

[Claims] 1. A means for displaying the following figure read by an image scanner on the screen as it is, a means for inputting dimensions to each part of the following figure displayed on the screen, the input dimensions and the reading by the image scanner. Compare the dimensions in the figure below and enlarge / reduce each part in the figure on the screen to match the entered dimensions, and enter a vector or code separately on the figure below on the screen after the enlargement / reduction. A CAD device comprising: means for displaying characters and figures that are overlapped and displayed.