JP2002073691A - Cad system for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CAD system for a building which can easily and quickly draw a new constituting element and also can improve the reuse factor of a prepared drawing. SOLUTION: This CAD system requests a system user to input the type of his/her desired constituting element to be drawn (201), to input a reference line (202), to input the position of the desired constituting element on the basis of the reference line (203), to input the size of the constituting element (204) and then draws the constituting element of the said type having the inputted size at the position of a layer associated with the constituting element in accordance with an expression rule (205).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD system for a building, which supports the creation of a plan view of a building by using a computer, and in particular, can easily draw new components in a short time. Also, the present invention relates to a CAD system for buildings that can increase the reuse rate of created drawings.

[0002]

2. Description of the Related Art Conventionally, in a CAD system for a building, in order to make effective use of accumulated data and to efficiently create a drawing, a part of a previously created drawing is modified to create a new drawing. Attempts are being made frequently. In this case, in the conventional method, a layer for drawing a building element such as a wall or a door frame is determined in advance, and an expression rule for the component is also determined in advance. A standard specification document describing the correspondence between layers and a rule book describing expression rules of the components are created in advance, and when drawing new components, the standard specifications document and the rule book are always referred to. Then, the components are drawn on the predetermined layer in accordance with the predetermined expression rules.

When a new drawing is created by modifying a drawing created in the past, the components to be modified from among the drawings are drawn by referring to the standard specification and the rule book. In addition, the user can easily find the layer included in the drawing, and can easily understand how to modify the components in the drawing.

[0004]

However, in the above-mentioned conventional method, each time a new component is drawn, the layer or the component in which the component is drawn is referred to by referring to the standard specification and the rule book. Checking the rules puts a lot of burden on drawing creators, and drawing creators took a lot of time to draw new components.

[0005] Further, even if the correspondence between the components and the layers and the rules for expressing the components are confirmed with reference to the standard specification and the rule book, the expressions defined in the predetermined layers are determined. Drawing the components according to the rules required complicated operation of the building CAD system, and the drawing creator had to be proficient in operating the building CAD system.

[0006] Further, even if an expert creates a drawing by referring to the standard specification and the rule book and confirming the expression rules of the layers on which the constituent elements are drawn and the constituent elements, an inappropriate Reusing drawings is difficult because components can be placed on layers,
The cost of creating the drawings was high. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the related art, and can easily draw a new component in a short time, and can increase a reuse rate of a created drawing. It is an object of the present invention to provide a CAD system for buildings capable of performing the following.

[0007]

In order to solve the above-mentioned problems, a building CAD system according to the present invention provides a building CAD system that supports creation of a building drawing composed of a plurality of layers in which building components are drawn. In a CAD system, standard specification storage means for storing correspondence between building components and layers on which the building elements are drawn, expression rule storage means for storing expression rules for the components, A component information input requesting unit for requesting input of information including a type, a size, and a position of an element, and, based on the standard specification storage unit and the expression rule storage unit when the user has input the information, Component drawing means for drawing the type of component having dimensions in the position of the layer corresponding to the component according to the expression rule; Characterized by comprising a.

Therefore, in the CAD system for a building according to the present invention, the component information input requesting means requests the user to input information including at least the types, dimensions and positions of the building components, When the user inputs the information, the component drawing unit associates the type of component having the dimension with the component based on the standard specification storage unit and the expression rule storage unit. In accordance with the expression rules, the drawing is performed at the position of the layer.

As described above, in the CAD system for a building according to the present invention, a user can draw a new component simply by inputting information including at least the type, size and position of the component of the building. Therefore, a new component can be easily drawn in a short time even if the user is not familiar with the operation of the building CAD system. In addition, in the drawing of a building created by repeating the above procedure, each component is drawn according to the expression rules on the layer corresponding to the component, so that the drawing reuse rate can be increased. It is possible to reduce the drawing creation cost.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a building CAD system according to the present invention is used for producing a design drawing of a building will be described with reference to the drawings. FIG. 1 is a system configuration diagram in which a building CAD system of the present invention is configured by a personal computer.

As shown in FIG. 1, a personal computer 1 includes a CPU 2, a main memory 3 for storing programs such as an OS, and other necessary information, and input / output devices such as a mouse 4, a keyboard 5, an external storage device 6, and a display 7. The external storage device 6 includes an interface circuit 8 for the device and a system bus 9 for appropriately connecting the CPU 2, the main memory 3, and the interface circuit 8.
Standard specifications indicating the correspondence between building components such as walls and door frames and layers on which the building components are drawn, and expression rules for the building components are stored.

Then, the system user operates the mouse 4, the keyboard 5, and the like to activate the component drawing program stored in the predetermined area, and executes the program by the CP.
Let U2 do it. As shown in FIG. 2, the component drawing program first requests the system user to input the type of component to be newly drawn (step 20).
1) Then, a request is made to set a reference line (step 202), and further, a request is made to input the position of the component with reference to the reference line (step 203), and the dimensions of the component are set. The user is requested to input the information (step 204), and the type of the component having the dimensions is drawn at the position of the layer corresponding to the component according to the expression rule (step 205). .

The contents of the component drawing program according to the present embodiment are as follows. First, in step 201, the display 7 displays the building components such as “wall”, “stairs”, “door frame”, and “window frame”. A list is displayed to allow the system user to select the type of component to be newly drawn. When a component is selected in step 201, the process proceeds to step 202, and requests the system user to set a reference line.

When the reference line is set in step 202,
In step 203, the system user is requested to input the position of the component based on the reference line. When the position of the component is input in step 203, the process proceeds to step 204, and the input of the dimension of the component is requested.

When the dimensions of the configuration are input in step 204, the process proceeds to step 205, where the configuration of the type having the dimensions is provided based on the standard specifications and the expression rules stored in the external storage device 6. An element is drawn at the position of the layer corresponding to the component according to the expression rule. Next, the operation of the present embodiment will be described in detail with a specific situation.

First, as shown in FIG. 3A, it is assumed that the user draws a door in a plan view on which the wall 10 is drawn, and operates the mouse 4, the keyboard 5, and the like to start the component drawing program. I do. Then, in step 201, a list of building components such as “wall”, “stairs”, “door frame”, and “window frame” is displayed on the display 7. Then, it is assumed that the system user has selected “door frame” from the list. Then
In step 202, the system user is requested to set a reference line.

Next, it is assumed that the system user operates the mouse 4 to set the reference line by going straight to the wall 10 as shown in FIG. 3B. Then, the process proceeds to step 203, and the system user is required to input a position to draw the “door frame”. Here, the system user operates the mouse 4 to move one side p2 of the wall 10 as shown in FIG.
It is assumed that the mouse pointer 11 is dragged to the other side p3 to select the wall 10 and the keyboard 5 is operated to input a distance of 200 mm from the reference line. Then, the process proceeds to step 204, and the system user
Input of the opening width of the “door frame” is required.

Then, it is assumed that the system user operates the keyboard 5 and inputs the opening width of the "door frame" to be 900 mm as shown in FIG. Then, Step 205
Then, according to the standard rule, a position 200 mm from the set reference line is set on a layer determined to draw the door frame 12 based on the standard specification and the expression rule stored in the external storage device 6. A door frame 12 having an opening width of 900 mm is drawn on the selected wall 10.

In the above procedure, the thickness of the door frame 12 is automatically set according to a standard rule. As described above, the example in which the door frame 12 can be drawn only by selecting the door frame as a component and inputting the size and position of the door frame has been described. By following the same procedure, the door frame 14 can be drawn as shown in FIG. 4, and the type, size, and position of other components of the building are input even for other components of the building. Just to draw new components,
According to the above embodiment, a new component can be easily drawn in a short time even if the user is not familiar with the operation of the building CAD system.

Further, in a building plan created by repeating the above procedure for various components, each component is drawn in a layer corresponding to the component according to the expression rules. Therefore, the drawing reuse rate can be increased, and the drawing creation cost can be reduced. The external storage device 6 corresponds to a standard specification storage unit and an expression rule storage unit, steps 202 to 204 correspond to a component information input request unit, and step 205 corresponds to a component drawing unit.

The above embodiment is an example of a CAD system for a building according to the present invention, and does not limit the configuration of the system, the types of components, and the like.

[0022]

As described above, in the building CAD system according to the present invention, the component information input request means requests the user to input information including the types, dimensions, and positions of the building components. Then, when the user inputs the information, the component drawing unit associates the type of component having the dimension with the component based on the standard specification storage unit and the expression rule storage unit. In accordance with the expression rules, the drawing is performed at the position of the layer.

As described above, in the CAD system for a building according to the present invention, the user can draw a new component simply by inputting information including the type, size, and position of the component of the building. Therefore, new components can be easily drawn in a short time, even if the user is not familiar with the operation of the building CAD system. In addition, in the drawing of a building created by repeating the above procedure, each component is drawn according to the expression rules on the layer corresponding to the component, so that the drawing reuse rate can be increased. It is possible to reduce the drawing creation cost.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an outline of a process according to the embodiment.

FIG. 3 is a state diagram of a display illustrating an operation of the embodiment.

FIG. 4 is a state diagram of a display for explaining the operation of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Personal computer 2 CPU 3 Main memory 4 Mouse 5 Keyboard 6 External storage device 7 Display 8 Interface circuit 9 System bus

Claims (1)

[Claims] 1. A building CAD system for supporting creation of a drawing of a building composed of a plurality of layers on which building components are drawn, wherein a correspondence relationship between building components and layers on which the building components are drawn is stored. Standard specification storage means, expression rule storage means for storing the expression rules of the components, and component information input request means for requesting the user to input information including at least the types, dimensions, and positions of the components of the building And, based on the standard specification storage means and the expression rule storage means, when the user inputs the information, the type of component having the dimensions is converted into a layer corresponding to the component. A building CAD system comprising: a component drawing means for drawing at a position in accordance with the expression rule.