JPH0638267B2 - Design support device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer aided design (CAD) device, and in particular, in a piping system layout design, a pipe that requires modification due to a design change after the layout is determined. The present invention relates to a piping system design support device suitable for quickly selecting a pipe.

[Background of the Invention]

In the piping system layout design, a method has been developed that automatically determines the optimum piping route that does not interfere with the position data of obstacles in the target space and the design reference data as input (Japanese Patent Application No. 58-187033). ). In this method, if the position of the obstacle is changed by design change after the route is determined once, the input data is changed and the relocation calculation of the pipe route is performed again for all routes, so it is necessary to correct it. There is a drawback in that the efficiency of design will be deteriorated because the rearrangement calculation will be performed even for the pipes that do not have.

As a method of designing the layout only for the portion related to the design change, there is a method described in JP-A-58-114265. In this method, an information module is prepared for each circuit element in designing a printed circuit board or an IC, and a flag indicating that the connection information is changed in association with the design change is provided in the information module, and the flag is referred to. Then, the circuit element whose layout needs to be changed is selected. However, in this method, there is no method for determining how the connection information is changed by the design change, that is, when the design of a certain circuit element is changed, the connection information of another circuit element is changed. Did not give. If you replace this with a piping layout,
This is equivalent to not providing a method for deciding which pipe path should be modified when a design change is made.

[Object of the Invention]

It is an object of the present invention to provide a design support device that can easily confirm a layout object that is affected when a layout is changed.

[Outline of Invention]

A feature of the present invention is that when the designated layout object is changed from among the plurality of laid out layout objects, another layout object whose layout is to be changed is influenced by the change. Means and means for displaying the obtained data of the other layout object.

Example of Invention

Hereinafter, the present invention will be specifically described. FIG. 1 shows an embodiment of the configuration of a design support device according to the present invention, for example, a piping system design support device. The image display device 3 for displaying an image on the CRT device 2 reads the coordinate data of the drawn image from the image data storage device 4. In the image data storage device 4, graphic display data of piping and obstacles is written as drawn image coordinate data. For this processing, the arithmetic processing device 5 includes an arithmetic unit 5a, a processing procedure storage unit 5b, an intermediate data storage unit 5c, an input unit 5d, and an image data output unit 5.
e, a pipe data input unit 5f, a pipe data output unit 5g, an obstacle data input unit 5h, an obstacle data output unit 5i, a design standard data input unit 5j, and a design standard data output unit 5k. The processing procedure stored in the processing procedure storage unit 5b is sequentially called by the calculation unit 5a and then executed. FIG. 2 shows an embodiment of the processing procedure in the arithmetic processing unit 5a.

The operation of the apparatus according to the present invention will be described below by following the processing procedure of this embodiment.

First, in the first step 9 of the processing procedure in this embodiment,
Design change data is input from the input device 1 and temporarily stored in the intermediate data storage unit 5c. The design change data is data for changing any of obstacle data, piping data, and design standard data. For example, the name of the obstacle to be changed and the position coordinates after the change. Next, in the second step 10,
Based on the design change data stored in the intermediate data storage unit 5c, corresponding pre-change data is read from the storage devices 6, 7, 8 and temporarily stored in the intermediate data storage unit 5c. Third
An example of the processing procedure in the second step 10 is shown in the figure. In this embodiment, an example in which the change data is obstacle data is shown. When the obstacle name (code) to be changed and a new position coordinate are input as the design change data from the input device 1, the obstacle data corresponding to the code is read from the obstacle data storage device 7 and the intermediate data is stored. It is stored in the unit 5c. FIG. 4 shows an example of obstacle data.

Next, in the third step 11, the pipes that need to be corrected due to the influence of the design change are selected from the pipes of the pipe data storage device 6 and temporarily stored in the intermediate data storage unit 5c. FIG. 5 shows an embodiment of the processing procedure in the third step 11. In this embodiment, an example in which the change data is obstacle data will be described. The pipes and obstacles are layout objects.

(1) Step 13 FIG. 6 shows an embodiment of the processing procedure of step 13. First, the position data of each pipe is obtained from the pipe data storage device 6,
The position data before and after the change of the design-changed obstacle is read from the intermediate data storage unit 5c. FIG. 7 shows an example of piping data. Next, using these position data, the calculation unit 5
In a, a calculation is performed to determine whether the piping needs to be modified due to the design change. A calculation example will be described with reference to FIG.

The partial line of the pipe is defined by the coordinates of the start and end points of the pipe and the coordinates of the bend point. In the example of FIG. 8, the points S (x _s , y _s ,
z _s ) and the line 17 connecting the point P (x _p , y _p , z _p ),
Points P and _{Q (x Q, y Q,} z Q) the connecting line 18 and the point Q and the point _{G (x G, y G,} z G) defining a line 19 connecting the. Next, it is checked whether or not each line interferes with the obstacle 16 whose design has been changed. Specifically, a line equation is created from the coordinates of the start and end points of the line.

Next, from the position data of the obstacle, the equation of each surface forming the obstacle is created.

From equations (1) and (2), it is determined that the pipe and the obstacle interfere when the straight line and the surface intersect, and this pipe is the pipe that needs to be corrected.

Further, as shown in FIG. 9, a pipe whose passable area is enlarged due to the change of the obstacle is selected. Specifically, a pipe that bypasses the obstacle 20 before the change and that does not interfere with the obstacle 21 after the change is a pipe that needs to be corrected. Whether or not the pipe is bypassing the obstacle,
Judge whether the pipe faces two or more surfaces of the obstacle. This determination is performed by using the equations (1) and (2) above.

The pipe determined to be corrected by the above procedure is set as the corrected pipe A and stored in the intermediate data storage unit 5c.

(2) Step 14 Next, the design reference data for the obstacle whose design has been changed is selected from the design reference data storage device 8 and read, and temporarily stored in the intermediate data storage unit. FIG. 10 shows an example of the design standard data. Design standard data for obstacles whose design has been changed is selected by the following procedure. That is, the name of the target of the conclusion data of each design standard data and the name of the obstacle to be redesigned are compared, and if they match, the piping system name of the condition part data and the value of the conclusion data are used as the design standard. Select as data.

Next, it is determined whether or not correction is necessary due to the design change of the obstacle in the following procedure only for the pipe having the same system name as the above system name in the pipe data storage device. First
As shown in Fig. 1, the area surrounded by the surface separated by the value of the conclusion data from the obstacle position after the design change is compared with the post-change passage prohibition area 22 and the obstacle position before the design change. An area surrounded by surfaces separated by the data value is set as the pre-change passage prohibition area 23, and the position coordinates of both areas are calculated. Further, using the pipe position coordinates and the two region position coordinates, the interference check calculation between the pipe and both regions is performed in the same manner as in step 13, and it is determined whether or not the correction is necessary. Piping 2
No. 4 interferes with the post-change prohibited area after the design change, and thus needs to be corrected. Before the design change, the pipe 25 was swirled for the prohibited area, but after the design change, it is not necessary to swirl the pipe 25, so that the pipe 25 needs to be corrected.

The pipe determined to be corrected by the above procedure is set as the corrected pipe B and is temporarily stored in the intermediate data storage unit 5c.

(3) Step 15 FIG. 13 shows an embodiment of the processing procedure of step 15.
First, priority data indicating the priority of piping arrangement is read from the design standard data storage device 8 and temporarily stored in the intermediate data storage unit 5c. First embodiment of priority data
Shown in Figure 2. Even if the piping of a certain priority is modified, the piping having a higher priority than the piping is not affected, and it is not necessary to modify it. Conversely, some pipes that have a lower priority than that pipe may include pipes that need to be modified because they are affected. Then, step 1
The pipes affected by correcting the corrected pipes A and B obtained in 3 and 14 are selected from the pipe data of the pipe data storage device by the following procedure using the priority data.

Each pipe name in the corrected pipes A and B is read from the storage unit 5c, and the priority order of these pipes is determined from the priority order data. Next, the piping data in the storage device 6 is read and the priority of this piping (hereinafter referred to as design piping) is determined.
When the priority of the design piping is lower than the priority of each of the modified piping A and B, the following procedure is performed to determine whether the design piping is restricted by the modified piping. To be restricted means, specifically, that the modified piping is an obstacle to the design piping, or that the design piping is restricted by the design standard that defines the positional relationship between the design piping and the modified piping. Is. FIG. 14 shows an example of a design standard for defining the positional relationship between pipes.

First, the corrected pipe is divided into partial lines, each partial line is approximated by a rectangular parallelepiped, and the position coordinates are calculated. At this time, the length of one side of the square of the cross section perpendicular to the line of the rectangular parallelepiped is the diameter of the pipe. If the design pipe faces two or more faces of this rectangular parallelepiped, this pipe is turning around the rectangular parallelepiped as an obstacle. That is, based on the position coordinates of the design pipe and the position coordinates of the rectangular parallelepiped, it is calculated whether or not the pipe faces two or more faces of the rectangular parallelepiped, and if so, the corrected pipe is an obstacle to the design pipe. It is determined that the pipe is connected, and this design pipe is set as the corrected pipe C and stored in the intermediate data storage unit 5c. If the above design piping is not modified piping,
Perform the following steps. First, the target of the condition data of the design standard (FIG. 14) that defines the positional relationship between the piping of the storage device 8 and the piping matches the system name of the above design piping, and the target of the conclusion data matches the system name of the corrected piping. The design standard to be searched is searched, and the value of the conclusion data is read as the minimum interval.
Next, similar to step 27, the partial line of the correction pipe is approximated by a rectangular parallelepiped. However, at this time, the length of one side of the square of the rectangular parallelepiped cross section perpendicular to the partial line is twice the sum of the radius of the pipe and the minimum interval. In addition, step 28
Similarly, if the design pipe faces two or more surfaces of the rectangular parallelepiped, it is determined that the design pipe is restricted by the design standard, the design pipe name is set as the correction pipe C, and the intermediate data storage unit Store in 5c.

The above is an example in step 11 when the design change data is an obstacle, but as another example, the design change data may be piping. Step 11 at this time
Examples of the above are shown below.

In the intermediate data storage unit 5c, the pipe name and the new position coordinate input from the input device 1 in step 9 and the position coordinate before the change read in from the storage device 6 are stored in step 10. There is. From the old and new coordinates above,
Define old and new partial lines. Furthermore, each partial line is approximated by a rectangular parallelepiped and the position coordinates thereof are calculated. If the old and new rectangular parallelepipeds are regarded as obstacles after change and obstacles before change, the pipes that need to be corrected are selected in the same manner as in steps 13, 14, and 15, and the intermediate data storage unit 5c is selected.
Can be memorized in However, in this case, the design criteria are:
Use design criteria that determine the positional relationship between pipes.

Further, an example in step 11 in the case where the design change data is the design reference data will be shown below.

The changed design reference data input from the input device 1 is stored in the intermediate data storage unit 5c. The value of the conclusion part data of the design standard shown in FIG.
An example of changing to 0 mm will be described below. In this case, the pipe to be modified is at a distance of 500 from the surface of obstacle N21A03.
HD type piping that exists within mm. First, obstacle N21A
The area surrounded by a plane 500 mm away from the surface of 03 is set as a passage prohibited area, and its position coordinates are calculated. Next, the pipe name (line code) and position data of the pipe whose system name is HD in the pipe data (FIG. 7) of the storage device 6 are read, and the partial line is defined using this data. Furthermore, using the partial line position coordinates and the prohibited area position coordinates, step 1
The interference check calculation is performed in the same manner as in 3. As a result, if the partial line interferes with the prohibited area, the pipe name is stored in the intermediate data storage unit.

In the fourth step 12 of FIG. 2, the intermediate data storage unit 5
Image data is created from the piping data stored in step c, which needs to be corrected, the design change data stored in step 9, the piping data in the storage devices 6 and 7, and the obstacle data, and is output from the image data output unit 5e. Write to the image data storage device 4. An example of step 12 is shown in FIG.
After the arithmetic processing device 5 executes this processing, the image display device 3
Reads the data specifying the coordinate value, color and brightness of the drawn image included in the image data of the image data storage device 4, and displays the image on the display device 2. In addition, the processing to create the above image data includes coordinate data conversion processing that enables (1) display according to the perspective drawing method (2) display according to the conformal projection method (3) display according to the drawing method such as the third trigonometric method. To use.

FIG. 16 shows an example of image display by the perspective drawing method. In this example, the coordinate data is converted into image data by the numerical operation according to the perspective drawing as the vertex coordinates of a right-angled polygon (set of rectangular parallelepipeds).

In this embodiment, a CRT is used as an output display device, and CR
Although the image of the pipe is displayed on the T screen, as another embodiment, it is possible to use a line printer as the output display device and output only the pipe name that needs correction.

As described above, according to the first to fourth steps of the processing procedure shown in FIG. 2, by inputting the design change data, the pipe candidates that need to be corrected are automatically selected, This is displayed on the output display device.

〔The invention's effect〕

According to the present invention, by changing a part of the layout objects that have been laid out, it is possible to easily know another layout object whose layout needs to be changed. Therefore, the efficiency of the layout change work is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a piping system design support apparatus of the present invention, FIG. 2 is a flow chart of processing by an arithmetic processing unit in that construction, FIG. 3 is a flow chart of detailed processing of the second step, and FIG. FIG. 5 is a diagram showing an example of a storage format of obstacle data, FIG. 5 is a flow chart of detailed processing of the third step of the flow of FIG. 2, and FIG. 6 is a flow chart of detailed processing of the first step. , FIG. 7 is a diagram showing an example of a storage format of piping data, FIG. 8 is a positional relationship diagram of piping and obstacles, FIG. 9 is a positional relationship diagram of piping and obstacles, and FIG. 10 is piping and obstacles. 11 is a diagram showing an example of a storage format of design standard data that defines the positional relationship of
Fig. 12 is a diagram showing the relationship between piping and design standards, Fig. 12 is a diagram showing an example of the storage format of priority data, Fig. 13 is a detailed process flow diagram of step 3 in Fig. 5, and Fig. 14 is piping. And FIG. 15 is a diagram showing an example of a storage format of design reference data that determines the positional relationship between the pipe and pipe, FIG. 15 is a detailed process flow diagram of the process of step 4 in FIG. 2, and FIG. It is a figure which shows an example. 1 ... Input device, 2 ... CRT, 3 ... Image display device, 4 ... Image data storage device, 5 ... Arithmetic processing device, 6 ...
… Piping data storage, 7… Obstacle data storage,
8 ... Design standard data storage device.

Claims (1)

[Claims] 1. A design support apparatus for designing a layout of a plurality of objects to create position data of each object and displaying each laid out object on a display device,
Using at least the position data, input means for designating and inputting a specific object whose layout is to be changed, and other objects whose layout has to be changed by changing the layout of the specific object. And a means for displaying data of another searched object on the display device.