JPH0749900A - Cad system for power circuit diagram - Google Patents

Abstract

PURPOSE:To eliminates mismatching between component data and eliminate the trouble of a cross-reference process and drawing corrections by providing cross-reference tables, file by file, updating data during a plotting process, and checking consistency on the basis of whether or not there is a paired component and its kind. CONSTITUTION:In a step 13, data on the machine number, kind, and position of an electric unit component are inputted and in a step 14, a cross-reference table corresponding to an input file among the cross-reference tables is referred to. When the data are not existent data as a result of comparison, an advance to a step 16 is made to indicates that the component is a new component on a display. When the data are the existent data, the number of components is checked in a step 17 to check mismatching among component data. When the mismatching is not found, an advance to a step 18 is made to draw the data, but when the mismatching is found, the advance to a step 19 is made to display error occurrence and the contents of the mismatching. Thus, the burden on the designer is lightened and the time for designing is shortened.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to computer aided design (CAD) systems for producing power schematics.

[0002]

2. Description of the Related Art When creating a power circuit diagram using a conventional CAD system for electric circuits, a designer first selects a drawing new creation command in step 1 as shown in FIG. Open a new file, then in step 2,
By designating a CAD drawing edit command and performing parts operations such as inputting, deleting, moving, and renaming parts, and combining various electrical parts as appropriate, a power circuit diagram is created and the CAD drawing is stored in the above file. Save to.

By the way, in the design work of a power circuit diagram, it is necessary to always maintain consistency with a pair of parts such as a relay contact and a coil. That is, for example, in the case of a relay, a single coil or a plurality of make contacts or break contacts should exist in a pair for one coil. For this reason, when creating a power circuit diagram, if a part is input, it is necessary to check if the existing name exceeds the number of points used, and if a part is deleted, if there is a paired part. It is necessary to check the number, and when a part is moved, the part is input at the move destination, while the part is deleted at the move source and the part name is changed, the new name is equivalent to the part input. On the other hand, since the old name corresponds to the component deletion, it is necessary to perform the same checks as those for the above-mentioned component input and component deletion.

Therefore, when a power circuit diagram is created using the conventional CAD system for electric circuits described above, in step 3 thereafter, operations such as inputting, deleting, moving, and renaming of parts are performed on the CAD system. As a result, the cross reference processing is performed to check the consistency of the paired parts between the part data stored in the file.

[0005]

However, in the above-described conventional CAD system for electric circuits, since the drawing process and the cross-reference process are separately performed as described above, the CAD drawing is being processed during the drawing process. Inconsistency may occur between the component data of the above. Even if such inconsistency remains after the drawing is completed, the designer cannot understand the inconsistency until the cross reference processing is performed thereafter.
Therefore, if an inconsistency is found in the cross-reference processing, there is the problem that the complicated operation of opening the file again and modifying the drawing is necessary. There is a problem in that the burden of checking the consistency during drawing creation or modification occurs and the design time increases.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a CAD system which advantageously solves the above problems. The CAD system for power circuit diagram of the present invention is shown in FIG. As is clear from the conceptual diagram, CA
D: Each file has a cross-reference table for registering the device number, type and arrangement of parts in the drawing, and every time a part operation is performed during drawing processing, the data of the cross-reference table is updated for the operated parts. The table creating / updating means 11 and the data of the cross reference table are searched every time a part operation is performed during drawing processing, and a pair of parts having the same device number as that of the operated part are searched. Consistency checking means 12 for checking the presence / absence, performing a consistency check based on the presence / absence and the type of the operated component, and outputting the result.

In the CAD system for a power circuit diagram according to the present invention, the consistency checking means 12 further indicates the arrangement of the paired parts and the operated part in the CAD drawing when the paired parts are present. It may be drawn at a predetermined position in the vicinity of the mutual parts.

[0008]

In such a power circuit diagram CAD system, the table creating / updating means 11 has a cross reference table for registering the device numbers, types and arrangements of the parts in the CAD drawing for each file, and the drawing process is in progress. Every time the parts are operated, the data of the cross reference table is updated with respect to the operated parts, and the consistency check means 12 updates the data of the cross reference table every time the parts are operated during drawing processing. Search for the presence or absence of a pair of parts that have the same device number as the operated device number, perform a consistency check based on the existence and type of the operated part, and output the result. To do.

Therefore, according to this CAD system, during the drawing process, the consistency check of the paired parts between the part data in the same file is automatically performed in real time and the result is output. Since the inconsistency is immediately found when a component operation that causes the inconsistency occurs, the inconsistency between the component data can be reliably eliminated during the creation of the power circuit diagram. It is possible to save the trouble of processing and subsequent drawing correction. Further, according to this CAD system, since the designer does not need to perform the consistency check, the burden on the designer can be reduced, and therefore the time required for the design can be shortened.

When there is the pair of parts, the consistency check means 12 further arranges the pair of parts and the operated part at a predetermined position near each other in the CAD drawing. If the drawing is performed, it is not necessary for the designer to check the layout of the paired parts and to draw them, so that the time required for the design can be further shortened.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a CAD for a power circuit diagram of the present invention.
It is a flow chart which shows the procedure of creation of a power circuit diagram as a CAD drawing and inconsistency check which one example of a system performs. The CAD system of this example is a usual CAD system for electric systems which can create a power circuit diagram. In addition, the table creating / updating function and the inconsistency checking function, which are the features of the present invention, are added.

When creating a power circuit diagram using the CAD system of this embodiment, the designer first selects a drawing new creation command and creates a new file, as in the procedure in the conventional system shown in FIG. Open, then CA
By designating the D drawing editing command, the CAD system of this embodiment is advanced to the CAD drawing editing step of step 2 in FIG. 4, and the input, deletion and movement of parts to the CAD drawing displayed on the screen of the CAD system are performed. Enable the operation of parts such as name change.

FIG. 2 shows the operation of the CAD system of this embodiment while the CAD drawing editing command is being executed.
When the component input operation is performed at a predetermined position in the AD drawing and the operation of specifying the device number and type of the electrical component is performed, the CAD system of the present embodiment first, in step 13, Indicates the device number, type, and position (for example, in the case of the make contact of the relay CR 001 in FIG. 3A, the device number "CR 001", the type "make contact", and the arrangement "line 01 of page 1") After inputting the data, in step 14, the table corresponding to the file in the cross reference table (created by adding a table identification number when opening a new file) that is provided for each file is referred to.

In the reference of the cross reference table in step 14, first, the data indicating the device number, the type and the arrangement (address) of the input parts are registered in the cross reference table corresponding to the file. Therefore, this step 14 corresponds to the table creating / updating means. Next, in this step 14, the device number is drawn in the vicinity of the input part in the CAD drawing based on the arrangement (address) data, the type of the input part is checked, and the part is designated in advance. Of a type having a pair of paired components (in this embodiment, there are only relay coils and contacts; for example, a make contact includes a predetermined number of other make and break contacts and one coil as a pair of components. In case of holding), the cross reference table is searched and the device number of the input part is compared with the device numbers of other parts on the table.

As a result of the comparison and comparison, when the same device number as the input device number is not found in the cross reference table, the part data is not existing data, and therefore the steps 14 to 15 and step 16 are executed.
Then, for example, by enclosing the device number displayed in the vicinity of the input part in the CAD drawing with a graphic of a specific shape or changing the display to a specific color as described above, the input part becomes a new part. Is displayed and the designer is warned that it is necessary to input a pair of parts. If the input part is not of a type having a pair of parts, the above-mentioned respective data of the input part are registered in the cross reference table, and the device number is provided near the input part in the CAD drawing. Only by drawing, the processing of the part in step 14 is completed, and the input of the next part is awaited.

On the other hand, as a result of the comparison and comparison in step 14, if the same device number as the device number of the input part already exists in the cross reference table, the device number of the input part in the cross reference table is further added. By checking the number of parts having the same device number as, the inconsistency between the parts data is checked. That is, in this embodiment, it is determined whether or not a coil having the same device number is doubly registered, or a coil having a certain device number has more than a predetermined number of contacts having the same device number. To check.

As a result of the above check, if there is no inconsistency between the component data, that is, in this embodiment,
If there is no double registration of the coil or registration of more than the specified number of contacts, proceed from step 14 to step 15 and step 17 to step 18, and cross reference based on each data in the cross reference table. Data is drawn. In drawing this cross-reference data, the address of the corresponding part is drawn in the vicinity of the input part, and the address of the above-mentioned part is drawn in the vicinity of the corresponding part. Draw in.

That is, the CAD system of this embodiment is
For example, as shown in FIG. 3A, on page 1 in the CAD drawing, the make contact of the relay of the device number CR 001, the break contact of the relay of the device number CR 002, and the coil of the relay of the device numbers CR 003 and CR 004. Is drawn and the CA
When the data of those parts are registered in the cross-reference table corresponding to the D drawing, as shown in FIG. 3B, the line 20 of page 12 in the CAD drawing.
When the make contact of the relay CR 003 is input to, the address <1-1> of the coil of the relay CR 003 (line 01 of page 1) is drawn under the figure of the make contact of the line 20, and the figure As shown in (a), a at the position near the right side of the coil figure of the relay CR 003 on line 01 of page 1
In the (Make contact) column, enter the address of the above make contact 12
If you input the break contact of the relay CR 004 to line 21 of page 12 as shown in Fig. 3 (b) and draw a -20, under the graphic of the break contact of line 21,
Coil address of relay CR 004 <1-2> (Page 1
Line 02) of the relay CR 004 on line 1 of page 1 and draw the line 02) of the coil on the right side of the figure of the coil of relay CR 004 on page 1 Draw the contact address 12-21.

Furthermore, when the parts shown in FIG. 3A are registered, as shown in FIG.
When you input the coil of relay CR 002 to line 20 of page 12 in the D drawing, the break contact of relay CR 002 will be displayed in the column of b (break contact) near the right of the coil shape of line 20. Addresses 1-2 are drawn, and as shown in Fig. 3 (a), page 1 line 02 relay CR
The address <1-2> of the coil (line 02 of page 1) is drawn under the figure of the break contact of 002, and as shown in FIG. 3 (b), on line 21 of page 12,
When you input the coil of relay CR 001, the address 1-1 of the make contact of relay CR 001 (line 01 of page 1) will be displayed in the a (make contact) column near the right side of the coil figure on line 21. And draw the address 12-21 of the above coil under the figure of the make contact of the relay CR 001 on line 01 of page 1.

On the other hand, as a result of the check in the above step 14, if there is a mismatch between the component data, that is, in this embodiment, the coil is double-registered and the number of contacts exceeds the predetermined number. In this case, the process proceeds from step 14 to step 15 and step 17 to step 19 to display and output that there is an input error in the vicinity of the input component and the content of the mismatch, for example, the number of contacts is exceeded. . And above step 16, step 18 and step
After the output or drawing in 19, the processing of the part is finished, and the input of the next part is waited. Therefore, step 14 above
-19 correspond to the consistency check means.

Even when the CAD system of this embodiment is used to delete, move, or change the name of an electrical component, this CAD system is used to input the component every time the designer operates the component. Similarly to the case, the data of the cross reference table is updated for the operated part, the data of the cross reference table is searched, and a pair having the same device number as the device number of the operated part is created. The presence / absence of the following component is checked, the consistency check is performed based on the presence / absence and the type of the operated component, and the result is output.

As described above, according to the CAD system of this embodiment, during drawing processing, the consistency check of the paired parts between the part data in the same file is automatically performed in real time and the result is obtained. Since the data is output, the mismatch is immediately found as soon as the designer performs a component operation that causes a mismatch, so the mismatch between the component data can be reliably eliminated during the creation of the power circuit diagram. It is possible to save the trouble of cross-reference processing after drawing creation and subsequent drawing correction. Further, according to this CAD system, since the designer does not need to perform the consistency check, the burden on the designer can be reduced, and therefore the time required for the design can be shortened.

Further, according to the CAD system of this embodiment, when there is a pair of parts, the arrangement of the pair of parts and the operated part is set at a predetermined position near each other in the CAD drawing. Since it is drawn, the designer does not need to check the arrangement of such paired parts and draw
The time required for design can be further shortened.

Although the present invention has been described above based on the illustrated example, the present invention is not limited to the above example. For example, a process corresponding to the parts table creating means or a process corresponding to the inconsistent parts checking / displaying means. The specific contents of each step can be changed as necessary within the scope of the invention described in the claims.

[0025]

Thus, the CAD for the power circuit diagram of the present invention
According to the system, as soon as the designer performs a component operation that causes inconsistency, the inconsistency is immediately identified, so that inconsistency between component data can be reliably eliminated during the creation of the power circuit diagram. Therefore, the trouble of cross-reference processing after drawing creation and subsequent drawing correction can be saved.
Further, according to this CAD system, since the designer does not need to perform the consistency check, the burden on the designer can be reduced, and therefore the time required for the design can be shortened.

When the pair of parts are present, the consistency check means further draws the arrangement of the pair of parts and the operated part at a predetermined position near each other in the CAD drawing. Since it is not necessary for the designer to check and draw the arrangement of such paired parts, the time required for the design can be further shortened.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a configuration of a CAD system for a power circuit diagram of the present invention.

FIG. 2 is a flow chart showing a procedure of creating a power circuit diagram as a CAD drawing and performing a mismatch check performed by an embodiment of the power circuit diagram CAD system of the present invention.

3 (a) and 3 (b) are explanatory views showing an example of a power circuit diagram created by the system of the above embodiment.

FIG. 4 is a flow chart showing a procedure of a CAD diagram inconsistency check performed by a designer who uses a conventional CAD system for electrical systems.

[Explanation of symbols]

 11 Table creation / update means 12 Consistency check means

Claims (2)

[Claims] 1. A cross reference table for registering device numbers, types and arrangements of parts in a CAD drawing is provided for each file, and each time a part is operated during drawing processing, the cross reference relating to the operated part is provided. The table creating / updating means (11, 14) for updating the data of the table, and the data of the cross reference table are searched every time a part operation is performed during drawing processing, and the device number of the operated part is the same. Consistency check means (12, 14 to 19) that checks the presence or absence of a paired part having a device number, performs a consistency check based on the presence or absence and the type of the operated part, and A CAD system for power circuit diagrams. 2. The consistency check means (12) further arranges the paired parts and the operated part in the vicinity of each other in a CAD drawing when the paired parts are present. The CAD system for a power circuit diagram according to claim 1, which is drawn at a predetermined position of.