JP3018844B2 - CAD system for electrical system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer aided design (CAD) system for creating electrical drawings.

[0002]

2. Description of the Related Art In the design work of a device for controlling a certain equipment, a circuit diagram such as an electric circuit diagram or a sequence circuit diagram, a control panel outline drawing which is a drawing of a control panel in which the circuit is to be stored, and It is essential to create a wiring diagram and other drawings between the control panel, for example, the control panel outline drawing,
Based on the circuit diagram, the layout of the electrical components such as breakers and transformers in the panel and the layout of the operating components such as lamps and push buttons, which are also electrical components, are expressed as drawings on a two-dimensional plane. Basically, the same kind of electric parts are used by the same number in the circuit diagram and the control panel outline diagram thus produced.

[0003] Conventional electrical CAD systems are generally specialized in creating circuit diagrams and wiring diagrams. Fields that can be created by mechanical CAD systems, such as control panel outline drawings, are considered very important. I haven't. Therefore, for example, when creating a control panel outline drawing using a conventional electrical CAD system, as shown in FIG.
First, in step 1, outer shapes of a control panel housing, an operation panel, and the like are created. Then, in steps 2 and 3, selection of electric components to be used and arrangement on the drawing are repeatedly performed, and all electric components are formed. When the layout is completed, in step 4, component data indicating attributes such as component names, specifications, and device numbers of all the electrical components arranged in the created CAD diagram are input as shown in Table 1, and the CAD diagram is input. A parts table as a set of the entire parts data is created, and a parts table describing the contents of the parts table is added to the created CAD drawing. Note that the creation of the component table may be omitted when the control panel outline drawing is created.

[0004]

[Table 1]

Therefore, in the conventional CAD system for electric systems, when one electric component is drawn in the drawing, the circuit diagram can be properly drawn including the symbol figure, format and other information of the electric component. In the figure, only the shape or device number of the electric component can be drawn as a figure or character, and no information can be added to the electric component itself in the outline drawing. For this reason, in the conventional CAD system for electric systems, it is difficult to check whether or not the electric components drawn in the circuit diagram and the like are correctly reflected in the control panel outline drawing.
Therefore, when checking the consistency of the electrical components between the circuit diagram and the control panel outline drawing, as shown in FIG. 7, the designer first outputs the data from the CAD system in step 5. Visually check the two types of drawings, relying on the "device number" written next to the electrical components, and check if there are any excess or deficiencies in the electrical components or differences in specifications. In 6 and 7, all the inconsistencies are corrected.

A conventional CAD system for electric systems is
Also, between the circuit diagram and the wiring diagram, the consistency check is not incorporated as a series of flow of the design work by the CAD system, and it can be executed separately as an additional function.

[0007]

However, if the designer performs a visual check as described above, the work is time-consuming because of the manual check, and the occurrence of a check error is inevitable. In addition, because it is not always possible to immediately give feedback to the drawings based on the results of the check, there may be cases where the user forgets to modify the drawings or if he or she modifies only one drawing and forgets to modify the other drawing. is there. In addition, since it is difficult to properly incorporate this consistency check into the design procedure, there is a possibility that the check may be forgotten.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a CAD system which advantageously solves the above-mentioned problems. A CAD system for an electric system according to the present invention has the concept shown in FIG. As shown, when creating a plurality of types of CAD diagrams of the electrical system, regardless of the type of drawing, the CA
The graphic data of each electric component drawn in the diagram D and the drawing position data on the drawing include attribute data of the electric component and data classified by a keyword common to the plurality of types of drawings, and the electric component. The composite part data is created by adding data representing other types of drawings in which the appears in a format unified among the plurality of types of drawings, and adding all the electrical components drawn in the CAD drawing. A component table creating means 11 is provided for collecting the component data of the component and creating a component table of the CAD drawing.

Further, the electrical CAD system according to the present invention, based on the input of the instruction indicating the end of the drawing creation, uses the common keyword as a clue to convert the composite component data between the component tables of the plurality of types of CAD drawings. A cross check is performed to determine whether or not there is an inconsistency. If there is an inconsistency, attribute data of the electric component in the composite component data of the inconsistent electric component is displayed on the screen of the CAD system. Based on the content of the inconsistency,
Based on data indicating another type of drawing in which the electrical component appears in the composite component data of the electrical component having the mismatch, the CAD diagram in which the electrical component is drawn is displayed. An inconsistent part check / display means 12 for particularly highlighting and displaying the electric part in the displayed CAD drawing based on the drawing position data on the drawing in the composite part data of the electric part having I have.

[0010]

In such a CAD system, when creating a plurality of types of CAD diagrams of an electrical system such as a control panel outline drawing and a circuit diagram, the parts table creating means 11 can be used regardless of the type of drawing.
The graphic data of each electric component drawn in the CAD drawing and the drawing position data on the drawing include, for example, data classified by a keyword common to the plurality of types of drawings such as a device number. Create composite component data by adding attribute data and data indicating other types of drawings in which the electrical components appear in a format unified among the plurality of types of drawings, and create the composite component data in the CAD drawing. The composite component data of all the drawn electrical components is collected, and a component table of the CAD drawing is created.

In this CAD system, when a designer inputs an instruction indicating the end of drawing, the inconsistent parts check / display means 12 uses the common keyword as a clue on the basis of the signal to display the plurality of types. A cross check is performed between the component tables in the CAD diagram to determine whether there is an inconsistency in the composite component data. If there is an inconsistency, the inconsistent electric component is displayed on the screen of the CAD system. The content of the inconsistency is displayed based on the attribute data of the electric component in the composite component data, and another type in which the electric component appears in the composite component data of the electric component having the inconsistency Based on the data showing the drawing of the above, the CAD diagram in which the electric component is drawn is displayed,
Further, based on the drawing position data on the drawing in the composite component data of the electric component having the mismatch, the electric component in the displayed CAD drawing is particularly emphasized and displayed.

Therefore, according to the electrical CAD system of the present invention, after a plurality of types of CAD diagrams, for example, a circuit diagram and an outline drawing of a control panel are created, when a designer inputs a signal indicating the end of the drawing creation, the system is activated. Automatically their CAD
Check the inconsistency of the electrical components between the drawings, and if there is an inconsistency, display the contents of the inconsistency, for example, differences in the number of parts, differences in specifications, etc. on the screen of the CAD system. , Where the mismatched electrical component is drawn
The AD diagram is displayed, and the electric component having the mismatch in the CAD diagram is particularly emphasized and displayed so as to prompt the correction of the drawing. Therefore, the mismatching portion can be found accurately and in a short time. The inconsistency can be corrected substantially at the same time between the drawings, and the inconsistency check can be surely executed since the inconsistency check is incorporated in the design procedure by the CAD system.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a flowchart showing an embodiment of an electrical CAD system according to the present invention and a procedure of creating a control panel outline drawing as a CAD diagram and checking a mismatch performed by a designer. ,
A component table creation function and an inconsistent component check / display function, which are features of the present invention, are added to a normal electrical CAD system capable of creating a plurality of types of electrical system drawings including a control panel outline drawing and a circuit diagram. It is configured as follows.

When creating a control panel outline drawing using the CAD system of this embodiment, the designer firstly performs a step 13 as shown in FIG. 2, for example, as shown in FIGS. 3 (a) and 3 (b).
As shown in FIG. 4, a front view and a side view showing an outer shape of a casing of a control panel, and a front view showing an outer shape of an operation panel as shown in FIG.
Further, a plan view and the like of the wiring panel to be arranged inside the casing of the control panel are created. Then, in step 14, the selection of electric components to be used and the front of the casing of the control panel as shown in FIGS. Place the selected electrical components on the drawings and side views, the front view of the operation panel, and the plan view of the wiring panel, etc. The process is repeated by returning from step 15 to step 14 until component placement is completed.

On the other hand, in the CAD system of this embodiment, the individual parts are individually selected and arranged in the step 14 or the necessary parts are arranged in the steps 14 and 15 and the next step is performed. Before proceeding to step 16, regarding the electric parts arranged in the created CAD drawing, the shape (outer shape and symbol figure) data of the electric parts and the parts The designer requests input of attribute data such as name, specification, device number, etc. and data indicating another type of drawing in which the electrical component appears, and the designer instructs the placement of the electrical component or places it on the electrical component in the CAD drawing. When an electric component is specified by moving a pointer of the like and the above-mentioned requested component data is inputted, the electric component on the drawing is added to the component data based on the arrangement of the specified electric component. Drawing position of the goods (XY coordinates of the part position of the page number and its parts drawn, scaled, etc.) to automatically adding positional data indicating. It should be noted that the data indicated by the symbol # in Table 2 is particularly important for the inconsistency check described later.

[0016]

[Table 2]

Then, when the designer inputs an instruction indicating that the arrangement of all the electric components has been completed, the CAD system automatically sets a component table as a set of the component data of the entire CAD drawing in step 16. Then, a parts table describing the contents of the parts table is added to the CAD drawing created above. Therefore, steps 14-16 above
Corresponds to a component table creation unit.

When the CAD system of this embodiment is used to create a circuit diagram as shown in FIG. 5, for example, which is housed in the control panel (this circuit diagram is usually prior to the control panel outline drawing). Created), the designer performs the same operation as described above, and this CAD system also performs the same operation as described above, automatically creates a component table of the circuit diagram, and A parts list that describes the contents of the table
It is added to the created CAD diagram.

In this way, the designer prepares and completes both the circuit diagram and the control panel outline drawing from different perspectives, with the circuit diagram as the circuit and the control panel outline drawing as the component arrangement. On the other hand, when the designer inputs an instruction indicating the end of the drawing creation, the CAD system of this embodiment further proceeds to step 17, as shown in FIG. It is checked whether there is another type of CAD diagram. And this CA
As a result of the check in step 17, the D-system responds to the corresponding other type of CA, for example, when a circuit diagram is created.
If there is no D diagram, the process is terminated as it is in step 17, but other types of C diagrams corresponding to the created CAD diagram are displayed.
If there is an AD diagram, for example, if a circuit diagram has already been created and both CAD diagrams are prepared as in the case where the control panel outline drawing has been created, the process proceeds from step 17 to step 18,
The consistency check after step 18 is automatically performed.

That is, the CAD system of this embodiment is:
First, in step 18, the CA created in steps 13 to 16 is used.
The parts table of another type of CAD drawing corresponding to the D drawing (if there is a plurality, the first drawing in an appropriate order among them) is obtained, and then in step 19, the device number which is a common keyword is used as a clue. Between the component table of the created CAD diagram and the corresponding CAD diagram, referring to data indicating another type of drawing in which the electric component appears in the composite component data, Cross-check for inconsistencies such as differences and specifications.

For example, the pilot lamps PL01 to PLO3 and the push button PB01 shown in the part B in the circuit diagram of FIG.
The pilot lamps PL01 to PLO3 and the push button PB01 shown in FIG.
This means that the specifications must match each other, and if they do not match, there is an inconsistency. Further, for example, the specifications of the key switch KS01 and the push button PB02 shown in the part C in the circuit diagram of FIG. 5 and the key switch KS01 and the push button PB02 shown in the outline drawing of the control panel of FIG. If they do not match, there is a mismatch.

In the composite part data, the position data, the shape data, and the data indicating another type of drawing in which the electric component appears will naturally be different if the type of drawing is different. Even if the data differs between the component tables, it is not determined that there is inconsistency.

If there is an inconsistency as a result of the cross-check in step 19, the CAD system proceeds from step 20 to step 21, and the CAD system proceeds to step 21 where the inconsistent electric component has The content of the inconsistency is displayed in characters on the screen based on the attribute data of the electric component, and other types in which the electric component appears in the composite component data of the inconsistent electric component Based on the data showing the drawing, a CAD drawing on which the electric component is drawn is displayed on the screen, and further, based on the drawing position data on the drawing in the composite component data of the mismatched electric component, The electric part in the CAD diagram displayed on the screen is particularly highlighted, so that the designer can recognize the mismatched portion and prompt the user to correct the drawing.

The CAD system returns to step 17 when the designer corrects all the inconsistencies in step 20 based on the display of the inconsistency, and also when there is no inconsistency as a result of the cross check in step 19. Returning from step 20 to step 17, as a result of the check in step 17, if there is no other kind of corresponding CAD diagram, the process is terminated as it is. The processing from step 18 on is repeated for the corresponding other type of CAD drawing to urge drawing correction of the mismatched portion. Therefore, the steps 18 to 21 correspond to an inconsistent component check / display unit.

As described above, according to the CAD system of this embodiment, after a plurality of types of CAD diagrams, for example, a circuit diagram and a control panel outline drawing are created, when a designer inputs a signal indicating the end of the drawing creation, The system will automatically
Check the inconsistency of the electrical components between the D diagrams, and if there is an inconsistency, display the content of the inconsistency, for example, a difference in the number of parts or a difference in specifications, on the screen of the CAD system. At the same time, a CAD drawing on which the inconsistent electric component is drawn is displayed, and the inconsistent electric component in the CAD diagram is particularly emphasized and displayed to prompt the drawing correction. In addition, the inconsistency can be found in a short time, the inconsistency can be corrected substantially simultaneously between a plurality of types of drawings, and the inconsistency check is incorporated in the CAD system design procedure, so Can perform that check.

The CAD system of this embodiment can also check for mismatch between a circuit diagram and a wiring diagram in the same manner as described above.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, a process corresponding to a component table creating unit and a process corresponding to an inconsistent component check / display unit are provided. The specific contents of each step can be appropriately changed as necessary within the scope of the present invention described in the claims.

[0028]

As described above, according to the CAD system for an electric system of the present invention, the CAD system automatically checks for inconsistency and prompts the user to correct the drawing, so that the inconsistent portion can be found accurately and in a short time. The inconsistency can be corrected substantially simultaneously between a plurality of types of drawings.
Since the inconsistency check is incorporated in the design procedure by the AD system, the inconsistency check can be executed reliably.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing the configuration of an electrical CAD system according to the present invention.

FIG. 2 is a flowchart showing an embodiment of an electrical CAD system according to the present invention and a procedure of CAD diagram creation and mismatch checking performed by a designer;

FIGS. 3A, 3B, and 3C are a front view, a side view, and a partially enlarged view showing an example of a housing in a control panel outline view created by the CAD system of the embodiment.

FIG. 4 is a front view showing an example of an operation panel in a control panel outline drawing created by the CAD system of the embodiment.

FIG. 5 is a configuration diagram showing an example of a circuit diagram created by the CAD system of the embodiment.

FIG. 6 is a flowchart showing a procedure for creating a CAD diagram performed by a designer using a conventional electrical CAD system.

FIG. 7 is a flowchart showing a procedure of a CAD drawing mismatch check performed by a designer using the conventional electrical CAD system.

[Explanation of symbols]

 11 Parts table creation means 12 Inconsistent parts check / display means

Claims (1)

(57) [Claims] When creating a plurality of types of CAD drawings of an electrical system, regardless of the type of drawing, the graphic data of each electrical component drawn in the CAD drawing and the drawing position data on the drawing include: The attribute data of the electric component including the data classified by the common keyword among the plurality of types of drawings and the data indicating another type of drawing in which the electric component appears are unified among the plurality of types of drawings. The composite part data is created by adding the
A part table creating means (11, 14 to 16) for gathering the composite part data of all the electrical parts drawn in the AD diagram and creating a component table of the CAD diagram, and inputting an instruction indicating the end of the drawing creation Based on the common keyword as a clue, a cross-check is made as to whether or not there is an inconsistency in the composite component data between the component tables of the plurality of types of CAD diagrams.
On the screen of the AD system, based on the attribute data of the electrical component in the composite component data of the electrical component with the mismatch, the content of the mismatch is displayed, and the electrical component with the mismatch is displayed. Based on data indicating another type of drawing in which the electric component appears in the composite component data, the CAD drawing in which the electric component is drawn is displayed, and further, the composite component of the electric component having the mismatch is displayed. Means for checking and displaying inconsistent parts (12, 18 to 21) for emphasizing and displaying the electric parts in the displayed CAD drawing, based on the drawing position data on the drawing in the data. A CAD system for electrical systems.