JPH1027192A - Wiring pattern verification system - Google Patents

Abstract

(57) [PROBLEMS] To provide a printed circuit board CA in a wiring pattern creation system using a circuit diagram CAD and a printed circuit board CAD.
To provide a wiring pattern verification system capable of sufficiently suppressing the occupation time of D. A circuit diagram CAD10 and a printed circuit board CAD are provided.
In the wiring pattern creating system using the wiring pattern verification apparatus 30, a wiring pattern verification apparatus 30 for coloring and displaying different colors on the wiring pattern according to the attribute of the wiring pattern is provided, and the wiring pattern verification processing by the printed circuit board CAD 20 is eliminated. A device in which a verification process is performed by the device 30. [Effect] Since the wiring pattern verification processing by the printed circuit board CAD 20 becomes unnecessary, the occupation time of the printed circuit board CAD 20 can be reduced, and an efficient printed circuit board design can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for designing a wiring pattern for a printed board using CAD,
In particular, the present invention relates to a wiring pattern verification system capable of arbitrarily verifying a wiring pattern while creating the wiring pattern by CAD.

[0002]

2. Description of the Related Art With the improvement of the price / performance ratio of computers, the design of wiring patterns for printed circuit boards has recently been increasing.
CAD, or computer aided design systems, have come to be used.

FIG. 5 shows an example of a wiring pattern design system for a printed circuit board using such a CAD. The system generally includes a circuit diagram CAD (CAD for circuit diagram creation) 10 and , A printed circuit board CAD (a printed circuit board pattern forming CAD) 20.

[0004] First, a circuit diagram is created using the circuit diagram CAD 10, and when the circuit diagram is completed, circuit diagram data 1 including component information and connection information is taken out and input to the printed circuit board CAD 20. Then, the printed circuit board CAD 20 is operated based on the circuit data 1 to create wiring pattern diagram data 2 including component information, connection information, and wiring path information.

The flow of the design work at this time is as shown in FIG. 6. Here, the process by the circuit diagram CAD 10 is only the circuit diagram creation process in step S1.
Steps 2 and later are performed by the printed circuit board CAD 20.

After the processing in step S1 is completed, the circuit diagram CAD
From 10 the circuit diagram data 1 (FIG. 5) is printed circuit board CAD2.
If it is passed to 0, the process of step S2 is executed first, and the layout of components is designed. When the layout design is completed, the process proceeds to step S3 and subsequent steps, where the layout design is verified in step S3, and whether or not the verification result is correct is determined in step S4.

First, the result of the determination in step S4 is N
If (No), the process returns to step S2 to correct the layout design, and repeats until the determination result in step S4 becomes Y (Yes). Next, when the determination result in step S4 becomes Y, the process proceeds to step S5, and wiring design is performed on the component whose layout is determined.

Then, the verification processing in step S6 and the judgment processing in step S7 are executed, and
When the result of step 7 becomes Y, the wiring pattern diagram data 2 (FIG. 5) completed in step S8 is output, and the printed circuit board design processing ends.

At this time, in the prior art, step S2,
The verification process in S3 and steps S6 and S7 is performed by displaying an image of the wiring pattern on the monitor screen of the printed circuit board CAD 20 and observing the image, or creating a hard copy of the wiring pattern, The processing was done by looking at the figures drawn there.

[0010]

In the prior art, no consideration is given to an increase in the occupation time of the printed circuit board CAD due to the wiring pattern verification processing, and the operating rate of the expensive printed circuit board CAD is reduced. There was a problem. Hereinafter, the reason will be described.

First, for verification of a wiring pattern, for example,
There are the following items. Is the separation of analog and digital circuits complete? Is the separation of the external input / output signal circuit system and the internal signal circuit system complete? Is the ground wiring pattern completely surrounding the wiring pattern that requires shielding? Is the insulation distance in accordance with the voltage between the wiring patterns complete?

Here, the difference between these wiring patterns, for example, whether they are an analog circuit system or a digital circuit system, is called an attribute of the wiring pattern. Therefore, the verification of the wiring pattern is performed according to this attribute. become. Also, as a premise in this case, the suitability of component placement is also subject to verification.

However, if the verification of the wiring pattern performed for each attribute as described above is performed from the displayed image or graphic of the wiring pattern as it is, the burden on the operator accompanying the identification of the attribute increases, and the work time and time are reduced. The frequency of mistakes will increase.

Therefore, a method of copying and outputting a wiring pattern diagram from a printed circuit board CAD, applying a different color to the wiring pattern diagram with a color pencil, a felt-tip pen, or the like according to the attribute, and performing verification has conventionally been employed. However, even in this case, there is no change in that it is necessary to recognize the attribute for each wiring pattern, which is the same in that a great burden is imposed on the operator.

Therefore, a method of coloring a wiring pattern using a printed circuit board CAD is conceivable. In this case, it is necessary to allow an operator to arbitrarily select an attribute to be specified. During the output of the colored wiring pattern diagram, the printed circuit board CAD is occupied.
The operating rate of the system will decrease.

It is an object of the present invention to provide a wiring pattern verification system that can sufficiently suppress the occupation time of a printed circuit board CAD in a wiring pattern creation system using a circuit diagram CAD and a printed circuit board CAD.

[0017]

An object of the present invention is to convert wiring pattern information designed and created on a printed circuit board CAD into a circuit diagram C.
A means for processing based on attribute information obtained from circuit diagram information designed and created by AD is provided so that a wiring pattern diagram colored arbitrarily different for each attribute requested can be visualized and obtained. Achieved.

According to the above-mentioned means, without using the printed circuit board CAD, for each attribute requested by the operator,
Since a wiring pattern diagram arbitrarily colored differently can be obtained, the verification of the wiring pattern can be executed based on this, so that the occupation of the printed circuit board CAD by the wiring pattern verification work can be suppressed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wiring pattern verification system according to the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 shows an overall configuration of a CAD system to which an embodiment of the present invention is applied. In the drawing, reference numeral 30 denotes a wiring pattern verification device, and other circuit diagrams C
The AD 10 and the printed circuit board CAD 20 are the same as those in the related art described with reference to FIG.

The wiring pattern verification device 30 is composed of a personal computer (personal computer) having a desired performance. The wiring pattern verification device 30 takes in wiring pattern diagram data 2 from a printed circuit board CAD 20 and extracts attribute information 3 for each circuit from the circuit diagram CAD 10. It takes in and displays the wiring pattern colored in the designated color on the monitor screen for each attribute of the circuit selected by the designation of the operator.

Next, the operation of the system according to the embodiment of the present invention will be described. First, the circuit diagram CAD10
Is completed, the circuit diagram data 1 consisting of the component information and the connection information is output and passed to the printed circuit board CAD 20, thereby starting the wiring pattern creation process by the printed circuit board CAD 20. The points are the same as the prior art.

In the embodiment of FIG. 1, the layout design process in the process of creating the wiring pattern by the printed circuit board CAD 20 and the respective verification processes at the stage when the wiring design process is completed are as shown in FIG. , Printed circuit board CAD2
This is different from the prior art in that the processing is executed independently by the wiring pattern verification device 30 instead of being executed by 0.

In FIG. 2, the layout verification processing in step S30-1 and the wiring verification processing in step S30-2 are performed based on the circuit diagram CAD10 and the data 1 and 2 taken in from the printed circuit board CAD20.
The processing is executed by using the wiring pattern verification device 30 separately from the processing of FIG. At this time, the data may be fetched by either online processing or offline processing using a floppy disk or the like.

First, in step S30-1, data relating to the component arrangement determined in step S2 is
For each component, specify the attribute of the circuit to which the component belongs, specify the color, display it on the monitor surface, and look at the component layout diagram colored and displayed corresponding to the specified attribute.
It verifies whether the required conditions for the arrangement of each component are satisfied.

Next, the result is transferred to the printed circuit board CAD 20 as data, and based on this verification result,
The layout design processing of step S2 is executed, and if necessary, the correction is made. Then, the process proceeds to the wiring design processing of the next step S5.

Next, in step S30-2, for the data relating to the wiring pattern determined in step S5, the attribute of the circuit is designated for each circuit, the color is designated and displayed on the monitor surface, and the color is classified. By checking the wiring pattern, it is verified whether or not the wiring pattern satisfies the conditions required for the circuit.

Then, the result is transferred to the printed circuit board CAD 20 as data, and based on the result of the verification, the wiring process of step S5 is executed again, and if necessary, a correction is made. It shifts to output processing.

As a result, in the prior art, as shown in FIG. 6, in the printed circuit board design process, all processes of layout design, layout verification, wiring design, wiring verification, and various types of information output are performed using the printed circuit board CAD 20. In contrast, in the embodiment of the present invention, as shown in FIG. 2, the verification processing is performed by the wiring pattern verification apparatus 30 in parallel with the design processing using the printed circuit board CAD 20, as shown in FIG. Can be executed, and as a result of the verification, it is only necessary to make corrections for the portions that need to be corrected.
The occupation time of the AD 20 can be greatly reduced.

More specifically, in the embodiment of the present invention, as shown in FIG. 2, first, the layout verification processing required in the layout design processing stage is performed by the wiring pattern verification apparatus 30 using the wiring design processing by the printed circuit board CAD 20. In this case, as a result of the placement verification, only the portions that need to be corrected need to be corrected in the layout design processing of the printed circuit board CAD 20, and even in the next wiring design processing step, the printed wiring board that follows is corrected. Various kinds of information output processing by the CAD 20 and wiring verification processing by the wiring pattern verification device 30 can be executed in parallel.
Since the correction can be made only by the wiring design processing by the AD 20, the occupation time of the printed circuit board CAD 20 can be greatly reduced.

Next, an embodiment of colored display for each attribute by the wiring pattern verification device 30 according to the present invention will be described. First, FIG. 3A is a display example of a wiring pattern by the wiring pattern verification device 30, and FIG. 3B is a circuit diagram of a portion corresponding to the wiring pattern displayed in FIG. A portion 4a surrounded by a white line in FIG. (A) is a display portion of a portion 4b surrounded by a broken line in the circuit diagram of FIG. (B), and a color cannot be displayed in the diagram. The difference is expressed by the difference between light and dark.

That is, in FIG. 3A, the difference in coloring is represented by light and dark, but on an actual monitor surface, they are displayed in different colors such as red, yellow, and green, respectively. For example, a brightly drawn pattern in the figure represents a pattern displayed in red, and a darker pattern represents a state displayed in yellow or green, for example.

FIG. 3 is a diagram showing a printed circuit board CAD20.
The circuit of (a) is designed into a wiring pattern, and wiring pattern diagram data 2 representing the circuit is electrically separated from a plurality of attributes specified by the circuit diagram CAD 10 using the attribute information 3 fetched from the circuit diagram CAD 10. Is designated and color-coded and displayed on the screen, and the wiring pattern of the portion 4a surrounded by a white line in FIG. (A) corresponds to the portion surrounded by a broken line in FIG. (B).

Therefore, according to this embodiment, the circuits to be electrically separated on the circuit diagram are displayed in different colors on the wiring pattern, so that it is determined whether or not the electrical separation has been completed. Can be easily verified, and
By arbitrarily changing the selection of attributes and selecting the display color, it is possible to examine the state of the wiring pattern from a plurality of different viewpoints and verify whether the required characteristics are satisfied. Printed circuit board equipped with a circuit with the characteristics described above, while suppressing the occupation time of the printed circuit board CAD20,
The design can be made surely and easily.

By the way, as described above, the attributes to be considered in the verification of the wiring pattern are not necessarily limited to one type, and a plurality of types are often required. Therefore, it is necessary to sequentially perform the verification for each of them. At this time, it may be more efficient to proceed with the verification of the related attributes at the same time.

FIG. 4 shows a case where a plurality of attributes are selected as attributes to be considered, and are displayed in different colors according to one attribute so that each of them can be separated and recognized. 9 shows a display example according to the embodiment of the present invention in the case of the above.

In the embodiment of FIG. 4, the insulation distance corresponding to the voltage division information is selected as an attribute, and the wiring pattern is displayed in a color-coded manner using the electrical separation as an attribute on the screen as in FIG. This shows an example in which insulating regions corresponding to voltage divisions are indicated by broken lines 5.

Therefore, according to the embodiment shown in FIG. 4, it is possible to simultaneously verify not only the required electrical isolation but also whether or not the required insulation distance is satisfied. Thus, an efficient printed circuit board design can be obtained, and the occupation time of the printed circuit board CAD 20 can be suppressed.

By the way, as for the related attribute, the other attribute can be derived from one attribute. For example, if the above-mentioned electrical separation is one of the attributes, the necessary insulation distance can be easily obtained from the voltage division information given at this time and the relationship between the voltage and the creepage distance on the printed circuit board.

Therefore, in the embodiment of FIG. 4, the wiring pattern verification device 30 is provided with a means for deriving one attribute from the other attribute. May be configured to efficiently obtain the verification.

By the way, during the execution of the verification work, the attribute other than the attribute passed from the circuit diagram CAD 10 may be used because the distance from the start point to the end point of the wiring pattern is long or the wiring route has a detour. You may need to set attributes. Thus, according to the wiring pattern verification system of the present invention, it is possible to provide a function of arbitrarily changing an attribute even in response to an attribute change request generated in such a verification process.

Although not specifically described, the embodiment of the present invention has no particular restrictions on the types and combinations of the circuit diagram CAD and the printed circuit board CAD, and it goes without saying that the present invention can be implemented by any model and combination. No.

According to the embodiment of the present invention, since the printed circuit board CAD is not occupied by the verification processing, not only the possibility that the operating efficiency of the printed circuit board CAD is reduced can be eliminated, but also the hard copy can be performed. Since there is no need to create it, there is no risk of cost increase in this respect.

[0043]

As described above, according to the present invention, in a printed circuit board design system, a printed circuit board CA is provided.
Since a wiring pattern verification device is used separately from D, the occupation time of the printed circuit board CAD for wiring pattern verification can be greatly reduced, and the efficiency and cost reduction of the printed circuit board design can be reduced. It can be achieved sufficiently.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of a printed circuit board design system to which an embodiment of a wiring pattern verification system according to the present invention is applied.

FIG. 2 is a process chart showing a design process according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a display example of a wiring pattern diagram according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing another display example of the wiring pattern diagram according to the embodiment of the present invention.

FIG. 5 is a configuration diagram showing an example of a conventional printed circuit board design system.

FIG. 6 is a process chart showing a design process according to the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Circuit diagram data consisting of component information and connection information 2 Wiring pattern diagram data consisting of component information and connection information and wiring route information 3 Attribute information 10 Circuit diagram CAD 20 Printed circuit board CAD 30 Wiring pattern verification device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuyoshi Yamazaki 7-1-1, Higashi-Narashino, Narashino-shi, Chiba Hitachi Keiyo Engineering Co., Ltd. (72) Inventor Kiyotaka Toyama 7-1-1, Higashi-Narashino, Narashino-shi, Chiba Stock Hitachi, Ltd. Industrial Equipment Division (72) Inventor Tomohiko Seki 7-1-1 Higashi Narashino, Narashino City, Chiba Prefecture Inside Hitachi Keiyo Engineering Co., Ltd.

Claims (3)

[Claims] In a wiring pattern creation system using a circuit diagram CAD and a printed circuit board CAD, a wiring pattern verification device for coloring and displaying different colors on the wiring pattern according to the attribute of the wiring pattern is provided. A wiring pattern verification system characterized in that a wiring pattern verification process can be executed independently of CAD processing. 2. The invention according to claim 1, wherein the wiring pattern verification device is configured to perform display in different colors and display in different modes, respectively, according to a plurality of attributes of the wiring pattern. A wiring pattern verification system, characterized in that: 3. The wiring pattern verification system according to claim 2, wherein the wiring pattern verification device includes means for deriving one attribute from another attribute.