JP2002032422A - Support system for component table generation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system which can easily generate a component table of good quality by selecting components in consideration of a combination of the components in a design upstream stage for a printed wiring board. SOLUTION: This system is provided with a circuit block database 16 stored with one or more components needed for a circuit constituting a function block on a printed wiring board and their total number, and the component table of good quality is easily generated at the design upstream stage by providing a component table editing part 11 which performs total number variation, addition, and deletion as to components for each circuit block, an alternative circuit block detection part 18 which detects an alternative circuit block for a nonstandard circuit block, and a circuit block substitution part 19 which substitutes components for each circuit block for component information taken out of a product design information master 15 managing design information on a printed wiring board, etc., having been designed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parts table for describing information on components of a printed wiring board, and to a method for simplifying the preparation of a parts table.

[0002]

2. Description of the Related Art A circuit of a printed wiring board is usually designed by dividing it into blocks according to functions, and each circuit block is composed of one or a plurality of components. Therefore, it is wasteful for each designer to individually create the information, and there is a possibility that errors are mixed. For this reason, it is possible to eliminate waste and improve design quality by creating a recommended circuit block in advance and using it by a designer.

[0003] As an apparatus for arranging and designing parts on a printed circuit board using a circuit block composed of a plurality of parts including wiring patterns in consideration of electrical characteristics, an apparatus described in JP-A-11-259551 is disclosed. There is.

[0004]

In designing a printed wiring board, a well-designed printed wiring board is often used, and a part of the printed wiring board is redesigned. Diversion design often changes only a part of the circuit of an already-designed printed wiring board.In such a case, first change the printed wiring board bill of materials and create a new bill of materials. If the circuit is changed and the arrangement / wiring is changed based on the information, the trouble of checking the component information and the information of the circuit block each time can be omitted. Also, in changing parts in the diversion design, it is more efficient to prevent errors by changing the circuit block unit, for example, to change to a PLL circuit with a higher frequency than the diversion source, rather than changing the part unit. be able to.

[0005] The components constituting the printed wiring board include:
Although it is not known exactly after the completion of the design, if it is attempted to consolidate the parts after the completion of the design, the parts may not be able to be consolidated by the manufacturing process due to the stock of the factory and the supply capacity of the parts vendor. For this reason, parts must be selected and ordered in the design process as soon as possible. An object of the present invention is to provide a component that can easily create a high-quality parts list by performing an editing operation such as adding or replacing parts in a circuit block unit with respect to a parts list of an already-designed printed wiring board in a design upstream process. It is to provide a table creation support system.

[0006]

In order to achieve the above-mentioned object, a bill-of-materials creation supporting system according to the present invention provides a bill-of-materials information including circuit block information from designated design data of a printed wiring board. A parts table information loading means, a circuit block database storing circuit block information, a parts table editing means for adding / deleting / changing the number of parts for each circuit block using the circuit block database; A manual instruction circuit block replacing means for replacing a circuit block included in the information and a circuit block retrieved by manual instruction from the circuit block database, and a non-standard circuit block included in the bill of material information and a substitute circuit block thereof. A non-standard circuit block replacement unit that retrieves and replaces data from the database, and a non-standard circuit block replacement unit. Means is a parts table generation support system and means for searching for similar circuit blocks alternate circuit blocks having the same circuit characteristics as a non-standard circuit block from the circuit blocks database undefined during Alternatively circuit block replacement.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a hardware configuration example showing an embodiment of a parts table creation support system of the present invention.
As shown in FIG. 1, the BOM creation support system 1 includes an input device 2 such as a mouse and a keyboard, a display device 3 such as a CRT,
This is a computer system provided with an external storage device 4 such as a hard disk for performing interactive processing.

FIG. 2 is a functional block diagram of the parts table creation support system 1 of the embodiment shown in FIG. The product design information master 15 is stored in the external storage device 4 of FIG.
As shown in FIG. 3, product attribute information such as an identifier for identifying a product for each designed product, a product classification, and a product name; component component information such as an identifier, a name, and the number of parts constituting the product; Circuit block identifier,
Stores constituent circuit block information such as name and number of members. The component information of the product design information master 15 includes the components of the circuit blocks used in the product.
For example, assuming that three circuit component identifiers PRT0002 are required to configure a circuit block whose circuit block identifier is BLK0002 shown in FIG. 3, the number of circuit blocks is two. The number of PRT0002 members required to configure BLK0002 is six.

The circuit block database 16 is stored in the external storage device 4 shown in FIG. 1. As shown in FIG. 4, an identifier for identifying a circuit block for each circuit block, a name of the circuit block, and a circuit characteristic of the circuit block are stored. Circuit block attribute information and circuit blocks such as broadly classified codes, non-standard codes indicating standard / non-standard circuit blocks, one or more circuit characteristics indicating circuit block characteristics, and replaceable circuit block identifiers. The configuration information of the circuit block such as the identifier of the component to be configured and the number of components is stored. In FIG. 4, since the standard code of the circuit block is defined as OK indicating the standard, the value of the alternative circuit block identifier is defined as NONE indicating that there is no alternative circuit block. In the case of a circuit block defined as NG (hereinafter, referred to as a non-standard circuit block), the identifier of a replaceable circuit block is defined as the substitute circuit block identifier.

The parts table data file 17 is output from the parts table output unit 12 and stored in the external storage device 4. As shown in FIG. 5, the parts table data file stores component parts information such as identifiers, names, and numbers of parts constituting the edited parts table, and configuration circuit block information such as circuit block identifiers, names, and numbers. The component information of the component table data file 17 includes the component of the circuit block.

The parts table fetching unit 10 uses the product identifier and the product classification input from the input device 2 to the input receiving unit 13 to output the design information of the printed wiring board as shown in FIG. Take in. In FIG. 3, the product category of the printed wiring board is PCB. The following information is referred to as parts table information.

The parts table editing unit 11 includes a number editing unit 11a, a deleting unit 11b, and an adding unit 11c. The parts table information capturing unit 10 captures the parts according to an instruction input from the input device 2 to the input receiving unit 13. In order to edit the component parts information and the component circuit block information of the component table information of the printed wiring board in units of circuit blocks, a component circuit block edit screen 60 as shown in FIG. To be displayed. On the constituent circuit block edit screen 60, in addition to the identifier and the number of circuit blocks taken from the BOM information, attributes such as the name, classification, and standard code of the circuit block taken from the circuit block database 16 based on the circuit block identifier are displayed. Circuit block table 6 for displaying information
1. An add button 62, a delete button 63, and a data output button 64 are arranged. Next, the processes of the number editing unit 11a, the deleting unit 11b, and the adding unit 11c of the parts table editing unit 11 will be described.

First, the number changing unit 11a of the circuit block will be described with reference to FIG. When the number of circuit blocks is changed in the circuit block table 61 of the constituent circuit block edit screen 60, the number of circuit blocks in the parts table is changed from the changed number of circuit blocks (identifier is BLK002). The difference number 73 of the sign is obtained by subtracting the number 11 before the change, and then the circuit block database 16
Then, the component part information 74 of the circuit block identifier BLK002 is extracted, and the number of each component is multiplied by the change difference number 73 to obtain changed component information 75 for changing the components in the parts table. The number of components in the changed component information 75 and the number of components in the component information 66 are added to the number of components in which the component identifier in the changed component information 75 and the component identifier in the component information 76 in the component table information match. For example,
The number of members minus 8 of the component information 76 is added to the number of members 16 of the parts table information of the part identifier PRT004, and the number of members after editing is set to eight. Further, the number of circuit blocks in the constituent circuit block information is changed from the number 72 before change to the number 71 after change.

Next, the deletion unit 11b will be described. When the delete button 63 is instructed, the delete unit 11b deletes the circuit block identifier from the constituent circuit block information in the parts table for the circuit block selected in the circuit block table 61 on the constituent circuit block edit screen 60. Then, the number of components required to construct the circuit block identifier to be deleted is deleted from the component information. In performing this processing, the deleting unit 11b performs the same processing as the number changing unit 11a, fixing the changed number of members 71 to 0. The part and the circuit block whose number of members has become 0 are deleted from the parts table.

Next, the adding unit 11c will be described. The adding unit 11c displays a result of performing a parameter search using a circuit block search screen 80 of FIG. 8 called by an add button 62 of a constituent circuit block editing screen 60 by a user such as a designer. The number changing unit 11 a uses the circuit block selected from the search result screen 90 and the number of additional circuit blocks input to the additional number area 72.
The same processing is performed. First, the number of members before change 72 is fixed to 0, the number of members input in the additional number area 92 is calculated as the number of changed members 71, and the number of changed component parts 75 is calculated. The number of component identifiers registered as components in the parts table is calculated. If the component identifier is not registered in the component table, the component identifier, the component name, and the calculated number of changed component parts are added to the component information of the component table. Further, the identifier and the number of circuit blocks to be added to the constituent circuit block information of the parts table are added.

The parts table output unit 12 is called from the data output button 63 on the component circuit block editing screen 60, and outputs the parts table information edited by the parts table output unit 11 to the external storage device 4 as a parts table data file.

The input receiving unit 13 receives data and instructions input from the input device 2 and delivers the data and instructions to the parts table taking-in unit 10 and the parts table editing unit 11.

The display output unit 14 includes a component block editing screen 60 of FIG. 6 of the parts table editing unit 11, a circuit block search screen 70 of FIG. 7, and a circuit block search result screen 80 of FIG.
Is displayed on the display device 3.

According to the present embodiment, the designer can change, add, and delete the number of components in circuit block units with respect to the parts table of the printed wiring board, and can easily create a high-quality parts table. .

FIG. 10 is a functional block diagram showing a second embodiment of the present invention. In the embodiment of FIG. 10, an alternative / similar circuit extraction unit 11d and a circuit replacement unit 11e are added to the parts table editing unit 11 of the embodiment of FIG.

The circuit replacement unit 11e replaces the circuit block in the parts table with the circuit block extracted by the replacement / similar circuit extraction unit 11d or the circuit block retrieved from the circuit block database 16. For example, the deleting unit 11b and the adding unit 1 of the parts table editing unit 11 in the first embodiment
First, the constituent circuit block information and the constituent part information are deleted from the parts table by using the processing described in 1c in order, and the circuit block designated for replacement is added to the parts table using the number of deleted circuit blocks. I do.

The circuit block search from the circuit block database 16 includes the circuit block search screen 80 shown in FIG. 8 and the circuit block search screen shown in FIG. 9 as described in the addition section 11a of the parts table editing section 11 of the first embodiment. The result screen 90 is used. However, the additional number area 92 in the circuit block search result screen 90 of FIG. 9 is not provided, and the number of times of the round block in the parts table is used for replacement.

The processing of the alternative / similar circuit extraction unit 11d will be described with reference to the processing flow of FIG. In FIG. 11, the circuit block identifier and the number of non-standard circuit blocks whose standard code is defined as NG are read from the parts list (FIG. 1).
1 111), the substitute circuit block identifier defined for the non-standard circuit block is extracted from the circuit block database 16 (112), and it is determined whether or not the value of the substitute circuit block identifier is NONE indicating that the substitute circuit block is undefined.
(Id. 113). If the value of the substitute circuit block identifier is other than NONE, the substitute circuit block is defined, and the attribute information and the component information of the circuit block having the same circuit block identifier as the substitute circuit block identifier are extracted (see FIG. 11).
4). When the value of the alternative circuit block identifier is NONE, a circuit block having the same circuit characteristics is searched from the circuit block database 16 using the classification and circuit characteristics of the same circuit block from the circuit block identifier extracted in step 101.
(115), it is determined whether there is a circuit block having the same circuit characteristic (116). If there is a circuit block, the circuit block is set as an alternative circuit block, and if not, a warning message is displayed. Next, the identifier of the substitute circuit block, the identifier and the number of the circuit block read in step 111 are transferred to the circuit block replacing unit 17 (step 117), and it is confirmed whether the non-standard circuit block is still in the parts table (1).
18) If there is, jump to step 111; otherwise, end the processing.

According to the present embodiment, a designer can replace parts on a parts list of a printed wiring board in units of circuit blocks, and a high-quality parts list can be easily created.

[0025]

According to the present invention, a circuit block database composed of one or a plurality of components necessary for forming a circuit block in a printed wiring board is provided, and the upstream process of a diversion design using a pre-designed printed wiring board is provided. The component information of the specified pre-designed printed wiring board can be fetched, and editing processing such as adding or changing parts in circuit block units can be performed in consideration of the combination of parts. Has the effect. Also, according to the present invention, a parts table can be created in the design upstream process, so that parts ordering can be advanced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a hardware configuration example of a parts table creation support system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a functional block configuration of a parts table creation support system according to an embodiment of the present invention.

FIG. 3 is a view showing an example of data of a printed wiring board taken from a product design information master according to an embodiment of the present invention.

FIG. 4 is a diagram showing a data example of a circuit block database according to one embodiment of the present invention.

FIG. 5 is a view showing an example of a parts table data file according to an embodiment of the present invention.

FIG. 6 is a view showing an example of a constituent circuit block editing screen according to an embodiment of the present invention.

FIG. 7 is a view showing a calculation method of the number changing unit 11a of the parts table editing unit according to the embodiment of the present invention.

FIG. 8 is a view showing an example of a circuit block search screen according to one embodiment of the present invention.

FIG. 9 is a view showing an example of a circuit block search result screen according to an embodiment of the present invention.

FIG. 10 is a diagram showing an example of a functional block configuration of a parts table creation support system according to a second embodiment of the present invention.

FIG. 11 is a flowchart illustrating processing of an alternative circuit detection unit according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bill list creation support system, 2 ... Input device, 3 ... Display device, 4 ... External storage device, 10 ... Bill list take-in part, 11 ...
Parts list editing section, 11a: number changing section, 11b: deleting section,
11c: additional unit, 11d: circuit replacement unit, 11e: alternative
Similar circuit extraction unit, 12: parts table output unit, 13: input reception unit, 14: display output unit, 15: product design information master, 1
6 circuit block database, 17 parts bill data file, 18 alternative circuit block detection section, 19 circuit block replacement section, 60 configuration circuit block editing screen, 61
... Circuit block table on the constituent circuit block edit screen, 62 ...
Add button, 63 ... Delete button, 64 ... Data output, 7
1: Number of members after change of circuit block, 72: Number of members before change of circuit block, 73: Number of change difference of circuit block, 74
... Circuit block component information, 75 ... Circuit block changed component information, 76 ... Component parts information of the parts table before editing, 80 ... Circuit block search screen, 90 ... Circuit block search result screen, 91 ... Circuit block search Circuit block table on the result screen, 92...

 ──────────────────────────────────────────────────の Continued on the front page (72) Mihoko Kashiwagi, Inventor 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Hitachi, Ltd.Communications Division (72) Inventor Yukio Kawai 216 Totsukacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in the Communications Division, Hitachi, Ltd. (Reference) 5B046 AA08 BA04 DA01 KA05

Claims (4)

[Claims] 1. A printed circuit board, comprising: a circuit block constituted by a combination of one or a plurality of components for realizing a certain function; an identifier for identifying the circuit block and circuit characteristics;
A circuit block database storing attribute information of circuit blocks, such as classification codes roughly classifying circuit characteristics, physical shapes, etc., and identifiers and numbers of components of the circuit blocks, and component placement / wiring using the circuit block database. Means for creating a parts table including the identifiers and the numbers of the components constituting the printed wiring board, the identifiers of the circuit blocks and the numbers of the components from the design information of the designed printed wiring board, and a circuit block unit for the parts table. A parts list creation support system having editing means for adding, deleting, and changing the number of members. 2. The apparatus according to claim 1, further comprising means for selecting a circuit block in the parts table, and replacing the selected circuit block with a circuit block retrieved from a circuit block database to create a parts table. BOM creation support system. 3. A circuit block database including a flag indicating standard / non-standard as attribute information of the circuit block, a correspondence between a circuit block defined in the non-standard and a replaceable circuit block, and a non-standard in the parts table. 3. The parts list creation support system according to claim 2, further comprising means for creating a parts list by replacing the circuit block and its substitute circuit block. 4. A circuit block having the same circuit characteristics as the non-standard circuit block from the circuit block database when an alternative circuit block associated with the non-standard circuit block in the parts table is not defined in the circuit block database. 4. The parts table creation support system according to claim 3, further comprising means for extracting a similar circuit block and manually replacing the similar circuit block with the non-standard circuit block to create a parts table.