Browse Prior Art Database

Circuit board cost analysis support system

IP.com Disclosure Number: IPCOM000033387D
Original Publication Date: 2004-Dec-09
Included in the Prior Art Database: 2004-Dec-09
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Abstract

A costed BOM (Bill of Materials) generation support system for PCB (Printed Circuit Board) assembly.

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Circuit board cost analysis support system

 Disclosed is a costed BOM (Bill of Materials) generation support system for PCB (Printed Circuit Board) assembly. The system is composed of a PCB image scanner, a system controller with image processing and recognition functions, and a part information database system as shown in the Figure 1.

When a target PCB assembly is placed in the scanner and the system is started, a BOM with cost information is automatically generated as shown in the Figure 2.

Part information Database PCB Image scanner

System controller w/ Image process and analysis function

Name

Name

Part number

Cost

Cost

#

#

Total cost

Total cost

Parts

Parts

Part number

    $ XXX 2 $ XX HM1234 RAM

CPU Board

CPU Board

A0001

A0001

$ XX $ XX

$ XX $ XX

1 1

1 1

$ XXX

$ XXX

PCB

EP010

EP010

$ XXX

$ XXX

Production Mold Personnel ADC ROM

MBM345

MBM345

$ XXX

$ XXX

    $ XXX 2 $ XX HM1234 RAM

AD1000

AD1000

$ XX $ XX $ XX

$ XX $ XX $ XX

$ XXX

$ XXX

Indirect

Indirect

Production Mold Personnel ADC ROM

- 1 5

- 1 5

$ XXX

$ XXX

    $ XXX -

    $ XXX -

$ XX

$ XX

$ XX

    $ XXX -

$ XX

    $ XXX -

R&D

R&D

・・・

・・・

・・・

・・・

$ XX

$ XX

$ XXX

$ XXX

 

Total

Total

$ XXXX

$ XXXX

Figure 1.  System overview    Figure 2.  BOM example

The PCB image scanner has standard optical CCD (Charge Coupled Device) or CMOS (Complimentary Metal Oxide Semiconductor) image sensors to scan the shape and the nomenclature of the PCB and its components in the visible light range.

It can also has other types of sensors based on the ultrasonic waves or X-rays, which are not in the visible light range, to scan the inner portion of the assembly, such as the size of a silicon chip inside of a module, and the structure and the technology of the PCB.

The Figure 3 shows the three-stage processing flow of creating the BOM with cost associations and its database described below.

In the first stage processing the system controller, which normally consists of a PC and software, controls the scanner and synthesizes a visible PCB image. The image processing and recognition function analyzes the image by using the OCR (Optical Character Recognition) and the other image processing techniques to identify the PCB by the shape and the dimension, and the parts by the part numbers and the maker names by referring the part information database, which has various kinds of part information, e.g. general names, part numbers, maker names, logos, IDs, shapes, dimensions, costs, and so forth. Then th...