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High Speed Inspection for Drilled Holes/Blind Holes in Circuit Panels

IP.com Disclosure Number: IPCOM000062378D
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Brown, S: AUTHOR [+2]

Abstract

A method is described to inspect all drilled/blind holes on a circuit panel in an economical time/cost way. In accordance with the new method, a computer vision system employs image processing techniques to inspect all holes, including blind holes, for location, diameter, and presence/absence. The system performs this inspection in less time than required to do partial inspection manually, and eliminates operator error/subjectivity. A key feature of this arrangement is its high pixel processing rate regardless of what type of manipulation is occurring. This machine can handle various sizes of panels. All inspection data can be downloaded from the host so no teaching of individual panel types is necessary. Inspection data can also be uploaded to the host for archiving or analysis.

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High Speed Inspection for Drilled Holes/Blind Holes in Circuit Panels

A method is described to inspect all drilled/blind holes on a circuit panel in an economical time/cost way. In accordance with the new method, a computer vision system employs image processing techniques to inspect all holes, including blind holes, for location, diameter, and presence/absence. The system performs this inspection in less time than required to do partial inspection manually, and eliminates operator error/subjectivity. A key feature of this arrangement is its high pixel processing rate regardless of what type of manipulation is occurring. This machine can handle various sizes of panels. All inspection data can be downloaded from the host so no teaching of individual panel types is necessary. Inspection data can also be uploaded to the host for archiving or analysis. Alignment of a panel is not critical due to method of imaging which compensates for minor vertical, horizontal and angular misalignments. Resolution accuracies are functions of magnification and/or the quality of the optical hardware. Higher resolutions result in smaller area being imaged and thus slower processing times for a given panel.

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