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Technical Library | 2024-04-29 21:39:52.0
In this paper, we develop and put into practice an Automatic Optical Inspection (AOI) system based on machine vision to check the holes on a printed circuit board (PCB). We incorporate the hardware and software. For the hardware part, we combine a PC, the three-axis positioning system, a lighting device and CCD cameras. For the software part, we utilize image registration, image segmentation, drill numbering, drill contrast, and defect displays to achieve this system. Results indicated that an accuracy of 5µm could be achieved in errors of the PCB holes allowing comparisons to be made. This is significant in inspecting the missing, the multi-hole and the incorrect location of the holes. However, previous work only focusses on one or other feature of the holes. Our research is able to assess multiple features: missing holes, incorrectly located holes and excessive holes. Equally, our results could be displayed as a bar chart and target plot. This has not been achieved before. These displays help users analyze the causes of errors and immediately correct the problems. Additionally, this AOI system is valuable for checking a large number of holes and finding out the defective ones on a PCB. Meanwhile, we apply a 0.1mm image resolution which is better than others used in industry. We set a detecting standard based on 2mm diameter of circles to diagnose the quality of the holes within 10 seconds.
Otek AOI is an Automatic Optic Inspection Equipment developed and manufactured by the GFirst OEIC Co., Ltd., in Xiamen, China. Given the level of operators and the practical manufacturing environment they work in, the design tenet of Otek AOI is its
Inspection of low, medium & high volume surface mount & thru hole technology. AOI Systems ScanSpection uses two basic algorithm groups to inspect component and soldering. The first algorithm checks the component related parameters at once, with the
Career Center | Melbourne, Florida USA | Production
The SMD Repair / Operator performs all hand loading/unloading/operation of SMD line, manual soldering of Through-hole parts, inspection of PCBA's, and rework as required to support SMD production. Responsibilities: - Assists with manually load
Used SMT Equipment | General Purpose Test & Measurement
Takaya APT-820S Flying Probe Tester Model: APT-820SYear of Manufacture: 2007Serial number: V7F56002Protection: IP-4X2 movable probes for medium board sizes up to 255 mm x 330 mmVoltage: 220V, AC, Single Phase, 50/60 HzPower: 2.0 kVAMade in Japan 100%
Career Center | Fremont, California USA | Production
NRC Manufacturing, is a small, tight knit operation looking for a capable and knowledgeable SMT Machine Programmer. Experience and skill are important to us, and we’re looking for someone that can hit the ground running and knows their way arou
Used SMT Equipment | AOI / Automated Optical Inspection
This AOI was purchased for $49,995 from Manncorp. The Sherlock AOI is in excellent condition and has under 200 hours of usage. The Sherlock AOI Systems detect a comprehensive range of defects and errors in PCB assembly using the Sherlock PCB ins
Industry Directory | Consultant / Service Provider
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