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Automated Optical Inspection (AOI) Systems for PCB Manufacturing

Date: 5/22/2019 12:00:00 AM


Location: Israel 

Background Information

Automated optical inspection (AOI) systems perform visual inspections of printed circuit boards (PCB) during manufacturing in which a camera is used to scan the board in extremely fine detail to check for any defects or failures. AOI is the integration of optics, mechanics, electronic control, and software to replace the human eye. In the real world, PCBs are getting smaller and more complex; even a relatively simple board can be made up of literally thousands of soldered components. AOI monitors the quality of PCB production and corrects them in the process flow, which is a key to success in today's competitive PCB production environment.

System Requirements

AOI systems are commonly used in the production of all kinds of products but are especially important for monitoring printed circuit boards for defects and accurate measurements beyond the capabilities of a human inspector. They are able to detect a variety of surface feature defects, such as nodules, scratches, stains, open circuits, and the thinning of soldered joints. However, the development of an AOI system for PCBs is unlike an AOI general purpose system. There are some specific features that are only for the development of an AOI system used for PCB manufacturing. To provide truer co-planarity inspection capabilities and volumetric inspection data, an AOI system requires different types of cards to connect to devices such as robotic arms and CCD cameras. For the AOI system to keep pace with increasing manufacturing speeds, a powerful Graphics Processing Unit (GPU) card is needed.


System Description

Because of technological improvements, AOI systems can now very accurately detect defects with only a small number of failures. The Advantech ASMB-923 motherboard provided a powerful computing solution to fulfill the cutomer’s needs. The ASMB-923 motherboard is an EATX server board with dual Xeon® E5-2600 v3/v4 processor supporting 8 x DIMMs and up to 256 GB of memory operating at 0 ~ 40°C ambient temperature ranges.

When comparing the speed, efficiency, and flexibility of other test and inspection methods, the benefits of AOI are clear; using a powerful GPU card was key to speeding up the inspection process. The Advantech ASMB-923 server motherboard supports four PCIe x16 slots (Gen3), two PCIe x8 slots (Gen3.0), and one PCIe x4 (Gen2.0). It can support other GPU cards and other PCIe cards such as COM and NIC cards. The Advantech HPC-7282 2U rackmount server chassis was used as it can support ATX/CEB/EATX motherboards with eight hot swap SAS/SATA drive bays.

Key Features

  • 7-years product longevity product support
  • Advantech ASMB-923 motherboard supports up to 7 x full-length single deck or 4 x double deck (PCIe x16 link) expansion cards for high-end critical use
  • Advantech HPC-7280 chassis supports 0 ~ 40°C ambient operating temperature range

Why Advantech

Investing in AOI systems means less waste, a lower cost of production, and maximized yields. Advantech server boards not only deliver the necessary power for the AOI system, they also work in a 0 ~ 40°C temperature ranges. Another reason why the customer chose Advantech was the continued support beyond the longevity product life of up to seven years. We believe that our server motherboards and industrial computer chassis will meet both the current and future needs of AOI customers.

Related Product

ASMB-923

Dual LGA 2011-R3 Intel® Xeon® E5-2600 v3/v4 EATX server board with DDR4, 4 PCIe x16+ 2 PCIe x8(Gen 3.0)

HPC-7280

2U rackmount chassis for EATX serverboard with 8 x hot-swappable hard drive cages