AOI stands for Automated Optical Inspection, which is a quality control system used in electronics manufacturing. Think of it as an automated quality checker that uses special cameras and lighting to look for defects on circuit boards and electronic components. Instead of having people manually inspect every product with magnifying glasses, AOI machines do this job automatically, making the inspection process faster and more reliable. This technology is similar to having a very sophisticated digital camera system that can spot even tiny errors that human eyes might miss.
Managed AOI systems for quality control in PCB assembly line
Reduced defect rates by 40% through optimizing AOI programming and setup
Trained production staff on AOI operation and basic maintenance
Implemented new Automated Optical Inspection protocols for high-volume manufacturing
Typical job title: "AOI Operators"
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Q: How would you implement an AOI system in a new production line?
Expected Answer: Should discuss planning phases, equipment selection, training requirements, creating inspection criteria, and integrating the system with existing quality control processes. Should mention cost considerations and ROI calculations.
Q: How do you handle false positives in AOI testing?
Expected Answer: Should explain methods for fine-tuning inspection parameters, balancing sensitivity levels, and creating verification procedures. Should discuss documentation and continuous improvement processes.
Q: What factors affect AOI system accuracy?
Expected Answer: Should mention lighting conditions, component placement, programming parameters, maintenance schedules, and regular calibration needs. Should discuss how these factors impact inspection quality.
Q: How do you train new operators on AOI equipment?
Expected Answer: Should describe basic training procedures, common mistakes to avoid, safety protocols, and how to interpret inspection results. Should mention documentation and hands-on practice importance.
Q: What are the basic components of an AOI system?
Expected Answer: Should identify cameras, lighting systems, conveyor mechanisms, and computer interface. Should understand basic operation principles.
Q: How do you perform daily maintenance on AOI equipment?
Expected Answer: Should describe basic cleaning procedures, system checks, and when to alert supervision about problems. Should understand basic troubleshooting steps.