The Development Of PCB Board Online Testing System Based On ARM

PCB serves as a very important role in electronic products,its quality has directimpact.To the productfunction,PCB quality in specting is completed now.Mostly frommisunderstanding and missed by artificial visual happened and misses.PCB industryneeds the online automation deteeting therefore urgently. Embedded image with theurgent needs of the rapid development of computer technology, and video applications,video capture technology has become the current development of a popular and one ofthe important research direction, and its application is currently a hot topic.The system hardware core embedded processor S3C2440, the software coreembedded operating system Linux2.6.12. This thesis, embedded systems, imageacquisition, image detection combined research and development of embedded imageacquisition to identify a USB camera, embedded system development board and thehost PC system. Thesis to complete the following tasks: Linux developmentenvironment configuration and device driver development, camera driver loaded, therealization of the video image acquisition program, the overall structures of imageacquisition module and debugging, as well as the realization of the image detectionmodule, including pre-processing, edge detection, PCB board positioning, the detectionand identification of the image.The design of the study based on ARM embedded PCB board online testing systemperformance is stable and reliable, real-time high for image acquisition, image detectionand other applications to provide a good service for future embedded PCB board onlinefurther research and development of detection systems have a better reference.