At present, the application of machine vision technology is gradually deepening into various fields. After nearly 30 years of research and application, it greatly improved industrial production of PCB, improves the production level of intelligence and visualization, and has a considerable prospect.

  Compared with the domestic PCB factory, the development of machine vision technology in foreign countries is more rapid. So far, most of the domestic machine vision products are from abroad, forming a long-term dependence. With the development of industrial automation in China, people's more and more demand for machine vision products type of circuit boards, research and applicate more machine vision field. China's PCB factory circuit board production will be toward more automation, intelligence, integration direction development. At present, vision detection technology is an important application in the field of machine vision.

  In the past, detection mainly relies on the human eyes, this time-consuming, energy consuming, high cost detection method will gradually be eliminated, machine vision detection just to solve this problem. Approximate to the full automation of machine vision detection, it ensure the production speed of the product, and improve the detection accuracy and reliability, to ensure the quality of the product. The research on the visual inspection system of the gluing quality of the automotive sensor circuit board, which can detect the gluing quality of the circuit board, ensures the application of the PCB and the performance of the automotive sensor, and has far-reaching significance for the research and development of the automotive industry.