关键词: 视觉检测, 对称器件, 倒反

Abstract: During the testing and packaging process of traditional discrete devices, the auto vision inspection system only detects plastic packages and lead defects. For symmetric devices, misplacement or incorrect place-ment may be a problem. The vision detection method proposed in the paper determines the direction of the devices by the marking codes. Experiment results show that the method effectively solve the problem and thereby improve the product quality.

Key words: vision inspection, symmetric device, incorrect placement