Automatic code spraying system and method

The invention relates to the technical field of automatic code spraying, and discloses an automatic code spraying system and method, the position of a product on a conveyor belt is determined by using a photoelectric induction technology of an inductive switch, a product picture is acquired by using a camera, and the code spraying position is determined and the code spraying quality is detected by carrying out image recognition and contrastive analysis on the image. The code spraying accuracy is improved, and the code spraying quality is ensured. According to the invention, whether the current product information is consistent with the preset product information is judged, so that the processes of sorting and respective code spraying according to the current product information are reduced, the equipment cost is saved, the code spraying accuracy is improved, and the code spraying efficiency is improved. After the image is utilized to identify the pre-code-spraying position, the height of the code spraying mac