Steel ruler detection system and method based on machine vision and PSD laser ranging

The invention relates to the technical field of steel ruler measurement, in particular to a steel ruler detection system and method based on machine vision and PSD laser ranging, and the system comprises a detection platform which is provided with a central processing unit in an integrated manner, and a PSD measurement module, a motion control module, an upper computer module and an image processing module which are electrically connected with the central processing unit respectively; a guide rail is arranged on one side of the surface of the detection platform, a support structure is connected to the guide rail in a sliding mode, and the image processing module comprises an industrial camera and light source equipment and is installed on the support structure; and the upper computer module consists of user terminal equipment and a memory which are communicated with each other through a data link. According to the invention, machine vision is adopted to position scale lines and identify steel ruler numbers, a