Light source alternate strobe synchronous camera shooting method and vision detection system

The invention relates to a light source alternate strobe synchronous camera shooting method and a vision detection system. The light source alternate strobe synchronous camera shooting method is characterized in that the vision detection system is arranged and comprises a camera, a spike filter, light sources, a trigger signal generating device, an image collecting card and an image processing module; the vision detection system is placed above an object to be detected; the trigger signal generating device simultaneously sends multi-way synchronous square signals to a camera shutter and each of the light sources to trigger the camera shutter and the light sources to work; during one trigger period of the synchronous square signals, the light sources are alternately lightened to irradiate the object to be detected, during the period that each of the light sources is lightened, the camera shoots an image of the light source irradiated object to be detected and sends the image to the image processing module through the image collecting card; and during different trigger periods of the synchronous square signals, the light sources are alternately lightened or extinguished in certain frequency periods, and the camera alternately shoots images of the object to be detected until all the images of the object to be detected are collected. The light source alternate strobe synchronous camera shooting method and the vision detection system can be widely applicable to processes that objects to be processed are subjected to image shooting during groove detection, rear-time welding seam tracking, welding seam molding quality detection and the like in robot automatic welding.