System to avoid errors during manual assembly operations using machine vision

An error detection vision system that determines whether a correct part is selected from a template device during an assembly process. In one embodiment, the presentation device is a rack with several containers, the containers holding a plurality of different parts. The vision system comprises one or a plurality of projection devices project a light beam in the direction of the master device, and a detector such. B. receives a camera, the reflections by a worker when selecting parts of the original device. The error detection vision system may use various detection processes such. As a stereo pair of video cameras, consider using triangulation with structured light and infrared runtime distance measurements.