Vision monitoring feedback method for face exposure 3D printing

Abstract

The invention discloses a vision monitoring feedback method for face exposure 3D printing, and relates to the technical field of intelligent control and machine learning. The method comprises the steps that camera arranging position determination is conducted, specifically, the position of a camera is calculated according to the position of a face exposure projector, and the situation that monitoring is influenced by shot stray light is avoided; gray level changing curve obtaining is conducted, specifically, vision images of monitoring areas are automatically obtained at equal time intervals within the exposure time, accordingly, the equal-length image average gray level changing curve of each monitoring area is obtained, and through the experiment, forming curves generated when forming succeeds and forming curves generated when forming fails are obtained; and gray level curve recognition is conducted, specifically, the obtained successful forming curves and the obtained unsuccessful forming curves are classified through the KNN classification algorithm, testing is conducted for a classification result, the final K value in the KNN algorithm is obtained, the classification accuraterate is the highest, and the printing state is judged according to the classification result for controlling the motion of a mechanical system. By means of the vision monitoring feedback method for face exposure 3D printing, the printing material utilization rate can be increased, and the printing time is shortened.

Description

technical field [0001] The present invention relates to intelligent control and machine learning technology, in particular to processing the surface exposure image captured by the camera, and analyzing the brightness of the exposure area of ​​the captured image to obtain its forming curve. By combining the obtained curve with the classified samples The similarity comparison is carried out, so as to realize the research and implementation of the visual monitoring feedback method of face-to-face exposure 3D printing. Background technique [0002] The 3D printer was born in the mid-1980s and was first invented by American scientists. 3D printer refers to a device that uses 3D printing technology to produce real three-dimensional objects. Its basic principle is to use special consumables (glue, resin or powder, etc.) Each layer of powder is bonded and molded to finally print a 3D entity. Rapid prototyping technology is widely used in model making in the product development sta...

AI Technical Summary

Problems solved by technology

Among them, surface exposure printing forms one surface at a time, with fast printing speed and high precision. Digital light processing technology (DLP) is a kind of surface exposure printing, which is relatively mature and stable. The forming rate of 3D printing is generally between 70% and 80%. Only after the product is basically printed and formed can it be judged whether the product is qualified. Another time spent printing

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