Research On Laser Scanning Projection Path Optimization Method Based On Euler Circuit

The laser scanning projection technology utilizes the visual persistence that the light emitted by the laser is rapidly deflected by a high-speed deflection scanning galvanometer,in order to project the projected graphic in the digital model file onto the plane of projection.The technicians get more intuitive and practical information through the contour frame on the plane of projection,so that positioning and assembling components and parts can be more accurate and efficient.However,for a projection graphic with complicated shapes and lots of graphic features,the scanning of the entire image takes more time,resulting in flickering of the image observed by the human,which is not suitable for the auxiliary positioning operation for the manufacturing assembly site at all.In order to solve the above problems,in this paper,the laser scanning projection path optimization method based on the improved Fleury algorithm is proposed and studied to obtain the shortest scan path,to reduce the time to scan the image,and to improve the flickering problem of the self-developed laser scanning projection system.At the same time,the scanning inertia error correction method is studied in this paper,which eliminates the errors of tailing and corner.Firstly,the composition,working principle and flow of laser scanning projection system are studied.Combined with graph theory,a laser scanning projection path optimization strategy based on graph theory Euler circuit is proposed,and the specific process of path optimization is designed.At the same time,the DXF file structure is parsed,the iLect algorithm is designed and simulated,and the coordinates of the entities feature points such as in lines and rectangles in the digital model file of the graphic to be projected are extracted,which lays a foundation for the optimization of subsequent scan paths.Secondly,the Fleury algorithm solves the scan path of Euler graphs and involves the limitations of the Fleury algorithm that cannot optimize the scan path of non-Euler graphics.The improved Fleury algorithm can be applied to any projection graph,which is applied to the simulation of the connected non-Euler and non-connected graphs in this part to verify the feasibility of the algorithm.Then,the tailing error and corner error of the laser scanning projection system are analyzed and studied.Based on the established laser scanning projection system,the above correction method was applied to experiment,in order to obtain the optimal compensation time of the two errors,and the algorithm was written into the control software.Finally,the path optimization algorithm based on the Euler circuit is verified by experiments and the experimental results are analyzed.The experimental results show that the improved Fleury algorithm can effectively increase the scanning frequency by about 65%.This algorithm can effectively improve the scanning frequency of self-developed laser scanning projection system for complex graphics,make the display effect of laser scanning projection graphics better in order to to improve the frequency problem,and improve the practical engineering application value of the developed system.