Study On Laser Carving Control System Based On Image Processing

In recent years, with the rapid development of the laser and computer technique, laser-carving technique in processing field has got more extensive application. Now most of the laser-carving systems are only applied for carving graphics or binary images, and they have some limitation. This work will study a designed project of the laser-carving control system on the base of carving gray degree images, by which the carved images will have more gray degrees. And they can match with the original images better.This work is divided into two parts:One is to research the methods of the processing image, which is going to be carved. In this project, an image has 256 gray degrees with the format of BMP. On the base of the introduction of some traditional image processing methods, a kind of the digital image processing method, which is fit on the laser-carving characteristics, is emphasized on being introduced. After processing, the image is going to do the conversion of gray degrees. At last, a laser-carving image is generated.The other is to design and develop a laser-carving control system. This system adopts microcomputer control, and it consists of two parts: sport control part and laser carving part. The main contents of the first part are to realize some functions, such as making image previews, following the carving track dynamically in real time, generating control instructions, showing the carving position in time, realizing slow stop and sudden stop and going on and setting up or changing speed and returning along the original path and recording the stopping positions or working time. The contents in the second part are to design an electric circuit, which can control the power of the laser outputs. According to the gray degree value of each pixel, the correspondent dots can be carved in different deep. Finally, a finished product has been got.In addition, this paper analyzes the mechanism of out of step and gives a correspondent solution.