基于数字图像处理的激光雕刻控制系统

Laser engraving control system based on digital image processing

针对传统激光雕刻控制系统的需要手动设定相关参数、激光雕刻控制过程复杂等弊端,设计一种基于数字图像处理的激光雕刻控制系统,给出系统总体结构,系统采用NC+PC结构模式,将激光雕刻机看作下位机,将PC机看作上位机,利用MPC02控制卡完成数据交换。将MPC02运动控制卡作为基本的控制元件,在WNI视窗环境下,通过C++语言进行模块化设计,将DSP+CPLD+USB+EEPROM的结构形式作为USB接口结构,电机选用混合式步进电机,最后进行激光管功率控制电路设计。软件设计时,采用模板匹配法实现数字图像细化,给出相应代码,将通过灰度转换得到的激光雕刻灰度图像数据翻译成雕刻运动指令代码序列。实验结果表明,所设计系统具有很高的运行效率和性能。

For traditional laser engraving need to manually set the related parameters of the control system, laser engraving control disadvantages such as complicated process, design a kind of laser engraving control system based on digital image processing, system general structure, system structure of NC ＋ PC mode, as the lower machine laser engraving machine, the PC will be considered a PC, using control MPC02 card to complete the data exchange. Will MPC02 motion control card as the basic control element, in WNI Windows environment, modular design, through the e ＋ ＋ language to the structure of DSP ＋ CPLD ＋ USB block ＋ EEPROM as USB interface structure, motor selection of hybrid stepping motor, finally to laser power control circuit design. Software design, template matching method is used to realize digital image thinning, given the corresponding code, gray level transformation will take laser engraving translated into gray image data movement instruction code sequence. The experimental results show that the designed system has high efficiency and performance.