基于Web的并联雕刻机远程汉字雕刻技术

为实现资源共享和遥控作业，设计并实现了基于Web的并联雕刻机远程汉字雕刻系统，系统包括远动控制、雕刻控制和视频反馈3部分功能。采用监督控制方式以便减少网络延时对雕刻控制的影响，进程互斥原理解决了多用户同时雕刻的冲突，多线程和共享变量机制可保证雕刻作业的实时控制。为了适用不同类型的图像采集卡，基于JMF和IP组播两种方案分别实现了视频信息的连续传输。实验结果验证了该方法的可行性和有效性。

Web-based Remote Chinese Characters' Engraving Technology for Parallel Engraving Machine

To realize the functions such as resource sharing and teleoperation, the Web-based remote Chinese characters’ engraving system for parallel engraving machine is proposed. Three parts function, i.e. motion control, engraving control and video feedback, are provided by the system. Supervised control model is adopted to decrease the influence on engraving control as transmission delay, the sharing collision is prevented by applying mutual exclusion principle between progresses, the real-time control of engraving job can be guaranteed with multithread and shared variables mechanism. The real-time transmission of video information is implemented based on JMF(Java Media Framework) and IP multicast respectively for image acquisition card with different types. Experiment results show the feasibility and validity of the proposed methods.