基于因特网的STM远程实时控制系统的设计与实现

Design and Realization of the Remote Control System of STM Based on Internet

在分析因特网信息传输机制的基础上，采用TCP/IP协议和客户机/服务器模式实现了多用户远程分权控制STM(扫描隧道显微镜)仪器。分析了远程实时控制系统对设备硬件及网络带宽的要求，初步探讨了因特网远程实验过程中的网络与设备安全问题与解决方案。应用本软件系统可以对远程设备进行实时控制，同时用户与操作者之间可以进行任意两者之间的语音与视觉交流，从而实现了科学实验的设备无关性，突破了现有科学研究对操作时间与地点的限制，为大幅度提高现有设备的使用效率和创建新的科研模式奠定了基础。本系统成功地实现了北京-上海两地之间的远程演示。

Based upon the analysis of information transfer mechanism based on Internet, the remote control by classified multiple users of STM (scanning tunnel microscopy) is realized by use of TCP/IP protocol and client/server mode. The requirements of the equipment hardware and Internet bandwidth for remote real-time control are analyzed. The security problems and countermeasures of remote Internet experiments are primarily explored. Using the software package that is developed, the real remote control of the remote STM equipment can be actuated. During the experimental period, the users and the operator can communicate visually and audibly between arbitrary each other. These achievements suggest that the equipment irrelevance of scientific experiments can be realized, and the limitation of operation time and place is broken through, which can establish an infrastructure foundation to greatly improve the use efficiency of auto-control equipments and create novel scientific research mode. The system has been successfully demonstrated between Beijing and Shanghai.