||An Internet and Web Based Remote Micro-Controller System|
Jia-Sheng Hsieh★ Whei-Min Lin★★
Institute of Electrical Engineering
National Sun Yat-Sen University
With the development of new technologies, extending the techniques from local control to remote control with the public communication media becomes worldwide issues. In the hardware aspect, this research designed the T-RMC (Twin-Remote Micro controller) system to reduce hardware cost. This Fore-Processor can simulate Programming Logical Controller (PLC), to accomplish function of data acquisition and data transmission. The design features low cost、 high stability, with remote data transmission, and easy expansion. The system functions are now designed with one point to one point communication, so in the future work, this system will be expanded to become one point to multi-point or multi-point to multi-point control system.
Anther topic of this thesis is to develop a GUI (Graphical User Interface) suitable for Internet based supervisory control systems. In addition, the thesis presents the use of some CGI (Common Gateway Interface) programs, and the technique of embedded G programming (Graphic programming) into the homepage. The operator can operate the system easily by using friendly GUI.
Examples of two applications were used to show that the T-RMC system was accomplished successfully. The experimental results have demonstrated the capabilities of the supervisory control system through LAN or Internet. One is the Remote Multi-channel Analog/Digital Signal Acquisition System, and the other is the Internet-Based Remote Scheduling Agent System. These systems can manage and control the conventional household or industrial electric equipment, to achieve the goal of energy conservation.