The Design Of The Internet-based DSP Experiment System And The Research On The Real-time Property Of The NETLAB

NETLAB is a remote virtual laboratory based on Internet. It adopts the double C/S structure with three sites: client site, server site and control site. Multi-user can do different experiments at the same time via NETLAB. It is flexible and robust. NETLAB provides over 80 experiments, which can be divided into five categories and 20 experiment groups, for E.E. students. All these experiments are based on real physical equipments.This thesis focuses on the design and development of the DSP (Digital Signal Processor) experiment system and the research on the real-time performance of the NETLAB. With the extensive application of DSP technology, most of colleges and universities provide related courses of DSP, and developing the DSP experiment system in NETLAB is to meet the needs of laboratory equipments. The Real-time performance of NETLAB determines the effect of experiment. The higher real-time performance it has, the better effects the experiments will have.This thesis includes five parts.The first part introduces the concept and current research situation of virtual laboratories, and the meaning and backdrop of NETLAB.The second part describes the design of NETLAB, including the overall framework, the client framework features, and its experiments.The third part analyses the development features of the DSP experiment system in NETLAB firstly, and then illustrates the design and development of DSP experiment system based on TMS320LF2407 processor. The solutions about the problems occurred during the project development are also mentioned.The fourth part focuses on the research of the real-time performance of NETLAB. How to improve the real-time performance of network is always hot and a difficult issue and it is difficult to propose a universal method to solve the problem. The solutions to improve the real-time performance are referred according to the situation of the NETLAB, and are applied to the DC motor experiment system successfully.The fifth part summarizes the thesis and gives some advice for the future development of NETLAB.