| According to the development trend of industry control network and the communications characteristic in computer interlocking system and the characteristic of kinds of communication methods,I put forward the concept , principle and design method about ring network. And it makes computer interlocking system interchange data. According to the principle of ring network I constitute communication protocol .I designed the communication circuit, debugged it and simulated it in the light of communication principle and communication protocol of ring network on Xilinx's FPGA chip. I proved the reliability of data communication in ring network in theory, and validated real time communication according to simulation wave in ring network. |
