Cdma-based Wireless Dcs Systems Research

With the development of industrial automation, Distributed Control System (large, medium and small scale) is applied widely in the field of petrochemical industry and electric power etc. The Conventional DCSs are connected all by wire line (industrial LANs) between process control level and control management level, and between process control level and field apparatuses.But under some circumstances, such as bad terrain, where it is difficult to pave wire line, where an emergency happens and need to build network quickly, where information security is desired and where lower cost is desired, wireless DCS will be a better solution.Based on the characters of DCS and CDMA, this paper proposes a wireless DCS based on CDMA, and it introduces the architecture and circuit design of this system. Significantly this paper studies the issues about the realization of the base-band processing of this system using FPGA.At last, this paper gain a perspective on the progress of the wireless DCS based on CDMA.