A new Distributed Processing Unit (DPU) based on ARM controller is presented, and the DPU redundancy design for DCS as well as the network redundancy design is analyzed.

• 介绍一种基于ARM控制器的分布处理单元，并基于这种处理单元分析了DCS控制系统的分布处理单元冗余设计和网络冗余设计。