关键词: DCS系统, 冲突自调整, 上位机通信

Abstract:

In simultaneous communication between PC and lower position machines in large DCS equipments,the DCS PC may receive multiple instructions from several machine controllers at the same time,forming conflicts in the time domain signals thus lowering the success rate of communications between the DCS system PC and terminals.In order to solve this problem,this paper puts forward a large DCS equipment PC communication error elimination method.The algorithm takes advantage of a free time interval of effective filling method and the signal communications mechanism to solve the PC and controller conflict in time signals.Signal prediction testing technology is used to adjust the next time in advance to reduce the possibility of a conflict.The experimental results show that in large DCS systems this method can coordinate well the communication between PC and control terminals thus improving the success rate of multi-robot communication.

Key words: DCS system;conflict since the adjustment;PC communications