1992 Volume 46 Issue 3 Pages 359-365
DCS (Distributed Control System) is now widely used in the process industry field, driving out analog panels from centralized control rooms.
However there are still unsatisfactory parts in the system functions such as control softwares, human-machine interfaces and system structures.
Considering the history and the future trend of the instrumentation, some items to be improved or to be noted are described in this paper.