What is the difference between centralized control rooms and centralized DCS?

Both centralized control rooms and DCS centralized control refer to centralized control methods for control systems, but there are certain differences between them. Centralized control room typically refers to the installation of all control devices and instruments in a separate control room, where operations and monitoring are carried out through a central console located within that room. This approach is common in cases where the control system is relatively small and has few control points. DCS centralization refers to the consolidation of control points scattered across various production sites into a single main control center, where control and monitoring are carried out through computer programs to enable remote operation. This approach is suitable for situations where the control system is complex and the control points are distributed over a large area. As for the installation method of instruments, there is no significant difference between centralized control rooms and DCS systems; the appropriate approach is chosen based on the specific circumstances and requirements. .

Does the instrument mentioned by the poster refer to a physical instrument or a virtual one? For physical instruments, the installation locations include on-site installation, installation in on-site cabinets, and installation in a central control room. The installation location must be a specific place; it cannot be within a certain system such as DCS or SIS. If it is a virtual instrument, it means that this function is implemented somewhere, such as in a DCS or in an SIS. Therefore, it is confusing that a certain instrument is ‘installed’ in the DCS.

In terms of instrument installation, centralized control room (CRI) and DCS-based centralized installation are two different methods. The main differences lie in the following aspects: Centralized control rooms (CRI) generally refer to centralized control systems such as traditional PLC (Programmable Logic Controller) systems, where the control room serves as the hub for gathering signals from the control elements at the production site, so that data processing, operational control, and monitoring can be carried out there. DCS, or Distributed Control System, refers to a decentralized digital control system; it is a fully digital control method that utilizes a Distributed Control System to achieve precise control of the production process at multiple points and at various levels. The characteristic of Centralized Control Room (CRI) is its concentration on the production line; it is suitable in situations where there are few personnel on site, a high degree of modularity exists, the number of control levels is low, and the response speed is relatively slow ； In contrast, DCS has a distributed structure, enabling the networking of large numbers of devices; it offers cost advantages as well as higher system accuracy and reliability, making it suitable for production environments that require efficient control. In practical applications, the choice between centralized control room (CRI) and DCS-based control depends on the specific production process and control requirements, as well as factors such as technology and economics. Generally speaking, in modern large-scale industrial enterprises where high demands are placed on stability, reliability, and automation levels, DCS centralized control systems are given priority. CRI is more suitable for small production lines or simplified production process control