When it comes to the control system, many people seem to have a clear idea. They continue to study it deeply. What is controller, what is PLC, what is DCS and what is FCS? After introducing the basic concepts in three or two sentences, I suddenly stop talking and feel dull and stiff. Today, Zhejiang University central control DCS card editor to challenge this boring topic, what is DCS?
We can make it clear that DCs is a typical control system with a long history. The control system is divided into upper and lower computers, the upper computer configuration focuses on GUI (graphical user interface), and the lower computer configuration focuses on algorithm.
A friend may ask what is configuration?
In fact, configuration is to build the software and hardware environment of the system. To put it simply, configuration is to combine more complex functions with existing simple functions.
What are the upper and lower computers?
For example: imagine developing a control system yourself. The first thing to do is to tell the computer what it wants to do, and then the computer tells the controller, and then the controller tells the actuator how to do it. In fact, I only have a dialogue with the computer. The computer here is the upper computer, and the controller receiving the computer's instructions is the lower computer.
In fact, computers and controllers are computers in essence, but the differences in external forms of expression, application environment and programming methods lead us to adopt some easy to understand naming methods. The upper computer needs to interact with people, so it pays more attention to GUI, and has human-computer interaction devices such as display or touch screen, mouse and keyboard lamp peripherals. The lower computer needs to interact with the executive mechanism, so it focuses on algorithms. People need to write executable programs and download them to the lower computer. The instructions given by the upper computer trigger the execution of the lower computer program. The lower computer is more like a black box. People can't directly see each process and step in the execution process, but can only analyze the results, right, accurate, good or bad.
The above is a brief introduction about what DCS card is. I believe you all know something about it. If you want to know more, please click the DCS card of Zhejiang University http://www.qistar-garment.net Official website.