History Of The DCS
We can first make it clear that DCS is a typical control system form with a long history. The control system is divided into upper and lower computers, the configuration of the upper computer focuses on GUI (graphical user interface), and the configuration of the lower computer focuses on the algorithm.
Then what is the upper and lower machine?
As an example: imagine yourself developing a control system. The first thing to do is to tell the computer what it wants to do, then the computer informs the controller, and finally the controller tells the actuator what to do. I actually only talk to the computer here. The computer here is the upper computer, and the controller that accepts the computer's instructions is the lower computer.
1. Evolutionary history of DCS It is generally believed that in order to analyze the characteristics and differentiation of anything, two philosophical questions must be answered: 1) Where does it come from? Where to go? Similarly, if we want to know what is DCS and what is distributed, we cannot do without the evolutionary history and development direction of DCS.
Next, we will talk about the evolution and development of DCS from the impact of the four industrial revolutions on the process industrial control system. Help everyone to have a deeper understanding of DCS.
In the first industrial revolution, the age of steam, automatic control could only perform very simple functions. Calculated according to the physical point, only the current DI and DO can realize the functions: on and off, that is, the start and stop of a locomotive. The most is to achieve forward and reverse rotation and simple speed control with the participation of some peripheral mechanical equipment. The well-known Watt is recognized as the inventor of the steam engine, but in fact the steam engine appeared much earlier than Watt was born, and the earliest DCS was closely related to the steam engine.
The second industrial revolution, the era of electrification, the popularity of electronic equipment such as relays, people began to control some large-scale equipment on site. The improvement compared with the previous one is that, for example, a device is very large, and I don't have to climb on the device to start and stop the operation when I use the local control. Later, people still find it troublesome, because it is also troublesome to go from this device to that device to operate. So, put these buttons that need to be controlled in one room, and then install simple indicator lights. The operator stares at a lot of indicator lights on the display, ready to press the start and stop rows on the console at any time. button.
The third industrial revolution, the information age, with the development of electronic computer technology, the control system has been developing, forming a mature centralized control system, and now CCR (Central Control Room) can also be called a centralized control center. Why did it disperse later? Because people found that there will be many problems in centralized control. When the points are too centralized and the control scale is too large, if there is a problem with a certain critical path (module), a large control area may be paralyzed. This is a common problem of the centralized system, and it is a big one. Therefore, people consider dispersing the hardware a little, and disperse it near the control area, increase the operator station, and keep the CCR. Among them, the operator station handles the specific affairs of the site, and the CCR supervises the connection and coordination of the entire control area. People are still in the control room, but the whole system is more stable.
In addition, in order to improve communication efficiency, through perfection, a new race FCS (Fildebus Control System, Fieldbus Control System) has evolved, which means that you have to equip each or even each control component for communication. Similar to the role of a correspondent, the organization is too bloated and the team is too large, which leads to low efficiency, so one-to-one communication is cancelled, and everyone completes all communication work through a designated organization. This designated organization is Fieldbus (Fildebus).
Please feel free to ask for any inquires for your needs, we will submit our best price for all the original brand new items!
Do not hesitate, drop you messages and we will get back to you in any minute!
E-mail : sales1@amikon.cn
Mobile/WhatsApp/Skype: +86 18020714921
20DB015A0EYNANAEE |
20DB022A0EYNANANE |
20DB052A0EYNANANE |
20DC5P0A0EYNANBNE |
20DC650A0ENNBDANE |
20DC5P0A0NYNAEGNE |
20DC920A3ENNBDANE |
20DC920A3ENNBNANE |
20DC920N3ENNBDANE |
20F14NE242AN0NNNNN |
20F14NF012JN0NNNNN |
20F14NF020JN0NNNNN |
20F14NF034JN0NNNNN |
20F14NF061JN0NNNNN |
20F14NF142JN0NNNNN |
20F14NF263JN0NNNNN |
20F1AGC104AA0NNNNN |
20F1AGC104JA0NNNNN |
20G14NC302JN0NNNNN |
20G14NC367AA0NNNNN |
20G14NC456JA0NNNNN |
20G14ND125AA0NNNNN |
20G14ND156AN0NNNNN |
20G14ND186AA0NNNNN |
20G14ND186AN0NNNNN |
20G14ND248AA0NNNNN |
20G14ND248AN0NNNNN |
20G14ND248JN0NNNNN |
20G14ND302AA0NNNNN |
20G14ND415AN0NNNNN |
20G14NE023JN0NNNNN |
20G14NE077AN0NNNNN |
20G14NE077JN0NNNNN |
20G14NF046JN0NNNNN |
20G14NF050JA0NNNNN |
20G14NF050JN0NNNNN |
20G14NF082JN0NNNNN |
20G14NF098JN0NNNNN |
20G14NF119JA0NNNNN |
20G14TC540AN0NNNNN |
20G16NC022LNANNNNN |
20G16NC030LNANNNNN |
20G16NC037LNANNNNN |
20G16NC043LNANNNNN |
20G16NC060LNANNNNN |
20G16NC176LNANNNNN |
20G16NC205LNANNNNN |
20G16NC260LNANNNNN |
20G16ND014LNANNNNN |
20G16ND034LNANNNNN |
20G16ND125LNANNNNN |
20G16ND040LNANNNNN |
20G16ND096LNANNNNN |
20G16ND248LNANNNNN |
20G16NF046LNANNNNN |
20G16NF142LNANNNNN |
20G17NC022LNANNNNN |