隨著自動化技術(shù)的發(fā)展，起初的PLC控制器已經(jīng)不能滿足一些大工程的要求，在這種情況下DCS控制 系統(tǒng)應(yīng)運(yùn)而生。dcs控制系統(tǒng)也稱集散系統(tǒng)，是相對于集中式控制系統(tǒng)而言的一種新型計算機(jī)控制系統(tǒng)，它是在集中式控制系統(tǒng)的基礎(chǔ)上發(fā)展、演變而來的。在系統(tǒng)功能方面，DCS和集中式控制系統(tǒng)的區(qū)別不大，但在系統(tǒng)功能的實現(xiàn)方法上卻完全不同。
 所謂的DCS即分布式控制系統(tǒng)在國內(nèi)又稱之為集散控制系統(tǒng)，具體不再多說，下面講一下新手如何學(xué)習(xí)dcs系統(tǒng)，這是所有接觸dcs行業(yè)新手共同面臨的問題，下面我就對DCS談?wù)勛约旱囊恍┛捶ǎ?br />  對于DCS，主要關(guān)心以下幾個問題： 各部分網(wǎng)絡(luò)的通信協(xié)議；冗余（服務(wù)器，電源，主控
制器，重要I/O模塊）；如何配置，I/O的輸入輸出特性。I/O常用的有模擬量輸入AI，模擬量輸出AO，開關(guān)量輸入DI，開關(guān)量輸出DO。此外還有SOE，PI等。其中AI信號有RTD（熱電阻信號），TC（熱電偶信號），4-20MA信號（也可以是0-20MA，0-5V）。了解完這些，接下來就是學(xué)習(xí)組態(tài)，多練練修改控制方案，給主控制器下裝方案（不影響生產(chǎn)的情況下進(jìn)行）。
  再者就是軟硬件結(jié)合理解，在實際面對控制現(xiàn)場生產(chǎn)，你很快便會入門。在此以后可以學(xué)習(xí)DCS系
統(tǒng)與PLC的通信，MIS，SIS。
  對理論知識的建議：自動控制原理（不用深究，了解到PID即可，因為就算是很基本的PID，現(xiàn)場也未必能投上自動）；常用編程語言（FBD，LD等），這個在組態(tài)的過程中自然就學(xué)會了；模擬電路和數(shù)字電路初步，這個也不用深入；計算機(jī)知識，尤其是網(wǎng)絡(luò)知識，說到底現(xiàn)在DCS的發(fā)展完全是建立在計算機(jī)軟硬件飛速發(fā)展的基礎(chǔ)上的。 以上僅是南京睿派儀表對大家的一點(diǎn)簡析，希望對你初期學(xué)習(xí)能夠有所幫助。With the development of automation technology, the original PLC controller can not meet the requirements of some large projects. In this case, DCS control system came into being. DCS control system, also known as distributed system, is a new type of computer control system relative to centralized control system. It is developed and evolved on the basis of centralized control system. In terms of system functions, there is little difference between DCs and centralized control system, but the realization methods of system functions are completely different.
The so-called DCS, i.e. distributed control system, is also called distributed control system in China. I won't say more about it. Now let's talk about how novices learn DCS system, which is a common problem faced by all novices in DCS industry. Here are some of my own views on DCS:
For DCS, the following issues are mainly concerned: the communication protocol of each part of the network; Redundancy (server, power supply, master control
Brake, important i/o module); How to configure i/o input / output characteristics. I/o commonly used analog input AI, analog output Ao, switching input Di, switching output do. In addition, SOE, PI, etc. AI signals include RTD (thermal resistance signal), TC (thermocouple signal), 4-20mA signal (also 0-20mA, 0-5V). After understanding these, the next step is to learn the configuration, practice and modify the control scheme more, and install the scheme for the main controller (without affecting the production).
Moreover, the combination of software and hardware is understood. In the actual face of controlling on-site production, you will soon get started. After that, you can learn DCS system
Communication between system and PLC, MIS, SIS.
Suggestions for theoretical knowledge: automatic control principle (it is OK to understand PID without deep study, because even if it is a very basic PID, it may not be able to be put into automatic on site); Common programming languages (FBD, LD, etc.) are learned naturally in the process of configuration; The analog circuit and digital circuit are preliminary, and there is no need to go deep into this; Computer knowledge, especially network knowledge, in the final analysis, the development of DCS is completely based on the rapid development of computer software and hardware. The above is just a brief analysis of Nanjing Ruipai instrument. I hope it can help you in your initial study.