Bailey DCS卡件 Controls TPS02 infi 90 Turbine Protection Slave Module
Bailey DCS卡件 Controls TPS02 infi 90 Turbine Protection Slave Module
Bailey DCS卡件 Controls TPS02 infi 90 Turbine Protection Slave Module
在全激勵(lì)DCS和全仿真DCS之間,存在著各種類型的虛擬DCS。由于DCS主要是由分散處理單元DPU(Distributed Process Unit)和操作員站人機(jī)界面HMI(Human Machine Interface)構(gòu)成的,相應(yīng)就有所謂 "虛擬DPU"和"虛擬HMI"的分類。虛擬 DPU、虛擬HMT以及部分虛擬的多種不同的排列組合,構(gòu)成了虛擬DCS的分類。對虛擬DCS的細(xì)致分類,有助于統(tǒng)一概念、明確規(guī)劃和應(yīng)用開發(fā),對研究和工程實(shí)踐都是非常必要的。這里列出的分類,可以說,除(1)和 (8)之外,都屬于虛擬DCS范圍。
(1)全激勵(lì)DCS──其DPU的數(shù)量及運(yùn)行軟件、HMI的數(shù)量及運(yùn)行軟件都和真實(shí)DCS**,僅需要為過程模型的連接開發(fā)接口軟件。目前國外使用的仿真系統(tǒng)、國內(nèi)迸口大型機(jī)組的仿真系統(tǒng),大多數(shù)采用這類*逼真的技術(shù)實(shí)現(xiàn)方案。
(2)zui小配置DPU+真實(shí)HMI──將原本分散的DPU軟件集中在一臺(tái)DPU上運(yùn)行,DPU硬件取zui小激勵(lì)配置,而DPU軟件需經(jīng)過一些虛擬改造,開發(fā)實(shí)時(shí)數(shù)據(jù)共享接口軟件,采用真實(shí)HMI,對運(yùn)行人員操作培訓(xùn)有*的逼真度。
(3)zui小配置DPU+仿真HMI──同樣DPU硬件取zui小激勵(lì)配置和DPU軟件虛擬改造,但HMI采用第三方的人機(jī)界面組態(tài)工具進(jìn)行開發(fā),在開放的計(jì)算機(jī)軟件和網(wǎng)絡(luò)平臺(tái)上實(shí)現(xiàn),對管理和檢修人員的在線使用有*的功能逼真度。
(4)虛擬DPU+真實(shí)HMI──為了避免復(fù)雜的DPU對過程模型接口軟件開發(fā),同時(shí)獲得豐富的再現(xiàn)DCS功能和高逼真度,可采用此類虛擬方案。
(5)虛擬DPU+虛擬HMI──這是*的虛擬DCS類型,無論DPU還是HMI,其虛擬軟件都是通過DCS的下載文件的智能編譯轉(zhuǎn)換而獲得的,這是節(jié)省投資、縮短開發(fā)周期、獲得zui高逼真度和zui多應(yīng)用功能的理想技術(shù)方案。
(6)虛擬DPU+仿真HMI──在HMI軟件無法實(shí)現(xiàn)智能編譯轉(zhuǎn)換的情況下,采用第三方的人機(jī)界面組態(tài)工具進(jìn)行開發(fā),將 HMI轉(zhuǎn)移到開放的計(jì)算機(jī)軟件和網(wǎng)絡(luò)平臺(tái)上實(shí)現(xiàn),對DPU則是采用虛擬的方法,這是對人員培訓(xùn)和在線檢測診斷都非常實(shí)用的技術(shù)方案。
(7)組態(tài)圖虛擬DPU+仿真HMI──如DPU和HMI的軟件都無法實(shí)現(xiàn)智能編譯轉(zhuǎn)換,實(shí)現(xiàn)虛擬的方法是針對組態(tài)圖軟件進(jìn)行仿真,在開放的計(jì)算機(jī)軟件和網(wǎng)絡(luò)平臺(tái)上單獨(dú)開發(fā)一套外觀和操作模式上與真實(shí)DCS十分接近的圖形化組態(tài)軟件,由系統(tǒng)人員或檢修人員迸行真實(shí)DPU和虛擬DPU的同步組態(tài)和同步修改,組態(tài)圖虛擬DPU生成軟件可輸出虛擬程序,并與過程模型的 HMI連接,實(shí)現(xiàn)虛擬DCS的功攤。
(8)全仿真DCS──這是目前國內(nèi)人員培刊仿真系統(tǒng)通常采用的技術(shù)方案。
各類虛擬DCS分類處于全激勵(lì)DCS和全仿真DCS之間,其逼真度、應(yīng)用功能和節(jié)省投資等三方面指標(biāo),符合圖2所示的分布關(guān)系。現(xiàn)在來看,虛擬DCS以其接近激勵(lì)DCS的逼真度、接近仿真DCS的應(yīng)用功能和zui節(jié)省的投資,表現(xiàn)出相對的綜合優(yōu)勢。
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