I. Kev qhia lus
Raws li ib qho ntawm cov tshuab tseem ceeb hauv kev lag luam automation, faib cov kev tswj hwm (DCS) tau siv dav thiab kev tsim txiaj sai ntawm kev tswj hwm thiab kev tswj hwm kev tswj hwm. Hauv daim ntawv no, lub hauv paus ntsiab lus thiab cov yam ntxwv ntawm cov kev tswj hwm nruab nrab yuav tau tham hauv qhov tob, kom muab kev nyeem meej thiab nkag siab.
Ii. Kev txhais thiab lub ntsiab cai ntawm kev sau - faib cov txheej txheem tswj
Faib cov txheej txheem (DCS) yog lub cim kev tswj hwm tshiab raws li microprocessor, kev tswj hwm hauv nruab nrab thiab kev coj ua tus qauv ntawm kev lag luam ntawm kev lag luam thiab kev sib koom tes. Nws yog multi -} theem cov txheej txheem kev sib txuas lus thiab cov txheej txheem kev tswj hwm qib xws li khoos phis tawj, kev sib txuas lus, zaub thiab tswj.
Tus txheej txheem tseem ceeb ntawm DCS lus dag nyob rau hauv nws txoj cai tswj hwm thiab cov qauv tswj hwm. Tag nrho cov kab ke ua cov txheej txheem ntau - qib tswj cov qauv ntawm qib, piv txwv li txheej txheem tswj hwm qib thiab kev tswj hwm ntau lawm. Qib txheej txheem tswj hwm yog lub luag haujlwm rau ncaj qha tswj hwm cov txheej txheem ntau lawm ntawm lub xaib, thiab hloov kho ntau cov txheej txheem ntau ntawm lub microprocess. Qib xyuas kev saib xyuas yog lub luag haujlwm yog lub luag haujlwm rau kev saib xyuas cov xwm txheej ntawm tag nrho cov txheej txheem tswj hwm, thiab nqa tawm cov txheej txheem tswj thiab kev tswj hwm. Qib kev tswj hwm ntau lawm yog tag nrho cov txheej txheem txheej txheem npaj, teem sijhawm thiab ua kom tiav, kom ua tiav qhov kev ua tau zoo ntawm cov txheej txheem ntau lawm.
III. Cov yam ntxwv ntawm Central tswj system
Kev tswj hwm kev tswj hwm: DCS decentalizes kev tswj hwm ua haujlwm rau txhua tus microprocessor, paub txog kev tswj hwm ntawm cov txheej txheem ntau lawm. Qhov kev tswj hwm kev tswj hwm no ua rau cov kab ke txhim khu kev qha thiab hloov tau, txawm tias lub microprocessor tsis ua, nws yuav tsis cuam tshuam rau kev ua haujlwm ntawm tag nrho cov kab ke.
Kev ua haujlwm hauv nruab nrab: txawm hais tias cov tswj kev tswj hwm yog decentalized, DCS txuas txhua lub microprocess sib txuas lus los ntawm kev sib txuas lus network ua haujlwm kom ua tiav kev ua haujlwm thiab kev tswj hwm ntawm cov txheej txheem ntau lawm. Qhov no ua rau nws yooj yim rau cov neeg ua haujlwm saib xyuas thiab ua haujlwm rau cov txheej txheem ntau lawm, txhim kho kev ua tau zoo.
Hierarchical tswj: DCS pom tau cov kev tswj hwm hierarchical ntawm cov txheej txheem ntau lawm los ntawm kev ua kom muaj ntau {}} qib tswj cov qauv. Hom kev tswj hwm no ua rau lub kaw lus yooj yim dua thiab muaj txiaj ntsig, thiab nws tuaj yeem hloov kho thiab kho raws cov khoom tsim ntau lawm.
Cais cais tab sis autonomous thiab muaj kev sib haum xeeb: Ntau yam ntawm DCS yog ob qho tib si ywj pheej thiab sib koom ua ke, paub txog kev sib cais, ua kom sib haum xeeb thiab kev sib haum xeeb. Qhov no ua rau lub kaw lus ntau ruaj khov, txhim khu kev qha thiab hloov tau.
Kev ntseeg tau thiab kev nyab xeeb: DCS tau txais ntau yam kev tiv thaiv kev tiv thaiv, kev ua txhaum kev paub thiab rov ua txhaum, kom ntseeg tau tias txoj kev ntseeg tau thiab kev nyab xeeb ntawm lub system. Lub caij no, DCS kuj txhawb kev ua haujlwm xws li Backup kub thiab rov hloov mus rau cov khoom siv standby lossis cov khoom siv rov qab los txuas ntxiv cov haujlwm tsis ua haujlwm.
Qhib thiab nthuav dav: DCS Adopts architecture thiab qauv kev sib txuas lus sib txuas lus, uas ua rau cov kab ke muaj kev qhib siab zoo thiab nthuav dav. Cov neeg siv tau xaiv cov khoom siv sib txawv thiab cov software sib txawv raws li lawv cov kev xav tau kom paub daws cov kev teeb tsa hloov tau thiab nthuav dav ntawm cov kab ke.
IV. Daim ntawv thov thiab kev txhim kho ntawm Central Distribution System
Lub hauv paus thiab faib tswj kev tswj hwm tau dav hauv PetroCemical, Fais fab siv hluav taws xob, chaw muag tshuaj, thiab tau ua ib qho tseem ceeb ntawm cov ncej ntawm kev muaj tshuab kev lag luam. Nrog kev txhim kho kev ua lag luam cov thev naus laus zis thiab kev hloov pauv cov ntawv thov, DCS kuj tseem tab tab tab sis txhim kho. Ntawm ib sab tes, cov haujlwm thiab kev ua tau zoo ntawm DCS, xws li txuas ntxiv rau cov teb ntawm cov teb ntawm kev ntse thiab lag luam hauv Intelligenting thiab Industrial Intral.
V. Xaus
Nrog nws cov cim tshwj xeeb ntawm kev tswj hwm kev tswj hwm, kev tswj hwm hauv nruab nrab, Chaw Tswj Xyuas Kev Tsav Tsheb Nruab Nrab (DCS) ua lub luag haujlwm tseem ceeb hauv kev muaj tshuab kev lag luam. Los ntawm ib qho hauv - Qhov tob tob txog ntawm nws cov ntsiab cai thiab cov yam ntxwv, peb tuaj yeem pom meej dua qhov zoo thiab tus nqi ntawm DCS. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho kev ua lag luam ntawm kev siv tshuab thiab kev hloov pauv cov ntawv thov nws yuav ua tiav nws txoj haujlwm tseem ceeb hauv kev tsim khoom Automation thiab siv nyob rau hauv kev txhim kho dav dav.