Hauv kev lag luam automation, PLC (Programmable Logic Controller) thiab SCADA (Kev Tswj Xyuas Kev Tswj Xyuas thiab Cov Ntaub Ntawv Tau Txais) yog ob lub tshuab tseem ceeb. Txhua tus ua lub luag haujlwm tseem ceeb hauv kev lag luam automation, tab sis lawv kuj muaj qhov sib txawv tseem ceeb. Kab lus no yuav ua kom muaj kev soj ntsuam ntxaws thiab sib piv ntawm PLC thiab SCADA los ntawm ntau qhov kev xav.
I. Cov ntsiab lus thiab cov ntsiab lus
PLC (Programmable Logic Controller)
PLC yog lub tshuab hluav taws xob digital tsim tshwj xeeb rau kev lag luam ib puag ncig. Nws siv lub programmable nco los khaws cov lus qhia uas ua rau kev ua haujlwm zoo, kev tswj xyuas raws sijhawm, sijhawm, suav, thiab suav lej. Los ntawm digital lossis analog input / output interfaces, nws tswj ntau hom tshuab lossis cov txheej txheem ntau lawm. Lub PLC feem ntau muaj cov haujlwm ua haujlwm suav nrog CPU, kev qhia thiab cov ntaub ntawv nco, cov tswv yim / tso tawm interfaces, cov khoom siv hluav taws xob, thiab digital-rau-analog converters.
SCADA (Kev Tswj Xyuas Kev Tswj Xyuas thiab Kev Tau Txais Cov Ntaub Ntawv)
SCADA system yog lub khoos phis tawj-raws li kev sib koom ua ke software thiab cov khoom siv kho vajtse uas ua rau cov koom haum muaj kev lag luam los tswj cov txheej txheem kev lag luam hauv zos lossis nyob deb, saib xyuas, sau, thiab ua cov ntaub ntawv tiag - sijhawm. SCADA systems feem ntau cuam tshuam ncaj qha nrog cov sensors, li qub, twj, lub cev muaj zog, thiab lwm yam khoom siv, nkag mus rau cov ntaub ntawv lossis cov ntaub ntawv. Cov kab ke no tseem ceeb heev rau kev tswj hwm kev tsim khoom lag luam, ua cov ntaub ntawv rau kev txiav txim siab paub tseeb- ua, thiab sib txuas lus qhov teeb meem kom txo qis sijhawm.
II. Lub luag haujlwm tseem ceeb thiab nta
Lub luag haujlwm tseem ceeb thiab cov yam ntxwv ntawm PLCs
Logic Control:Lub luag haujlwm tseem ceeb ntawm PLC yog kev tswj xyuas logic. Nws ntiav cov haujlwm ua haujlwm xws li "AND," "OR," thiab "TSIS" kom ua tiav kev tswj xyuas kev tswj xyuas, kev tswj xyuas lub sijhawm, thiab kev tswj xyuas kev sib txuas lus.
Motion Control:PLCs siv cov txheej txheem tswj kev txav mus los los tswj txoj haujlwm, tshaj tawm, thiab nrawm rau cov kab tawm lossis ncig.
Kaw-Loop Process Control: PLCs ua kom kaw- voj tswj kev sib txawv ntawm qhov sib txawv ntawm qhov sib txawv xws li kub, siab, thiab ntws tus nqi.
Kev ua cov ntaub ntawv:PLCs muaj peev xwm ua cov ntaub ntawv, ua cov lej lej, cov ntaub ntawv sib piv, cov ntaub ntawv hloov pauv, thiab hloov cov ntaub ntawv.
Kev sib txuas lus Networking:PLCs tuaj yeem sib txuas lus nrog lwm PLCs, khoos phis tawj, thiab cov cuab yeej ntse los pauv cov ntaub ntawv thiab sib qhia cov peev txheej.
PLC programming feem ntau siv cov lus tshwj xeeb xws li Ladder Diagram, nrog cov qauv tsim interface tsom rau kev nthuav qhia kev tswj xyuas.
Lub luag haujlwm tseem ceeb thiab cov yam ntxwv ntawm SCADA
Tiag tiag - Sijhawm Saib Xyuas:SCADA systems muab lub sijhawm tiag tiag - saib xyuas cov khoom siv hauv kev lag luam, tshawb xyuas qhov ua tsis tiav thiab qhov tsis txaus ntseeg.
Kev Tau Txais Cov Ntaub Ntawv: SCADA cov tshuab sau ntau yam ntaub ntawv hauv teb- suav nrog qhov kub, siab, ntws tus nqi, thiab qhov hluav taws xob- khaws cia hauv cov ntaub ntawv.
Tswb Functionality: SCADA systems teeb meem tiag tiag -lub sij hawm ceeb toom ntawm cov khoom siv tsis ua hauj lwm los yog tej yam txawv txav.
Chaw taws teeb tswj:SCADA cov tshuab xa cov kev tswj hwm mus rau cov cuab yeej siv hauv kev sib txuas, ua kom muaj kev ua haujlwm nyob deb.
Cov Ntaub Ntawv Keeb Kwm Cia & Lus Nug:SCADA cov tshuab khaws cia thiab khaws cov ntaub ntawv keeb kwm yav dhau los rau kev tsom xam engineer thiab kev tsim cov txheej txheem ua kom zoo.
SCADA systems feem ntau siv siab - theem programming lus zoo li C, uas muaj cov neeg siv -cov phooj ywg interfaces uas nthuav tawm cov ntaub ntawv ntau lawm.
III. Daim ntawv thov Domains & Scenarios
PLC Daim Ntawv Thov Domains thiab Scenarios
Industrial Production Lines:PLCs tswj ntau yam khoom siv ntawm cov kab ntau lawm, xws li cov neeg hlau, cov hlua conveyor, thiab cov khoom siv pneumatic.
Smart Homes:PLCs tswj cov tshuab ntse hauv tsev, tswj cov cuab yeej siv hluav taws xob, tswj qhov kub thiab txias, teeb pom kev zoo, thiab lwm yam.
Automotive Electronic Control Systems:PLCs tswj cov tshuab hluav taws xob hauv tsheb, suav nrog cov cav, kev sib kis, thiab cov tshuab nres.
PLCs feem ntau yog ua haujlwm nyob rau hauv kev tswj xyuas tsis tu ncua, xws li cov khoom siv tswj tus kheej lossis cov kab ntau lawm.
SCADA Daim Ntawv Thov Domains thiab Scenarios
Factory Automation:SCADA tshuab tuaj yeem siv rau kev tswj cov txheej txheem, lub zog hluav taws xob, kev tswj ib puag ncig, thiab lwm yam hauv cov chaw tsim khoom.
Fais fab Systems:SCADA cov tshuab pom lawv daim ntawv thov dav tshaj plaws hauv cov tshuab hluav taws xob, ua rau kev saib xyuas thiab tswj cov khoom siv hauv teb.
Petroleum, Chemical, Metallurgical, thiab Related Fields: SCADA systems ua lub luag haujlwm tseem ceeb hauv kev nrhiav tau cov ntaub ntawv, saib xyuas, tswj, thiab tswj cov txheej txheem hauv cov haujlwm no.
SCADA feem ntau yog ua haujlwm hauv kev tswj xyuas tas li, xws li kev saib xyuas thiab tswj tag nrho cov txheej txheem tsim khoom lossis cov tshuab.
IV. Summary and Conclusion
Ob leeg PLC thiab SCADA ua lub luag haujlwm tseem ceeb hauv kev lag luam automation, tab sis lawv muaj qhov sib txawv ntawm kev ua haujlwm, tus yam ntxwv, daim ntawv thov npe, thiab cov xwm txheej. PLCs feem ntau tsom rau kev tswj hwm tus kheej ntawm cov khoom siv lossis cov kab ntau lawm, thaum SCADA cov tshuab hais txog kev saib xyuas thiab tswj tag nrho cov txheej txheem tsim khoom lossis cov tshuab. Hauv kev siv tswv yim, xaiv cov cuab yeej tsim nyog thiab kev daws teeb meem yuav tsum xav txog cov kev xav tau tshwj xeeb thiab cov ntsiab lus ua haujlwm. Kev nkag siab zoo thiab sib piv ntawm PLCs thiab SCADA systems muab kev txhawb nqa zoo rau kev nce qib thiab kev siv ntawm kev lag luam automation.