I. Kev Taw Qhia
Hauv kev lag luam automation, RTUs (Chaw Taws Teeb Chaw Taws Teeb) thiab PLCs (Programmable Logic Controllers) yog ob hom kev tswj hwm. Thaum lawv txhua tus ua lub luag haujlwm tseem ceeb hauv kev lag luam automation systems, muaj qhov sib txawv tseem ceeb ntawm lawv nyob rau hauv cov nqe lus ntawm kev ua haujlwm, kev siv scenarios, thiab cov qauv tsim. Tsab ntawv xov xwm no yuav muab cov ncauj lus kom ntxaws txog cov ntsiab lus, cov yam ntxwv, thiab daim ntawv thov scenarios ntawm RTUs thiab PLCs, nrog rau qhov zoo sib xws thiab qhov sib txawv ntawm lawv, los pab cov neeg nyeem kom nkag siab tob dua ntawm ob lub cuab yeej no.
II. Kev txhais, yam ntxwv, thiab daim ntawv thov scenarios ntawm RTUs
Txhais
RTU, luv luv rau Chaw Taws Teeb Chaw Taws Teeb, yog ib qho khoom siv hluav taws xob tau teeb tsa ntawm qhov chaw nyob deb los saib xyuas thiab ntsuas cov ntsuas ntsuas thiab cov khoom siv nyob ntawd. Ib qho RTU hloov pauv cov xwm txheej lossis cov cim qhia rau hauv cov ntaub ntawv tsim nyog rau kev sib kis ntawm kev sib txuas lus xov xwm, thiab hloov cov ntaub ntawv tau txais los ntawm lub khoos phis tawj nruab nrab rau hauv cov lus txib los tswj kev ua haujlwm ntawm cov khoom siv.
Nta
(1) Muaj peev xwm sib txuas lus muaj zog: RTUs feem ntau muaj peev xwm sib txuas lus zoo thiab muaj peev xwm khaws cia loj dua, ua rau lawv haum rau qhov kub thiab av noo ib puag ncig thaum muab kev suav ntau dua. Lawv txhawb cov khoom siv sib txuas lus wireless (xws li Wi-Fi, 4G, thiab lwm yam) txhawm rau ua kom cov ntaub ntawv xa mus rau cov chaw taws teeb thiab tswj.
(2) Siab Durability: Raws li kev ruaj khov ntawm -qhov chaw ntse processor, RTU tuaj yeem ua haujlwm ruaj khov hauv cov chaw lag luam hnyav, ua kom cov ntaub ntawv raug thiab kev ntseeg tau.
(3) Kev Txawj Ntse Qib Siab: Cov RTUs txawj ntse tuaj yeem tshawb xyuas kev cuam tshuam kev sib txuas lus thiab pib txuag cov ntaub ntawv tam sim ntawd rau kev nco, yog li ua kom muaj txiaj ntsig zoo tshaj plaws ntawm kev sib txuas lus.
Daim ntawv thov Scenario
RTUs muaj ntau daim ntawv thov hauv kev lag luam automation, suav nrog cov roj thiab roj, kev txuag dej, hluav taws xob xa hluav taws xob, thiab kev lag luam xa hauv nroog. Lawv tau siv rau lub sijhawm tiag tiag - saib xyuas thiab tswj cov cuab yeej siv hauv kev lag luam, kev txhim kho kev tsim khoom thiab txo cov nqi tsim khoom.
III. Lus Txhais, Nta, thiab Daim Ntawv Thov Scenario ntawm PLCs
Txhais
PLC, luv luv rau Programmable Logic Controller, yog lub tshuab hluav taws xob digital tshwj xeeb tsim los rau kev lag luam ib puag ncig los tswj kev ua haujlwm ntawm cov khoom lag luam. PLC siv lub cim xeeb programmable los khaws cov lus qhia rau kev ua haujlwm zoo, kev tswj xyuas raws sijhawm, sijhawm, suav, thiab lej lej, thiab tswj ntau hom khoom siv tshuab lossis cov txheej txheem tsim khoom los ntawm digital lossis analog inputs thiab outputs.
Nta
(1) High Flexibility: PLCs siv lub programmable nco, tso cai rau cov neeg siv sau cov kev tswj xyuas kom haum rau cov kev tswj tshwj xeeb, yog li ua kom cov tswv yim tswj tau yooj yim.
(2) Kev ntseeg siab: PLCs muaj cov qauv tsim qauv thiab tus kheej- muaj peev xwm kuaj mob, ua rau lawv tshawb xyuas sai thiab daws qhov tsis raug, ua kom muaj kev ua haujlwm ruaj khov.
(3) Kev Tu Kom Yooj Yim: Cov lus programming ntawm PLC yog qhov yooj yim thiab yooj yim rau kev kawm, ua qhov programming, hloov kho, thiab debugging sai thiab yooj yim, yog li txo cov nqi kho.
Daim ntawv thov Scenario
PLCs yog dav siv nyob rau hauv ntau yam kev lag luam tswj teb, xws li machinery manufacturing, chemical engineering, fais fab tuag, thiab metallurgy. Lawv siv los tswj cov cuab yeej ua haujlwm, saib xyuas cov khoom siv raws li txoj cai, thiab kho cov khoom siv tsis zoo, yog li txhim kho kev tsim khoom thiab txo cov nqi tsim khoom.
IV. Zoo sib xws thiab qhov sib txawv ntawm RTUs thiab PLCs
Zoo sib xws
(1) Ob leeg yog cov cuab yeej tswj xyuas tseem ceeb hauv kev lag luam automation, siv los tswj thiab tswj cov cuab yeej siv khoom lag luam.
(2) Ob leeg yog programmable, tso cai rau cov neeg siv sau cov kev tswj hwm raws li kev tswj hwm sib txawv.
(3) Ob leeg txhawb nqa digital lossis analog input / output, ua kom muaj kev tswj xyuas cov khoom siv.
Qhov txawv
(1) Keeb kwm thiab daim ntawv thov Scenarios: PLCs originated nyob rau hauv ntau lawm kab automation thiab feem ntau yog siv nyob rau hauv cov khoom siv kho tshuab ntau lawm kab; RTUs originated nyob rau hauv cov roj thiab roj ntau lawm thiab feem ntau yog siv rau tej thaj chaw deb saib xyuas thiab tswj cov khoom muaj.
(2) Kev Ua Haujlwm thiab Tsim: PLCs feem ntau yog siv rau cov kab ntau lawm sab hauv lossis chaw nres tsheb tswj, feem ntau yog siv cov xov tooj sib txuas lus (xws li RS485, CAN, thiab lwm yam), nrog cov ntaub ntawv ua haujlwm yooj yim; RTUs, ntawm qhov tod tes, feem ntau yog siv rau kev tswj cov khoom siv sab nraum zoov, feem ntau siv kev sib txuas lus wireless (xws li Wi-Fi, 4G, thiab lwm yam), nrog rau cov ntaub ntawv muaj peev xwm ua tau zoo dua uas ua kom muaj peev xwm ua tau tiag - lub sijhawm saib xyuas cov teeb liab los ntawm ntau lub sensors thiab cov khoom siv.
(3) Kho vajtse thiab Software: PLC kho vajtse thiab software feem ntau yog muab los ntawm tib lub chaw tsim khoom, thiab lawv cov txheej txheem kev sib txuas lus feem ntau yog tus tswv; RTUs, txawm li cas los xij, tuaj yeem muab los ntawm cov tuam txhab sib txawv, yog li lawv xav tau kev sib txuas lus thoob ntiaj teb los txhawb kev sib koom tes ntawm cov khoom siv los ntawm cov neeg muag khoom sib txawv.
V. Summary
Raws li ob qho tseem ceeb tswj cov cuab yeej hauv kev lag luam automation, RTUs thiab PLCs nthuav tawm qhov sib txawv tseem ceeb ntawm kev ua haujlwm, kev siv cov xwm txheej, thiab cov qauv tsim. RTUs tsom ntau dua rau kev saib xyuas cov chaw taws teeb thiab kev tswj hwm thiab tsim nyog rau kev lag luam hnyav; PLCs, ntawm qhov tod tes, tsom ntau dua rau cov kab ntau lawm automation tswj thiab tsim nyog rau qhov chaw nyob sab hauv tsev. Hauv kev siv cov tswv yim, peb yuav tsum xaiv cov cuab yeej tswj kom tsim nyog raws li kev tswj hwm tshwj xeeb thiab ib puag ncig kom ua tiav cov txiaj ntsig tswj tau zoo.