I. Kev Taw Qhia
Relays, raws li cov khoom siv hluav taws xob tswj, ua lub luag haujlwm tseem ceeb hauv kev lag luam automation, tswj fais fab, kev sib txuas lus, thiab lwm yam. Lawv siv me me tam sim no los tswj qhov tam sim no loj dua, ua kom tsis siv neeg hloov hluav taws xob thiab tswj. Kab lus no yuav muab cov ncauj lus kom ntxaws txog cov hauv paus ntsiab lus thiab cov qauv ntawm relay tswj circuits los pab cov neeg nyeem kom nkag siab zoo dua lawv cov qauv kev khiav hauj lwm thiab cov ntawv thov scenarios.
II. Basic Structure ntawm Relays
Lub hauv paus qauv ntawm ib tug relay feem ntau muaj peb yam: lub electromagnetic system, kev sib cuag system, thiab tso tawm mechanism.
Electromagnetic System: Lub tshuab electromagnetic muaj xws li ib co coil, ib tug hlau core, thiab armature. Thaum lub kauj yog energized, nws generates ib tug electromagnetic quab yuam uas attracts lub armature rau cov hlau core, yog li hloov lub on / off lub xeev ntawm cov neeg.
Tiv tauj System: Lub kaw lus sib cuag muaj xws li txav cov neeg sib cuag thiab cov neeg nyob ruaj khov. Cov kev txav mus los yog txuas nrog lub armature; Thaum lub armature yog attracted los ntawm lub electromagnetic quab yuam, lub tsiv hu ua los yog tawg kev sib cuag nrog cov neeg nyob ruaj ruaj, yog li tswj lub Circuit Court lub on / off lub xeev.
Kev Tso Tawm Mechanism: Cov txheej txheem tso tawm feem ntau muaj cov khoom xws li cov springs. Thaum lub kauj yog de-energized, lub electromagnetic quab yuam ploj mus, thiab lub caij nplooj ntoos hlav thawb lub armature rov qab mus rau nws qhov qub txoj hauj lwm, rov kho cov neeg sib cuag mus rau lawv lub qub qub.
III. Basic Principles of Relay Control Circuits
Lub hauv paus ntsiab lus ntawm relay tswj circuits yog feem ntau raws li electromagnetic cuam tshuam thiab hloov nyob rau hauv lub on / off lub xeev ntawm cov neeg.
Txheej txheem cej luam ntawm Cov Cai Ua Haujlwm
Thaum lub zog tswj Circuit Court yog energized, lub kauj nyob rau hauv lub electromagnetic system generates ib tug electromagnetic quab yuam uas attracts lub armature rau kev sib cuag nrog cov tub ntxhais. Nyob rau ntawm lub sijhawm no, kev txav mus los hauv kev sib txuas lus ua rau kev sib cuag nrog qhov chaw nyob ruaj khov, ua kom lub zog ntawm kev tswj xyuas. Thaum cov tswj Circuit Court yog de-energized, lub electromagnetic quab yuam ploj, qhov tso tawm mechanism thawb lub armature rov qab mus rau nws qhov qub txoj hauj lwm, cov kev sib cuag qhib, thiab cov tswj Circuit Court yog de-energized.
Tiv tauj Xeev thiab Circuit Court Connection / Disconnection
Nyob rau hauv lub relay tswj Circuit Court, lub xeev ntawm kev sib cuag ncaj qha txiav txim seb lub Circuit Court yog kev cob cog rua los yog disconnected. Txawm hais tias cov neeg sib cuag tau qhib los yog ib txwm kaw nyob ntawm seb lub relay coil puas muaj zog. Thaum lub relay coil tsis energized, cov neeg uas nyob twj ywm qhib yog hu ua ib txwm qhib kev sib cuag, thaum cov uas nyob twj ywm kaw yog hu ua ib txwm kaw neeg. Thaum lub relay coil yog energized, ib txwm qhib kev sib cuag kaw, thiab ib txwm kaw kev sib cuag qhib; thaum lub relay coil yog de-energized, ib txwm qhib kev sib cuag qhib, thiab cov neeg uas ib txwm kaw kaw.
Hom Tsav Circuits
(1) Transistor Tsav Circuit Court
Lub transistor tsav Circuit Court yog ib txoj hauv kev rau kev tsav tsheb relays. Thaum cov tswv yim nyob rau theem siab, lub transistor saturates thiab conducts, energizing lub relay coil thiab ua rau cov neeg raug kaw; Thaum cov tswv yim nyob rau theem qis, lub transistor txiav tawm, de-energizing lub relay coil thiab ua rau cov neeg sib cuag qhib. Txoj kev tsav tsheb no muaj qhov zoo xws li kev tsim hluav taws xob yooj yim thiab siv hluav taws xob tsawg.
(2) Integrated Circuit Court tsav Circuit
Integrated circuit drives yog tsim rau cov ntawv thov uas xav tau kev tswj ntawm ntau lub relays. Los ntawm kev sib koom ua ke ntau tus tsav transistors, cov txheej txheem tsim hluav taws xob tuaj yeem ua kom yooj yim. Thaum cov tswv yim ntawm cov kev sib txuas ua ke yog nyob rau theem siab, cov khoom sib txuas tus pin tso tawm ib theem qis, ua kom lub zog ntawm cov relay coil thiab ua rau cov neeg sib txuas lus kaw; Thaum cov tswv yim nyob rau theem qis, tus pin cov zis sib txuas nkag mus rau qhov siab -impedance xeev, de- ua kom lub zog ntawm cov coil relay thiab ua rau cov neeg sib txuas lus qhib.
(3) Optocoupler-Triven Relay Circuit Court
Optocoupler-tsav relay circuits ua tiav kev sib cais thiab tsav ua haujlwm los ntawm cov nyhuv photoelectric. Lub optocoupler cais cov input thiab output terminals, kom ntseeg tau tias tsis muaj hluav taws xob ncaj qha kev sib txuas ntawm cov tswj Circuit Court thiab tswj Circuit Court. Thaum muaj qee qhov hluav taws xob raug siv rau cov tswv yim, lub photodiode hauv lub optocoupler emits lub teeb, tsav lub phototransistor ua, yog li energizing lub relay coil. Txoj kev tsav tsheb no muaj qhov zoo xws li kev sib cais zoo heev thiab muaj zog cuam tshuam tsis kam.
IV. Cov yam ntxwv ntawm Relay Control Circuits
Kev ntseeg siab: Relays siv cov neeg kho tshuab kev sib cuag rau kev tswj / tawm, muab kev ntseeg siab thiab ruaj khov.
Kev Nyab Xeeb Siab: Kev tswj xyuas hluav taws xob ua kom qis -voltage tswj ntawm high-voltage systems thiab low-tam sim no kev tswj ntawm siab- cov tshuab tam sim no, yog li txhim kho kev nyab xeeb ntawm Circuit Court.
High Flexibility: Los ntawm kev hloov kho cov kev teeb tsa ntawm kev tswj xyuas Circuit Court lossis xaiv ntau hom relays thiab tsav circuits, ntau yam kev tswj hwm tuaj yeem ua tiav.
Kev Kho Kom Yooj Yim: Cov qauv ntawm relay tswj circuits yog qhov yooj yim, ua rau lawv nkag siab thiab tswj tau yooj yim.
V. Summary
Kab lus no muab cov ncauj lus kom ntxaws tsom xam ntawm cov hauv paus ntsiab lus thiab cov qauv ntawm relay tswj circuits. Raws li ib qho tseem ceeb hauv kev tswj cov khoom siv hluav taws xob, relays ua lub luag haujlwm tseem ceeb hauv thaj chaw xws li kev lag luam automation thiab kev tswj fais fab. Los ntawm kev nkag siab txog cov qauv thiab cov qauv kev khiav hauj lwm ntawm relays, nrog rau cov yam ntxwv thiab daim ntawv thov scenarios ntawm ntau hom tsav circuits, peb muaj peev xwm zoo dua siv relay tswj circuits kom tau raws li ntau yam kev tswj automation. Nyob rau tib lub sijhawm, peb yuav tsum tau them sai sai rau kev xaiv thiab kev siv cov relays, nrog rau kev tsim nyog ntawm Circuit Court tsim, kom ntseeg tau tias kev ruaj ntseg thiab kev nyab xeeb ntawm Circuit Court.