Optocouplers, uas txuas cov cim hluav taws xob siv cov cim kho qhov muag, yog ib qho kev ua kom zoo nkauj thiab kev lag luam thiab kev ntseeg tau, xws li lub zog thiab rwb thaiv tsev.
Tab sis thaum twg thiab nyob rau qhov xwm txheej dab tsi yog tus tsim tawm, thiab dab tsi yog lub hauv paus ntsiab lus qab nws? Los yog thaum koj ua tau siv lub photocoupler hauv koj tus kheej cov khoom siv hluav taws xob ua haujlwm, koj yuav tsis paub yuav xaiv thiab siv nws li cas. Vim tias Optocouder feem ntau tsis meej pem nrog "phototransistor" thiab "photodiode". Yog li ntawd, dab tsi yog Photocooupler yuav qhia nyob rau hauv tsab xov xwm.
Dab tsi yog Photocoupler?
Tus Optocouder yog hluav taws xob sib xyaw ua ke uas nws cov etymology yog kho qhov muag
Coupler, uas txhais tau tias "Coupling nrog lub teeb." Qee zaum tseem hu ua optocoupler, kho qhov muag kho qhov muag, thiab txuas cov tswv yim pom kev, thiab cov khoom tso zis tawm ntawm cov teeb liab kho qhov muag. Tsis muaj qhov hluav taws xob sib txuas ntawm cov circuits no, ua lwm yam lus, hauv kev rwb thaiv tsev hauv lub xeev. Yog li ntawd, kev sib txuas nrog Circuit Court ntawm cov tswv yim thiab cov zis tau cais thiab tsuas yog lub teeb liab kis tau. Cov kev sib txuas sib txuas nrog cov lus qhia sib txawv nrog cov lus qhia sib txawv thiab cov zis voltage ntau ntau ntau ntau ntau ntau ntau cov kev xav ntawm cov tswv yim thiab tso zis.
Ib qho ntxiv, los ntawm kev xa lossis thaiv cov teeb liab lub teeb, nws ua raws li hloov chaw. Cov ncauj lus kom ntxaws thiab kev siv tshuab yuav tau piav qhia tom qab, tab sis lub teeb emitting ntawm lub photocoupler yog ib LED (teeb emitting Diode).
Txij xyoo 1960s rau xyoo 1970, thaum cov leds tau tsim thiab lawv txoj kev xav tau thev naus laus zis tseem ceeb,Optoelectronicslos ua ib tug neeg tawg. Lub sijhawm ntawd, ntau yamCov khoom siv kho muag khoomtau tsim, thiab cov duab sib tw photherfric yog ib qho ntawm lawv. Tom qab, Optoelectronics sai sai tau nkag rau hauv peb lub neej.
① ① ①ີ / mechanism
Lub hauv paus ntsiab lus ntawm Optocoudler yog tias lub teeb-emitting hloov lub teeb hluav taws xob rau hauv lub teeb, thiab lub teeb ci ntsa iab transmits lub teeb hluav taws xob teeb hluav taws xob. Lub teeb emitting thiab lub teeb tau txais keeb nyob sab hauv ntawm qhov thaiv ntawm lub teeb sab nraud, thiab ob qho sib txawv hauv kev txiav txim kom xa khoom.
Lub semiconductor siv nyob rau hauv lub teeb-emitting cov ntsiab yog lub LED (lub teeb-emitting diode). Ntawm qhov tod tes, muaj ntau yam semiconductors siv nyob rau hauv lub teeb-tau siv nyob rau hauv lub teeb-, nyob ntawm siv ib puag ncig, tus nqi sab nraud, feem ntau siv yog lub phototransistor.
Thaum tsis ua haujlwm, phototransistors nqa me ntsis ntawm tam sim no cov semiconductors ua dab tsi. Thaum lub teeb qhov teeb meem muaj, tus phototransistor tsim lub yees duab duab ntawm lub ntsej muag, lub qhov ntawm lub nroog semiconductor, dawb hauv hluav taws xob semiconductor nyob rau hauv p cheeb tsam ntws mus rau hauv lub n cheeb tsam, thiab qhov tam sim no yuav ntws tawm.
Phototransistors tsis yog ua raws li photodes, tab sis lawv kuj muaj cov nyhuv ntawm kev tawm ntawm ntau pua mus rau ib pua chaws (vim yog daim teb hluav taws xob sab hauv). Yog li ntawd, lawv muaj kev nkag siab txaus kom nqa txawm tias cov cim tsis muaj zog, uas yog qhov zoo.
Qhov tseeb, "Lub Teeb Blocker" peb pom yog cov khoom siv hluav taws xob nrog tib lub ntsiab cai thiab kev siv tshuab.
Txawm li cas los xij, lub teeb cuam tshuam feem ntau yog siv raws li sensors thiab ua lawv lub luag haujlwm los ntawm kev hla lub teeb pom kev zoo ntawm lub teeb pom kev zoo thiab lub teeb-tau txais keeb kwm. Piv txwv li, nws tuaj yeem siv los tshawb xyuas cov nyiaj npib thiab ntawv nyiaj hauv chaw muag khoom thiab ATMs.
Cov Nta
Txij li thaum lub teeb tsa cov khoom xa tuaj ntawm lub teeb, cov rwb thaiv tsev ntawm cov ncauj lus thiab sab tsim tawm yog qhov tseem ceeb. Cov rwb thaiv tsev siab tsis yooj yim cuam tshuam los ntawm lub suab nrov, tab sis kuj tseem tiv thaiv kev huam yuaj tam sim no ntws ntawm cov kab ke nyob ib sab, uas yog qhov muaj txiaj ntsig zoo tshaj plaws ntawm kev nyab xeeb. Thiab cov qauv uas nws tus kheej kuj yooj yim thiab tsim nyog.
Vim nws li keeb kwm ntev, cov khoom nplua nuj lineup ntawm ntau cov tuam ntxhab tseem yog qhov tshwj xeeb ntawm cov khoom siv Opocoudlers. Vim tias tsis muaj kev sib chwv lub cev, kev hnav ntawm feem ntawm feem me me, thiab lub neej ntev dua. Ntawm qhov tod tes, tseem muaj cov yam ntxwv uas muaj qhov ua kom yooj yim hloov kho, vim tias LED yuav hloov kho nrog lub sijhawm dhau mus thiab ntsuas kub.
Tshwj xeeb tshaj yog thaum sab hauv cov txheej txheem ntawm pob tshab yas rau lub sijhawm ntev, ua lub plawg, nws tsis tuaj yeem yog lub teeb zoo heev. Txawm li cas los xij, nyob rau hauv txhua rooj plaub, lub neej ntev dhau lawm piv rau kev tiv tauj kev sib cuag ntawm kev sib cuag.
Phototransistors feem ntau qeeb dua photodes, yog li lawv tsis siv rau kev sib txuas lus nrawm. Txawm li cas los xij, qhov no tsis yog qhov tsis zoo, raws li qee cov khoom siv muaj cov khoom siv hluav taws xob hauv cov khoom tawm los nce nrawm. Qhov tseeb, tsis yog txhua qhov hluav taws xob hluav taws xob yuav tsum nce nrawm.
Kev Siv
Yees Duab Couplersfeem ntau yog siv rau kev hloov haujlwm ua haujlwm. Lub Circuit Court yuav energized los ntawm tig ntawm kev hloov, tab sis los ntawm qhov pom ntawm cov yam ntxwv saum toj no, lub neej ntev, nws yog zoo haum rau kev ntseeg siab. Piv txwv li, suab nrov yog tus yeeb ncuab ntawm cov khoom siv hluav taws xob thiab cov cuab yeej siv audio / cov khoom siv sib txuas lus.
Nws kuj yog siv rau hauv lub cev muaj zog tsav lub tshuab. Qhov laj thawj rau lub cev muaj zog yog qhov nrawm yog tswj hwm los ntawm inverter thaum nws tau tsav, tab sis nws tsim suab nrov vim yog cov zis siab. Lub suab nrov no yuav tsis tsuas yog ua rau lub cev muaj zog nws tus kheej swb, tab sis kuj ntws los ntawm "av" cuam tshuam rau peripherals. Tshwj xeeb, khoom siv nrog cov kav hlau ntev yog ib qho yooj yim mus khaws cov zis loj no lub suab nrov, yog li nws yuav ua rau poob zoo thiab qee zaum ua rau muaj kev sib raug zoo. Los ntawm kev siv cov insulated muaj insulated Opocouplers rau kev hloov pauv, qhov cuam tshuam rau lwm cov voj voog thiab cov khoom siv tuaj yeem txo qis.
Thib ob, Yuav ua li cas xaiv thiab siv Optocouplers
Yuav ua li cas siv txoj cai optocouder rau kev thov hauv cov khoom tsim? Cov kws txhim kho microcontroll hauv qab no microcontroll hauv qab no yuav piav qhia yuav ua li cas xaiv thiab siv Optocouplers.
① ib txwm qhib thiab ib txwm kaw
Muaj ob hom photocouplers: ib hom uas hloov tau muab tua (tawm) thaum twg tus hloov pauv tau thov, thiab ib hom uas hloov pauv yog muab thaum tsis muaj voltage. Thov thiab tua thaum voltage yog thov.
Tus qub yog hu ua ib txwm qhib, thiab tom kawg yog hu ua ib txwm kaw. Yuav ua li cas xaiv, ua ntej nyob ntawm dab tsi ntawm Circuit Court koj xav tau.
② Txheeb xyuas cov zis tam sim no thiab siv voltage
Photocouplers muaj cov cuab yeej ntawm lub teeb liab lub teeb liab, tab sis tsis tas ib txwm hla dhau voltage thiab tam sim no ntawm yuav. Ntawm chav kawm, nws tau nyob, tab sis ib voltage yuav tsum tau thov los ntawm cov ncauj lus nkag mus raws li cov zis xav tau tam sim no.
Yog tias peb saib cov ntaub ntawv cov ntaub ntawv, peb tuaj yeem pom daim duab nyob qhov twg txoj kab rov qab (colutor tam sim no (cov lus qhia tawm) thiab cov lus qhia voltage (collector-emitter voltage). Tus sau tau hloov pauv raws li kev siv teeb LED, yog li thov cov voltage raws li cov zis xav tau tam sim no.
Txawm li cas los xij, koj yuav xav tias cov zis tam sim no tau muab xam ntawm no tsis ceeb. Nov yog tus nqi tam sim no uas tseem tuaj yeem tso tawm cov zis tom qab tau ua tiav qhov tsis zoo rau lub sijhawm, yog li nws yog tsawg dua qhov ntsuas ntau tshaj plaws.
Ntawm qhov tsis sib xws, muaj cov xwm txheej uas cov zis tam sim no tsis loj. Yog li ntawd, thaum xaiv cov Optocoubler, nco ntsoov xyuas cov "tawm tam sim no" thiab xaiv cov khoom uas phim nws.
③ Qhov Siab Tshaj Plaws
Qhov siab kawg siab tshaj plaws tam sim no yog qhov tseem ceeb tshaj plaws tam sim no tus nqi uas lub xaiv cia tuaj yeem tiv taus thaum coj. Ib zaug ntxiv, peb yuav tsum ua kom peb paub tias peb xav tau cov tswv yim tshaj tawm li cas thiab qhov kev tawm tswv yim voltage yog ua ntej peb yuav. Nco ntsoov tias tus nqi siab tshaj plaws thiab cov siv tam sim no tsis txwv, tab sis muaj qee cov npoo.
④ Teeb lub photocoupler kom raug
Muaj xaiv txoj cai Optocouder, peb siv nws ua txoj haujlwm tiag tiag. Lub installation nws tus kheej yog yooj yim, tsuas yog txuas cov terminals txuas nrog txhua lub tswv yim sab Circuit Court thiab Eutput SAB Circuit Court. Txawm li cas los xij, kev saib xyuas yuav tsum tau ua kom tsis txhob dag lub tswv yim sab thiab sab tsim tawm. Yog li, koj yuav tsum tseem xyuas cov cim hauv cov ntaub ntawv cov ntaub ntawv, kom koj tsis pom tias cov duab sib tw txuas ntxiv tom qab kos duab PCB.
Lub Sijhawm Post: Jul-29-2023