Ua ntej tshaj plaws, cia saib lawv cov lus txhais
Ob-xaim hluav taws xob: ob lub xov hlau thiab cov kev sib kis tau muab tso rau hauv cov lus qhia sab nraud, thiab cov hluav taws xob tau qhia los ntawm sab nraud, thiab cov thauj khoom hauv cov kab ntawv kom tsav tsheb.
Peb-xaim hluav taws xob: peb-hlau sensor yog qhov kawg ntawm lub zog hluav taws xob thiab cov zis tau sib cais los ntawm qhov zoo, tab sis lawv muab lub davhlau ya nyob twg.
Plaub-xaim hluav taws xob: ob xaim rau lub zog thiab ob lub xov hlau rau lub teeb liab. Lub zog thiab teeb liab ua haujlwm nyias.
Kev tsim qauv ntawm ob peb-cov hlau siv cov hlau hlau tuaj rau hauv hav zoov tom qab yug ob-hlau. Qhov no yog qhov tshwm sim ntawm kev siv hluav taws xob hauv hluav taws xob hauv qhov ntsuas, qhov tseem ceeb ntawm kev hloov pauv hloov dua siab tshiab, uas tsis tuaj yeem sib cais los ntawm lub zog hluav taws xob. Yog li ntawd, thawj zaug tshwm yog plaub-hlau transmitter; Ntawd yog, ob lub xov hlau yog lub luag haujlwm rau kev muab lub zog, thiab lwm ob lub xov hlau yog lub luag haujlwm hloov dua siab tshiab (xws li voltage, tam sim no, thiab lwm yam. Tam sim no, txawm li cas los xij, ntau transmitters siv ob-xaim. Hauv qab no, cia peb saib ntawm dab tsi yog qhov sib txawv ntawm cov hlau sib txawv ntawm cov hlau hluav taws xob?
Qhov sib txawv ntawm cov hlau sib txawv ntawm cov hlau system transmitters
I. Ob-Hlau System
Txhawm rau kom paub txog ib qho khoom siv ntawm ob-hlau, cov xwm txheej hauv qab no yuav tsum tau ntsib ib txhij:
1. V Tsawg dua lossis sib npaug rau Emin-ImaxRlmax
Qhov hluav taws xob v ntawm cov zis ntawm cov khoom siv hluav taws xob sib npaug nrog cov khoom siv tsawg ntawm cov khoom siv hluav taws xob tsis kam thiab kis tus mob ua tsis tau.
2. Kuv tsawg dua lossis sib npaug nrog imin
Cov kev ua haujlwm ib txwm tam sim no kuv ntawm lub transmitter yuav tsum yog tsawg dua lossis sib npaug ntawm cov khoom tawm tam sim no ntawm lub transmitter.
3. P Lub zog siv me me p ntawm cov transmitter yuav tsum tsis pub tshaj qhov sib npaug saum toj no, feem ntau<90mW. Qhov twg: emin=qhov ntsuas qis voltage, rau cov seev suab nrov} ({1}} ({}. 8/} ; Imax =20 ma; Imin =4 ma; Rlmax =250} ω * • • + Tus mob coj tsis taus. Yog tias lub siab transmitter yog tsim los kom tau raws li peb cov xwm txheej saum toj no, ob-xaim kis tau pom. Lub npe hu ua ob-xaim hluav taws xob uas lub zog hluav taws xob, thauj khoom hauv chav ua ke ntawm cov paib sib cuag thiab cov xaim hluav taws xob nrog tsuas yog ob lub xov hlau tsuas yog ob lub zog kab thiab cov paib. Ob-lub transmitter yog qhov tshwm sim ntawm lub teeb liab pib tam sim no ntawm 4ma DC, tsis txhob sib koom ua haujlwm ntawm cov tshuab xoom, qhov no "nyob xoom" yog kus rau cov cim ntawm cov hluav taws xob thiab kev txiav tsis sib txuas thiab lwm yam kev ua yuam kev. Ntxiv mus, ob-xaim hluav taws xob kuj tau txhawb kev siv cov kev nyab xeeb kev nyab xeeb, uas yog pab kom nyab xeeb thiab tawg-pov thawj. Ii. Peb-Hlau System Daim duab xaim ntawm peb-lub cav hlau tau qhia hauv Daim Duab 2. Tam sim no cov tso zis siv hluav taws xob muaj zog ntxiv rau ob txoj kab kis tau tam sim no. Peb-xaim hluav taws xob yog qhov kawg ntawm lub zog hluav taws xob nrog txoj kab, qhov kawg ntawm cov teeb meem hluav taws xob, qhov kawg ntawm lub teeb liab qhia ib txoj kab. Feem ntau ntawm nws cov khoom siv hluav taws xob rau DC 24V, cov zis kos duab DC {}} ma, dc {} ma, thauj tsis kam ntawm 0-1. 5Kω; Qee tus muaj MA thiab MV cim, tab sis lub nra tsis kam lossis tawm tswv yim tiv thaiv, vim muaj cov qauv sib txawv ntawm cov zis thiab cov txiaj ntsig sib txawv. Vim yog cov muaj koob npe thiab daim ntawv thov ntawm DC {0}} ma, dc {{} v signing system, nws yuav tsum tau hais tias lub signaling system yog koom ua ke, thiab rau qhov no vim li cas, nws yog qhov yuav tsum tau uas tsis muaj hluav taws xob ua ke ntawm cov cuab yeej, xws li on-line kev tsom xam, thiab lwm yam, tuaj yeem siv nrog cov zis ntawm DC {4-20 ma signing system, tab sis vim kev hloov pauv ntawm txoj kev hloov pauv rov qab, nws yog qhov nyuaj kom tau raws li peb cov xwm txheej saum toj no thiab tsis tuaj yeem ua tiav ob-xaim system. Txawm li cas los xij, vim kev nyuaj siab ntawm kev hloov dua tshiab ntawm Circuit Court, kev siv hluav taws xob thiab lwm yam, koj tuaj yeem siv ob qho kev sib tw sab nraud, koj tsuas tuaj yeem siv cov txheej txheem hluav taws xob sab nraud rau cov zis Rau plaub-xaim dc 4-20 ma transmitter. Feem ntau ntawm plaub-hlau transmitters tau siv los ntawm AC 220V, thiab qee qhov muaj hwj chim los ntawm DC24V. Tso zis paib yog DC {12}} ma, load tsis kam ntawm 250ω, lossis DC {14}}. 5Kω; Muaj Ma thiab MV cim, tab sis lub load tsis kam lossis tawm tswv yim tsis kam, vim muaj cov qauv ntawm cov zis tawm thiab cov nqi sib txawv. Cov tswv yim rau kev txais lub cim yog lub teeb liab tam sim no, xws li RES RES PARALLEL ACCESS, nws yog qhov tau txais cov teeb liab hluav taws xob. Vim muaj cov ntsiab cai ua haujlwm sib txawv thiab cov khoom sib txawv, cov khoom sib txawv tau tshwm sim, uas tseem yog tus thib ob xaim, plaub-xaim hlau daim ntawv ntawm lub transmitter. III, PLAUB-HLAU SYSTEM
Plaub-hlau transmitter raws li muaj nyob hauv daim duab 3, feem ntau ntawm nws cov khoom siv fais fab rau 220V ac, tseem muaj cov fais fab muab rau 24V DC. Tso zis teeb liab {{4 4}} ma ma ma ma dc, thau} ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma ma dc, thauj kev tiv thaiv ntawm {}}. 5Kω; Ib txhia tseem muaj MA thiab MV cim, tab sis lub nra tsis kam lossis tawm tswv yim tsis kam, vim cov ntawv tawm tsam sib txawv thiab cov txiaj ntsig sib txawv.
Hauv qhov saum toj no peb daim duab, cov tswv yim rau kev txais cov twj tau txais yog lub teeb liab tam sim no, xws li kev sib tw ua kom tau txais kev nkag mus rau Reseoror RL, nws yog lub ntsuas hluav taws xob tsis kam.
Raws li tuaj yeem pom los ntawm cov lus piav qhia saum toj no, vim yog tus ua haujlwm ntawm cov khoom sib txawv, uas yog txiav txim siab ntawm cov khoom sib txawv, uas kuj tau txiav txim siab ntawm ob-xaim, peb-hlau xaim hluav taws xob daim ntawv. Rau tus neeg siv, kev xaiv yuav tsum yog ua raws li qhov teeb meem tiag tiag ntawm cov teeb liab, tawg-cov kev xav tau, kev nqis peev thiab lwm yam teeb meem los xav txog kev xaiv.
Nws yuav tsum tau taw qhia tias peb-xaim thiab plaub-kav cov qauv tso tawm, vim nws cov qauv tsim tawm hluav taws xob tsis zoo li qub, yog li hauv daim ntawv thov ntawm cov Qhov tsis zoo ntawm nws cov zis tuaj yeem txuas nrog txoj kab tsis zoo ntawm 24V fais fab mov? Nws puas yog ib qho hauv av? Qhov no yog kom them sai sai rau, yog tias tsim nyog, kev siv rho tawm, xws li kev siv hluav taws xob, nyob rau hauv cov twj uas muaj kev nyab xeeb, ib yam li ib txwm muaj kev cuam tshuam rau kev cuam tshuam ntxiv.