Abstract
Raws li lub hauv paus ntsiab lus, cov yam ntxwv thiab kev teeb tsa hom qhib hom Hall tam sim no sensor, daim ntawv thov ntawm hom qhib Hall tam sim no sensor hauv kev hloov pauv thiab kev faib tawm ntawm lub Hoobkas raug tshuaj xyuas, txhawm rau muab kev daws teeb meem rau cov neeg siv kom paub. lub ntse faib ntawm DC system sai sai.
Cov lus tseem ceeb: qhib hom Hall tam sim no sensor DC faib system ua haujlwm raws cai thov
Txheej txheem cej luam
DC tis system feem ntau yog tsim los ntawm kev hloov hluav taws xob ntau zaus thiab roj teeb, uas yog siv los muab cov khoom siv hluav taws xob DC txhim khu kev qha rau kev tswj, teeb liab, kev tiv thaiv relay thiab cov khoom siv tsis siv neeg, teeb pom kev zoo thiab lwm yam hauv DC system. Nws muaj cov kev xav tau siab rau kev ntseeg siab, ruaj khov thiab zoo ntawm cov khoom siv hluav taws xob. Yog li ntawd, nyob rau hauv Lavxias teb sab DC system, peb sib tw DC Hall faib meter siv. Thaum lub sij hawm hloov ntawm DC system, tsis muaj hluav taws xob hluav taws xob, thiab kev hloov pauv engineering yog qhov nyuaj, thiab cov tsoos kaw Hall tam sim no sensor lossis shunt tsis tuaj yeem daws qhov teeb meem. Yog li ntawd, qhib Hall tam sim no sensor tuaj yeem siv los daws qhov teeb meem DC tam sim no ntsuas hauv qhov kev hloov pauv, thiaj li ua kom muaj kev nyab xeeb ntawm kev hloov pauv tsis muaj hluav taws xob.
Khoom tsim
Cov yam ntxwv zoo
Qhib lub qhov ncauj Hall tam sim no sensor yog tsim los ntawm ib txwm kaw lub qhov ncauj Hall tam sim no sensor. Nws muaj cov qauv tshiab thiab zoo nkauj tsos. Tag nrho yog tsim los ntawm lub plhaub, hlau core, sampling Circuit Court board thiab tsau resin. Cov khoom siv plhaub yog ua los ntawm PC / ABS alloy, uas muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam, siab txhua yam muaj zog thiab kev tiv thaiv ib puag ncig. Cov tub ntxhais yog ua los ntawm kev taw qhia txias bonded silicon steel ntawv, uas muaj cov yam ntxwv ntawm kev ua haujlwm ruaj khov, siab txhua yam muaj zog thiab tsis tshua muaj siab sib nqus conductivity. Ntsuab pluggable davhlau ya nyob twg yog siv rau Circuit Court board thiab sab nraud thaiv, uas yog yooj yim thiab txhim khu kev qha rau ntawm qhov chaw thaiv. Cov qauv tshwj xeeb yog pom nyob rau hauv daim duab 1 thiab 2. Cov tsos ntawm cov khoom txais kev sib cais tsim. Daim duab 1 yog ib puag ncig hla, uas yog tsim rau kev hla dhau ntawm DC system thaum lub tsheb npav thawj zaug yog cable. , Fig. 2 square pass, haum rau DC system thaum lub tsheb npav thawj yog tooj liab bar. Raws li kev ntsuas ntau yam ntawm cov kev xav tau tam sim no thiab perforation, cov khoom siv sib xws tuaj yeem xaiv tau. Cov koob no ntawm cov sensors tuaj yeem ntsuas qhov tam sim no ntau ntawm 20A ~ 20000A, cov duab tseem ceeb ntawm phi 20, 40, 60, 64 * 16, 85 * 27, 104 * 36, 140 * 50 thiab lwm yam tshwj xeeb, raws li pom hauv daim duab 3 , haum rau kev siv sib txawv.
Fig. 1 ncig hla tus qauv Fig. 2 Square pass pattern
Daim duab 3 AHKC series qhib hom Hall tam sim no sensor
Txoj cai ua haujlwm
Hall tam sim no sensor raws li Hall nyhuv, electromagnetic induction txoj cai, tsim ntawm ib tug sensor, raws li txoj cai yuav muab faib mus rau hauv lub qhib voj hom (ncaj) thiab kaw voj hom (magnetic tshuav nyiaj li cas), qhib chav tam sim no sensor yog nyob rau hauv ib txwm. qhib lub voj (ncaj) yog txhim kho nyob rau hauv lub hauv paus ntawm lub tsev sensor, yog txawv los ntawm cov tsoos ib txwm core, ib tug nti tsim chav tsev, Yuav kom tsim ib tug split qauv, cov tub ntxhais hlau yog sib cais thiab ntsia symmetrically. Cov cuab yeej siv cov khoom sib txuas sib txuas sib txuas sib txawv ntawm ob chav Hall chips. Lub hauv paus ntsiab lus ntawm qhib-hom Hall sensor yog qhia hauv daim duab 4:
Daim duab 4 Schematic daim duab ntawm qhib Hall sensor
Thaum tus thawj sab tam sim no IP ntws los ntawm ib tug ntev hlau, yuav tsim ib tug magnetic teb nyob ib ncig ntawm lub hlau, qhov loj ntawm magnetic teb thiab yog proportional rau tam sim no los ntawm cov hlau, lub magnetic teb sib sau ua ke nyob rau hauv lub voj voog, los ntawm ob lub tsev nyob rau hauv. Kev ntsuas qhov sib txawv ntawm lub voj voog, ob lub ntsiab lus tseem ceeb hloov mus rau hauv tib lub teb, cov teeb liab tso zis nrog cov yam ntxwv ntawm cov zis hluav taws xob los ntawm qhov sib txawv amplifier tso zis, Tsis tsuas yog tuaj yeem cuam tshuam cov hom kev cuam tshuam, tab sis kuj muaj qhov cuam tshuam ntawm qhov kub thiab txias, qhov tso zis voltage VS raug cuam tshuam qhov qub sab tam sim no IP. Cov zis tawm dav dav yog ntsuas raws li DC ± 5V lossis DC4-20mA.
Khoom installation
Siv cov khoom square-qhov ua piv txwv, raws li qhia hauv daim duab 5, qhib lub mounting ntsia hlau ntawm lub qhib-hom Hall tam sim no sensor, thiab tshem tawm lub cev qis ntawm lub sensor; Lub cev sab sauv ntawm hom qhib Hall tam sim no sensor yog thauj mus rau hauv lub tsheb npav thawj zaug ntawm lub tshuab xa khoom, thiab lub cev qis ntawm lub sensor raug kaw. Lub mounting screws thiab gaskets ntawm lub sensor dhau los ntawm kev kho qhov ntawm lub cev sab sauv thiab qis, thiab lub cev sab sauv thiab qis ntawm lub sensor yog tsau ua ke. Yog hais tias nyob rau ntawm qhov chaw fais fab tuag yog ua tau, ob qhov sib txuas threaded qhov tuaj yeem qhib rau ntawm lub phaj tooj liab raws li qhov xav tau ntawm qhov ntsuas qhov sib txawv, thiab lub sensor raug tsau rau ntawm qhov threaded qhov ntawm lub tsheb npav los ntawm lub tsheb mounting kho qhov kom tiav. installation ntawm lub sensor; Yog tias qhov chaw yuav tsum tau txuas hluav taws xob txuas ntxiv mus, cov roj hmab txhawb nqa tuaj yeem muab tso rau ntawm lub plhaub thiab cov phaj tooj liab kom ntseeg tau tias lub sensor tuaj yeem ua haujlwm tau zoo nyob rau hauv kev co. Tag nrho cov txheej txheem installation yog qhov ceev thiab yooj yim.
Fig. 5 Cov khoom siv kos duab kos duab
Qhov zoo ntawm qhib hom Hall sensor
Piv nrog rau txoj kev ntsuas DC niaj hnub no feem ntau tau txais los ntawm shunt lossis transformer, qhib hom Hall sensor muaj qhov zoo hauv qab no:
1) Lub zog rwb thaiv tsev siab ntawm thawj sab thiab theem nrab, mus txog AC 12KV kev rho tawm;
2) Tsis muaj qhov poob;
3) Kev ua tau zoo dynamic: lub sij hawm teb yog tsawg dua 20uS thiab qhov ceev nrhiav Di / dt yog siab tshaj 20A / us.
4) Tsis tas yuav disassemble tus thawj sab cable lossis tsheb npav thaum lub sijhawm teeb tsa. Nws yog qhov tshwj xeeb tshaj yog tsim rau kev hloov pauv thiab kev tsim kho cov cuab yeej uas tsis tso cai rau poob lub zog.
Cov khoom siv
Qhib-kawg Hall tam sim no sensor yog tsuas yog siv nyob rau hauv lub transformation ntawm DC tis system nyob rau hauv factories, xws li DC fais fab system transformation nyob rau hauv fais fab nroj tsuag, DC system transformation nyob rau hauv substations, kev sib txuas lus chav tsev transformation, railway locomotive transformation thiab lwm yam dej num. Nws tuaj yeem hloov qhov nruab nrab ntug DC tam sim no lub teeb liab ntawm lub cev rau hauv tus qauv DC ± 5V lossis 4-20mA tso zis. Nws ua lub luag haujlwm ntawm kev saib xyuas thiab kev sib cais hluav taws xob, thiab tuaj yeem siv nrog ntau lub voj voog saib xyuas lossis lwm yam khoom siv hluav taws xob ntsuas.
Xaus
Qhib-kawg Hall tam sim no sensor ua lub luag haujlwm tseem ceeb hauv daim ntawv thov ntawm DC system vim nws cov qauv yooj yim, yooj yim installation, txhim khu kev qha lag luam thiab lwm yam kev siv tau zoo, tshwj xeeb tshaj yog nyob rau hauv qhov project renovation.