Lub tsheb niaj hnub yog ib qho kev tsim hluav taws xob uas muaj ntau yam khoom siv hluav taws xob rau ntau lub hom phiaj.Kev tswj cov khoom siv no yog ua raws li cov khoom siv yooj yim - electromagnetic relays.Nyeem tag nrho txog cov relays, lawv hom, tsim thiab kev ua haujlwm, nrog rau lawv txoj kev xaiv thiab hloov, hauv kab lus.
Dab tsi yog electromagnetic relay?
Automotive electromagnetic relay yog ib feem ntawm lub tsheb hluav taws xob system;Ib qho khoom siv hluav taws xob tswj hluav taws xob uas muab kaw thiab qhib hluav taws xob hluav taws xob thaum lub teeb liab tswj tau siv los ntawm kev tswj ntawm lub dashboard lossis los ntawm cov sensors.
Txhua lub tsheb niaj hnub no tau nruab nrog lub tshuab hluav taws xob tsim, uas suav nrog ntau ntau, lossis ntau pua lub circuits nrog ntau yam khoom siv - teeb, hluav taws xob motors, sensors, electronics Cheebtsam, thiab lwm yam. Feem ntau cov circuits yog manually tswj los ntawm tus neeg tsav tsheb, tab sis kev hloov ntawm cov no. circuits tsis yog nqa tawm ncaj qha los ntawm dashboard, tab sis remotely siv cov khoom pab - electromagnetic relays.
Electromagnetic relays ua ntau yam haujlwm:
● Muab cov chaw taws teeb tswj ntawm lub zog hluav taws xob, ua rau nws tsis tsim nyog rub cov xov hlau loj ncaj qha mus rau lub dashboard ntawm lub tsheb;
● Sib cais cov hluav taws xob hluav taws xob thiab hluav taws xob tswj hluav taws xob, txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm lub tsheb hluav taws xob;
● Txo qhov ntev ntawm cov xov hlau ntawm lub zog hluav taws xob;
● Ua kom yooj yim rau kev siv lub hauv paus tswj hwm rau cov khoom siv hluav taws xob ntawm lub tsheb - cov relays tau sib sau ua ke hauv ib lossis ntau qhov blocks uas muaj ntau qhov hluav taws xob sib txuas;
● Qee hom relays txo cov theem hluav taws xob cuam tshuam uas tshwm sim thaum hloov hluav taws xob circuits.
Relays yog qhov tseem ceeb ntawm lub tsheb hluav taws xob, kev ua haujlwm tsis raug ntawm cov khoom no lossis lawv qhov tsis ua haujlwm ua rau poob ntawm cov khoom siv hluav taws xob ib leeg lossis tag nrho cov khoom siv hluav taws xob, suav nrog cov tseem ceeb rau kev ua haujlwm ntawm lub tsheb.Yog li ntawd, faulty relays yuav tsum tau hloov nrog cov tshiab sai li sai tau, tab sis ua ntej mus rau lub khw rau cov khoom no, koj yuav tsum to taub lawv hom, tsim thiab yam ntxwv.
Automotive relay
Hom, tsim thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm electromagnetic relays
Tag nrho cov tsheb relays, tsis hais hom thiab siv tau, muaj qhov tseem ceeb tib yam tsim.Lub relay muaj peb qhov tseem ceeb: electromagnet, txav armature thiab ib pab pawg neeg sib cuag.Lub electromagnet yog ib tug winding ntawm enameled tooj liab hlau ntawm me me cross-section, mounted rau ib tug hlau core (magnetic core).Lub armature txav tau feem ntau yog ua nyob rau hauv daim ntawv ntawm lub phaj tiaj tus los yog ib qho L-shaped, hinged saum toj kawg ntawm cov electromagnet.Lub thauj tog rau nkoj so ntawm ib pab pawg neeg sib cuag ua nyob rau hauv daim ntawv ntawm elastic daim hlau nrog riveted bronze los yog lwm yam kev sib cuag cov ntsiab lus.Qhov no tag nrho cov qauv yog nyob rau hauv lub hauv paus, nyob rau hauv qis ib feem ntawm cov txheej txheem riam sib cuag, kaw nrog ib tug yas los yog hlau casing.
tsimLub hauv paus ntsiab lus ua haujlwm ntawm 4 thiab 5 tus pin relays
Txoj kev sib txuas thiab lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm relay yog raws li cov hauv paus ntsiab lus yooj yim.Lub relay tau muab faib ua ob lub voj voog - tswj thiab lub zog.Cov kev tswj xyuas hluav taws xob muaj xws li electromagnet winding, nws txuas nrog lub zog hluav taws xob (roj teeb, lub tshuab hluav taws xob) thiab rau lub cev tswj nyob rau ntawm lub dashboard (khawm, hloov), lossis mus rau lub sensor nrog pab pawg neeg sib cuag.Lub zog hluav taws xob muaj xws li ib lossis ntau dua relay hu, lawv txuas nrog lub hwj huam mov thiab cov khoom tswj / Circuit Court.Lub relay ua haujlwm raws li hauv qab no.Thaum tswj tau raug kaw, lub electromagnet winding Circuit Court qhib thiab tam sim no tsis ntws hauv nws, lub electromagnet armature yog nias tawm ntawm cov tub ntxhais los ntawm lub caij nplooj ntoos hlav, lub relay hu qhib.Thaum koj nias lub pob los yog hloov, ib qho tam sim no ntws los ntawm winding ntawm lub electromagnet, ib qho chaw sib nqus tshwm sim nyob ib ncig ntawm nws, uas ua rau lub armature tau attracted rau lub hauv paus.Lub armature rests ntawm cov neeg sib cuag thiab hloov lawv, kom ntseeg tau tias kaw lub circuits (los yog, conversely, qhib nyob rau hauv cov ntaub ntawv ntawm ib txwm kaw kev sib cuag) - lub ntaus ntawv los yog Circuit Court yog txuas nrog lub hwj chim qhov chaw thiab pib ua nws lub zog.Thaum lub electromagnet winding yog de-energized, lub armature rov qab mus rau nws thawj txoj hauj lwm nyob rau hauv qhov kev txiav txim ntawm lub caij nplooj ntoos hlav, tig tawm lub ntaus ntawv / Circuit Court.
Electromagnetic relays tau muab faib ua ob peb hom raws li tus naj npawb ntawm cov neeg sib cuag, hom kev sib cuag hloov, txoj kev teeb tsa thiab cov yam ntxwv hluav taws xob.
Raws li tus naj npawb ntawm kev sib cuag, tag nrho cov relays muab faib ua ob hom:
● Plaub-pin;
● Tsib-pin.
Nyob rau hauv lub relay ntawm thawj hom muaj tsuas yog 4 riam hu, nyob rau hauv lub relay ntawm lub thib ob hom muaj twb 5 hu.Nyob rau hauv tag nrho cov relays, cov kev sib cuag yog teem nyob rau hauv ib tug tej yam kev txiav txim, uas tshem tawm qhov tsis raug installation ntawm no ntaus ntawv nyob rau hauv lub mating block.Qhov sib txawv ntawm 4-pin thiab 5-pin relays yog txoj hauv kev hloov pauv.
Ib tug 4-pin relay yog cov cuab yeej yooj yim tshaj plaws uas muab kev hloov pauv ntawm ib lub voj voog nkaus xwb.Kev sib cuag muaj lub hom phiaj hauv qab no:
● Ob qhov kev sib cuag ntawm cov tswj Circuit Court - nrog rau lawv cov kev pab, lub winding ntawm electromagnet txuas;
● Ob qhov kev sib cuag ntawm lub tshuab hluav taws xob hloov hluav taws xob - lawv siv los txuas cov khoom siv hluav taws xob los yog cov khoom siv hluav taws xob.Cov kev sib cuag no tsuas yog nyob rau hauv ob lub xeev - "On" (tam sim no ntws los ntawm Circuit Court) thiab "Tawm" (tam sim no tsis ntws los ntawm lub Circuit Court).
Ib tug 5-pin relay yog ib qho cuab yeej siv ntau dua uas tuaj yeem hloov ob lub voj voog ib zaug.Muaj ob hom ntawm hom relay no:
● Nrog kev hloov ntawm tsuas yog ib qho ntawm ob lub voj voog;
● Nrog kev sib txuas ntawm ob lub voj voog.
Hauv cov khoom siv ntawm thawj hom, kev sib cuag muaj lub hom phiaj hauv qab no:
● Ob qhov kev sib cuag ntawm cov tswj Circuit Court - zoo li hauv cov ntaub ntawv dhau los, lawv txuas nrog lub winding ntawm electromagnet;
● Peb qhov kev sib cuag ntawm lub voj voog hloov.Ntawm no, ib tus pin yog sib koom, thiab ob qho tib si txuas nrog cov tswj hluav taws xob.Nyob rau hauv xws li ib tug relay, cov kev sib cuag nyob rau hauv ob lub xeev - ib tug yog ib txwm kaw (NC), qhov thib ob yog ib txwm qhib (HP).Thaum lub sijhawm ua haujlwm ntawm lub relay, hloov ntawm ob lub voj voog yog nqa tawm.
Plaub-pin automotive relay
Hauv cov khoom siv ntawm hom thib ob, tag nrho cov kev sib cuag yog nyob rau hauv HP lub xeev, yog li thaum lub relay tshwm sim, ob qho tib si switched circuits yog tam sim ntawd tig los yog tua.
Relays tej zaum yuav muaj ib qho ntxiv - qhov cuam tshuam-suppressing (quenching) resistor los yog ib lub semiconductor diode ntsia thaum uas tig mus rau winding ntawm lub electromagnet.Qhov no resistor / diode txwv tus kheej-induction tam sim no ntawm electromagnet winding thaum thov thiab tshem tawm qhov hluav taws xob los ntawm nws, uas txo cov theem ntawm electromagnetic cuam tshuam los ntawm nws.Xws li relays yog txwv tsis pub siv rau kev hloov qee lub voj voog ntawm lub tsheb hluav taws xob hluav taws xob, tab sis feem ntau lawv tuaj yeem hloov nrog cov pa relays yam tsis muaj qhov tsis zoo.
Txhua hom relays tuaj yeem txuas rau hauv ob txoj kev:
● Tsuas yog kev teeb tsa hauv lub txee thaiv - lub cuab yeej tuav los ntawm kev sib txhuam ntawm cov neeg sib cuag hauv lub qhov (socket) ntawm lub ncoo;
● Kev teeb tsa hauv lub txee thaiv nrog fixation nrog lub bracket - yas lossis hlau bracket rau cov ntsia hlau yog tsim rau ntawm lub tsev relay.
Cov cuab yeej ntawm thawj hom yog ntsia rau hauv relay thiab fuse thawv, lawv muaj kev tiv thaiv los ntawm ntog tawm los ntawm lub hau los yog tshwj xeeb clamps.Cov cuab yeej ntawm hom thib ob yog tsim los rau kev teeb tsa hauv lub cav ntim lossis hauv lwm qhov chaw ntawm lub tsheb sab nraum lub tsev, kev ntseeg siab ntawm kev teeb tsa yog muab los ntawm lub bracket.
Electromagnetic relays muaj rau cov khoom siv hluav taws xob ntawm 12 thiab 24 V, lawv cov yam ntxwv tseem ceeb yog:
● Actuation voltage (feem ntau yog ob peb volts hauv qab cov khoom siv hluav taws xob);
● Tso tawm qhov hluav taws xob (feem ntau yog 3 lossis ntau dua volts tsawg dua qhov hluav taws xob actuation);
● Qhov siab tshaj plaws tam sim no nyob rau hauv lub switched Circuit Court (tuaj yeem nyob ntawm chav nyob mus rau kaum tawm amperes);
● Tam sim no nyob rau hauv kev tswj Circuit Court;
● Lub zog ua haujlwm ntawm electromagnet winding (feem ntau tsis tshaj 100 ohms).
Relay thiab fuse box
Qee yam ntxwv (siv voltage, qee zaus tam sim no) raug siv rau lub tsev relay, lossis yog ib feem ntawm nws cov cim.Tsis tas li ntawd nyob rau hauv cov ntaub ntawv muaj ib tug schematic daim duab ntawm lub relay thiab lub hom phiaj ntawm nws cov terminals (nyob rau hauv ntau rooj plaub, cov xov tooj ntawm cov pins sib raug rau cov xov tooj raws li schematic daim duab ntawm cov hluav taws xob system ntawm lub tsheb tshwj xeeb kuj qhia).Qhov no ua kom yooj yim rau kev xaiv thiab hloov cov electromagnetic relays hauv lub tsheb.
Yuav ua li cas xaiv thiab hloov lub electromagnetic relay
Automotive relays raug rau cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tseem ceeb, yog li lawv tsis ua haujlwm ib ntus.Kev tawg ntawm lub relay yog tshwm sim los ntawm qhov tsis ua hauj lwm ntawm ib qho khoom siv lossis circuits ntawm lub tsheb hluav taws xob.Txhawm rau tshem tawm qhov tsis ua haujlwm, lub relay yuav tsum tau muab tshem tawm thiab kuaj xyuas (tsawg kawg nrog lub ohmmeter lossis sojntsuam), thiab yog tias pom tias muaj kev puas tsuaj, hloov nws nrog ib qho tshiab.
Tus tshiab relay yuav tsum yog tib hom thiab qauv raws li yav tas los siv.Cov cuab yeej yuav tsum tsim nyog raws li cov yam ntxwv ntawm hluav taws xob (lub hwj chim mov, actuation thiab tso tawm voltage, tam sim no nyob rau hauv lub switched Circuit Court) thiab tus naj npawb ntawm cov neeg.Yog hais tias muaj ib tug resistor los yog diode nyob rau hauv lub qub relay, nws yog ntshaw tias lawv muaj nyob rau hauv lub tshiab.Relay hloov yog ua los ntawm tsuas yog tshem tawm qhov qub thiab txhim kho ib qho tshiab hauv nws qhov chaw;Yog hais tias muaj ib tug bracket, ces ib tug ntsia hlau / ntsia liaj qhov rooj yuav tsum tau unscrewed thiab ceev ceev.Nrog rau txoj kev xaiv thiab hloov cov relay, cov khoom siv hluav taws xob ntawm lub tsheb yuav pib ua haujlwm tam sim ntawd
Post lub sij hawm: Lub Xya hli ntuj-14-2023