https://www.jonyautoparts.com/abs-sensor/
Tam sim no, qhov ceev sensors siv nyob rau hauv ABS system feem ntau yog electromagnetic thiab Hall hom.
(1) electromagnetic tebceev sensorqauv
Lub taub hau sensing yog tsim los ntawm cov hlau nplaum ruaj khov 2, polar axis 5 thiab induction coil 4, thiab lwm yam. Cov qauv ntawm lub taub hau ntawm lub taub hau yog chisel hom thiab kem hom.Thaum lub nplhaib 6 rotates, lub crown thiab backlash alternately fim lub polar axis. Thaum lub sij hawm lub nplhaib. Kev sib hloov ntawm lub nplhaib iav, qhov sib nqus flux hauv induction coil hloov pauv los ua kom muaj qhov cuam tshuam hluav taws xob, uas yog cov tswv yim rau ECU ntawm ABS los ntawm cable 1 ntawm qhov kawg ntawm induction coil.
Thaum qhov ceev ntawm lub nplhaib iav hloov, qhov zaus ntawm qhov induced electromotive quab yuam hloov.The ABS ECU kuaj lub log ceev los ntawm kev kuaj xyuas qhov zaus ntawm induced electromotive force.Electromagnetic logceev sensormuaj cov qauv yooj yim thiab tus nqi qis, tab sis nws muaj qhov tsis zoo hauv qab no: ua ntej, qhov amplitude ntawm nws cov zis teeb liab hloov nrog kev hloov ntawm qhov ceev.Yog tias qhov ceev qeeb dhau, nws cov teeb liab tso zis tsawg dua 1V, ECU tsis tuaj yeem ntes tau; Thib ob, Cov lus teb zaus tsis siab.Thaum qhov ceev yog siab dhau, qhov zaus teb ntawm lub sensor tsis tuaj yeem khaws cia; Thib peb, lub peev xwm los tiv thaiv electromagnetic cuam tshuam tsis zoo.Tam sim no, kev tswj ceev ntau ntawm ABS system hauv tsev thiab txawv teb chaws. feem ntau yog 15-160km / h, thiab kev tswj ceev ntau yuav tsum tau nthuav dav mus rau 8-260km / h lossis loj dua yav tom ntej. Obviously, electromagnetic induction log ceev sensor yog qhov nyuaj rau hloov mus rau.
(2) Hall logceev sensor
Hall log ceev sensor kuj yog tsim los ntawm sensing lub taub hau thiab iav nplhaib.Lub taub hau sensing yog tsim los ntawm cov hlau nplaum tas mus li, Hall element thiab hluav taws xob circuit, thiab lwm yam. Cov kab hlau nplaum ntawm cov hlau nplaum tas mus li dhau los ntawm Hall element mus rau iav, raws li qhia. Hauv qab no.Thaum lub iav tig, qhov ntom ntawm cov kab hlau nplaum hla dhau los ntawm Hall lub caij hloov, yog li ua rau lub Hall voltage hloov. Lub Hall lub caij yuav tso tawm ib millivolt (mV) theem ntawm quasi sine yoj voltage.Qhov teeb liab no kuj yuav tsum tau hloov los ntawm ib tug hluav taws xob Circuit Court rau ib tug qauv mem tes voltage.Hall log ceev sensor muaj cov nram qab no zoo: ua ntej, lub voltage amplitude ntawm lub Cov teeb liab tso zis tsis cuam tshuam los ntawm qhov ceev.; Qhov thib ob yog lub siab zaus teb.Nws cov lus teb zaus yog siab li 20kHz, uas yog sib npaug rau lub teeb liab zaus kuaj pom thaum lub tsheb ceev yog 1000km / h. Third, nws muaj zog muaj peev xwm tiv thaiv electromagnetic cuam tshuam.Yog li ntawd, Hall sensor tsis yog tsuas yog siv dav hauv ABS log ceev nrhiav pom, tab sis kuj tau siv dav hauv nws cov kev tswj xyuas ceev kom paub meej.
