Ib tsab xov xwm hais txog Hall sensor: nws yog dab tsi, hom dab tsi ntawm cov sensors muaj nyob. Yuav tshuaj xyuas Hall sensor li cas rau kev ua tau zoo. Nws siv qhov twg thiab rau dab tsi. Nws ua haujlwm li cas
Hall Sensor yog dab tsi?
Hall Sensor
- lub tshuab hluav taws xob magnetoelectric, uas tau txais nws lub npe los ntawm lub npe ntawm tus kws kho mob lub tsev, uas tau tshawb pom lub hauv paus ntsiab lus ntawm lub hauv paus ntawm qhov ntsuas no tau tsim tom qab. Yooj yim muab, nws yog lub tshuab nqus hlau sib nqus. Tam sim no qhov sib txawv yog ua los ntawm analog thiab digital Hall sensors.
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Cov ntsuas ntsuas txiav txim seb puas muaj lossis tsis muaj ntawm daim teb. Ntawd yog, yog tias qhov pib nkag mus txog qee qhov pib - lub ntsuas hluav taws xob muab qhov pom ntawm qhov chaw nyob rau hauv daim ntawv ntawm qee qhov kev xav, yog tias qhov pib tsis mus txog - lub ntsuas hluav taws xob muab cov zauv xoom. Ntawd yog, nrog qhov ua kom tsis muaj zog thiab, raws li, qhov ua tau zoo ntawm lub ntsuas, qhov muaj ntawm thaj chaw yuav tsis raug kuaj pom. Qhov tsis zoo ntawm qhov ntsuas no yog muaj nyob ntawm thaj tsam tuag ntawm qhov pib.
Digital Hall sensors kuj tau muab faib ua: bipolar thiab unipolar.
- Unipolar - ua rau muaj nyob ntawm thaj chaw ntawm qee qhov kev sib txawv thiab muab tua thaum qhov chaw pib qis dua.
- Bipolar - hnov mob rau qhov hloov pauv ntawm qhov sib txawv ntawm qhov chaw, uas yog, ib qho polarity tig rau ntawm lub sensor, lwm qhov tig nws tawm.
- Analog Hall Sensors - hloov qhov kev nkag mus rau hauv qhov hluav taws xob, tus nqi pom los ntawm lub ntsuas cua nyob ntawm qhov sib txawv ntawm qhov chaw thiab nws lub zog. Tab sis ntxiv, koj yuav tsum txiav txim siab qhov kev ncua deb ntawm lub sensor tau teeb tsa.
Hall sensor siv nyob qhov twg?
Hall sensors tau dhau los ua ib feem ntawm ntau yam khoom siv. Yeej, tau kawg, lawv tau siv rau lawv lub hom phiaj uas xav tau thiab ntsuas lub zog ntawm qhov chaw sib nqus. Lawv tau siv hauv cov tshuab hluav taws xob thiab txawm tias muaj kev hloov pauv tshiab xws li cov tshuab foob pob hluav taws ion. Feem ntau, Hall sensor tau ntsib thaum siv lub tsheb tiv thaiv kab mob. Xws li cov piv txwv yooj yim: kev hloov pauv nyob ze, ntsuas ntsuas dej, tsis ntsuas kev ntsuas tam sim no hauv cov neeg tsav tsheb, tswj lub cev, nyeem cov lej sib nqus, thiab, ntawm chav kawm, Hall sensors tsis tuaj yeem pab hloov qhov hloov pauv reed, vim tias lawv qhov txiaj ntsig tseem ceeb yog lawv tsis cuam tshuam.
Hall sensor ua haujlwm txoj cai
Hall sensor ua haujlwm li cas thiab qhov cuam tshuam tsis sib cuag no los qhov twg los? Hall pom tias yog tias lub phaj tau muab tso rau hauv qhov chaw sib nqus hauv qhov nro, uas yog, nrog cov dej ntws ntws los ntawm nws, tom qab ntawd cov khoom siv hluav taws xob hauv cov phaj no yuav thim qhov sib npaug rau qhov kev taw qhia ntawm qhov sib nqus. Cov kev taw qhia ntawm qhov kev cuam tshuam no nyob ntawm qhov sib txawv ntawm qhov sib nqus. Qhov tshwm sim hu ua Hall effect. Yog li, qhov ntom ntawm cov hluav taws xob ntawm ob sab ntawm lub phaj yuav sib txawv, uas yuav tsim qhov muaj peev xwm sib txawv. Qhov sib txawv no raug ntes los ntawm Hall sensors.
Hauv qab no koj tuaj yeem pom cov txheej txheem ntawm kev ua haujlwm ntawm Hall sensor, piv txwv li, tau siv lub tsheb tiv thaiv kab ke.
Yuav ua li cas los ntsuas lub sensor sensor rau kev ua tau zoo?
Yog tias koj tau ntsib teeb meem no hauv lub neej txhua hnub, feem ntau koj yuav yog tus tsav tsheb. Lawm, txoj hauv kev yooj yim tshaj plaws, yog qhov ua tau zoo ntawm lub ntsuas ntsuas tsis ntseeg, yog hloov nws nrog qhov paub zoo. Thiab yog tias qhov hloov pauv qhov teeb meem, tom qab ntawd cov lus teb yog pom tseeb.
Yog tias koj tsis muaj lub sensor ua haujlwm ntawm tes, koj tuaj yeem tsim cov cuab yeej yooj yim uas simulates nws txoj haujlwm. Txhawm rau ua qhov no, koj tsuas yog xav tau ib daim hlau thiab txuas peb-ntsaws los ntawm cov khoom siv hluav taws xob.
Txog kev kuaj mob, koj tseem tuaj yeem siv tus ntsuas ntsuas zoo ib yam. Yog tias koj lub ntsuas phoo tsis raug, ces tus ntsuas ntsuas nyeem ntawv yuav tsum tsawg dua 0.4 V.
Koj tseem tuaj yeem tshawb xyuas lub txim taws thaum qhib qhov hluav taws. Txhawm rau ua qhov no, koj yuav tsum txuas qhov kawg ntawm cov xaim mus rau qee qhov tawm ntawm qhov hloov.
Yog tias koj tau ntsib nrog Hall sensor ua haujlwm tsis zoo hauv koj lub tsheb, tab sis hauv lwm lub cuab yeej, feem ntau koj yuav xav tau tus ntsuas, thiab txhua yam yuav vam khom lub cuab yeej uas Hall Hall tau thov.
