GMR Sensor Magnet

Qee qhov Taw Qhia ntawm GMR Sensor

Lub kaum sab xis thiab txoj hauj lwm sensors raws li Giant Magnetoresistance (GMR) Cov nyhuv yog dav siv rau CNC tshuab, ntsuas tsheb ceev, tsis sib cuag mus thiab teb encoder. GMR sensor muaj lub zog qis thiab ntim, lub sijhawm no, kev ntseeg tau thiab cov teeb liab tso tawm yog qhov siab.

Giant Magnetoresistance (GMR) Effect yog dab tsi?

Cov nyhuv Magnetoresistance xa mus rau qhov kev hloov pauv ntawm tus neeg xyuas pib thiab ib nrab tus neeg xyuas pib nyob rau hauv qhov chaw sib nqus, yog li ntawd, qhov magnetoresitancevalue ntau dua 10 npaug ntawm cov hlau nplaum, thiab qhov tshwm sim no hu ua Giant Magnetoresistance (GMR) Effect. Giant Magnetoresistance (GMR) Effect tau tshawb pom los ntawm Peter Grunberg thiab Albert Fert hauv xyoo 1988, thiab yog li lawv yeej qhov khoom plig Nobel rau lawv qhov kev tshawb pom xyoo 2007.

Ib qho ntawm cov khaubncaws sab nraud povtseg yog suav tias yog txheej txheej siv uas tau kho cov kev taw qhia magnetization, thiab lwm qhov yog hu ua freelayer uas magnetization kev taw qhia hloov nrog cov kev taw qhia ntawm sab nraud sib nqus hlau nplaum. Lub spacer nruab nrab ntawm cov txheej dawb thiab cov txheej txheem siv yog tsim los ntawm cov yeeb yaj kiab uas tsis yog hlau nplaum. Qhov loj magnetoresistancevalue yog txiav txim los ntawm lub kaum sab xis ntawm ob txheej magnetization kev taw qhia. Tus nqi qis tshaj yuav tau txais thaum magnetization kev taw qhia ntawm cov dawb txheej thiab cov txheej txheem siv tib yam, thiab cov kev coj rov qab yuav tau txais qhov siab tshaj plaws magnetoresistance tus nqi.

Hais txog GMR Sensor Magnet

Nws yuav tsum raug sau tseg tias GMR sensor thiab Hall Effect sensor ntes kab rov tav magnetic teb thiab ntsug magnetic teb tiv thaiv qhov chaw hlau nplaum raws li. Kev ua haujlwm ntawm GMR sensor muaj qee qhov kev xav tau hais txog lub zog sib nqus, yog li ntawd, GMR sensor hlau nplaum yuav tsum muaj zog txaus sib nqus lub zog hauv qhov sib txawv ntawm huab cua. Txawm tias loj dhau los yog tsis muaj zog teb lub zog yuav txhim khu ntxiv lub kaum sab xis sib txawv. Lub zog tsis tshua muaj zog tsis tuaj yeem tsav magnetizationdirection ntawm cov txheej dawb ua ke nrog cov chaw sib nqus sab nraud, thiab lub zog muaj zog heev yuav cuam tshuam cov kev taw qhia magnetization ntawm cov txheej txheem siv. Hongyu kuj tau sau ntau yam kev paub hauv GMR sensor hlau nplaum, thiab Hongyu yuav muab cov ncauj lus kom ntxaws txog kev daws teeb meem raws li huab cua sib txawv, qhov kub thiab txias thiab kev ruaj ntseg.