AMR Sensor Magnet

Qee Qhov Taw Qhia ntawm AMR sensor

AMR sensor tuaj yeem paub qhov tsis muaj zog magnetic teb ntsuas uas nyob rau hauv thaj tsam ntawm geomagnetic teb, thiab tom qab ntawd tau siv dav hauv ntau thaj chaw, suav nrog kev siv lub ntsuas ntsuas, qhov ntsuas qhov sib hloov, qhov ntsuas qhov ntsuas qhov ntsuas thiab trajectory tracker ntawm virtual kev muaj tiag. AMR sensor xav tau kom haum AMR sensor hlau nplaum thaum ntsuas ntawm linear androtation txoj hauj lwm.

Dab tsi yog Anisotropic Magnetoresisance (AMR) Effect?

Anisotropic Magnetoresistance (AMR) Cov nyhuv yog qhov tshwm sim uas hluav taws xob tiv thaiv ntawm ferromagnetic khoom (xws li NiFe thiab NiCo alloys) hloov nrog lub kaum sab xis ntawm cov kev taw qhia tam sim no thiab sab nraud magnetic teb siv rau cov khoom ferromagnetic. AMR Effect tau tshawb pom nyob rau hauv ferromagnetic polycrystal los ntawm William Tompson, 1st Baron Kelvenin 1857. Tom qab ntawd, AMR Effect tau txais kev saib xyuas ntau dua kom txog thaum npaj lub taub hau sib nqus raws li AMR Effect hauv 1971.

Cov khoom tseem ceeb ntawm AMR sensor yog anisotropic magnetic rhiab heev cov khoom, thiab permalloy yog qhov kev xaiv tshaj plaws nyob rau tam sim no. Thethin khoom zaj duab xis ntawm permalloy yuav tsim resistor sawb tom qab tso rau saum npoo ntawm silicon nti, yog li ntawd, nws cov grain loj thiab morphology muaj feem cuam tshuam rau kev ua haujlwm ntawm lub sensor.

Hais txog AMR Sensor Magnets

Ob lub ferrite thiab cov hlau nplaum tsis tshua muaj hauv ntiaj teb tuaj yeem siv ua AMR sensor hlau nplaum. Yog li AMR sensor yuav tsum muab cov hlau nplaum tsim nyog los ua kom pom qhov ua tau zoo tshaj plaws. Nws yuav tsum tau muab sau tseg hais tias kuj high magnetic teb yog conductive los txo cov kev cuam tshuam ntawm stray magnetic teb mus rau qhov tseeb sensor. Alignment degree ntawm geometry chaw nruab nrab ntawm AMR sensor thiab hlau nplaum kuj tseem ceeb heev uas yuav ua rau yuam kev ntawm tag nrho cov system. Nyob rau hauv lub caij no, lub zog hlau nplaum nyob ze ntawm cov hlau nplaum nto tsis txaus homogeneous, yog li, qhov sib txawv ntawm huab cua yog txiav txim los ntawm ntau yam. Hongyu tau sau ntau yam magnetoresistance sensor hlau nplaum, thiab vam tias yuav muab cov tshuaj txhim khu kev qha thiab kev lag luam rau koj.

Cim npe nrov: amr sensor hlau nplaum