1. Sib nqus teb shielding
Cov khoom siv feem ntau tsis muaj kev cuam tshuam rau kev sib nqus teb, tab sis rau qee yam khoom siv, xws li electron microscopes, biological brain wave scanners, nuclear magnetic resonance imaging systems, mass spectrometers, magnetic field interference can be fatal to interference with these electronic systems. Sib nqus teb tuaj yeem cuam tshuam rau cov khoom siv no uas siv cov hlau nplaum. Yog tias cov kab hluav taws xob hauv CTR cuam tshuam los ntawm sab nraud magnetic teb, lub deflection ntawm electron beam yuav hloov, uas ua rau cov duab distortion. Thaum qhov kev hloov pauv ntawm qhov chaw sib nqus sab nraud yog tib yam li qhov ntsuas zaus ntawm daim teb, cov duab tsuas yog distorted. Thaum qhov zaus ntawm sab nraud magnetic teb txawv ntawm qhov chaw scanning zaus, cov duab yuav yob.
Txhua qhov chaw muaj kev hloov pauv tam sim no, muaj kev hloov pauv hauv magnetic teb. Hauv peb qhov chaw nyob, kev cuam tshuam ntawm magnetic teb feem ntau tshwm sim. Piv txwv li, nyob rau hauv ib ncig ntawm cov hluav taws xob railways, elevators nyob rau hauv high-sawv vaj tse, hluav taws xob vuam cov cuab yeej nyob rau hauv rhiav, electroplating tso tsheb hlau luam, hluav taws xob arc rauv thiab induction cua sov furnaces, thiab lwm yam, thaum lawv ua hauj lwm, lawv tau nrog cov kev hloov loj tam sim no, ua rau. nyob rau hauv kev hloov nyob rau hauv magnetic teb. Vim tias qhov zaus ntawm cov kev cuam tshuam no tsawg heev (feem ntau yog 50Hz lossis 60Hz fais fab zaus AC, qee qhov ncaj qha tam sim no), cov teeb meem no nyuaj heev los daws.
2, magnetic teb shielding txoj cai
Rau qhov tsawg zaus los yog DC magnetic teb shielding, cov cuab yeej rhiab tuaj yeem nyob ib puag ncig los ntawm cov ntaub ntawv ferromagnetic. Siv cov impedance tsawg thiab siab permeability cov yam ntxwv ntawm ferromagnetic cov ntaub ntawv, lub magnetic teb muaj peev xwm ua si lub luag hauj lwm nyob rau hauv lub sab nraud magnetic teb, thiaj li hais tias cov magnetic teb kab nyob ib ncig ntawm lub rhiab ntaus ntawv yog concentrated rau hauv lub shielding khoom, thiaj li hais tias lub magnetic teb nyob rau hauv lub shielding. lub cev tsis muaj zog heev, thiab cov nyhuv thaiv kev sib nqus yog ua si ntawm cov cuab yeej rhiab heev.