Electromagnetic hluav taws xob los ntawm cov khoom siv ntaub ntawv thiab nws txoj kev tshem tawm
Cov ntaub ntawv hauv cov khoos phis tawj thiab lawv cov khoom siv sab nraud feem ntau xau los ntawm ob txoj hauv kev: hluav taws xob xau yog hais txog hluav taws xob hluav taws xob tsim hauv lub computer, uas tawm hauv cov hluav taws xob hluav taws xob. Qhov hluav taws xob no yog tsim los ntawm ntau cov kab sib kis hauv lub computer (xws li xov tooj ntawm cov ntawv luam tawm), cov teeb liab ua haujlwm, cov logic circuits, cov lus qhia, hloov cov khoom, thiab TTI thiab nws cov tsav tsheb tswj circuits; Lwm hom yog hu ua conductive to, uas yog nqa tawm los ntawm ntau yam circuits thiab hlau pipelines. Cov kab hluav taws xob ntawm lub khoos phis tawj, cov xov tooj hauv chav computer, E cov kav dej thiab cov kav dej cua sov, nrog rau cov xaim hauv av, txhua tus tuaj yeem ua cov khoom siv hluav taws xob thiab ua rau cov dej xau. Cov dej xau feem ntau yog nrog los ntawm hluav taws xob to.
Tam sim no, cov kev ntsuas tau txais los ntawm lub nroog feem ntau suav nrog: siv cov khoom siv hluav taws xob tsawg, siv cov suab nrov cuam tshuam, electromagnetic shielding, filtering technology, thiab fiber optic kis tau tus mob. (1) Siv cov khoom siv hluav taws xob tsawg, tseem hu ua TEMPEST cov cuab yeej. Qhov no yog lub hauv paus ntsuas los tiv thaiv hluav taws xob to. Cov cuab yeej no tau tsim thiab tsim nrog kev ntsuas hluav taws xob tiv thaiv nyob rau hauv qhov chaw kom txo qis electromagnetic to
Tus saib yog qhov txuas tsis muaj zog hauv kev ruaj ntseg hauv computer, thiab kev nyiag cov ntsiab lus ntawm lub monitor yog ib qho kev paub tab technology. Yog li ntawd, xaiv lub ntsuas hluav taws xob tsawg yog qhov tseem ceeb heev. Cov hluav taws xob ntawm cov duab monochrome yog qis dua li cov duab xim, thiab kev siv cov duab plasma lossis LCD tuaj yeem txo cov hluav taws xob ntxiv. (2) Siv cov suab nrov cuam tshuam, hluav taws xob hluav taws xob hluav taws xob cuam tshuam siv tshuab siv jammers cuam tshuam rau lub computer hluav taws xob, ua rau cov tub sab nyiag cov ntaub ntawv video nyuaj. Muaj ob txoj hauv kev los siv cov suab nrov cuam tshuam: ib qho yog tso lub suab nrov uas tsim cov jammer ntawm ib sab ntawm lub tshuab computer, thiab lub suab nrov tsim los ntawm lub down scrambler radiates sab nraud nrog rau cov ntaub ntawv hluav taws xob tsim los ntawm lub computer, ua rau cov hluav taws xob tsim los ntawm lub khoos phis tawj ntaus ntawv nyuaj rau lees txais thiab rov tsim dua. Cov hluav taws xob hluav taws xob hluav taws xob tsim los ntawm jammer yuav tsum tsis txhob tshaj EMI (electromagnetic cuam tshuam) tus qauv; Qhov thib ob yog tso lub khoos phis tawj uas ua cov ntaub ntawv tseem ceeb hauv qhov chaw thiab nyob ib puag ncig nws nrog qee cov khoom siv uas ua cov ntaub ntawv dav dav, kom cov hluav taws xob xaim hluav taws xob tsim los ntawm cov cuab yeej no tuaj yeem tawm sab nraud ua ke.
(3) Electromagnetic shielding thev naus laus zis yog cov txheej txheem ntawm kev muab cov cuab yeej siv computer hauv qhov chaw tiv thaiv kom tsis txhob muaj hluav taws xob hluav taws xob. Cov tshuab no yog qhov kev ntseeg siab tshaj plaws ntawm txhua qhov kev tiv thaiv hluav taws xob. Lwm txoj hauv kev tiv thaiv kev siv tshuab yog siv cov ntaub ntawv los tiv thaiv iav. Txhim kho cov ntaub ntawv los tiv thaiv cov iav rau ntawm lub qhov rais ntawm cov khoom siv hluav taws xob tuaj yeem daws qhov teeb meem ntawm cov ntaub ntawv tawm hauv lub qhov rais. Cov kev ntsuas ntsuas tau pom tias yog cov hluav taws xob electromagnetic yoj hluav taws xob yog 100%, cov ntaub ntawv los tiv thaiv cov iav tuaj yeem xa 89% ntawm cov ntaub ntawv mus rau hauv av F los ntawm cov xaim hauv av, thiab tom qab ntawd cuam tshuam 10% ntawm cov ntaub ntawv. Cov teeb liab xau tseem tshuav tsawg dua 1%, uas tsis tuaj yeem rov qab los kom meej thiab ua tiav cov ntaub ntawv, yog li ua tiav kev tsis pub lwm tus paub. (4) Lim tshuab yog ib qho ntxiv rau kev tiv thaiv kev siv tshuab. Cov khoom siv tiv thaiv thiab cov khoom siv tsis tuaj yeem raug kaw tag nrho hauv lub cev tiv thaiv, thiab tseem muaj cov kab hluav taws xob, cov kab teeb liab, thiab cov xov hlau hauv av uas yuav tsum tau txuas nrog lub ntiaj teb sab nraud. Yog li ntawd. Electromagnetic nthwv dej tseem tuaj yeem kis tau los ntawm sab nraud mus rau lub cev tiv thaiv los ntawm kev siv hluav taws xob lossis hluav taws xob, lossis los ntawm lub cev tiv thaiv mus rau sab nraud. Siv cov cuab yeej lim dej, tsuas yog cov teeb liab ntawm qee zaus raug tso cai hla dhau, thaum cov teeb liab ntawm lwm qhov ntau zaus raug thaiv, yog li ua lub luag haujlwm lim dej thiab ua kom muaj txiaj ntsig zoo los cuam tshuam thiab xau. (5) Fiber optic kis tau tus mob yog txoj kev sib txuas lus tshiab. Fiber optic tsis yog-conductive thiab tuaj yeem hla ncaj qha los ntawm kev tiv thaiv lub cev yam tsis tau ntxiv cov lim dej, uas yuav tsis ua rau cov ntaub ntawv to. Cov teeb liab kho qhov muag kis tau nyob rau hauv fiber ntau optic cable tsis tsuas yog muaj zog poob, tab sis kuj tsis muaj teeb meem ntawm cov ntaub ntawv electromagnetic to. Nws tsis tuaj yeem nyiag thiab kho cov teeb liab tawm sab nraud ntawm fiber ntau optic rau ntau xyoo. Piv nrog rau lwm txoj kev sib kis, fiber ntau optical muaj qhov zoo xws li lub peev xwm loj, kev nyab xeeb, kev ntseeg tau, ntau cov ntaub ntawv xa mus, thiab muaj peev xwm tiv thaiv kev cuam tshuam.
