Cov cim npe hauv hluav taws xob tuaj yeem muab faib ua peb pawg: kev sib xyaw ua ke hauv Circuit Court curing hom, teb wired rewriting hom thiab teb wireless rewriting hom raws li kev txhaj tshuaj sib txawv ntawm cov ntaub ntawv sab hauv; Raws li kev siv cov kev siv txhais tau tias ntawm kev nyeem cov ntaub ntawv hluav taws xob tag, lawv tuaj yeem muab faib ua peb pawg Muaj peb hom kev tshaj tawm xov xwm, hom zaus ob npaug thiab hom kev hloov pauv hloov pauv; Raws li txoj kev sib txawv ntawm cov khoom siv hluav taws xob (cov roj teeb hluav taws xob), RFID thev naus laus zis tuaj yeem muab faib ua peb hom: active, passive thiab semi-active. Cov kev faib tawm nrov tshaj plaws ntawm RFID yog tias, raws li qhov sib txawv ntawm kev khiav hauj lwm zaus (unit: Hz), nws muab faib ua plaub hom: tsawg zaus (LF), siab zaus (HF), ultra-high zaus (UHF) thiab microwave. zaus (MW).
(1) Qhov qis / siab zaus feem ntau muaj qhov ua haujlwm ntau zaus<30mhz, and="" the="" typical="" working="" frequency="" is="" 125khz,="" 225khz,="" 13.56mhz="" (contactless="" ic="" card="" -="" the="" working="" frequency="" of="" the="" radio="" frequency="" card)="" and="" so="" on.="" radio="" frequency="" identification="" systems="" based="" on="" these="" frequencies="" generally="" have="" corresponding="" international="" standards,="" and="" their="" basic="" characteristics="" are:="" the="" cost="" of="" electronic="" tags="" is="" low,="" the="" amount="" of="" data="" stored="" in="" the="" tags="" is="" small,="" and="" the="" reading="" distance="" is="" short="" (in="" the="" passive="" case,="" the="" typical="" reading="" distance="" is="" 10cm),="" electronic="" tags="" have="" various="" shapes="" (card-shaped,="" ring-shaped,="" button-shaped,="" pen-shaped),="" and="" the="" reading="" antenna="" is="" not="">
(2) UHF/microwave systems feem ntau muaj ntau zaus ua hauj lwm> 400MHz, thiab cov zaus ua haujlwm feem ntau yog 915MHz, 2450MHz, 5800MHz, thiab lwm yam. Lub kaw lus kuj tau txais kev txhawb nqa los ntawm ntau cov qauv thoob ntiaj teb hauv cov zaus bands. Cov yam ntxwv tseem ceeb yog: tus nqi ntawm cov ntawv cim hluav taws xob thiab cov neeg nyeem ntawv yog siab, cov ntaub ntawv khaws cia hauv cov cim npe loj, qhov kev nyeem ntawv ntev ntev (txog li ob peb metres mus rau kaum ob meters), thiab nws yog qhov tsim nyog rau cov khoom. Nws muaj kev ua haujlwm siab ceev nrawm, thiab cov duab feem ntau yog daim npav zoo li. Ob lub kav hlau txais xov nyeem ntawv thiab cov kav hlau txais xov hluav taws xob muaj zog muaj zog.
(3) Cov ntawv cim hluav taws xob nquag tau nruab nrog cov roj teeb, uas feem ntau muaj kev nyeem ntawv ntev. Qhov tsis zoo yog tias lub neej ntawm lub roj teeb yog txwv (3 mus rau 10 xyoo); tsis muaj roj teeb nyob rau hauv lub passive electronic tag, tom qab nws tau txais lub teeb liab microwave xa los ntawm tus nyeem ntawv (disconnecting ntaus ntawv), nws converts ib feem ntawm lub microwave zog mus rau hauv ncaj qha tam sim no rau nws tus kheej ua hauj lwm. Feem ntau saib xyuas-dawb. Piv nrog rau cov tshuab ua haujlwm, cov tshuab passive muaj qee qhov txwv me ntsis ntawm kev nyeem ntawv nyob deb thiab yoog raws qhov nrawm ntawm cov khoom txav.