RF Classification Application

Kev ua haujlwm zaus ntawm RFID cov khoom yog txhais raws li cov khoom sib txawv uas ua tau raws li cov qauv sib txawv nyob rau hauv qhov ntau zaus ntawm cov zaus tsawg, qhov ntau zaus, thiab ntau zaus, thiab RFID cov khoom hauv ntau zaus yuav muaj cov yam ntxwv sib txawv. Muaj ob hom sensors: passive thiab nquag.
Tsawg zaus
Qhov tseeb, RFID thev naus laus zis yog thawj zaug siv dav thiab nce qib hauv qis zaus (los ntawm 125kHz txog 134kHz). Qhov zaus no feem ntau yog ua los ntawm inductive coupling, uas txhais tau hais tias muaj transformer coupling ntawm tus nyeem ntawv kauj thiab inductor kauj. Qhov voltage induced nyob rau hauv inductor kav hlau txais xov los ntawm alternating teb ntawm tus nyeem ntawv yog rectified thiab yuav siv tau raws li lub hwj chim mov voltage. Lub cheeb tsam magnetic teb tuaj yeem txhais tau zoo, tab sis lub zog ntawm lub zog txo qis sai heev.
yam ntxwv:
Kev khiav hauj lwm zaus ntawm cov sensors ua haujlwm ntawm cov zaus tsawg yog li ntawm 120kHz txog 134kHz, thaum lub sijhawm ua haujlwm ntawm TI yog 134.2kHz. Lub wavelength ntawm no zaus band yog kwv yees li 2500m;
1. Ntxiv rau qhov cuam tshuam ntawm cov khoom siv hlau, cov zaus qis feem ntau tuaj yeem dhau los ntawm cov khoom ntawm txhua yam khoom yam tsis tau txo qhov kev nyeem ntawv deb.
2. Tsis muaj kev txwv tshwj xeeb rau cov neeg nyeem tsawg zaus thoob ntiaj teb.
3. Cov khoom siv tsawg zaus tuaj hauv cov ntawv ntim sib txawv. Daim ntawv ntim khoom zoo yog kim dhau, tab sis nws muaj lub neej ntev tshaj 10 xyoo.
Txawm hais tias thaj av sib nqus ntawm qhov zaus no poob sai, nws tuaj yeem tsim cov cheeb tsam nyeem thiab sau ntawv zoo ib yam.
5. Muab piv rau RFID cov khoom nyob rau hauv lwm zaus bands, cov ntaub ntawv kis tau tus mob nyob rau hauv no zaus band yog kuj qeeb.
Tus nqi ntawm cov sensors kuj tseem kim piv rau lwm cov zaus bands.
Cov ntawv thov tseem ceeb:
Txoj kev tswj xyuas tsiaj txhu; Daim ntawv thov ntawm lub tsheb tiv thaiv tub sab nyiag thiab lub qhov rooj qhib qhov rooj; Daim ntawv thov ntawm marathon khiav system; Tsis siv neeg qhov chaw nres tsheb tus xov tooj hu thiab tswj lub tsheb; Kev siv cov tshuab refueling tsis siv neeg; Daim ntawv thov ntawm lub tsev so qhov rooj xauv qhov system; Kev tswj kev nkag mus thiab kev tswj xyuas kev ruaj ntseg.
siab zaus
Ntawm cov zaus siab (ua haujlwm ntawm 13.56MHz), lub inductor tsis tas yuav tsum tau coils yuav raug mob, thiab cov kav hlau txais xov tuaj yeem ua los ntawm corrosion lossis luam ntawv. Sensors feem ntau ua haujlwm los ntawm kev hloov pauv load. Ntawd yog, los ntawm kev tig thiab tawm ntawm qhov kev ua haujlwm ntawm lub inductor, qhov hluav taws xob ntawm tus nyeem ntawv / tus kws sau ntawv kav hlau txais xov hloov pauv, ua tiav qhov kev hloov pauv ntawm lub kav hlau txais xov hluav taws xob siv cov chaw taws teeb inductor. Yog tias tib neeg tswj qhov qhib thiab tawm ntawm qhov hluav taws xob los ntawm cov ntaub ntawv, cov ntaub ntawv no tuaj yeem xa tawm los ntawm cov sensors mus rau cov nyeem thiab cov neeg sau ntawv.
yam ntxwv:
1. Kev ua haujlwm zaus yog 13.56MHz, thiab lub wavelength ntawm no zaus yog kwv yees li 22m;
2. Tsuas yog cov ntaub ntawv hlau, lub wavelength ntawm qhov zaus no tuaj yeem dhau los ntawm cov ntaub ntawv feem ntau, tab sis nws feem ntau txo qhov kev nyeem ntawv deb. Lub sensor yuav tsum nyob deb ntawm cov hlau rau ib qho kev ncua deb;
3. Cov kab hluav taws xob no tau lees paub thoob ntiaj teb yam tsis muaj kev txwv tshwj xeeb;
4. Sensors feem ntau yog nyob rau hauv daim ntawv ntawm hluav taws xob cim npe;
Txawm hais tias thaj av sib nqus ntawm qhov zaus no poob sai, nws tuaj yeem tsim kom muaj ib cheeb tsam nyeem thiab sau ntawv;
6. Lub kaw lus muaj cov yam ntxwv tiv thaiv kev sib tsoo thiab tuaj yeem nyeem ntau daim ntawv hluav taws xob ib txhij;
7. Nws tuaj yeem sau qee cov ntaub ntawv cov ntaub ntawv rau hauv cov ntawv lo;
8. Cov ntaub ntawv kis tau tus mob sai dua qhov tsawg zaus, thiab tus nqi tsis kim heev.