Ob leeg Multiplexers thiab Fais Fab Dividers yog cov cuab yeej pab tau los nthuav cov xov tooj ntawm cov kav hlau txais xov uas tuaj yeem txuas rau ib tus nyeem ntawv qhov chaw nres nkoj. Ib qho txiaj ntsig tseem ceeb yog txo tus nqi ntawm daim ntawv thov UHF RFID los ntawm kev sib koom cov khoom siv kim. Hauv tsab ntawv blog no, peb piav qhia qhov sib txawv thiab qhov yuav tsum tau xav txog thaum xaiv cov cuab yeej zoo rau koj daim ntawv thov.
Dab tsi yog multiplexer thiab de-multiplexer?
Txhawm rau nkag siab tias tus nyeem ntawv RFID Multiplexer yog dab tsi peb yuav piav qhia lub hom phiaj dav dav ntawm multiplexers (mux) thiab de-multiplexers (de-mux).
Multiplexer yog ib qho khoom siv uas xaiv ib qho ntawm ntau lub tswv yim tawm tswv yim thiab xa mus rau qhov tso zis.
Lub demultiplexer yog ib qho khoom siv uas xa cov teeb liab tawm tswv yim mus rau ib qho ntawm ob peb qhov tawm.
Ob leeg multiplexer thiab de-multiplexer xav tau cov keyboards los xaiv cov khoom siv thiab / lossis cov khoom tawm. Cov keyboards no yog powered, thiab yog li mux thiab de-mux yog cov khoom siv nquag.
Dab tsi yog RFID nyeem ntawv multiplexer?
RFID nyeem ntawv multiplexer yog ib qho khoom siv uas yog kev sib txuas ntawm mux thiab de-mux. Nws muaj ib lub tswv yim / tso zis chaw nres nkoj thiab ntau qhov chaw tso zis / tawm tswv yim. Ib qho chaw nres nkoj ntawm mux / de-mux feem ntau txuas nrog RFID nyeem ntawv thaum muaj ntau qhov chaw nres nkoj tau mob siab rau kev sib txuas kav hlau txais xov.
Nws yog xa mus rau lub teeb liab los ntawm RFID nyeem ntawv qhov chaw nres nkoj mus rau ib qho ntawm ntau qhov chaw tso zis lossis xa cov teeb liab los ntawm ib qho ntawm ntau qhov chaw nkag mus rau RFID nyeem ntawv qhov chaw nres nkoj.
Ib qho kev hloov hauv built-in saib xyuas lub teeb liab hloov ntawm cov chaw nres nkoj thiab nws lub sijhawm hloov pauv.
RFID multiplexer ua rau ntau lub kav hlau txais xov txuas mus rau ib qho chaw nres nkoj ntawm RFID nyeem ntawv. Qhov loj ntawm lub teeb liab hloov tsis cuam tshuam loj, tsis hais tus naj npawb ntawm cov chaw nres nkoj hauv mux / de-mux.
Txoj kev ntawd, 8-chaw nres nkoj RFID multiplexer, piv txwv li, tuaj yeem txuas ntxiv 4-chaw nres nkoj nyeem ntawv rau hauv 32-port RFID nyeem ntawv.
Qee lub khw tseem hu lawv lub mux lub hub.
Dab tsi yog lub hwj chim faib (lub hwj chim splitter) thiab lub hwj huam sib txuas?
Lub zog faib hluav taws xob (splitter) yog cov cuab yeej uas faib lub zog. Ib qho 2-chaw nres nkoj fais fab faib faib lub zog nkag rau hauv ob qhov tso zis. Qhov loj ntawm lub zog yog halved nyob rau hauv cov zis ports.
Lub hwj chim faib yog hu ua lub hwj huam sib txuas thaum siv rov qab.
Nov yog cov ntsiab lus nrawm ntawm qhov sib txawv ntawm mux thiab lub zog faib hluav taws xob:
| MUX | Hwj chim DIVIDER |
| Ib mux yuav muaj lub zog tsis tu ncua thoob plaws cov chaw nres nkoj tsis hais txog ntawm cov chaw nres nkoj. Ib qho 4-chaw nres nkoj, 8-chaw nres nkoj, thiab 16-chaw nres nkoj mux yuav tsis muaj qhov sib txawv ntawm ib qhov chaw nres nkoj. | Lub hwj chim faib yuav faib lub hwj chim rau ½ lossis ¼ nyob ntawm seb muaj pes tsawg lub chaw nres nkoj. Kev txo hwj chim ntau dua yog muaj nyob rau hauv txhua qhov chaw nres nkoj raws li tus naj npawb ntawm cov chaw nres nkoj tau nce. |
| Mux yog ib yam khoom siv. Nws yuav tsum tau DC lub zog thiab tswj cov cim ua haujlwm. | Lub zog faib hluav taws xob yog ib qho khoom siv passive. Nws tsis xav tau ib qho kev tawm tswv yim ntxiv dua li RF input. |
| Tsis yog txhua qhov chaw nres nkoj hauv ntau qhov chaw nres nkoj mux tau qhib tib lub sijhawm. Lub zog RF yog hloov ntawm cov chaw nres nkoj. Tsuas yog ib lub kav hlau txais xov txuas nrog yuav muaj zog ntawm ib lub sijhawm, thiab kev hloov pauv ceev ceev heev uas cov kav hlau txais xov yuav tsis nco ib daim ntawv nyeem. | Tag nrho cov chaw nres nkoj hauv ntau qhov chaw nres nkoj fais fab faib tau lub zog sib npaug thiab tib lub sijhawm. |
| Kev sib cais siab heev ntawm cov chaw nres nkoj tau ua tiav. Qhov no yog qhov tseem ceeb kom tsis txhob muaj kev nyeem ntawv hla nruab nrab ntawm cov kav hlau txais xov. Kev rho tawm feem ntau yog nyob hauv thaj tsam ntawm 35 dB lossis ntau dua. | Qhov chaw nres nkoj cais me ntsis tsawg dua piv rau Mux. Ib qho chaw nres nkoj cais yog nyob ib ncig ntawm 20 dB lossis ntau dua. Hla tag nyeem yuav dhau los ua qhov teeb meem. |
| Muaj tsawg los yog tsis muaj kev cuam tshuam nyob rau hauv lub kav hlau txais xov lub nqaj lossis tshem tawm. | Thaum lub hwj chim faib tsis tau siv raws li txoj cai, RF teb tuaj yeem raug tshem tawm, thiab tus kav hlau txais xov RF beam tuaj yeem hloov pauv tau. |
| Tsis muaj kev txawj ntse RF yuav tsum tau nruab Mux. Mux yuav tsum tau tswj los ntawm RFID nyeem ntawv software. | RF kev txawj ntse yog qhov tseem ceeb rau kev teeb tsa lub zog faib hluav taws xob thiab ua tiav cov kev daws teeb meem ua haujlwm. Ib qho kev teeb tsa hluav taws xob tsis raug cai yuav ua rau qhov ua tau zoo ntawm RF. |
| Tsis muaj kev cai kav hlau txais xov hloov tau | Kev cai kav hlau txais xov hloov kho yog siv tau. Antenna's beam-dav, beam angle, thiab lwm yam tuaj yeem hloov tau. |
Si Chuan Keenlion Microwave xaiv loj, npog zaus ntawm 0.5 txog 50 GHz. Lawv tau tsim los tswj los ntawm 10 mus rau 200 watts input zog hauv 50-ohm kis tau tus mob. Cavity tsim yog siv, thiab optimized rau kev ua tau zoo tshaj plaws.
Ntau ntawm peb cov khoom tsim tau tsim xws li lawv tuaj yeem ntsia hlau-down mounted rau lub heatsink, yog tias tsim nyog. Lawv kuj muaj qhov tshwj xeeb amplitude thiab theem sib npaug, muaj lub zog siab tuav, qib kev sib cais zoo heev thiab tuaj nrog cov ntim khoom hnyav.
Peb kuj tuaj yeem kho cov khoom rf passive raws li koj xav tau. Koj tuaj yeem nkag mus raukev cainplooj ntawv los muab cov kev qhia tshwj xeeb uas koj xav tau.
Post lub sij hawm: Oct-28-2022
