Lub diffraction lub kaum sab xis ntawm lub wireless sensor modulator yog txiav txim siab los ntawm lub sij hawm ntev ntawm lub zuag-zoo li tus electrode, thiab daim ntawv thov ntau yam tsis dav li ntawm lub acousto-optic modulator. Lub luag haujlwm ntawm lub modulator yog ntxiv qee yam ntaub ntawv rau lub teeb nthwv dej rau lub sijhawm luv luv yam tsis hloov txoj kev kho qhov muag. Feem ntau, tsuas yog ib txoj hauv kev tso cai rau ua haujlwm, thiab lub modulator yuav tsum raug muab tua thaum tau txais cov ntaub ntawv.
Lub wireless PBI sensor network feem ntau muaj cov yam ntxwv tseem ceeb hauv qab no:
(1) Lub koom haum tus kheej. Cov nodes ntawm lub sensor network system muaj kev ua haujlwm ntawm kev sib txuas lus tsis siv neeg, thiab cov nodes tuaj yeem sib txuas lus nrog ib leeg thiab koom tes nrog lawv txoj haujlwm.
(2) Multi-hop routing. Nodes raug txwv los ntawm kev sib txuas lus deb, tswj fais fab lossis txuag hluav taws xob. Thaum lub node tsis tuaj yeem sib txuas lus ncaj qha nrog lub rooj vag, nws yuav tsum tau xa los ntawm lwm cov nodes kom tiav cov ntaub ntawv xa mus. Yog li ntawd, lub network cov ntaub ntawv kis tau tus mob txoj kev yog multi-hop.
(3) Dynamic network topology. Hauv qee daim ntawv thov tshwj xeeb, lub wireless sensor network yog mobile, thiab cov sensor nodes yuav tsum tsis ua haujlwm vim lub zog qaug zog lossis lwm yam tsis ua haujlwm. Cov xwm txheej no yuav hloov lub network topology.
(4) Node cov peev txheej raug txwv. Node miniaturization yuav tsum tau thiab tsawg lub zog ua rau cov khoom siv kho vajtse tsawg.
Cov xwm txheej tam sim no ntawm kev siv wireless sensor network
Daim ntawv thov ntawm sensor network yog ze ze rau qhov tshwj xeeb daim ntawv thov ib puag ncig, yog li muaj wireless sensor network systems nrog sib txawv ua yeeb yam rau ntau daim ntawv thov teb.
Cov ntawv thov hauv kev ua tub rog:
Hauv kev siv tub rog, kev siv PBI modulator network tuaj yeem saib xyuas lub zog thiab cov khoom siv hauv cov yeeb ncuab cheeb tsam, saib xyuas qhov xwm txheej ntawm kev sib ntaus sib tua hauv lub sijhawm, nrhiav lub hom phiaj, saib xyuas nuclear lossis biochemical tawm tsam, thiab lwm yam.
Environmental monitoring applications:
Kev siv cov wireless sensor tes hauj lwm hauv kev saib xyuas ib puag ncig tuaj yeem ua tiav cov haujlwm uas tsis tuaj yeem ua tiav los ntawm cov kab ke ib txwm muaj. Kev soj ntsuam ib puag ncig muaj xws li: ib puag ncig kev loj hlob ntawm cov nroj tsuag, ib puag ncig kev ua si tsiaj, kev saib xyuas biochemical, kev saib xyuas kev ua liaj ua teb, kev saib xyuas hav zoov, kev saib xyuas dej nyab, thiab lwm yam.
Kev saib xyuas lub tsev:
Lub wireless sensor network yog siv los saib xyuas kev noj qab haus huv ntawm cov tsev. Nws tsis yog tsuas yog tus nqi qis xwb, tab sis kuj tuaj yeem daws cov teeb meem ntawm txoj hlua khi, cov kab laus, thiab qhov tsis zoo rau kev puas tsuaj hauv kev saib xyuas ib txwm muaj.
