Lub peev xwm ntawm analog-rau-digital converters tau tham ntev lawm. Txawm tias ua ntej lawv qhov kev tsim kho, kev sib tham ntawm lawv lub peev xwm tsis ncav cuag tsuas yog cov ntaub ntawv keeb kwm science. Lawv qhov zoo li tau cog lus tias yuav muaj kev cia siab zoo hauv cov khoom siv hluav taws xob, mus txog qhov tsim ntawm kev txawj ntse. Thiab qhov tseeb, lub teeb liab analog yog "incomprehensible" rau xws li ib tug ntaus ntawv, piv txwv li, ib tug processor. Nyob rau tib lub sij hawm, raws li ib tug digitized analog teeb liab, nws yog "to taub" los ntawm tag nrho cov pab kiag li lawm. Qhov txuas txuas hauv qhov no yog ib qho analog-rau-digital converter. Qhov no yog ib tug universal ntaus ntawv uas tso cai rau koj mus hloov lub analog teeb liab mus rau ib tug discrete code.
Qhov kev xav tau ntawm cov khoom siv zoo li no tau hais los ntawm lub sijhawm nws tus kheej. Nrog rau txoj kev loj hlob ntawm hluav taws xob circuits, thawj cov khoom siv digital tau tshwm sim. Lawv muaj kev tswj tau zoo, raug zoo thiab ua haujlwm zoo. Lawv tuaj yeem ua tau ntau yam dej num uas tsis tuaj yeem daws tau nrog cov qauv analog circuit. Ua piv txwv, piv rau thawjlub tshuab nqus tsev lub tshuab nqus tsev vacuum uas yog qhov loj ntawm lub tsev ob-zaj dab neeg thiab lub laptop niaj hnub qauv.
Tab sis txawm li cas los xij, cov tsim hluav taws xob hluav taws xob tsis tau tso tseg cov teeb liab analog kom deb li deb. Qhov tseeb yog tias feem ntau ntawm cov sensors uas twb muaj lawm ua haujlwm nrog nws. Tsis tas li ntawd, nws tseem siv tau rau hauv kev tsim thiab ua haujlwm zoo nrog cov haujlwm uas tau muab rau nws. Nws yog "cov ntaub ntawv" ntau dua li nws cov khoom siv digital, thiab cov khoom siv ntawm nws
piv muaj kev ua tau zoo heev. Qhov no yog ib qho tseem ceeb thaum kev khiav hauj lwm tswj circuits, xws li ib tug hluav taws xob tsav.
Tus hloov pauv A / D yog tsim los ua kom ob lub cuab yeej ua haujlwm ua ke.
Nws tuaj yeem siv los hloov pauv, piv txwv li, lub teeb liab los ntawm qhov ntsuas kub ntawm qhov ntsuas lossis ntsuas ntsuas mus rau hauv binary code thiab siv lub microcontroller los tswj lub xeev ntawm cov khoom tswj.
Ntxiv rau kev tiv thaiv thiab tswj cov circuits, lub analog-to-digital converter tau ua tiav siv los tswj cov hluav taws xob ntawm ntau lub peev xwm. Qhov kev txwv nkaus xwb hauv qhov no yog qhov nrawm ntawm kev sib sau ua ke raws li nws
dev. Cov tuam txhab muaj npe nrov tsim cov tswj kev tswj tus kheej uas siv los ua kom ntseeg tau tias kev ua haujlwm ntawm cov cav. Piv txwv li, ib tug zaus converter muaj xws li ib tug analog-rau-digital converter, uas muaj peev xwm "hloov" cov teeb liab los ntawm sensors thiab xa cov ntaub ntawv tau txais mus rau.processor.
Ib qho piv txwv yooj yim ntawm lawv siv yog ib qho voltmeter zoo tib yam, uas suav nrog lub tshuab hloov digital. Feem ntau, cov khoom siv no ua haujlwm tau zoo dua li lawv cov analogues.
Cov khoom siv xws li analog-rau-digital converters tau ruaj khov rau hauv cov khoom siv hluav taws xob uas twb muaj lawm. Txoj kev loj hlob ntawm lawv cov cuab yeej tsim khoom thiab qhov tshwm sim ntawm cov teeb liab hloov dua siab tshiab tau hloov mus rau kev nce nrawm ntawm cov khoom siv no.
