Analog kis tau tus mob - Cov pob txha ntawm kev lag luam kev sib txuas lus
Analog kis tau tus mob yog ib txwm txoj kev ntawm conveying cov ntaub ntawv. Tsis zoo li nws cov digital counterpart, nws siv lub teeb liab txuas ntxiv los sawv cev cov ntaub ntawv. Hauv kev tswj hwm kev lag luam, qhov no feem ntau yog qhov tseem ceeb vim xav tau cov lus teb ntawm lub sijhawm tiag tiag thiab kev hloov pauv cov ntaub ntawv.
Kev tshwm sim thiab kev siv ntawm kev tswj kev lag luam thev naus laus zis tau coj los ntawm kev hloov pauv thib peb ntawm kev lag luam, uas tsis yog tsuas yog txhim kho kev ua haujlwm zoo tab sis kuj txuag tau ntau ntawm kev ua haujlwm thiab lwm yam nqi. Kev tswj hwm kev lag luam yog hais txog kev lag luam automation tswj, uas yog hais txog kev siv tshuab computer, microelectronics technology, thiab hluav taws xob txhais tau tias ua kom cov txheej txheem tsim khoom thiab kev tsim khoom ntawm lub Hoobkas ua haujlwm ntau dua, ua haujlwm zoo, meej, thiab tswj tau thiab pom. Lub hauv paus tseem ceeb ntawm kev tswj hwm kev lag luam yog nyob rau hauv cov chaw nres tsheb loj, aerospace, kev tsim vaj tse, kev lag luam kub tswj cua sov, thiab ceramics. Nws muaj irreplaceable zoo. Xws li: Kev saib xyuas lub sijhawm tiag tiag ntawm cov phiaj xwm hluav taws xob yuav tsum tau sau ntau cov ntaub ntawv muaj txiaj ntsig thiab ua tiav kev ua tiav. Kev cuam tshuam ntawm kev tswj hwm kev lag luam thev naus laus zis txhawb kev ua tiav ntawm cov ntaub ntawv loj.
Anatomy ntawm Analog Transmission
Analog kis tau tus mob nrog rau kev siv ntau yam tsis tu ncua ntawm qhov tseem ceeb. Nws hloov lub cev kom muaj nuj nqis, xws li kub lossis siab, rau hauv qhov sib txuam voltage lossis tam sim no cov cim. Qhov kev txuas ntxiv no muab qhov tseeb, ua rau kev sib kis ntawm analog mus rau kev lag luam uas qhov tseeb yog qhov tseem ceeb.
Analog kom muaj nuj nqis yog hais txog qhov kom muaj nuj nqis uas qhov hloov pauv hloov tsis tu ncua hauv qee qhov ntau; uas yog, nws tuaj yeem coj tus nqi (nyob rau hauv tus nqi ntau) nyob rau hauv ib qho chaw (txhais tau sau npe).Qhov ntau npaum li cas yog qhov tsis sib xws, tsis yog qhov hloov pauv tas mus li, thiab tsuas tuaj yeem siv ntau qhov sib txawv, xws li binary digital variables. tuaj yeem nqa ob qhov txiaj ntsig xwb.
Vim li cas thiaj xaiv Analog Transmission?
Analog kis tau tus mob tuaj yeem yog txoj hauv kev zoo ntawm kev xa cov ntaub ntawv rau ntau yam laj thawj:
1. Natural Form:Ntau qhov xwm txheej ntuj yog analog, yog li lawv tsis tas yuav hloov pauv digital ua ntej kev sib kis. Piv txwv li, lub suab thiab pom cov teeb liab yog ib txwm analog.
2. Hardware Simplicity:Analog kis tau tus mob, xws li FM / AM xov tooj cua tshuab, feem ntau yooj yim dua thiab tsis tshua kim tshaj cov tshuab digital. Qhov no muaj txiaj ntsig zoo thaum teeb tsa cov txheej txheem uas tus nqi thiab kev yooj yim yog qhov tseem ceeb.
3. Tsawg Latency:Analog systems feem ntau tuaj yeem muab latency tsawg dua li cov digital, vim lawv tsis tas yuav siv sijhawm rau encoding thiab txiav txim siab lub teeb liab.
4. Smoothing yuam kev:Analog systems tuaj yeem tshem tawm qee hom kev ua yuam kev hauv txoj hauv kev uas cov tshuab digital ua tsis tau. Piv txwv li, hauv cov kab ke digital, ib qho yuam kev me me tuaj yeem ua rau muaj teeb meem loj, tab sis hauv qhov system analog, cov suab nrov me me feem ntau tsuas yog ua rau me me ntawm kev cuam tshuam.
5. Kev xa tawm Analog hla ntau qhov deb:Qee hom analog signals, xws li xov tooj cua nthwv dej, tuaj yeem taug kev deb thiab tsis yooj yim cuam tshuam li qee cov cim digital.
Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum tau hais txog qhov tsis zoo ntawm kev sib kis analog. Piv txwv li, lawv muaj kev cuam tshuam ntau dua rau kev poob zoo vim lub suab nrov, degradation, thiab cuam tshuam, piv rau cov cim digital. Lawv kuj tsis muaj cov yam ntxwv siab heev ntawm cov tshuab digital, xws li kev tshawb nrhiav qhov yuam kev thiab kho qhov muaj peev xwm.
Qhov kev txiav txim siab ntawm analog thiab digital kis tau tus mob yog nyob ntawm cov kev cai tshwj xeeb ntawm daim ntawv thov.
Qhov kub, av noo, siab, ntws tus nqi, thiab lwm yam ntsuas los ntawm lub sensor yog tag nrho cov analog signals, thaum ib txwm qhib thiab ib txwm kaw yog cov teeb liab (tseem hu ua digital). Transmitter signals yog feem ntau analog signals, uas yog 4-20mA tam sim no. los yog 0-5V, 0-10V voltage. Cov neeg ua haujlwm tsim kho nyiam siv 4-20mA los xa cov teeb liab analog hauv cov xwm txheej tswj kev lag luam, thiab tsis tshua siv 0-5V thiab 0-10V.
Yog vim li cas?
Ua ntej, feem ntau electromagnetic cuam tshuam hauv cov chaw tsim khoom lossis chaw tsim kho yog qhov hnyav heev, thiab cov cim hluav taws xob muaj kev cuam tshuam ntau dua li cov cim tam sim no. Ntxiv mus, qhov kev ncua deb ntawm lub teeb liab tam sim no nyob deb tshaj qhov kev ncua deb ntawm lub teeb liab voltage thiab yuav tsis ua rau lub teeb liab attenuation.
Thib ob, Lub teeb liab tam sim no ntawm cov twj paj nruag dav dav yog 4-20mA (4-20mA txhais tau tias qhov tam sim no yam tsawg kawg nkaus yog 4mA, qhov siab tshaj plaws tam sim no yog 20mA). Qhov qis tshaj 4mA yog siv vim nws tuaj yeem ntes qhov cuam tshuam ntawm kev sib txuas. Qhov siab tshaj plaws 20mA yog siv los ua kom tau raws li qhov yuav tsum tau ua kom tawg, vim tias lub txim hluav taws xob muaj peev xwm tshwm sim los ntawm kev tawm ntawm 20mA tam sim no lub teeb liab tsis txaus rau ignite qhov tawg ntawm cov roj combustible. Yog tias nws siab tshaj 20mA, muaj qhov txaus ntshai ntawm kev tawg. Xws li thaum lub tshuab hluav taws xob kuaj pom cov hluav taws kub hnyiab thiab tawg tau xws li carbon monoxide thiab hydrogen, yuav tsum tau them nyiaj rau kev tiv thaiv tawg.
Thaum kawg, Thaum xa cov teeb liab, xav txog tias muaj kev tawm tsam ntawm cov hlau. Yog tias siv hluav taws xob xa hluav taws xob, qee qhov hluav taws xob poob yuav raug tsim tawm ntawm cov hlau, thiab cov teeb liab ntawm qhov kawg tau txais yuav ua rau muaj qhov yuam kev, uas yuav ua rau qhov ntsuas tsis raug. Yog li ntawd, nyob rau hauv kev lag luam tswj systems, tam sim no teeb liab kis tau tus mob feem ntau yog siv thaum lub sij hawm ntev yog tsawg tshaj li 100 meters, thiab 0-5V voltage teeb liab kis tau tus mob yuav siv tau rau luv luv kis tau tus mob.
Hauv kev tswj hwm kev lag luam, lub transmitter yog qhov tseem ceeb, thiab txoj kev sib kis ntawm cov transmitter analog yog qhov tseem ceeb heev. Raws li koj tus kheej siv ib puag ncig, kev ntsuas ntau thiab lwm yam, xaiv cov khoom sib txuas lus analog tso zis hom kom ua tiav qhov ntsuas ntsuas thiab pab koj ua haujlwm. Peb muaj cov khoom zoo heev ntawm cov hlau tsis zoo / stainless hlau. Kub thiab av noo sensor / sojntsuam, roj tswb tawg-pov thawj vaj tsev khoom thiab kev pabcuam. Muaj ntau qhov ntau thiab tsawg rau koj xaiv, cov kev pabcuam customized kuj muaj.
Post lub sij hawm: Dec-12-2020
