Tam sim no, kev siv cov ntsuas dej ntse hauv cov tsev nyob yog nyob rau hauv qhov nce. Ntxiv nrog rau IC daim npav dej ntsuas, muaj cov ntsuas dej hauv thaj chaw deb, TM daim npav dej ntsuas, daim npav ntsuas dej, thiab RF daim ntawv ntsuas dej (xov tooj cua zaus ntsuas).
I. Cov chaw taws teeb kis tau tus mob dej ntsuas tau muab faib ua cov chaw taws teeb xa hluav taws xob thiab cov chaw taws teeb wireless
Wired cov chaw taws teeb kis tau tus mob paub txog kev xa dej ntawm cov ntaub ntawv ntsuas dej los ntawm cov ntsuas dej, kev sib txuas hluav taws xob sib txuas, ntau cov teeb liab sib sau ua ke, thiab cov tswj hwm hauv nruab nrab. Kev xaim hluav taws xob muaj qhov cuam tshuam rau qhov tsis xws luag ntawm xob laim sab nraud, siab thiab qis zaus teeb liab cuam tshuam ntawm cov khoom siv hluav taws xob. Ob tsev neeg tshiab thiab tsev neeg qub yuav tsum ua raws li kev tsim kho vaj tse network.
Wireless tej thaj chaw deb kis tau tus mob yog hais txog cov txheej txheem ntawm xa cov ntaub ntawv dej los ntawm tej thaj chaw deb dej meters, thiab lub meter nyeem cov neeg ua hauj lwm ntawm lub chaw tswj dej siv lub 'meter' nyeem ntaus ntawv los sau cov ntaub ntawv dej sab nraum zoov.
II. TM card ntsuas dej
Qhov tseeb, nws tseem yog IC (Integrated Circuit) daim npav, tshwj tsis yog tias daim npav IC dav dav yog daim npav tsib-kab lossis rau-kab daim npav, thiab nws yog nyob rau hauv cov txheej txheem pob, thaum daim npav TM yog daim npav ib-kab. nrog ib pob tshwj xeeb. Daim npav zoo li no yog nyob rau hauv kev sib cuag ncaj qha nrog lub cuab yeej, yog li qhov chaw nres nkoj nyeem ntawv feem ntau raug nthuav tawm, thiab nws yuav cuam tshuam los ntawm cov hluav taws xob sab nraud ntau dua li qhov bayonet ntawm daim npav IC. Yog li ntawd, txawm hais tias daim npav TM yog ib qho yooj yim rau nqa (nws tuaj yeem ua rau hauv cov duab tseem ceeb), nws txoj kev ruaj ntseg (cov ntaub ntawv kev ruaj ntseg thiab cov khoom siv kev ruaj ntseg) tseem phem dua li cov khoom ntawm IC daim npav, thiab tsis tuaj yeem sib haum nrog lub txhab nyiaj lub network platform. .
III. Mechanical card ntsuas dej
Mechanical card water meter, tseem hu ua cov lus code, yog ib yam khoom uas siv ib tug neeg kho tshuab dial card raws li lub pre-purchased dej cov ntaub ntawv cab kuj. Tus nqi them ua ntej yog encrypted thiab xam los ntawm lub computer algorithm los xam tus password. Lub khoos phis tawj ib leeg-chip decrypts thiab tau txais cov nyiaj. Vim yog kev ua haujlwm nyuaj, nws tsis tsim nyog rau kev tswj xyuas cov ntaub ntawv hauv computer thiab cov neeg siv tswj; thiab tsis muaj kev cia khoom ntawm IC daim npav dej ntsuas. IC daim npav ntsuas dej tuaj yeem sau qhov kev siv dej ntsuas dej, xws li tag nrho cov dej ntim, seb puas muaj hluav taws xob cuam tshuam, roj teeb lub zog, seb puas muaj qhov rov qab txuas, thiab lwm yam, rau hauv daim npav.
IV. IC card ntsuas dej
IC card water meter yog ib hom plug-in dej ntsuas uas tau dav siv tam sim no. Feem ntau siv daim npav S4442 (uas yog, daim npav logical encryption) kom paub txog cov ntaub ntawv sib pauv ntawm software thiab ntsuas dej. Qhov zoo yog kev ua haujlwm yooj yim, ua ntej sau nqi dej, tsis xav tau phau ntawv ntsuas ntsuas, tus nqi khoom qis, thiab kev saib xyuas yooj yim. Nws tsuas yog tias qhov kev ua haujlwm tsis zoo ntawm cov dej tsis zoo txaus, thiab lub peev xwm tsis zoo li daim npav xov tooj cua zaus, tab sis nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm lub tuam tsev tswj xyuas khoom ntawm theem no.
V. RF dej daim npav (xov tooj cua zaus daim npav)
RF dej daim npav yog ib hom IC daim npav, hu ua daim npav xov tooj cua zaus. Cov xov tooj cua tsis yog siv rau kev sib pauv ntaub ntawv, yog li kev tswj hluav taws xob ntawm lub ntsuas dej tuaj yeem siv ib leeg, thiab kev ua haujlwm tsis zoo ntawm cov dej tsis zoo. Daim npav xov tooj cua tsawg zaus (T5557) siv nyob rau theem pib tsis muaj roj teeb nws tus kheej, thiab cov khoom siv yuav tsum tsim hluav taws xob hluav taws xob ua ntej thiab muab lub zog rau daim npav xov tooj cua los ntawm induction hluav taws xob. Tsis muaj peev xwm cuam tshuam sab nraud.
