STS Prepayment Smart Electricity Meter
STS Prepayment Smart Electricity Meter
STS yog Standard Transfer Specification, tus qauv thoob ntiaj teb lees paub thiab muab los ntawm International Standards Institute. Nws tau tsim thawj zaug hauv South Africa. Nyob rau hauv 1997, STS Association tau tsim nyob rau hauv South Africa, thiab nyob rau hauv 2005, nws tau standardized li IEC62055 los ntawm lub International Standards Institute. Nws yog qhov tseem ceeb los muab kev siv rau kev paub txog hluav taws xob ntsuas hluav taws xob encryption, decryption thiab them nyiaj ua ntej.
STS code-hom prepaid hluav taws xob ntsuas xa tawm cov lus qhia xws li hluav taws xob yuav code (Token), encryption thiab decryption, thiab kev tswj hwm qhov tseem ceeb raws li qhov tshwj xeeb no. Lub ntsuas hluav taws xob uas txhawb nqa STS raws tu qauv muaj cov yam ntxwv ntawm tus yuam sij tshwj xeeb, cim cim cim, thiab cov ntawv pov thawj tshwj xeeb, txhawm rau kom ntseeg tau qhov tsis sib xws thiab kev nyab xeeb ntawm lub token.
STS meter muaj tag nrho cov haujlwm ntawm prepaid meter. Prepaid meter txhais tau hais tias tus neeg siv yuav hluav taws xob ua ntej thiab tom qab ntawd siv nws. Thaum tus neeg siv hluav taws xob khiav tawm, lub relay yuav cia li txiav tawm kom tus neeg siv tsis tuaj yeem siv hluav taws xob txuas ntxiv. Tom qab tus neeg siv yuav hluav taws xob tshiab, lub relay yuav cia li kaw thiab cov neeg siv txuas ntxiv siv hluav taws xob, uas daws qhov teeb meem ntawm qhov nyuaj ntawm kev them nyiaj rau lub tuam txhab hluav taws xob.
STS meters siv token los tswj hluav taws xob. Lub token yog STS (Standard Transfer Specification) ua raws 20 tus lej xa tawm thaum yuav khoom uas yuav tso tawm cov nqi hluav taws xob (hauv Kwh) ntawm STS Smart Prepaid Meter. Kev siv token tuaj yeem zam tus nqi luam ntawv thiab yuav IC daim npav. Cov neeg siv tuaj yeem tau txais cov lej xaj hluav taws xob thiab ua kom rov qab los ntawm lawv tus kheej los ntawm kev luam ntawv, ntawv xov xwm, lossis lub network.
Muaj ob hom token prepaid meters: tag nrho-hauv-ib qho thiab cais-hom. Tag nrho-nyob rau hauv-ib 'meter' yog kev koom ua ke ntawm lub token keypad thiab lub ntsuas hluav taws xob. Koj tuaj yeem tsuas yog yuav tsum tau nias lub pob khawm ntawm lub ntsuas ntsuas thiab cov cim token kom ua tiav cov haujlwm sib tham sib cuam tshuam nrog lub ntsuas. Qhov sib cais-hom meter yog lub token keypad thiab meter split. Ib lub keypad tuaj yeem txuas nrog ib lossis ntau lub ntsuas ntsuas ua ntej. Qhov no keypad (Cov neeg siv khoom interface unit) tuaj yeem ntsia tau rau sab hauv tsev lossis sab nraum zoov, thiab lub 'meter' tuaj yeem muab zais rau hauv lub thawv ncej.
