Sau: 梧桐
Raws li Bluetooth Sig, Bluetooth Version 5.4 tau tso tawm, nqa tus qauv tshiab rau cov nqi hluav taws xob. Nws tau to taub hais tias qhov hloov tshiab ntawm cov thev naus laus zis ntawm cov thev naus laus zis tuaj yeem nthuav dav mus rau 32640, lub rooj sib txuas tau paub txog kev sib txuas lus ob-txoj kev sib txuas lus nrog tus nqi nqe.
Cov xov xwm kuj ua rau tib neeg xav paub txog ob peb nqe lus nug: Dab tsi yog qhov kev ua tau zoo hauv Bluetooth? Dab tsi yog qhov cuam tshuam rau daim ntawv thov ntawm tus nqi nqi hluav taws xob? Nws puas yuav hloov cov qauv kev lag luam uas twb muaj lawm? Tom ntej no, daim ntawv no yuav tham txog cov teeb meem saum toj no, kev txhim kho yav tom ntej ntawm cov cim npe hluav taws xob.
Ib zaug ntxiv, paub txog tus nqi ntsuas hluav taws xob
Cov ntawv cim npe hluav taws xob, daim ntawv LCD thiab cov khoom siv hluav taws xob nrog kev xa thiab tau txais cov ntaub ntawv, los ntawm kev sib txuas lus tsis zoo rau cov ntaub ntawv hloov pauv. Vim tias nws tuaj yeem hloov cov nqi tsoos, txuas nrog cov hluav taws xob tsis tshua muaj hluav taws xob muaj txiaj ntsig nrog 2 xyoos kev ua kom ntev dua 5 xyoos, nws yog qhov kev nyiam ua kom ntev tshaj plaws ntawm cov khw muag khoom. Tam sim no, nws tau siv dav hauv kev lag luam Super thiab txawv teb chaws zoo li Wal-Mart, YonGhui, Mi tsev thiab lwm yam.
Thiab daim pib nqi hluav taws xob tsis yog ib qho tag, tab sis tag nrho cov kab ke tom qab nws. Feem ntau hais lus, lub tshuab hluav taws xob nqe muaj npe nrog plaub ntu: Qhov chaw nres tsheb npav hluav taws xob (ESLAP nqe Lossis Saas System (PDA).
Lub hauv paus ntsiab lus ntawm lub system yog: synchronize cov khoom lag luam thiab cov ntaub ntawv nqe ntawm Sax platform, thiab xa cov ntaub ntawv mus rau lub chaw muag hluav taws xob nqe los ntawm ESL chaw nres tsheb. Tom qab tau txais cov ntaub ntawv, tus nqi cim tuaj yeem nthuav tawm cov ntaub ntawv yooj yim ntawm cov lus xws li lub npe, nqe, keeb kwm thiab kev tshwj xeeb hauv lub sijhawm tiag tiag. Ib yam li ntawd, cov ntaub ntawv khoom kuj tseem tuaj yeem hloov pauv offline los ntawm scanning cov khoom lag luam los ntawm Handheld Terminal PDA.
Ntawm lawv, cov ntaub ntawv xa tawm ntawm cov ntaub ntawv yog nyob ntawm wireless kev sib txuas lus siv tshuab. Tam sim no, muaj peb txoj kev sib txuas lus sib txuas lus siv rau cov nqi hluav taws xob nqe: 433 MHZ, Bluetooth, thiab txhua tus ntawm peb tus kheej thiab qhov tsis zoo.
Yog li, Bluetooth yog ib qho ntawm cov qauv kev cai ntau dua, tab sis qhov tseeb, hauv khw, Bluetooth thiab ntiag tug 2.4GHz kev siv yog li tib yam. Tab sis tam sim no Bluetooth nqi daim pib tsim los tsim tus qauv tshiab, nws tsis yog qhov nyuaj rau pom, yog los ntes tus nqi hluav taws xob no cov ntawv thov no ua lag luam ntxiv.
Dab tsi tshiab nrog Bluetooth ESL tus qauv?
Tam sim no, cov kev pab cuam hluav taws xob ntawm ESL cov hauv paus chaw nres tsheb yog nyob nruab nrab ntawm 30-40 meters, thiab qhov siab tshaj plaws ntawm cov cim npe uas tuaj yeem raug muab sib txawv los ntawm 1000-5000. Tab sis raws li qhov tseeb Bluetooth core Specification version 5.4, nyob rau hauv kev txhawb nqa ntawm cov cuab yeej tshiab, ntxiv rau qhov tseeb ntawm ESL cov cuab yeej thiab rooj vag ob-txoj kev sib txuas lus.
Bluetooth 5.4 hloov kho ob tus nta ntsig txog cov nqi hluav taws xob cov khoom lag luam hluav taws xob:
1. Kev tshaj tawm xov xwm nrog cov lus teb (pawr, tej ntu kev tshaj tawm nrog teb)
Pawr yuav tso cai siv lub hnub qub network nrog ob txoj kev sib txuas lus, qhov tshwj xeeb uas ua rau cov khoom siv esl kom tau txais cov ntaub ntawv thiab teb rau tus xa. Ntxiv rau, cov khoom siv ESL tuaj yeem faib ua ntau pawg, thiab txhua txhua tus qauv ESL muaj chaw nyob kom zoo dua thiab pab rau ib-rau-ib thiab ib feem txuas ntxiv.
Hauv daim duab, AP yog lub pawr dav hlau; ESL yog tus nqi ntsuas hluav taws xob nqe (teej tug mus rau Graps sib txawv, nrog tus lej ID); subevent yog ib qho kev sib cais; RSP qhov yog lub teb. Hauv daim duab, cov kab rov tav dub yog cov lus qhia rau tus AP xa mus rau ESL, thiab kab rov qab liab yog qhov ESL kev teb thiab pub mis rov qab rau AP.
Raws li Bluetooth Core specification version 5.4, ESL siv lub cuab yeej ntaus ntawv (binary) muaj ntawm 8-ntsis pab pawg ID thiab 7-ntsis pab pawg ID. Thiab ESL ID yog qhov tshwj xeeb hauv cov pab pawg sib txawv. Yog li ntawd, tus ESL ntaus ntawv network tuaj yeem muaj txog 128 pab pawg, txhua tus tuaj yeem muaj txog li 255 cov khoom siv esl muaj rau cov tswv cuab. Hauv cov lus yooj yooj yim, tej zaum yuav muaj tag nrho ntawm 32,640 ESL cov khoom siv hauv lub network, thiab txhua daim ntawv lo tuaj yeem tswj tau los ntawm ib qho kev nkag mus.
2. Engrypted cov ntaub ntawv tshaj tawm (EAD, encrypted cov ntaub ntawv tshaj tawm)
EAD tsuas yog muab cov ntaub ntawv tshaj tawm hauv kev tshaj tawm cov ntaub ntawv encryption. Tom qab cov ntaub ntawv tshaj tawm xov xwm yog encrypted, nws tuaj yeem tau txais los ntawm ib qho khoom siv, tab sis tsuas tuaj yeem txiav txim siab thiab paub tseeb los ntawm lub cuab yeej uas tau qhia yav tas los ntawm cov ntsiab lus sib txuas lus. Qhov txiaj ntsig tseem ceeb ntawm cov yeeb yam no yog tias cov ntsiab lus ntawm cov pob ntawv tshaj tawm hloov pauv raws li cov chaw nyob hloov chaw, txo qis txoj kev hloov pauv.
Raws li cov saum toj no ob nta ntawm qhov hloov tshiab, Bluetooth yuav tau txais txiaj ntsig zoo dua hauv cov ntawv nplaum hauv hluav taws xob. Qhov tshwj xeeb tshaj yog piv nrog 433mHz thiab ntiag tug 2.4GHz, tshwj xeeb tsis tau lees paub cov qauv kev sib txuas lus zoo, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev ruaj ntseg, qhov tau txais kev txiav txim siab yuav ntau dua.
Nrog rau kev tuaj txog ntawm tus qauv tshiab, lub tshuab hluav taws xob cim npe, cov nqi hluav taws xob kuj tseem siv rau hauv cov kev hloov pauv, tshwj xeeb yog cov kws pabcuam sib txuas lus hauv nruab nrab ncav cuag ntawm txoj saw muaj. Rau cov chaw tsim khoom ntawm Bluetooth kev daws teeb meem, txawm hais tias hloov kho tshiab ntawm cov khoom muag thiab seb BLUETOOTOOL ntxiv 5.4 mus rau hauv kab khoom tshiab yog cov lus nug yuav tsum tau txiav txim siab. Thiab rau cov kws kho mob uas tsis hloov pauv, seb yuav hloov cov txheej txheem tseem ceeb los siv Bluetooth kuj yog teeb meem.
Tab sis tom qab ntawd rov qab, lub chaw ua lag luam hauv lub lag luam tsim kev lag luam niaj hnub no, thiab cov teeb meem li cas?
Lub Cim Hluav Taws Xob Kev Tsim Kho Kev Loj Hlob thiab Cov Teeb Meem
Tam sim no, los ntawm nws txoj kev lag luam sab nraud tuaj yeem paub txog, cov zaub mov xa tuaj ntawm tus nqe hluav taws xob daim npav tau ua tiav xyoo dhau-xyoo.
Raws li LOTU Ntiaj Teb Kev Tshawb Fawb Kev Lag Luam Peb lub hlis twg ua lag luam peb hlis ntuj, xyoo 190, txog 20,5% los ntawm tib lub sijhawm xyoo tas los. Hais txog cov ntawv hluav taws xob cov ntawv, cov zaub mov hauv ntiaj teb ntawm cov ntawv sau hluav taws xob hauv thawj peb zaug tau mus txog 180 lab, nrog ib xyoos kev loj hlob ntawm 28.6%.
Tab sis e-cim npe tam sim no tau khiav mus rau hauv ib lub taub ntim hauv kev nrhiav cov nqi ntxiv. Txij li thaum cov ntawv sau hluav taws xob yog cov cim los ntawm lub neej pabcuam ntev, nws yuav siv sijhawm tsawg kawg, yog li ntawd yuav tsis muaj kev hloov khoom lag luam hauv lub sijhawm ntev, yog li peb tsuas tuaj yeem saib rau kev lag luam ntau ntxiv. Qhov teeb meem, txawm li cas los xij, yog tias muaj ntau tus neeg muag khoom lag luam tsis kam hloov mus rau cov khoom cim hluav taws xob. "Qee tus neeg muag khoom tau tos txais ESL cov thev naus laus zis vim tias muaj kev txhawj xeeb txog cov phiaj xwm muag khoom-hauv, cov kws tshawb fawb ntawm cov phiaj xwm kev tshawb fawb ntawm Abi kev tshawb fawb.
Ib yam li ntawd, tus nqi kuj yog qhov teeb meem loj. Txawm hais tias tus nqi ntawm tus nqi hluav taws xob cim tau zoo heev los txo cov nqi ntau, nws tseem tsuas yog siv los ntawm cov khoom loj me xws li Walmart thiab YonGhui hauv khw muag khoom lag luam. Rau lub chaw haujlwm hauv zej zog me me, cov khw muag khoom yooj yim thiab cov khw muag khoom, nws tus nqi yog tseem muaj siab. Thiab nws muaj nqis hais tias tus nqi hluav taws xob cov cim npe tseem yog qhov yuav tsum tau ua rau cov khw tsis loj.
Ntxiv mus, cov ntawv thov tam sim no ntawm cov nqi nqe hluav taws xob muaj yooj yim. Tam sim no, 90% ntawm cov cim npe hluav taws xob yog siv nyob rau hauv lub khw muag khoom muag, tab sis tsawg dua 10% yog siv nyob rau hauv chaw ua haujlwm, kev kho mob thiab lwm yam xwm txheej. Ses-imagotag, ib qho loj heev hauv cov nqe ntawm digital, ntseeg tias cov neeg siv khoom lag luam digital ua tsis tau, tab sis yuav tsum ua cov neeg siv khoom siv thiab txuag cov tswv cuab thiab cov neeg ua haujlwm thiab tus nqi.
Txawm li cas los xij, tseem muaj xov zoo tshaj qhov nyuaj. Tus nqi nkag siab ntawm tus nqi nqe hluav taws xob cov cim npe hauv kev ua lag luam hauv tsev yog tsawg dua 10%, uas txhais tau tias tseem muaj ntau yam kev lag luam kom them. Nyob rau tib lub sijhawm, nrog kev ua kom zoo ntawm txoj cai tswjfwm tswj kev ua, kev rov qab los ntawm cov khw muag khoom muag kuj tseem tuaj, uas tseem yog lub sijhawm zoo rau cov nqi hluav taws xob mus nrhiav kev loj hlob ntawm kev ua lag luam. Ntxiv mus, ntau tus neeg hauv kev sib tw saw yog nquag tso nqe cim npe, Qualcomm thiab SES-Imagotag yog koom tes ntawm cov qauv ntsuas hluav taws xob tus nqi. Yav tom ntej, nrog rau daim ntawv thov ntawm cov thev naus laus zis thiab cov qauv ntawm cov qauv, tus nqi nqe hluav taws xob tseem muaj lub neej tshiab.
Lub Sijhawm Post: Feb-21-2023