Ndi chitukuko cha zachuma ndi chitukuko cha anthu, anthu akusonkhana mowonjezereka pagulu.Panthawi imodzimodziyo, milandu yowononga chitetezo cha anthu imabweretsanso mavuto aakulu kwa anthu ogwirizana.Makamera ndi dongosolo la Surveillance lingapereke nthawi yeniyeni yowunikira mavidiyo ndi ntchito zojambulira mavidiyo, kupereka maziko ofunikira kuti asonkhanitse pambuyo pa umboni.Kukula mofulumira kwa Makamera ndi dongosolo la Surveillance limapereka njira zogwirira ntchito zomanga "mzinda wogwirizana". zithunzi zosonkhanitsira zithunzi zomwe zimagawidwa mu Makamera ndi dongosolo loyang'anira zimayenera kuperekedwa kwa seva mu nthawi yeniyeni kuti muwone, kusanthula ndi chidule.Data transmission access network ndizovuta kwambiri pomanga mizinda yowunikira ndi ma alarm network, ndi ntchito yofunikira ya Dongosolo lotumizira ma data likuchulukirachulukira.EPON, yomwe ingapereke mwayi waukulu wa bandwidth, yakhala teknoloji yofunikira yomwe ntchito yake yaikulu yamalonda imadalira.
Ndi chitukuko cha ukadaulo wolumikizirana, ukadaulo wa EPON wayambika pang'onopang'ono m'munda wowunikira chitetezo.Ndiukadaulo wofikira pa bandwidth wa point-to-multipoint network komanso passive optical fiber transmission mode.
Pakalipano, ubwino wa teknoloji ya EPON ikuwonekera pang'onopang'ono, makamaka mu Makamera ndi Kuwunika ntchito.EPON ikagwiritsidwa ntchito pamayendedwe oyang'anira maukonde, imatha kupereka kusewera kwathunthu ku zabwino zake za bandwidth yayikulu ndikuthana ndi kufalikira kwa data pamtengo wotsika mtengo, ndipo mawonekedwe ake osavuta komanso osinthika amatha kuchepetsa mtengo wonse komanso mtengo wokonza maukonde. .
Netiweki ya EPON ili ndi zabwino izi:
1.Kudalirika kwakukulu.EPON ndi splitter ndi kuwala CHIKWANGWANI.Ili ndi moyo wautali wautumiki ndipo ilibe zida zogwira ntchito.Imapewa kulephera kwa mphamvu, kugunda kwamphezi, kuwonongeka kwa overcurrent ndi overvoltage, etc. Network imakhala yodalirika kwambiri ndipo imachepetsa ndalama zosamalira.
2. mtengo wotsika.Ukadaulo wa EPON wotumizira ma fiber single-core, kupulumutsa theka la CHIKWANGWANI kuposa kufala wamba kwa CHIKWANGWANI.Kuonjezera apo, EPON sichifuna magetsi akunja panthawi yotumizira, ndi yosavuta kuyala, ndipo kwenikweni imasowa kukonza, zomwe zingapulumutse ndalama zogwirira ntchito ndi ndalama zoyendetsera.
3.High bandwidth.1Gmps symmetric transmission rate, mosavuta kukwaniritsa zofunikira za mavidiyo owonetsetsa.Bandiwifi ya ONU iliyonse imatha kusinthidwa mwamphamvu pakati pa 2M ndi 1Gmps.Wapakati bandwidth kumtunda kwa doko la OLT mu ONU iliyonse ndi pafupifupi 30M, yomwe imakwaniritsa zofunikira za IPTV.
4.EPON ili ndi ntchito yotsika mtengo ndipo liwiro la EPON likhoza kufika pamtunda womwewo wa bandwidth kumtunda ndi kumtunda kwa 1.25Gb / s. Kufalikira kwa netiweki ya Metropolitan Area, ndipo makamaka kumakhudza madera apakati.
5.Kulumikizana kumasinthasintha, ndipo chiŵerengero chapamwamba kwambiri cha kuwala ndi 1:64.Mapangidwe amtundu wamtengo wamtengowo amatengedwa kuti apange mfundo-to-multipoint user network topology pogwiritsa ntchito ma splitter osiyanasiyana.Kupyolera mukukonzekera bwino kwa maukonde ndi kapangidwe kake, fiber resources zitha kupulumutsidwa kwambiri.Ndilo njira yabwino yothetsera vuto la kusonkhanitsa zithunzi ndi kubalalitsidwa.
EPON Technology Principle
EPON (Ethernet Passive Optical Network) Netiweki ya Ethernet passive Optical idapangidwa ndi kuphatikiza koyenera kwaukadaulo wa Efaneti ndi ukadaulo wa PON.
Pofuna kulekanitsa ma siginecha pamayendedwe otumizira ndi kulandila kwa ogwiritsa ntchito angapo pamtundu womwewo, matekinoloje awiri otsatirawa ochulukitsa amatsatiridwa: kutsitsa kwa data ya downlink kumatengera ukadaulo wowulutsa, ndipo mayendedwe a data a uplink amatengera ukadaulo wa TDMA.
EPON ntchito mu Makamera ndi kuwunika
Ukadaulo wa EPON umadziwika ndi bandwidth yayikulu, kukhazikika kwapamwamba komanso kugwiritsa ntchito kwambiri zinthu zama mzere.Ukadaulowu uli ndi zabwino zake zachilengedwe pakuwunika kwa kampasi.Choyamba, kuyang'anira kampasi kumafuna malo othamanga kwambiri, apamwamba kwambiri pa intaneti kuti azitha kunyamula mavidiyo ake apamwamba kwambiri.Tekinoloje yaEPON imapereka uplink ndi downlink symmetric 1Gbps bandwidth, yomwe imatha kukwaniritsa kwathunthu Chachiwiri, EPON's flexible topological structure imayang'anira malo obalalika a pakiyo. Kaya ndi gulu lolimba la nyumba kapena msewu wocheperako, ukhoza kuikidwa ndi maukonde oyenerera. Pomaliza, chitetezo chapamwamba ndi bata. ya EPON imakwezanso ukadaulo wofikira pakuwunika kwamapaki kukhala watsopano.
Pakafunika malo owunikira kwambiri pakachulukidwe pakati pa paki, EPON imatha kugwiritsa ntchito maukonde wamba.Doko limodzi la PON la zida za OLT limalumikizidwa ndi 1: N spectrometer.Pambuyo pofika kutsogolo kutsogolo kwa optical node, zipangizo zambiri za ONU zimagwirizanitsidwa.Tengani mwayi wochuluka wa kutalika kwa mawonekedwe a fiber optical transmission, kufalikira ku zofunikira zonse zomwe ziyenera kutumizidwa m'deralo.Chingwe chotsaliracho chikhoza kusungidwa kuti chiwonjezereke.
Kuwunika kwa misewu yozungulira kungathe kuchitidwa mozungulira kuti mugwirizane ndi malo owonetsetsa misewu mu mndandanda.M'dera laling'ono lachigawo, EPON yokhala ndi kutalika kwa 20KM ikhoza kupereka mwayi.M'dera lalikulu, njira zingapo zitha kugwiritsidwa ntchito kuthetsa vuto lakutali.