Shamwari yakabvunza kana iwe unogona kushandisa mutsara wefoni kuti ubatanidze iyo POE kana kushandisa macores mana etiweki waya kuita musoro wekristaro, shamwari zhinji dzakavhiringidzika ndeye network tambo 1236 uye 4578 iyo magetsi? Takatumirawo chinyorwa chakafanana pamubvunzo uyu, nhasi tauya zvakare kuti tive nekunzwisisa kwakadzama.
1. Ndeipi chaiyo inotumira data uye inopa simba
Standard poe switches ine zviyero zviviri, 802.11af uye 802.11at, uye ese akajairwa poe switch anotsigira maviri modes:
① 1236 inotora zvese data uye magetsi ekupa;
② 1236 enda data, 4578 magetsi ekupa;
2. Ndeupi rudzi rwenzira yemagetsi inoshandiswa chaizvo
Ndeipi magetsi emagetsi anoshandiswa chaizvo zvinoenderana neiyoPOE chinja, izvo zvese zvinoenderana nemakamera edu anogonesa POE. Mudetembi achaitonga nemamiriro ezvinhu.
Nekuda kwe1,2,3, uye 6 macores mana anoshandiswa ne100 megabytes yekutaurirana, gigabit megabytes yekutaurirana inoshandisa ese 8 cores. saka:
1. Kune 100 trillion PoE switch: chete 1,2,3,6 wire core yakabatana, zvose data uye magetsi; hongu, kana iwe uchida 1236 data, 4578 magetsi, ipapo 8 cores waya, uye simbisa 8 cores ese akabatana.
2. Kushandura kweGigabit PoE: kuderedzwa nekudiwa kwekutumira data, zvisinei nenzira iyo, zvose 8-core network waya dzinoda kunyatsobatanidzwa.
3. Ndedzipi nzira mbiri dzekuti aPOE chinja
IEEE802.3af simba rekupa simba ndeye 15.4W, kana simba rekhamera riri 10W, 802.af magetsi ekugadzirisa magetsi anogona kushandiswa;
IEEE802.3at simba rekupa simba ndeye 30W, kana simba rekhamera riri 20W, 802.3at POE switch inofanira kushandiswa;
802.3at inodzika pasi inoenderana, saka 802.3af-enabled makamera anogona kufambiswa ne802.3af kana pakuchinja;
802.3at-enabled makamera anongofambiswa ne802.3at switch;
Kune mamwe emhando yepamusoro-yemberi-yekupedzisira michina, senge bhora muchina, iyo inobuda simba haigone kusangana nezvinodiwa, haigone kuve P iyo POE switch.
Semuenzaniso, simba remimwe michina yebhora ndeye 40W, uye simba guru reimwe chiteshi chePoE harisi kupfuura 30W, saka simba reimwe chiteshi chekushandura harigoni kusangana, saka POE module yemuchina webhora inodiwa. Ndakazviona pandakatenga.
4. Mupiro wePOE uri kure zvakadini?
Kune poe simba rekupa chinhambwe, kwave neakawanda asina kusimba azvino VIP tekinoroji boka shamwari dzichikurukura kuti poe magetsi anogona kudarika 100 metres? Dambudziko iri zvechokwadi rinokanganiswa nezvinhu zvakawanda, dzimwe shamwari dzinopfuura 100 mamita emagetsi emagetsi hazvina simba, asi mamwe mumamita makumi mapfumbamwe emagetsi emagetsi haanawo kugadzikana, izvo zvatichakurukura pamwe chete.
Iwe unofanirwa kuona iyo 200 m, 250 m, 300 m PoE magetsi emagetsi switch zvigadzirwa zvakashambadzirwa paMoments kana online. Pachave nekusahadzika: iyo network tambo yekufambisa kureba haisi 100 metres? Ndeupi mutsara unogona kushandiswa kuwana kureba kweparaganda?
Kupfuura 100 metres yekurebesa kutapurirana kunofanirwa kunge kuri kwezvikamu zvishanu, uye ndeye 8 core network waya. Panguva imwecheteyo, poe switch inofambiswa nemasero masere, uye kamera inofanirawo kufambiswa ne8 maseru. Chinhu chakakosha ndechekuti PoE switch yemidziyo inotsigira network yekuwedzera modhi. Mushure mekubatidza, kana uchishandisa iyo data yekufambisa uye pamusoro petiweki tambo, kureba kwemagetsi echiteshi chinoenderana chinogona kusvika kupfuura 100 metres. Kune yakajairwa detembo switch, isu tinokurudzira kuti inonyanya kukodzera mukati me100 metres.
Sei zvichikurudzirwa kuishandisa mukati me100 metres?
Ngatitarisei kushorwa kweakasiyana network waya.
Kupokana kwemamita zana emhando dzakasiyana dzemhando dzakamonyoroka waya:
1. Copper-clad steel network wire: 75-100 Ω
2. Copper-clad aluminium mesh wire: 24-28 Ω
3. Copper package sirivha network cable: 15 Ω
4. Copper-coated copper network cable: 42 Ω
5. Anaerobic copper mesh waya: 9.5 Ω
Iyo ipfupi chinhambwe, iyo diki yekupikisa, uko anaerobic mhangura network wire kuramba ndiyo idiki, saka shandisa iyo kupa iyo yakagadzikana, 100 metres kureba kwemakiromita chete 9.5 Ω, ko kana kushandiswa kuri 50 metres? Ipapo kuramba kwayo i9.5 Ω hafu, idiki iyo poe simba rekupa kurasikirwa (kurasikirwa kwesimba fomula, Q=I²Rt, kurasikirwa kwesimba kuri kuenzana nekupokana), ipapo iyo yakanyanya kugadzikana magetsi. Saka anopfuura 100 metres echinhambwe chekufambisa, ita shuwa kushandisa yakanaka network tambo.
Nguva yekutumira: Nov-02-2022