Esihlokweni sikhulume ngokushintsha kwe-Zyxel okusha okuklanyelwe ukwakha izinhlelo zokubhekwa kwevidiyo nezinye izingxenye zengqalasizinda ye-IT kusetshenziswa amandla nge-PoE.
Kodwa-ke, ukuthenga nje ukushintshwa okuhle nokuxhuma amadivaysi afanelekile akuyona yonke into. Into ethakazelisa kakhulu ingase ivele kamuva, lapho leli pulazi kuzodingeka lihlinzekwe. Ngezinye izikhathi kunezingibe ezingavamile, ubukhona bazo okufanele uqaphele.
Ipheya yethusi ephothiwe
Emithonjeni ehlukahlukene yolwazi ngokusetshenziswa kwe-PoE, ungathola umushwana othi “Sebenzisa izintambo zethusi kuphela.” Noma “Ungasebenzisi ipheya esontekile ye-CCA”. Zisho ukuthini lezi zixwayiso?
Kunombono oyiphutha osusungulwe kahle wokuthi ucingo olusontekile luhlala lwenziwa ngocingo lwethusi. Kuvele hhayi njalo. Kwezinye izimo, ukuze wonge imali, umenzi usebenzisa lokho okubizwa ngokuthi ikhebula le-copper-plated.
Empeleni iyikhebula le-aluminium amakhondaktha ayo ambozwe ungqimba oluncane lwethusi. Igama eligcwele: ipheya elisontiwe le-aluminium ehlanganiswe ngethusi
Ipheya elisontekile lamakhondatha ethusi eliqinile limakwe ngokuthi “Cu” (kusuka kwelesiLatini elithi “cuprum”
I-aluminium ehlanganiswe ngethusi ibizwa ngokuthi "CCA" (i-Copper Coated Aluminium).
Abakhiqizi be-CCA kungenzeka bangayilebuli nhlobo. Ngezinye izikhathi ngisho nabakhiqizi abangenangqondo badonsa ipharamitha ethi "Cu" kumbhangqwana osontekile owenziwe nge-aluminium ehlanganiswe ngethusi.
Qaphela. Ngokusho kwe-GOST, ukumaka okunjalo akudingekile.
Okuwukuphela kwengxabano engenakuphikiswa evuna ikhebula eligqoke ithusi inani layo eliphansi.
Enye impikiswano engabalulekile kakhulu isisindo esincane. Kukholakala ukuthi ama-spools ekhebula le-aluminium kulula ukuwahambisa ngesikhathi sokufakwa ngoba amandla adonsela phansi athile e-aluminium angaphansi kwethusi.
Qaphela. Ngokwenza, akuyona yonke into elula kangaka. Isisindo sephakheji, isisindo se-insulation, ukutholakala kwezindlela ezitholakalayo zokwenza imishini, nokunye okunjalo kunendima. Ukuletha amabhokisi angu-5-6 anamakhoyili ekhebula le-CCA enqoleni nokuyiphakamisa ku-lifti kuthatha cishe inani lesikhathi nomzamo ofanayo nenani lamabhokisi anamakhoyili “ethusi eliphelele.”
Ungayibona kanjani ngokunembile ikhebula le-aluminium
I-aluminium egqoke ithusi akulula ukuyibona njalo. Amathiphu afana nokuthi: “Khweba ingaphezulu lentambo noma ulinganise isisindo sekhoyili yekhebula ngokuyiphakamisa esandleni sakho” - asebenza ngokuqhathaniswa kakhulu.
Ukuhlolwa okufinyeleleka kakhulu nokushesha kakhulu: setha isiphetho esihlutshiwe sentambo emlilweni, isibonelo, ngesibani. I-Aluminium iqala ukushisa nokudilika ngokushesha okukhulu, kuyilapho isiphetho se-conductor yethusi ehlanzekile singashisa ngokubomvu, kodwa sigcine isimo saso futhi, lapho selehlile, sibuyisela izinto ezibonakalayo, isibonelo, ukunwebeka.
Uthuli olusele ekuthungeleni i-aluminiyamu ecwecwe ngethusi, empeleni, lokho ikhebula “lezomnotho” elinjalo liphenduka libe yikho ngokuhamba kwesikhathi. Zonke izindaba ezithusayo ze-sysadmin mayelana "nezintambo eziwayo" zimayelana "nethusi."
Qaphela. Ungakwazi ukuhlubula ucingo lwe-insulation bese ulukala, ubala amandla adonsela phansi athile. Kodwa ekusebenzeni le ndlela ayivamile ukusetshenziswa. Udinga izikali ezinembile ezifakwe endaweni evundlile ngokuqinile, eyisicaba, nesikhathi samahhala sokwenza lokhu.
Ithebula 1. Ukuqhathaniswa kwamandla adonsela phansi athile ethusi ne-aluminium.
Abangane bethu bakwa-NeoNate, okwenza ikhebula elihle kakhulu, benze lokhu ukukusiza.
Ukulahleka kwamandla ngesikhathi sokudlulisa
Ake siqhathanise i-resistiveivity:
-
ukumelana kwethusi - 0 ohm * mm0175 / m;
-
I-Aluminium resistivity - 0 ohm*mm0294/m/
Ukumelana okuphelele kwekhebula elinjalo kubalwa ngefomula:
Uma kucatshangelwa ukuthi ukujiya kocwecwe lwethusi kukhebula eshibhile ehlanganiswe ngethusi “kuvame ukuba ziro,” sithola ukumelana okukhulu ngenxa ye-aluminium.
Kuthiwani ngomphumela wesikhumba?
Umphumela wesikhumba uqanjwe ngegama lesiNgisi elithi isikhumba. "isikhumba".
Uma udlulisa isignali ye-high-frequency, umphumela ubonwa lapho isignali kagesi idluliswa ngokuyinhloko endaweni yekhebula. Lesi simo sisebenza njengempikiswano lapho abakhiqizi bezintambo ezisontekile ezishibhile bezama ukuthethelela ukonga ngendlela ye-aluminiyamu egqitshwe ngethusi, bethi, “umsinga usazogeleza phezulu.”
Eqinisweni, umphumela wesikhumba uyinqubo eyinkimbinkimbi yomzimba. Ukusho ukuthi kunoma iyiphi i-copper-bonded twisted signal transmission izohlale ihamba ngokuqinile eduze kwendawo yethusi, ngaphandle "kokuthumba" ungqimba lwe-aluminium, akusona isitatimende esilungile ngokuphelele.
Kalula nje, ngaphandle kokuba nesifundo selabhorethri kulolu hlobo oluthile locingo, akunakwenzeka ukusho ngokuthembekile ukuthi le ntambo ye-CCA, ngenxa yomphumela wesikhumba, idlulisela izici ezimbi kakhulu kunekhebula lethusi eliphezulu.
Amandla amancane
Intambo ye-aluminium iphuka kalula futhi ngokushesha kunocingo lwethusi olunobubanzi obufanayo. Nokho, “ukuyithatha uyiphule” akuyona inkinga enkulu. Inkathazo enkulu kakhulu ama-microcracks kukhebula, akhuphula ukumelana futhi angaholela kumphumela ontantayo wokunciphisa isignali. Isibonelo, lapho ikhebula lingaphansi kokugotshwa noma izinga lokushisa lithonya ngezikhathi ezithile. I-aluminium ibaluleke kakhulu kulolu hlobo lwethonya.
Okubalulekile ekushintsheni kwezinga lokushisa
Yonke imizimba yenyama inamandla okushintsha ivolumu ngaphansi kwethonya
izinga lokushisa. Ngama-coefficients ahlukene okunweba, lezi zinsimbi zizoshintsha ngokuhlukile.
Lokhu kungathinta kokubili ubuqotho be-copper plating kanye
ikhwalithi yokuxhumana lapho kuhlangana khona amakhondatha we-aluminium namadivayisi
ama-fastenings Amandla e-Aluminium okwanda kakhulu njengoba izinga lokushisa likhuphuka
ikhuthaza ukubukeka kwama-microcracks aphazamisa ugesi
izici futhi unciphise amandla ekhebula.
Amandla e-aluminium oksijidi ngokushesha
Ngaphezu kokwandisa okushisayo, udinga ukucabangela impahla ye-aluminium ukuze i-oxidize ngokushesha, njengoba kuboniswa ukuhlolwa okulula.
Kodwa ngisho noma ucingo lwe-aluminium lungavezwa amalangabi avulekile nama-heaters angaphandle aphezulu, ngokuhamba kwesikhathi, ngenxa yokushintsha kwezinga lokushisa noma ukushisa ngenxa yokudluliselwa kwamandla kagesi kumadivayisi kagesi (PoE), ama-athomu ensimbi amaningi ahlangana nomoya-mpilo. . Lokhu akuthuthukisi izici zikagesi zekhebula nhlobo.
Ukuthintana kwe-aluminium nezinye izinsimbi ezingenayo insimbi
I-aluminium ayinconywa ukuthi ixhunywe kuma-conductors enziwe ngezinye izinsimbi ezingenayo insimbi, ngokuyinhloko ama-alloys aqukethe ithusi nethusi. Isizathu ukwanda kwe-oxidation ye-aluminium emajoyini.
Ngokuhamba kwesikhathi, izixhumi kuzodingeka zishintshwe, futhi ama-conductor kuphaneli ye-patch kuzodingeka enziwe kabusha. Akujabulisi ukuthi amaphutha antantayo angase ahlotshaniswe nalokhu.
Izinkinga nge-PoE yebhangqa elisontiwe eliboshwe ngethusi
Endabeni ye-PoE, amandla kagesi kumadivayisi kagesi adluliselwa kancane ngokusebenzisa i-copper coating, kodwa ikakhulukazi ngokugcwaliswa kwe-aluminium, okungukuthi, ngokumelana okuphezulu futhi, ngokufanele, ngokulahlekelwa kwamandla aphezulu.
Ngaphezu kwalokho, ezinye izinkinga ziphakama: ngenxa yokushisa kwezintambo lapho udlulisela amandla wamanje, lapho lo mbhangqwana osontekile awuklanyelwe; ngenxa yama-microcracks, i-wire oxidation, njalonjalo.
Yini okufanele yenziwe uma i-SCS enentambo eyenziwe nge-aluminiyamu yethusi “yayizuzwa njengefa”?
Udinga ukukhumbula ukuthi ezinye izingxenye kuzodingeka zishintshwe ngokuhamba kwesikhathi (ngesizathu esisodwa noma esinye). Kungcono ukubeka imali ngokushesha kwisabelomali saleli cala. (Ngiyaqonda ukuthi kuzwakala njengenganekwane yesayensi, kodwa yini enye ongayenza?)
Gada isimo se-SCS. Gada izinga lokushisa, umswakama nezinye izinkomba ezibonakalayo emakamelweni nakwezinye izindawo lapho kudlula khona izintambo ezimbili ezisontekile. Uma kushisa, kubanda, kunomswakama, noma kukhona izinsolo zokucindezeleka kwemishini, njengokudlidliza, kufanelekile ukucabangela izinyathelo zokuvimbela. Empeleni, esimweni esinamapheya ethusi asontekile wendabuko, ukulawula okunjalo ngeke futhi kube buhlungu, kodwa izintambo ze-aluminium zingenangqondo kakhulu kulezi zenzakalo.
Kunombono wokuthi alisekho iphuzu ekuthengeni noma yimaphi amaphaneli amahle kakhulu, amasokhethi enethiwekhi, izintambo zokuxhuma abasebenzisi nezinye izinto zokusebenza. Njengoba ingxenye enezintambo iwukuthi, ake sithi, “hhayi umthombo,” ukuchitha imali “kwikhithi yomzimba” epholile kungase kungasafaneleki.
Ngakolunye uhlangothi, uma ngokuhamba kwesikhathi usafuna ukushintsha i-CCA emangalisayo “engekho ehlukile” “yethusi” ehlolwe isikhathi eside - ingabe kufanelekile ukulandela isimiso “sokubheka phambili, izinyathelo ezimbili emuva”, ukuthenga isichibi. amaphaneli namasokhethi manje?ngenani eliphansi?
Kudingeka futhi uqaphele kakhulu mayelana nokulahlekelwa kungazelelwe ukuxhumana. Lapho kungekho ngisho ne-ping isikhathi esithile, futhi besabheka, “konke ngokuyisimangaliso” kwabuyiselwa. Izinga lekhebula nokuxhuma kungadlala indima ebalulekile ezigamekweni ezinjalo.
Uma uhlela ukusebenzisa i-PoE, isibonelo, kumakhamera wokubhekwa kwevidiyo, kule ndawo kungcono ukushintsha ngokushesha umbhangqwana osontekile ngethusi. Kungenjalo, ungase uhlangabezane nesimo lapho uqale ngokufaka ikhamera esebenzisa amandla amancane, wabe usuyishintshela kwenye futhi kufanele uxake ukuthi kungani ingasebenzi.
I-5E yinhle, kodwa isigaba sesi-6 singcono!
Isigaba 6 simelana kakhulu nokuphazamiseka kanye namathonya okushisa; amakhondatha kuzintambo ezinjalo zisontekile ngezingqimba ezincane, okuthuthukisa izici zikagesi. Kwezinye izimo, ekati. I-6, izihlukanisi zifakwe ukuze zihlukanise amapheya (ibanga ukusuka komunye nomunye ukuze kuvinjelwe ithonya elilinganayo). Konke lokhu kwandisa ukuthembeka ngesikhathi sokusebenza.
Ukuze uxhume amadivayisi nge-PoE, izinguquko ezinjalo zizofika kahle, isibonelo, ukuqinisekisa ukusebenza okuzinzile kwenethiwekhi ngesikhathi sokushintshashintsha kwezinga lokushisa.
Izintambo ze-SCS ngezinye izikhathi zibekwe emakamelweni anokulawulwa kabi kwesimo sezulu, isibonelo, ngokusebenzisa isikhala sosilingi, endaweni engaphansi, ezobuchwepheshe noma ephansi, lapho umehluko wokushisa emini ufinyelela ku-25 ° C. Ukushintshashintsha kwezinga lokushisa okunjalo kuthinta izici zekhebula.
Ukubeka ikhebula elibiza kakhulu, kodwa futhi elithembeke kakhulu leSigaba 6 esinezici ezingcono esikhundleni seSigaba 5E akukhona ukwanda "kokuphezulu", kodwa ukutshalwa kwezimali kokuxhumana okungcono nokuthembekile.
Ihhovisi elimele i-Russian le-Zyxel lenze olwalo ucwaningo lokuncika kwebanga elivumelekile lokudluliswa kwamandla e-PoE kuhlobo lwekhebula elisetshenzisiwe. Ukushintsha kusetshenziswe ukuhlola
Umfanekiso 1. Ukubukeka kwe-switch ye-GS1350-6HP.
Umfanekiso 2. Ukubukeka kwe-switch ye-GS1350-18HP.
Ukuze kube lula, imiphumela ifingqiwe kuthebula, ihlukaniswe ngumkhiqizi wekhamera yevidiyo (bona Amathebula 2-8 ngezansi).
Ithebula 2. Inqubo yokuhlola
Inqubo Yokuhlola
Isinyathelo
Incazelo
1
Nika amandla ububanzi obunwetshiwe kumbobo 1,2
-GS1300: I-DIP shintshela ku-VULIWE bese ucindezela inkinobho yokusetha kabusha&apply kuphaneli engaphambili
-GS1350: Ngena ngemvume ku-Web GUI > Iya kokuthi "Ukusethwa Kwembobo"> vumela ububanzi obunwetshiwe futhi usebenzise.
2
Xhuma i-PC noma Ikhompuyutha ephathekayo ekushintsheni ukuze ufinyelele ikhamera
3
Xhuma ikhebula le-Cat-5e 250m ku-Port 1 bese uxhuma ikhamera ukuze ukhanyise.
4
Sebenzisa i-PC/Laptop ukuze u-PING i-IP yekhamera, akufanele ubone ukulahleka kwe-ping.
5
Finyelela kukhamera futhi uhlole ukuthi ikhwalithi yevidiyo yinhle futhi ibushelelezi.
6
Uma isinyathelo#4 noma sesi-5 sihlulekile, shintsha ikhebula uye ku-Cat-6 250m bese uphinda uhlola kusukela kusinyathelo#3.
7
Uma isinyathelo#4 noma sesi-5 sihlulekile, shintsha ikhebula uye ku-Cat-5e 200m bese uphinda uhlola kusukela kusinyathelo#3.
Ithebula 3. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera e-LTV
Ithebula 4. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera e-LTV (kuyaqhutshwa)
Ithebula 5. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera e-LTV (kuqhubeka 2).
Ithebula 6. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera e-UNIVIEW.
Ithebula 7. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera e-UNIVIEW (kuyaqhubeka).
Ithebula 8. Izici zokuqhathanisa zezintambo zokuxhuma amakhamera we-Vivotek.
isiphetho
Izinkinga ezichazwe esihlokweni azidingeki ukuze zithengwe. Mhlawumbe kuzoba nomuntu oyothi: “Emaphrojekthini ami ngihlale ngisebenzisa ikhebula elisontekile elenziwe ngethusi lesigaba 5E ngaso sonke isikhathi futhi angizazi izinkinga.” Yebo, izinga lomsebenzi, izimo zokusebenza, ukuqapha ngezikhathi ezithile kanye nokugcinwa ngesikhathi kudlala indima enkulu. Kodwa-ke, sisekhona isidingo sokusebenzisa i-PoE, futhi esimweni esinjalo, ukusebenzisa ithusi elisontekile leSigaba 6 kuyisixazululo esithembisayo.
Ukonga okungenzeka uma usebenzisa izintambo ezisontekile ze-copper-clad ezisontekile zicacile. Uma sikhuluma ngamaphrojekthi amakhulu e-Enterprise-level amabhizinisi abalulekile e-IT, kuwukuhlakanipha ukusebenzisa amapheya ethusi ekhwalithi ephezulu avela kubakhiqizi abafakazelwe, asebezinze kahle. Uma sikhuluma ngamanethiwekhi amancane, bese ulondoloza kukhebula elisontekile, ikakhulukazi ngaphansi kwezimo "zomphathi ozayo", kubonakala kunokungabaza. Ngezinye izikhathi kungcono ukukhokha ngaphezulu ikhebula lekhwalithi ukuze kuqedwe izinkinga ezingase zibe khona, ukuthuthukisa ukwethembeka, ukwandisa ububanzi bamakhono (PoE) nokunciphisa izindleko zokugcinwa.
Sibonga ozakwethu enkampanini ukuze uthole usizo ekudaleni impahla.
Sikumema wethu futhi kuqhubeke . Ukusekela, iseluleko ekukhetheni imishini kanye nokuxhumana nje phakathi kochwepheshe. Siyakwamukela!
Unentshisekelo yokuba nguzakwethu we-Zyxel? Qala ngokubhalisa kuhlelo lwethu .
Imithombo
Source: www.habr.com