Labarin mun yi magana game da sababbin masu sauya Zyxel da aka tsara don gina tsarin sa ido na bidiyo da sauran sassan kayan aikin IT ta amfani da wutar lantarki ta hanyar PoE.
Koyaya, kawai siyan canji mai kyau da haɗa na'urorin da suka dace ba komai bane. Abu mafi ban sha'awa na iya bayyana kaɗan daga baya, lokacin da za a yi hidimar wannan gona. Wani lokaci akwai matsaloli na musamman, kasancewar wanda ya kamata ku sani.
Copper murɗaɗɗen biyu
A cikin hanyoyin samun bayanai daban-daban akan amfani da PoE, zaku iya samun jumla kamar "Yi amfani da igiyoyin jan ƙarfe kawai." Ko kuma "Kada ku yi amfani da nau'i-nau'i na CCA". Menene waɗannan gargaɗin suke nufi?
Akwai ingantaccen fahimta cewa murɗaɗɗen waya koyaushe ana yin ta daga wayar tagulla. Sai dai itace ba ko da yaushe. A wasu lokuta, don adana kuɗi, masana'anta suna amfani da abin da ake kira kebul na jan karfe.
Yana da ainihin kebul na aluminum wanda aka lullube shi da bakin karfe na karfe. Cikakken suna: murɗaɗɗen nau'in aluminium mai rufin tagulla
An yi wa murɗaɗɗen nau'i biyu na ƙwararrun madugu na jan ƙarfe a matsayin "Cu" (daga Latin "cuprum"
Aluminum mai rufaffiyar tagulla an keɓe “CCA” (Aluminum Copper Coated Aluminum).
Masu kera CCA na iya ƙila ba za su yi masa lakabi ba kwata-kwata. Wani lokaci har ma masana'antun da ba su da kyau suna zana ma'auni na "Cu" a kan murɗaɗɗen nau'i na aluminum da aka yi da tagulla.
Lura. Bisa ga GOST, ba a buƙatar irin wannan alamar ba.
Iyakar hujjar da ba za a iya jayayya da ita ba don goyon bayan kebul na jan ƙarfe shine ƙarancin farashinsa.
Wata hujjar da ba ta da mahimmanci ita ce ƙarancin nauyi. An yi imanin cewa spools na USB na aluminum sun fi sauƙi don motsawa yayin shigarwa saboda takamaiman nauyin aluminum bai kai na jan karfe ba.
Lura. A aikace, ba komai ba ne mai sauƙi. Nauyin marufi, nauyin insulation, samun wadatattun hanyoyin injiniyoyi, da makamantansu suna taka rawa. Kawo akwatuna 5-6 tare da coils na USB CCA a kan keken hannu da ɗaga shi a kan lif yana ɗaukar kusan adadin lokaci da ƙoƙari iri ɗaya kamar adadin akwatunan tare da coils na “cikakken jan karfe.”
Yadda ake gane kebul na aluminum daidai
Aluminum mai sanye da tagulla ba koyaushe yana da sauƙin ganewa ba. Nasihohi kamar: “Kwanke saman wayar ko kididdige nauyin igiyar igiyar ta hanyar ɗaga shi a hannunka” - suna aiki sosai.
Gwajin mafi sauƙi da sauri: saita ƙarshen wariyar da aka cire akan wuta, misali, tare da wuta. Aluminum ya fara ƙonewa da raguwa da sauri, yayin da ƙarshen madubin jan ƙarfe mai tsabta zai iya zama ja-zafi, amma yana riƙe da siffarsa kuma, lokacin da aka sanyaya, ya dawo da kaddarorin jiki, misali, elasticity.
Kurar da ta rage daga kunna aluminum-plated aluminum shine, a ka'ida, abin da irin wannan kebul na "tattalin arziki" ke juya zuwa kan lokaci. Duk labarun sysadmin masu ban tsoro game da "fadowar igiyoyi" kawai game da "jan karfe."
Lura. Kuna iya tube waya na rufi kuma ku auna shi, ƙididdige ƙayyadaddun nauyi. Amma a aikace wannan hanya ba kasafai ake amfani da ita ba. Kuna buƙatar ingantattun ma'auni waɗanda aka girka akan madaidaiciyar shimfidar wuri, lebur, da lokacin kyauta don yin wannan.
Tebur 1. Kwatanta takamaiman nauyin jan ƙarfe da aluminum.
Abokanmu daga NeoNate, wanda ta hanyar ke yin kebul mai kyau, sun yi wannan taimake ku.
Rashin wutar lantarki yayin watsawa
Bari mu kwatanta resistivity:
-
resistivity na jan karfe - 0 ohm * mm0175 / m;
-
Aluminum resistivity - 0 ohm * mm0294 / m /
Ana ƙididdige jimlar juriyar irin wannan kebul ta hanyar dabara:
Idan muka yi la'akari da cewa kauri daga cikin tagulla shafi a kan arha tagulla-plated na USB "ya karkata zuwa sifili," muna samun mafi girma juriya saboda aluminum.
Me game da tasirin fata?
Sunan tasirin fata daga kalmar Ingilishi fata. "fata".
Lokacin aika sigina mai girma, ana ganin sakamako wanda aka watsa siginar lantarki da farko tare da saman kebul. Wannan al'amari yana zama hujjar da masana'antun kebul na igiyoyi masu arha ke ƙoƙarin tabbatar da tanadi a cikin nau'in aluminum mai rufin tagulla, suna cewa, "har yanzu na yanzu zai gudana tare da saman."
A gaskiya ma, tasirin fata wani tsari ne na jiki mai rikitarwa. Don faɗin cewa a cikin kowane siginar murɗaɗɗen jan ƙarfe da aka haɗa da tagulla zai kasance koyaushe yana tafiya daidai tare da saman jan karfe, ba tare da “kama” Layer na aluminum ba, ba cikakkiyar magana ba ce.
A taƙaice, ba tare da yin binciken dakin gwaje-gwaje akan wannan nau'in waya ta musamman ba, ba zai yuwu a dogara ba a ce wannan kebul na CCA, saboda tasirin fata, yana watsa halayen da ba ya da muni fiye da na USB mai inganci mai inganci.
Ƙananan ƙarfi
Wayar Aluminum tana karya sauƙi da sauri fiye da wayar jan ƙarfe mai diamita ɗaya. Duk da haka, "ɗauka ka karya" ba shine babbar matsala ba. Mafi girman tashin hankali shine microcracks a cikin kebul, wanda ke haɓaka juriya kuma yana iya haifar da tasirin sigina mai iyo. Misali, lokacin da kebul ɗin ke ƙarƙashin lanƙwasa ko tasirin zafin jiki daga lokaci zuwa lokaci. Aluminum ya fi mahimmanci ga irin wannan tasirin.
Mahimmanci ga canjin zafin jiki
Duk jikin jiki suna da ikon canza girma a ƙarƙashin rinjayar
zafin jiki. Tare da ƙididdigar haɓaka daban-daban, waɗannan karafa za su canza daban.
Wannan na iya shafar duka mutuncin tagulla plating da
ingancin lambobin sadarwa a mahadar masu gudanarwa da na'urori na aluminum
fastenings Ƙarfin Aluminum don faɗaɗa ƙarin yayin da zafin jiki ke ƙaruwa
yana inganta bayyanar microcracks da ke lalata wutar lantarki
halaye da rage ƙarfin kebul.
Ƙarfin Aluminum don oxidize da sauri
Bugu da ƙari, haɓakar thermal, kuna buƙatar la'akari da dukiyar aluminum don oxidize da sauri, kamar yadda aka nuna ta gwajin wuta.
Amma ko da ba a fallasa wayar aluminium zuwa buɗe wuta da masu zafi na waje, bayan lokaci, saboda canjin yanayin zafi ko dumama saboda canja wurin wutar lantarki zuwa na'urorin wuta (PoE), ƙarin atom ɗin ƙarfe suna haɗuwa da oxygen. . Wannan baya inganta kayan lantarki na kebul kwata-kwata.
Tuntuɓar aluminum tare da wasu karafa marasa ƙarfe
Ba a ba da shawarar a haɗa Aluminum zuwa na'urorin da aka yi da wasu karafa da ba na ƙarfe ba, musamman jan ƙarfe da tagulla masu ɗauke da tagulla. Dalilin shine ƙara yawan iskar shaka na aluminum a gidajen abinci.
Bayan lokaci, dole ne a maye gurbin masu haɗawa, kuma masu gudanarwa a cikin facin za a sake gyara su. Yana da m cewa kurakurai masu iyo zai iya hade da wannan.
Matsaloli tare da PoE don nau'in murɗaɗɗen jan ƙarfe
A cikin yanayin PoE, ana watsa wutar lantarki zuwa na'urori masu amfani da wutar lantarki ta hanyar daɗaɗɗen jan ƙarfe, amma galibi ta hanyar cikawar aluminum, wato, tare da tsayin daka kuma, daidai da haka, tare da hasara mai yawa.
Bugu da ƙari, wasu matsalolin sun taso: saboda dumama wayoyi lokacin da ake watsa wutar lantarki, wanda ba a tsara wannan murɗaɗɗen biyu ba; saboda microcracks, waya hadawan abu da iskar shaka, da sauransu.
Me za a yi idan an gaji SCS mai kebul da aka yi da aluminium da aka yi da jan karfe?
Kuna buƙatar tuna cewa dole ne a maye gurbin wasu sassa na tsawon lokaci (saboda dalili ɗaya ko wani). Zai fi kyau a ajiye kudi nan da nan a cikin kasafin kudin don wannan harka. (Na fahimci cewa yana kama da almarar kimiyya, amma me kuma za ku iya yi?)
Kula da yanayin SCS. Kula da zafin jiki, zafi da sauran alamomin jiki a cikin ɗakuna da sauran wuraren da murɗaɗɗen igiyoyi biyu ke wucewa. Idan ya fi zafi, sanyi, zafi, ko kuma akwai tuhuma na damuwa na inji, irin su vibration, yana da daraja la'akari da matakan kariya. A ka'ida, a cikin halin da ake ciki tare da nau'i-nau'i na jan karfe na gargajiya, irin wannan iko kuma ba zai yi rauni ba, amma wayoyi na aluminum sun fi dacewa da waɗannan abubuwan mamaki.
Akwai ra'ayi cewa babu sauran fa'ida sosai a siyan kowane facin faci na musamman, kwasfa na cibiyar sadarwa, igiyoyin faci don haɗa masu amfani da sauran kayan aiki masu wucewa. Tun da ɓangaren waya shine, bari mu ce, "ba maɓuɓɓugan ruwa ba," kashe kuɗi a kan "kayan jiki" mai kyau na iya daina daraja shi.
A gefe guda, idan bayan lokaci har yanzu kuna son maye gurbin irin wannan ban mamaki "m babu bambanci" Twisted biyu CCA tare da gwajin lokaci "jan karfe" - shin yana da daraja bin ka'idar "mataki ɗaya gaba, matakai biyu baya", siyan faci. panels da sockets yanzu?a farashi mai rahusa?
Hakanan kuna buƙatar yin hankali sosai game da asarar sadarwar kwatsam. Lokacin da babu ko da ping na ɗan lokaci, kuma yayin da suke kallo, “komai cikin mu’ujiza” ya dawo. Ingancin kebul da haɗin kai na iya taka muhimmiyar rawa a cikin irin waɗannan abubuwan.
Idan kuna shirin yin amfani da PoE, alal misali, don kyamarori masu sa ido na bidiyo, don wannan yanki yana da kyau a maye gurbin su nan da nan tare da jan karfe. In ba haka ba, za ku iya fuskantar yanayin da kuka fara shigar da kyamara tare da ƙarancin wutar lantarki, sannan ku canza ta zuwa wani kuma dole ku yi mamakin dalilin da yasa ba ta aiki.
5E yana da kyau, amma nau'in 6 ya fi kyau!
Kashi na 6 ya fi juriya ga tsangwama da tasirin zafin jiki; masu gudanarwa a cikin irin waɗannan igiyoyi suna murƙushe su tare da ƙananan filaye, wanda ke inganta halayen lantarki. A wasu lokuta, a cikin cat. 6, Ana shigar da masu rarraba don raba nau'i-nau'i (nisa daga juna don hana tasirin juna). Duk wannan yana ƙara dogaro yayin aiki.
Don haɗa na'urori tare da PoE, irin waɗannan canje-canje za su zo da amfani, alal misali, don tabbatar da ingantaccen aiki na hanyar sadarwa yayin canjin yanayin zafi.
Ana ajiye igiyoyin SCS a wasu lokuta a cikin ɗakuna masu ƙarancin yanayin yanayi, misali, ta sararin samaniya, a cikin ginshiƙi, fasaha ko bene na ƙasa, inda bambancin zafin rana ya kai 25 ° C. Irin wannan canjin zafin jiki yana shafar halayen kebul.
Kwanta mafi tsada, amma kuma mafi abin dogara Category 6 na USB tare da mafi kyawun halaye maimakon Category 5E ba karuwa a cikin "sama" ba, amma zuba jari a cikin mafi kyawun sadarwa da aminci.
Ofishin wakilin Rasha na Zyxel ya gudanar da nasu binciken na dogara da nisa da aka halatta don watsa wutar lantarki na PoE akan nau'in kebul da aka yi amfani da shi. An yi amfani da maɓalli don gwaji
Hoto 1. Bayyanar canjin GS1350-6HP.
Hoto 2. Bayyanar canjin GS1350-18HP.
Don dacewa, an taƙaita sakamakon a cikin tebur, wanda kera kyamarar bidiyo ya raba (duba Tables 2-8 a ƙasa).
Teburin 2. Hanyar gwaji
Taron gwajin
Mataki
description
1
Kunna kewayo mai tsayi a tashar jiragen ruwa 1,2
-GS1300: DIP canza zuwa ON kuma latsa sake saiti & maɓalli a gaban panel
-GS1350: Shiga Yanar Gizo GUI> Je zuwa "Saitunan tashar jiragen ruwa"> ba da damar tsawaita kewayon kuma yi amfani.
2
Haɗa PC ko Laptop akan maɓalli don samun damar kyamara
3
Haɗa kebul na Cat-5e 250m akan Port 1 kuma haɗa kyamara don kunna wuta.
4
Yi amfani da PC/Laptop zuwa PING IP kamara, bai kamata ya ga asarar ping ba.
5
Shiga kamara kuma duba idan ingancin bidiyo yana da kyau da santsi.
6
Idan mataki # 4 ko 5 ya kasa, canza kebul zuwa Cat-6 250m kuma sake gwadawa daga mataki # 3
7
Idan mataki # 4 ko 5 ya kasa, canza kebul zuwa Cat-5e 200m kuma sake gwadawa daga mataki # 3
Tebur 3. Halayen kwatancen igiyoyi don haɗa kyamarori na LTV
Tebur 4. Halayen kwatancen igiyoyi don haɗa kyamarori na LTV (ci gaba)
Tebur 5. Halayen kwatankwacin igiyoyi don haɗa kyamarori na LTV (ci gaba da 2).
Tebur 6. Halayen kwatankwacin igiyoyi don haɗa kyamarori na UNIVIEW.
Tebur 7. Halayen kwatankwacin igiyoyi don haɗa kyamarori na UNIVIEW (ci gaba).
Tebur 8. Halayen kwatankwacin igiyoyi don haɗa kyamarori na Vivotek.
ƙarshe
Ba a buƙatar matsalolin da aka bayyana a cikin labarin don siye. Wataƙila za a sami mutumin da zai ce: “A cikin ayyukana koyaushe ina amfani da kebul na nau’in 5E da aka yi da jan karfe da aka yi da ƙarfe a kowane lokaci kuma ban san wata matsala ba.” Tabbas, ingancin aikin aiki, yanayin aiki, sa ido na lokaci-lokaci da kiyayewa na lokaci suna taka muhimmiyar rawa. Duk da haka, har yanzu akwai buƙatar amfani da PoE, kuma don irin wannan yanayin, ta yin amfani da nau'in nau'in nau'i na nau'i na nau'i na 6 na jan ƙarfe shine mafi kyawun bayani.
Matsakaicin tanadi lokacin amfani da arha igiyoyin igiyoyi masu murɗaɗɗen tagulla suna da takamaiman takamaiman. Idan muna magana ne game da manyan ayyuka na matakin ciniki don kasuwancin IT masu mahimmanci, yana da hikima a yi amfani da nau'i-nau'i na jan karfe masu inganci daga ingantattun masana'antun da aka tabbatar. Idan muna magana ne game da ƙananan cibiyoyin sadarwa, sa'an nan ajiyewa a kan murɗaɗɗen kebul na biyu, musamman a cikin yanayin "mai zuwa admin", yana kama da shakku. Wani lokaci yana da kyau a biya ƙarin don kebul mai inganci don kawar da matsalolin da za a iya amfani da su, inganta aminci, fadada kewayon damar (PoE) da rage farashin kulawa.
Muna godiya ga abokan aikinmu daga kamfanin don taimako wajen ƙirƙirar kayan.
Muna gayyatar ku zuwa ga namu kuma a . Taimako, shawara akan zabar kayan aiki da sadarwa kawai tsakanin masu sana'a. Barka da zuwa!
Kuna sha'awar zama abokin tarayya na Zyxel? Fara da yin rijista akan mu .
Sources
source: www.habr.com