M'nkhaniyi tidakambirana za masiwichi atsopano a Zyxel opangidwa kuti amange makina owonera makanema ndi magawo ena a IT zomangamanga pogwiritsa ntchito mphamvu kudzera pa PoE.
Komabe, kungogula chosinthira chabwino ndikulumikiza zida zoyenera sizinthu zonse. Chinthu chochititsa chidwi kwambiri chikhoza kuwoneka mtsogolo pang'ono, pamene famu iyi iyenera kutumikiridwa. Nthawi zina pali misampha yachilendo, kukhalapo komwe muyenera kudziwa.
Mkuwa wopotoka awiri
M'malo osiyanasiyana odziwa kugwiritsa ntchito PoE, mutha kupeza mawu ngati "Gwiritsani ntchito zingwe zamkuwa zokha." Kapena "Osagwiritsa ntchito CCA yopotoka". Kodi machenjezo amenewa akutanthauza chiyani?
Pali malingaliro olakwika odziwika bwino akuti waya wopotoka nthawi zonse amapangidwa kuchokera ku waya wamkuwa. Zimakhala osati nthawi zonse. Nthawi zina, pofuna kusunga ndalama, wopanga amagwiritsa ntchito chingwe chotchedwa copper-plated cable.
Ndi chingwe cha aluminiyamu chomwe ma conductor ake amakutidwa ndi mkuwa wochepa thupi. Dzina lonse: awiri opotoka opangidwa ndi mkuwa
Makonda opindika amkuwa amalembedwa kuti "Cu" (kuchokera ku Latin "cuprum"
Aluminiyamu yokhala ndi mkuwa imatchedwa "CCA" (Copper Coated Aluminium).
Opanga CCA sangatchule konse. Nthawi zina ngakhale opanga osakhulupirika amajambula chizindikiro cha "Cu" pazitsulo zopotoka zopangidwa ndi aluminiyamu yamkuwa.
Zindikirani. Malinga ndi GOST, kuyika chizindikiro koteroko sikofunikira.
Mtsutso wokhawo wosatsutsika wokomera chingwe chovala zamkuwa ndi mtengo wake wotsika.
Mtsutso wina wocheperako ndi wocheperako. Amakhulupirira kuti ma spools a aluminiyamu amatha kuyenda mosavuta panthawi yoyika chifukwa mphamvu yokoka ya aluminiyumu ndi yochepa kuposa yamkuwa.
Zindikirani. M'zochita, sikuti zonse ndizosavuta. Kulemera kwa paketi, kulemera kwa zotsekera, kupezeka kwa njira zopangira makina, ndi zina zotero. Kubweretsa mabokosi 5-6 okhala ndi zingwe za CCA pangolo ndikuikweza pa elevator kumatenga nthawi yofanana ndi mphamvu yofanana ndi kuchuluka kwa mabokosi okhala ndi "mkuwa wathunthu".
Momwe mungadziwire molondola chingwe cha aluminiyamu
Aluminiyamu yovala zamkuwa sizovuta kuzindikira nthawi zonse. Malangizo monga: "Kala pamwamba pa waya kapena yerekezerani kulemera kwa koyilo ya chingwe poikweza m'manja mwako" - amagwira ntchito mocheperapo.
Mayeso ofikiridwa kwambiri komanso ofulumira kwambiri: ikani malekezero ochotsedwa a waya pamoto, mwachitsanzo, ndi chowunikira. Aluminiyamu imayamba kuyaka ndikusweka mwachangu, pomwe malekezero a kondakitala wamkuwa amatha kukhala ofiira, koma amakhalabe ndi mawonekedwe ake ndipo, atakhazikika, amabweretsanso zinthu zakuthupi, mwachitsanzo, kukhazikika.
Fumbi lomwe latsala pakuyatsa aluminiyamu yopangidwa ndi mkuwa ndiloti chingwe "chachuma" chotere chimasandulika pakapita nthawi. Nkhani zonse zowopsa za sysadmin za "zingwe zakugwa" zimangokhala "mkuwa."
Zindikirani. Mukhoza kuvula waya wa insulation ndi kuyeza, kuwerengera mphamvu yokoka yeniyeni. Koma pochita njirayi sagwiritsidwa ntchito kawirikawiri. Mufunika masikelo olondola oikidwa pamalo opingasa, ophwanyika, komanso nthawi yaulere kuti muchite izi.
Table 1. Kuyerekeza mphamvu yokoka yeniyeni yamkuwa ndi aluminiyamu.
Anzathu ochokera ku NeoNate, omwe amapanga chingwe chabwino kwambiri, adapanga izi kuti ndikuthandizeni.
Kutaya mphamvu panthawi yopatsirana
Tiyerekezere resistivity:
-
resistivity yamkuwa - 0 ohm * mm0175 / m;
-
Aluminiyamu resistivity - 0 ohm * mm0294/m/
Kukana kwathunthu kwa chingwe chotere kumawerengedwa ndi formula:
Poganizira kuti makulidwe a zokutira zamkuwa pa chingwe chotsika mtengo chamkuwa "chimakonda zero," timapeza kukana kwakukulu chifukwa cha aluminiyumu.
Nanga bwanji khungu?
Zotsatira za khungu zimatchulidwa kuchokera ku liwu lachingerezi khungu. "chikopa".
Potumiza chizindikiro chapamwamba kwambiri, zotsatira zimawonedwa momwe chizindikiro chamagetsi chimaperekedwa makamaka pamtunda wa chingwe. Chochitikachi chimakhala ngati mkangano womwe opanga zingwe zopota zotchipa zotsika mtengo amayesa kulungamitsa ndalamazo pogwiritsa ntchito aluminiyamu yokutidwa ndi mkuwa, ponena kuti, "magetsiwa adzayendabe pamtunda."
Ndipotu khungu zotsatira ndi m'malo zovuta thupi ndondomeko. Kunena kuti mumtundu uliwonse wopindika wa mkuwa wopindika wopindika nthawi zonse umayenda pamtunda wamkuwa, popanda "kulanda" wosanjikiza wa aluminiyamu, sichowonadi.
Mwachidule, popanda kukhala ndi kafukufuku wa labotale pamtundu uwu wa waya, ndizosatheka kunena motsimikiza kuti chingwe cha CCA ichi, chifukwa cha mawonekedwe a khungu, sichimatumiza mikhalidwe yoyipa kuposa chingwe chamkuwa chapamwamba.
Mphamvu zochepa
Waya wa aluminiyamu amathyoka mosavuta komanso mwachangu kuposa waya wamkuwa womwewo. Komabe, βutenge ndi kuswaβ si vuto lalikulu. Vuto lalikulu kwambiri ndi ma microcracks mu chingwe, omwe amawonjezera kukana ndipo amatha kupangitsa kuti ma siginecha akuyandama achepetse. Mwachitsanzo, pamene chingwe chikhoza kupindika kapena kutentha kumakhudza nthawi ndi nthawi. Aluminiyamu ndiyofunikira kwambiri pamtundu wamtunduwu.
Kufunika kwa kusintha kwa kutentha
Matupi onse anyama amatha kusintha voliyumu pansi pa chikoka
kutentha. Ndi ma coefficients osiyanasiyana okulitsa, zitsulo izi zidzasintha mosiyana.
Izi zitha kukhudza kukhulupirika kwa plating yamkuwa komanso
khalidwe la kukhudzana pa mphambano ya ma conductor aluminiyamu ndi zipangizo
zomangira Kuthekera kwa aluminiyumu kukulitsa kwambiri kutentha kumawonjezeka
amalimbikitsa maonekedwe a microcracks omwe amawononga magetsi
makhalidwe ndi kuchepetsa mphamvu ya chingwe.
Kuthekera kwa aluminiyumu kutulutsa okosijeni mwachangu
Kuphatikiza pa kukulitsa matenthedwe, muyenera kuganizira za aluminium kuti mukhale oxidize mwachangu, monga zikuwonetseredwa ndi mayeso opepuka.
Koma ngakhale waya aluminiyamu si poyera lotseguka malawi ndi kunja mkulu-kutentha heaters, m'kupita kwa nthawi, chifukwa cha kusintha kwa kutentha kapena kutentha chifukwa cha kulanda magetsi magetsi zipangizo mphamvu (PoE), maatomu zitsulo zambiri kukhudzana ndi mpweya. . Izi sizimawongolera mphamvu zamagetsi za chingwe konse.
Kulumikizana kwa aluminiyumu ndi zitsulo zina zopanda chitsulo
Aluminiyamu osavomerezeka kuti chilumikizidwe ndi ma conductor opangidwa ndi zitsulo zina zopanda chitsulo, makamaka mkuwa ndi mkuwa wokhala ndi aloyi. Chifukwa chake ndi kuchuluka kwa okosijeni wa aluminiyamu pamalumikizidwe.
Pakapita nthawi, zolumikizira ziyenera kusinthidwa, ndipo ma conductor omwe ali pagawo lachigamba ayenera kukonzedwanso. Ndizosasangalatsa kuti zolakwika zoyandama zitha kulumikizidwa ndi izi.
Mavuto ndi PoE pawiri zopotoka zomangika zamkuwa
Pankhani ya PoE, magetsi opangira magetsi amaperekedwa pang'onopang'ono kupyolera mu zokutira zamkuwa, koma makamaka kupyolera mu kudzazidwa kwa aluminiyamu, ndiko kuti, ndi kukana kwakukulu ndipo, motero, ndi kutayika kwakukulu kwa mphamvu.
Kuonjezera apo, pali mavuto ena: chifukwa cha kutentha kwa mawaya potumiza mphamvu zamakono, zomwe awiri opotokawa sanapangidwe; chifukwa cha microcracks, waya oxidation, ndi zina zotero.
Zoyenera kuchita ngati SCS yokhala ndi chingwe chopangidwa ndi aluminiyamu yamkuwa "idatengera cholowa"?
Muyenera kukumbukira kuti zigawo zina ziyenera kusinthidwa pakapita nthawi (pazifukwa zina). Ndi bwino kusunga ndalama nthawi yomweyo mu bajeti ya nkhaniyi. (Ndikumvetsa kuti zikumveka ngati zopeka za sayansi, koma ndi chiyani chinanso chomwe mungachite?)
Yang'anirani mkhalidwe wa SCS. Yang'anirani kutentha, chinyezi ndi zizindikiro zina zakuthupi m'zipinda ndi malo ena omwe zingwe zopotoka zimadutsa. Ngati kuli kotentha, kozizira, konyowa, kapena pali kukayikira kwa makina opanikizika, monga kugwedezeka, ndi bwino kulingalira njira zodzitetezera. M'malo mwake, mukakhala ndi zikhalidwe zamkuwa zopotoka, kuwongolera koteroko sikudzapwetekanso, koma mawaya a aluminiyamu amakhala osagwirizana kwambiri ndi izi.
Pali lingaliro lakuti palibenso chifukwa chogulira mapepala abwino kwambiri, ma soketi a netiweki, zingwe zolumikizira ogwiritsa ntchito ndi zida zina. Popeza gawo la mawaya ndi, tiyeni tinene, "osati kasupe," kugwiritsa ntchito ndalama pa "chida cha thupi" chozizira sikungakhale koyenera.
Komano, ngati m'kupita kwa nthawi mukufunabe m'malo chodabwitsa chotere "osasiyana" awiri opotoka CCA ndi nthawi anayesedwa "mkuwa" - kodi ndi bwino kutsatira "sitepe imodzi patsogolo, masitepe awiri kumbuyo" mfundo, kugula chigamba mapanelo ndi sockets tsopano?pa mtengo wamba?
Muyeneranso kusamala kwambiri za kutaya mwadzidzidzi kulankhulana. Pamene panalibe ngakhale kulira kwa nthawi ndithu, ndipo pamene iwo anali kuyangβana, βzonse mozizwitsaβ zinabwezeretsedwa. Ubwino wa chingwe ndi kugwirizana ukhoza kugwira ntchito yofunika kwambiri pazochitika zoterezi.
Ngati mukufuna kugwiritsa ntchito PoE, mwachitsanzo, pamakamera owonera makanema, m'derali ndikwabwino kusinthira mkuwa wopotoka nthawi yomweyo. Kupanda kutero, mutha kukumana ndi vuto lomwe mudayikapo kamera yogwiritsa ntchito mphamvu zochepa, kenako ndikuyisintha kukhala ina ndipo muyenera kudabwa chifukwa chake sikugwira ntchito.
5E ndiyabwino, koma gulu 6 ndilabwino!
Gulu la 6 limalimbana kwambiri ndi kusokoneza komanso kutentha; ma conductor mu zingwe zotere amapindika ndi ma phula ang'onoang'ono, omwe amawongolera mawonekedwe amagetsi. Nthawi zina, paka. 6, zolekanitsa zimayikidwa kuti zilekanitse awiriawiri (kuchoka kwa wina ndi mnzake kuti apewe kukopana). Zonsezi zimawonjezera kudalirika panthawi yogwira ntchito.
Kuti mulumikizane ndi zida ndi PoE, kusintha kotereku kudzathandiza, mwachitsanzo, kuonetsetsa kuti maukonde akuyenda bwino panthawi yakusintha kwa kutentha.
Zingwe za SCS nthawi zina zimayikidwa m'zipinda zomwe sizimawongolera nyengo, mwachitsanzo, kudzera padenga, m'chipinda chapansi, ukadaulo kapena pansi, pomwe kusiyana kwa kutentha masana kumafika 25 Β° C. Kusinthasintha kotereku kumakhudza mawonekedwe a chingwe.
Kuyika chingwe chokwera mtengo, komanso chodalirika cha Gulu 6 chokhala ndi mawonekedwe abwino m'malo mwa Gulu 5E sikungowonjezera "pamutu", koma kuyika ndalama pazolumikizana bwino komanso zodalirika.
Ofesi yoyimira ku Russia ya Zyxel idachita kafukufuku wawo wokhudzana ndi kudalira mtunda wovomerezeka wa kufalitsa mphamvu kwa PoE pamtundu wa chingwe chomwe chimagwiritsidwa ntchito. Masiwichi adagwiritsidwa ntchito poyesa
Chithunzi 1. Mawonekedwe a kusintha kwa GS1350-6HP.
Chithunzi 2. Mawonekedwe a kusintha kwa GS1350-18HP.
Kuti zitheke, zotsatira zake zimafotokozedwa mwachidule patebulo, logawidwa ndi opanga makamera a kanema (onani Matebulo 2-8 pansipa).
Table 2. Njira yoyesera
Njira Yoyesera
Khwerero
Kufotokozera
1
Yambitsani kuchuluka kwa doko 1,2
-GS1300: DIP sinthani kukhala ON ndikusindikiza sinthani & Ikani batani lakutsogolo
-GS1350: Lowani pa Webusayiti GUI> Pitani ku "Port Setup"> yambitsani kuchuluka ndikuyika.
2
Lumikizani PC kapena Laputopu pa chosinthira kuti kamera ifike
3
Lumikizani chingwe cha Cat-5e 250m pa Port 1 ndikulumikiza kamera kuti muyime.
4
Gwiritsani ntchito PC/Laputopu ku PING IP kamera, sayenera kuwona kutayika kwa ping.
5
Pezani kamera ndikuwona ngati mtundu wa kanema ndi wabwino komanso wosalala.
6
Ngati sitepe#4 kapena 5 yalephera, sinthanani chingwecho kukhala Cat-6 250m ndikuyesanso kuchokera pa sitepe#3.
7
Ngati sitepe #4 kapena 5 yalephera, sinthanani chingwe kukhala Cat-5e 200m ndikuyesanso kuchokera pa sitepe #3.
Table 3. Makhalidwe ofananitsa a zingwe zolumikizira makamera a LTV
Table 4. Makhalidwe ofananiza a zingwe zolumikizira makamera a LTV (kupitilira)
Table 5. Makhalidwe ofananitsa a zingwe zolumikizira makamera a LTV (kupitilira 2).
Table 6. Makhalidwe ofananitsa a zingwe zolumikizira makamera a UNIVIEW.
Table 7. Makhalidwe ofananitsa a zingwe zolumikizira makamera a UNIVIEW (kupitilira).
Table 8. Makhalidwe ofananitsa a zingwe zolumikizira makamera a Vivotek.
Pomaliza
Mavuto omwe afotokozedwa m'nkhaniyi safunikira kugula. Mwina padzakhala munthu amene anganene kuti: "M'mapulojekiti anga nthawi zonse ndimagwiritsa ntchito chingwe chopotoka chamkuwa cha gulu la 5E ndipo sindikudziwa vuto lililonse." Zoonadi, ubwino wa kamangidwe, mikhalidwe yogwiritsira ntchito, kuyang'anitsitsa nthawi ndi nthawi komanso kukonza nthawi yake kumathandiza kwambiri. Komabe, pakufunikabe kugwiritsa ntchito PoE, ndipo pazifukwa zotere, kugwiritsa ntchito Gulu la 6 lopindika mkuwa ndi njira yodalirika kwambiri.
Ndalama zomwe zingatheke mukamagwiritsa ntchito zingwe zopindika zotsika mtengo zamkuwa ndizokhazikika. Ngati tikukamba za ma projekiti akuluakulu a Enterprise-level kwa mabizinesi ofunikira kwambiri a IT, ndikwanzeru kugwiritsa ntchito zida zamkuwa zapamwamba kuchokera kwa opanga otsimikizika, okhazikika. Ngati tikukamba za maukonde ang'onoang'ono, ndiye kuti kupulumutsa pa chingwe chopotoka, makamaka ngati "mtsogoleri akubwera", kumawoneka kokayikitsa. Nthawi zina ndi bwino kulipira kwambiri chingwe chamtengo wapatali kuti muthetse mavuto omwe angakhalepo, kusintha kudalirika, kukulitsa luso lapadera (PoE) ndi kuchepetsa mtengo wokonza.
Tikuthokoza anzathu apakampani kuti athandizidwe popanga zinthuzo.
Tikukuitanani ku zathu ndi kupitirira . Thandizo, upangiri wosankha zida ndikungolankhulana pakati pa akatswiri. Takulandirani!
Kodi mukufuna kukhala bwenzi la Zyxel? Yambani ndikulembetsa patsamba lathu .
Zotsatira
Source: www.habr.com