Indlela Yokukhetha Ikhebula Elingcono Kakhulu Lokufaka I-CCTV
Ezweni lanamuhla eliya lithuthuka, ukuphepha sekuyinto ebalulekile. Enye indlela yokugcina ukuphepha kwempahla ukufaka amakhamera e-CCTV. Amakhamera e-CCTV (Closed Circuit Television) asiza ukuqapha nokuqopha izehlakalo ezenzeka endaweni. Ukuze uhlelo lwe-CCTV lusebenze kahle, ukukhetha ikhebula elifanele kubalulekile. Lesi sihloko sizochaza ngokujulile ukuthi ungayikhetha kanjani ikhebula elifanele kakhulu lokufakwa kwe-CCTV yakho, sicabangela izici ezahlukahlukene ezibalulekile njengohlobo lwekhebula, ikhwalithi, kanye nezidingo zesistimu.
Izinhlobo Zezintambo ze-CCTV
Kunezinhlobo eziningana zezintambo ezivame ukusetshenziswa ekufakweni kwe-CCTV, ngayinye inezinzuzo zayo kanye nokungalungi kwayo. Nazi ezinye zezinhlobo ezivame kakhulu:
1. Ikhebula le-Coaxial
Ikhebula le-coaxial lingenye yezintandokazi kakhulu ezinhlelweni ze-CCTV ezivamile. Lolu hlobo lwekhebula luza ngezinhlobo ezimbili eziyinhloko: i-RG59 kanye ne-RG6.
– RG59: Le ntambo ilungele amabanga amafushane kuya kwaphakathi, cishe amamitha angu-200-300. Njengoba ine-core yethusi encane, i-RG59 iguquguquka kakhulu futhi kulula ukuyisebenzisa ezindlini noma ezakhiweni ezincane.
– RG6: Le ntambo inomgogodla wethusi omkhulu kanye nokufakwa kokushisa okujiyile, okwenza ifaneleke kakhulu ebangeni elide elingafika kumamitha angu-450. Kodwa-ke, le ntambo iqinile kune-RG59, ngakho-ke ingadinga umzamo omncane ngesikhathi sokufakwa.
2. Ikhebula Eliphendukile (Ikhebula Eliphendukile)
Izintambo ezisontekile, njengezintambo ze-Cat5e noma ze-Cat6 UTP (Unshielded Twisted Pair), zivame ukusetshenziswa kumanethiwekhi ekhompyutha kodwa zingasetshenziswa nasezinhlelweni ze-CCTV kusetshenziswa ama-video balun.
– I-Cat5e: Le khebula iyakwazi ukudlulisa idatha efinyelela ku-100Mbps futhi ifanelekela amabanga afinyelela kumamitha ayi-100.
– I-Cat6: Le khebula inikeza isivinini esiphezulu, kufika ku-1Gbps, futhi ingasetshenziswa futhi ebangeni elingamamitha ayi-100 kodwa ngekhwalithi yesiginali engcono.
3. Intambo ye-Fiber Optic
Ekufakweni kwebanga elide (ngaphezu kwamamitha angu-500), ikhebula le-fiber optic liyisinqumo esifanele. Le khebula isebenzisa imicu yengilazi noma yepulasitiki ukudlulisa izimpawu zokukhanya, ezinganikeza ukucaca okungcono nokuzinza kunezintambo zethusi. Nakuba ibiza kakhulu futhi iyinkimbinkimbi kakhulu ukuyifaka, ikhebula le-fiber optic lilungele izinhlelo ezinkulu ze-CCTV njengezikhumulo zezindiza, izinkundla zemidlalo, noma izindawo zezimboni.
Ikhwalithi Yekhebula
Ikhwalithi yekhebula inquma kakhulu ukusebenza kohlelo lwakho lwe-CCTV. Ezinye izici okufanele uzicabangele lapho uhlola ikhwalithi yekhebula yilezi:
1. Izinto Zomqhubi
Amakhebula anezikhombisi zethusi elihlanzekile ngokuvamile anikeza ukusebenza okungcono kunezintambo ezenziwe nge-aluminium alloys noma i-cladding. Ithusi elihlanzekile linomoya ophakeme, okuholela ekudlulisweni kwedatha okuzinzile kanye nokuphazamiseka okuncane.
2. Isendlalelo Sokuvimbela Ukushisa
Ukuvikela okuhle kuvikela izintambo ekuphazamisekeni kwangaphandle kanye nomonakalo ongokwenyama. Khetha izintambo ezivikela ukushisa ezimelana nesimo sezulu futhi ezivimbela ilangabi uma zifakwa ngaphandle.
3. Ukuvikela
Ukuze kugwenywe ukuphazamiseka kwe-electromagnetic (EMI), izintambo ezinesendlalelo sokuvikela sensimbi (isivikelo) ziyathandwa. Lolu sendlalelo lusiza ekugcineni ikhwalithi yesignali futhi luvimbele ukuphazamiseka okuvela kwamanye amadivayisi kagesi aseduze.
Ubude bekhebula kanye nokubalwa kwebanga
Ukuqonda ibanga phakathi kwekhamera ne-DVR/NVR (Digital/Network Video Recorder) kubalulekile ekunqumeni ukuthi iyiphi ikhebula okufanele ulisebenzise. Qiniseka ukuthi ulinganisa ibanga ngokunembile bese ukhetha ikhebula elingakwazi ukuliphatha ngaphandle kokulahlekelwa okukhulu kwekhwalithi yesiginali. Isibonelo, uma ibanga lingaphezu kwamamitha ayi-100, uzoqala ukuzwa ukwehla kwekhwalithi ngekhebula le-Cat5e, ngakho-ke kungadingeka ucabangele i-Cat6, ikhebula le-coaxial elisezingeni eliphezulu, noma ngisho ne-fiber optic.
Ezinye Izinto Okufanele Uzicabangele
Ngaphandle kohlobo kanye nekhwalithi yekhebula, kunezinye izici eziningana okumele zicatshangelwe ekukhetheni ikhebula elifanele ukufakwa kwe-CCTV, okuhlanganisa:
1. Uhlobo lwekhamera kanye nobuchwepheshe
Uhlobo lwekhamera ye-CCTV oyisebenzisayo (i-analog, idijithali, i-HD, noma i-IP) lunganquma uhlobo lwekhebula olufanele kakhulu. Amakhamera e-analog avame ukukhetha izintambo ze-coaxial, kuyilapho amakhamera e-IP efaneleka kakhulu izintambo ezisontekile (i-Cat5e noma i-Cat6).
2. Indawo Yokufaka
Indawo lapho ikhebula lizofakwa khona nayo inomthelela omkhulu. Uma lifakwe ngaphandle noma endaweni enezimo zemvelo ezimbi kakhulu (ukushisa, ukubanda, umswakama), qiniseka ukuthi ukhetha ikhebula elenzelwe ngqo ukumelana nalezo zimo.
I-3. Ibhajethi
Isabelomali siphinde sithonye ukukhetha ikhebula. Nakuba izintambo zekhwalithi ephezulu, njenge-fiber optic, zinikeza izinzuzo eziningi, izindleko eziphakeme zingase zingabi njalo zifanele izidingo zephrojekthi. Kubalulekile ukuthola ibhalansi phakathi kwekhwalithi nesabelomali esitholakalayo.
4. Ukuxhumana Nokuhambisana
Futhi, cabanga ngokuhambisana kwekhebula nemishini ye-CCTV ozoyisebenzisa. Qinisekisa ukuthi izixhumi ezitholakalayo zihambisana nama-port ekhamera kanye ne-DVR/NVR. Isibonelo, izintambo ze-coaxial zivame ukudinga izixhumi ze-BNC, kuyilapho izintambo ezisontekile zisebenzisa izixhumi ze-RJ45.
Isiphetho
Ukukhetha ikhebula elifanele ukufakwa kwe-CCTV akuwona umsebenzi omncane. Kudingeka ukucatshangelwa ngokucophelela ukuqinisekisa ukuthi uhlelo lwakho lwe-CCTV lusebenza kahle futhi luhlinzeka ngokuphepha okuphezulu. Uma ukhetha ikhebula, qiniseka ukuthi ucabangela uhlobo lwekhebula kanye nekhwalithi, ibanga lokufakwa, uhlobo lwekhamera, indawo, isabelomali, kanye nokuhambisana kwedivayisi. Ngokuhlela ngokucophelela nokukhetha okufanele, ngeke wonge imali kuphela kodwa futhi uzokwandisa ukusebenza kwesistimu yakho ye-CCTV.
Khumbula ukuthi ukuphepha kuwutshalomali lwesikhathi eside, futhi ikhwalithi yekhebula iyingxenye ebalulekile yalolo tshalomali. Unganqikazi ukubonisana nochwepheshe wokufakwa kwe-CCTV noma uchwepheshe ukuze uthole izincomo ezenzelwe izidingo zakho ezithile. Ngokukhetha ikhebula elifanele, ungaqinisekisa ukuthi uhlelo lwakho lwe-CCTV lusebenza kahle futhi ngokwethembeka, lunikeza ukuphepha okudingayo.
