Umhlahlandlela Wokukhetha i-CCTV DVR Enamandla Okugcina Isitoreji Amakhulu
Ukukhetha i-DVR (Digital Video Recorder) ye-CCTV akukhona nje inani leziteshi noma uhlobo. Esinye sezici ezibaluleke kakhulu umthamo wesitoreji—kungakhathaliseki ukuthi ikhamera inhle kangakanani, ukuqoshwa akusizi ngalutho uma kugcwalisa ngokushesha, kunqanyulwa, noma kungagcinwa njengoba kudingeka. Lesi sihloko sihlanganisa umhlahlandlela osebenzayo wokukhetha i-CCTV DVR enamandla amakhulu okugcina, kusukela ekubaleni izidingo zediski eyinkimbinkimbi, ukukhetha ukucindezelwa kwevidiyo, kuya ekuqinisekiseni ukuthi izici zifanele ngempela isitoreji sesikhathi eside.
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1. Qonda Isidingo: Kufanele Kugcinwe Isikhathi Esingakanani Okuqoshiwe?
Ngaphambi kokuthenga i-DVR, nquma izinga lokugcinwa kokuqoshwa kwakho (izinsuku ezingaki zokuqoshwa ofuna ukuzigcina). Indawo ngayinye inezidingo ezahlukene:
– Ekhaya: ngokuvamile izinsuku ezingu-7–14 zanele.
– Isitolo/ihhovisi elincane: izinsuku ezingu-14–30, kuye ngokuthi umsebenzi uyini kanye nengozini.
– Indlu yokugcina impahla/ifektri: izinsuku ezingama-30–90, ngezinye izikhathi isikhathi eside ngenxa yokuhlolwa kwezimali/izigameko.
– Izindawo zomphakathi/ze-ejensi: zingaba izinsuku ezingama-30–180 ngokwenqubomgomo.
Uma isikhathi eside ugcina okufiswayo, kulapho uzodinga khona umthamo wesitoreji owengeziwe—noma kuzodingeka ulungise izilungiselelo zakho zokurekhoda ukuze zisebenzise isikhala esiningi.
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2. Naka inani leziteshi kanye nokulungiswa kwekhamera.
Ama-DVR avame ukuthengiswa ngezinketho zeziteshi ezifana neziteshi ezingu-4, 8, 16, noma ezingu-32. Inani leziteshi linquma ukuthi zingaki amakhamera angaqopha. Kodwa-ke, amandla okugcina athinteka yinhlanganisela yalokhu:
– Inani lamakhamera asebenzayo
– Isixazululo (isb. 2MP, 4MP, 5MP)
– Izinga lohlaka (i-FPS)
- I-bitrate yokucindezela
- Imodi yokuqopha (amahora angama-24 noma ukutholwa kokunyakaza)
Isibonelo esilula: I-DVR yeziteshi ezingu-8 enamakhamera angu-4MP izodinga isitoreji esikhulu kakhulu kune-DVR yeziteshi ezingu-8 enamakhamera angu-2MP—ngisho noma inani lamakhamera lifana.
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3. Yazi Umehluko Phakathi kwe-DVR, i-NVR, ne-XVR (Umthelela Omkhulu Kwisitoreji)
Ngisho noma isihloko siyi-DVR, emakethe uzothola izinhlobo eziningana zama-recorder:
– I-DVR: ngokuvamile yamakhamera e-analog/analog HD (AHD/TVI/CVI).
– I-NVR: yamakhamera e-IP (edijithali) ngenethiwekhi.
– I-XVR: i-hybrid, ingamukela amafomethi ekhamera amaningana ngesikhathi esisodwa.
Ngokuphathelene nomthamo, okubalulekile akulona nje uhlobo, kodwa umkhawulo omkhulu wediski eyinkimbinkimbi engafakwa, kanye nokusekelwa kokucindezelwa kwesimanje (H.265/H.265+) okuzosindisa isikhala esikhulu sokugcina idatha.
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4. Qinisekisa Ukusekelwa Okuphezulu Komthamo We-Hard Disk
Leli yiphuzu elibalulekile uma ufuna i-CCTV DVR enamandla amakhulu: hlola incazelo "yomthamo we-HDD".
Izinto okufanele uziqaphele:
1. Inani lama-HDD bays/slot
– Ama-DVR asezingeni lokuqala ngokuvamile anesikhala esisodwa kuphela.
– Ama-DVR asezingeni eliphakathi angaba nezikhala ezingu-1–2.
– Amadivayisi angathi sína angaba nezikhala ezingu-2–4 (ezivame kakhulu kuma-NVR, kodwa kukhona nama-DVR athile).
2. Umkhawulo womthamo nge-HDD ngayinye
Amanye ama-DVR asekela kuphela i-6TB/8TB ngesikhala ngasinye, kanti amanye asekela i-10TB, i-16TB, nokuningi. Ungacabangi ukuthi wonke ama-DVR angakwazi ukusingatha ama-HDD amakhulu.
3. Umkhawulo wesamba samandla
Isibonelo, izikhala ezimbili x 10TB = isamba esingu-20TB. Lokhu kubalulekile uma udinga ukugcinwa isikhathi eside (izinsuku ezingu-30-90) noma uma unekhamera eziningi ezinekhwalithi ephezulu.
Iseluleko esiwusizo: khetha i-DVR esekela okungenani i-8TB–16TB ngesikhala ngasinye, ikakhulukazi uma ufuna ukuthuthukisa umthamo esikhathini esizayo ngaphandle kokushintsha idivayisi.
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5. Khetha Ukucindezelwa Kwevidiyo Okusebenzayo: H.265/H.265+
Ukucindezelwa kwevidiyo kuyisici esikhulu esithinta ukusetshenziswa kwesikhala. Okwamanje, izindinganiso ezivamile yilezi:
– H.264: isasetshenziswa kabanzi, kodwa ayisebenzi kahle njengesizukulwane esisha.
– H.265 (HEVC): isebenza kahle kakhulu, ingonga isitoreji esingaba ngu-30–50% ngaphansi kwezimo ezithile.
– H.265+ / Smart H.265 (igama liyahlukahluka ngohlobo): ukulungiswa okwengeziwe, ngokuvamile kusebenza kahle kakhulu uma indawo ingashintshi (isb., iphasishi, indawo yokupaka yasebusuku).
Uma umgomo wakho kuyisitoreji esikhulu, gwema ama-DVR asekela i-H.264 kuphela, ngaphandle kokuthi isabelomali sakho silinganiselwe kakhulu futhi izidingo zokugcina zifushane.
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6. Bala Izidingo Zesitoreji Ngendlela Elula
Nakuba ukubalwa okuqondile kuncike ku-bitrate, ungalinganisa:
– Uma i-resolution kanye ne-FPS ziphakeme, i-bitrate iphakeme, i-HDD igcwala ngokushesha.
– Amahora angu-24 okuqopha azothatha isikhathi esiningi kakhulu kunokuqopha ukutholwa kokunyakaza.
Indlela ewusizo:
1. Nquma imodi yokurekhoda:
– 24/7 (okuqhubekayo)
- Ukutholwa kokunyakaza
- Isimiso esixubile (isb. usuku lonke, ubusuku bokunyakaza)
2. Nquma isixazululo esingokoqobo kanye ne-FPS:
- Izidingo eziningi zokuphepha zanele ku-15 FPS.
– 20–25 FPS ibushelelezi kodwa iyachitha imali.
3. Hlola ukuthi i-DVR inikeza yini ukulawula kwe-bitrate (CBR/VBR):
– I-VBR iyonga kakhulu ngoba i-bitrate ivumelana nobunzima besithombe.
– I-bitrate ye-CBR izinzile, iyaqondakala kalula kodwa ivame ukuchitha imali kakhulu.
Uma ungabaza, sebenzisa umthetho ophephile: lungiselela umthamo ongaphezu kuka-20-30% kunalokho okulinganisiwe, ngoba izimo zangempela zivame ukuchitha imali kakhulu (isib. izindawo ezinabantu abaningi, ukunyakaza okuningi, umsindo wasebusuku).
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7. Izici Zokurekhoda Ezisiza Ukonga Amandla
Ukuze uvimbele ukuthi umthamo omkhulu "ungachithwa" ngokushesha, qiniseka ukuthi i-DVR inezici ezilandelayo:
– Ukutholwa kokunyakaza kanye nokufihla indawo: qopha kuphela uma kukhona ukunyakaza bese usetha indawo yokuthola ukuze uvimbele ama-alamu angamanga (isib. ukunyakaza kwezihlahla).
- Hlela ukurekhoda: setha izikhathi ezithile zokurekhoda isikhathi esigcwele, ezinye izikhathi zokurekhoda ukunyakaza.
– Ukurekhoda kusengaphambili kanye nokurekhoda ngemva kokunyakaza: ukurekhoda imizuzwana embalwa ngaphambi nangemva kokunyakaza, ukuze ubufakazi besigameko bungaqedwa.
– Ukucindezelwa kwe-Smart codec/AI (uma kukhona): kufaneleka ezindaweni ezimile.
– Ukubhala kabusha ngokuzenzakalela: I-DVR izobhala kabusha okuqoshiwe okudala uma sekugcwele, ukuze uhlelo luqhubeke nokusebenza ngaphandle kokuyeka ukurekhoda.
Ngezinjongo zokuphenya, ukurekhoda njalo kubaluleke kakhulu kunekhwalithi ephezulu kakhulu kodwa kugcinwa izinsuku ezimbalwa kuphela.
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8. Khetha i-Hard Disk efanele: Sebenzisa i-HDD “yokuqapha”
Iphutha elivamile ukusebenzisa i-PC HDD evamile. Ama-DVR asebenza amahora angama-24 ngosuku, izinsuku eziyi-7 ngesonto, ebhala idatha njalo, ngakho-ke kufanele ukhethe:
– I-HDD yekilasi lokuqapha (isb. i-WD Purple, i-Seagate SkyHawk, noma okulinganayo)
– Umthamo njengoba kudingeka (isib. 4TB, 8TB, 10TB, 16TB)
– Qiniseka ukuthi iyahambisana ne-DVR (hlola uhlu lwezincomo zabathengisi uma lukhona)
Ama-HDD okuqapha aklanyelwe ukulayisha okuphezulu, ukudlidliza, kanye nokusebenza okungami—okuzinzile kakhulu ekugcinweni kwesikhathi eside.
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9. Cabanga Ngokulondoloza Idatha Nokuphepha
Umthamo omkhulu akwanele njalo uma udinga ukuphepha kwedatha okuphezulu. Cabanga ngalokhu:
– Yenza isipele ku-flash disk/ngaphandle uma kwenzeka isigameko.
– Yenza isipele kunethiwekhi (NAS/FTP) uma i-DVR isekela.
– Ukufinyelela kwefu/i-P2P kokuqapha okude (hhayi njalo ngesitoreji esikhulu, kodwa kuwusizo).
– Ukuvikelwa kwe-akhawunti: amaphasiwedi aqinile, imikhawulo yomsebenzisi, kanye namalogi emisebenzi.
Uma ukuqopha kuwubufakazi obubalulekile, indlela yokusekelayo iyasiza kakhulu uma i-HDD yonakele noma i-DVR yebiwe.
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10. Ukuhlolwa Kokusebenza: Umphumela Wokusebenza, Ukudlala, kanye Nekhwalithi Yokukhipha
I-DVR enamandla amakhulu kumele futhi ikwazi ukusingatha umthwalo wedatha. Qaphela:
– Amakhono okubhala ikhodi nokudlala: angadlala emuva iziteshi eziningana ngesikhathi esisodwa ngaphandle kokungingiza.
– Ukukhishwa kwe-HDMI/VGA: isinqumo sokukhishwa esifanelana nesibonisi.
– Ukusesha okurekhodiwe okusheshayo: umugqa wesikhathi, ukusesha ngomcimbi ngamunye (ukunyakaza), kanye nokuthekelisa okulula.
– Ukuzinza kwe-Firmware: amadivayisi ahlala elenga azophazamisa ukuqoshwa.
Umthamo omkhulu uzozwakala ungelusizo uma inqubo yokusesha okuqoshiwe ihamba kancane noma ukudlala ku-stutters uma kudingeka.
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Isiphetho
Ukukhetha i-CCTV DVR enomthamo omkhulu wesitoreji akukhona nje ukuthenga i-HDD enkulu. Udinga ukuqinisekisa ukuthi i-DVR isekela umthamo ophezulu ngesikhala ngasinye, isebenzisa ukucindezela kwesimanje njenge-H.265/H.265+, ilungisa imodi yokuxazulula kanye nokurekhoda, futhi ikhetha i-HDD yokuqapha engaphatha ukusebenza okungu-24/7. Ngokuhlela okufanele—ukugcinwa kwezithombe okucacile, izidingo zokugcina ezifanele, kanye nezici zokonga umthamo ezivunyelwe—ungafinyelela uhlelo lwe-CCTV oluneziqophi ezinde nezizinzile okulula ukuzisebenzisa lapho kwenzeka isenzakalo esibalulekile.
Uma ufuna, ngingakusiza ukuthi udale ukulingisa isidingo somthamo (isib. ukuthi zingaki i-TB zamakhamera angu-8 4MP 15 FPS izinsuku ezingu-30) uma nje ucacisa inani lamakhamera, isixazululo, i-FPS, nokuthi ngabe aqoshwa amahora angu-24 ngosuku, izinsuku ezingu-7 ngesonto noma ukunyakaza.
