Buku Lotsogolera Posankha CCTV DVR Yokhala ndi Malo Osungira Ambiri
Kusankha DVR (Digital Video Recorder) ya CCTV sikuti ndi kuchuluka kwa ma channel kapena mtundu wake wokha. Chimodzi mwazinthu zofunika kwambiri ndi kuchuluka kwa malo osungira - kaya kamera ndi yabwino bwanji, zojambulira sizigwira ntchito ngati zimadzaza mwachangu, zimadulidwa, kapena sizisungidwa momwe zimafunikira. Nkhaniyi ikufotokoza malangizo othandiza posankha CCTV DVR yokhala ndi malo osungira ambiri, kuyambira kuwerengera zofunikira pa hard disk ndikusankha kukanikiza makanema mpaka kuonetsetsa kuti mawonekedwe ake ndi ofunikira kwambiri pakusungira kwa nthawi yayitali.
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1. Kumvetsetsa Kufunika: Kodi Zolembazo Ziyenera Kusungidwa Kwa Nthawi Yaitali Bwanji?
Musanagule DVR, dziwani kuchuluka kwa nyimbo zomwe mukufuna kusunga (masiku angati a nyimbo zomwe mukufuna kusunga). Malo aliwonse ali ndi zofunikira zosiyanasiyana:
– Kunyumba: nthawi zambiri masiku 7–14 ndi okwanira.
– Sitolo/ofesi yaying'ono: Masiku 14–30, kutengera ntchito ndi zoopsa zake.
– Nyumba yosungiramo katundu/fakitale: masiku 30–90, nthawi zina kupitirira apo chifukwa cha ma audit/zochitika.
– Madera a boma/mabungwe: akhoza kukhala masiku 30–180 malinga ndi mfundo.
Mukasunga nthawi yayitali, mudzakhala ndi malo ambiri osungiramo zinthu—kapena muyenera kukonza bwino makonda anu ojambulira kuti musamawononge malo ambiri.
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2. Samalani kuchuluka kwa njira ndi mawonekedwe a kamera.
Ma DVR nthawi zambiri amagulitsidwa ndi njira zosinthira ma channel monga ma channel 4, 8, 16, kapena 32. Chiwerengero cha ma channel chimatsimikizira kuchuluka kwa makamera omwe angathe kujambula. Komabe, mphamvu yosungira imakhudzidwa ndi kuphatikiza kwa:
- Chiwerengero cha makamera omwe akugwira ntchito
- Chiwonetsero (monga 2MP, 4MP, 5MP)
- Kuchuluka kwa chimango (FPS)
- Kupanikiza kwa bitrate
- Njira yojambulira (maola 24 kapena kuzindikira mayendedwe)
Chitsanzo chosavuta: DVR ya ma channel 8 yokhala ndi makamera a 4MP imafunika malo osungiramo zinthu zambiri kuposa DVR ya ma channel 8 yokhala ndi makamera a 2MP—ngakhale chiwerengero cha makamera chili chofanana.
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3. Dziwani Kusiyana Pakati pa DVR, NVR, ndi XVR (Zabwino Kwambiri pa Kusungirako)
Ngakhale kuti dzina lake ndi DVR, pamsika mupeza mitundu ingapo ya zojambulira:
– DVR: kawirikawiri ya makamera a analogi/analogi HD (AHD/TVI/CVI).
- NVR: ya makamera a IP (a digito) pa netiweki.
– XVR: wosakanizidwa, imatha kulandira mitundu ingapo ya kamera nthawi imodzi.
Ponena za mphamvu, chofunika si mtundu wokha, komanso malire apamwamba a hard disk omwe angayikidwe, komanso kuthandizira kukanikiza kwamakono (H.265/H.265+) komwe kudzasunga malo ambiri osungira.
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4. Onetsetsani kuti hard disk yanu ikugwira ntchito bwino kwambiri
Iyi ndi mfundo yofunika kwambiri ngati mukufuna CCTV DVR yokhala ndi mphamvu zambiri: onani zomwe zili mu "HDD capacity".
Zinthu zofunika kuzikumbukira:
1. Chiwerengero cha malo/malo olumikizira ma HDD
- Ma DVR apakati nthawi zambiri amakhala ndi malo amodzi okha.
- Ma DVR apakati amatha kukhala ndi mipata 1-2.
- Zipangizo zowopsa kwambiri zitha kukhala ndi mipata iwiri mpaka inayi (yofala kwambiri pa ma NVR, koma palinso ma DVR ena).
2. Malire a mphamvu pa HDD iliyonse
Ma DVR ena amangothandizira 6TB/8TB pa malo aliwonse, pomwe ena amathandizira 10TB, 16TB, ndi zina zambiri. Musaganize kuti ma DVR onse amatha kugwira ma HDD akuluakulu.
3. Malire onse a mphamvu
Mwachitsanzo, mipata iwiri x 10TB = 20TB yonse. Izi ndizofunikira ngati mukufuna kuisunga kwa nthawi yayitali (masiku 30-90) kapena kukhala ndi makamera ambiri okhala ndi mawonekedwe apamwamba.
Malangizo othandiza: sankhani DVR yomwe imathandizira osachepera 8TB–16TB pa malo aliwonse, makamaka ngati mukufuna kukweza mphamvu mtsogolo popanda kusintha chipangizocho.
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5. Sankhani Kanema Wogwira Mtima: H.265/H.265+
Kukanikiza makanema ndiye chinthu chachikulu chomwe chimakhudza kagwiritsidwe ntchito ka malo. Pakadali pano, miyezo yodziwika bwino ndi iyi:
– H.264: imagwiritsidwabe ntchito kwambiri, koma siigwira ntchito bwino ngati mbadwo watsopano.
– H.265 (HEVC): yogwira ntchito bwino, imatha kusunga malo osungira pafupifupi 30–50% pansi pa mikhalidwe ina.
– H.265+ / Smart H.265 (dzina limasiyana malinga ndi mtundu): kukonza kowonjezera, nthawi zambiri kumakhala kothandiza kwambiri ngati malowo ali osasinthasintha (monga khonde, malo oimika magalimoto usiku).
Ngati cholinga chanu ndi malo ambiri osungiramo zinthu, pewani ma DVR omwe amathandiza H.264 yokha, pokhapokha ngati bajeti yanu ndi yochepa kwambiri ndipo zosowa zanu zosungira zinthu ndi zochepa.
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6. Werengani Zofunikira Zosungiramo Zinthu Mwanjira Yosavuta
Ngakhale kuwerengera kwenikweni kumadalira bitrate, mutha kuyerekeza:
- Pamene resolution ndi FPS zili zapamwamba, bitrate imakhala yokwera, HDD imadzaza mofulumira.
- Kujambula kwa maola 24 kumatenga nthawi yambiri kuposa kujambula kozindikira mayendedwe.
Njira yothandiza:
1. Dziwani momwe mungajambulire:
– 24/7 (mosalekeza)
- Kuzindikira mayendedwe
- Ndandanda yosakanikirana (monga tsiku lonse, usiku woyenda)
2. Dziwani momwe zinthu zilili komanso momwe zinthu zilili pa FPS:
- Zosowa zambiri zachitetezo ndizokwanira pa 15 FPS.
- 20–25 FPS ndi yosalala koma yowononga ndalama zambiri.
3. Chongani ngati DVR imapereka mphamvu yowongolera bitrate (CBR/VBR):
– VBR ndi yotsika mtengo chifukwa bitrate imasintha malinga ndi zovuta za chithunzicho.
- CBR bitrate ndi yokhazikika, yodziwikiratu koma nthawi zambiri imakhala yowononga ndalama zambiri.
Ngati mukukayika, gwiritsani ntchito lamulo lotetezeka: konzani kuchuluka kwa 20–30% kuposa momwe mukuganizira, chifukwa zochitika zenizeni nthawi zambiri zimakhala zowononga kwambiri (monga malo odzaza anthu, kuyenda kwambiri, phokoso la usiku).
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7. Zinthu Zojambulira Zomwe Zimathandiza Kusunga Mphamvu
Kuti mupewe kuti mphamvu zambiri zisawonongeke mwachangu, onetsetsani kuti DVR ili ndi zinthu izi:
- Kuzindikira mayendedwe & kuphimba malo: lembani pokhapokha ngati pali mayendedwe ndipo khazikitsani malo odziwira kuti mupewe machenjezo abodza (monga kusuntha mitengo).
- Konzani nthawi yojambulira: khazikitsani nthawi zina zojambulira nthawi yonse, nthawi zina zojambulira kayendedwe.
– Kulemba pasadakhale & kulemba pambuyo pake: kulemba masekondi angapo asanayambe komanso atangomaliza, kuti umboni wa chochitikacho usadulidwe.
– Kukanikiza kwanzeru kwa codec / AI (ngati kulipo): koyenera malo osasinthasintha.
- Kulembanso zokha: DVR idzalembanso zolemba zakale ikadzaza, kotero dongosololi lipitiliza kugwira ntchito popanda kusiya kujambula.
Pazifukwa zofufuzira, kujambula nthawi zonse ndikofunikira kwambiri kuposa khalidwe lapamwamba kwambiri koma kusungidwa kwa masiku ochepa okha.
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8. Sankhani Diski Yolimba Yoyenera: Gwiritsani ntchito HDD ya “Kuyang'anira”
Cholakwika chofala kwambiri ndikugwiritsa ntchito PC HDD yachizolowezi. Ma DVR amagwira ntchito maola 24 pa tsiku, masiku 7 pa sabata, kulemba deta mosalekeza, kotero muyenera kusankha:
- HDD ya gulu loyang'anira (monga WD Purple, Seagate SkyHawk, kapena yofanana nayo)
- Kuchuluka komwe kukufunika (monga 4TB, 8TB, 10TB, 16TB)
- Onetsetsani kuti ikugwirizana ndi DVR (onani mndandanda wa malangizo a ogulitsa ngati ulipo)
Ma HDD oyang'anira amapangidwira kuti azilemba zinthu zambiri, kugwedezeka, komanso kugwira ntchito mosalekeza—okhazikika kwambiri kuti asungidwe kwa nthawi yayitali.
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9. Ganizirani za Kusunga ndi Kuteteza Deta
Kuchuluka kwa deta sikukwanira nthawi zonse ngati mukufuna chitetezo chapamwamba cha deta. Taganizirani izi:
- Koperani ku flash disk/kunja pamene vuto lachitika.
- Konzani zosunga zobwezeretsera ku netiweki (NAS/FTP) ngati DVR ikuthandizira.
– Kufikira pa mtambo/P2P kuti muyang'anire kutali (si nthawi zonse posungira zinthu zambiri, koma kothandiza).
- Chitetezo cha akaunti: mawu achinsinsi amphamvu, zoletsa za ogwiritsa ntchito, ndi zolemba za zochita.
Ngati kujambula ndi umboni wofunikira, njira yosungira zinthu ndi yothandiza kwambiri HDD ikawonongeka kapena DVR yabedwa.
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10. Kuwunika Magwiridwe Antchito: Kuchuluka kwa Magwiridwe Antchito, Kusewera, ndi Ubwino wa Magwiridwe Antchito
DVR yokhala ndi mphamvu zambiri iyeneranso kukhala yokhoza kuthana ndi kuchuluka kwa deta. Dziwani:
- Kutha kumasulira ndi kusewera: kumatha kusewera njira zingapo nthawi imodzi popanda kuchita chibwibwi.
– HDMI/VGA output: resolution output yomwe ikugwirizana ndi monitor.
- Kusaka mwachangu: nthawi, kusaka pa chochitika chilichonse (kuyenda), komanso kutumiza mosavuta.
- Kukhazikika kwa firmware: zipangizo zomwe zimapachikidwa pafupipafupi zimasokoneza kujambula.
Kuchuluka kwa mawu kudzaoneka ngati kopanda ntchito ngati njira yofufuzira yojambulira ikuyenda pang'onopang'ono kapena ngati kusewera kumayamba kugwedezeka pakafunika kutero.
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Mapeto
Kusankha CCTV DVR yokhala ndi malo osungira zinthu ambiri sikuti kungogula HDD yayikulu yokha. Muyenera kuonetsetsa kuti DVR imathandizira malo osungira zinthu ambiri, imagwiritsa ntchito njira zamakono monga H.265/H.265+, imasintha mawonekedwe ndi njira yojambulira, ndikusankha HDD yowunikira yomwe imatha kugwira ntchito maola 24 pa sabata. Mukakonzekera bwino—kusunga bwino zithunzi, zofunikira zosungira, komanso zinthu zosungira mphamvu—mutha kupeza njira ya CCTV yokhala ndi zojambulira zazitali komanso zokhazikika zomwe zimakhala zosavuta kuyendamo pakachitika chochitika chofunikira.
Ngati mukufuna, ndingakuthandizeni kupanga kuyerekezera kofunikira pa mphamvu (monga kuchuluka kwa ma TB a makamera 8 a 4MP 15 FPS kwa masiku 30) bola mutatchula kuchuluka kwa makamera, resolution, FPS, komanso ngati akujambula maola 24 kapena kuyenda.
