Isifinyezo se-TL;DR:Izinhlelo zamakhamera okuphepha ze-CCTV zabakhi zidinga ukukhethwa ngokucophelela kwezinhlobo zamakhamera, isixazululo, izixazululo zokugcina, kanye nengqalasizinda yenethiwekhi. Izinhlelo ezisekelwe ku-IP zibusa imakethe njengoba isixazululo se-4K siba yinto ejwayelekile. Izinto ezibalulekile okufanele uzicabangele zifaka phakathi inani lamakhamera, izidingo zokufaka amakhebula, ukukhethwa kwe-NVR/VMS, kanye nokuhambisana nemithetho yokuqapha yendawo. Ukufakwa okuvamile kwezentengiselwano kuhluka kusuka ku-$500-$2,000 ngekhamera ngayinye kufaka phakathi ukufakwa.

Isingeniso: Ubuchwepheshe be-CCTV Bokuphepha Kwezentengiselwano

Ithelevishini ye-Closed-circuit (CCTV) ibhekisela ezinhlelweni zokuqapha ividiyo ezithumela amasignali kubaqaphi abathile kunokuba zisakaze emphakathini. Imakethe ye-CCTV yomhlaba wonke idlule amaRandi ayizigidigidi ezingama-55 ngo-2026, lapho amakhamera e-IP ethola isabelo semakethe esingu-78% ngokusho kwe-Ucwaningo lweMarketandMarketsAbakhiqizi kumele baqonde imininingwane yobuchwepheshe, izidingo zokufaka, kanye nokuhambisana nemithetho lapho becacisa izinhlelo zokuqapha.

Izinhlelo ze-CCTV zesimanje zinikeza okungaphezu kokuqapha ezokuphepha. Ukuhlaziya okuthuthukisiwe kuvumela abantu ukubala, ukuqashelwa kwepuleti lelayisensi, kanye nokutholwa kokungena kwemingcele. Ukuhlanganiswa nokulawula ukufinyelela kanye nezinhlelo ze-alamu kudala izinhlelo zokuphepha eziphelele.

Izinhlobo zekhamera ye-CCTV kanye nezinhlelo zokusebenza

Amakhamera e-Dome Okuqapha Kwangaphakathi

Amakhamera e-dome anesivalo esimboziwe esifihla indlela ilensi eliqondisa ngayo. Lawa makhamera afanela izindawo zokuthengisa, izindawo zokwamukela izivakashi emahhovisi, kanye nemizila yamahhotela. Ama-dome amelana nokucekelwa phansi amelana namandla okushaywa afinyelela kuma-joules angu-50. Umklamo ovalekile uvimbela ukuqongelela uthuli kanye nemizamo yokuphambuka.

Amakhamera Ezinhlamvu Zokuvikela I-Perimeter

Amakhamera ezinhlamvu anikeza ukuvimbela okubonakalayo ngezindawo zokuhlala ezingamelani nesimo sezulu zokufakwa ngaphandle. Lawa makhamera ngokuvamile anezingqimba ezinde zokugxila ukuze abuke kude. Izimbobo ezinesilinganiso se-IP67 zivikela uthuli nokucwiliswa emanzini. Izibani ze-IR ezihlanganisiwe zivumela ukubona ebusuku kufike kumamitha ayi-100 kuye ngezincazelo zemodeli.

Amakhamera e-PTZ Okuqapha Okusebenzayo

Amakhamera e-Pan-tilt-zoom anikeza ukumbozwa kwama-degree angu-360 ngamakhono okusondeza okukhanya asukela ku-20x kuya ku-40x. Abaqhubi bezokuphepha balawula ngenkuthalo ukubeka ikhamera ukuze balandelele abantu. Izici zokulandelela ngokuzenzakalela zilandela ngokuzenzakalelayo izinto ezihambayo ngaphakathi kwezindawo ezichaziwe. Amakhamera e-PTZ adinga ukufakwa nokuhlela okuyinkimbinkimbi kakhulu kunamakhamera aqinile.

Izindinganiso Zokulungiswa Kwe-CCTV Nekhwalithi Yesithombe

Izidingo Zengqalasizinda Yenethiwekhi kanye Nobubanzi Bomkhawulokudonsa

Ukushintsha kwe-PoE kanye nokulethwa kwamandla

Amandla phezu kwe-Ethernet (PoE) adlulisa idatha kanye namandla kagesi ngezintambo ze-Cat5e/Cat6 eyodwa. I-IEEE 802.3af inikeza i-15.4W nge-port ngayinye, eyanele amakhamera ajwayelekile. I-IEEE 802.3at (PoE+) inikeza i-30W yamakhamera nama-heater e-PTZ.I-IEEE 802.3bt ejwayelekileinika amandla angu-60-90W ezinhlelweni zokusebenza ezinamandla aphezulu.

Izibalo ze-bandwidth kanye nesitoreji

Izidingo ze-bandwidth zincike ekuxazululweni, izinga lozimele, kanye ne-codec yokucindezela. Ukucindezelwa kwe-H.265 kunciphisa i-bandwidth ngo-50% uma kuqhathaniswa ne-H.264. Ikhamera ye-4MP ku-15fps idinga cishe i-4-6 Mbps. Ukushintsha kwenethiwekhi kudinga amandla anele e-backplane ukuphatha ukusakazwa kwekhamera okuhlanganisiwe ngaphandle kokulahlekelwa yiphakethe.

Amasu Okugcina Nokugcina Amavidiyo

Ama-video recorder enethiwekhi (i-NVR) kanye nezinhlelo zokuphatha amavidiyo (i-VMS) zokuqapha izitolo ukuze kutholakale ubufakazi. Izikhathi zokugcina zivame ukuba phakathi kwezinsuku ezingu-30-90 kuye ngezidingo zomthetho kanye nokuhlolwa kwengozi. Isitoreji se-edge kumakhadi e-SD sinikeza isipele ngesikhathi sokungasebenzi kwenethiwekhi. Isitoreji samafu sinikeza ukuphindaphinda okukhulu kokulayisha ngaphandle kwendawo kodwa sidinga i-bandwidth enkulu yokulayisha.

Izindlela Ezinhle Zokufaka Zabakhi

Ukubekwa kwekhamera kulandela umthetho wamamitha angu-20: faka amakhamera ngaphakathi kwamamitha angu-20 ukusuka ezindaweni eziqashwe ngokucophelela ukuze kutholakale ubuso.Isihloko se-NEC 725ilawula ukufakwa kwezintambo ze-voltage eziphansi zezinhlelo zokuphepha. Izilinganiso zokugcwalisa imisele akumele zidlule u-40% ukuze kuqedwe ukushisa okufanele. Ukuvikela phansi kanye nokwenyuka kwamandla kuvimbela umonakalo wemishini ovela eziphephweni zikagesi.

imibuzo ejwayelekile ukubuzwa

Uyini umehluko phakathi kwezinhlelo ze-NVR neze-DVR?

I-NVR (Network Video Recorder) icubungula ukusakazwa kwekhamera ye-IP yedijithali ngokuxhumeka kwenethiwekhi. I-DVR (Digital Video Recorder) iguqula amasignali ekhamera ye-analog abe yifomethi yedijithali. Izinhlelo ze-NVR zinikeza amakhono aphezulu okuxazululwa, ukusabalala okulula, kanye nezinzuzo zokufinyelela kude. Ukufakwa kwesimanje kusebenzisa kakhulu ubuchwepheshe be-NVR.

Ingakanani indawo yokugcina izinto edingekayo kumasistimu e-CCTV?

Izidingo zesitoreji zibalwa kusetshenziswa ifomula: Inani Lekhamera × I-Bitrate × Amahora Okurekhoda × Izinsuku Zokugcina. Ukuqoshwa kwekhamera engu-4MP okuqhubekayo ku-4Mbps kudinga cishe u-42GB ngosuku. Ukugcinwa kwezinsuku ezingamashumi amathathu kwamakhamera angu-16 kudinga umthamo wesitoreji esingu-20TB. Ukuqoshwa okusekelwe ekunyakazeni kunciphisa izidingo zesitoreji ngo-40-60%.

Yikuphi ukufakwa kwezintambo okunconywayo ekufakweni kwekhamera ye-IP?

Ikhebula le-Cat5e lisekela ukugijima kwekhamera kufika kumamitha ayi-100 ku-100Mbps. Ikhebula le-Cat6 livumela ukuxhumana kwe-1Gbps kwamakhamera anama-sensor amaningi kanye ne-4K. Ukufakwa kwangaphandle kudinga ikhebula elilinganiswe nge-UV noma elingcwatshwe ngqo elinezivikelo ezifanele.Izinga le-TIA-568icacisa izidingo zekhebula ezihlelekile zokufakwa kwezentengiselwano.

Ingabe amakhamera e-CCTV asebenza ngaphandle kokuxhumeka kwe-inthanethi?

Izinhlelo ze-NVR zendawo zisebenza ngokuzimela ngaphandle kokufinyelela i-inthanethi. Ukuxhumeka kwe-inthanethi kwenza ukubuka kude, izaziso zeselula, kanye nemisebenzi yokusekelayo yamafu. Izinhlelo ezizimele ziyaqhubeka nokurekhoda ngesikhathi sokungasebenzi kwe-inthanethi. Ukuqapha ngaphandle kwesayithi kanye nezaziso ezisheshayo kudinga ukuxhumana kwenethiwekhi.

Yiziphi izimo zokukhanya ezithinta ukusebenza kwekhamera?

Izincazelo zokukhanya okuncane zibonisa amazinga okukhanya adingekayo ezithombeni ezisebenzisekayo. Amakhamera ombala ngokuvamile adinga i-0.1-0.5 lux ukuze asebenze ebusuku. Ama-inflammators e-IR ahlinzeka ngokukhanya okungabonakali kwe-infrared kokubona ebusuku okunombala owodwa. Ubuchwepheshe be-Wide dynamic range (WDR) buphatha izimo zokukhanya kwangemuva eziyinselele. Amakhamera okukhanya kwezinkanyezi afinyelela izithombe zombala ebumnyameni obucishe bube buphelele (0.001 lux).

Isiphetho: Ukucacisa Izinhlelo ze-CCTV Ezisebenzayo

Ukucaciswa kwesistimu ye-CCTV kudinga ukuqonda ubuchwepheshe bekhamera, ingqalasizinda yenethiwekhi, kanye nezidingo zokugcina. Izinhlelo ezisekelwe ku-IP ezine-resolution engu-4MP noma ngaphezulu zinikeza ubufakazi bekhwalithi yobuchwepheshe bezigameko zokuphepha. Ukwakhiwa kwenethiwekhi efanele kuqinisekisa ukudluliswa kwevidiyo okuthembekile ngaphandle kwezithiyo ze-bandwidth. Abakhiqizi kumele balinganisele imikhawulo yesabelomali seklayenti nezidingo zokusebenza ngenkathi beqinisekisa ukulandelwa kwemithethonqubo yokuqapha yendawo kanye nemithetho yobumfihlo.