Indorerwamo za CCTVubu bikoreshwa cyane, ariko kugira ngo bihuze n'imiterere runaka, hagomba gusuzumwa ibipimo byinshi bya tekiniki n'ibikenewe mu ikoreshwa nyaryo, nko gusobanura neza intego y'igenzura, intera y'igenzura, n'aho igenzura ribera.
Muri iyi nkuru, turareba mu buryo burambuye uburyo bwo guhitamo lenzi za CCTV zikwiye mu bihe bitandukanye byihariye.
Guhitamo lenzi ya CCTV ijyanye n'ikibazo runaka bisaba gusuzuma ibintu bikurikira mu buryo bwimbitse:
1.Sobanura ibisabwa mu igenzura ry'ibintu
Mbere yo guhitamo lenzi ya CCTV, ni ngombwa—nk'intambwe y'ibanze—kubanza kumenya ibisabwa mu igenzura ryihariye ry'uburyo bwo gukoresha. Ubwa mbere, ni ngombwa gusobanura imiterere y'umuntu ukurikirana n'aho byabereye.
Urugero, emeza niba intego ari ukureba ahantu hanini cyangwa utuntu duto, niba intera yo kugenzura ari ngufi cyangwa ndende, kandi niba ibidukikije byo kugenzura ari imbere cyangwa hanze, ndetse n'imiterere y'urumuri. Amaherezo, lenzi ikwiye igomba gutoranywa hashingiwe kuri ibi bisabwa mu kugenzura.
2.Ibipimo by'urufunguzo bihuye
Uburebure bw'icyerekezo, umwanya wo kubona, aho umuntu abona ibintu, n'uburyo ibintu bifatwa ni ibipimo by'ingenzi bigomba kwitabwaho:
(1) Uburebure bw'ifatizo. Uburebure bw'ifatizo ni ikintu cy'ingenzi mu kugena intera y'aho umuntu areba n'intera yo kugenzura. Uburebure butandukanye bw'ifatizo buhura n'ibintu bitandukanye byo kugenzura: uko uburebure bw'ifatizo buba bugufi, ni ko uburebure bw'aho umuntu areba buba bunini; ku rundi ruhande, uko uburebure bw'ifatizo buba burebure, ni ko intera yo kureba iba nini.
Urugero, uburebure bwa mm 2.8 bukwiriye kugenzura intera iri hagati ya metero 10 n'aho umuntu areba dogere 100, bigatuma bukwiriye kugenzura aho abantu babika amafaranga mu nzu, ascenseur, n'ahandi hantu hari intera runaka; uburebure bwa mm 8 cyangwa irenga bukwiriye kugenzura intera iri hagati ya metero 15, bigatuma bukwiriye kugenzura intera ndende mu bice binini nko mu bubiko no mu bibanza byo guparika imodoka.
Uburebure bw'ibanze ni ikintu cy'ingenzi kigomba kwitabwaho
(2) Umwobo. Umwobo ugena ingano y'urumuri rwinjira muri kamera, bigira ingaruka ku buryo butaziguye ku ngaruka zo gufata amashusho nijoro. Umwobo munini wemerera urumuri rwinshi kwinjira, bigatuma amashusho agaragara neza mu duce tudakoresha urumuri rwinshi kandi bigatuma uba mwiza mu gihe cyo kugenzura nijoro nta rumuri rw'inyongera. Umwobo muto ukwiriye cyane ahantu hafite urumuri rwiza aho hakenewe ubwiza rusange bw'ahantu hakorerwa amashusho—nk'aho hakorerwa cyangwa mu bubiko.
Mu hantu ho hanze cyangwa ahandi hantu aho urumuri rwo mu kirere ruhindagurika cyane, ni byiza guhitamolentileifite imiterere ya auto-iris, ishobora kwihindurira mu buryo bwikora bitewe n'impinduka z'urumuri.
(3) Urwego rw'Ishusho. Urwego rw'Ishusho rufitanye isano rya hafi n'uburebure bw'inyuma, kandi rugena neza uburebure bw'ishusho rishobora gukwirakwira. Muri rusange, indorerwamo z'impande nini zifite urwego rurerure rwa dogere 90, bigatuma zikoreshwa mu kugenzura ahantu hanini nko mu bibuga by'imodoka no mu mbuga rusange; indorerwamo za telefoto zifite urwego rurerure rwa dogere 30 kandi ni nziza cyane mu kugenzura intera ndende—urugero, mu bikorwa birimo kumenya icyapa cy'imodoka no kumenya isura.
(4) Ubushobozi bwo kureba. Uko indorerwamo y'ikirahure irushaho kuba nziza, niko ishusho izaba isobanutse neza. Ariko, ubushobozi bwo kureba bugomba guhuza n'ibisabwa n'intego ikurikiranwa. Si byiza buri gihe kugira ubushobozi bwo kureba hejuru.
Muri icyo gihe, ubushobozi bwo kureba amashusho bwa lens ubwayo bugomba no guhuza ubushobozi bwo kureba amashusho bwa kamera. Kamera zifite ubushobozi bwo kureba amashusho zigomba guhuzwa n'amabara afite ubushobozi bwo kureba amashusho, bitabaye ibyo impande z'ishusho zizaba zitagaragara neza; amabara afite ubushobozi bwo kureba amashusho menshi hamwe n'amabara afite ubushobozi bwo kureba amashusho make nabyo bitera gupfusha ubusa ubushobozi bwo kureba amashusho.
Urugero, lenzi ya megapixel 2 ishobora guhaza ibyifuzo by'ibanze byo kugenzura ibintu, nko kureba imiterere y'abantu n'imyitwarire yabo muri rusange, kandi ikwiriye mu gukurikirana muri rusange inzira n'ububiko bisanzwe.
(5) Gushyiramo na sensor. Gushyiramo lens bisanzwe birimo M12, C, na CS. Mbere yo kuyishyiraho, ni ngombwa kugenzura ko lens ijyanye n'aho kamera ikorera; kutabikora bishobora gutuma ifoto igaragara neza cyangwa bigatera kwangirika kw'ibikoresho.
Ihame nk'iryo rikoreshwa ku bunini bwa sensor: uruziga rw'ishusho ya lens rugomba kuba rujyanye n'ingano ya sensor ya kamera; bitabaye ibyo, ishusho ishobora kwangirika cyane, bigatuma bidashoboka gufata ishusho isobanutse neza.
Guhuza ibipimo bya lense za CCTV ni ingenzi cyane
3.Uburebure n'inguni byo gushyiraho
Uburebure n'inguni by'aho byashyizwelentilekandi kamera na yo igira ingaruka ku bisubizo byo gukurikirana. Muri rusange, uko kamera ishyirwa hejuru, ni ko ubuso bwayo bwo gutwikira burushaho kuba bwinshi. Mu gufata ishusho ireba hasi uturutse ahantu hirengeye, ni ngombwa kongera uburebure bw'inyuma kugira ngo wirinde gupfusha ubusa umwanya hejuru y'ishusho.
4.Ubushobozi bwo kugenzura nijoro
Niba porogaramu isaba igenzura rya nijoro, ni ngombwa kandi gutekereza ku nyubako y'ijisho ishyigikira ubwiza bwa infrared (IR) nijoro kandi ifite imikorere ya IR cut filter, kugira ngo habeho amashusho meza haba ku manywa na nijoro.
5.Guhuza ibidukikije no kuramba
Mu guhitamo lenti za CCTV, ni ngombwa kandi kuzirikana uburyo zihuzwa n’ibidukikije no kuramba—cyane cyane ku lenti zagenewe gukoreshwa hanze. Hakwiye kwitabwaho cyane niba zifite ibintu birinda, nko kwirinda ivumbi n’amazi, kugira ngo hirindwe ko amazi y’imvura yinjira mu buryo bushobora kwangiza lenti cyangwa gutuma ishusho yayo inanirwa.
Guhitamo indorerwamo za CCTV bigomba kandi kwita ku buryo ibidukikije bihuzwa n’ibidukikije kandi bigakomeza kubaho.
6.Gahunda zo guhitamo ibintu bitandukanye bikoreshwa
(1) Igenzura ry'inzu: Cyane cyane ryagenewe gutwikira ibyumba byose—nk'icyumba cyo kubamo—amahitamo meza ni ay'impande ninilentileifite uburebure bwa mm 4 n'aho ireba hafi dogere 70, bikuraho gukenera gukosora inguni kenshi.
(2) Inzira zo kunyuramo no kugenzura inzira: Iyi gahunda yibanda cyane cyane ku kugenzura inzira nto, igamije gufata neza urujya n'uruza rw'abantu n'ibintu biri hagati. Indorerwamo zifite uburebure bwa mm 2.8 cyangwa mm 4 zirasabwa kugira ngo zifashe neza uburebure bwa metero 2.5 kugeza kuri 3. Ni byiza gushyiraho uburebure bwa metero 2.5 kugeza kuri 3 kugira ngo hirindwe inguni yo hasi cyane, ishobora gutera imbogamizi mu maso.
(3) Igenzura ry’aho imodoka zihagarara/ububiko: Intego nyamukuru ni ukubona neza plaque cyangwa imiterere y’abakozi. Ushobora guhitamo lens ifite uburebure bwa mm 8 cyangwa burebure kugira ngo umenye plaque n’imodoka ku ntera ya metero 15-30 no kubona neza amasura. Mu gihe ushyira hanze, menya neza ko witaye ku gipimo cy’ilansi idapfa amazi kandi idapfa kuvumbirwa n’ivumbi.
(4) Gukurikirana ibiro mu bubiko: Ahantu hafungiye, kandi ni ngombwa kuringaniza imiterere n'ibisobanuro. Icyibandwaho cyane ni ibidukikije muri rusange n'ibisobanuro. Indorerwamo za 4mm cyangwa 6mm zishobora gutoranywa. Niba ari ngombwa kwandika neza inzira z'ibikorwa cyangwa imiterere y'isura, indorerwamo ya 6mm irasabwa.
Hari amahitamo atandukanye ku birebana n'uburyo butandukanye bwo gukoresha porogaramu
(5) Igenzura rinini ry’ahantu hafunguye: Mu bice binini nka kare, lenzi imwe ntihagije kugira ngo ipfundike amakuru yose. Ubusanzwe ni ngombwa gushyiramo uruvange rw’amalenzi. Urugero, lenzi ya 2.8mm ishobora gukoreshwa mu kureba panorama, mu gihe lenzi ya 8mm ishobora gukoreshwa mu kureba utuntu duto tw’ingingo idahinduka. Lenzi ya varifocal ishobora gutoranywa kugira ngo ihindure neza uburebure bw’inyuma.
(6) Igenzura ry’aho imodoka zihurira: Aho imodoka zihurira nko mu mihanda minini hasaba igenzura ry’intera ndende cyane kugira ngo harebwe neza plaque cyangwa ibintu biri muri metero amagana. Sisitemu zishobora gushyirwaho lens zidasanzwe zifite uburebure buri hagati ya mm 30 na mm 120; iyo zihujwe na kamera zifata amashusho y’ubushyuhe bwa infrared, zigenzura neza ndetse no mu masaha ya nijoro cyangwa mu gihe cy’ikirere kibi.
Mu bihe bitandukanye, kwibanda ku kintu kimwe cyangwaindorerwamo za varifocalishobora gutoranywa hakurikijwe ibikenewe mu igenzura. Muri rusange, lenzi zihamye zihendutse kandi zihamye, bigatuma zikwiriye intego zo kugenzura n'ibihe aho intera ihamye; lenzi zo mu bwoko bwa varifocal, ku rundi ruhande, zifite uburebure bushobora guhinduka, bigatuma zikwiriye ibihe aho intera cyangwa intego yo kugenzura igomba guhindurwa mu buryo bworoshye.
Igihe cyo kohereza: Kamena-02-2026
