Momwe mungasankhire kamera yoteteza masomphenya ausiku

Kaya mukuyang'ana kamera yachitetezo chamtundu wamtundu wausiku kapena kamera yoteteza kunja kwa infrared, dongosolo lathunthu, lopangidwa bwino limadalira kusankha kamera yabwino kwambiri komanso yoyenera kwambiri yoteteza masomphenya ausiku.Kusiyana kwa mtengo pakati pa makamera olowera ndi okwera kwambiri owonera usiku amatha kuyambira $200 mpaka $5,000.Chifukwa chake, kamera ndi zotumphukira zina (monga magetsi a IR, magalasi, zotchingira zoteteza, ndi zida zamagetsi) ziyenera kuganiziridwa bwino musanasankhe mtundu woti musankhe.

Magawo otsatirawa akupereka malangizo pazomwe muyenera kuziganizira musanasankhe ndikuyika kamera yoteteza yopepuka yocheperako.

Samalani ndi kabowo ka kamera

Kukula kwa kabowo kumatsimikizira kuchuluka kwa kuwala komwe kungadutse mu lens ndikufika pa sensa ya zithunzi-zobowo zazikulu zimalola kuti ziwoneke zambiri, pamene zing'onozing'ono zimalola kuti zisawonongeke.Chinthu china choyenera kukumbukira ndi mandala, chifukwa kutalika kwapakati ndi kukula kwa pobowo ndizosiyana.Mwachitsanzo, mandala a 4mm amatha kutsekeka kwa f1.2 mpaka 1.4, pomwe mandala a 50mm mpaka 200mm amatha kungotsegula f1.8 mpaka 2.2.Chifukwa chake izi zimakhudza kuwonekera ndipo, zikagwiritsidwa ntchito ndi zosefera za IR, kulondola kwamtundu.Kuthamanga kwa shutter kumakhudzanso kuchuluka kwa kuwala komwe kumafika pa sensa.Kuthamanga kwa shutter kwa makamera otetezera masomphenya ausiku kuyenera kusungidwa pa 1/30 kapena 1/25 pakuwunika usiku.Kuyenda pang'onopang'ono kuposa izi kupangitsa kuti chithunzicho chisawonekere.

Mulingo wocheperako wowunikira kamera yachitetezo

Mulingo wocheperako wowunikira wa kamera yachitetezo umatchulanso kuwunika kocheperako komwe imajambulira makanema / zithunzi zowoneka bwino.Opanga makamera amatchula mtengo wotsikirapo kwambiri pamabowo osiyanasiyana, omwenso ndi nyali yotsika kwambiri kapena kumva kwa kamera.Mavuto omwe angakhalepo amatha kubwera ngati chiwongolero chocheperako cha kamera ndi chokwera kuposa mawonekedwe a infrared illuminator.Pankhaniyi, mtunda wogwira mtima udzakhudzidwa ndipo chithunzi chotsatira chidzakhala chimodzi mwa malo owala ozunguliridwa ndi mdima.

Mukayika magetsi ndi zounikira za IR, oyikapo ayenera kusamala momwe nyali za IR zimaphimba malo omwe akuyenera kuyang'aniridwa.Kuwala kwa infrared kumatha kudumpha pamakoma ndikuchititsa khungu kamera.

Kuchuluka kwa kuwala komwe kamera imapeza ndi chinthu china chomwe chingakhudze kwambiri magwiridwe antchito a kamera.Monga lamulo, kuwala kochuluka kumafanana ndi chithunzi chabwino, chomwe chimakhala chofunikira kwambiri pamtunda waukulu.Kupeza chithunzi chapamwamba kumafuna kuwala kokwanira kwa IR, komwe kumadya mphamvu zambiri.Pamenepa, zingakhale zotsika mtengo kwambiri kupereka kuwala kowonjezera kwa IR kuti kamera igwire ntchito.

Kuti mupulumutse mphamvu, magetsi opangidwa ndi sensa (wowunikira, oyendetsa, kapena otenthetsera kutentha) akhoza kuyatsa moto pamene kuwala kozungulira kumagwera pansi pa mlingo wovuta kwambiri kapena pamene wina akuyandikira sensor.

Mphamvu zakutsogolo za dongosolo lowunikira ziyenera kukhala zogwirizana.Mukamagwiritsa ntchito kuyatsa kwa IR, zinthu zofunika kuziganizira ndi monga nyali ya IR, IR LED, komanso mphamvu yamagetsi yamagetsi.Mtunda wa chingwe umakhudzanso dongosolo, monga momwe panopa akucheperachepera ndi mtunda woyenda.Ngati pali nyali zambiri za IR kutali ndi mains, kugwiritsa ntchito mphamvu yapakati ya DC12V kungayambitse nyali zomwe zili pafupi kwambiri ndi magetsi kuti ziwonjezeke, pomwe nyali zakutali zimakhala zofooka.Komanso, kusinthasintha kwamagetsi kumatha kufupikitsa moyo wa nyali za IR.Nthawi yomweyo, mphamvu yamagetsi ikatsika kwambiri, imatha kukhudza magwiridwe antchito chifukwa cha kuwala kosakwanira komanso mtunda wosakwanira woponya.Chifukwa chake, magetsi a AC240V akulimbikitsidwa.