Makanema a CCTV makamera

Pakadali pano, pofuna chitetezo, kujambula kanema kumachitika ndi mitundu iwiri ya makamera - digito ndi analog. Digital ndi otsatira a analog, koma otsirizirawo sasiya kutchuka kwawo mpaka lero. Nkhaniyi ndi yokhudza makamera a analog a CCTV.

Kodi amagwira ntchito bwanji?

Kamvedwe ka kanema kamakono kamatulutsa kuwala ndikukudyetsa ku matrix a CCD, kusandulika kukhala chizindikiro cha magetsi ndikuchiyendetsa pamtengowo kupita ku chipangizo cholandirira. Makamera ojambulidwa ndi makanema amasiyana ndi ma digito kuti samasintha chizindikiro cha magetsi mu khodi lachidutswa, koma amawatumiza ku mawonekedwe osindikizira mwa mawonekedwe osasintha. Izi zimapangitsa kukhala kosavuta kufufuza ndikusintha chizindikiro pa kompyuta. Ndiyenera kunena kuti kamera yotere ikhoza kugwirizanitsidwa ndi ojambula a digito ndi kulandira chizindikiro kuchokera ku makamera angapo a kanema.

Zida zamtundu uwu zimatha kutumiza chithunzi pa intaneti kupita kulikonse padziko lapansi, ndipo kamodzi m'malo osiyanasiyana, ndikuwonetsa pazowonongeka zingapo panthawi imodzi. Pachifukwachi, kugwiritsiridwa ntchito kwa multiplexer kunayambitsa kanema kanema m'magulu osiyanasiyana.

Makhalidwe a makamera a analog CCTV:

1. Chilolezo . Pansi ndi 480 TVL, pafupifupi ndi 480-540 TVL, ndipo apamwamba ndi 540-700 TVL ndi apamwamba. Makamera a Analog CCTV of resolution high amapangitsa kuti zikhale zosiyana kusiyanitsa nkhope za odutsa ndi mapulogalamu a layisensi a magalimoto pamtunda waukulu kwambiri. Chowonadi ndi DVR pazomwezi zikufunika kukhazikitsa zamphamvu zambiri.
2. Photosensitivity . Mpweya wotsika 1.5 wotsika umagwiritsidwa ntchito kuwombera kuwala kwadzuwa. Wapamwamba kuposa 0.001 lux akhoza kugwira ntchito pansi pa kuwala kulikonse.
3. Zizindikiro za lenti . F2.8 imapanga maonekedwe a madigiri 90, ndi F 16 - osapitirira madigiri 5.

Zotchuka kwambiri ndi makanema a analog CCTV a RVI, omwe ali atsopano omwe ali ndi mphamvu zowonjezereka, omwe amatha kutumiza chizindikiro kwa mtunda wa mamita 500, 20 kuwonjezereka chithunzi ndi kuwombera ngakhale mumdima, popanda chitsime chakuya pamtunda wa mamita 100. Kuwonjezera pamenepo, IR-spotlight ikhoza kusungidwa ndi zinthuzo ndikuyika kamera pafupi ndi msewu kapena msewu waukulu. Kamera za analog zimaphatikizapo kusagwirizana kwa njira zosiyanasiyana kuchokera kwa opanga osiyana, ndizosavuta kusonkhana ndikusintha. Chojambuliracho chimatenga chirichonse mwamtheradi ndipo chiri ndi mtengo wotsika.