Pane imwe nguva yapfuura, vanhu vashomanana vanogona kutora vhidhiyo usiku. Mukuwedzera, zvakanga zvisingakanganisi, nokuti magetsi anowanzoitika anogona kupindira nekuzorora usiku kune vamwe, nepo achipedza huwandu hwemagetsi. Panguva imwe chete, pasina kubvumira shure, makamera anounza chifananidzo kunze kwekujekesa kwakakodzera, zvakanyanya kujeka. Nhasi, mugadziri anotsvaga kugadzirisa dambudziko iri mune imwe nzira, achishandisa majekitoreti emavhidhiyo ekuongororwa kwevhidhiyo.
Chii chinonzi IR nyanzvi dzemakamera eCCTV?
IR (kana infrared) floodlights ndiyo chigadziko chemwenje chinoshanda pazhinji ma LED mababu. Ivo vashoma mukukura. Asi chinhu chikuru hachisi ichi. I IR nyanzvi inoshandisa LED dzisinganyatsozivikanwi, asi miviri yakareba. Kuva nehuwandu hwepamusoro hwe 940 -950 nm, ma LED asingadaro anowira munharaunda iyo yemasikirwo anooneka kune ziso revanhu. Izvi zvinoreva kuti mu-switching-on state musha weR IR projector haupindi kupesana nevagari vedzimba dziri pedyo nekamera uye hazvikweve kutarisa kwevashandi. Muchiitiko ichi, CCTV makamera inoratidzira zviri kuitika nehupamhi hwekujekesa.
Mukuwedzera, ma LED anotaridzika nechepasi simba rinoshandiswa, pasinei nokuti ivo vanoshanda usiku hwose. Izvi zvinonyanya kuchengetedza pane zvinyorwa zvekushandisa simba kune vadzidzisi vekutengesa kukuru, nzvimbo yekuchengetedza kana nzvimbo yehofisi.
Nzira yekusarudza i IR spotlight ye video seiko?
Kusvika pari zvino, misika yakakosha inomiririrwa nehukuru hwakawanda, kusarudza yakarurama kunowanzova kwakaoma zvikuru.
Imwe yenzira dzinonyanya kukosha yekutenga ndiyo yavelength. Kana iwe uchida kuti injector ive isina kuonekwa zvachose, unofanirwa kuwana mishonga ine chiratidzo chinenge 900 nm uye yakakwirira. Kana iwe ukaisa IR-injector newavelength ya700 kusvika ku 850 nm, ipapo murima rose zvingave zvichibvira kuongorora kusina simba kwemashure.
Chimwe chimiro-chekucherechedza rutivi-chinoratidza mararamiro kubva pane iyo chidimbu chinonyatsosiyanisa chimiro chomunhu. Zvisinei, chiratidzo ichi chinoenderana nekunzwa kwekamera pachako, pamwe chete nekugadzirisa kwayo. IR refu-range projekti inogona kuvhara inenge mamiriyoni makumi mana, duku - mamiriyoni gumi chete.
Kubva pakona kwekujekesa kwe IR-injector zvakare kunobva pane kuti nzvimbo yacho yakajekeswa sei, uye naizvozvo yakareba yekhamera. Kazhinji chimiro chacho chinosiyana kubva kune makumi maviri kusvika kune makumi matanhatu.
Inonzi infrared projector inoshandiswa kubva mumakumbo nemaoko e12 volts.