Umahluko phakathi kwe-850nm kunye ne-940nm LEDs

Iikhamera zokuzingelaziye zaba sisixhobo esibalulekileyo kubazingeli kunye nabathandi bezilwanyana zasendle, okubavumela ukuba bathathe imifanekiso ekumgangatho ophezulu kunye neevidiyo zezilwanyana zasendle kwindawo yazo yendalo.Enye yezinto eziphambili zekhamera yokuzingela yi-infrared (IR) LED, esetyenziselwa ukukhanyisa indawo kwiimeko zokukhanya okuphantsi ngaphandle kokwazisa izilwanyana malunga nobukho bekhamera.Xa kuziwa kwiikhamera zokuzingela, iintlobo ezimbini eziqhelekileyo ze-IR LEDs yi-850nm kunye ne-940nm LEDs.Ukuqonda umahluko phakathi kwezi ntlobo zimbini zee-LED kubalulekile ekukhetheni okulungileyoikhamera yomdlalo kwiimfuno zakho ezithile.

Umahluko ophambili phakathi kwe-850nm kunye ne-940nm ye-LED ilele kubude bokukhanya kwe-infrared ezikukhuphayo.Ubude bokukhanya bokukhanya bulinganiswa ngeenanometers (nm), kunye ne-850nm kunye ne-940nm ebhekiselele kuluhlu oluthile lwe-spectrum ye-infrared.I-850nm ye-LED ikhupha ukukhanya okubonakalayo kancinci kwiliso lomntu, kubonakala njengokukhanya okubomvu okufiphele ebumnyameni.Ngakolunye uhlangothi, i-940nm LED ikhupha ukukhanya okungabonakaliyo ngokupheleleyo kwiliso lomntu, okwenza kube yinto efanelekileyo yokubeka iliso efihlakeleyo kunye nokuqwalaselwa kwezilwanyana zasendle.

Ngokwezinto eziphathekayo, ukhetho phakathi kwe-850nm kunye ne-940nm LEDs kuxhomekeke kwisicelo esithile sekhamera yokuzingela.Kubazingeli abafuna ukubeka iliso kwiindlela zezilwanyana kunye nemisebenzi yezilwanyana zasendle ngaphandle kokuphazamisa izilwanyana, i-940nm LED lolona khetho lukhethwayo.Ukukhanya kwayo okungabonakaliyo kuqinisekisa ukuba ikhamera ihlala ingabonwa, ivumela ukuziphatha okungaphezulu kwendalo kunye nokwenyani kwezilwanyana zasendle ukuba zifakwe kwikhamera.Ukongeza, i-940nm ye-LED ayinakukwazi ukuphambanisa izilwanyana zasebusuku, iyenza ibe lolona khetho lubalaseleyo lokuthatha imifanekiso kunye neevidiyo zezidalwa zasebusuku.

Kwelinye icala, i-850nm ye-LED inokuba ifanelekile ngakumbi kuhlolo jikelele kunye neenjongo zokhuseleko.Ngelixa ikhupha ukubengezela okubomvu okufipheleyo okungabonakaliyo ebantwini, isenokubonwa zizilwanyana ezithile ezinombono ophakamileyo ebusuku, njengeentlobo ezithile zamaxhama.Ke ngoko, ukuba eyona njongo iphambili kukuthintela abachasi okanye ukubeka iliso kwindawo ngeenjongo zokhuseleko, i-850nm LED inokuba lukhetho olungcono ngenxa yokukhanya kwayo okubonakalayo.

Kubalulekile ukuba uqaphele ukuba ukhetho phakathi kwe-850nm kunye ne-940nm LEDs lukwachaphazela uluhlu kunye nokucaca kombono wekhamera ebusuku.Ngokubanzi, ii-LED ze-850nm zibonelela ngokukhanya okungcono kancinci kunye noluhlu olude xa kuthelekiswa nee-940nm ze-LED.Nangona kunjalo, ulwahlulo kuluhlu luncinci, kwaye ukurhweba ngokunyuka kokungabonakali kunye ne-940nm LEDs kaninzi kunokugqithisa inzuzo encinci kuluhlu olunikezwa yi-850nm LEDs.

Ukuqukumbela, umahluko phakathi kwe-850nm kunye ne-940nm ii-LED kwiikhamera zokuzingela zibilisa ngokubonakala kunye nokungabonakali.Ngelixa i-850nm ye-LED ibonelela ngokukhanya okungcono kunye noluhlu, i-940nm ye-LED ibonelela ngokungabonakali ngokupheleleyo, iyenza ibe lolona khetho lukhethwayo lokujongwa kwezilwanyana zasendle kunye nokucupha okufihlakeleyo.Ukuqonda iimfuno ezithile kwiimfuno zakho zokuzingela okanye zokubeka iliso kuya kukunceda wenze isigqibo esinolwazi xa ukhetha phakathi kwezi ntlobo zimbini zee-LED zakho.iikhamera zezilwanyana zasendle.