Ulwazi lwesayensi oludumile mayelana nesithwebuli seminwe

Ubuchwepheshe, isoftware kanye ne-Hardware yeScanner Fingerprint kuhlale kukhula njalo. Njengamanje, kunezinhlobo eziningi zezinzwa ezisetshenziswa ekukhishini komnyango emakethe, futhi izici zazo zihlukile futhi imisebenzi yazo ethile ihlukile futhi. Abanye abangane okhiye bathi kunezinhlobo eziningi zezinzwa zokuqashelwa zeminwe Ngalesi sizathu, ucwaningo lwe-Fingerprint Scanner Pro lwamema ochwepheshe abafanelekile embonini ukuzokulethela ulwazi olufanele mayelana nabakhiqizi be-Fingerprint Isikhathi Sokubakhona Kweminwe. Izinhlobo zezinzwa zokuqashelwa zeminwe ze-Fingerprition okwamanje, kunezinhlobo ezintathu zezinzwa zemakethe yokuqashelwa kweminwe: infrared, i-radar ye-radar (i-radar ye-laser (tof, ehlelekile), kanye ne-millimeter wave radar.

1. I-infrared umgomo wezinzwa ezingezinhlabelelo ukusebenzisa ama-transmitters we-infrared ukuze akhiphe imisebe ye-infreed kuma-angles athile, nakwamukela ukuthola amasiginali kwathola ama-angles athile. Ibanga elizwakalayo linqunywa ngokuya ngama-engeli okudlulisela kanye nokwamukela. Izinzwa ezingenampilo zisetshenziswa kabanzi futhi zinenombolo enkulu yezicelo zezokwelapha, ezempi, kwezemvelo nakwezinye izinkambu. Ziyinzwa evame kakhulu, efana nezithombe ezijwayelekile ze-infraled. Uma kuqhathaniswa nezinye izinzwa, izinzwa ezingekho emthethweni zinezindleko eziphansi kakhulu futhi zinezinzuzo zesakhiwo esilula nempendulo ebucayi. Kepha ngasikhathi sinye, ibanga lokulinganisa le-infrared nokunemba kumpofu kakhulu, futhi kunezidingo zombala wento ephakeme. Kuyazwela emhlophe futhi akunangqondo kuMnyama (okungukuthi, ukukhanya kudonswa kalula ngabamnyama futhi akubanjwa kalula owemukelayo).

2 Umgomo we-TOF ukuthi umdluliseli we-laser akhipha i-laser ye-infrared infrared, futhi owemukelayo ubala umehluko wesikhathi phakathi kokuphuma nokwamukela, futhi ibanga lingabalwa ngokuya ngejubane lokukhanya. Ukukhanya okuhlelekile ukuthi i-Laser Transmitter ikhipha indawo ekhanyayo, futhi ibanga linqunywa ukubala usayizi wendawo yokukhanya. I-Lidar inokunemba okuphezulu kakhulu, futhi ngasikhathi sinye, ingathola imininingwane yokujula kwento ephakeme ngokunemba okuphezulu. Kepha ngasikhathi sinye, i-lidar iyabiza kakhulu futhi ithintwa kalula yizici zezemvelo, njengokukhanya kwelanga, imvula, inkungu, njll.

I-3. I-Milimeter Wave Radar MilimeWeter Wave isho ibhendi enomhlaba osebenzayo we-1 kuye ku-10 mm. Umgomo ukuthi i-Transmitter ikhipha amagagasi ama-millimeter, futhi owemukelayo ubala ibanga ngomphumela we-doppler. Umphumela weDoppler ubhekisa oguqukayo ku-wavelength yemisebe yento ngenxa yokunyakaza okuhlobene komthombo wegagasi nomqapheli. Phambi komthombo wegagasi oshukumisayo, igagasi licindezelwe, i-wavengeth iba mfushane, futhi imvamisa iba ngaphezulu; Ngemuva komthombo wegagasi oshukumisayo, i-wavelength iba isikhathi eside futhi imvamisa iba phansi; Lapho kuphakama ijubane lomthombo wamagagasi, kuba mphumela omkhulu. Ngokwezinga eliphansi le-Red (noma eliluhlaza okwesibhakabhaka) legagasi, ijubane lomthombo wave ehamba ngendlela yokuqapha ingabalwa.