Isayensi ethandwayo Yezinzwa Zomunwe Scanner

Ubuchwepheshe, isoftware kanye ne-hardware yeScanner Fingerprint kuye kwathuthuka ngokuqhubekayo. 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 zesithwebuli zeminwe futhi azikwazi ukuthola umehluko. Ngalesi sizathu, ucwaningo lwe-Fingerprint Scanner Pro lwamema ochwepheshe abafanelekile embonini ukuzokulethela ulwazi olufanele mayelana nezinzwa ze-Fingerprint Scanner. Izinhlobo zezinzwa ze-Fingerprint Scanner okwamanje, kunezinhlobo ezintathu zezinzwa ezimakethe zesithwebuli somunwe: infrared, i-lidar (tof (tof (tof, ukukhanya okuhleliwe), kanye ne-millimeter wave radar.

1. I-infrared umgomo wezinzwa ezingezinhlabelelo ukusebenzisa ama-transmitters we-infrared ukuze ukhiphe imisebe ye-infrared nge-angle ethile, futhi abamukelayo bathola amasiginali endaweni ethile. Ibanga elizwakalayo linqunywa ngokuya ngama-engeli okudlulisela kanye nokwamukela. Izinzwa ezingenampilo zisetshenziswa kabanzi futhi zinenombolo enkulu yezicelo zezokwelapha, ezempi, kwezemvelo nakwezinye izinkambu. Bayinzwa evame kakhulu, efana nezimo zokushisa ezijwayelekile, izifanekiso ezishisayo ze-infral, njll. Uma ziqhathaniswa nezinye izinzwa, izinzwa ezingekho emthethweni zinezindleko eziphansi 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. Izinzwa zeLidar Lidar zihlukaniswe ikakhulukazi izinhlobo ezimbili, i-tof eyodwa-point tof kanye nokukhanya okuhlelekile. 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.
3. Millimeter Wave radar millimeter wave ubhekisa ebhendi nge-wavelength esebenzayo ye-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.