Nkhani

Kuzindikira zala zala, monga mmodzi wa ambiri umisiri biometric chizindikiritso, makamaka amagwiritsa ntchito kusiyana khungu kapangidwe zala za anthu, ndiye zitunda ndi zigwa za kapangidwe.Popeza chitsanzo cha zala munthu aliyense, breakpoints ndi mphambano ndi zosiyana, , ndipo amakhalabe zosasintha moyo wonse, kotero kuzindikira zala wakhala kwambiri ambiri ntchito ndi okhwima luso pakati pa umisiri zambiri biometric.Pakalipano, kuzindikira zala zala kumagwiritsidwa ntchito kwambiri pofufuza zaumbanda, zotsutsana ndi uchigawenga, chitetezo cha dziko, anti-narcotics, chitetezo cha anthu, ndi zina zotero. moyo.

Mfundo yogwira ntchito yozindikiritsa zala zala imaphatikizapo ntchito zitatu: kuwerenga zithunzi za zala, kuchotsa zinthu, ndi kufanizira zala.Ukadaulo wodziwika bwino wa zala zala ndi: kuwala, capacitive, ndi ultrasonic.

Kuzindikira zala zakumaso

Kuzindikira zala zakumaso ndiukadaulo wozindikiritsa zala zala zakale.Imagwiritsa ntchito mfundo zowunikira komanso kuwunikira kuti zizindikire zala.Mbali ya refraction ya kuwala komwe kumatulutsa pa mizere yosagwirizana pamwamba pa chala ndi kuwala kwa kuwala konyezimira kudzakhala kosiyana, potero kusonkhanitsa kuwala kosiyana ndi mulingo wamdima wa chidziwitso cha chithunzi kuti mumalize kusonkhanitsa zala.
Owerenga zala zala zakumaso ali ndi zofunika kwambiri pakuwunikira komanso kulumikizana pakati pa zala zala ndi sensa, ndipo zimafunikira kulumikizana bwino ndi zala ndi kuyanjanitsa.Choncho, ma modules optical fingerprints nthawi zambiri amakhala ndi malo akuluakulu ndipo amakhala ndi zofunikira zina za kutentha ndi chinyezi, ndipo kuzindikira kwake sikoyenera kwambiri.Ubwino waukadaulowu ndikuti ndiwotsika mtengo ndipo ndiwoyenera kuzindikiritsa zala zala, monga makina owonera zala.

Kuzindikira zala za capacitive

Kuzindikira zala zala ndizovuta kwambiri kuposa kuzindikira zala zala.Mfundo yake ndikuphatikizira kuzindikira kupanikizika, capacitive sensing, sensing matenthedwe ndi masensa ena mu chip.Chala chala chikasindikiza pamwamba pa chip, sensor yamkati ya capacitive ipanga chithunzi chala chala kutengera kusiyana kwa mtengo (kapena kusiyana kwa kutentha) komwe kumapangidwa ndi chala chala ndi cholumikizira, chomwe chimafunikira kulumikizana kwabwino pakati pa chala ndi sensor.
Ubwino wogwiritsa ntchito kuzindikira zala zala za capacitive ndikuti mawonekedwe ake ndi apamwamba, kupotoza kumakhala kochepa, ndipo chizindikiro chamagetsi chidzadutsa pakhungu lakufa pamwamba pa chala, kotero kuzindikira kwa thupi lamoyo kumatha kuchitika, zomwe zimathandizira kwambiri chitetezo cha kuzindikira zala.Komabe, kuzindikira zala za capacitive kulinso ndi zolakwika zake.Zithunzi zala zala zapamwamba kwambiri zimafuna tinthu tating'ono tating'ono ta capacitive, zomwe zidzakulitsa kwambiri mtengo.Ndipo chifukwa kuzindikira zala zala za capacitive kumadalira zitunda ndi zigwa za chala, ngati pamwamba pa chala chaipitsidwa ndi dothi kapena thukuta, zidzasintha chidziwitso cha kapangidwe kake pamwamba pa chala, zomwe zimatsogolera ku kuzindikira kolakwika.

Akupanga kuzindikira zala zala

Kuzindikira zala zala za akupanga ndiukadaulo watsopano womwe umagwiritsa ntchito mafunde amawu kuti mupeze zambiri zala zala.Sensa imatulutsa ma ultrasonic pulses, omwe amabalalika ndikuwonekera akakumana ndi zala zala.Sensa imalandira chizindikiro cha akupanga ndikuchotsa zala zala posanthula kusintha kwa siginecha.Owerenga zala za ultrasonic ali ndi zofunikira zochepa zolumikizirana pakati pa chala ndi sensa, kotero amatha kugwira ntchito pakakhala mtunda wina kuchokera pa chala.Ubwino wa teknolojiyi ndi kukana kwake kwakukulu kwa dothi ndi zokopa.Ndi njira yodalirika yozindikiritsira zala.Komabe, kuzindikira zala za akupanga sikuli kopanda zophophonya zake.Mtengo wa kuzindikira zala za akupanga ndi wapamwamba, ndipo siwomvera ngati kuzindikira kwa zala zala komanso capacitive.Komanso si bwino yogwirizana ndi zoteteza mafilimu a zipangizo zina, amene kuchepetsa akupanga zala kuzindikira.kulondola.

Kutengedwa palimodzi, kuwala, capacitive, ndi ultrasonic zala kuzindikira ali ndi ubwino ndi kuipa.Kuzindikiritsa zala zala za capacitive ndizomwe zimagwiritsidwa ntchito kwambiri, koma kuzindikira kwa zala za akupanga kumakhala ndi chitetezo chapamwamba kwambiri.Ngakhale kuzindikirika kwa zala zakumaso ndikotsika mtengo kwambiri, kumakhala ndi chitetezo chochepa komanso kuzindikirika.

Shenzhen Handheld-Wireless Technology Co, Ltd imapereka zogwirizira m'manja ndi mapiritsi olimba omwe pakali pano amathandizira zala zowoneka bwino, ali ndi kuthekera kolimba kwachilengedwe komanso kudana ndi zabodza.Atha kugwiritsidwa ntchito kwambiri pachitetezo cha anthu, kasamalidwe ka chitetezo cha anthu, chitetezo, kasamalidwe kaulamuliro wofikira, ndi zina.