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中山指紋鎖生產廠家:指紋鎖原理科普

2021-10-04 1128

  指(zhi)紋(wen)辨(bian)認(ren)的(de)(de)(de)(de)歷史(shi):早在(zai)2000多年前我國(guo)古代的(de)(de)(de)(de)人就將指(zhi)紋(wen)用(yong)于簽訂(ding)合同和破案了,戰國(guo)時(shi)期的(de)(de)(de)(de)著作(zuo)《云夢竹簡》中舊紀錄了將指(zhi)紋(wen)作(zuo)為破案證(zheng)據的(de)(de)(de)(de)故事。在(zai)唐朝(chao)指(zhi)紋(wen)技術的(de)(de)(de)(de)開(kai)(kai)展有了更大的(de)(de)(de)(de)進(jin)步,當時(shi)的(de)(de)(de)(de)學者賈(jia)公(gong)彥是指(zhi)紋(wen)辨(bian)認(ren)開(kai)(kai)拓先驅,當時(shi)他(ta)發現每個人的(de)(de)(de)(de)指(zhi)紋(wen)的(de)(de)(de)(de)乳突(tu)和花紋(wen)結構都不相同。比(bi)如(ru)有人是斗狀(zhuang)紋(wen),有人是箕狀(zhuang)紋(wen)。他(ta)們經過這個細節的(de)(de)(de)(de)比(bi)照進(jin)行指(zhi)紋(wen)的(de)(de)(de)(de)辨(bian)認(ren)。

  指(zhi)(zhi)(zhi)(zhi)紋辨認(ren)認(ren)證的流程:指(zhi)(zhi)(zhi)(zhi)紋辨認(ren)是當人們(men)手指(zhi)(zhi)(zhi)(zhi)觸摸指(zhi)(zhi)(zhi)(zhi)紋辨認(ren)儀(yi)器的時(shi)分,采(cai)集人體指(zhi)(zhi)(zhi)(zhi)紋信(xin)(xin)息(xi),然后對指(zhi)(zhi)(zhi)(zhi)紋信(xin)(xin)息(xi)進行數字化處理,再與你事前(qian)錄入的指(zhi)(zhi)(zhi)(zhi)紋相(xiang)比對。終輸出比照反應信(xin)(xin)息(xi)。

  指紋辨(bian)認技術的種類:

  1.光(guang)學(xue)指(zhi)紋辨認

  望文(wen)生義(yi),這(zhe)是利用光(guang)的(de)(de)反射(she)原(yuan)(yuan)理,反射(she)你的(de)(de)指紋(wen)。造價很廉價,在辨(bian)認上(shang)(shang)收到很大的(de)(de)影響。臟手(shou)、濕(shi)手(shou)都很難辨(bian)認,并且這(zhe)種(zhong)方式還(huan)有被假(jia)指紋(wen)盜(dao)刷(shua)的(de)(de)危險。這(zhe)種(zhong)技(ji)術不單單應(ying)用在打卡機(ji)和(he)指紋(wen)鎖上(shang)(shang)。現在很多(duo)手(shou)機(ji)的(de)(de)屏下指紋(wen)辨(bian)認便是選用光(guang)學原(yuan)(yuan)理的(de)(de)。

  光(guang)學指紋(wen)辨認的特色:廉(lian)價(jia)、精細度(du)低(di)、安保(bao)性(xing)低(di)

    中山指紋鎖生產廠家

  2.半(ban)導體指紋辨認

  一(yi)般也叫做(zuo)電(dian)(dian)容(rong)(rong)(rong)(rong)辨認、活體指(zhi)(zhi)(zhi)紋(wen)(wen)辨認。其原理是(shi):在(zai)辨認傳(chuan)感器(qi)(qi)上(shang)設置了十分多的(de)電(dian)(dian)容(rong)(rong)(rong)(rong)極(ji)板,這(zhe)些電(dian)(dian)容(rong)(rong)(rong)(rong)極(ji)板的(de)面積(ji)都相同。當用戶(hu)將收(shou)之(zhi)按(an)在(zai)傳(chuan)感器(qi)(qi)上(shang)時,皮膚外表(biao)與這(zhe)些電(dian)(dian)容(rong)(rong)(rong)(rong)極(ji)板一(yi)一(yi)對應(ying),于是(shi)就形成了一(yi)個(ge)個(ge)完整的(de)平板電(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi),由(you)于指(zhi)(zhi)(zhi)紋(wen)(wen)存在(zai)突起的(de)嵴(指(zhi)(zhi)(zhi)紋(wen)(wen)凸起部分)和洼(wa)陷的(de)峪(指(zhi)(zhi)(zhi)紋(wen)(wen)洼(wa)陷的(de)部分)。因而(er)(er)每個(ge)電(dian)(dian)容(rong)(rong)(rong)(rong)兩個(ge)極(ji)板之(zhi)間的(de)間隔并不(bu)(bu)相同。從而(er)(er)導(dao)致(zhi)每個(ge)電(dian)(dian)容(rong)(rong)(rong)(rong)的(de)巨(ju)細不(bu)(bu)相同。電(dian)(dian)容(rong)(rong)(rong)(rong)式指(zhi)(zhi)(zhi)紋(wen)(wen)傳(chuan)感器(qi)(qi)便(bian)是(shi)經過檢測電(dian)(dian)容(rong)(rong)(rong)(rong)上(shang)因與指(zhi)(zhi)(zhi)紋(wen)(wen)觸摸時間隔的(de)不(bu)(bu)同而(er)(er)發生的(de)耦合(he)電(dian)(dian)容(rong)(rong)(rong)(rong)巨(ju)細的(de)差異來獲取指(zhi)(zhi)(zhi)紋(wen)(wen)信息。

  半導體指紋辨(bian)認技(ji)術(shu)的特色:精細度高、安保性強

  文章源自:中山指紋鎖生產廠家 //safegate.com.cn/

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