【正文】 Shan Chushi not having the key to enter the system, as well as in emerging national security application. This kind of sensor 300 (line) the miniature metal electrode is posed by 256 (row), each row connects to pair of S/On H electric circuit. Fingerprint image succession by a line of gathering, each metal electrode takes the electric capacity extremely, with it contact finger then is electric capacity another extremely. Has a deactivated level in the ponent surface, takes two electric capacities interelectrodes the dielectric sheet. Puts in on the sensor when the finger, in the fingerprint bulge and the indentation can have the different capacitance value in the array, and the constitution uses in an entire image which authenticates. Delimits the scratching sensor is one kind of new fingerprint gathering ponent, the request user has delimited the finger on the ponent. Delimits the scratching sensor the merit is the size small (for example Fujitsu39。 The registration authentication procedure hits the mark from a fingerprint 30~40 characteristic withdraws seven characteristics matches spot to carry on the confirmation at least, including constitutes some fingerprint detail the trace bifurcation and the end point, and is defined the characteristic point the distance. When carries on the registration, the information code is saved, will take the next user authentication the reference template. When the user enters the system, he/She has delimited the finger the sensor region, gains the scene scanning template and the reference template carry on the parison. The entire process pletes in 1 or 2 seconds. Through the parison, the system can determine whether this scene scanning template has contained the enough biological data which tallies with the reference template, and judgment two whether do match. If does not match, then the authentication defeat, waited for the next time will distinguish. This kind of fingerprint examination system performance is very high, makes the wrong judgment to the effective fingerprint the probability to be smaller than 1%, but invalid fingerprint for effective fingerprint possibility then does not exist nearly, its probability is lower than %. 新型指紋識(shí)別傳感器的應(yīng)用分析 摘 要 指紋識(shí)別技術(shù)作為一種先進(jìn)的身份識(shí)別方法，已經(jīng)被廣泛使用于各行各業(yè)中。這類(lèi)傳感器基于一種標(biāo)準(zhǔn)的單 多晶硅三層金屬 CMOS工藝，并采用 微米工藝進(jìn)行設(shè)計(jì)。這種軟件采集原始的指紋圖像，將圖像信息數(shù)字化并提取其中的細(xì)節(jié)模板，然后進(jìn)行測(cè)試，確定提取的細(xì)節(jié)模板是否與參考模板吻合 。在器件表面有一層鈍化層，作為兩個(gè)電容極間的電介質(zhì)層。此人則將其右手的第一、二或第三個(gè)手指置于一個(gè)與無(wú)線 PDA 相連的傳感器上，可以迅速將嫌疑人與以前的犯罪記錄進(jìn)行對(duì)比確認(rèn)。注冊(cè)過(guò)程十分簡(jiǎn)單：每個(gè)授權(quán)駕駛的成員將其手指置于傳感器上，并將汽車(chē)的各種參數(shù)按個(gè)人愛(ài)好進(jìn)行設(shè)置，然后將這些設(shè)置存入車(chē)載的電腦存儲(chǔ)器中。原來(lái)執(zhí)法機(jī)構(gòu)使用的指紋識(shí)別方式僅存儲(chǔ)指紋上一些特定點(diǎn)的數(shù)據(jù)而非整個(gè)影像，因而相比之下，生物指紋掃描系統(tǒng)更為有效、可靠。