外文翻譯--新型指紋識別傳感器的應(yīng)用分析-其他專業(yè)-wenkub.com
2025-01-15 10:11 本頁面
【正文】 如果不匹配，則認(rèn)證失敗，等待下次識別。 進行注冊時，信息代碼被存儲下來，作為今后用戶認(rèn)證的參考模板。這些功能的實現(xiàn)具有非常多的用處。不到 一秒鐘，電腦將檢測到的指紋模板與存儲的模板進行比較，并建立一個與駕駛者相符的相關(guān)設(shè)置。有了指紋識別后，便無需使用郵箱密碼或個人識別號碼。手機開機時要求用戶通過一個快速的認(rèn)證過程，用戶將其手指劃過傳感器，如果通過認(rèn)證則授權(quán)使用手機的各項功能。 毫無疑問，便攜式低成本指紋識別技術(shù)對我們的生活意義深遠。 劃擦型傳感器是一種新型指紋采集器件，要求用戶將手指在器件上劃過。 這種傳感器由 256(列 ) 300(行 )微型金屬電極組成，每一列連接到一對 S/H電路上。接觸式傳感器較大，通常有效接觸面為 15 15mm，可迅速地采集最大的指紋或拇指指紋。這種不同的放電率可通過采樣保持 (S/H)電路檢測并轉(zhuǎn)換成一個 8位輸出，這種檢測方法對指紋凸起和低凹具有較高的敏感性，并可形成非常好的原始指紋圖像。這種硬金屬電極與抗磨涂敷層組合形成的傳感器十分堅實耐用，使用壽命可以達到很多年。 上述兩類傳感器工作原理為：當(dāng)指紋中的凸起部分置于傳感電容像素電極上時，電容會有所增加，通過檢測增加的電容來進行數(shù)據(jù)采集。 關(guān)鍵詞 指紋識別 傳感器 應(yīng)用 接觸型傳感器與劃擦型傳感器是兩種新型固態(tài)指紋傳感器，都是通 過在觸摸過程中電容的變化來進行信息采集。s MBF300 size only is mm2) and the cost is low. These ponents mainly use in the mobile equipment inserting the type safe recognition application, like handset and PDA. The precise image reconstruction software by approaches 2,000/A second speed fast gathers many images from the sensor, and anizes each frame data detail to together. and authentication The portable low cost fingerprint recognition technology is without a doubt profound to our life significance. For example, the next police might succeed in the imperial civil service examinations the area in a crime to intercept a suspect, will request it to provide the fingerprint but is not the ID card or the automobile driving license. This person then his/her right hand first, two or the third finger puts in with the wireless PDA connected sensor on, might rapidly carries on the suspect and the before crime recording the contrast confirmation. This kind of recognition technology regarding the handset user which robs is also had the advantage. Handset when requests the user through a fast authentication process, the user to delimit his/her finger the sensor, if through authentication then is authorized uses the handset each function. If is authorized the user, the handset then continues to maintain locks in. If several authentication is unable to pass continuously, then in the hand opportunity deletion memory essential information then . In in pronunciation mail application, after allocates a pronunciation mail number, the user only must delimit the finger the sensor then to be possible to make the system recognition. After had the fingerprint recognition, then does not need to use the mailbox password or the individual identification number. In the next automobile application, the user might input the family member fingerprint sample, will be able to drive after the warning power. Registration process extremely simple: Each authorized driving member puts in his/her finger on the sensor, and carries on automobile each kind
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