外文翻譯--新型指紋識(shí)別傳感器的應(yīng)用分析-其他專(zhuān)業(yè)-展示頁(yè)
2025-01-31 10:11本頁(yè)面
【正文】 roduction in the Inter safe authentication, the automobile does not have the key to enter the system and so on the application. At present in the market has two kind of solid states fingerprints sensor: The first kind is the single time of touching sensor, requests the finger to carry on reliable touching in the fingerprint gathering area。 The second kind then needs to use the finger to scratch in the sensor surface, the sensor can gather set of specific data, then carries on the fast analysis and the authentication. These two kind of fingerprints sensor will obtain the more and more widespread application. The above two kind of sensors principle of work is: When in the fingerprint bulge partially puts in on the electric capacity picture element electrode, the electric capacity can have the increase, increases the electric capacity through the examination to carry on the data acquisition. In the sensor picture picture element is 45 squares microns, the gap is 50 microns, the electric capacity picture element array resolution is higher than 500dpi slightly. This kind of sensor based on one kind of standard list polycrystalline silicon three metals CMOS craft, and uses microns craft to carry on the design. The metal interlocks the third constitution electric capacity picture element level, is made and is covering nitrided silicon by the titanium nitrides, thickness is only 7,000 Emmy. This kind of rigid metal electrode with anti rubs extremely solid spreads the sensor which the coating bination forms to be durable, the service life may amount to very many years. examination Humanity39。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 t
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