指纹模块是指纹锁的核心部件，安装在如指纹门禁或者硬盘等器件上， 用来完成指纹的采集和指纹的识别的模块。指纹模块主要由指纹采集模块、指纹识别模块和扩展功能模块（如锁具驱动模块）组成。
文中介绍了系统各部分的组成，包括系统构成，硬件构成与设计。并针对嵌入式指纹模块设计要求性能可靠、体积小、耗电少等问题，提出了行之有效的解决方案。
The system structure including hardware architecture and design, high performance requirement and some difficult problems are also discussed. Some good resolution are given in the article.
该系统包括指纹采集、指纹识别和指纹验证三个模块。
This system includes three modules: fingerprint collection, fingerprint identification and fingerprint verification.
指纹识别模块包括指纹图像的预处理，特征提取，分类，匹配以及指纹库的建立。
Fingerprint identification module includes the preprocessing of fingerprint, feature extraction, the classing of fingerprint as well as matching, the establishment of fingerprint storehouse.
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