Embedded Network Fingerprint Attendance System Development

The fingerprint recognition technology is through the computer fingerprintphysiological characteristics inherent in the use of human personal identificationtechnology, is a branch of the development of biometric technology is the most mature.Human fingerprint has a unique and invariance, fingerprint identification has play anactive role in the criminal investigation field, in bank authentication civil areas, thistechnology has broad application space. Fingerprint identification with traditionalmethods such as the use of personal passwords or identity ID, compared with greatersecurity and ease of use.Automated fingerprint system technology embedded TCP/IP-based network,with its easy portability, low power consumption and simple, flexible networking, andother advantages of current the fingerprint hardware platforms research hotspot in thefield. Fingerprint recognition technology and embedded systems combined applicationof fingerprint recognition technology to get rid of the limitations of space and theenvironment, more widely applicable to a variety of occasions, embedded fingerprintsystem in addition to the have the portability and ease of use, scalability of the system.and stability have a greater advantage than the online fingerprint system.In this thesis, the embedded network fingerprint attendance system donepreliminary research, the main job of several aspects of the work:First, the analysis of this topic the research status and development direction of thenecessity of this research. The overall structure and key technologies of the networkfingerprint attendance system.Then, the design of the ARM-based network system of fingerprint identificationterminal hardware, the the terminal hardware system and network transmission serverfingerprint multi-terminal line acquisition and long-distance transmission. Blockdirection Figure fingerprint binarization and the OPTA image template refinement algorithm; ARM9processor core, including storing module, man-machine interactionmodule, communication module terminal hardware system, Linux kernel-basedoperating system cutting and transplantation Bootloader of transplantation, and givesspecific operational procedures.