Design And Implementation Of Fingerprint Access Control System Based On DSP

With the development of science and technology, human interaction is more and more frequent, digital identity is more obvious. Traditional authentication technology is based on documents, passwords, keys and other means of identification, these methods cannot distinguish whether the donor is in it, or being replaced, with the rapid development of computer, fingerprint recognition algorithm has been greatly consummated, and the accuracy and computing speed has been greatly improved. Fingerprint identification to access control systems with the development of electronic technology has developed rapidly, followed by that, fingerprint identification is used in access control systems. It can be used not only control the import and export, but also contribute to the internal management of units. We are committed to developing a fingerprint access control system requires that the system is quite stable, and the fingerprint recognition works accurate, strict access control. System is easy to operate and the system must be fine small in order to achieve control in a small environment. I do the following works:The paper conducted a preliminary study on the fingerprint identification system, in the first, paper expounds the research background and its significance, and then describes the usefulness of the paper products. And then described the process of the fingerprint image. Including the normalized pattern calculation, gabor filter to strengthen, binarization processing, thinning processing, As well as the extraction of the eigenvalues of the fingerprint image and the comparing of the two fingers. I used eight prodomain methods to extract the fingerprint eigenvalue. This paper uses point pattern matching algorithm to determine if two fingerprints are from the same finger. Next, paper describes the initial planning of the design steps from both hardware and software. The hardware to ensure the stability of the entire circuit and software to ensure the efficiency of the program work here for a detailed description of the production process of the entire system, Here we do a detailed description of the production process of the whole system, including fingerprint acquisition and processing module, LCD module, keyboard module, clock module, described the system design, We did full consideration of the reflux and other issues that may arise in the stability of the circuited the circuit in the hardware design, and the software design to ensure the efficient running of its program continue to modify and debug. Finally, we describe the hardware production process, including drawing of the system board and production, welding and debugging of system components.The last we successfully completed the package of fingerprint access control system based on DSP and microcontroller products. Extending its electric light, the system is fully functional, with a small size, easy to use, efficient operation, to achieve the desired design requirements for the further development of the fingerprint identification system.