Computer Data Acquisition And Product Safety, Digital Management System

Biometric recognition technique, which is represented by fingerprint recognition technique, will be used more and more widely in many fields. At the same time, fingerprint recognition technique will play a dominant role in identity recognition.Eventually it will become an indispensable part of our daily life. Therefore, studies on the theory and application of fingerprint recognition have significant meaning in both theory and application. Fingerprint recognition has become a research focus in the field of identity verification recently.Because of its unique characteristics and advantages in many aspects, considering the state that fingerprint recognition technique has developed to a relatively stable extent at present, the biometric recognition technique based on fingerprint is applied to the computer aided management system for workshops, and a fingerprint recognition module is developed in this dissertation. By integrating with the data acquisition module developed at the earlier stage, the two modules form the data acquisition sub-system, which enhances the reliability of data input.At the early stage, we design the whole system framework, select suitable hardware for each function module. Then, the data acquisition module and fingerprint recognition module are developed in detail.The data acquisition module, with friendly man-machine interface and easy to operate, is developed by making full use of the resources within the single-chip. The fingerprint recognition module with good control interface is realized by taking good use of the software development kit. The module can drive the fingerprint reader to get fingerprint images, realize fingerprint matching.In chapter two of this dissertation, the fingerprint recognition technique is introduced, the development of fingerprint recognition, current situation, and the future is described; the basic principle of the fingerprint recognition technique is analyzed in detail; the outstanding thinning algorithm and matching algorithm in the field of fingerprint recognition and narrated.In chapter three, the design plan and the whole framework of the computer aided...