The Electronic Lock of Fingerprint Identification

Abstract

Biometrics is more and more widely used in the security system, with the current realistic needs as a starting point, a microcontroller-based fingerprint identification electronic lock design method is proposed to realize the transformation from the traditional security system door locks to the new fingerprint identification electronic locks. This design uses the matrix keyboard to enter the password and fingerprint to unlock the door in two ways: Through the fingerprint module to collect fingerprints; stm32 microcontroller as the main control module of the fingerprint identification electronic lock, the fingerprints collected by the AS608 fingerprint module and the fingerprints in the memory of the microcontroller will be compared, and the results will be displayed on the screen, the comparison is successful to open the lock, and vice versa does not open the lock. Through the 4x4 matrix keyboard to realize the password unlocking; stm32 microcontroller as the main control module of the fingerprint identification electronic lock, the password entered on the matrix keyboard and the password in the memory of the microcontroller will be compared, and the unlocking result will be displayed on the screen. This design has the advantages of small size, high cost-effectiveness and reliable safety factor. The overall test results of the system show that the fingerprint identification electronic lock functions normally, and the functional modules work stably, realizing the basic functions that the fingerprint identification electronic lock has, which can be used for door locks and other various devices that need security locks.