基于单片机的指纹识别电子密码锁设计

Design of Fingerprint Identification Electronic Lock Based on Microcontrollers

本设计以51单片机作为指纹识别电子密码锁的检测和控制核心,采用矩阵键盘输入设置好的密码和利用事先添加的指纹两种解锁方式。系统采用LCD12864液晶显示屏实时显示通过矩阵键盘实现的功能信息,其中还设置了修改密码的功能,同时在解锁或修改原始密码时发现自己不小心按错,可以进行退格操作;尤其发现旁边有其他人或者不想输入密码可以进行退出输入,更大程度上的确保了指纹密码锁的安全性。

In this design,51 microcontroller is used as the detection and control core of fingerprint identification electronic combination lock.Matrix keyboard is used to input the set password and pre-added fingerprint are used to unlock the lock.The system uses LCD12864 liquid crystal display screen to display the function information realized by matrix keyboard in real time,in which the function of modifying password is also set.At the same time,if you accidentally find that you pressed the wrong key when unlocking or modifying the original password.You can carry out backspace operation.If there are other people or you don’t want to enter the password,the exit input can be carried out,thus ensuring the security of the fingerprint combination lock to a greater extent.