基于单片机的数字密码锁设计(论文).doc

基于单片机设计的数字密码锁设计 摘要 在现代社会，电子密码锁是一种通过密码输入来控制电路或是芯片工作，从而控制机械开关的闭合，完成开锁、闭锁任务的电子。AT89C51作为密码锁监控装置的检测和控制核心，它是一种通过密码输入来控制电路或是芯片工作，完成开锁、任务。AT89C51；单片机设计；密码锁；控制电路； The digital combination lock design based on single chip microcomputer Abstract In the modern society, the electronic lock is not a strange noun. This paper will introduce an electronic lock, which is through the password input to control circuit or chips work, so as to control the closing or open of the mechanical switch, complete the lock that the task of electronic lock locking device. Electronic lock, due to its high secrecy, good flexibility of use, high safety coefficient, is liked by the majority of customers. The design on the single chip computer AT89C51 as a combination lock monitoring device of the detection and control the core, it is a kind of through the password input to control circuit or chips work, using the keyboard, and password changing, password detection, the lock circuit, executive circuit, alarm circuit, keyboard input frequency circuit to complete the lock, locking closure such tasks. Using password is correct recognition to replace or call the police. Through the keyboard input number to realize the keyboard to lock the record. The keyboard input electronic lock has higher advantage. Adopting digital signal encoding and secondary modulation mode, not only can achieve more road information control and improve the signal transmission of anti-jamming, reduce the wrong action, but also power consumption is low; Reaction speed is high,；and it is high transmission efficiency； it is stable on working，and so on. The software design uses top-down idea of modular design, which is in order to make the system be distributed, miniaturization, direction, and enhance the system configuration and the stability of the operation. In this paper，the design is high security locks, low cost, low power consumption, easy operation, etc. Keywords: AT89C51; The SCM design; Combination lock; Control circuit; 第一