时空密码电子门铃.doc

ABSTRACT 摘要 PAGE II PAGE I 摘要 门铃是人们生活中的常用物品，本题要求用电子器件设计制作一个密码门铃的控制电路，使之输入正确的代码时，输出锁信号以推动执行机构动作，并 用电磁阀开启及绿色发光二极管发亮来表示开锁。 本文的电子密码门铃利用数字逻辑电路，实现对门的电子控制，并且有各种附加电路保证电路能够安全工作，具有极高的安全系数。 随着人们生活水平的提高，如何实现家庭防盗这一问题也变的尤其的突出，传统的机械锁由于其构造的简单，被撬的事件屡见不鲜，电子锁由于其保密性高，使用灵活性好，安全系数高，受到了广大用户的亲昵。  设计本课题时构思了两种方案：一种是用以AT89C2051为核心的单片机控制方案；另一种是用以74LS112双JK触发器构成的数字逻辑电路控制方案。考虑到单片机方案原理复杂，而且调试较为繁琐，所以本文采用后一种方案 Abstract ABSTRACT The door bell is people life medium of in common use product, subject request use an electronics spare part a design creation a password door bell of control electric circuit, make of importation exactitude of code, output lock signal with push performance organization action, and Open with the electromagnetism valve and the green give out light diode to become bright to mean to open a lock. The textual electronics password door bell make use of numeral logic electric circuit, realization the opposite door of electronics control, and have various additional electric circuit assurance electric circuit can safety work, have very Gao of safety coefficient. Along with people life level of exaltation, how realization the family guard against theft this problem also change of particularly outstanding, tradition of machine lock because of it structure of simple, is pry of the affairs often see not fresh, electronics lock because of its confidentiality Gao, use vivid good, safety coefficient Gao, was subjected to a large customer of very intimate. Design origin topic conceived outline two kinds of project:1 kind is in order to the AT89 C2051 is the list slice of the core machine control project;Another is in order to 74 LS112 pair the JK trigger a machine constitute of numeral logic electric circuit control project.In consideration of list slice the machine project principle complications, and adjust to try more tedious, so this literary grace use behind a kind of project 目录 目录 目录 TOC \o 1-3 \h \