基于单片机的电子门禁系统设计毕业设计论文(C语言程序)精品.doc

基于单片机的门禁系统的设计 摘 要 门禁系统设计上采用单片机作为控制核心，它相当于计算机的，它负责整个系统输入、输出信息的处理和储存控制等等常见的门禁系统有密码门禁系统，非接触禁系统，虹膜掌型门禁系统门禁系统近几年发展很快，被广泛应用于管理控制系统中密码非接触Access Control System Design ABSTRACT Entrance guard system uses 89C52 single chip microcomputer as control core and periphery add a buzzer control circuit, open the door indicator light circuit, control circuit and control lock LCD display circuit, etc. Entrance guard system mainly by the CPU and reset circuit, the power indicative circuit, work instructions circuit, oscillating circuit, a buzzer circuit, door control circuit, go out and lock button reading card module, display module. The entrance guard system uses rf card complete charge take the door, according to credit to go out, and other functions. Its working principle is: when credit, a buzzer rang, such as card to be allowed to access, display module display card number, and at the same time relay action will open the door lock, indicator light, delay after period of time relay action will again only door lock, lights go out. When the press out button, the relay action will open the door lock, indicator light, delay after period of time relay action will again only door lock, lights go out. When the input password, if you input the correct, relay action will open the door lock, indicator light, delay after period of time relay action will lock door lock again. In addition, the program will also increase the rf card authority judgment function, when facing legal card showed the card number, door open, delay 10 s automatically shut off, when meeting the illegal CARDS dont show the card number locks dont open. The system is simple in design, good performance, and has practical value! KEY WORDS: Access Control,?Radio Frequency?Card, Electronically Controlled Lock,?LCD,MCU 毕业设计（论文）原创性声明和使用授权说明 原创性声明 本人郑重承诺：所呈交的毕业设计（论文），是我个人在指导教师的指导下进行的研究工作及取得的成果。尽我所知，除文中特别加以标注和致谢的地方外，不包含其他人或组织已经发表或公布过的研究成果，也不包含我为获得 及其它教育机构的学位或学历而使用过的材料。对本研究提供过帮助和做出过贡献的个人或集体，均已在文中作了明确的说明并表示了谢意。 作 者 签