摘要
用电子密码锁代替传统的机械式密码锁,能克服机械式密码锁密码量少、安全性能差的缺点。因此研究和开发保密性能高的电子密码锁电路就成为现实的迫切需求。为此设计了门禁系统密码锁控制电路,采用单片机STC89C52与E2PROM AT24C02作为控制芯片与密码存储器,结合键盘输入电路、LCD12864显示模块、声光报警电路、开锁控制等电路,用C语言编写主控芯片的控制程序,完成密码的写入与存储修改功能。该电路能够多次更改密码并具有报警功能。试验结果表明该电路能够满足密码锁控制要求,并具有系统功能实用,成本较低等特点,有一定的实际应用价值。
To replace the traditional mechanical cipher lock with electronic password lock can overcome less code of the mechanical lock and poor confidentiality.Therefore,the research and development of high security electronic password lock circuit is the urgent need of the reality.In order to design access control circuit system of password lock.microcontroller STC89C52 and E2PROM AT24C02 are used as the master chip and the data memory unit,combined with the external keyboard input circuit,LCD12864 display module,sound and light alarm circuit as well as unlock circuit,the control program of the master chip is compiled with C language to complete the function of writing password,storing and modifying.The circuit can change the password several times and has an alarm function.The experimental results show that the circuit can satisfy the password lock control requirements with characteristics of practical application and low cost.
出处
《机械设计与制造》
北大核心
2012年第8期40-42,共3页
Machinery Design & Manufacture
基金
海南省教育厅项目-‘三位一体’的农机化人才综合能力和创新意识培养模式的研究(2007-11)
海南大学校基金项目-海南大学农业机械化工程学科研究生创新能力的研究(2011-7)
关键词
密码锁
门禁系统
Password Lock
Access Control System
