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基于单片机的初级电子密码锁设计


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【内容概述】

基于单片机的初级电子密码锁设计


摘要:随着科技的日益发展,电子密码控制系统已越来越符合人们的要求。本文介绍了基于单片机和串行EEPROM的智能密码控制系统,对系统硬件设计和软件设计进行了详细的描述。该系统采用STC89C52单片机和FM24C02串行EEPROM,通过STC89C52模拟I2C总线和FM24C02通讯,实现密码控制的功能。该系统从经济实用的角度出发,采用美国Atmel公司的单片机STC89C52作为主控芯片与数据存储器单元,结合外围的矩阵键盘输入、LCD液晶显示、报警、开锁等,用C语言编写主控芯片的控制程序与EEPROM读写程序相结合,设计了一款可以多次更改密码,具有报警功能的电子密码控制系统。这种电路设计具有防试探按键输入、智能控制上锁、开锁、报警、修改密码等多种功能。
关键词:密码控制;单片机;EEPROM读写程序;报警

Microcontroller-based Primary Electronic Code Lock Design
 
Abstract:With the increasing development of technology ,Password control system has been more and more in line with the requirements of the people .This article describes the microcontroller and the serial EEPROM-based smart password control system, a detailed description of the system hardware design and software implementation .The system uses the SCM STC89C52 and FM24C02 serial EEPROM, I2C bus and communication FM24C02 by STC89C52 simulation, password control function. Starting from the economical point of view, the use of Atmel's the microcontrollerSTC89C52 as the main chip data memory unit, combined with the external matrix keyboard input, LCD display, alarm, unlock, master chip control program written in C and EEPROM reading and writing program is designed by combining the electronic code control system a many times to change the password, the alarm function. A variable password length, confidentiality, and high flexibility.
Key words:Password control ;microcontroller; EEPROM read and write procedures ;alarm