基于MSP430单片机的智能门锁控制系统设计终稿.doc

基于MSP430单片机的智能门锁控制系统的设计 摘要：随着科技的进步，以单片机为核心的自动门锁控制系统已经开始进入了人们的生活。本论文着重阐述了以msp430单片机为核心，通过并行接口直接控制LCD液晶显示器模块及键盘扫描，并与接触式IC卡读写技术相结合的系统。为保证门锁使用的安全性，系统自动比较IC卡密码和用户输入密码，若输入的密码与系统读出的IC卡密码相同，门锁自动开启；若连续输入三次错误的密码，系统自动停止此卡的使用，并及时将报警信号通过RS-485串行通信总线传往主控台。本设计的优点是硬件电路简单，软件功能完善，控制系统可靠，具有一定的实用价值。该系统拓展后，可用于其他智能家电的控制，具有好的应用前景。 关键词：MSP430单片机，接触式IC卡，LCD显示器，电子门锁 The hardware design and realization of IC card electronic door locks controlling system Abstract：With the progress of technology, the automatic door locks control system which takes the the Single Micro Chip Computer as the core is stepping into peoples lives. This paper focuses on the system which takes the series Single Micro Chip Computer msp430 as the core, which controls Liquid Crystal Display modules and keyboard scanning through the control chip directly, and contacts the IC card read-write technology. In order to guarantee the security of the door locks use, the system design offers an comparision between the IC card password and the password which the user input. If inputed password and the IC card password read out on the system read-out are same, the door lock will be opened automaticly. If you input wrong password three times continuously, the system will automatically stop the use of the card, and the alarm will be transmited to the key station promptly through the RS-485 serial telecommunications bus st-bus. The advantage of this design is simple in the hardware circuits, software functional improvements, the control system′s reliablily, and has certain practical. After this system is developed, it can be used in other intelligent electrical appliances control and has a good application prospect. Key words : MSP430 Single Chip Micro Computer, IC cards, Liquid Crystal Display, Electronic door locks 一 系统分析 （一） 系统研究的可行性 任何系统在开发之前，都要进行可行性分析来确定项目开发是否有必要和可行。必须分析几种主要可能解法的利弊，从而判断原定的系统规模和目标是否能现实，系统完成后所能带来的效益是否大到值得投资开发。因此，可行性研究实质上是要进行一次大大压缩简化了的系统分析和设计的过程，也就是在较高层次上以较抽象的方式进行的系统分析和设计的过程。 首先需要进一步分析和澄清问题定义，在问题定义阶段初步确定规