基于校园一卡通的门禁系统设计

摘要

An entrance guard system based on the campus card system is introduced to exclude the outsiders, and for the workers to get in and out the door more conveniently. This system uses STC89C52RC as the core, designs related peripheral circuits, and through the card reader gets the campus card number, then decides whether unlock the door by identifying the card information. The communication between the card reader and MCU is realized by Wiegand 26, and it drives a relay by using a triode to control the electronic lock. The card reader also has the password input function , people can open the door by inputting the password or swiping the card. The system can run normally and stably through the actual test, achieve the design requirements successfully, and it has high application value.%针对为排查外来人员，方便本单位人员进出大门的需求，提出了一种基于校园一卡通的门禁系统设计方案，该系统以STC89C52RC单片机为核心，设计相关外围电路，实现对读卡器读取的一卡通卡号信息进行身份识别和验证，从而控制电子锁的开启。其中，读卡器与单片机之间的通信采用Wiegand26协议，对电子锁的控制采用三级管驱动继电器来实现。此外，读卡器还附带密码输入功能，可通过刷卡和输入密码两种方式来实现开门。实验测试表明，该系统运行正常、稳定，完全满足系统设计需求，有较高的应用价值。