一种安全的无线门禁系统及其Keil c语言实现

A Safe Wireless Door Access System and the Implementation with Keil C Program

本文使用nRF905实现门禁系统控制信号的无线传输,并使用DS1722产生随机数、IDEA加密后传输、接收非法信号后延时等技术加强系统的安全性能。主要介绍硬件电路、nRF905无线信号传输、IDEA加密算法的实现,并给出了其详细的Keilc程序。

This article uses the nRF905 to realize wireless door access systems.To enhance the safety by using DS1722 for random da- ta, the IDEA encryption arithmetic, delay some time when receive illegal data. The paper main introduces the hardware design, the nRF905 wireless transmission, the IDEA - Algorithm and its detailed Keil c program.