基于nrf24l01无线收发模块的无线输入密码锁的设计.doc

毕业设计(论文)小区智能密码锁设计小区智能密码锁设计摘 要随着科学技术的不断发展，人们对日常生活中的安全保险器件的要求越来越高。为满足人们对锁的使用要求，增加其安全性，用密码代替钥匙的密码锁应运而生。密码锁具具有安全性高、成本低、功耗低、易操作等优点。本次设计使用STC89C52单片机为主体芯片，采用AT24C02为掉电存储芯片。设计了一款可以多次修改密码、具有密码错误报警功能和无线开锁功能的无线遥控密码锁。本系统主要包括：矩阵键盘输入模块、LCD液晶显示模块、错误报警模块、掉电存储模块，无线开锁模块，所采用的编程语言是C语言。整机电路稳定性高，成本低，还能扩展很多功能。关键词：STC89C52；AT24C02； 电子密码锁；矩阵键盘 ；掉电保护；无线收发 The Design of Residential Intelligent Cipher LockAbstractWith the continuous development of science and technology, peoples demands for safe and secured devices increase highly in daily life. In order to meet the requirements of the lock and to increase the security of it, the key with passwords instead of the lock comes into being. The key with passwords has the advantage of safety, low cost, low power consumption and easy operation.The design use STC89C52 MCU for the main chip and AT24C02 chip for storage of the power-down. A wireless remote control lock was designed, which can repeatedly change the password, also enjoy password error alarm functions and wireless unlock function. The system includes: matrix keyboard input module, LCD display module, error alarm modules, power-down memory module, wireless input module. The programming language adopted is C language. The whole circuit not only pocesses high stability and low cost, but also extends a lot of functions.Keywords: STC89C52; AT24C02; Electronic code lock; Matrix keyboard; Power-off protection; Wireless transceiver 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc324155324 1 绪 论 PAGEREF _Toc324155324 \h 1 HYPERLINK \l _Toc324155325 1.1 项目背景 PAGEREF _Toc324155325 \h 1 HYPERLINK \l _Toc324155326 1.2 项目的主要任务 PAGEREF _Toc324155326 \h 1 HYPERLINK \l _Toc324155327 2 方案论证 PAGEREF _Toc324155327 \h 3 HYPERLINK \l _Toc324155328 2.1 主控芯片的选择 PAGEREF _Toc324155328 \h 3 HYPERLINK \l _Toc324155329 2.2 无线模块的选择 PAGEREF _Toc324155329 \h 3 HYPERLINK \l _Toc324155330 2.3 键盘的选择 PAGEREF _Toc324155330 \h 3 HYPERLINK \l _Toc324155331 2.4 液晶模块的选择 PAGEREF _Toc324155331 \h 3 HYPERLINK \l _Toc324155332