下载后可任意编辑目 录摘要·································································· 1引言··································································· 11设计任务与要求 ················································· 22 基础知识介绍··························································· 22.1热释电红外传感器简单介绍············································· 32.2 PIR的原理特性······················································ 32.3 AT89C51单片机简单概述·············································· 33 方案设计··································· 0下载后可任意编辑·························· 43.1总体设计思路 ······················································· 43.2具体电路模块设计 ···················································· 53.2.1 热释电红外传感器原理 ··············································· 53.3 系统硬件电路的选择及说明············································· 73.4 软件的程序实现······················································· 83.4.1主程序工作流程图···················································· 83.4.2中断服务程序工作流程图············································ 94 软件仿真··········...
