51单片机仓库温湿度的监测系统第一章绪论.......................................................................................................................................................................11.1选题背景..............................................................................................................................................................11．2设计过程及工艺要求...............................................................................................................................................2第二章方案的比较和论证.............................................................................................................................................22.1温度传感器的选择...................................................................................................................................................32.2湿度传感器的选择..................................................................................................................................................32.3信号采集通道的选择..............................................................................................................................................4第三章系统总体设计.....................................................................................................................................................53．1信号采集................................................................................................................................................................53．1．1温度传感器.................................................................................................................................................53.1.2湿度传感器...................................................................................................................................................93．1．3多路开关......................................................................................................................................................113．2信号分析与处理..................................................................................................................................................133．2．1A/D转换....................................................................................................................................................133.2.2单片机8031......................................................................................................................................................163.2.2.18031的片内结构..................................................................................................................................163.2.2.28031的引脚图.............................................................................................................................................183.2.2.38031程序存储器..................................................................................................................................193.2.2.48031数据存储器..................................................................................................................................203.2.2.5特殊功能寄存器SFR............................................................................................................................203.2.2.6工作方式.............
