仓库温湿度监测系统毕业设计

仓库温湿度监测系统

摘 要

在电子科技的快速发展的同时，诞生于集成电路技术的单片机系统应用越来越广泛。单片机的发展，促进了工业测控领域的发展，其中对于仓库温湿度的监测要求不断增高。那么，由原始的人工监测仓库温湿度方法已经慢慢发展到利用单片机实现自动监测。

本文主要介绍基于单片机的仓库温湿度监测的相关系统的硬件和软件设计内容。系统设计结构简单、实用，相比传统监测方法，在监测精度这一方面大幅度被提升，节省了人力物力与时间。

关键词 ：STC89C51单片机；温湿度；DS18B20；HS1101

Warehouse temperature and humidity monitoring system

ABSTRACT

With the development of electronic technology, with the development of very large scale integrated circuit technology and the birth of the single chip microcomputer application system is more and more widely.MCU development, promote the development in the field of industrial measurement and control, including for increasing monitoring requirement of temperature and humidity in the warehouse.So, from the original manual monitoring warehouse temperature and humidity using single chip computer to realize automatic monitoring has become possible.This paper mainly introduces the related warehouse temperature and humidity monitoring system based on single chip microcomputer hardware and software design of the content.System structure is simple and practical, and improves the measuring precision and efficiency.

KEYWORD: STC89C51;Temperature and humidity；DS18B20；HS1101

目录

前言 .............................................................................. 1 第一章 绪论 ....................................................................... 2

1.1课题的提出及意义 .......................................................... 2 1.2国内外现状及发展趋势 ...................................................... 2 第二章 温湿度监测系统的方案确定 ................................................... 4

2.1设计要求 .................................................................. 4 2.2系统总体方案设计 .......................................................... 4

2.2.1 控制芯片AT89C51单片机 .............................................. 5 2.2.3 湿度传感器 .......................................................... 9 2.3 系统设计方案的工作原理 ................................................... 11 第三章 系统硬件电路及原理图设计 .................................................. 12

3.1 中心系统设计 ............................................................. 12

3.1.1复位电路 ........................................................... 12 3.1.2时钟电路 ........................................................... 13 3.2液晶显示电路设计 ......................................................... 14 3.3温湿度监测系统的电路设计 ................................................. 14

3.3.1温度测控系统电路设计 ............................................... 15 3.3.2湿度测控系统电路设计 ............................................... 15 3.4 键盘电路设计 ............................................................. 16 3.5 报警电路设计 ............................................................. 17 3.6系统总电路 ............................................................... 18 第四章 系统软件设计 .............................................................. 19

4.1使用的开发工具 ........................................................... 19

4.1.1 Proteus ............................................................ 19 4.1.2 Keil C51 编译器简介 ................................................ 20 4.2软件程序 ................................................................. 21 4.3 系统仿真图 ............................................................... 22 小 结 ......................................................................... 23 参考文献 ......................................................................... 24 致 谢 ......................................................................... 25 附 件 ......................................................................... 25