at89s52单片机的温度湿度计论文.doc

基于AT89S52单片机的温度湿度计的设计

目  录
1 绪论 2
1.1  问题的提出与意义 2
1.2  国内外的发展现状 2
1.3  研究的目的与方向 2
2 设计分析 3
2.1  设计方案 3
2.2  系统组成 3
2.3  工作原理 4
3 总体设计 4
3.1  主要器件简介 4
3.2  主要电路模块 6
3.3  软件设计编程 8
4 调试 13
结束语 14
致谢 14
参考文献 14
附录 16

 
基于AT89S52单片机的温度湿度计的设计
摘要：采用MSC-51系列单片机中的AT89S51和温湿度传感器DHT11的低成本设计温湿度的检测系统。由DHT11温湿度传感器及LCD1602字符型液晶模块构成系统显示模块，该系统电路简单、工作稳定、集成度高、调试方便、测量精准度高，具有一定的实用价值与意义。其中测温湿度监测电路由温湿度传感器和预设温度值比较报警电路组成，用户根据需要预先输入预设值，当实际测量的温湿度大于预设的温湿度数值时，发出报警信号（蜂鸣器蜂鸣）。
关键词：单片机; 温湿度传感器; 温湿度检测系统; AT89S52; DHT11

Based on the Design of Temperature Humidity Indicator of AT89S52 Singlechip
Wang Wei
（Department of Electronic Information Engineering  Supervisor: Shen Wenlong）
Abstract:This design is the use of MSC-51 Series MCU AT89S51 and DHT11 in the low-cost temperature and humidity detection system.The DHT11 temperature and humidity sensor and 1602 constitute a system of character LCD module display module, the system circuit is simple, stable, high level of integration, commissioning convenient, accurate, has some practical value and significance. Temperature and humidity Monitor circuit in which the temperature and humidity sensors and compare the value of the preset temperature alarm circuit, the user input required pre-default value, when the actual temperature and humidity measurements of temperature and humidity is greater than the preset value, an alarm signal (bee Buzzer beep).
Keywords: microcontroller; temperature and humidity sensor; detection system; AT89S52; DHT11