文档介绍：目录
1绪论 1
1
1
2硬件系统设计 2
2
2
3
4
4
DS18B20简介 5
SHT15简介 9
11
11
12
3系统软件设计 13
13
13
16
LCD显示控制模块 18
20
4硬件电路和软件系统的调试 22
22
25
5结论 27
参考文献 28
致谢 29
附录1系统印制电路板 30
附录2程序源代码 31
摘要
温度和湿度的测量在工业、农业、国防等行业有着广泛的应用。使用单片机技术的温度和湿度测量计有体积小,使用性强等优点,在本设计中对LCD数字式温度湿度测量计进行了分析设计。
本论文针对所使用的AT89C51单片机的性能和使用做了比较详细的介绍,对本系统所使用的温度芯片DS18B20和湿度芯片SHT15做了性能方面的简单说明。重点对硬件、软件的组成进行了划分、模块化设计。对各部分的电路一一进行了介绍分析,最终实现了该系统的硬件设计,绘制了电路原理图、印制电路板图。在软件设计方面绘制了各功能模块的流程图,并对需要实现的功能根据设计要求经过反复的模拟运行、调试、修改简化,得出一套完整的软件系统。
关键词:单片机AT89C51、温度传感器DS18B20、湿度传感器SHT15、液晶显示模块LCD1602
Abstract
The test of temperature and moisture has been widely used in industry, agriculture, National defense and so on. By the advantage of small volume and high reliance of Single Chip Micyoco temperature and moisture meter, the article has analyzed and designed the digital temperature and moisture meter in this designing.
This system made detailed introduction about performance and development situation of Single Chip puter AT89C51, and made simple explanation about the temperature chip DS18B20 and humidity chip SHT15. It has mainly analyzed and designed position of hardware and software carried on the item, modulation gradually. This system has introduced part of the electric circuit step by step, and has finally realized the hardware electric circuit of this system. It has protracted the electric circuit principle diagram, the printed circuit board chart. According to the function that must be realized in designing, by repeated simulation run and debugging, it has revised and simplified the software system, and finally has formed a set plete program.
Key words: puter AT89C51; Temperature Sensor DS18B20; Humidity Sensor SHT15; Liquid-Crystal Display LCD1602
1绪论
在我们日常生活和生产中,经常要测量环境的温、湿度,传统