用单片机进行温度的控制及LCD显示系统的设计

论文编号:JD909 附开题报告，任务书。  论文字数:14253,页数:45

摘 要

 温度测量与控制是工程实践中常见的问题,在工业生产中有着广泛的应用。针对此领域的发展方向，本论文设计了一个基于单片机的智能温度测量系统。本系统以AT89C51单片机为微控制器，采用数字温度传感器DS18B20作为测温元件, 温度传感器DS18B20采集温度信号送给单片机处理，单片机再把处理后的温度数据送到LCD上显示出来。 能够实现快速、准确的测温功能和越限声光报警功能。本论文完成了系统硬件电路的设计，给出了软件流程框图，并编写了相关的软件程序。     关键词：温度测量；传感器 ；单片机；LCD显示 
 
          
 
 
Abstract
 
 Temperature measuring and the controlling are very common in the project practice and are widely adopted in the industry production . In view of development direction of this domain, this paper introduces a temperature measuring system which take the  AT89C51 single chip microcontroller as an controlling unit and the digital temperature sensor --DS18B20, as temperauture measuring transducer. The collected temperature signals of the digital temperature transducer--DS18B20 are processed by the single chip microcontroller. The processed temperature signals are displayed on the LCD.This system has achieved prompt and precise temperature measuring and the super warnning function by sound and light .This paper has finished the design of hardware curcuit and compiled related software program..
 
 Key word: Temperature measuring；Sensor；Single Chip Microcontroller ；LCD Display

目  录

摘     要 I
Abstract II
绪 论 1
1系统的设计方案 3
2硬件设计
2.1  单片机的选用 4
2.2  温度检测电路的设计 6
2.3  键盘模块的设计 10
2.4  液晶显示模块的设计 12
2.5  声光报警电路的设计 16
3软件设计
3.1  程序设计语言和软件开发环境 17
3.2  软件程序设计 18
4抗干扰设计
4.1. 硬件方面的措施 26
4.2  软件抗干扰技术 26
结  论 28
致   谢 29
参考文献 30
附录： 源程序 31