大学毕业论文—基于51单片机的温度控制系统设计论文.doc

基于51单片机的温度控制系统 摘 要:其温度稳定在某一个设定值上。基于的系统主要实现了温度采集、A/D转换、温度控制及等功能。 首先，，同时重点介绍了其次，阐述了系统的工作原理，完成了系统结构图的设计，把系统划分为5大模块并完成了各大模块的设计工作，同时附以系统硬件电路原理图。 最后，设计了系统的软件。系统软件是用C语言进行软件设计的，C语言具有指令简单，数据量小等特点。 关键词：温度控制；；Abstract: The temperature control system in industry, agriculture on a wide range of applications, in the contemporary society, the temperature control requirements more and more high, more and more fine. Therefore, we in the school practice choose to complete a basic temperature measurement and project control temperature in a certain range, thus to exercise their abilities. This design uses the monolithic integrated circuit for measuring and controlling temperature, and to control its temperature stability in a certain set of values. Through digital tube display temperature, and has alarm system, through the keyboard input to control the reference temperature and minimum temperature. Basically achieve the purpose of automatic control. The temperature control system of STC89C52 single chip microcomputer is mainly realized the temperature acquisition, A/D conversion, temperature control and alarm functions based on. Secondly, it describes the principle of the system, designed the system structure diagram, the system is divided into 5 major parts and finished the designing of each module, and attached to the system hardware circuit diagram. Finally, the design of the system software. The system software is written in C language for software design, C language has the characteristics of simple instruction, small amount of data. Key Words: temperature control； ； language 目录 1课题要求 5 2总体设计方案 6 2.1系统总体设计 6 2.2单片机选择 6 2.3显示电路选择 7 2.4键盘电路选择 8 2.5 AD电路选择 8 2.6温度采集电路选择 9 2.7控制电路选择 11 3 系统硬件设计 12 3.1系统硬件功能分析 12 3.2单片机最小系统设计 12 3.4温度检测电路设计 14 3.4 AD转换模块设计 15 3.5温度控制系统设计 17 3.6报警模块设计 18 3.7键盘输入模块设计 19 4 系统软件设计 20 4.1主程序分析 20 4.2显示模块分析 20 4.3 AD转换模块分析 20 4.4 键盘输入模块设计 21 4.5报警控制模块设计 22 5 实习结果 23 6 总结与鸣谢 24 参考文献 24 附录1 25 附录2 25