基于51单片机的多路温度采集控制系统

论文编号:JD022    字数:22089,页数:61

摘  要

    随着现代信息技术的飞速发展，温度测量控制系统在工业、农业及人们的日常生活中扮演着一个越来越重要的角色，它对人们的生活具有很大的影响，所以温度采集控制系统的设计与研究有十分重要的意义。本次设计的目的在于学习与了解嵌入式系统开发的基本流程。本设计采用单片机作为数据处理与控制单元，为了进行数据处理，单片机控制数字温度传感器，把温度信号通过单总线从数字温度传感器传递到单片机上。单片机数据处理之后，发出控制信息改变报警和控制执行模块的状态，同时将当前温度信息发送到LCD进行显示。本系统可以实现多路温度信号采集与显示，可以使用按键来设置温度限定值，通过进行温度数据的运算处理，发出控制信号达到控制蜂鸣器和继电器的目的。

关键词：嵌入式系统；多路温度采集；驱动电路

The Design of Multi-channel Temperature Acquisition and Control System Based on 51 MCU

Abstract：Along with the rapid development of modern information technology, temperature measuring and control system become more and more important in industrial, agriculture and daily life. Because of its great influence on people’s life, design and research of temperature acquisition and control system has a great significance. The purpose of this design is learning and understanding the development of embedded systems. It uses MCU as data process and control unit, and uses MCU to control digital temperature sensor which transmits data to MCU through single bus. It can send a signal to change the states of alarm and implementation module, current temperature is displayed by LCD. The system achieves multi-channel temperature signal acquisition and control. Temperature limit is set by keyboard. The buzzer and relay are controlled by MCU.

Key words：Embedded system, Multi-channel temperature acquisition, Driver circuit

目  录

第1章 绪  论................................................1
1.1 课题背景................................................1
1.2 温度检测的意义与技术发展.............................  .1
1.3 课题内容和本人的主要工作 .............................. 2
第2章 系统总体设计及方案论证................................3
2.1 系统总体设计........................................... 3
2.2 单片机 .................................................4
2.3 温度采集与传感器 .......................................4
2.4 人机交互与串口通信 .................................... 6
第3章 硬件设计 .............................................8
3.1 系统结构框图 ...........................................8
3.2 单片机主控单元 ........................................ 8
3.3 温度信号采集单元 .......................................11
3.4 人机交互与串口通信单元设计 .............................14
3.4.1   键盘输入............................................15
3.4.2   液晶显示屏输出......................................16
3.4.3   串口通信 ...........................................17
3.5 电源系统设计 ...........................................18
3.6 控制执行单元设计........................................19
3.7 总体电路原理图及印刷电路板图............................20
第4章 软件设计..............................................21
4.1 设计思路、流程图 .......................................21
4.2 温度采集子程序 .........................................22
4.2.1   命令序列 ...........................................23
4.2.2   信号方式 ...........................................24
4.3 数据处理子程序 ........................................ 26
4.4 人机交互子程序..........................................27
4.4.1   显示子程序 .........................................28
4.4.2   按键子程序 .........................................29
4.5 执行子程序 .............................................31
第5章 系统调试分析 .........................................32
5.1 硬件调试............................................... 32
5.2 软件调试 ...............................................33
5.3 整机调试................................................34
结  论..................................................... 36
致  谢......................................................37
参考文献 ...................................................38
附录1 ..................................................... 40
附录2 ......................................................41
附录3 ......................................................42
附录4 ......................................................43
附录5 ......................................................44