毕业设计（论文）-基于AT89S52单片机的的水温水位控制系统设计.doc

摘要
为了实现高精度的水温水位控制,本文介绍了一种以AT89S52单片机为控制核心、以一种新型的可编程温度传感器(DS18B20)为温度采集器件来实现水温水位控制系统。文章着重介绍核心器件的选择、各部分电路及软件的设计。AT89S52单片机完善的内部结构、优良的性能和强大的中断处理能力,决定了该控制系统的特点:电路结构简单、程序简短、系统可靠性高等。加热和制冷由AT89S52单片机控制继电器的通断来实现,以实现自动控制,温度检测采用新型的可编程温度传感器(DS18B20),不需要复杂的信号调理电路和A/D转换电路,能直接与单片机完成数据的采集和处理,采用LCD1602液晶实时显示温度值,实现方便、简单。本系统根据不同需要可用于各种场合。
关键词: 单片机 DS18B20 LCD1602 水温控制
Abstract
In order to realize high precision temperature of the water level control, this paper introduces a kind of AT89S52 SCM in as control core, with a new type of programmable temperature sensor (DS18B20) for temperature gathering device to realize the temperature of the water level control system. This article mainly introduces the core device of choice, each part of the circuit and the software design. AT89S52 SCM perfect internal structure, good performance, and strong interrupt handling ability, decided the control system features: circuit structure is simple, program short, system reliability higher. By heating and refrigeration AT89S52 SCM control relay of the hige to realize, in order to realize the automatic control, temperature testing A new programmable temperature sensor( DS18B20), not in need of sophisticated signal regulate circuit and A/D conversion circuit, can work directly with the single chip plete data acquisition and the treatment, and A LCD1602 liquid crystal display temperature, realize the convenient, simple. This system can be applied to various needs according to different situations.
Keywords:microcontroller DS18B20 LCD1602 control
目录
摘要 I
Abstract II
第一章绪论 1
课题背景 1
课题的目的和意义 1
设计任务及要求 2
本章小结 3
第2章方案论证 4
系统总体方案的选择 4
5
控制器模块论证 5
加热装置有效功率控制模块论证 6
7
键盘与显示模块论证 8
系统各模块的最终方案 8
本章小结 10
第三章主要元器件介绍及硬件电路设计 11
主要元器件介绍 11
温度传感器(DS18B20) 11
主控制器AT89S52 12
LCD1602液晶 15
16
17
17
LCD1602液晶显示电路 18
加热控制电路的设计 18
19
复位电路的设计 19