1602液晶模块数字温度计的设计

文档编号:DZXX364 文档字数:9219,页数:37

摘要
 
 本课题是数字温度计的设计。主要通过18B20数据采集，对数据进行处理，交由显示部分来显示.用protel软件绘制原理图和PCB图，利用单片机C语言编程实现整个电路的功能，用Keil uVision2软件编程调试程序，实现数字温度计的功能。该温度计数字测量温度范围为-55°C～+125°C，在-10～+85°C范围内，精度为±0.5°C。
 本课题设计主要由1602液晶模块作显示，AT89S5单片机模块作程序控制， DS18B20做温度传感模块芯片，实现数字测温。
 本设计所介绍的数字温度计与传统的温度计相比，具有读数方便，测温范围广，测温准确，其输出温度采用数字显示，主要用于对测温比较准确的场所或科研实验室使用。
 
 关键词：Protel, 单片机C语言，Keil uVision2，数字温度计
 
 
Abstract
 
 This topic is the digital thermometer's design. Mainly through the 18B20 data acquisition, carries on processing to the data, hands over demonstrated by the demonstration part. With the protel software plan schematic diagram and the PCB chart, realizes the entire electric circuit's function using the monolithic integrated circuit C language programming, with Keil the uVision2 software programming debugging routine, realizes the digital thermometer's function. This thermometer digital measurement temper range for -55°C~+125°C, in -10~+85°C scope, precision for ±0.5°C.
 The this topic design mainly makes the demonstration by 1602 liquid crystal modules, at89S5 monolithic integrated circuit module makes the programmed control, DS18B20 makes the temperature sensing module chip, realizes the digital temperature measurement.
 This design introduced the digital thermometer and the traditional thermometer compares, has the reading to be convenient, the temperature measurement scope is broad, the temperature measurement is accurate, its output temperature uses the digit to demonstrate, mainly uses to the temperature measurement quite accurate place or the scientific research laboratory use.
 
 Keywords: Protel, Monolithic machine C language, Keil uVision2, Figure thermometer
 

 目录 

摘要 I
ABSTRACT II
目录 III
第1章 绪论 1
 1.1 概述 1
 1.2 系统背景与现状 2
第2章 开发环境和开发工具介绍 3
 2.1 1602液晶模块介绍 3
 2.1.1 技术参数 3
 2.1.2 接口信号说明 3
 2.1.3 外形尺寸 3
 2.2  AT89S51单片机模块介绍 4
 2.2.1 主要性能参数 5
 2.2.2 功能特性概述 6
 2.2.3引脚功能说明 6
 2.3  DS1820数字化温度传感器介绍 8
 2.3.1 DS1820数字化温度传感器简介 8
 2.3.2 DS18B20数字化温度传感器特性 9
 2.3.3 DS18B20的外形和内部结构 9
第3章 硬件电路设计介绍 11
 3.1 电源电路 11
 3.2 液晶1602模块 11
 3.3 温度传感电路 12
 3.4 复位电路 12
 3.5 AT89S51单片机核心控制器 12
第4章 程序设计介绍 15
 4.1 软件设计流程图 15
 4.2 系统初始化 15
 4.3 读传感器温度 17
 4.4 显示温度 23
第5章 结束语 27
致谢 28
参考文献 29
附录 30
 源代码 30

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