文档介绍:温丽华设计
温丽华设计
温丽华设计
太原理工大学阳泉学院
毕业设计说明书
毕业生姓名
:
温丽华
专业
:
电气工程及其自动化
学号
:
060713028
指导教师
:
wider range, high sensitivity, small volume, low power consumption, low cost and suitable for in our daily lives and industrial and agricultural production in the temperature measurement。
The design of the concrete realization of various functions are mainly of two parts from the hardware and software to start. Hardware components: system design features in accordance with the requirements of the modular design of hardware circuits。The master controller AT89C2051 treatment as part of the core of the system. Crystal oscillator circuit for a microcontroller and the hardware circuit display working to provide a unified the operating frequency; reset circuitry ensures system has a fixed initial state; temperature sensor temperature signal can be directly DS18B20 converted into serial digital signals to the MCU; LED display circuit to visually display the results achieved by hardware circuits。 Software components: system design functions according to the requirements of fhe system program includes the main program, subroutine read temperature,the temperatureconversion command subroutine,calculation and display of temperature data refresh subroutine subprogram. This design uses a combination of simple DS18B20 AT89C2051 and the temperature detection system, the system is simple, anti-jamming capability, suitable for harsh environment with field temperature measurements, have wide application。
Keywords:AT89C2051,DS18B20 ,LED digital tube
温丽华设计
温丽华设计
温丽华设计
目 录
摘 要ﻩi
Abstractﻩii
第一章 绪 论 1
第一节 选题的目的和意义ﻩ1
第二节 国内外发展情况ﻩ1
第三节 本设计所研究的内容ﻩ2
第二章 设计方案论证ﻩ3
第三章 系统硬件电路的设计ﻩ4
第一节 测温模块的设计 4
一、温度传感器的选择ﻩ4
二、DS18B20的工作原理ﻩ4
三、DS18B20与单片机的接口电路 8
第二节 控制模块的设计 9
一、控制器的选择 9
二、AT89C2051的主要功能特性ﻩ9
三、AT89C2051的引脚及其功能ﻩ10
四、时钟电路的设计 11
五、复位电路的设计ﻩ12
第三节 显示模块的设计 15
一、显示器的选择ﻩ15
二、LED显示器结构与原理ﻩ15
三、显示电路的设计ﻩ17
第四章 系统软件电路的设计ﻩ20
第一节 主