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摘 要
本文介绍的是一个由单片机构成的无线温度控制系统，它利用8051单片机和DS18B20及数码管等其他器件实现。温度测量部分工作原理是单片机利用DS18B20对温度进行采集，然后进行无线发送，接收端收到信号后，进行解码，之后实现温度显示。温度控制部分工作原理是由键盘输入欲设定的温度。温度控制信号送入CPU处理，通过PID算法输出控制信号，经无线收发电路发射出去，接受端收到信号经CPU处理控制半导体温控装置达到欲设定的温度。本文对硬件和软件进行了框图设计，protel原理图设计，程序框图设计，源程序设计，文后附录了完整源程序。
关键词：单片机，无线发送接收，温度控制，LED显示，定时
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Abstract
What this text introduction is a constitutes to from the single slice machine of wireless temperature control system, it make use of 8051 single slice machine and other spare part realizations such as the DS18 B20 and figures tube etc..Temperature's measuring a part work principle is a single slice machine to make use of the DS18 B20 rightness temperatures to carry on collect, then carry on a wireless to send out, carry on a decoding after receiving to carry to receive signal, after carry out a temperature manifestation.Temperature control part work principle from keyboard importation desire enactment of temperature.The temperature control signal sends into CPU a processing, output control signal through a PID calculate way, Be received and dispatch electric circuit blast-off to go out by wireless and accept to carry to receive signal to control the semi-conductor Wen Kong4's device to attain the temperature of desire enactment through the CPU processing.This text carried on frame diagram a design to the hardware and the software, the protel principle diagram design, procedure frame the diagram design, source program design, text after appendix complete source procedure.
Key words: microcontroller, wireless transmission and reception, temperature control, LED display, timing
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目 录
摘 要 ...................................................................................................................................................... I ABSTRACT .......................................................................................................................................... II 目 录 ................................................................................................................................................... III 第一章 引 言 ...................................................................................................................................... 1
1.1 课题的研究目的和意义 .......................................... 1 1.2 课题背景 ...................................................... 2 1.3 课题来源 ...................................................... 3 1.4 短距离无线通信技术的现状与发展趋势 ............................ 3 1.5 本章小结 ...................................................... 5
第二章 系统方案的总体设计 ................................................................................................................ 6
2.1 系统方案构想 .................................................. 6 2.2 系统方案的确定 ................................................ 6 2.2.1 传感器方案 ................................................ 6 2.2.2 短距离无线通信模块方案 .................................... 7 2.2.3 系统控制及数据处理模块方案 ................................ 8 2.3 器件的选用 .................................................... 9 2.3.1 数字式温度传感器的选择 .................................... 9 2.3.2 无线收发芯片的选择 ....................................... 11 2.3.3 键盘显示模块的选择[21] ................................... 13 2.3.4 温度控制模块的选择 ....................................... 13 2.4 本章小结 ..................................................... 14
第三章 电路的硬件设计 ...................................................................................................................... 15
3.1 温度采集部分电路设计 ......................................... 15 3.1.1 温度数据采集硬件接口电路 ................................. 15 3.1.2 数字式温度传感器 DS18B20 ................................. 16 3.2 无线收发电路的设计 ........................................... 21 3.2.1 nRF401芯片的介绍[15] .................................... 21 3.2.2 典型应用电路说明 ......................................... 21 3.3 单片机的选择 ................................................. 24
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由单片机构成的无线温度控制系统毕业设计
