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1、本科毕业设计（论文）I基于单片机的多机通信在一体化控制系统的应用摘 要目前，在通信领域里，一对一的通讯方式已经远远不能满足人们设计的需要，多机通讯已经成为通讯领域的主流通讯方式。单片机多级通讯是指两台以上单片机组成的网络结构，可以通过串行通讯方式共同实现对某一过程的最终控制。然而，单片机对网络数据的处理方式不同于通用计算机系统，并且功能太过于局限性，在一定程度上阻碍了单片机在控制系统方面的应用。因此，一体化控制系统开始被人们重视。一体化控制是一种全新的工业控制理念，其集成度高，可把动力机构、执行器、计算机和传感器等相互构成一个功能完善自动化系统本设计是一个由单片机构成的温度一体化控制系统，它利
2、用 8051 单片机和DS18B20 等其他器件实现。体现了多机通信的实用性，充分发挥了单片机在实时数据采集和数据管理上的优点以及一体化控制系统的优越性。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。关键词：单片机，无线发送接收，温度控制，LED 显示，定时本科毕业设计（论文）IIMULTI-MACHINE COM
3、MUNICATION IN THE INTEGRATED CONTROL SYSTEMABSTRACTAt present, in the area of communication, one-way communication cannot satisfy the needs of people when they make design. Multi-machine communication has become to the main tools of communications. Single Chip Multi-level communication means one net
4、work structure which composed by more than two SCM. It can control the work through a common serial communication finally. However, the SCM approach on the network data is different from general-purpose computer systems, and functions are too limited, to some extent, hindered the SCM applications in
5、 control systems. Therefore, integrated control systems began to be much attention. Integrated control is a new concept of industrial control, its high integration, can the power sector, actuators, sensors, computers and each other to form a fully functional automated system.What this text introduct
6、ion 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. Reflects the practicality of multi-machine communication, give full play to the MCU in r
7、eal-time data acquisition and data management advantages as well as the advantages of integrated control systems.Temperatures 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
8、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 本科毕业设计（论文）IIItemperature control signal sends into CPU a processing, output control signal throu
9、gh 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 Kong4s device to attain the temperature of desire enactment through the CPU processing.KEY WORDS：microcontroller, wireless transmi
10、ssion and reception, temperature control, LED display, timing本科毕业设计（论文）IV目 录前 言.1第 1 章 概述.21.1 课题的研究目的和意义.21.2 课题背景.31.3 课题来源.4第 2 章 系统方案的总体设计.52.1 系统方案构想.52.2 系统方案的确定.52.2.1 系统控制及数据处理模块方案.52.2.2 传感器方案.62.2.3 短距离无线通信模块方案.72.3 器件的选用.82.3.1 数字式温度传感器的选择.82.3.2 无线收发芯片的选择.92.3.3 键盘显示模块的选择.92.3.4 温度控制模块的选择.10第 3 章 电路的硬件设计.113.1 总体设计方案.113.1.1 多机通信一体化原理.113.1.2 系统总体结构设计.113.2 温度采集部分电路设计.123.2.1 温度数据采集硬件接口电路.123.2.2 数字式温度传感器 DS18B20.133.3 无线收发电路的设计.173.4 单片机的选择.193.5 键盘显示电路的设计.
