多点式单总线数字温度监测系统(完整程序)

I摘要本课题主要介绍基于AT89C51单片机和DS18B20数字温度传感器的多点温度测量系统。该系统利用AT89C51单片机分别采集各个温度点的温度，实现温度显示、报警等功能。它以AT89C51单片机为主控制芯片,采用数字温度传感器DS18B20实现多路温度的检测,测量精度可以达到0.5℃。该系统采用了LCD1602A液晶显示模块，LCD1602A作为显示器,形象直观的显示测出的温度值。本文首先在绪论中介绍了此系统的背景以及功能。第二章确定设计方案。在第三章论述了总体的设计过程，确定了技术指标及器件的选择并且描述了系统硬件电路设计、硬件设计框图及所使用的各种芯片功能与特性。第四章重点剖析了软件设计的过程。最后一章中具体论述了系统的调试软件及调试中出现的问题。基于AT89C51单片机的单总线多点温度测控系统具有硬件组成简单、多点温度检测、读数方便、精度高、测温范围广等特点，在实际工程中得到广泛应用。关键词：数字温度传感器，AT89C51单片机，单总线IIAbstractTheproblemintroducesAT89C51monolithicmachineandtheDS18B20figuretemperaturesensor-basedmultiplespottemperaturemeasurementsystemmainly.AT89C51singlechipusingthesystemwerecollectedatvarioustemperaturesofthetemperature,temperaturedisplayandalarmfunctions.ItAT89C51MCU-basedcontrolchip,digitaltemperaturesensorDS18B20therealizationofmulti-channeltemperaturedetection,measurementaccuracycanreach0.5℃.ThesystemusesLCD1602Aliquidcrystaldisplaymodules,LCD1602Aasadisplay,thedisplayofvisualimagestomeasurethetemperature.Thisarticlefirstdescribedintheintroductionofthissystem,aswellasbackgroundfeatures.Thesecondchaptertodeterminethedesign.Inthethirdchapterdiscussestheoveralldesignprocesstodeterminethetechnicalspecificationsandthechoiceofdevicesandadescriptionofthehardwarecircuitdesign,hardwaredesignanddiagramusedinavarietyoffeaturesandfunctionsofthechip.ChapterIVanalyzesthekeysoftwaredesignprocess.Thefinalchapterdiscussesthespecificsystemdebugginganddebugsoftwareproblems.AT89C51singlechipbasedonsingle-busmulti-pointtemperaturemeasurementandcontrolsystemwithsimplehardwarecomponents,multi-pointtemperature,easyreading,high-accuracy,widetemperaturerange,andothercharacteristicsoftheactualprojectsarewidelyusedKeywords：digitaltemperaturesensor,AT89C51singlechip,single-busIII目录摘要...............................................................................................................................IABSTRACT.................................................................................................................II第1章绪论.................................................................................................................1第2章系统方案设计.................................................................................................22.1方案设计.............................................................................................................22.1.1方案一利用单总线数字传感器实现小环境温度监测系统.....................22.1.2方案二利用模拟温度传感器实现小环境温度监测系统.........................22.1.3方案三利用PLC实现小环境温度监测系统.............................................32.2设计方案.............................................................................................................3第3章系统设计.........................................................................................................43.1工作原理..............................................................................................................43.2单元电路设计.....................................................................................................43.2.1DS18B20与单片机接口电路设计..............................................................43.2.2显示电路设计............................................................................................12第4章系统软件设计.................................................................................................14.1软件设计总体思路及主程序流程图.................................................................14.2测温模块流程图.................................................................................................14.2.1温度的采集.................................................................................................14.2.2多点温度的采集...........................................................................................24.3显示模块流程图.................................................................................................34.4参照流程图编写程序.........................................................................................4第5章元器件安装及调试.........................................................................................65.1系统调试与仿真..................................................................错误!未定义书签。5.1.1测试环境及工具..........................................................................................15.1.2调试和仿真结果............................................................................................15.2元器件安装..........................................................................错误!未定义书签。总结...............................................................................................................................2参考资料.......................................................................................................................3致谢...............................................................................................................................4附录一...........................................................................................................................5附录二...........................................................................................................................61第1章绪论21世纪，科学技术的发展日新月异，科