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编号：课程设计基于LMTARM-V试验平台的电子密码器的设计与实现院系：信息工程学院姓名：张华伟学号：1234130130专业：电子信息工程年级：2012级指导教师：巫廷耀职称：工程师完成日期：2016年5月I摘要温控系统在人们生活中随处可见，在生物制药、冶金、医疗等领域扮演着非常重要的角色，已经成为人们生活不可或缺的一部分。它是一个集环境监测、反馈调节和人机交互的等功能的综合系统。它是能实现实时环境温度数据采集，经过相应的判断处理、计算来控制设备的运行以达到理想温度的系统，其应用范围非常广泛。如今，由于ARM构架设计的温控系统拥有稳定性和抗干扰性以及高运算速率等优点，一直受广大电子设备控制系统开发人员的青睐。本设计采用ARM单片机技术、PT100铂电阻温度传感器技术、单片机技术等来实现自动控制温度、手动设置温度和显示的功能。通过了解市场对温控系统的需求和简化实现方式的前提下，本设计制定了易于实现的模块化设计方案，在硬件电路方面主要设计了最小系统电路、电源电路、电压参考电路、制热模块电路、温度传感器电路和温度采集电路等，并完成了智能温控的各项功能测试。本设计实现了温度显示、设置温度和温度采集的功能，以及保持设置温度的功能。关键词：单片机；PID；温度传感器；AD采集；铂电阻IIAbstractTemperaturecontrolsystemcanbefoundeverywhereinlife.Ithasbecomeanindispensablepartofpeople'slife，playedaveryimportantroleinthefieldofbiologicalpharmacy,metallurgy,medicaltreatmentandsoon.Itisanintegratedsystemcollectingtheenvironmentalmonitoring,thefeedbacktoadjustments,human-computerinteraction,andotherfunctions.Itisasystemthatcanberealizedreal-timetemperaturedatabythecorrespondingjudgmentprocessing,calculationtocontroltheoperationoftheequipmentinordertoachievetheidealtemperature,andithasawiderange.Nowadays,duetotheadvantagesofhighstability,anti-jammingandoperationrate,theARMtemperaturecontrolsystemhasbeenpopularwiththegeneralelectronicequipmentcontrolsystemdevelopers.ThisdesignusestheARMmicro-controllertechnology,PT100platinumresistancetemperaturesensortechnologyandsingle-chipmicrocomputertechnologytorealizethefunctionsofautomaticcontrol,manualsettingtemperatureandtemperaturedisplay.Themodulararrangementofthisdesigniseasyandconvenientbyunderstandingthemarketdemandfortemperaturecontrolsystemandsimplifyingthepremiseofimplementation.Intermsofhardwarecircuit,itdesigntheminimumsystemcircuit,powercircuit,voltagereferencecircuit,heatingcircuitandtemperatureacquisitionmodulecircuitandtemperaturesensorcircuit,etc.,andcompletethefunctionaltestsofintelligenttemperaturecontrol.Thisdesignhasrealizedthefunctionsofdisplayingthetemperature,settingupthetemperature,collectingthetemperature,andmaintainingthesettemperature.Keywords:MCU;PID;TemperatureSensor;A/Dconversion;PT100III目录1绪论......................................................................................................................................11.1课题的研究背景与意义...............................................................................................11.2课题的国内研究现状....................................................................................................11.3课题的国外研究现状...................................................................................................21.4课题的研究目的和内容...............................................................................................22系统总体方案设计与论证..................................................................................................32.1主控系统方案论证.......................................................................................................32.2电源系统方案论证.......................................................................................................42.3温度传感器方案论证...................................................................................................42.4显示模块方案论证........................................................................................................52.5A/D转换器模块方案论证............................................................................................62.6系统整体设计方案论证...............................................................................................73系统硬件设计......................................................................................................................83.1主控制系统设计...........................................................................................................83.1.1STM32F407单片机...............................................................................................83.1.2通用定时器............................................................................................................83.1.3模数转换器.............................................................................................................93.2温度采集电路设计.......................................................................................................93.3显示电路的设计.........................................................................................................103.4制热模块驱动电路设计.............................................................................................103.5电源系统设计.............................................................................................................114系统软件设计....................................................................................................................134.1主程序设计.................................................................................................................134.2温度采集程序设计......................................................................................................144.3驱动加热模块程序设计.............................................................................................144.4显示模块程序设计.....................................................