摘要温度是一个基本的物理量，几乎所有的科研和生产过程都和温度息息相关。准确获取系统的环境参数有助于对设备仪器的工作状态进行监控，因而，准确地测量和控制温度，对于获得正确的科研数据和保证产品质量都十分重要。本论文研究设计出一套多点温度测量系统，该系统具有测量精度高，控制范围广，抗干扰能力强等特点，可适用于科学研究及工农业生产等不同领域对温度测量的需求。在本文中，先分析了现有的几种不同的温度测试方法，并在对比各种不同方法的优缺点的基础上，考虑系统本身测试要求以及精度速度等指标要求选择数字温度计DS18B20作为本系统的传感器，采用LCD1602液晶双行显示芯片，分别显示温度传感器的测量温度值、温度最高上限值和测量时间的预设值。在选型的基础上设计了硬件系统以及相应的检测系统，通过综合调试，实现系统的测试和报警功能。关键字：多点温度传感器网络，单片机，温度测量ABSTRACTTemperatureisabasicphysicalfactor,almostallofthescientificandindustryworkhaveawaywithtemperature.Obtainingtheseparametercorrectlycanhelpustogaintheinstrument’sstate.So,howtocontroltemperatureaccurately,isveryimportantinscientificresearchandindustryquality.Inthissituation,designandimplementoneapplicablesystemwhichcanwatchmeasureandcontrolthetemperatureandthemeasuringresultsisrealtimeandtheprecisionisgreatismoreessential.Ittakesagreatoftroublesfortheindustry-controllerstomakedecision.Thispaperfirstanalyzedsomekindsofmethodabouttestingthetemperatureandthehumidity.Thenbalancethedifferentmethod’sdisadvantages,advantages,andtheusingsystem’smeteragerequirementabouttheprecision,testingrate,andsoon.AndthenchoosingthedigitalthermometerDS18B20.AndsettheTI’sMCU,LCD1602,asmainprocessor.Basedonthiswork,designedahardwarecircuit.Thiscircuitcanachievethetestingfunction.Weusethetemperaturechesttodemarcatethesystem.Keywords:Multi-PointTemperatureSensorNetwork,single-chipmicrocomputer，Temperaturemeasurement目录第1章引言...................................................................................................................11.1概述...........................................................................................................................11.2目前国内外研究现状................................................................................................11.3课题设计的目的和意义............................................................................................21.4论文主要内容...........................................................................................................31.5多点温度测量系统整体结构分析............................................................................4第2章多点环境监测系统的总体设计........................................................................52.1具体方案...................................................................................................................52.2系统主要技术参数....................................................................................................62.3本论文中元器件的选择............................................................................................72.3.1数字温度传感器概述.............................................................................................72.3.1.1DS18B20性能参数介绍......................................................................................82.3.1.2DS18B20的测温原理........................................................................................102.3.1.3DS18B20自动搜索算法........
