毕业设计论文基于msp430单片机和DS18B20使数码管显示的温度测量摘要：为了在现实生活和工业生产及过程控制中准确测量温度，设计了一种基于低功耗MSP430单片机的数字温度计，整个系统通过单片机MSP430F149控制DS18B20读取温度，采用数码管显示，温度传感器DS18B20与单片机之间通过串口进行数据传输，MSP430系列单片机具有超低功耗，且外围的整合性高，DS18B20只需一个端口即可实现数据通信，连接方便，通过多次实验证明，该系统的测试结果与实际环境温度一致，除了具有接口电路简单，测量精度高，误差小，可靠性高等特点外，其成本低，功耗低的特点使其拥有更广阔的应用前景。关键字：温度测量MSP430单片机温度传感器DS18B20超低功耗Abstract:inordertoaccuratelymeasurethetemperatureinreallifeandindustrialproductionandprocesscontrol,adigitalthermometerwasdesignedwithlowpowerconsumptionbasedonMSP430singlechipmicrocomputer,thecontrolsystemofDS18B20readthetemperaturethroughthesingle-chipMSP430F149,theuseofdigitaltubedisplay,temperaturesensorDS18B20andsinglechipmicrocomputerfordatatransmissionthroughtheserialport,MSP430SeriesMCUwithlowpowerconsumptiontheperiphery,andhighintegration,DS18B20onlyneedsoneporttorealizethedatacommunication,theconnectionisconvenient,throughmanyexperiments,thetestresultsofthesystemandtheactualenvironmenttemperatureisthesame,exceptwiththeinterfacecircuitissimple,highprecision,smallerror,highreliability,lowcost,lowpowerconsumptionithasawiderapplicationprospect.图表SEQ图表\*ARABIC1关键字：温度测量MSP430单片机温度传感器DS18B20超低功耗Keywords:temperaturemeasurementMSP430temperaturesensorDS18B20ultralow2powerconsumption目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc363283815"一．温度测量器的总体设计PAGEREF_Toc363283815\h2HYPERLINK\l"_Toc363283816"二．温度测量器的硬件选择PAGEREF_Toc363283816\h3HYPERLINK\l"_Toc363283817"1主控器件：MSP430F149PAGEREF_Toc363283817\h3HYPERLINK\l"_Toc363283818"2温度信息采集单元：DS18B20PAGEREF_Toc363283818\h4HYPERLINK\l"_Toc363283819"2.1DS18B20PAGEREF_Toc363283819\h4HYPERLINK\l"_Toc363283820"2.2DS18B20管脚排列PAGEREF_Toc363283820\h4HYPERLINK\l"_Toc363283821"3.显示单元：数码管及其驱动PAGEREF_Toc363283821\h5HYPERLINK\l"_Toc363283822"3.1数码管PAGEREF_Toc363283822\h5HYPERLINK\l"_Toc363283823"3.2驱动芯片：74HC573PAGEREF_Toc363283823\h6HYPERLINK\l"_Toc363283824"三.系统软件程序PAGEREF_Toc363283824\h7HYPERLINK\l"_Toc363283825"1、系统的程序流图PAGE