单片机数据采集系统单片机数据采集系统PAGE４２PAGE４１PAGE１摘要本文提出了一种基于多个MCU通信的实时数据采集系统方案，该系统由监控计算机单元，数据处理单元，总线隔离器单元，接收单片机，数据采集单元组成。数据处理单元与多个现场采集器为点对点的串行通信方式，在数据处理单元内部，各个通道的数据以双CPU并行通行方式进行处理，处理的结果以串行方式送入监控主机；同时在采集单元与处理单元，处理单元与计算机之间采用RS-485总线进行数据的传送；对于采样的数据，通过可编程键盘/显示接口8279芯片对数据进行显示，筛选，转存。实际运用证明，该方案具有良好的实时性。[关键词]数据采集处理系统；单片机（MCU）；串行通信；并行通信AbstractThetextbringsforwardasortofreal-timedatacollectingsystemscheme，whichisbasedonmulti-MCUcorresponding.Thesystemconsistsofsupervisingcomputercell,dataprocessingcell,overall-insulatingcell,inceptingSCManddatacollectioncell.Thedataprocessingcellandthemulti-fieldcollectorsareserialcommunicationwhichareonepointoppositeonepoint.Withinthedataprocessingcell,everypassagedataareprocessedindoubleCPUmerge-capabletransmissionfashion.Then,theprocessingresultsenterthesupervisinghostcomputerinstrand-capablefashion.Atthesametime，wetransmitdatawithadoptingRS-485busbetweenthecollectioncellandtheprocessingcell,andalsobetweentheprocessingcellandthecomputer.Astothesamplingdata,wedisplaythedatabyprogrammingkeyboard/displaying8279CMOSchip,aswellasfiltratinganddepositingthedatawithtransferringfashion.Practicalitymobilizationprovesthisprojecthasfavorablereal-timecharacter..Keywords:dataacquisitionandprocessingsystem;Microcontrollerunit;serialdatacommunication;paralleldatacommunication目录TOC\o\h\z\uHYPERLINK\l"_Toc106240365"摘要PAGEREF_Toc106240365\hIHYPERLINK\l"_Toc106240366"AbstractPAGEREF_Toc106240366\hIIHYPERLINK\l"_Toc106240367"目录PAGEREF_Toc106240367\hIIIHYPERLINK\l"_Toc106240368"CATALOGPAGEREF_Toc106240368\hIVHYPERLINK\l"_Toc106240369"第一章引言PAGEREF_Toc106240369\h１HYPERLINK\l"_Toc106240370"1.1数据采集系统的组成PAGEREF_Toc106240370\h１HYPERLINK\l"_Toc106240371"1.2数据采集系统的应用领域及发展前景PAGEREF_Toc106240371\h１HYPERLINK\l"_Toc106240372"第二章概述PAGEREF_Toc106240372\h３HYPERLINK\l"_Toc106240373"2.1单片机的组成PAGEREF_Toc106240373\h３HYPERLINK\l"_Toc106240374"2.2单片机的分类PAGEREF_To