ARM9电力智能终端通信软件及压缩算法的研究

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1、Y113355，o③北京化工大学单俺代码：]00】()学号：砌争Ⅲ巾；硕士研究生学位论文题目删虫虚整赵盎磷逢盘复律良奄瘟焉匿亟盈瘁盎-专业进§赴盘晕韪墨研究生盔鉴、熟指导教师至望尘日期：训7年jr月鹚El实现RAY-Period压缩算法和自适应哈夫曼编码，并进行压缩效果的比较。(4)研究各种嵌入式GUI开发工具，掌握用Qt／Embedded开发包进行GUI的开发方法，并设计智能终端的GUI程序，使终端LCD实现数据的显示功能。(5)将RAY-Period压缩程序、通信程序、GUI程序进行整合，在交叉编译环境下调试和运行实验，最终实现采用以太网技术的终端与主

2、站的数据压缩和传输。关键词：智能终端，以太网，MIZILinux，压缩算法lJRESEARCHOFELECTRICPO珊RINTELLIGENTTERMⅡNAL'SCoMMUNICATIoNSoFrWAREANDCoM【PRESSALGoIUTHMBASEDONARM9Withthecomingof21century,intelligentterminaldevelopmenthasbeenthepopularresearchobject．Thehugemarketdemandandproftspaceattrac捃attentiousofenterpri

3、sesandscientificresearchinstitution．Inelectricpowersystem,intelligentterminalisappliedtotransformersubstation,andlargepowerconsulners，inwhichGPRS／CDMAorothercommunicationmodesnowhavebeenusedtocommunicatewithelectricpowermanagementmainstation．Withtheincreasingdemandofterminalperfor

4、manceandsecurityintheindustrycondition,manydisadvantagesappearinformerterminal．Focusingonsuchsituation,thetraditionaldesignschemesofintelligentterminalwereanalyzedandsummarizedinthedissertation,andthenMIZILinuxembeddedoperationsystemandARM9microprocessorWasadoptedasterminal’sdevel

5、opmentflatform,industryEthemetwaschosentobecommunicationchannelatthesametime．Themainworksofthedissertationlist淞follows：(1)ThedesignschemebasedonARM9developmentboardandMIZILinuxembeddedoperationsystemwasgivenaccordingtothecharacterofmintelligentterminals．ThesoRwareandhardwaredevelo

6、pmentplatformofMIZILinuxembeddedoperationsystemwasbuilt．(2)Basedon(1)，theterminalusedtheDM9000chiptocontrolEthernetcommunication．AfterthecommunicationmoduleWasusedsuccessfully,socketnetworkprogrammeWasprogrammedinLinux．Thentheterminal’SEchernetcommunicationfunctionWasrealized．(3)R

7、AY-PeriodcompressionalgorithmWasaddedtotheterminaltodecreasethenetworkdatafluxandreducethertmningcharge．KindsofcompressionalgorithmswerestudiedandRAY-Periodcompressionalgorithmwasstudieddeeply．AndtheRAY-PeriodcompressionalgorithmwasrealizedwimC++intheLinuxoperationsystem．(4)Qt／Emb

8、eddeddevelopmentkitWaSchosentodev