具有行駛記憶等綜合功能的汽車儀表系統(tǒng)開發(fā)研究.pdf

1、分類號UDC冀81657受學位論文具有行駛記憶等綜合功能的汽車儀表系統(tǒng)開發(fā)研究作者姓名至羞鴟指導教師姓名墊亡墨型童選塞j叁鱟主塑三壁盟窒盟申請學位級別塑學科類別蘭堂學科專業(yè)名稱主塹三整論文提交日期2壁Q墨圭2月論文答辯日期至塑立量生2旦學位授予口期評閱人答辯委員會主席東北大學2005年2月查j!查蘭堡圭堂垡堡莖竺!!墜竺!TheResearchoftheVehicleMeterSystemwiththeIntegratedFunctio

2、nsIncludingAutomotiveRecorderAbstractOnthebasisofacamlityofautomotiveelectronicstechnologyvehiclemetersandthevehiclerecorderinOUrcountryandonthebasisofthedevelopmentalcurrentofvehiclemetersintheword，fromtheaspectofeconom

3、ization，applicabilityandrationalityanewtypeofvehiclemetersystemwithintegratedfunctionsincludingautomotiverecorderisresearchedanddesignedinthispaperThisnewtypeofvehiclemetersystemadoptsdigitalprocessingmodeandallthedatais

4、fromtheexistingsensorsbeingusedinvehiclesThismeterusesthemicroprocessorP87C552asitscorewhichisdesignedforuseinautomotiveapplicationsThesignalsprocessedhavethreetypes“analogsignals，ditialsignalsandonoffsignals，andtheyarec

5、ollectedormeasuredthroughthecapturefunctionmoduleandA／DchangefunctionmoduleofthemicmchipandallI／0extendedmicrochipPCF8574separatelyInthemetersystemtherearetherekindofdisplaymodes：analogdisplay(usingthesteppermotortodrive

6、thepointer)，LEDdigitaldisplayandLEDvoltagemeterThemetercangiveallalarmwitlllightandsoundwhenaparameterormoreexceedthelimintorlimitsThedifferentparameterscanbedistinguishedbythedifferentsoundsThemetersystemhasthefunctiono

7、ftheautomotiverecorderandthetransmissionmodeusesthereliableSPIbus，whilethestoragemodeadoptscircularstorageInordertoimprovetheprecisionofthedatahardwarefilterandsotbvarefilterarebothusedBesidesthese，reliabilitydesignsinha

8、rewareandsoftwarearebothconsiderdinthepaperThevehiclemetersystemCanprovidemoreexactdataintimeforthedrivertocontrolautomobiles，andgiveanalarminadangerousstatetemindthedriverTherecorderfunctionofthemetersystemCanrecordthel