chapter One of The Emedded System in Intelligent Health WatchWord格式文档下载.docx

chapter One of The Emedded System in Intelligent Health WatchWord格式文档下载.docx

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PartOne1

1.1Background:

1

1.2EmbeddedDevelopmentTechnologyandEmbeddedDevelopmentProcess2

1.2.1EmbeddedDevelopmentTechnology2

1.2.2EmbeddedDevelopmentProcess3

1.3EmbeddedSoftwareStratificationandTransplantation4

1.3.1EmbeddedSoftwareStratification4

1.3.2EmbeddedSoftwareTransplantation4

1.4Summary5

PartTwo6

PartThree6

Outline

PartOne

ThebackgroundofthedevelopmentoftheEmbeddedSysteminintelligenthealthwatch

Withtherapiddevelopmentofsocietyandthefurtherimprovementoflivingstandards,peoplearenotonlysatisfiedwiththesubsistenceandentertainmentoflife,butalsopaymoreattentiontotheirownhealth.Therefore,ahealthylifestyleisalsomuchfavoredbypeople.Whatkindoflifestyleisahealthylifestyleisalsoaproblemthatthecommunityhasbeendiscussingandpayingattentionto.Atthesametime,withtheintroductionoftheconceptofwearableintelligentdevices,itprovidesanewwayforpeopletopursuehealthylifestyles.Asawearableintelligentdevice,intelligentwatches,coupledwithfunctionssuchashealthmanagement,newsnotification,weatherandstock,havefurtherenrichedtheconceptofwearableintelligentdevices.Therefore,inthispaperwearegoingtocompletethedesignandimplementationofintelligenthealthywatcheswhichareusedtomonitorthedataofuser’smovementandsleep.Thentheusercanenjoyahealthyandhappylifeinthisway.

1.2EmbeddedDevelopmentTechnologyandEmbeddedDevelopmentProcess

1.2.1EmbeddedDevelopmentTechnology

AccordingtothedefinitiongivenbyBaiduBaike,inanarrowsense,thewearablesmartdeviceisageneraltermforwearabledevicesdevelopedbyusingwearabletechnologytodesigneverydaywearabledevices.SuchasGoogleGlass,GalaxyGear,SonyIntelligentWatchandsmartbraceletsintroducedbydomesticmanufacturerslikeHuawei,360andothercompanies;

Ingeneralwearableintelligentdeviceslikesmartwatchesorsmartglassesmaynotrelyonsmartphonestoachievefullorpartialfeatures.Itcanalsofocusononlyonetypeofapplicationandneedtobeusedinconjunctionwithotherdeviceslikesmartphones.Forexample,therearevarioustypesofwristbandsandsmartjewelryusedforsignsmonitoring.

Withthechangingneedsofusersandthecontinuousimprovementoftechnology,theexistingformsandapplicationfunctionsofwearablesmartdevicesareconstantlychanging.Eachdefinitionofwearablesmartdevicesisalsodifferent.Amongthem,Wikipediadefineswearablesmartdevicesas"

miniatureelectronicdevicesthatcanbewornonbodyforactivities"

.Thisdefinitionissimple.Butitalsoincludesafewofthefeatureswhichwearablesmartdeviceshave.Featuresareasfollows:

a）Persistent

b）Intelligent

c）Specialsensor

1.2.2EmbeddedDevelopmentProcess

Itisalengthyandcomplicatedprocessfromtheconceptofanembeddeddevicetoitsimplementationwhichrequiresthecoordinationofmanypeopletocomplete.Inthisprocessweneedtousealargenumberoftechniquesandmanagementmethods,butfortechnologyalwayskeepsimprovingandtheknowledgeusedintheprocessisconstantlyupdated,soembeddeddeveloperscan’tgetacompleteandproficientmasterofmanytechnicaldetailsachievingtheproductprocess.Atthesametime,thetechniciansjustneedtohaveenoughknowledgeinvolvedintheimplementationprocessanddonotneedtomasterallthetechnologiesusedinproductdevelopment.However,theembeddedproductdevelopmentprocessisnotwithoutrules.Manypredecessorsfinallysummedupacompletesetofembeddedproductdevelopmentprocess,Andundertheguidanceofit,eachtechnicalstaffperformshisduties,worktogethertoimprovetheefficiency.

Allembeddedproductswillincludetwoparts,namely,embeddedsoftwareandembeddedhardware.Theembeddedsystemdevelopmentprocessisdividedintothreeparts,namelytheoveralldesignanddevelopmentofembeddedsystems、thesoftwaredesignanddevelopmentandhardwaredesignanddevelopment..

Intheoveralldesignanddevelopmentofembeddedsystems,itmainlyinvolvesthedeterminationoftheoverallsystemframeworkandtheselectionofhardware,etc.Sincetherequirementsdeterminethetypeofhardwareinthesystem,soweneedtochoosethespecifichardwareaccordingtospecificrequirements.Wealsoneedtodotheseprocesseslikearchitecturedesign,detaileddesignandimplementationinthehardwareandsoftwarearchitecturedesignandimplementationprocess.Theyaresimilartothetraditionalsoftwaredevelopmentmethods.

1.3EmbeddedSoftwareStratificationandTransplantation

1.3.1EmbeddedSoftwareStratification

Thehardwarearchitectureisthefoundationwhilethesoftwarearchitectureisthesouloftheembeddedsystem.Anembeddedsystemcanbedividedintofourlevels:

BootLoader,Linuxkernel,filesystemanduserapplicationfromtheperspectiveofsoftware.Eachlevelisresponsiblefordifferentfunctionsbutindispensable.Thefourlevelscompletethefunctionofembeddedproductscooperatingwitheachother.

BootLoaderisthemostbasicpartoftheembeddedsystemwhichisthefirstprogramtorunwhenthesystemispoweredon.BootLoadercanbesplitedintoBootandLoader.Theformeristostarttheembeddedsystem,infact,istoinitializetheoperation.AndtheotheroneistocopytheoperatingsystemsolidifiedintheROMorapplicationcodeandsystemparameterstoRAM.

LinuxkernelisthecoreoftheentireLinuxoperatingsystem,whichdeterminestheperformanceandstabilityoftheentiresystem.

Thefilesystemisanimportantpartoftheembeddedsoftwaresystem.ThefilesystemislocatedontheLinuxkernel.Itprovidestheuserwithaunifiedandobject-orientedaccessinterfaceandavoidthephysicaldirectoperationofequipmentandresourcemanagement.

Thetopoftheembeddedsoftwaresystemistheapplicationlayerwhichisthefunctionembodyingoftheentireembeddedproduct.Itcarriestheresponsibilityofdirectlyinteractingwiththeuserandprovidingtheuserwiththefinalserviceoftheproduct.

1.3.2EmbeddedSoftwareTransplantation

TheIntelligentHealthWatchusestheJZ4775program.Theprogramhasbeenincludedinthefactory:

bootloaderXBOOT,mobileoperatingsystemLinux3.4,Android4.1.2rootfilesystemandsomeandroidapplications.However,duetospecialfeaturesandinterfacerequirementsofthecustomintelligenthealthwatch,weneedtore-modifyanddesignthesoftwaresystem.Thespecificchangesareasfollows:

（1）changeBootloaderX-boot’slogo

a）preparetheoriginaljpgpicture

b）generate.rlefile

c）compilethecustomlogointoX-boot.

（2）IntheLinuxkernellayer,becausethewatchneedstocommunicatewiththesmartphonebyBluetooth.Atthesametimeinthefunctionalneedsoftheupperapplication,weneedfunctionslikestep-by-stepandstand-upmonitoring,andthesefunctionsneedtousetheaccelerationsensor.SointhekernellayerweneedtokeepaccelerometerserviceandBluetoothservice,andotherunwantedservicesdonotneedtobestarted.

（3）Inthefilesystemlayer,theIntelligentHealthWatchusestheTMPFS,devpts,proc,andsysfsfilesystemssincetheAndroidoperatingsystemisalreadyinstalledintheJZ4775solution.

（4）Intheapplicationlayerweneedtodomorework.Firstofallweneedtowritecustomhealthmonitoringmanagementsoftwareaccordingtotheneeds,designsoftwarearchitecture,writesoftwarecodeandtestittoensuretherearenoerrors.Atthesametime,inordertomaketheIntelligentHealthWatchmoreefficient,weneedthedeletionofsomeapplications.ThespecificdesignistodeletethecallingfunctionAPP,SMSAPP,contactAPP,cameraAPP,photogalleryAPP,notepadAPP,musicAPP,browserAPP,calculatorAPP,calendarAPPandclockAPPwhichareincludedinAndroid.

AftercompletingtheoperationsofmodifyingtheLinuxkernelandstreamliningAndroid,thesystemneedstobecompiled.Sincethen,wehaveacompletedesignforsoftwarelayeroftheintelligenthealthwatchembeddedsystem.Inthenextchapterwewillgiveacompleteanalysisanddesignofthesystem'

sfunctionalarchitecture.

1.4Summary

ThischaptermainlyintroducesthebackgroundofthedevelopmentoftheEmbeddedSysteminintelligenthealthwatch.AndinformationaboutEmbeddeddevelopmenttechnologyandEmbeddeddevelopmentprocessisgiven.ThischaptermainlyintroducesEmbeddedSoftwareStratificationandTransplantationintheintelligenthealthwatch.Accordingtothetraditionalembeddedproductdevelopmentprocess,wedeterminethefunctionsthesmarthealthwatchneedtohave.Thenwedesignthesoftwarearchitectureofthesmarthealthwatchindetail.Accordingtothetraditionalhierarchicalprincipleofembeddedsoftware,theembeddedsoftwarepartoftheintelligenthealthwatchisdividedintofourlayers.Inordertoensurethesmoothnessofthewatchandcustomfeaturesandinterfaces,thischapterintroducescustommodificationanddevelopmentforalllayers.

EmbeddedDevelopmentTechnologyandEmbeddedDevelopmentProess

EmbeddedSoftwareStratificationandTransplantation:

levelofembeddedsoftwareandtheachievementofembeddedsoftwaretransplantation

Summary

PartTwo

Applicationoverview

ApplicationFunctionAndNon-FunctionRequirements

Movementmonitoringfunction

Maintenanceandmanagementofhealthinformation

Sleepmonitoringfunction

Messageprompt

Unstoppedin24hoursperday

FunctionArchitectureDesignofApplication

There