march 7, 2016 school of engineering sciencewhitmore/courses/ensc305/projects/2016/... ·...

March7,2016Dr.AndrewRawiczSchoolofEngineeringScienceSimonFraserUniversityBurnaby,BCV5A1S6Re:ENSC-305W/440WDesignSpecificationforNav-BsystemDearDr.Rawicz,PleaseacceptthefollowingdocumentasaDesignspecificationforourHeadsUpDisplayproject(Nav-Bsystem).Ourmaingoalistodesignandimplementacyclingnavigationsystemthatmakesbikingasaferandmoreenjoyableexperienceforcyclists.Theimplementationofourdesignprovidesuserswithrealtimenavigationalinformation,distancecovered,currentspeedandtimeoftheday.Thepurposeofthisdocumentistoprovideadetaileddescriptionofthedesignspecificationsofourproposedproduct.Thekeyitemscoveredincludethesmartphoneapplication,mechanicalholdingarm,hardwarechoicesandadisplaymodule.Additionallythedocumentprovidesatestplan,whichwillbeadoptedtoreachafinalworkingmodelstage.EVRTechconsistsoffivetalentedandhardworkingseniorengineeringstudents:SaumyaSangal,AakritiArora,TokySaleh,AlanZuoandLiangshuoGuo.Ifyouhaveanyquestionspertainingtoourproduct,pleasefeelfreetocontactourCOObyphoneat604-780-0467orbyemailataakritia@sfu.ca.Weareveryeagertohearyourfeedbackofourproduct.

KindestRegards,

SaumyaSangalChiefExecutiveOfficerEVRTechEnclosure:DesignSpecificationofNav-Bsystem

DesignSpecificationforNAV-B

systemAsmartandsafebicyclesystem

ProjectTeam: SaumyaSangal

AakritiArora TokySaleh AlanZuo LiangshuoGuo

ContactPerson: [email protected] Submittedto:

Dr.AndrewRawicz-ENSC440W SteveWhitmore-ENSC305W SchoolofEngineeringScience SimonFraserUniversity

IssuedDate: March7,2016 Revision: 1.1

Copyright©EVRTech.AllRightsReserved.II

Abstract

ThisdocumentcontainsadetaileddesignspecificationfortheNav-B.Asystemoverviewisprovidedtogivethereaderasenseoftheoveralldesign.Thedesigndetailslistedinthisdocumentcorrespondtothecomponentrequirementsinthefunctionalspecificationdocument.TheoverallsystemhasbeensegmentedintoeachseparatecomponenttoallowparalleldevelopmentoftheNav-Bsystem.

Thehardwaresectionconsistsoftheselectedmicrocontroller,bluetoothmodule,toggleswitchandthechosendisplayscreenmodule.Thesystemisactivatedwiththehelpofasmartphoneapplicationthatrequeststheusertoinputtheirdestinationaddressinordertobeginthecommunicationrelaywiththemicrocontroller.Thesystemiscontainedwithinamechanicalholdingarm,whichprovidesanaddedflexibilityfunctionthatallowstheuserstomovetheentiresystemverticallyandhorizontally.

Thedisplaymoduleallowstheuserstotogglethroughmultipledatascreensviapushingthetogglingswitchontheholdingarm.Thescreenwilldisplaythecurrenttimeofthedayandrouteinformationmetricsasitsdefaultoutput.Usersmaythenaccesstheremainingdistance,speed,andcallandtextinformationviatheaforementionedswitch.

Adetailedtestplanhasbeenincludedinthisdocumentthatwillensurethatallrequirementsaremetduringdevelopmentandtestingphases.Atthemoment,weareaheadofscheduleandarehopingtobegintestingsoon.

Copyright©EVRTech.AllRightsReserved.III

TableofContentsAbstract.......................................................................................................................................................II

ListofFigures..............................................................................................................................................IV

ListofTables................................................................................................................................................V

Glossary.......................................................................................................................................................V

1.Introduction.............................................................................................................................................1

1.1Scope.................................................................................................................................................1

1.2IntendedAudience............................................................................................................................1

2.SystemRequirements..............................................................................................................................2

3.OverallSystemDesign.............................................................................................................................3

4.SoftwareDesign.......................................................................................................................................4

4.1GoogleAPIWebService....................................................................................................................5

4.2ConnectsmartphonetoArduino.......................................................................................................7

5.HardwareSpecifications..........................................................................................................................8

5.1MicrocontrollerUnit..........................................................................................................................8

5.2BluetoothModule..............................................................................................................................9

5.3WritingBluetoothcommunicationCode.........................................................................................10

5.4EmbedBluetoothcommunicationCodeintoGoogleMaps............................................................10

5.5CommunicationbetweenArduinoUnoandBluetoothModule......................................................11

5.6OLEDDisplayUnit............................................................................................................................13

5.7CommunicationofOLEDDisplaywithArduinoUno........................................................................14

5.8PowerSupply...................................................................................................................................15

5.9ToggleSwitch...................................................................................................................................16

5.10MechanicalHoldingArmUnit........................................................................................................16

Physical..............................................................................................................................................16

Material.............................................................................................................................................17

6.SystemTestPlan....................................................................................................................................18

6.1UnitTesting......................................................................................................................................18

SmartphoneApplicationUnitTestPlan.............................................................................................18

MicrocontrollerUnitTestPlan..........................................................................................................18

Copyright©EVRTech.AllRightsReserved.IV

DisplayUnitTestPlan........................................................................................................................18

MechanicalHoldingArmUnitTestPlan............................................................................................19

6.2IntegrationTesting...........................................................................................................................19

6.3RegressionTesting...........................................................................................................................19

6.4AcceptanceTesting..........................................................................................................................20

7.Safety.....................................................................................................................................................20

8.Conclusion.............................................................................................................................................20

References.................................................................................................................................................21

Appendix....................................................................................................................................................23

ListofFiguresFigure1-TopLevelSystemDesign------------------------------------------------------------------------------------------2Figure2-SolidworksexamplemodelofNav-Bsystem-----------------------------------------------------------------3Figure3-SolidWorksconceptmodeloftheproductionversionoftheNav-B-----------------------------------4Figure4-Mainscreen-----------------------------------------------------------------------------------------------------------5Figure5-Genymotionscreen-------------------------------------------------------------------------------------------------6Figure6-Enterdestinationaddress----------------------------------------------------------------------------------------6Figure7-Settingsscreen-------------------------------------------------------------------------------------------------------7Figure8-Bluetoothconnectionscreen------------------------------------------------------------------------------------7Figure9-ArduinoUno---------------------------------------------------------------------------------------------------------8Figure10-BluetoothModuleHC-06---------------------------------------------------------------------------------------9Figure11-PinDescriptionofHC-06BluetoothModule--------------------------------------------------------------9Figure12-AndroidStudioIDE-----------------------------------------------------------------------------------------------10Figure13-Terminalscreen---------------------------------------------------------------------------------------------------11Figure14-ArduinoIDEscreen-----------------------------------------------------------------------------------------------11Figure15-ArduinoIDEconnectedtoBluetoothmodule------------------------------------------------------------12Figure16-ArduinoIDEconnectedwithDupontline------------------------------------------------------------------12Figure17-AdafruitOLEDDisplay------------------------------------------------------------------------------------------13Figure18-ConnectedOLEDDisplayandArduinoUno----------------------------------------------------------------14Figure19-ConnectedOLEDDisplayandArduinoUno---------------------------------------------------------------14Figure20-ConnectedOLEDDisplayandArduinoUno---------------------------------------------------------------15Figure21-ToggleSwitch-----------------------------------------------------------------------------------------------------16Figure22-3-Dmodelofmechanicalholdingarm---------------------------------------------------------------------17

Copyright©EVRTech.AllRightsReserved.V

ListofTablesTable1-BasicSpecificationofOLEDDisplay---------------------------------------------------------------------------13Table2-HoldingArmSpecifications--------------------------------------------------------------------------------------17 Glossary ABS-Acrylonitrile-Butadiene-Styrene,isalowcostengineeringplasticthatiseasytomachineandfabricate[1]

Android-AnoperatingsystemusedformobiledevicesbyGoogleAPI-Itisanapplicationprograminterface,asetofroutines,protocolsandtoolsforbuildingsoftwareapplicationsArduino-Open-sourceelectronicsprototypingplatformforhardwareandsoftwareusageDC-PinconnectionofOLEDscreentoArduinoD1-PinconnectionofOLEDscreentoArduinoD0-PinconnectionofOLEDscreentoArduinoGND-GroundHTTP–HyperTextTransferProtocoliOS-AnoperatingsystemusedformobiledevicesbyAppleInc.OLED-OrganicLight-emittingdiodetechnologyPlaPlastic-(PolyLacticAcid),Itisabio-degradabletypeofplasticthatismanufacturedoutofplant-basedresourcessuchascornstarchorsugarcane.[5]

PlexiGlas-Atrademarkforalight,transparent,weatherresistantthermoplasticRES-PinconnectionofOLEDscreentoArduinoRXD-HC-06bluetoothpinconnectionTXD-HC-06bluetoothpinconnectionVCC–voltagesupplypinWi-Fi-wirelessnetworkingtechnology

Copyright©EVRTech.AllRightsReserved.1

1.Introduction

TheNav-B,aproductofEVRTech,isawearableHUDdevicethatimplementsthelatestadvancementsinOLEDtechnologywithagoaltomaketherideforcyclistssaferandmoreconvenient.Withourproduct,cyclistsarebetterpreparedontheirtravelsastheynolongerneedtorisktheirsafetybyusingtheirsmartphonesorpullingoverfordirectionsinunsafeandinconvenientlocations.Inordertouseourproducttheusermustsimplydownloadourappandentertheirdestination.OncethedestinationhasbeenconfirmedtheusercanattachtheNav-Bontotheirhelmetandenjoythebenefitsofhandsfreenavigationandarangeofmetricsbasedontheuser’sperformance.ThisdesignspecificationdocumentprovidestherequirementsandprocessdetailsforthedevelopmentofaworkingmodelfortheNav-B.

1.1 Scope

ThisdocumentprovidesindetailthedesignspecificationsthatwerechosenfortheproofofaconceptualmodelfortheNav-Bsystem.Theorderofthecontentsofthisreportcorrespondtotheconcerneddevelopmentphasesthathavebeendetailedinthefunctionalspecification.Thedesignofeachcomponentisaidedbyimagesandsketchestoprovideavisualrepresentationofthefinalsystemdesign.Furthermore,atestplanhasbeenattachedtoevaluatethefunctionalaspectofeachdevelopmentphaseaswellasthefinalintegratedmodel.

1.2IntendedAudienceThisdocumentisintendedtobeusedbyallmembersofEVRtech,andwillactasthebasisforthedevelopmentoftheNav-Bmodel.Engineersworkinginthetestingandevaluationfieldshallrefertothetestplanandensurethatrequirementsaremetforeachstageandcomponent.DevelopmentEngineersmustensurecomplianceofeachcomponentwithengineeringandsafetystandardsdetailedinthefunctionalspecification.


2.SystemRequirements

Nav-Bcontainsanembeddedsystem,ArduinoUno,anOLEDscreenandabluetoothmodule.Thesethreemajorhardwarecomponents,whencombinedwiththesmartphoneapplication,arewhatcreateourEVRTechproduct.Byallowinguserstoentertheirdestinationfromthemobileapplicationontotheembeddedsystem,wehelpthembyprovidingdetailedinstructionsoftheirroutes,whichincludesturnsignals,speed,timeandremainingdistance.Combiningallthesefeaturestogether,EVRTechwillcreateasmartandsafebicyclesystem.ThebasicconceptofourentiresystemisfurtherillustratedinFigure1below.

Figure1-TopLevelSystemDesign


3.OverallSystemDesign

Figure2belowisa3-dimensionalSolidWorksmodeloftheoverallNav-Bsystem.ItdisplayshowtheArduinoUnoandOLEDscreenwillbeconnectedtogetherviaamechanicalholdingarm.

Figure2-SolidworksexamplemodelofNav-Bsystem


Figure3-SolidWorksconceptmodeloftheproductionversionoftheNav-B

4.SoftwareDesignAsstatedinthe[R-51-A]softwarerequirementsofthefunctionalspecification,thesmartphoneapplicationwillallowuserswithiPhonedevicestoentertheirdestination.Theapplicationwillusethedevice’scurrentlocationanddisplayturn-by-turndirectionandsmartnotificationwithrespecttothedestinationenteredbytheuser.TheapplicationwillrelaythedirectionsandothernotificationstothemicrocontrollertodisplayontheOLEDscreen.


Figure4-Mainscreen

TheFigure4abovedisplaytheNav-BiPhoneapplication.

Allpreviouslyenteredplaceswillbesavedin“RecentDestinations”tabandcanbemarkedasfavouritesforlaterretrieval.Oncetheuserentersthedestinationandclickon‘Startnavigation’,theapplicationwillminimizeandcontinuetoruninthebackground.Whilerunninginthebackground,theapplicationwillsendturn-by-turninstructionstothemicrocontroller,whichwilldisplaytheinformationontheOLEDscreen.

4.1GoogleAPIWebServiceThesmartphoneapplicationiscomprisedofGooglemapsAPIwebservices.Forcodeverification,theapplicationcomprisesof:(1)ApkTool(2)SmaliTool.smali(3)Qihoo360ApkSigner(4)DDMS(5)Genymotion(6)Pythonenvironment(7)playback-gpx(8) Android SDK


Google Maps API allowed access to HTTP interfaces, providing geographic data such as geocoding, directions, elevation, place and time zone information [1]. GenymotiondetectedtheGPSpositionchangesandtheaccuracyofthenavigation,andwereabletosetthelocationonthebasisonlongitudeandlatitudeasshowninFigure5below.

Figure5-Genymotionscreen

InGoogleMaps,settheendpointforthenavigationasWuhanRailwayStation,andusethedefaultroutetostartthenavigation.Afterthenavigationhasstarted,turnonDDMStoreceivelogs,asshowninFigure6below.

Figure6-Enterdestinationaddress


4.2ConnectsmartphonetoArduino

(1)GotoSettingsaBluetoothonasmartphonedevice,turnonBluetooth,andchoosetopairwithHC-06,ourBluetoothmodule(discussedinsection5.2).

Figure7-Settingsscreen

(2)Insert1234astherequiredpairingpassword,andclick“OK”.

Figure8-Bluetoothconnectionscreen


5.HardwareSpecifications TheNav-Bsystemconsistsofthefollowinghardwarecomponents:

• Microcontroller• BluetoothModule• OLEDDisplay• PowerSupply• ToggleSwitch

5.1MicrocontrollerUnit

Figure9-ArduinoUno[2]

TheNav-BsystemwillincorporateanArduinoUnoR3withanATmega16U2microcontrollerasshowninFigure9above.EVRTechchoseArduinoUnoasourprimaryprocessingplatformforitsbetterportabilityandbeinglightweightas25grams.Italsoallowsfastertransferrateandmorememory.Theboardwastheidealchoiceforawearabledevice.Furthermore,Arduinoisopen-sourcephysicalcomputingplatformwhichmadeitappealingtoourengineersatEVRTech[2].Theboardwillbepoweredwith5Vbattery,whichisinarangeofoperatingvoltageforArduinoUno.


5.2BluetoothModule

Figure10-BluetoothModuleHC-06[3]

InordertoconnectsmartphonewithArduino,totransferrouteinformation,BluetoothmoduleisusedoverWi-Fi.ThisisbecauseWi-FiconsumemorebatterythanBluetooth.WechosetopurchasetheHC-06BluetoothModuleseeninFigure10above,duetoitssmallsize(27mmby13mmby2mm),lowpowerconsumption,high-performancewirelesstransceiversystemandlowcost[4].Below,isthespecifiedPINdescriptionofbluetoothmodule.TherearefourcomponentsthatshouldbeconnectedtoArduinoUno:RXD,GND,TXDandVCCwhichareexplainedinthenextsectionbelow.

Figure11-PinDescriptionofHC-06BluetoothModule[4]


5.3WritingBluetoothcommunicationCode

EVRTechusedAndroidStudioIDEtoenableBluetoothconnectionfromsmartphonedevicetoArduinoUno.AndroidStudioprovideswizardsandtemplatesthatverifythesystemrequirementsandallowsconfiguringdefaultsettings.GoogleSDKwasimportedalongwithBluetoothTool.javaandBlueToothThread.java.TheAndroidStudioIDEalsoallowedtheuseofTranslationsEditortoviewallthetranslatedresources,modifytranslations,andaddnewlocales [5].

Figure12-AndroidStudioIDE

5.4EmbedBluetoothcommunicationCodeintoGoogleMaps

AfterwritingBluetoothcommunicationcodeonAndroidStudioIDE,furthermoduleslistedbelowwereaddedtoconnectGoogleMapsAPIwebservicewiththeHC-06Bluetoothmodule.

(1) ApkTool(2) UltraEdit(3) Qihoo360APKSigner(4) App-debug.apk

TheApkToolwasrunonterminalusingAndroidStudioIDEtoinsertpermissionforthenavigationsystem.ThescreenshotofterminalisprovidedbelowinFigure13.Qihoo360APKSignerwasusedtoapplysignaturestothenewAPKAtthispoint,thedevelopmentoftheappintheAndroidStudioIDEwassuccessfullycompleted.


Figure13-Terminalscreen

5.5CommunicationbetweenArduinoUnoandBluetoothModule

EVRTechchoseArduinoUnomicrocontrollerasitiscompatiblewiththeopen-sourceArduinoSoftware(IDE),whichmakesiteasytowritecodeanduploadittotheboard.TheenvironmentiswritteninJavaandbasedonprocessingandotheropen-sourcesoftware[6].

Figure14-ArduinoIDEscreen

AsshowninFigure15below,theBluetoothmoduleisconnectedtoArduinoUnowithdupontline.TheconnectionsbetweeneachpinintheHC-06andtheArduinodevelopmentboardisasfollows:-VCC:connectto5VontheArduino-GND:connecttoGNDontheArduino-TXD:connecttoRXontheArduino-RXD:connecttoTXontheArduino


Figure15-ArduinoIDEconnectedtoBluetoothmodule[7]

Figure16-ArduinoIDEconnectedwithDupontline


5.6OLEDDisplayUnit

Figure17-AdafruitOLEDDisplay[8]

EVRTechchoseOLEDdisplaysforbeingsmall,onlyabout1"diameter,(approximately0.96”)asshowninFigure17above,butveryreadableduetothehighcontrastofanOLEDdisplay.Thisdisplayismadeof128x64individualwhiteOLEDpixels,eachoneisturnedonoroffbythecontrollerchip.Becausethedisplaymakesitsownlight,nobacklightisrequired.ThisreducesthepowerrequiredtoruntheOLEDandiswhythedisplayhassuchhighcontrast[8].TheDisplayiscompatiblewiththemicrocontroller,ArduinoUnoandconsumespowerapproximately3.5V.Thedisplayspecificationsarelistedbelow.

Table1-BasicSpecificationofOLEDDisplay[8]


5.7CommunicationofOLEDDisplaywithArduinoUno

TheOLEDDisplaywasconnectedtoArduinoUnoviadupontlineasshowninFigure18andFigure19below.TheconnectionsbetweeneachpinontheOLEDdisplayandtheArduinoUnoboardisasfollows:

-DC:Connectwith11terminalontheArduinodevelopmentboard-RES:Connectwith13terminalontheArduinodevelopmentboard-D1:Connectwith9terminalontheArduinodevelopmentboard-D0:Connectwith10terminalontheArduinodevelopmentboard

Figure18-ConnectedOLEDDisplayandArduinoUno



5.8PowerSupply


TheOLEDdisplayandArduinoUnowillrequireapproximately3.3Vpowersupplyand3.3Vlogiclevelsofcommunication.Thepowerrequirementsdependalittleonhowmuchofthedisplayislit,butonaveragethedisplayusesabout20mAfromthe3.3Vsupply.BuiltintotheOLEDdriverisasimpleswitch-capchargepumpthatturns3.3V-5VintoahighvoltagedrivefortheOLEDs.


5.9ToggleSwitch

Figure21-ToggleSwitch[9]

TheNav-Bsystemwillcompriseofatoggleswitch,whichwillallowuserstoswitchtheOLEDdisplayscreen.Ifauserreceivesanincomingcallontheirmobiledevice,theuserwillgetnotificationontheNav-Bsystem.Whenthecallisended,theusercanswitchthescreen,whichwillresumeagaintoprovidedirectionsfortheirdestination.TheOLEDdisplayallowstheuserstotogglethroughmultipledatascreensviapushingthetogglingswitchontheholdingarm.Thescreenwilldisplaythecurrenttimeofthedayandrouteinformationmetricsasitsdefaultoutput.Usersmaythenaccesstheremainingdistance,speed,andcallandtextinformationviathetoggleswitch.

5.10MechanicalHoldingArmUnit

Physical

Themechanicalarmwillbeattachedtothehelmettogivethecyclistsasaferandmoreconvenientride.Theavailabilityoftheperformancemetricsrightateyelevelwhilecyclingallowstheusertoevaluatetheirperformanceonthego.Itholdsthedisplayintheusers’preferredposition.TheNav-BsystemisstoredinalightweightLexanpolycarbonatebox,thatis10xstrongerthanglass,toprotectthesystem.TheOLEDdisplay,ontheotherhand,willbecoveredwithtwopiecesofplexiglasinbothsideandstoredin3Dprintedframe[10].ThefollowingpartswillbestoredinNav-Bsystembox:


Table2-HoldingArmSpecifications[11][12][13][14]

Parts Dimensions (cm x cm x cm) Weight (grams)

Nav-B Lexan box 17 x 12 x 5 ( subject to change) 136.5 grams

Arduino Uno 6.865 x 5.3 x 1.508 27.95 grams

Oled Display 2.798 x 2.914 x 0.126 2.5 grams

Bluetooth Module 3.69 x 1.605 x 0.2 5 grams

Breadboard 4.7 x 3.5 x 1.0 15 grams

Figure22-3-Dmodelofmechanicalholdingarm[15][16]

Themechanicalarmcanmovehorizontallyorverticallyusinghingejointsforverticalmovement.ApieceofplexiglassisplacedinbothsideoftheOLEDscreentoprotectitfromanyphysicaldamage.

Material

WewilluseABSmaterialforthemechanicalarm.Itisanopaquethermoplasticpolymerplastic,itisstronganddurableevenatlowtemperature.Itisalsogoodresistancetoheatandchemicalsandiseasytoprocess[17].


6.SystemTestPlanTestingisdonetoensurethatthesystemissafefromerrorsasitiscrucialforoursystembecausetheusersdependontheaccuratefunctionalityofoursystem.TomaintainhighqualityoftheEVRTechproducts,thesystemundergoesathoroughtestingprocesstoensurethesystemisworkinginthemannerinwhichitwasintended.Therearefourmainstagesoftestingthatneedtobecompletedbeforeasystemcanbeclearedforuse:unittesting,integrationtesting,regressiontesting,andacceptancetesting[18].

6.1UnitTesting

Unittestingwillbeconductedonindividualcomponentsofthesystemtodetermineeachcomponentisfunctionalasfollows:

SmartphoneApplicationUnitTestPlan

Totestthesmartphone,needtoensure,• ItiscompatiblewithiOSversion8.0andhigherandAndroidversions• ThedeviceiscapabletoconnecttoBluetooth• Thesmartphonehasaccesstotheinternettoruntheapplication• TheapplicationconnectstotheGoogleAPIwebservice

MicrocontrollerUnitTestPlan

Totestthemicrocontroller,needtoensure,• Thesampleprojectswillbeabletorunfirsttogetusedtotheprogrammingstyle• Testtheconnectionsoftheunit• ThedecodingisdonecorrectlyafterBluetoothisintegratedtothemicrocontrollerunit

DisplayUnitTestPlan

Totestthedisplay,needtoensure,• Nophysicaldefect/damage• WiringwithArduinoisdoneproperly• ReceivesdatafromArduino• Abletoshowexpectedoutput


MechanicalHoldingArmUnitTestPlan

Totestthemechanicalholdingarm,needtoensure,• Itiseasilyadjustablebyuser• Itislightweightandcomfortablywearabletotheuser

6.2IntegrationTestingIntegrationtestingallowstheopportunitytocombinealloftheunitswithinasystemandtestthemasagroup[18].Wewillintegrateunitstoensurecorrectdatatransferbetweenthemandensurethefunctionalityoftheproductisasexpected.Todebugourproduct,wewillstartbytestingeachindividualunit.Oncetheunitsareapproved,wewillthenintegratethemonebyoneandwilltestateachleveltoensureproperfunctionality. Firstly,wewillmakesurethattheapplicationisretrievingdatafromtheGoogleAPIsandrequiredinformationissavedforlateruse.Secondly,wewillconnectthesmartphonewithBluetooth,whichisfurtherconnectedtotheArduino,keepinginmindthatbotharetestedandreadytobeused.Then,wewillconnectthedisplayunitwithArduinotooutputthedesiredinformation.Attheend,alloftheunitswillbeplacedinamechanicalholdingarmandgivingallpossiblecombinationsofinputsthroughsmartphoneapplicationandcheckingtheresultedoutputonthedisplayunitwilltestthewholesystem.Inthispartoftesting,thepowerunitisbeingtestedtopoweralldifferentunits.

6.3RegressionTesting

Regressiontestingisthefirstlevelinwhichthecompletesystemistestedasawhole.Thegoalatthislevelistoevaluatewhetherthesystemhascompliedwithalloftheoutlinedrequirementsandtoseethatitmeetsengineeringandqualitystandards.Independenttesterswhohaven’tplayedaroleindevelopingthesystemundertakesystemtesting.Thistestingisperformedinanenvironmentthatcloselymirrorsproduction[18].RegressionTestingisveryimportantbecauseitverifiesthatthesystemmeetsthetechnical,functionalrequirementsthatwereproposedbyEVRTechfortheusers.


6.4AcceptanceTestingThefinallevel,Acceptancetesting(orUserAcceptanceTesting),isconductedtodeterminewhetherthesystemisreadyforrelease[19].Thisisthelastphaseoftestingwheretheuserswilltestoursysteminreal-worldscenariosaccordingtospecifications.

7.Safety

AtEVRTech,weseektodesignproductsthatenhancethequalityoflifeofourcustomers.Todoso,wevaluetheidealsofsustainabilityandthesafetyofourcustomersasourhighestpriority.Itisforthisreasonthatwehaveapproachedeachstageofdevelopmentwithcaution.

EachcomponentoftheNav-Bsystemhasbeendesignedkeepinginmindthesafetyofitsusers.ThedisplayhasbeenlimitedtousingOLEDscreenstohaveasignificantlybrighterdisplay[23].Furthermore,inordertoensurethatthescreenremainsshatterproof,thescreenwillbecoveredbyathinfilmofPlexiglastopreventanyglassparticlesfromcausingharmtotheuser.Theholdingarmplaysthemostvitalroleinensuringthesafetyofourcustomers.ThemajorityofthearmwillbedesignedusingABSplastic,whichisbothlightandsturdy[26].Rubbercoatingwillbeprovidedaroundthemicrocontrollerhousingunittopreventanyelectricaldischarge.Thearmitselfisdesignedsuchthatithasanumberofventsonthelowerendthatprovidearouteforheatdissipation.However,themostsignificantattributeoftheholdingarmisitsflexibility,whichallowsausertomovethescreenverticallyinfrontoftheireyesaswellasmovethescreencloserandfurtherawayfromtheireyes.

8.ConclusionThedesignspecificationslistedinthisdocumentwillserveasaroadmapforEVRTechintheproductionandimplementationoftheNav-Bsystem.Thedesignspecificationsprovidedincludespecificinformationaboutindividualcomponents,theircompatibilityandajustificationoftheiruse.

Basedonthefunctionalspecificationdocument,thisdocumentwillserveasaguidelinewhenimplementingallfunctionrequirements.Thetestplanwillhelptoensurethatthedesignspecificationsaremetandthatthemodelisinworkingorder.AtEVRTech,ourteamisfullycommittedtotransformcyclingintoasmarterandsaferexperience.


References

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[2]"A000073|ArduinoUnoR3SMD",Rpelectronics.com,2016.[Online].Available:http://www.rpelectronics.com/a000073-arduino-uno-r3-smd.html.[Accessed:11-Mar-2016].

[3]"HC-05FC-114andHC-06FC-114.Part2–BasicATcommands|MartynCurrey",Martyncurrey.com,2015.[Online].Available:http://www.martyncurrey.com/hc-05-fc-114-and-hc-06-fc-114-part-2-basic-at-commands/.[Accessed:11-Mar-2016].[4]2016.[Online].Available:https://www.olimex.com/Products/Components/RF/BLUETOOTH-SERIAL-HC-06/resources/hc06.pdf.[Accessed:11-Mar-2016].[5]"Configuration|AndroidDevelopers",Developer.android.com,2016.[Online].Available:http://developer.android.com/tools/studio/studio-config.html.[Accessed:11-Mar-2016].

[6]"Arduino-Software",Arduino.cc,2016.[Online].Available:https://www.arduino.cc/en/Main/Software.[Accessed:11-Mar-2016].[7]"BluetoothModuleHC-05orHC-06(Master/Slave)",Bitstoc.com,2016.[Online].Available:http://www.bitstoc.com/index.php?route=product/product&product_id=62.[Accessed:11-Mar-2016].[8]A.Industries,"Monochrome0.96128x64OLEDgraphicdisplayID:326-$19.50:AdafruitIndustries,Unique&funDIYelectronicsandkits",Adafruit.com,2016.[Online].Available:https://www.adafruit.com/product/326.[Accessed:11-Mar-2016].[9]L.Summers,"Arduino:GettingStartedwithButtons!–FileArchiveHaven",Filearchivehaven.com,2014.[Online].Available:http://www.filearchivehaven.com/2014/06/16/arduino-getting-started-with-buttons/.[Accessed:11-Mar-2016].[10]"LexanPolycarbonateSheet-.093Inchx18Inchx24Inch|TheHomeDepotCanada",Homedepot.ca,2016.[Online].Available:https://www.homedepot.ca/en/home/p.polycarbonate-sheet---093-inch-x-18-inch-x-24-inch.1000171918.html.[Accessed:11-Mar-2016].


[11]A.Industries,"ArduinoUnoR3(Atmega328-assembled)ID:50-$24.95:AdafruitIndustries,Unique&funDIYelectronicsandkits",Adafruit.com,2016.[Online].Available:https://www.adafruit.com/products/50.[Accessed:11-Mar-2016].[12]B.(White),B.(White),B.(Clear),S.Kit,S.Mini,J.10andJ.10,"Breadboard-MiniModular(White)-PRT-12043-SparkFunElectronics",Sparkfun.com,2016.[Online].Available:https://www.sparkfun.com/products/12043.[Accessed:11-Mar-2016].[13]2016.[Online].Available:http://www.tinyosshop.com/datasheet/Tinysine%20Serial%20Bluetooth4%20user%20manual.pdf.[Accessed:11-Mar-2016].[14]"SerialBluetooth4.0BLEModule-iBeacon",Tinyosshop.com,2016.[Online].Available:http://www.tinyosshop.com/index.php?route=product/product&product_id=705.[Accessed:11-Mar-2016].[15]"Tinkercad|Create3DdigitaldesignswithonlineCAD",Tinkercad,2016.[Online].Available:https://www.tinkercad.com/.[Accessed:11-Mar-2016].[16]"Oops404notfound",Ock1.dromikf.top,2016.[Online].Available:http://ock1.dromikf.top/a/mechanical-hinge-joint/).[Accessed:11-Mar-2016].[17]"PlasticsEurope-Acrylonitrile-Butadiene-Styrene(ABS)-PlasticsEurope",Plasticseurope.org,2016.[Online].Available:http://www.plasticseurope.org/what-is-plastic/types-of-plastics-11148/engineering-plastics/abs.aspx.[Accessed:11-Mar-2016].[18]"Blog",SegueTechnologies,2016.[Online].Available:http://www.seguetech.com/blog/2013/07/31/four-levels-software-testing].[Accessed:11-Mar-2016].[19]"Blog",SegueTechnologies,2016.[Online].Available:http://www.seguetech.com/blog/2013/07/31/four-levels-software-testing].[Accessed:11-Mar-2016].


Appendix

TechnicalDataSheetofOLEDDisplay

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