PowerPoint Presentation
Nicolas Bailey GodfreyJoshua EarlyMarc GarciaDaniel KrummenGroup
23Sponsored By:
Close to Home (C2H)
Objectives and GoalsEnergy
SavingsSecurityAutomationConvenience
Specifications and RequirementsParameterValuePositive Energy
Savings+40%Locking Method Error Rate0%Locking Response
Time100msPolling Time Between Actions5 minClose to Home
SystemHubAndroid AppModuleOnline DatabaseModuleModuleModuleClose to
Home SystemHubAndroid AppModuleOnline
DatabaseModuleModuleModuleAndroid ApplicationGoals
VersatileLightweightSimpleQuick and Effective
Android ApplicationPlatformAndroid 4.0 Ice Cream SandwichSimple,
natural, powerful public APIs
Secure management of credentialsAndroid 4.0 makes it easier for
applications to manage authentication and secure sessions. A new
keychain API and underlying encrypted storage let applications
store and retrieve private keys and their corresponding certificate
chains. Any application can use the keychain API to install and
store user certificates and CAs securely.- Android Developers
Website
Android ApplicationPlatformFree SDKHuge community and developer
supportSimple integration with the Eclipse IDELibrary of virtual
devices useful for testing
Android ApplicationApplications Interaction With the System
Android ApplicationTasks and FeaturesMain GUI to the Close to
Home systemUpdate settings and user permissions
Android ApplicationTasks and FeaturesTwo Classes of usersHead of
HouseholdFull control of all devicesControl of tenant user
permissionsTenantOnly has permission to control devices the Head of
Household allows Android Application
Class DiagramAndroid ApplicationsUser InterfaceSimpleQuickEasy
to Use
Close to Home SystemHubAndroid AppModuleOnline
DatabaseModuleModuleModuleWeb Server BasicsBridge the gap between
app and hubUtilize web hosted programming to relay data from hub to
app and commands from app to hubUtilize web hosted database to keep
a live record of the various hub statuses
Web Hosted ProgrammingJavaStrongly typedRigid I/OMore
SecureWorks well with AndroidWeakly typedLoose I/OBetter Server
SupportCross-Platform We are opting for Java in order to work with
one language throughout the entire project and facilitate our
class-oriented design.
DatabaseEmbed in deviceCan be tricky to keep synched with
multiple usersEmbed on webCan handle multiple users simultaneously
on the same database.
Design FundamentalsMySQLDesigned based on the class system of
the hub based on specific roomsWill be updated by the hub and
viewed by the Android app.JavaDesigned to handle I/O of data and
commandsClass system to facilitate data sorting by class.Close to
Home SystemHubAndroid AppModuleOnline
DatabaseModuleModuleModulePoint of Contact for
ModulesUplinkSchedulingPeriodic Module Polling
C2H HubTopologies
Topologies
Hardware ChoicesRaspberry PiATmega328(Arduino
Uno)BeagleBoneProcessor700MHz ARM1116MHz720MHz
AM3359RAM512MB32KB256MBGPIO8xGPIO14xDIG, 6xANALOG65xGPIO
(!)Floating?YesYesYesOp. Volt.5V5V5VUART?YesYesYesLAN?On-Boardw/
ExpansionOn-BoardSize3.4 x 2.22.7 x 2.13 x 3Weight45 grams39.69
grams37 gramsPrice$40.00$36.00$59.00
Hardware ChoicesRaspberry PiATmega328(Arduino
Uno)BeagleBoneProcessor700MHz ARM1116MHz720MHz
AM3359RAM512MB32KB256MBGPIO8xGPIO14xDIG, 6xANALOG65xGPIO
(!)Floating?YesYesYesOp. Volt.5V5V5VUART?YesYesYesLAN?On-Boardw/
ExpansionOn-BoardSize3.4 x 2.22.7 x 2.13 x 3Weight45 grams39.69
grams37 gramsPrice$40.00$36.00$59.00
OS/Language ChoicesCentOS (Linux)Set up once and forgetEasily
distributableStable, fast, and server-friendlyFree!
JavaCompatible with CentOSTies in with app and databaseSoftware
multi-threadingClose to Home SystemHubAndroid AppModuleOnline
DatabaseModuleModuleModuleElectrical
Components120V240VOccupancyComputerLockIn-Wall
Flow ChartMCUMSP430F2121
Low Power:Active: 200 AStandby: .7 ARam: .1 AFamiliarityC
LanguageAdaptabilityCC WirelessEase of ImplementationLow
CostSubstantial Memory
WirelessCC2520ZigbeeLow PowerEase of ImplementationLow Cost
Antenna2.4 GHzCeramicVery Small Foot Print
120V/240V ModuleStandard 3-Wire SocketRelay ActivatedAmmeter
detect on/offWall Powered
120V/240V Module
120V/240V Module
In-Wall ModuleStandard Light SwitchRelay ActivatedAmmeter detect
on/offWall Powered
In-Wall Module
Occupancy ModuleLaser Trip WireDouble Laser Transmit
DesignPhotocell ReceiverIncrement/Decrement CounterBattery
Powered
Occupancy Module
Occupancy Module
Computer ModuleSends Soft Shutdown command via USBWill Monitor
On/Off StateIdeally Flash Drive Form FactorPowered by Computer
4 in.8 in.2 in.Lock ModuleModification to existing lock
systemServo ControlledFS5106B 4.8V: 69.6 oz-in (5.01 kg-cm) 6.0V:
83.5 oz-in (6.01 kg-cm)Micro Switch State DetectionBattery
Powered
Lock Module
Successes and DifficultiesProject BudgetPartCost Per
UnitQty.TotalAtmel Microcontrollers$3.0050$150.00Blank Circuit
Boards (30 Piece)$23.002$56.00Various Resistors and
Capacitors$20.001$20.00Raspberry Pi (Hub)$35.001$35.00XBee Radio
Module$25.0050$1250.00AA Batteries (20
Pack)$12.752$25.50Total:$1536.50Initial BudgetProject
BudgetPartCost Per UnitQty.TotalAtmel
Microcontrollers$3.0050$150.00Blank Circuit Boards (30
Piece)$23.002$56.00Various Resistors and
Capacitors$20.001$20.00Raspberry Pi (Hub)$35.001$35.00XBee Radio
Module$25.0050$1250.00AA Batteries (20
Pack)$12.752$25.50Total:$1536.50Modified BudgetPartCost Per
UnitQty.TotalAtmel MicrocontrollersBlack Circuit BoardsRaspberry Pi
(Hub)$40.001$40.008GB SD Card (Hub)$8.951$8.95Slice of Pi Board
(Hub)$16.991$16.99Xbee 1mW Wire (Hub)$28.951$28.95AA Batteries (20
Pack)$12.752$25.50Various
Resistors/Capacitors$20.001$20.00Total:
Initial PlanProgression(Chart of Progression Here)Whats
Next?Make transmission reliable
Questions?
