H.A.C.S.

The Home Appliance Control System

Presented by The Awesome GroupPresented by The Awesome Group

What is HACS?

A home appliance control system which uses a remote system such as a mobile phone or PDA to monitor, control, and coordinate home appliances such as your security system, oven, TV, etc.

Assumptions and Dependencies

Infallibility No Power Failures No Network Failures Each Appliance has Sufficient Power and a Dedicated CPU Wireless Network is the same as LAN HACS has an Internet Connection Perfect Cellular Reception Sufficient Hardware

Requirements

HACS should Allow users to check the status of their

appliances, even when not at home Activate and deactivate appliances Alert users and emergency

departments to critical malfunctions Be able to accept any HACS

compatible appliance

Requirements List

(1) Appliance Control – Appliances, devices such as an oven, microwave, air conditioner, or sprinkler, can be controlled by a home owner in a remote location. That is the user may set the different attributes (e.g. oven temp, AC fan speed, sprinkler settings etc.) for each appliance from a wireless device(2) Adaptability/Detection – The system will be able to detect changes within the home and maintain the user settings. (3) Manually Adaptable – The user can set system set the status of different appliances manually and user commands have precedence over automatic commands.(4) Communication – HACS should be able to communicate with all appliances.(5) Safety – HACS should maintain the safety of the user’s home and person at all times. Devices should be maintained in non-hazardous states.

The Big Picture

User UserInterface

HACS

Use Case Diagrams(for traceability)

Appliance

setTimer

GetTemp

SetTemp

Oven

ToggleOn/OffUser

setTemp

setTemp

AC

ToggleOnOff

UserAppliance

setStatus

getStatus

toggle

Alert

setStatus

getStatus

toggle

Alert

HACS

Emergency Service

Alert

• Bad!

Use Case Diagram: Over AllUse Case Diagram for Hacs

PoliceDept

FireDept

Register Wireless

Emergency Alert

Login

User

Set Status

Get Status

Manage Status

<<uses>>

<<extends>>

<<extends>>

Remove Appliance

Add Appliance

Appliance

Register Appliance

<<uses>>

<<extends>>

<<extends>>

Use Case: Log In

•What if your neighbor down the street decided to “play a joke” and turn on your oven!

LoginHACS

• HACS must be secure!• Nobody other than the owner should be able to modify an appliance’s status

Sequence Diagrams: Log In

User : User:UserInterface :HACS :UserRecord

issuesCommand

connect(id)

verify(id)

returnVerification

Use Case: Get Status

User

GetStatus

Appliance

• Is the garage door open?• Did you leave the oven on?• The user wants to know how the appliances are operating at any given time!

Manage Status <<extends>>

Sequence Diagrams: Get Status

In general, this should represent a simple sequence of events

User: User:UserInterface :HACS :Appliance

selectApp

getStatus(app,uid)

Login

getStatus()

returnStatus

returnStatus

displayStatus

Sequence Diagrams: Get StatusBut what if access is denied?

: User:UserInterface :HACS :Appliance

selectApp

getStatus(app,uid)

Login

displayDenied

loginDenied

Use Case: Set Status

• Now that you know what the appliance is up to, don’t you want to change what it is doing?

User Set Status

Appliance

Manage Status <<extends>>

Sequence Diagrams: Set Status

:HACS : User

:UserInterface :Appliance

selectApp

displayStatus

setStatus(app,uid,attribute, value)

Login

setStatus(attribute,value)

returnStatus

returnStatus

Use Case: Register Appliance

User Remove Appliance

Appliance

Register Appliance

<<extends>>

• Register Appliance is extended by Add/Remove appliance use cases to handle registration interactions within the HACS system.

Add Appliance

<<extends>>

Sequence Diagram: Add Appliance

:Interface :HACS xyz:Appliance

setup appliance

provide appliance identification details

configure appliance settings

detect appliance

provide ACK

add appliance

provide response

set range limits

store range limits

User : User

Sequence Diagram: Remove Appliance

:UserInterface :Hacs :appliance

request remove appliance

request remove appliance

remove appliance

notify

Send new status

notify

User : User

Use Case: Register Wireless

User

register wireless Wireless

• The user registers a wireless device with HACS.

Sequence Diagram: Register Wireless

:HACS xyz:Appliance

add user

provide identification details

add device

send confirmation

User : User

Use Case: Emergency Alert

Fire_Department

Police_Department

Emergency_Dept

notify

Intruder_DetectorAlert_controller

Fire_Detector

• Reuse!

Use Case: Evolved Emergency Alert

PoliceDept

FireDept

Emergency Alert

Appliance

Sequence Diagram: Alert System

:Hacs :Device_interface

abc:Alert_controller

emergency: Emergency_dept

:Police :Fire

create_sockets()

start_threads()

start_sensing()

forward request on socket

Demultiplex_request()

connect to data base

connect to data base

Notify_request()

will use some api or sockets for communication

wid specific department

Hacs notified on socket

Here it is assumed devices communicate on

sockets

Hacs notified on socket

Class Diagram: Alert System

Emergency_Dept

tel_pol[5] : int = defaulttel_fire[5] : int = defaultThread_main : thread = nullalert_controler : socket = nullport_alert : socket = nullip_alert : int = defaultname2

Demultiplex_req()Connect_db()notify_dept()

classes interact with socketsAlert_Controller

Alert_controller : socket = nullthread_main : Thread = nullthread_sense : Thread = nullport_alert_controller : int = defaultipaddress_alert_controller : string = default

Start_sensing()Stop_sensing()create_sockets()forward_request()start_threads()

HACS

notify()

CRC Cards: ApplianceAppliance Object

• Interface between HACS and specific appliances

• HACS

CRC Cards: OvenOven Appliance

• Report Exceptions• Change Temperature• Change Mode• Set Timer• Turn On/Off

• HACS• Alert Controller

CRC Cards: Garage DoorGarage Door Appliance

• Open• Close• Report Exceptions

• HACS• Alert Controller

CRC Cards: LightLight Appliance

• On• Off• Set Intensity• Report Exceptions

• HACS• Alert Controller

CRC Cards: Alert Controller

Alert Controller

Object

• Control Alerts• Pass Exceptions to HACS• Alert Emergency Departments

• HACS• Appliance• Appliance subclasses• Emergency Department

Class Diagram: HACS System

Note hid will contain perhaps an internet address for the Hacs system

FireAlarm

detect()

GarageDoor

open()close()

Windows

setSecurity(on_off)detectMotion()

lights

on()off()setIntensity(value)

UserInterface

currentWindowuidhid

Connect(uid)displayWindow(window)getStatus(hid, appliance)setStatus(hid, appliance, attribute, value)getAppliances(hid)

UserRecord

user_id

setId(user_id)getId()

HACS

hiduserRecordsappsEMservicesconnections

getStatus()setStatus()addAppliance()delAppliance()notify()Login()

applianceappIdattributeshid

get(attribute)set(attribute, value)alert(hid)

<<actor>>

The END!

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