The document presents a project on an Android-based wireless load control and monitoring system designed to manage home appliances, emphasizing ease of use for the elderly and physically challenged individuals. It details the problem statement, high-level design, and modular classification, along with various components such as fire and intruder sensors connected to a microcontroller. Implementation details, including sequence diagrams and pseudocode, demonstrate how users can control devices like fans and lights through an Android app while integrating safety alerts via SMS notifications.

1. “Android based
Wireless Load Control and Monitoring”
DAYANANDA SAGAR ACADEMY OF TECHNOLOGY
AND MANAGEMENT
Dept. of Information Science & Engineering.
By,
Thrishma Reddy.S
(1DT11IS044)
Bhuvana A.U (1DT11IS009)
Mohammed Mujahid Afsar
(1DT11IS025)
Under the guidance
of
Prof. Supreetha Pai
(Assistant Professor)

2. CONTENTS
• Problem Statement
• High level design
i)Modular classification
ii)System architecture
iii)Data flow diagram
• Detailed design
i)Use case diagram with scenario
ii)Sequence diagram
iii)Activity diagram
• Implementation
i)Modular design
ii)Pseudocode
• Gantt chart

3. PROBLEM STATEMENT
• While people are pursuing ever-growing high quality of their lives today.
This leads to more and more facilities and home appliances poured into
their buildings. How to control and manage these versatile facilities and
appliances in a house?
• Usually conventional wall switches are located in different corners of a
house and, thus necessitate the need of manual operations like pressing to
turn the loads on or off. It becomes very difficult for the elderly or
physically handicapped people to operate them. How to help them?

4. HIGH LEVEL DESIGN

5. MODULAR CLASSIFICATION
Fire
sensor
GSM
module
Notification received
on the phone through
SMS
SMS converted to
speech
• Fire Sensor Module
Intruder
sensor
GSM
module
Notification received
on the phone through
SMS
SMS converted to
speech
• Intruder Alarm Sensor Module

6. • Fan Module
Fan
OFF
ON
Android
Phone
Lights
OFF
ON
Android
Phone
• Lights Module

7. SYSTEM ARCHITECTURE
(P89V51RD2)

8. DATA FLOW
DIAGRAM

9. DETAILED DESIGN

10. Home
appliances
system
LPG gas
fan
light
intruder
water level
<<include>>
Set values
ON/OFF
Security
alert
(USER)
Alert
police
Set values
ON/OFF
set value
ON/OFF
Fire alert
Alert notification
(USER)
Smoke
alert
Set values
ON/OFF
<<include>>
<<include>>
<<include>>
<<exclude>>
<<exclude>>
<<exclude>>
<<exclude>>
<<exclude>>
user
Fire dept
police
USE CASE DIAGRAM WITH SCENARIOS
<<include>>
<<exclude>> <<exclude>>

11. : Home Owner
:Login :Hardware
1: enter usrname & passwd
5: access
2: send username & passwd
3: authenticate
4: Ack
SEQUENCE DIAGRAM FOR LOGIN

12. : Home Owner
:Microcontroller
:Light
1: select light
2: check status
3: return status
4: display status
6: select options : turn on/off
7: enter value turn on/off
8: set value
9: update
10: ack
11: display result
5: display options
SEQUENCE DIAGRAM FOR CONTROLLING LIGHT

13. : Home Owner
:Microcontroller :Fan
1: Select Fan
2: Check status
3: Return Status
4: Display Status and menu
5: Select Turn on/off
6: Set Values
7: Update
8: ACK
9: Display result
SEQUENCE DIAGRAM FOR CONTROLLING FAN

14. : Home Owner
:Sensor :Microcontroller
: Fire Dept/Police Dept
4: Display warning
1.send signal
2: Return Signal
3: Notify Firedept
SEQUENCE DIAGRAM FOR FIRE ALARM/LPG
LEAKAGE/INTRUDER

15. : Home Owner
:Microcontroller
:Water level
1: select water level
2: check status
3: return status
4: display status
6: select options : turn on/off
7: enter value turn on/off
8: set value
9: update
10: ack
11: display result
5: display options
SEQUENCE DIAGRAM FOR WATER LEVEL DETECTION

16. ACTIVITY DIAGRAM

17. IMPLEMENTATION

18. MODULAR DESIGN
• Fire sensor moduleI(FFS 05)
The Fire sensor is used to detect fire flames . The module makes use
of Fire sensor and comparator to detect fire up to a range of 2 meters. It
uses a input voltage of +5VDC.
• Intruder detection module(PIR SENSOR)
The unit output is high whenever human’s motion is detected. In
simple terms, it is a motion detector. This sensors measure infrared
radiation emanating from objects in the field of view. Apparent motion is
detected when an infrared emitting source with one temperature, such as
human body, passes in front of source with another temperature, such as
wall.

19. CONTD…
• Fan Module
It is directly connected to the microcontroller, it has only two
functions ON/OFF. The user can switch on the fan or switch off the fan
using the android app.
• Lights module
It is directly connected to the microcontroller, it has only two
functions ON/OFF. The user can switch on the light or switch off the light
using the android app.

20. PSEDOCODE
if (IR_1 == 1))
{
LCD_Message( 0x80, " HUMAN ENTERED " );
GSM_Send_SMS( Mb_Num1,"HUMAN ENTERED");
}
if(Float == 1)
{
LCD_Message( 0x80, "WATER LEVEL HIGH" );
GSM_Send_SMS( Mb_Num1,"WATER LEVEL HIGH");
}
if(Gas sensor == 1)
{
LCD_Message( 0x80, "gas leackage" );
GSM_Send_SMS( Mb_Num1,"gas leackage");
}

21. if( Bulb== 1)
{
Bulb_Relay== 1
LCD_Message( 0xC0, " BULB IS ON " );
GSM_Send_SMS( Mb_Num1," BULB IS ON ");
}
if(Fire == 1)
{
LCD_Message( 0x80, " fire " );
GSM_Send_SMS( Mb_Num1,"fire");
}
if(Fan== 1)
{
Fan_Relay==1;
LCD_Message( 0xC0, " FAN IS ON " );
GSM_Send_SMS( Mb_Num1, "FAN IS ON" );
}

22. GANTT CHART

23. THANK YOU