2. INTRODUCTION
Energy demand is the rising problem
in today’s world.
So it is necessary to solve the energy
crisis problem.
It is essential to monitor the energy
consumption in Buildings.
3. This project focuses on the integration of
Digital Addressable Lighting Interface
(DALI) devices in wireless sensor
networks – e.g. heating ventilation and air
conditioning, lighting control, alarms, etc.
Final building automation system has
different subsystems which are finally
taken to an integrated building
management system.
The main purpose of this project is to
provide a wireless sensor network which
acquires the data from the sensing
4. Where the automation control
technique automatically detect the
human interference neglecting the
object or material things, it turns
on/off the electronic appliances.
And also we apply automation
lighting technique where depending
upon the intensity of light the sensor
controls the objects.
5. BLOCK DIAGRAM Tx:
M
LDR I
C
R HT12E
O
C
O
Reset N
T
R
O RF TX
L
X tal L
E
R
6. BLOCK DIAGRAM Rx:
M LCD
LOAD1 RELAY1
I
C
R
O
C
O
LOAD2 RELAY2 N HD12D
T
R
O
L
L
E RF Rx
LOAD3 RELAY3
R
7. Sensor
Sensor is used to sense the physical
quantity and convert in to electrical signal.
Here LDR and IR sensor are used.
LDR is light dependent resistor, it is used
to sense the light intensity.
when the light intensity is more the lamps
are turned off and when it is less the lamps
are turned on.
8. X-tal Crystal Oscillator
A crystal oscillator is an electronic
oscillator circuit.
The Oscillator uses the mechanical
resonance of a vibrating crystal of
piezoelectric material to create an
electrical signal with a very precise
frequency.
9. Microcontroller
We can use many type of controller like
PLC, PID microcontroller
But here we are going to use embedded
controller.
From the sensor you are getting analog
signals so we have to convert the analog
signal in to digital signal by using opt
coupler.
10. Encoder/decoder
An encoder is a device, circuit,
transducer, software program,
algorithm or person that converts
information from one format or code
to another.
A decoder is a device which does the
reverse operation of an encoder,
undoing the encoding so that the
11. RF Transmitter/Receiver
Transmitter transmits the data when
the signal Tx ready is in high.
When the signal Txmt is high the
receiver is ready to receive and the
signal Rx ready goes to high and it
receives the data.
An Rf receiver receives the signal
from the atmosphere, from its own
12. LCD
It displays the output from thee
microcontroller.
To Verify the Entire Process of
working Carried out.
13. Relay
Relay is a electromechanical switch.
After giving supply nc gets changed
in to no and no gets changed into nc.
We can use many no of relays
depending upon the application used
14. Conclusion
The major advantage of this project is
to reduce the man power, power
consumption cost.
It is very useful in urban houses,
offices, hospitals, Old and Physically
challenged people.
