This document describes a building lighting automation system that integrates Digital Addressable Lighting Interface (DALI) devices with a wireless sensor network. Sensors such as light dependent resistors and infrared sensors detect light levels and human presence. A microcontroller receives analog sensor signals, converts them to digital, and encodes them for transmission via radio frequency to a receiver. The receiver decodes the signals and displays the output on an LCD. Relays control electrical loads like lights based on the sensor data and automate turning loads on/off to save energy. The overall goal is to remotely monitor and control building energy consumption.

1. BUILDING LIGHTING AUTOMATION
THROUGH INTEGRATION OF DALI WITH
WIRELESS SENSOR NETWORK

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.