ieee 2012 projects for m tech btech ece eee embedded systems@ srcembedded solutions- hyderabad. web:www.srcembedded.com, ph-8297 313 858 mail:srcembedded@gmail.com

1. Building Lighting Automation through the Integration of DALI
with Wireless Sensor Networks
Abstract:
Building automation systems can also be used to control lighting; however, high initial
and maintenance costs, the apparent complexity of these systems, and concerns about the
interoperability of lighting systems and other building systems have limited such applications.
Benefits of using building automation systems to control lighting include the ability to track
occupancy and energy use, the ability to monitor and control lighting throughout a large facility,
and the ability to minimize peak demand. The potential for energy savings has made the use of
automated lighting controls such as timers, occupancy sensors, and photo sensors common in
modern buildings. This paper focuses on the integration of Digital Addressable Lighting
Interface (DALI) devices in wireless sensor networks.
Existing System:
In this system the building automation is controlled by using different sensors for
different parameters. And the controlling is done automatically when any of the parameters get
abnormal. So that status can’t be monitored from remote place. By this method the user or house
owner have to be in home to know the status. Hence we go for new system.
Proposed System:
In this system, using Zigbee technology the building automation like lighting,
temperature checking and air conditioning is done by using DALI interface. Here a system with
sensors are interfaced with the Microcontroller which is used to monitor the light source,
temperature and moisture content of a room are gathered and transmitted to the monitoring
section using Zigbee wireless communication. From the receiver end they can control the system
with separate address. So the control data will reach the proper node and after receiving the data

2. the controller will controls the devices. A LCD display is used in every section for displaying the
status.
Block Diagram:
Node 1:
Power
Supply
2.4GHZ
100
LDR sensor
80
Micro
60
Temperature
Sensor
20
0
LCD
Display
Node 2:
West
40
Controller
AT89C51
Humidity
sensor
East
North
Driver
Circuit
1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
Driver
Circuit
Electrical
devices
Electrical
devices

3. Power
Supply
2.4GHZ
100
LDR sensor
80
Micro
60
Temperature
Sensor
East
West
40
Controller
North
Driver
Circuit
20
AT89C51
0
Humidity
sensor
1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
Driver
Circuit
LCD
Display
Electrical
devices
Electrical
devices
Control section:
Power
Supply
2.4GHZ
100
80
Micro
60
East
Controller
40
20
AT89C51
MAX
232
0
1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
Hardware Requirements:
West
North
PC

4.  8051 Microcontroller
 Zigbee
 Temperature, Humidity, LDR sensors
 Relay Driver
 Max232
 LCD
 Electrical devices
 PC
Software Requirements:
 Keil C Compiler
 Embedded C
Advantages:
 Using Zigbee technology, the control is easily transmitted with individual address.
 Its response time is higher than other wireless communications.
Applications:
 This system can be used in any conditions and anywhere.
 Multiple numbers of devices can be interfaced with this system.