1. DEPARTMENT OF ECM
PERFORMANCE EVALUATION OF
WIRELESS SENSOR NETWORKS
BASED ON ZIGBEE TECHNOLOGY IN
SMART HOME
By
G.Raghu Kiran
13205208
M.Tech (WCSN)

2. CONTENTS
Introduction
Home Appliances Control In Smart Homes
Operation Mode In Smart Home
The Concept Of Smart Home
Zigbee
ZigBee Protocol Stack
Advantages of Zigbee

3. INTRODUCTION
The integration of devices and an intelligent networking in
a home can make it smart by allowing us to manage energy
in a way that is appropriate.
To better control of energy consumption in the Smart
Home, the Home Area Network (HAN) is used to collect
sensor information.
Zigbee is a high technology for the Smart Home network
communication.

4. HOME APPLIANCES CONTROL IN SMART HOMES
It is necessary to investigate the electric power sources
that support the normal operation and management in a
house.
It is necessary to know what kind of configuration and
control are indispensable to build a smart home.
Architectural and functional requirements on behalf of
utilities in the design of smart homes should be taken
into serious consideration.

5. OPERATION MODE IN A SMART HOME
The smart control mainly consists of three types of scenarios:

When the residents stay at home.

When there is nobody at home.

When the meter receives the notification of demand-response
from utilities.

7. 
ZigBee and IEEE 802.15.4 are standards-based protocols that
provide the network infrastructure required for wireless sensor
network applications.

For sensor network applications, key design requirements
support communication between large numbers of devices in
multi-application environment.

8. APPLICATIONS

Energy Management and Efficiency

Home Automation

Building Automation

Industrial Automation

9. ZIGBEE PROTOCOL STACK

10. ZIGBEE NETWORK
ZigBee networks include the following device types:

Coordinators

Routers

End devices

11. ADVANTAGES







Low cost
Secure
Reliable and self healing
Flexible and extendable
Low power consumption
Easy and inexpensive to deploy
Global with use of unlicensed radio bands

12. A SMART HOME SOLUTION WITH ZIGBEE

13. Design and Implementation
The structure of Wireless Sensor Networks in the
smart home requires three different devices:
Coordinator, Router and End Device.
All home environments can then be monitored and
the required data can be delivered to the coordinator.
Then appropriate control commands are sent
through coordinator to home appliances.

14. 
In this environment, the coordinator is integrated with the home gateway
that handles the control data in the mesh network.

The household devices are attached to the router or the reduced function
node module.

In order to address the problem of interconnection between appliances and
the Zigbee wireless module, we adopted the SAANet Protocol.

15. EXPERIMENTAL SETUP
The experimental system is divided into three main parts:
• A user interface communicates with the user via the computer
and displays the results.
• A coordinator collects sensor readings to the user.
• An end device consists of two parts: sensor interface and
ZigBee interface. The sensor used in this test is a temperature
sensor.

16. Operation Mode in a Smart Home
In terms of energy management, the operation mode is intended for
two categories:
Home Appliances
oHVAC system integrated with thermostats and Infrared/motion sensors.
oDaily appliances with thermostat.
oLighting system connected with temperature sensors.
oDigital entertainment appliances with Infrared or motion sensor.
Renewable energy sources.
oPV system/wind turbine.
oPHV/PHEV(plug-in hybrid vehicle)

17. Technology Requirements of utilities in a Smart
Home
Home Area Network in secure communication with utilities

18. Networking patterns and technology for home
energy control

19. The network infrastructure is the basic skeleton for smart home
construction. The smart home is functionally categorized into two main
networks:
• Broadband communication network
• Control network
The broadband communication network is mostly attached to home
entertainment devices.
The control network mainly supervises the regular operation for all
kinds of home devices such as the switching-on/off for lamps, start/stop
of air-conditioner.

20. Technically, two types of networking techniques are widely
adopted in the field of home appliance control.
Directly transmit data over power lines. The mainstream protocol is
PLC (Power Line Communication).
Exchange data between sender and receiver in a wireless. The
representative protocols in that case are Bluetooth, 802.15.4/ZigBee .

21. CONCLUSION

There are some factors such as a distance between the end device and the coordinator and
also some obstacles which affected to the RSSI performance.

On the contrary, the presence of a variable speed drive does not obstruct the signal sent
by the Zigbee modules.

All in all, the quality of wireless link of WSNs based on Zigbee technology depends on
the distance between nodes, the location of each sensor nodes and obstacles between
them.

All these communication systems Wi-Fi, Zigbee and Bluetooth operate at the same
frequency bands. However, the interference problem between Zigbee and other devices
can occur.

In this context, future research will be based on the possibility of coexistence between
these different wireless protocols in a smart home.