1. Wireless sensor networks(WSN)

2. Presented To: Dr Imran
Presented By : Syed Sajid Ali
Reg No: 11-MDTLC-0513
Class No: 37

3. Types of wireless networks
1 w-wan (GSM,3G,4G)
2 w-lan ( 802.11 “wifi”)
3 w-Man (802.16”wimax”)
4 w-pan ( bluetooth, zig b ,UWB)

4. WSN
 WSN consists of hundreds to millions small,
inexpensive, low-power, distributed devices, which are
capable of local processing and wireless
communication.
 These small devices are known as nodes
 WE have two types of nodes
 Sensing node
 Sink node

5.  WSNs commonly comprise of tens, hundreds or even
thousands minimal effort, low power and
multifunctional sensor nodes that are deployed in the
sensor fields.
 The sensor fields are the area of our interest where we
want to deploy our sensor network. The sensor fields
may range from land, water, mountains, forests,
environment, agriculture, tracking, military and home
monitoring.
 These sensor nodes or motes (a sensor node with its
complete architecture) monitor the environment,
collect the data and then pass this data to the BS.


6.  They are commonly used for monitoring of
environment based on different parameters
such as pressure ,temperature, direction
speed etc

8. Parts of sensor nodes
 Computing : consist of microprocessor used
for controlling senor and executives
communication protocol.
 Communication: It consists of a short range
radio which is used to communicate
with neighboring nodes and the
outside world

9. Sensing : It link node to outside world
Power supply: Consist battery supply power to
other parts

10. Application of (WSN)
 Wireless sensor network can be use for monitoring
applications in military, medicine, agriculture, industrial,
transportation, environmental and smart home
monitoring.

11. Smart Home Monitoring
 Through wsn we can connect all the appliances of our
home like electric lights, alarms, T.V etc. sensing of
movements in any area/room can automatically turn-
on the lights and it can also adjust the temperature of
that room.
 Moreover, it also provides us remote monitoring of
residence e.g. we can also control different electrical
appliances by our cell-phone and similarly if the
sensors sense some activity going on at our house then
it can also send us an alarming message/e-mail to our
cell-phone.

12. Application in military
 Enemy detection
 Enemy tracking
 Area monitoring

13. Environmental application
 Air Pollution Monitoring
 Wild-Fire/Forest-Fire Detection
 Water Quality Monitoring
 Snow-Level Monitoring

14. Challenges in WSN
 Ad hoc deployment
 Unattended operation
 Untethered
 Energy constrained nature
 Routing

15. AREA OF RESEARCH IN WSN
 New routing protocol
 Data management /agregation
 Target tracking
 Topology control
 Power issues
 Mac protocols
 Coverage and connectivity

16.  We are working to improve the power efficiency by
 Clustering
 Cluster head selection
Clustering: Dividing the task among the node and making
group of node to perform that task
Cluster head selection: selection of head in cluster so that it may
can communicate with Bs(sink node) rather then cluster.

18. Fuzzy logic

19. Simulators for wireless sensor networks
 Ns2
 Glomosim
 Matlab
 Opnet

20. Q..??