Wireless sensor networks(WSN)

Presented To: Dr ImranPresented By : Syed Sajid Ali

Reg No: 11-MDTLC-0513Class No: 37

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)

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

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.

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

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

Sensing : It link node to outside world

Power supply: Consist battery supply power to other parts

Application of (WSN) Wireless sensor network can be use for monitoring

applications in military, medicine, agriculture, industrial,

transportation, environmental and smart home

monitoring.

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.

Application in military Enemy detection

Enemy tracking

Area monitoring

Environmental application

Air Pollution Monitoring

Wild-Fire/Forest-Fire Detection

Water Quality Monitoring

Snow-Level Monitoring

Challenges in WSN Ad hoc deployment

Unattended operation

Untethered

Energy constrained nature

Routing

AREA OF RESEARCH IN WSN

New routing protocol

Data management /agregation

Target tracking

Topology control

Power issues

Mac protocols

Coverage and connectivity

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.

Fuzzy logic

Simulators for wireless sensor networks Ns2

Glomosim

Matlab

Opnet

Q..??