wireless sensor network (wsn)
TRANSCRIPT
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..??