Wireless sensor network (WSN)
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This document discusses wireless sensor networks (WSN). It defines WSN as consisting of hundreds to millions of small, inexpensive, low-power sensor nodes that can sense environmental conditions and communicate wirelessly. These sensor nodes monitor their surroundings, collect data, and transmit that data to a base station. The document outlines the types of nodes in a WSN, including sensing and sink nodes. It also describes common WSN applications in areas like smart home monitoring, the military, and environmental monitoring. Finally, it discusses challenges in WSN like energy constraints and routing, and areas of ongoing research like improving power efficiency through clustering and cluster head selection.
Wireless sensor network (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..??