wireless sensor network
- 1. SEMINAR PRESENTATION ON WIRELESS SENSOR NETWORKS GUIDED BY: SUBMITTED BY: ANSHU TOSHNIWAL JAIDEEP JANGIR http://powerpointpresentationon.blogspot.com
- 4. • It avoid lot of wiring. • It can accommodate new devices at any time. • Its flexible to go through physical partitions. • It can be accessed through a centralised monitor.
- 5. • It is very easy for hackers to hack it as we cant control propagation of waves. • Comparitively low speed of communications. • Gets distracted by various elements like Blue- tooth. • Still costly at large.
- 6. Wireless Sensor Network Architecture
- 9. Health applications Tele-monitoring of human physiological data Tracking and monitoring patients and doctors inside a hospital Drug administration in hospitals 9
- 10. Military applications Monitoring friendly forces, equipment and ammunition Reconnaissance of opposing forces and terrain Battlefield surveillance Battle damage assessment Nuclear, biological and chemical attack detection 10
- 11. Environmental applications Forest fire detection Biocomplexity mapping of the environment Flood detection Precision agriculture 11
- 15. Direct Communication Hierarchical Routing Multihop Routing Cluster Head
- 18. • Headers. • Each message generally has a header identifying its source node, destination node, length of the data field, and other information. • This is used by the nodes in proper routing of the message. In encoded messages, parity bits may be included. • In packet routing networks, each message is broken into packets of fixed length. • The packets are transmitted separately through the network and then reassembled at the destination.
- 20. • Mechanical Sensors o The Piezoresistive Effect o The Piezoelectric Effect o Capacitive Sensors o Inductive sensors • Optical Transducers o Photoelectric effect o Photoconductive sensors o Junction-based photosensors
- 21. • Magnetic and Electromagnetic Sensors o Magnetoresistive effect o Magnetic Field Sensors • Thermal Sensors o Thermo-Mechanical Transduction o Thermoresistive Effects o Thermocouples
- 22. • The emergence of wireless sensor networks can finally bridge the gap between physical and digital worlds, with the effect as if to establish nervous system for the physical world. • It also allows measurement and monitoring in the way that is much closer to the phenomenon than ever before, resulting in continuous and high fidelity of data collected.