Wireless Sensor Network
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The document discusses Wireless Sensor Networks (WSNs), describing their definition, applications, and architecture in contrast to Mobile Ad Hoc Networks (MANETs). WSNs enable continuous monitoring of environmental conditions across various fields such as military, healthcare, and industrial applications. The future of WSNs includes smart home technology, biomedical advances, and enhanced traffic management systems.
Wireless Sensor Network
- 1. Wireless Sensor Network Md. Javedul Ferdous
- 2. Agenda • Introduction • Differences with ad hoc networks • Applications • Architectures • Future 2
- 3. Wireless Sensor Network “A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations.” - Wikipedia
- 4. Wireless Sensor Network(WSN) vs. Mobile Ad Hoc Network (MANET) WSN MANET Security Symmetric Key Cryptography Public Key Cryptography Routing Support specialized traffic pattern. Cannot afford to have too many node states and packet overhead Support any node pairs Some source routing and distance vector protocol incur heavy control traffic Resource Tighter resources (power, processor speed, bandwidth) Not as tight.
- 5. Applications of WSNs • Constant monitoring & detection of specific events • Military, battlefield surveillance • Forest fire & flood detection • Habitat exploration of animals • Patient monitoring • Home appliances
- 6. Habitat Monitoring on Great Duck Island • http://www.greatduckisland.net/ • Intel Research Laboratory at Berkeley initiated a collaboration with the College of the Atlantic in Bar Harbor and the University of California at Berkeley to deploy wireless sensor networks on Great Duck Island, Maine (in 2002) • Monitor the microclimates in and around nesting burrows used by the Leach's Storm Petrel • Goal : habitat monitoring kit for researchers worldwide
- 7. FireBug • Wildfire Instrumentation System Using Networked Sensors • Allows predictive analysis of evolving fire behavior • Firebugs: GPS-enabled, wireless thermal sensor motes based on TinyOS that self-organize into networks for collecting real time data in wild fire environments • Software architecture: Several interacting layers (Sensors, Processing of sensor data, Command center) • A project by University of California, Berkeley CA.
- 8. Preventive Maintenance on an Oil Tanker in the North Sea: The BP Experiment • Collaboration of Intel & BP • Use of sensor networks to support preventive maintenance on board an oil tanker in the North Sea. • A sensor network deployment onboard the ship • System gathered data reliably and recovered from errors when they occurred. • The project was recognized by InfoWorld as one of the top 100 IT projects in 2004,
- 9. Architectures • Layered • Clustered
- 10. 10 Layered Architecture • A single powerful base station (BS) • Layers of sensor nodes around BS • Layer i: All nodes i-hop away from BS • Applications: • In-building: BS is an access point • Military • Short-distance, low power tx
- 11. 11 Clustered Architecture • Organizes the sensor nodes into clusters • Each cluster is governed by a cluster-head • Only heads send messages to a BS • Suitable for data fusion • Self-organizing
- 12. Future of WSN Smart Home / Smart Office • Sensors controlling appliances and electrical devices in the house. • Better lighting and heating in office buildings. • The Pentagon building has used sensors extensively.
- 13. Biomedical / Medical • Health Monitors • Glucose • Heart rate • Cancer detection • Chronic Diseases • Artificial retina • Cochlear implants • Hospital Sensors • Monitor vital signs • Record anomalies
- 14. Military Remote deployment of sensors for tactical monitoring of enemy troop movements.
- 15. Industrial & Commercial • Numerous industrial and commercial applications: • Agricultural Crop Conditions • Inventory Tracking • In-Process Parts Tracking • Automated Problem Reporting • RFID – Theft Deterrent and Customer Tracing • Plant Equipment Maintenance Monitoring
- 16. Traffic Management & Monitoring Future cars could use wireless sensors to: Handle Accidents Handle Thefts Sensors embedded in the roads to: –Monitor traffic flows –Provide real-time route updates
- 17. Thank You