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Wireless Sensor Network
The document presents a technical seminar on Wireless Sensor Networks (WSNs) by Manish Kumar Sharma, outlining their introduction, types, characteristics, components, architecture, challenges, advantages, and disadvantages. WSNs consist of distributed, battery-powered devices that monitor various environmental conditions, with applications in military and environmental monitoring. While they offer flexibility and the potential for wide-ranging applications, challenges such as energy efficiency, security vulnerabilities, and communication speed must be addressed for practical usage.
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Wireless Sensor Network
- 1. TECHNICAL SEMINAR ON WIRELESS SENSORNETWORK Presented By MANISH KUMAR SHARMA (COMPUTER SCIENCE AND ENGINEERING )
- 2. CONTENTS • INTRODUCTION • WHATIS WSN • TYPES OF WSN • CHARACTERISTICS OF WSN • COMPONENTS OF WSN • ARCHITECTURE OF A WSN • ARCHITECTURAL ISSUES • STANDARDS AND SPECIFICATIONS • APPLICATION • CHALLENGES • ADVANTAGES • DISADVANTAGES • CONCLUSION • REFERENCES
- 3. INTRODUCTION ➢A sensor networkis a group of tiny, generally battery – powered devices and wireless infrastructure that monitor and record conditions in any number of environments. ➢A wireless sensor network(WSN) is a wireless network that is designed using spatially distributed self –governing devices that uses sensors for monitoring physical or environmental conditions. ➢Parameters monitored using WSN are temperature, pressure, humidity, direction of wind and speed, intensity of sound, intensity of vibration, power- line voltage, pollutant levels.
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- 5. TYPES OF WSN UNSTRUCTUREDWSN ➢Dense collection of nodes ➢Ad-hoc deployment ➢Difficulty in network maintenance STRUCTURED WSN ➢Few and scarcely distributed nodes ➢Pre-planned Deployment ➢Lower network maintenance
- 6. CHARACTERISTICS OF AWSN • Self organization • Concurrency processing • Low cost • Restricted energy resources • Tiny • Small radio range
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- 10. ARCHITECTURAL ISSUES ➢Energy efficiency ➢Networktopology ➢Failure in long range communication ➢Increase in traffic decreases the lifetime ➢Single tier and multi tier architecture disadvantages
- 11. STANDARDS AND SPECIFICATIONS ➢Predominantstandards commonly used in WSN communications include: 1. Zig Bee – Transmit data over long distances by passing data through intermediate devices to reach more distant ones 2. Bluetooth – Wireless technology standard for exchanging data over short distances from fixed and mobile devices by creating PAN’s 3. 6LoWPAN – Defined encapsulation and header compression mechanisms that allow IPv6 packets to be sent to and received from over IEEE 802.15.4
- 12. APPLICATIONS OF WSN ➢Militaryapplications • Battlefield surveillance monitoring • Guiding intelligent missiles • Attack detection ➢Environment monitoring • Forest fire detection • Flood detection • Air pollution • Water quality
- 13. CHALLENGES • HARDWARE 1. Lowcost 2. Tiny sensors 3. Lifetime maximization 4. Robustness and fault tolerance 5. Self configuration • SOFTWARE 1. Operating system 2. Security 3. Mobility
- 14. ADVANTAGES OF WSN •Avoids a lot of wiring • Can accommodate new devices at any time • Flexible to go through physical partitions • It can be accessed through a centralized monitor • Infrastructure
- 15. DISADVANTAGES OF WSN •Easy for hackers to hack a network • Comparatively low speed of communication • Gets distracted by various elements • Costly at large • Life of nodes • Energy life
- 16. CONCLUSION Wireless sensor networksthe possess the potential for many applications. The advance of technology enabled the creation of prototype WSNs, but the hardware and software both have a ways to go before WSNs are practical, cost- effective, and usefully.
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