Sensor nodes are the basic units of a sensor network and contain sensors, a processor, memory, a transceiver, and a power supply. A sensor network consists of many sensor nodes that are deployed to sense a phenomenon and transmit sensor data. Sensor networks have a variety of applications including environmental monitoring, smart homes/cities, healthcare, transportation, and military surveillance. They operate using different communication protocols and distributed algorithms to disseminate sensor data to end users.

1. SENSORSENSOR
NETWORKING ANDNETWORKING AND
ITS APLLICATIONSITS APLLICATIONS
Presented by;
M.VISHAL,CSE DEPT,
M.ABDUL RAHMAN,IT DEPT,
GUIDED BY,

2. OUTLINE
• Introduction
• Sensor node components
• Sensor network protocols stack
• Wireless sensor network applications
• Sensor networks operating systems
• Conclusion

3. INTRODUCTION
sensor
 A transducer
 converts physical phenomenon e.g. heat, light, motion, vibration, and
sound into electrical signals
sensor node
 basic unit in sensor network
 contains on-board sensors, processor, memory, transceiver, and
power supply
sensor network
 consists of a large number of sensor nodes
 nodes deployed either inside or very close to the sensed phenomenon

4. SENSOR NODES
A)Worldsens Inc. Sensor Node B)Crossbow Sensor Node

5. SENSOR NODE COMPONENTS
 Sensing unit
 Processing Unit
 Transceiver Unit
 Power Unit
 Location FindingSystem
 Power Generator
 Mobilizer

6. COMMUNICATION ARCHITECTURE
OF SENSOR NETWORKING

7. • Application layer protocols:
1)SMP 2)TADAP 3)SQDDP
• Transport layers: system is planned access
through internet
• Network layers:power efficiency is always
important

9. • Safe operation of trains.
• Communication from by means of signals
through(WSN)
• Introduction of WSN in Railways- achieve
economy-safety and efciency.

10. SENSOR NETWORKING IN
MILITARY
• Battlefield surveillance
• Nuclear,chemical,biological
detection
• Battle damage assessment

11. AUTOMOTIVE APPLICATIONS
• Detecting and monitoring car thefts
• Managing inventory control
• Vehicle tracking and detection

12. SENSOR NETWORKING IN MEDICAL
• Telemonitoring of human physiological
data
• Tracking and monitoring patients
doctors inside a hospital
• Drug administration in hospitals

13. OTHER APPLICATIONS
• Forest fire
• Moisture content
• Automatic
Hand washer(1)
(2)sensor

14.  sensors used for speed (1)
 Sensors used for temperature(2)
 Sensors for automatic detecting of
humans(3)&(4)

15. WSN OS
• TinyOS
• Contiki
• MANTIS
• BTnut
• SOS
• Nano-RK

16. CONCLUSION
• WSNs possible today due to technological
advancement in various domains
• Envisioned to become an essential part of our
lives
• Design Constraints need to be satisfied for
realization of sensor networks
• Tremendous research efforts being made in
different layers of WSNs protocol stack