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Distributed sensor network


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About sensor network

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Distributed sensor network

  2. 2. Sensor network: • It consists of multiple detection stations called sensor node • It is equipped with a transducer, microcomputer & transceiver and power source. • In sensor networks is basic on the defense application at the beginning, especially the Distributed Sensor Networks (DSN).
  3. 3. Types of sensor network: • There are many types of sensors. • They are used to measure and/or detect a huge variety of conditions Some are: • Common sensor • Bandwidth monitoring sensor • Web server (HTTP) sensor • SNMP sensor etc..
  4. 4. Distributed sensor network: The implementation of sensor network using distributed control architecture Reasons: • Sensor nodes are prone to failure • For better collection of data • To provide nodes with backup in case of failure of the central node
  5. 5. History: • In 1978,Defence Advanced Research Project Agency developed Distributed sensor network. Standards: There are a number of standardization bodies in the field of WSNs including WAVE2M and IEEE
  6. 6. Operating system: • Operating systems such as eCos or μC/OS used for sensor networks. • TinyOS is perhaps the first operating system for WSN • LiteOS and Contiki are the other new operating systems
  7. 7. Hardware: • WSN is to produce low cost and tiny sensor nodes. • Node contains: radio, battery, microcontroller, analog circuit, and sensor interface. Software: Algorithms and protocols need to address the following issues: • Lifetime maximization • Robustness and fault tolerance • Self-configuration
  8. 8. Working:
  9. 9. Layers used in data transmission:
  10. 10. Characteristics: • Power consumption using batteries or energy harvesting • Ability to cope with node failures • Mobility of nodes • Dynamic network topology • Scalability to large scale of deployment • Ability to withstand harsh environmental conditions • Ease of use
  11. 11. Routing technique:
  12. 12. Security Requirements: • Authentication • Secrecy • Countermeasures • Key Establishment Application: It consists of spatially distributed autonomous sensors to monitor physical or environmental conditions.
  13. 13. Military application: Services: • Battlefield surveillance • Targeting • Battle damage assessment • Nuclear, biological and chemical attack detection
  14. 14. Environmental Application: • habitat monitoring • agriculture research • fire detection • traffic control. • no interruption to the environment
  15. 15. Health Applications: • Widely used in health care area • Monitor patient physiological data. • To control the drug administration track.
  16. 16. Recent development of Home Applications: • Home application will step into our normal life in the future.
  17. 17. Conclusion: • The features of distributed sensor network is developing abruptly. • DSN has many advantages and is used in several fields. “It is going to make an evolution in the Technology world”.
  18. 18. By, I. Madhumithah V. Kalpana M.Sc(CS) G.VENKATASWAMY NAIDU COLLEGE