About sensor network

1. DISTRIBUTED
SENSOR
NETWORK

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. 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. 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. 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. 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. 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. Working:

9. Layers used in data transmission:

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. Routing technique:

12. Security Requirements:
• Authentication
• Secrecy
• Countermeasures
• Key Establishment
Application:
It consists of spatially distributed autonomous
sensors to monitor physical or environmental
conditions.

14. Military application:
Services:
• Battlefield surveillance
• Targeting
• Battle damage assessment
• Nuclear, biological and
chemical attack detection

15. Environmental Application:
• habitat monitoring
• agriculture research
• fire detection
• traffic control.
• no interruption to the
environment

16. Health Applications:
• Widely used in health care area
• Monitor patient physiological
data.
• To control the drug
administration track.

17. Recent development of Home
Applications:
• Home application will step into our normal life
in the future.

18. 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”.

19. By,
I. Madhumithah
V. Kalpana
M.Sc(CS)
G.VENKATASWAMY
NAIDU COLLEGE