Sensor networks are used to closely monitor physical phenomena. Such networks
are made up of nodes which have the ability to monitor one or more aspects of
the physical world (e.g. light, heat, vibration). These nodes are also
capable of communicating with one another and usually a central device which
makes use of the gathered information.
A number of applications for sensor networks are:
Due to the nature of applications for sensor networks, nodes are usually
required to be very small in size, have some processing capabilities and be
cheap since a large number of them are to be incorporated in a network. Also as
these networks are typically required to be highly versatile, the ability of
nodes to communicate wirelessly adds substantially to the practicality element
of such systems. All these features and requirements enforces certain
limitations on these networks.
- Habitat monitoring to help protection of rare
- Battlefield surveillance for detection of enemy
- Traffic surveillance and control
- Early detection of forest fires, volcano eruptions, flooding and
- Observing dispersion of hazardous chemicals in event of an emergency(e.g.
Oil tanker leakage, biochemical attack detection)
- Monitoring conditions of industrial instruments and sub-components (e.g.
Monitoring rail track vibration levels with real time feedback)