Sensor networks

these are a computer network of many, spatially distributed devices using sensors to monitor conditions at different locations, such as temperature sound vibration pressure, motion or pollutants. Usually these devices are small and inexpensive, so that they can be produced and deployed in large numbers, and so their resources in terms of energy, memory, computational speed and bandwidth are severely constrained. Each device is equipped with a radio transciever, a small microcontroller, and an energy source, usually a battery. The devices use each other to transport data to a monitoring computer.

Applications

Sensor networks are applied in a wide variety of areas, such as video survelence, traffic monitoring, air traffic control, robotics, cars, home monitoring and manufacturing and industrial automation. One typical application in environmental monitoring is Sensor Web.

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