A sensor network is a computer integration of wired and wireless sensor networks network of many, spacially distributed devices using sensors to monitor conditions at different locations, such as temperature, sound, vibration, pressure, motion or pollutants. Usually these devices sensor networks books 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 transceiver, a small microcontroller, and an energy source, usually a battery. The devices use each other to transport data to a monitoring computer.
Sensor networks involve three areas: sensing, communications, and computation (hardware, software, algorithms). Very useful technologies are wireless new pathways in the research of sensor networks collaborative localization sensor networks biomedical technology monte carlo sensor networks database technology such as queries, used in a wireless sensor network, and network technology to communicate with other sensors, especially multihop routing protocols. For example, Zigbee is a wireless protocol used by Motorola in home control systems.
Applications
Sensor location sensor networks books free managemant in wireless sensor networks networks are localization of mobile wireless sensor networks applied in a wide variety of areas, such as video surveillance, traffic sensor networks configuration deploy monitoring, air traffic wireless sensor networks news control, robotics, cars, home monitoring and manufacturing and industrial automation. One typical application in environmental monitoring is Sensor Web.
Operation
The networks self-organize. Data from the sensors is aggregated power consumption of protocols in sensor networks and analyzed by a computer location mamgement in wireless sensor networks outside the network. This computer is connected to the network by a special network node called a gateway node or sink or base station.
History
The early sensor network was applied for military purpose, like the Sound Surveillance System(SOSUS) during the Cold market cell phone access sensor networks War. Modern research on sensor networks started around 1980 at the Defense Advanced sensor networks Research location management in wireless sensor networks Projects Agency wireless sensor networks crossbow uses (DARPA): wireless sensor networks bibliography wireless sensor networks Distributed Sensor Networks sensor networks and nano (DSN) program. Smaller computing chips, more wireless embedded sensor networks capable sensors, wireless networks, and sensor networks configuration other new IT technologies are pushing the development of sensor networks.
See also
- Smartdust
- TinyOS
- Sensor Web
- Contiki
- Wireless sensor networks
- BTnodes
- Particle Computer
External references
- Akyildiz, I.F., W. Su, Y. Sankarasubramaniam, E. Cayirci, "A Survey on Sensor Networks", IEEE Communications Magazine, August, 102–114 (2002). PDF version
- Chee-Yee Chong; Kumar, S.P., "Sensor networks: Evolution, opportunities, and challenges," Proc. IEEE, August 2003. (PDF version)
- Lecture on sensor networks
- OGC Standards work for web accessible sensor networks
Electronics Topics
The field of electronics is the study and use of systems that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is part of the fields of electronic engineering, and the hardware design side of computer engineering. The study of new semiconductor devices and their technology is sometimes considered as a branch of physics.
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