| A sensor is a device that responds to an
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| | sensor networks. A sensor network is a
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| input quantity by generating a
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| | group of specialized transducers with a
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| functionally related output usually in
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| | communications infrastructure intended to
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| the form of an electrical or optical
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| | monitor and record conditions at varying
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| sight. There are many different types of
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| | locations. Areas commonly monitored
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| sensors: position sensors, load sensors,
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| | include temperature, humidity, pressure,
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| tilt sensors, and vibration sensors to
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| | wind direction and speed, illumination
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| name a few, and they are present in
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| | intensity, vibration intensity, sound
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| multiple fields that warrant the
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| | intensity, power-line voltage, chemical
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| technology.
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| | concentrations, pollutant levels, and
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| In the past twenty years there has been
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| | vital body functions. This intelligent is
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| tremendous growth in the number of
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| | achieved by using solely or a combination
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| products and services that utilize
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| | of the tilt, load, vibration, and
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| information acquired by monitoring and
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| | position sensors mentioned in the
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| quantifying different types of sensors.
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| | introduction.
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| Sensors have been produced to match the
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| | A sensor network can be broken down
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| need of these afore mentioned services,
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| | further into multiple detection stations
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| and is referred to as sensor technology.
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| | called 'sensor nodes.' Each sensor node
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| Sensor technology encompasses a broad
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| | is minute, lightweight, and portable.
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| range of services including those
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| | Each node is equipped with a transducer,
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| applicable in the environment, medicine,
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| | microcomputer, transceiver, and power
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| commerce, and industry.
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| | source. The transducer generates
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| Organizations of the relevant areas are
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| | electrical signals based on sensed
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| realizing the implications of encouraging
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| | physical effects. The microcomputer both
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| the growth of sensor technology. Most
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| | processes and stores the sensor output.
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| sensors are electrical or electronic,
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| | The transceiver (being hard-wired or
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| though other types exist. Sensors are
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| | wireless) receives commands from a
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| used in everyday life with applications
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| | centralized computer and transmits data
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| in areas such as automobiles, machines,
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| | back to the computer. The power for each
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| medicine, and robotics.
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| | sensor node is derived from the electric
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| Sensor Networks
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| | utility or from a battery.
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| Sensors usually work in a network, called
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