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Article #125: Sensors And How They Are Used

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






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