Proximity sensor
What is the meaning proximity means?
Proximity is nearness in space means things are near to the
object known as proximity.
What is proximity sensor?
Sensor which sense the very near object is known as
proximity sensor.
What are types of proximity sensor?
Capacitive
Inductive
Optical
Capacitive Proximity sensor
It is working on the basic principle of the capacitance coupling.
The senor detect anything is conductive
or has a dielectric different from that of air the best example of the
capacitive proximity sensor is the “Touch Screen”
Inductive proximity sensor
It is working on the basic principle of the Inductive. The sensor consists of an induction loop. Electric current generates a magnetic field. The best example
for the inductive proximity sensor is the “Metal detector”
Optical
proximity sensor
It is working on the basic principle of
the Infrared and photoelectric. In one
end infrared and other end is the photoelectric sensor means Photo transistor. If
the light beams gets disturbed means it gives signal as 1 or else 0 (or) it depends
on the applications we use. Best example is the “smoke detector”
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