A
sensor is a device that responds to any change in physical phenomena or environmental variables like heat, pressure, humidity, movement etc. This change affects the physical, chemical or electromagnetic properties of the
sensors which is further processed to a more usable and readable
form.
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- Pressure Sensors. ...
- Proximity Sensors. ...
- Level Sensors. ...
- Accelerometers. ...
- Gyroscope. ...
- Gas Sensors. ...
- Infrared Sensors. These types of sensors sense characteristics in their surroundings by either emitting or detecting infrared radiation. ...
- Optical Sensors. Optical sensors convert rays of light into electrical signals.
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Researcher estimates say there will be nearly 6.4 billion connected objects this year, up 30 percent from 2015 and growing to reach 20.8 billion by 2020. IoT is on track to connect 50 billion \u201csmart\u201d things by 2020 and 1 trillion sensors soon after, according to the National Science Foundation.
