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SENSOR TYPES AND ITS WORKING

 IOT - SENSOR AND ITS WORKING

The word "Automation" has begun already. It evolved in our daily life too. Most of things that we use now can be automated.

 For designing and knowing the work, we need to know the sensor types and it working. Even daily usage of mobile contains sensors like hall sensor, proximity sensor, accelerometer sensor, touch screen, microphone etc.,

There are plenty of sensors available and each have different characteristics,

Sensor definition:

The sensor can be defined as a device which can be used to sense/detect the physical quantity like force, pressure, strain, light etc and then convert in to desired output like the electrical signal to measure the applied physical quantity.

                                   (input)----> sensor---->Signal detecting---->(output)

Various sensors have different operating ranges which should be considered while working with it else the sensor may get damaged permanently.

TYPES OF SENSORS:

IR LED sensor:

  • It is also called as IR Transmitter.
  • It is used to emit Infrared rays.
  • It sense/detect objects through its rays.
TEMPERATURE sensor:
  • A thermistor can be used to detect the variation in temperature.
  • It has a negative temperature coefficient that means when the temperature increases the resistant decreases.
FORCE Sensor:
  •  A force sensor is used to detect pressure when a load is applied.
  • It is used to calculate the amount of pressure that an airplane wing can with stand and it is also used to measure the number of vehicles allowable on a particular road etc.
HALL Sensor:
  • It works on the Hall effect.
  • It is used to detect the magnetic field and gives output in terms of voltage.
  • Few smartphone contain this sensor and is used for turning off the screen.
  • Door alarm is one of the application used by hall sensor.
ULTRASONIC Sensor:
  • Most widely used sensor nothing but the range of the frequencies.
  • It is used to calculate the distance between the ultrasonic transmitter and the target and also used to measure the velocity of the target.
  • Avoiding obstacles for the automated cars, moving robots are some of the applications.
  • A mosquito can sense the ultrasonic sounds, so ultrasonic waves can be used as mosquito waves can be used as mosquito repellent.
Other types of sensors are:
Flame Sensor, Gas Sensor, Tilt Sensor, PIR Sensor, Touch Sensor, Sound Sensor... Etc.,



Tips to be productive:
  • Get enough sleep.
  • Rise early
  • Meditate daily
  • Focus on most important tasks first.
  • Cultivate deep work.

RD👍


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