Arduino and artificial intelligence3

• We have spoken in our first article on the painting Arduino and its types.
  https://steemit.com/arduino/@nekkaaanouar/arduino-and-artificial-intelligence
  -In the second article we have spoken about a sensors and particularly sensor "HC-SR04"/ "Ultrasonic".
  https://steemit.com/arduino/@nekkaaanouar/arduino-and-artificial-intelligence2

• In this article we will talk about other sensor that can be linked to the Arduino panel.
  / The sensor of today is named "(Passive Infra-Red) PIR Sensor";
  

-1- Definition of PIR Sensor:
A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.
2-Sensitivity characteristics:
-Sensitivity range of 3 to 7 meters
-Delay time: 5 seconds
-Plastic dome for increased wave propagation
-Feel the motion at an angle of 110 degrees
3- How to use with the Arduino?
-The picture below simply shows how to connect the sensor with the panel.

4-How it works?
An individual PIR sensor detects changes in the amount of infrared radiation impinging upon it, which varies depending on the temperature and surface characteristics of the objects in front of the sensor.[2] When an object, such as a human, passes in front of the background, such as a wall, the temperature at that point in the sensor's field of view will rise from room temperature to body temperature, and then back again. The sensor converts the resulting change in the incoming infrared radiation into a change in the output voltage, and this triggers the detection. Objects of similar temperature but different surface characteristics may also have a different infrared emission pattern, and thus moving them with respect to the background may trigger the detector as well.

4- Uses of Sensor?

The Sensor has many uses and many are mentioned in the field of artificial intelligence:

• Robotics
  -Radar.
  -System Alarm
  -Smart House
  -Smart Car

/I think I will stop at this point so that the subject will not become boring and we will continue in the next article with other sensor - thank you