Mechanism of PIR sensor

PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range.

1. Mechanism of PIR Sensor

2. Name ID 1. Wahid Bin Walid Badhan 19-40845-2 2. MD. Rokon Islam Emon 19-43417-2 3. Sanzidul Islam 19-40849-2 4. MD. Bakhtiar Azim Niloy 19-41011-2 5. Shobhan Kumar Saha 19-40911-2

3. We are Contents : 1.Introduction 2.Mechanism 3.Application 4.Uses 5.Conclution

4. What is Sensor? a device, module, machine, or subsystem P urpose to detect events or changes in its environment send the information to other electronics Types of Sensor : 1. PIR Sensor(Passive Infra-red sensor). 2. IR   Sensor  (Infrared  Sensor) 3. Pressure   Sensor. 4. Light  Sensor. Infrared Sensor Pressure Sensor

5. Passiv e Infrared Sensor ( PIR) Sensor: measures   infrared  (IR) light radiating from objects in its field of view.

6. Work of the PIR Sensor: Working Voltage: 5v-12v DC Ranging Distance: 3m-7m (Adjustable)

7. Mechanism of PIR sensor Consists pyroelectric sensor

8. Mechanism of PIR sensor Detect movement Frenzei lens focuses the infared signals onto the pyelectric sensor.

9. Mechanism of PIR sensor let’s connect to the module to the Auduino mode . 3pins ground a VCC for powering a output pin two potentiometers This time can be adjusted from 0.3 seconds up to 5 minutes.

10. How PIR sensor works for Human Body Human body clothing received the pyroelectric sensor In this surveillance mode the pyroelectric sensor sees the moving human body IR constantly changes the temperature of the pyroelectric material IR outputs a corresponding signal, which is the alarm signal

11. PIR sensor based Security Alarm Based System Switch on the circuit initially The PIR sensor is powered and detects the IR rays emitted form any human. The sensor range of 5meters adjust the pot provided to vary this distance. when a presence is detected, the PIR sensor outoutas a logis valueof 3.5V-5V this voltage is applied as input to the siren generator IC

12. PIR sensor other uses: s mart home e levator a ll outdoor Lights c ommon staircases f or Basement or Covered Parking Area s hopping Malls f or garden lights m any more…..

13. Application of PIR sensor in Smart Home  

14. The Application Of PIR Sensor In Smart Home Smart Lighting : Thermostat :

15. The Application Of PIR Sensor In Smart Home Sensory Switch : Environmental Monitoring:

16. Conclusion : Importance Advanges

17. Precautions the use of voltage surge absorption elements is highly recommenend . Overvoltege

18. Adapting PIR Sensor technology to New Applications Motion sensing for Robot hands Car parking Market opportunities