The presentation taking about the sensors

1. HISTORY OF SENSORS
Eng. Abdalla Ali Abd El Manium
Mechatronics

2.  What are sensors?
 Who invented the first sensor?
 Types of the sensors
 Motion sensor
History of sensors

3.  A sensor is a device that detects changes in
quantities.
 The specific quantity could be light, heat, motion,
gases and pressure.
 It provides a corresponding output, generally as an
electrical something that can be controlled.
 for example; a thermocouple converts heat into an
output voltage.
What is the sensor

4. Old Thermocouple (type K): used to measure the
atmospheric temperature.

5.  Most of the sensors in use today are be able to
communicate with an electronic device.
 which is going to do the measuring, calculation and
recording.
 Sensors are used in our life rapidly
 Applications for sensors; speedometer, parking
sensor and fuel meter in cars.
What is the sensor

6. Fuel meter (Analog) sensor: used to measure the
level of fuel in the tank.

7. Speedometer (Analog) sensor: used to measure the
instantaneous speed of a land vehicle.

8. Parking (Motion) sensor: used to alert the driver of
unseen obstacles during parking.

9.  It depend on the type of sensors.
 For type electric thermostat.
 The inventor is Warren Johnson.
 This thermostat was able to keep
temperatures within a degree of accuracy.
 that’s better than some of the low quality
thermostats on the market today!
Who invented first sensor

10. *Warren Johnson

11.  The first thermostat came to market in 1883,
 the first modern of sensor was manmade.
 Infrared sensors have been around since the late
1940s.
Who invented first sensor

12. *The first manmade sensor motion sensor

13.  The first motion sensor used for an alarm system.
 Came about in the early part of the 1950s, and the
inventor was Samuel Bagno.
 His device made use of ultrasonic frequencies as
well as the Doppler Effect.
Who invented first sensor

14.  Sensors have been around for various forms.
 Such as LDR, Temperature Sensor, Ultrasonic
Sensor, Humidity Sensor, Vibration sensor, Gas
Sensor etc..
Types of sensors

15. Types of sensors
* Optical Smoke Detector
(gas sensor)
*Piezoelectric sensor
(vibration sensor)

16. Types of sensors
*Ultrasonic sensor
*Light sensor

17. Types of sensors
*(HS1101) HUMIDITY SENSOR
*Motion sensor

18.  Motion sensors improved in World War II.
 First use of motion sensor in the 1940s was by
Samuel Bagno.
 And used to determined location of a person within
a room.
 And then used to calculate the movement of the
stars.
Motion sensors

19.  The first use in World War II with mine.
 Mines placed below the ground would explode
when it sense movement on the surface.
 In modern technology it used at Radar to track enemy.
 And helps in air traffic control to avoid airplane accident.
Motion sensor

20.  Technological Concepts:
 Waves are sent out through the detector
 These waves are used to detect movement
 Once the waves hit an object, they are bounced back to
the detector.
 The waves bounced back are taken in and encoded
Motion sensor

21.  The encoded information is then transmitted to the
decoder.
 The information is then decoded.
 Decoded information is used to activate device.
History of sensor

22. Motion sensor
•Then make calculation to determine the distance.

23.  Advantage of motion sensor:
• Motion sensor has many advantage .
• Help to secure houses which detect any motion around
the house.
• Motion sensors can help to increase energy savings
such as by turning lights off in unoccupied rooms.
Motion sensor

24.  Disadvantage of motion sensor:
• Has made military more dangerous weapons.
• Used in mine explosive and rockets launcher.
Motion sensor

25. 1) http://what-is-a-sensor.com/
2) https://www.google.com.eg/imghp?hl=ar&tab=wi
Reference

26. Thank
You